10-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(Mark one)

☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2020

OR

☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from            to            

Commission File Number: 001-12209

RANGE RESOURCES CORPORATION

(Exact Name of Registrant as Specified in Its Charter)

Delaware	34-1312571
(State or Other Jurisdiction of Incorporation or Organization)	(IRS Employer Identification No.)
100 Throckmorton Street, Suite 1200, Fort Worth, Texas	76102
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s telephone number, including area code

(817) 870-2601

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class	Trading Symbol	Name of each exchange on which registered
Common Stock, $.01 par value	RRC	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes  ☒     No  ☐

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    Yes  ☐    No  ☒

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes  ☒    No  ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).    Yes  ☒    No  ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	☒	Smaller reporting company	☐
Accelerated filer	☐	Emerging growth company	☐
Non-accelerated filer	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act:  ☐

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b))by the registered public accounting firm that prepared or issued its audit report.    ☒

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).    Yes  ☐    No  ☒

The aggregate market value of the voting and non-voting common equity held by non-affiliates as of June 30, 2020 was $1,404,596,000. This amount is based on the closing price of registrant’s common stock on the New York Stock Exchange on that date. Shares of common stock held by executive officers and directors of the registrant are not included in the computation. However, the registrant has made no determination that such individuals are “affiliates” within the meaning of Rule 405 of the Securities Act of 1933.

As of February 19, 2021, there were 258,570,848 shares of Range Resources Corporation Common Stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive proxy statement to be furnished to stockholders in connection with its 2021 Annual Meeting of Stockholders, which will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates, are incorporated by reference in Part II, Item 5 and Part III, Items 10-14 of this report.

RANGE RESOURCES CORPORATION

Unless the context otherwise indicates, all references in this report to “Range,” “we,” “us” or “our” are to Range Resources Corporation and its directly and indirectly owned subsidiaries. Unless otherwise noted, all information in the report relating to natural gas, natural gas liquids and crude oil reserves and the estimated future net cash flows attributable to those reserves are based on estimates and are net to our interest. If you are not familiar with the oil and gas terms used in this report, please refer to the explanation of such terms under the caption “Glossary of Certain Defined Terms” at the end of Items 1 & 2. Business and Properties of this report.

TABLE OF CONTENTS

PART I
		Page
ITEMS 1 & 2.	Business and Properties	2
	General	2
	2020 Executive Summary	2
	Available Information	3
	Our Business Strategy	3
	Significant Accomplishments in 2020	4
	Segment and Geographical Information	5
	Outlook for 2021	5
	Proved Reserves	6
	Property Overview	8
	Divestitures	10
	Producing Wells	10
	Drilling Activity	11
	Gross and Net Acreage	11
	Undeveloped Acreage Expirations	12
	Title to Properties	12
	Delivery Commitments	12
	Human Capital Management	12
	Competition	13
	Marketing and Customers	14
	Seasonal Nature of Business	14
	Markets	14
	Governmental Regulation	14
	Environmental and Occupational Health and Safety Matters	17
	Glossary of Certain Defined Terms	21
ITEM 1A.	Risk Factors	22
ITEM 1B.	Unresolved Staff Comments	34
ITEM 3.	Legal Proceedings	34
ITEM 4.	Mine Safety Disclosures	35
PART II
ITEM 5.	Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities	36
	Market for Common Stock	36
	Holders of Record	36
	Dividends	36
	Stockholder Return Performance Presentation	37

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TABLE OF CONTENTS (continued)

		Page
ITEM 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	38
	Overview of Our Business	38
	Management’s Discussion and Analysis of Results of Operations	40
	Management’s Discussion and Analysis of Financial Condition, Cash Flows, Capital Resources and Liquidity	50
	Management’s Discussion of Critical Accounting Estimates	55
ITEM 7A.	Quantitative and Qualitative Disclosures about Market Risk	60
	Market Risk	60
	Commodity Price Risk	61
	Other Commodity Risk	61
	Commodity Sensitivity Analysis	62
	Interest Rate Risk	62
ITEM 8.	Financial Statements and Supplementary Data	F-1
ITEM 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	63
ITEM 9A.	Controls and Procedures	63
ITEM 9B.	Other Information	63
PART III
ITEM 10.	Directors, Executive Officers and Corporate Governance	64
ITEM 11.	Executive Compensation	64
ITEM 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	64
ITEM 13.	Certain Relationships and Related Transactions, and Director Independence	64
ITEM 14.	Principal Accountant Fees and Services	64
PART IV
ITEM 15.	Exhibits and Financial Statement Schedules	65
SIGNATURES		69

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Disclosures Regarding Forward-Looking Statements

This Annual Report on Form 10-K contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (“Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (“Exchange Act”). These are statements, other than statements of historical fact, that give current expectations or forecasts of future events, including without limitation: drilling plans; planned wells; rig count; our 2021 capital budget and the planned allocation thereof; reserve estimates; expectations regarding future economic and market conditions and their effects on us (including the economic impact of global pandemics); our financial and operational outlook and ability to fulfill that outlook; our financial position, balance sheet, liquidity and capital resources and the benefits thereof. These statements typically contain words such as “may,” “anticipates,” “believes,” “estimates,” “expects,” “plans,” “predicts,” “targets,” “projects,” “should,” “would” or similar words, indicating that future outcomes are uncertain. In accordance with “safe harbor” provisions of the Private Securities Litigation Reform Act of 1995, these statements are accompanied by cautionary language identifying important factors, though not necessarily all such factors that could cause future outcomes to differ materially from those set forth in the forward-looking statements.

While we believe that these forward-looking statements are reasonable as and when made, there can be no assurance that future developments affecting us will be those that we anticipate. For a description of known material factors that could cause our actual results to differ from those in the forward-looking statements, see other factors discussed in Item 1A. Risk Factors.

Actual results may vary significantly from those anticipated due to many factors, including:

• conditions in the oil and gas industry, including supply and demand levels for natural gas, crude oil and natural gas liquids (“NGLs”) and the resulting impact on price;

• the availability and volatility of securities, capital or credit markets and the cost of capital to fund our operation and business strategy;

• accuracy and fluctuations in our reserves estimates due to regulations, reservoir performance or sustained low commodity prices;

• lack of, or disruption in, access to pipelines or other transportation methods;

• ability to develop existing reserves or acquire new reserves;

• drilling and operating risks;

• well production timing;

• changes in political or economic conditions in our key operating market;

• prices and availability of goods and services, including third-party infrastructure;

• unforeseen hazards such as weather conditions, acts of war or terrorist acts;

• electronic, cyber or physical security breaches;

• changes in safety, health, environmental, tax and other regulations or requirements or initiatives including those addressing the impact of global climate change, air emissions or water management;

• other geological, operating and economic considerations;

• the ability and willingness of current or potential lenders, derivative contract counterparties, customers and working interest owners to fulfill their obligations to us or to enter into transactions with us in the future on terms that are acceptable to us; or

• other factors discussed in Items 1 and 2. Business and Properties, Item 1A. Risk Factors, Item 7. Management Discussion and Analysis of Financial Condition and Results of Operations, Item 7A. Quantitative and Qualitative Disclosures about Market Risk and elsewhere in this report.

Readers are cautioned not to place undue reliance on forward-looking statements, which speak only as of the date hereof. We undertake no obligation to publicly update or revise any forward-looking statements after the date they are made, whether as a result of new information, future events or otherwise except as required by law. All subsequent written and oral forward-looking statements attributable to us or persons acting on our behalf are expressly qualified in their entirety by the cautionary statements contained throughout this report.

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PART I

 ITEMS 1 AND 2. BUSINESS AND PROPERTIES

General

Range Resources Corporation, a Delaware corporation, is a Fort Worth, Texas-based independent natural gas, NGLs and oil company, engaged in the exploration, development and acquisition of natural gas and oil properties in the United States. Our principal area of operation is the Marcellus Shale in Pennsylvania. Our corporate offices are located at 100 Throckmorton Street, Suite 1200, Fort Worth, Texas 76102 (telephone (817) 870-2601). We also maintain field offices in our areas of operation. Our common stock is listed and trades on the New York Stock Exchange (the “NYSE”) under the ticker symbol “RRC.” Range Resources Corporation was incorporated in 1980. At December 31, 2020, we had 256.4 million shares outstanding.

At year-end 2020, our proved reserves had the following characteristics:

• 17.2 Tcfe of proved reserves;

• 65% natural gas, 33% NGLs and 2% crude oil and condensate;

• 57% proved developed;

• almost 100% operated;

• a reserve life index of approximately 22 years (based on fourth quarter 2020 production);

• a pretax present value of $3.0 billion of future net cash flows, discounted at 10% per annum (“PV-10”^(a)); and

• a standardized after-tax measure of discounted future net cash flows of $2.8 billion.

^(a) PV-10 is considered a non-GAAP financial measure as defined by the U.S. Securities and Exchange Commission (the “SEC”). We believe that the presentation of PV-10 is relevant and useful to our investors as supplemental disclosure to the standardized measure, or after-tax amount, because it presents the discounted future net cash flows attributable to our proved reserves before taking into account future corporate income taxes and our current tax structure. While the standardized measure is dependent on the unique tax situation of each company, PV-10 is based on prices and discount factors that are consistent for all companies. Because of this, PV-10 can be used within the industry and by creditors and security analysts to evaluate estimated net cash flows from proved reserves on a more comparable basis. The difference between the standardized measure and the PV-10 amount is the discounted estimated future income tax of $134.4 million at December 31, 2020. PV-10 for December 31, 2020 was determined using NYMEX benchmark prices of $1.98 per mcf for natural gas and $39.77 per bbl for oil.

Our estimated proved reserves decreased 5% to 17.2 Tcfe at December 31, 2020 from 18.2 Tcfe at December 3, 2019. Reserve additions from extensions and discoveries were the result of a successful development program and completion optimizations that resulted in improved well performance. The 2020 reserve additions were offset by 2020 production volumes of 816.5 Bcfe, the sale of our North Louisiana properties of 828.1 Bcfe, lower commodity prices and 961.1 Bcfe of reserves reclassified to unproved because of previously planned wells not expected to be drilled within the original five-year development horizon. We believe these unproved reserves can be included in our future proved reserves as these locations are added back into our five-year development plan.

Highlights of our 2020 production were:

• total production of 574.5 Bcf of natural gas, 37.5 Mmbbls of NGLs and 2.8 Mmbbls of crude oil and condensate;

• average daily production of 2.23 Bcfe per day, a decrease of 2% from 2019 reflecting the impact of the divestiture of our North Louisiana properties;

• excluding our North Louisiana properties from production in both 2020 and 2019, total production increased 3%;

2020 Executive Summary

Since our production is approximately 70% natural gas, natural gas prices generally constitute the primary variable in our operating results. Over the last few years, New York Mercantile Exchange (“NYMEX”) natural gas prices have been volatile. Since the beginning of 2018, natural gas prices have been as low as $1.50 per mcf and as high as $4.72 per mcf. The prices we receive for all our products are largely based on current market prices which are beyond our control but are managed through diversity in our sales agreements combined with an active commodity price hedging program. Over the past few years we have focused on areas that are within our control. Currently, our focus is on enhancing cash flow through cost reductions and operational efficiencies, while strengthening our balance sheet, rather than expansion and growth. During 2020, we:

• sought to align our annual capital spending with internally generated cash flow;

• received asset sale proceeds of $246.1 million;

• issued $850.0 million aggregate principal amount of new 9.25% senior notes due 2026;

• repurchased $1.2 billion of various senior and senior subordinated notes due 2021, 2022 and 2023 using the proceeds from the sale of our new 9.25% senior notes and the proceeds from the sale of our North Louisiana assets;

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• maintained our bank committed borrowing capacity at $2.4 billion;

• spent approximately $109.3 million less than our initial 2020 capital budget of $520.0 million;

• repurchased 8.2 million shares of common stock;

• reduced direct operating expense by $44.1 million, a reduction of 32% from 2020 reflecting the divestiture of higher operating cost properties;

• reduced 2020 general and administrative expenses by $21.7 million, a reduction of 12% from 2019 reflecting reductions in personnel and our efforts to reduce costs to enhance profitability and resilience;

• reduced our depletion, depreciation and amortization rate per mcfe 27% from 2019;

• estimates of our proved reserves at December 31, 2020 decreased to 17.2 Tcfe from 18.2 Tcfe at December 31, 2019 which reflects the sale of our North Louisiana assets. Excluding the North Louisiana reserves from year-end 2019, proved reserves declined less than 1% due to reserves reclassed to unproved because of previously planned wells not expected to be drilled within the original five-year development horizon;

• continued to reduce our drilling and completion costs which are now less than $600 per foot;

• published our second formal corporate sustainability report which discusses our continued focus and commitment to the environment and the communities where we work and announced a goal of net zero direct emissions by 2025;

• continued with our innovative water recycling program;

• continued utilizing an electric frac fleet;

• reduced emissions in 2020 compared to 2019 and increased the frequency of leak detection inspections;

• achieved a 68% reduction in contractor OSHA recordable injuries compared to 2019; and

• achieved a 64% reduction in number of preventable vehicle incidents compared to 2019.

Available Information

Our corporate website is available at http://www.rangeresources.com. Information contained on or connected to our website is not incorporated by reference into this Form 10-K and should not be considered part of this report or any other filing we make with the SEC. We make available, free of charge, on our website, the annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and amendments to those reports, as soon as reasonably practicable after filing such reports with the SEC. Other information such as presentations, our corporate responsibility culture, our Corporate Governance Guidelines, the charters of the Audit Committee, the Compensation Committee, the Dividend Committee, the Governance and Nominating Committee, and the Code of Business Conduct and Ethics are available on our website and in print to any stockholder who provides a written request to the Corporate Secretary at 100 Throckmorton Street, Suite 1200, Fort Worth, Texas 76102. Our Code of Business Conduct and Ethics applies to all directors, officers and employees, including our President and Chief Executive Officer and Chief Financial Officer.

The SEC maintains an internet website that contains reports, proxy and information statements and other information regarding issuers, including Range, that file electronically with the SEC. The public can obtain any document we file with the SEC at http://www.sec.gov.

Our Business Strategy

Our overarching business objective is to build stockholder value through returns focused development of natural gas properties. Our strategy to achieve our business objective is to generate consistent cash flow from reserves and production through internally generated drilling projects coupled with occasional acquisitions and divestitures of non-core, or at times, core assets. In addition, we target funding our capital spending to at or below operating cash flow. Our strategy requires us to make significant investments and financial commitments in technical staff, acreage, seismic data, drilling and completion technology and gathering and transportation arrangements to build drilling inventory and market our products. Our strategy has the following key elements:

• commit to environmental protection and worker and community safety;

• concentrate in our core operating area;

• focus on cost efficiency;

• maintain a high-quality multi-year drilling inventory;

• maintain a long-life reserve base with a low base decline rate;

• market our products to a large number of customers in diverse markets under a variety of commercial terms;

• maintain operational and financial flexibility; and

• provide employee equity ownership and incentive compensation aligned with our stakeholders’ interests.

These elements are anchored by our interests in the Marcellus Shale located in Pennsylvania which has a remaining productive life in excess of 50 years.

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Commit to Environmental Protection and Worker and Community Safety. We strive to implement technologies and commercial practices to minimize potential adverse impacts from the development of our properties on the environment, worker health and safety and the safety of the communities where we operate. We analyze and review performance while striving for continual improvement by working with peer companies, regulators, non-governmental organizations, industries not related to the oil and natural gas industry and other engaged stakeholders. We expect every employee to maintain safe operations, minimize environmental impact and conduct their daily business with the highest ethical standards.

Concentrate in Our Core Operating Area. We currently operate in one region: Pennsylvania. Concentrating our drilling and producing activities allows us to develop the regional expertise needed to interpret specific geological and operating conditions and develop economies of scale. Operating in our core area also allows us to pursue our goal of consistent production at attractive returns. We intend to further develop our acreage and improve our operating and financial results through the use of technology and detailed analysis of our properties. We periodically evaluate and pursue acquisition opportunities (including opportunities to acquire particular natural gas and oil properties or entities owning natural gas and oil assets) and at any given time we may be in various stages of evaluating such opportunities.

Focus on Cost Efficiency. We concentrate in areas which we believe to have sizeable hydrocarbon deposits in place that will allow economic production while controlling costs. Because there is little long-term competitive sales price advantage available to a commodity producer, the costs to find, develop, and produce a commodity are important to organizational sustainability and long-term stockholder value creation. We endeavor to control costs such that our cost to find, develop and produce natural gas, NGLs and oil is one of the lowest in the industry. We operate almost all of our total net production and believe that our extensive knowledge of the geologic and operating conditions in the areas where we operate provides us with the ability to achieve operational efficiencies.

Maintain a High-Quality Multi-Year Drilling Inventory. We focus on areas with multiple prospective and productive horizons and development opportunities. We use our technical expertise to build and maintain a multi-year drilling inventory. We believe that a large, high-quality multi-year inventory of drilling projects increases our ability to efficiently plan for economic production. Currently, we have over 3,500 proven and unproven drilling locations in inventory.

Maintain a Long-Life Reserve Base with a Low Base Decline Rate. Long-life natural gas and oil reserves provide a more stable platform than short-life reserves. Long-life reserves reduce reinvestment risk as they lessen the amount of reinvestment capital deployed each year to replace production. Long-life natural gas and oil reserves also assist us in minimizing costs as stable production makes it easier to build and maintain operating economies of scale. Long-life reserves also offer upside from technology enhancements.

Market Our Products to a Large Number of Customers in Diverse Markets Under a Variety of Commercial Terms. We market our natural gas, NGLs, crude oil and condensate to a large number of customers in both domestic and international markets to maximize cash flow and diversify risk. We hold numerous firm transportation contracts on multiple pipelines to enable us to transport and sell natural gas and NGLs in the Midwest, Gulf Coast, Southeast, Northeast and international markets. We sell our products under a variety of price indexes and price formulas that assist us in optimizing regional price differentials and commodity price volatility.

Maintain Operational and Financial Flexibility. Because of the risks involved in drilling, coupled with changing commodity prices, we are flexible and adjust our capital budget throughout the year. If certain areas generate higher than anticipated returns, we may accelerate development in those areas and decrease expenditures elsewhere. We also believe in maintaining ample liquidity, using commodity derivatives to help stabilize our realized prices and focusing on financial discipline. We believe this provides more predictable cash flows and financial results. We regularly review our asset base to identify nonstrategic assets, the disposition of which is expected to increase capital resources available for other activities and create organizational and operational efficiencies.

Provide Employee Equity Ownership and Incentive Compensation Aligned with Our Stakeholders’ Interest. We want our employees to think and act like business owners. To achieve this, we reward and encourage them through equity ownership in Range. All full-time employees are eligible to receive equity grants. As of December 31, 2020, our employees and directors owned equity securities in our benefit plans (vested and unvested) that had an aggregate market value of approximately $104.5 million. We seek to align our incentive compensation with stakeholders’ interest and key business objectives and our Board routinely engages with stockholders to inform the annual incentive compensation framework.

Significant Accomplishments in 2020

• Proved reserves – Total proved reserves decreased 5% in 2020 compared to 2019, from 18.2 Tcfe to 17.2 Tcfe, reflecting the impact of the sale of our North Louisiana assets. Excluding this sale, proved reserves decreased less than 1% when compared to 2019 primarily due to reserves reclassed to unproved. This achievement is the result of existing quality production and efficient development. We believe the quality of our technical teams and our substantial inventory of high quality Marcellus Shale drilling locations provide the basis for future proved reserves and production.

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• Production – In 2020, our production averaged 2.23 Bcfe per day, a decrease of 2% from 2019 reflecting the impact of the sale of our North Louisiana properties. Excluding production from these North Louisiana properties, our production increased 3% from 2019. Our capital program is designed to allocate investments based on projects that maximize returns while minimizing controllable costs associated with production activities. We intend to continue our disciplined investment in our Marcellus Shale asset.

• Focus on financial flexibility – As of December 31, 2020, we maintained a $4.0 billion bank credit facility, with a borrowing base of $3.0 billion and committed borrowing capacity of $2.4 billion. We endeavor to maintain a strong liquidity position. In 2020, we reduced our aggregate principal amount of debt by $86.0 million. During the year, we significantly improved our near-term maturities through re-financings and open market bond repurchases. Also, in early January 2021, we issued $600.0 million of new senior notes due 2029. Our 2020 capital budget, which was established at the beginning of the year, was originally $520.0 million with actual spending for 2020 approximately $109.3 million lower. As we have done historically, we may adjust our capital program, divest assets and use derivatives to protect a portion of our future cash flow from commodity price volatility to reduce the risk of returns on investment and maintain ample liquidity.

• Successful drilling program – In 2020, we drilled 52 gross natural gas wells and our overall drilling success rate was 100%. We continue to maintain and optimize a sufficient inventory of drilled lateral footage which is critical to our ability to consistently sustain production each year on a cost effective and efficient basis. Controlling the costs to find, develop and produce natural gas, NGLs and oil is critical in creating long-term stockholder value. Our focus areas are characterized by large, contiguous acreage positions and multiple stacked geologic horizons. In 2020, we continued to reduce average well costs per foot drilled through faster drilling times, longer laterals and innovative completion optimizations.

• Large resource potential – Maintaining an exposure to large low-cost potential resources is important. We maintained and continued to develop our shale plays in 2020. We have three large unconventional and prospective plays in Pennsylvania: the Marcellus, Utica and Upper Devonian shales. These plays cover expansive areas, provide multi-year drilling opportunities, are in many cases stacked pay and, collectively, have sustainable lower risk profiles.  

• Dispositions completed – In third quarter 2020, we sold North Louisiana assets for cash proceeds of $245.0 million (before normal closing adjustments) and we recorded a pretax loss of $9.5 million, after closing adjustments and transaction fees. Proceeds from this disposition were used to repay debt.

Segment and Geographical Information

Our operations consist of one reportable segment. We have a single, company-wide management team that administers all properties as a whole rather than by discrete operating segments. We track only basic operational data by area. We do not maintain complete separate financial statement information by area. We measure financial performance as a single enterprise and not on an area-by-area basis. Our exploration and production operations are limited to onshore United States.

Outlook for 2021

For 2021, we have established a $425.0 million capital budget for natural gas, NGLs, crude oil and condensate related activities, excluding proved property acquisitions, for which we do not budget. This budget includes $401.1 million for drilling costs, $20.0 million for acreage and $3.9 million for other expenditures. As has been our historical practice, we will periodically review our capital expenditures throughout the year and may adjust the budget based on commodity prices, drilling success and other factors. Throughout the year, we allocate capital on a project-by-project basis. Our expectation for 2021 is for our capital expenditure program to be funded within operating cash flows. However, to the extent our 2021 capital requirements might exceed our internally generated cash flow, we may reduce the capital budget or use proceeds from asset sales, draw on our committed capacity under our bank credit facility, and/or debt or equity financing may be used to fund these requirements. The prices we receive for our natural gas, NGLs and oil production are largely based on current market prices, which are beyond our control. The price risk on a portion of our forecasted natural gas, NGLs and oil production for 2021 is mitigated using commodity derivative contracts and we intend to continue to enter into these transactions.

Our primary near-term focus includes the following:

• Operate safely and efficiently;

• target limiting capital spending at or below cash flow;

• reduce direct emissions and target net-zero direct emissions by 2025;

• achieve competitive returns on investments;

• preserve liquidity and improve financial strength;

• focus on organic opportunities through disciplined capital investments;

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• improve operational efficiencies and economic returns;

• target limiting capital spending at or below cash flow;

• attract and retain quality employees; and

• align incentives with our stockholders’ interests and key business objectives.

Proved Reserves

The following table sets forth our estimated proved reserves for years ended 2020, 2019 and 2018 based on the average of prices on the first day of each month of the given calendar year, in accordance with SEC rules. Oil includes both crude oil and condensate. We have no natural gas, NGLs or oil reserves from non-traditional sources. Additionally, we do not provide optional disclosures of probable or possible reserves.

	Summary of Oil and Gas Reserves as of Year-End Based on Average Prices
Reserve Category	Natural Gas (Mmcf)		NGLs (Mbbls)		Oil (Mbbls)		Total (Mmcfe) (a)		%
2020:
Proved
Developed		6,350,057		550,771		22,976		9,792,540		57	%
Undeveloped		4,798,503		400,695		34,650		7,410,574		43	%
Total Proved		11,148,560		951,466		57,626		17,203,114		100	%
2019:
Proved
Developed		6,486,211		535,007		34,369		9,902,468		54	%
Undeveloped		5,628,766		403,229		40,163		8,289,115		46	%
Total Proved		12,114,977		938,236		74,532		18,191,583		100	%
2018:
Proved
Developed		6,451,012		512,318		38,658		9,756,870		54	%
Undeveloped		5,576,690		409,276		47,198		8,315,536		46	%
Total Proved		12,027,702		921,594		85,856		18,072,406		100	%

^(a) Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

The following table sets forth summary information by area with respect to estimated proved reserves at December 31, 2020:

	Reserve Volumes											PV-10 (a)
	Natural Gas (Mmcf)		NGLs (Mbbls)		Oil (Mbbls)		Total (Mmcfe)		%			Amount (In thousands)		%
Appalachian Region		11,148,359		951,466		57,602		17,202,765		100	%	$	2,980,242		100	%
Other		201		—		24		349		—	%		524		—	%
Total		11,148,560		951,466		57,626		17,203,114		100	%	$	2,980,766		100	%

^(a)  PV-10 was prepared using the twelve-month average prices for 2020, discounted at 10% per annum. Year-end PV-10 is a non-GAAP financial measure as defined by the SEC. We believe that the presentation of PV-10 is relevant and useful to our investors as supplemental disclosure to the standardized measure, or after tax amount, because it presents the discounted future net cash flows attributable to our proved reserves prior to taking into account future corporate income taxes and our current tax structure. While the standardized measure is dependent on the unique tax situation of each company, PV-10 is based on prices and discount factors that are consistent for all companies. Because of this, PV-10 can be used within the industry and by creditors and securities analysts to evaluate estimated net cash flows from proved reserves on a more comparable basis. Our total standardized measure was $2.8 billion at December 31, 2020. The difference between the standardized measure and the PV-10 amount is the discounted estimated future income tax of $134.4 million at December 31, 2020. Included in the $3.0 billion pretax PV-10 is $2.7 billion related to proved developed reserves.

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Reserve Estimation

All reserve information in this report is based on estimates prepared by our petroleum engineering staff and is the responsibility of management. We have established internal controls over our reserves estimation process and procedures to support the accurate and timely preparation and disclosure of reserve estimates in accordance with SEC requirements. We also had Netherland Sewell & Associates, Inc., an independent petroleum consultant, conduct an audit of our year-end 2020 reserves in the Appalachian region. The purpose of this audit was to provide additional assurance on the reasonableness of internally prepared reserve estimates. This engineering firm was selected for its geographic expertise and its historical experience in engineering certain properties. The proved reserve audits performed for 2020, 2019 and 2018, in the aggregate, represented 97%, 90% and 94% of our proved reserves. The reserve audits performed for 2020, 2019 and 2018, in the aggregate represented 99%, 94% and 96% of our 2020, 2019 and 2018 associated pretax present value of proved reserves discounted at ten percent. A copy of the summary reserve report prepared by our independent petroleum consultant is included as an exhibit to this Annual Report on Form 10-K. The technical person at our independent petroleum consulting firm responsible for reviewing the reserve estimates presented herein meets the requirements regarding qualifications, independence, objectivity and confidentiality as set forth in the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers. We maintain an internal staff of petroleum engineers and geoscience professionals who work closely with our independent petroleum consultant to ensure the integrity, accuracy and timeliness of data furnished during the reserve audit process. Throughout the year, our technical team meets periodically with representatives of our independent petroleum consultant to review properties and discuss methods and assumptions. While we have no formal committee specifically designated to review reserves reporting and the reserve estimation process, our senior management reviews and approves significant changes to our proved reserves. We provide historical information to our consultant for our largest producing properties such as ownership interest, natural gas, NGLs and oil production, well test data, commodity prices and operating and development costs. Our consultants perform an independent analysis and differences are reviewed with our Senior Vice President of Reservoir Engineering and Economics. In some cases, additional meetings are held to review identified reserve differences. Our reserve auditor estimates of proved reserves and the pretax present value of such reserves discounted at 10% did not differ from our estimates by more than 10% in the aggregate. However, when compared on a lease-by-lease, field-by-field or area-by-area, some of our estimates may be greater than those of our auditor and some may be less than the estimates of the reserve auditor. When such differences do not exceed 10% in the aggregate, our reserve auditor is satisfied that the proved reserves and pretax present value of such reserves discounted at 10% are reasonable and will issue an unqualified opinion. Remaining differences, if any, are not resolved due to the limited cost benefit of continuing such analysis.

Historical variances between our reserve estimates and the aggregate estimates of our independent petroleum consultants have been less than 5%. All of our reserve estimates are reviewed and approved by our Senior Vice President of Reservoir Engineering and Economics, Mr. Alan Farquharson, who reports directly to our President and Chief Executive Officer. Our Senior Vice President of Reservoir Engineering and Economics holds a Bachelor of Science degree in Electrical Engineering from the Pennsylvania State University. Before joining Range, he held various technical and managerial positions with Amoco, Hunt Oil and Union Pacific Resources and has more than forty years of engineering experience in the oil and gas industry. During the year, our reserves group may also perform separate, detailed technical reviews of reserve estimates for significant acquisitions or for properties with problematic indicators such as excessively long lives, sudden changes in performance or changes in economic or operating conditions. We did not file any reports during the year ended December 31, 2020 with any federal authority or agency with respect to our estimate of natural gas and oil reserves.

Reserve Technologies

Proved reserves are those quantities of natural gas, NGLs and oil that by analysis of geoscience and engineering data can be estimated with reasonable certainty to be economically producible from a given date forward, from known reservoirs and under existing economic conditions, operating methods, and government regulations. The term “reasonable certainty” implies a high degree of confidence that the quantities of natural gas, NGLs and oil actually recovered will equal or exceed the estimate. To achieve reasonable certainty, our internal technical staff employs technologies that have been demonstrated to yield results with consistency and repeatability. The technologies and economic data used in the estimation of our proved reserves include, but are not limited to, empirical evidence through drilling results and well performance, decline curve analysis, well logs, geologic maps and available downhole and production data, seismic data, well test data, reservoir simulation modeling and implementation and application of enhanced data analytics.

Proved undeveloped reserves (or “PUDs”) include reserves that are expected to be recovered from new wells on undrilled acreage or from existing wells where a major expenditure is required for completion. PUD reserves may be classified as proved reserves on undrilled acreage directly offsetting development areas that are reasonably certain of production when drilled, or where reliable technology provides reasonable certainty of economic production. Undrilled locations may be classified as having PUD reserves only if an ability and intent has been established to drill the reserves within five years, unless specific circumstances justify a longer time period.

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Reporting of Natural Gas Liquids

We produce NGLs as part of the processing of our natural gas. The extraction of NGLs in the processing of natural gas reduces the volume of natural gas available for sale. At December 31, 2020, NGLs represented approximately 33% of our total proved reserves on an mcf equivalent basis. NGLs are products priced by the gallon (and sold by the barrel) to our customers. In reporting proved reserves and production of NGLs, we have included production and reserves in barrels. Prices for a barrel of NGLs in 2020 averaged approximately 51% of the average price for equivalent volumes of oil. We report all production information related to natural gas net of the effect of any reduction in natural gas volumes resulting from the processing of NGLs.  We currently include ethane in our proved reserves which match volumes to be delivered under our existing long-term, extendable ethane contracts.

Proved Undeveloped Reserves

As of December 31, 2020, our PUDs totaled 34.7 Mmbbls of crude oil, 400.7 Mmbbls of NGLs and 4.8 Tcf of natural gas, for a total of 7.4 Tcfe. Costs incurred in 2020 relating to the development of PUDs were approximately $341.0 million. All PUD drilling locations are scheduled to be drilled prior to the end of 2025. As of December 31, 2020, we have 62 Bcfe of reserves that have been reported for more than five years from their original booking date, all of which are in the process of being completed and are expected to turn to sales in 2021. Changes in PUDs that occurred during the year were due to:

• conversion of approximately 1.3 Tcfe of PUDs into proved developed reserves;

• addition of 1.2 Tcfe new PUDs from drilling;

• 675.1 Bcfe net negative revision with 961.1 Bcfe of reserves reclassified to unproved because of previously planned wells not expected to be drilled within the original five-year development horizon partially offset by positive performance revisions of 286.0 Bcfe; and

• 175.3 Bcfe reduction from the sale of properties.

For an additional description of changes in PUDs for 2020, see Note 19 to our consolidated financial statements. We believe our PUDs reclassified to unproved can be included in our future proved reserves as these locations are added back into our five-year development plan.

Proved Reserves (PV-10)

The following table sets forth the estimated future net cash flows, excluding open derivative contracts, from proved reserves, the present value of those net cash flows discounted at a rate of 10% (PV-10), and the expected benchmark prices and average field prices used in projecting net cash flows over the past five years. Our reserve estimates do not include any probable or possible reserves (in millions, except prices):

		2020		2019		2018		2017		2016
Future net cash flows	$	9,795	$	22,179	$	34,836	$	21,469	$	10,301
Present value:
Before income tax		2,981		7,561		13,173		8,147		3,727
After income tax (Standardized Measure)		2,846		6,629		11,116		7,165		3,452
Benchmark prices (NYMEX):
Gas price (per mcf)		1.98		2.58		3.10		2.98		2.48
Oil price (per bbl)		39.77		55.73		65.55		51.19		42.68
Wellhead prices:
Gas price (per mcf)		1.68		2.38		2.98		2.60		2.07
Oil price (per bbl)		30.13		49.24		59.96		45.73		37.41
NGLs price (per bbl)		16.14		17.32		25.22		17.84		13.44

Future net cash flows represent projected revenues from the sale of proved reserves, net of production and development costs (including transportation and gathering expenses, operating expenses and production taxes). Revenues are based on a twelve-month unweighted average of the first day of the month pricing, without escalation. Future cash flows are reduced by estimated production costs, administrative costs, costs to develop and produce the proved reserves and abandonment costs, all based on current economic conditions at each year-end. There can be no assurance that the proved reserves will be produced in the future or that prices, production or development costs will remain constant. There are numerous uncertainties inherent in estimating reserves and related information and different reservoir engineers often arrive at different estimates for the same properties.

Property Overview

Currently, our natural gas and oil operations are concentrated in the Appalachian region of the United States, in the Marcellus Shale in Pennsylvania. Our properties consist of interests in developed and undeveloped natural gas and oil leases. These interests

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entitle us to drill for and produce natural gas, NGLs, crude oil and condensate from specific areas. Our interests are mostly in the form of working interests and, to a lesser extent, royalty and overriding royalty interests. We have a single company-wide management team that administers all properties as a whole. We track only basic operational data by area. We do not maintain complete separate financial statement information by area. We measure financial performance as a single enterprise and not on an area-by-area basis. The table below summarizes our operating data for the year ended December 31, 2020.

Region	Average Daily Production (mcfe per day)	Production (Mmcfe)	Percentage of Production		Proved Reserves (Mmcfe)	Percentage of Proved Reserves
Appalachian	2,126,875	778,436	95	%	17,202,765	100	%
North Louisiana (1)	103,802	37,991	5	%	—		%
Other	76	28	—	%	349	—	%
Total	2,230,753	816,455	100	%	17,203,114	100	%

⁽¹⁾ Our North Louisiana assets were sold in third quarter 2020.

The following table summarizes our costs incurred for the year ended December 31, 2020 (in thousands):

Region		Acreage Purchases			Development Costs		Exploration Costs		Gathering Facilities		Asset Retirement Obligations		Total
Appalachian	$	26,185		$	368,040	$	40,250	$	2,760	$	2,525	$	439,760
North Louisiana (1)		(19	)		1,053		114		934		85		2,167
Total costs incurred	$	26,166		$	369,093	$	40,364	$	3,694	$	2,610	$	441,927

⁽¹⁾ Our North Louisiana assets were sold in third quarter 2020.

Our proved reserves at December 31, 2020 are almost exclusively located in the Marcellus Shale in the Appalachian region. This play has a large portfolio of drilling opportunities and therefore has a significant unbooked resource potential within the Marcellus, Utica and Upper Devonian formations. The following table sets forth annual production volumes, average sales prices and production cost data for our wells in the Marcellus Shale play which is the only field in which our reserves are greater than 15% of our total proved reserves.

	Marcellus Shale
	2020		2019		2018
Production:
Natural gas (Mmcf)		544,079		516,031		458,406
NGLs (Mbbls)		36,185		36,013		34,181
Crude oil and condensate (Mbbls)		2,599		3,199		3,452
Total Mmcfe (a)		776,786		751,299		684,205
Sales Prices: (b)
Natural gas (per mcf)	$	0.49	$	1.13	$	1.77
NGLs (per bbl)		4.91		7.12		13.08
Crude oil and condensate (per bbl)		29.24		49.73		59.76
Total (per mcfe) (a)		0.67		1.33		2.14
Production Costs:
Lease operating (per mcfe)	$	0.10	$	0.11	$	0.11
Production and ad valorem tax (per mcfe) (c)		0.02		0.03		0.05

^(a)  Oil and NGLs volumes are converted at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

^(b)  We do not record derivatives or the results of derivatives at the field level. Includes deductions for third-party transportation, gathering and compression expense.

^(c)  Includes Pennsylvania impact fee.

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Appalachian Region

As of the end of December 2020, essentially all of our properties are located in the Appalachian Basin in the northeastern United States. Currently, our reserves are primarily in the Marcellus Shale formation but also include the Utica and Upper Devonian formations which principally produce at depths ranging from 6,000 feet to 11,500 feet. We own 1,310 net producing wells, almost all of which we operate. Our average working interest in this region is 94%. As of December 31, 2020 we have approximately 886,000 gross (781,000 net) acres under lease.

We began operations in the Marcellus Shale in Pennsylvania during 2004. The Marcellus Shale is an unconventional reservoir, which produces natural gas, NGLs and condensate. This has been our largest investment area over the last ten years and we continue to pursue initiatives to improve drilling and completion efficiencies and reduce costs. Our 2020 production from the Marcellus Shale increased 3% from 2019. During 2020, we had approximately two drilling rigs in the field and expect to run an average of two rigs throughout 2021.

Reserves at December 31, 2020 were 17.2 Tcfe, a decrease of 122.3 Bcfe, or less than 1%, from 2019. Drilling additions of 1.3 Tcfe and favorable reserve revisions for performance of 420.9 Bcfe were partially offset by production, negative pricing revisions and downward revisions for proved undeveloped reserves no longer in our current five-year development plan of 961.1 Bcfe. Annual production increased 3% from 2019. During 2020, we spent $368.0 million in this region to drill 52 (51.4 net) development wells, all of which were productive. At December 31, 2020, we had an inventory in the Appalachian region of over 3,500 proven drilling locations. During the year, we drilled 66 proven locations in the Appalachian region, added 60 new proven drilling locations and deleted or sold 76 proven drilling locations with deleted reserves reclassified to unproved because of longer laterals and lower future capital spending in response to lower commodity prices. During the year, we achieved a 100% drilling success rate.

We have long-term agreements with third parties to provide gathering and processing services and infrastructure assets in the Marcellus Shale, which includes gathering and residue gas pipelines, compression, cryogenic processing, de-ethanization and NGLs fractionation. We have an ethane sales contract in southwestern Pennsylvania whereby a third party purchases and transports ethane from the tailgate of third-party processing and fractionation facilities to the international border for further deliveries into Canada. We also have agreements to transport ethane to the Gulf Coast. In 2012, we entered into a fifteen-year agreement to transport ethane and propane from the tailgate of a third-party processing plant to a terminal and dock facility near Philadelphia for sale to domestic and international customers. Also in 2012, we executed a fifteen-year agreement relating to ethane sales from that same terminal near Philadelphia. Propane and ethane operations from the terminal began in early 2016.

North Louisiana

We began operations in North Louisiana in September 2016 as a result of an acquisition of a business. As of third quarter 2020, we sold these operations.

Divestitures

Over the last three years, we have divested over $1.4 billion of assets in order to increase capital resources available for other activities, reduce our unit cost structure, create organizational and operating efficiencies and increase financial flexibility. In 2020, we sold the following assets:

North Louisiana. In third quarter 2020, we sold our North Louisiana assets for cash proceeds of $245.0 million, before normal closing adjustments.

Pennsylvania. In first quarter 2020, we completed the sale of our Northwest Pennsylvania properties for $1.0 million. We retained the deep rights in this area.

Miscellaneous. During the year ended December 31, 2020, we sold miscellaneous unproved property, inventory and other assets for proceeds of $127,000.

Producing Wells

The following table sets forth information relating to productive wells at December 31, 2020. If we own both a royalty and a working interest in a well, such interest is included in the table below. Wells are classified as natural gas or crude oil according to their predominant production stream. We do not have a significant number of dual completions.

			Average
	Total Wells		Working
	Gross	Net	Interest
Natural gas	1,393	1,309	94%
Crude oil	3	1	34%
Total	1,396	1,310	94%

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Production wells are producing wells and wells mechanically capable of production. The day-to-day operations of natural gas and oil properties are the responsibility of the operator designated under pooling or operating agreements. The operator supervises production, maintains production records, employs or contracts for field personnel and performs other functions. An operator receives reimbursement for direct expenses incurred in the performance of its duties as well as monthly per-well producing and drilling overhead reimbursement at rates customarily charged by unaffiliated third parties. The charges customarily vary with the depth and location of the well being operated.

Drilling Activity

The following table summarizes drilling activity for the past three years. Gross wells reflect the sum of all wells in which we own an interest. Net wells reflect the sum of our working interests in gross wells. This information should not be indicative of future performance nor should it be assumed that there was any correlation between the number of productive wells and the natural gas and oil reserves generated thereby. As of December 31, 2020, we had 40.0 gross (38.4 net) wells in the process of drilling or active completions stage. In addition, there were 33.0 gross (33.0 net) wells waiting on completion or waiting on pipelines at year-end 2020.

	2020						2019						2018
	Gross			Net			Gross			Net			Gross			Net
Development wells
Productive		52.0			51.4			94.0			92.6			104.0			101.7
Dry		—			—			—			—			—			—
Exploratory wells
Productive		—			—			—			—			—			—
Dry		—			—			—			—			—			—
Total wells
Productive		52.0			51.4			94.0			92.6			104.0			101.7
Dry		—			—			—			—			—			—
Total		52.0			51.4			94.0			92.6			104.0			101.7
Success ratio		100	%		100	%		100	%		100	%		100	%		100	%

Gross and Net Acreage

We own interests in developed and undeveloped natural gas and oil acreage. These ownership interests generally take the form of working interests in oil and natural gas leases that have varying terms. Developed acreage includes leased acreage that is allocated or assignable to producing wells or wells capable of production even though shallower or deeper horizons may not have been fully explored. Undeveloped acreage includes leased acres on which wells have not been drilled or completed to a point that would permit the production of commercial quantities of natural gas or oil, regardless of whether or not the acreage contains proved reserves. The following table sets forth certain information regarding the developed and undeveloped acreage in which we own a working interest as of December 31, 2020. Acreage related to option acreage, royalty, overriding royalty and other similar interests is excluded from this summary:

	Developed Acres			Undeveloped Acres			Total Acres
	Gross	Net		Gross	Net		Gross	Net
Michigan	111	111		—	—		111	111
New York	—	—		2,265	567		2,265	567
Oklahoma	21,867	9,329		—	—		21,867	9,329
Pennsylvania	798,538	701,007		79,694	74,418		878,232	775,425
Texas	6,242	4,322		—	—		6,242	4,322
West Virginia	5,876	5,197		—	—		5,876	5,197
Wyoming	—	—		3,121	1,316		3,121	1,316
	832,634	719,966		85,080	76,301		917,714	796,267
Average working interest		86	%		90	%		87	%

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Undeveloped Acreage Expirations

The table below summarizes by year our undeveloped acreage scheduled to expire in the next five years.

As of December 31,	Acres		% of Total
	Gross	Net	Undeveloped
2021	22,132	19,333		25%
2022	15,113	14,476		19%
2023	19,818	19,013		25%
2024	14,291	12,871		17%
2025	9,612	8,219		11%

In all cases, the drilling of a commercial well will hold acreage beyond the lease expiration date. We have leased acreage that is subject to lease expiration if initial wells are not drilled within a specified period, generally between three and five years. However, we have in the past been able, and expect in the future to be able, to extend the lease terms of some of these leases and sell or exchange some of these leases with other companies. The expirations included in the table above do not take into account the fact that we may be able to extend the lease terms. We do not expect to lose significant lease acreage because of failure to drill due to inadequate capital, equipment or personnel. However, based on our evaluation of prospective economics, we have allowed acreage to expire and we expect to allow additional acreage to expire in the future. We currently have no proved undeveloped reserve locations scheduled to be drilled after lease expiration.

Title to Properties

We believe that we have satisfactory title to all of our producing properties in accordance with generally accepted industry standards. As is customary in the industry, in the case of undeveloped properties, often minimal investigation of record title is made at the time of lease acquisition. Investigations are made before the consummation of an acquisition of producing properties and before commencement of drilling operations on undeveloped properties. Individual properties may be subject to burdens that we believe do not materially interfere with the use, or affect the value, of the properties. Burdens on properties may include:

• customary royalty or overriding royalty interests;

• liens incident to operating agreements and for current taxes;

• obligations or duties under applicable laws;

• development obligations under oil and gas leases; or

• net profit interests.

Delivery Commitments

For a discussion of our delivery commitments, see Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations – Delivery Commitments.

Human Capital Management

We believe our employees provide the foundation of our success. Successful execution of our strategy is dependent on attracting, developing and retaining our skilled employees and members of our management team. The abilities, experience and industry knowledge of our employees significantly benefit our operations and performance and in order to maximize the contributions of our employees, we continuously evaluate, modify and enhance our policies and practices, including compensation to increase employee engagement, productivity and efficiency. As of January 1, 2021, we had 533 full time employees, none of whom are currently covered by a labor union or other collective bargaining arrangement.

There are several ways in which we attract, develop and retain highly qualified talent including:

• The safety and health of our employees is a top priority. We strive for zero workplace injuries.

• Employee education and training is used to reinforce our core values. We conducted field safety orientations for approximately 7,000 people in 2020 (consisting of both Range employees and contractors). We have an education reimbursement program to encourage continued academic achievement and we provide in-house training and pay for outside training in a number of areas.

• We emphasize employee development and provide a wide range of opportunities, skills and resources to aid in the success of our employees, including through programs such as our Leadership Excellence and Development (LEAD) program where high-performing employees are offered special management preparedness training and development.

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• We strive to enhance diversity and inclusion at every level of our organization.  In 2020, we launched a voluntary employee resource group for women to foster inclusion and belonging.

Our compensation program includes eligibility for all full-time employees to receive equity awards which we believe is somewhat unique among our peers and encourages every employee to think like an owner of the business and be vested in its success.  We have a robust talent and succession planning process and support the development of our talent pipeline for critical roles.

Executive Officers of the Registrant

The executive officers of Range Resources and their ages as of February 1, 2021, are as follows:

	Age	Position
Jeffrey L. Ventura	63	Chief Executive Officer and President
Mark S. Scucchi	43	Senior Vice President – Chief Financial Officer
Dennis L. Degner	48	Senior Vice President – Chief Operating Officer
Dori A. Ginn	63	Senior Vice President – Controller and Principal Accounting Officer
David P. Poole	58	Senior Vice President – General Counsel and Corporate Secretary

Jeffrey L. Ventura, chief executive officer and president, joined Range in 2003 as chief operating officer and became a director in 2005. Mr. Ventura was named President, effective May 2008 and Chief Executive Officer effective January 2012. Previously, Mr. Ventura served as president and chief operating officer of Matador Petroleum Corporation which he joined in 1997. Prior to his service at Matador, Mr. Ventura spent eight years at Maxus Energy Corporation where he managed various engineering, exploration and development operations and was responsible for the coordination of engineering technology. Previously, Mr. Ventura was with Tenneco Oil Exploration and Production, where he held various engineering and operating positions. Mr. Ventura holds a Bachelor of Science degree in Petroleum and Natural Gas Engineering from the Pennsylvania State University. Mr. Ventura is a member of the Society of Petroleum Engineers, the American Association of Petroleum Geologists and the Texas Society of Professional Engineers.

Mark S. Scucchi, senior vice president – chief financial officer. Mr. Scucchi was named senior vice president – chief financial officer in 2018. Mr. Scucchi joined Range in 2008. Previously, Mr. Scucchi served as vice president – finance & treasurer. Prior to joining Range, Mr. Scucchi was with JPMorgan Securities providing commercial and investment banking services to small and mid-cap technology companies. Before joining JPMorgan Securities, Mr. Scucchi spent a number of years at Ernst & Young LLP in the audit practice. Mr. Scucchi earned a Bachelor of Science in Business Administration from Georgetown University and a Master of Science in Accountancy from the University of Notre Dame. Mr. Scucchi is a CFA Charterholder and a licensed certified public accountant in the state of Texas.

Dennis L. Degner, senior vice president of operations, joined Range in 2010. Mr. Degner was named senior vice president of operations in 2018 and Chief Operating Officer in May 2019. Previously, Mr. Degner served as vice president of Appalachia. Mr. Degner has more than 20 years of oil and gas experience, having worked in a variety of technical and managerial positions across the United States including Texas, Louisiana, Wyoming, Colorado and Pennsylvania. Prior to joining Range, Mr. Degner held positions with EnCana, Sierra Engineering and Halliburton. Mr. Degner is a member of the Society of Petroleum Engineers. Mr. Degner holds a Bachelor of Science Degree in Agricultural Engineering from Texas A&M University.

Dori A. Ginn, senior vice president – controller and principal accounting officer, joined Range in 2001. Ms. Ginn has held the positions of financial reporting manager, vice president and controller before being elected to principal accounting officer in September 2009. Prior to joining Range, she held various accounting positions with Doskocil Manufacturing Company and Texas Oil and Gas Corporation. Ms. Ginn received a Bachelor of Business Administration in Accounting from the University of Texas at Arlington. She is a certified public accountant licensed in the state of Texas.

David P. Poole, senior vice president – general counsel and corporate secretary, joined Range in June 2008. Mr. Poole has over 30 years of legal experience. From May 2004 until March 2008 he was with TXU Corp., serving last as executive vice president – legal, and general counsel. Prior to joining TXU, Mr. Poole spent 16 years with Hunton & Williams LLP and its predecessor, where he was a partner and last served as the managing partner of the Dallas office. Mr. Poole graduated from Texas Tech University with a B.S. in Petroleum Engineering and received a J.D. magna cum laude from Texas Tech University School of Law.

Competition

Competition exists in all sectors of the oil and gas industry and in particular, we encounter substantial competition in developing and acquiring natural gas and oil properties, securing and retaining personnel, conducting drilling and field operations and marketing production. Competitors in exploration, development, acquisitions and production include the major oil and gas companies as well as numerous independent oil and gas companies, individual proprietors and others. Although our sizable acreage position and core area

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concentration provide some competitive advantages, many competitors have financial and other resources substantially exceeding ours. Therefore, competitors may be able to pay more for desirable leases and evaluate, bid for and purchase a greater number of properties or prospects than our financial or personnel resources allow. We face competition for pipeline and other services to transport our product to markets, particularly in the Northeastern portion of the United States. Competitive advantage is gained in the oil and gas exploration and development industry by employing well-trained and experienced personnel who make prudent capital investment decisions based on management direction, embrace technological innovation and are focused on price and cost management. We have a team of dedicated employees who represent the professional disciplines and sciences that we believe are necessary to allow us to maximize the long-term profitability and net asset value inherent in our physical assets. For more information, see Item 1A. Risk Factors.

Marketing and Customers

We market the majority of our natural gas, NGLs, crude oil and condensate production from the properties we operate for our interest, and that of the other working interest owners. We pay our royalty owners from the sales attributable to our working interest. Natural gas, NGLs and oil purchasers are selected on the basis of price, credit quality and service reliability. For a summary of purchasers of our natural gas, NGLs and oil production that accounted for 10% or more of consolidated revenue, see Note 2 to our consolidated financial statements. Because alternative purchasers of natural gas and oil are usually readily available, we believe that the loss of any of these purchasers would not have a material adverse effect on our operations. Production from our properties is marketed using methods that are consistent with industry practice. Sales prices for natural gas, NGLs and oil production are negotiated based on factors normally considered in the industry, such as index or spot price, distance from the well to the pipeline, commodity quality and prevailing supply and demand conditions. Our natural gas production is sold to utilities, marketing and midstream companies and industrial users. Our NGLs production is typically sold to petrochemical end users, marketers/traders (both domestically and internationally) and natural gas processors. Our oil and condensate production is sold to crude oil processors, transporters and refining and marketing companies.

We enter into derivative transactions with unaffiliated third parties for a varying portion of our production to achieve more predictable cash flows and to reduce our exposure to short-term fluctuations in natural gas, NGLs and oil prices. For a more detailed discussion, see Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations and Item 7A. Quantitative and Qualitative Disclosures about Market Risk.

We incur gathering and transportation expense to move our production from the wellhead, tanks and processing plants to purchaser-specified delivery points. These expenses vary and are primarily based on volume, distance shipped and the fee charged by the third-party gatherers and transporters. We also have contracts based on percent of proceeds. Transportation capacity on these gathering and transportation systems and pipelines is occasionally constrained. Our Appalachian production is transported on third-party pipelines on which, in most cases, we hold long-term contractual capacity. We attempt to balance sales, storage and transportation positions, which can include purchase of commodities from third parties for resale, to satisfy transportation commitments.

We have not experienced significant difficulty to date in finding a market for all of our production as it becomes available or in transporting our production to those markets; however, there is no assurance that we will always be able to transport and market all of our production or obtain favorable prices. We have entered into several ethane agreements to sell or transport ethane from our Marcellus Shale area. For more information, see Item 1A. Risk Factors – Our business depends on natural gas and oil transportation and NGLs processing facilities, most of which are owned by others and we rely on our ability to contract with those parties.

Seasonal Nature of Business

Generally, but not always, the demand for natural gas and propane decreases during the spring and fall months and increases during the winter months and, in some areas, also increases during the summer months. Seasonal anomalies such as mild winters or hot summers also may impact this demand. In addition, pipelines, utilities, local distribution companies and industrial end-users utilize natural gas storage facilities and purchase some of their anticipated winter requirements during the summer. This can also impact the seasonality of demand.

Markets

Our ability to produce and market natural gas, NGLs and oil profitably depends on numerous factors beyond our control. The effect of these factors cannot be accurately predicted or anticipated. Although we cannot predict the occurrence of events that may affect commodity prices or the degree to which commodity prices will be affected, the prices for any commodity that we produce will generally approximate current market prices in the geographic region of the production.

Governmental Regulation

Enterprises that sell securities in public markets are subject to regulatory oversight by federal agencies such as the SEC. The NYSE, a private stock exchange, also requires us to comply with listing requirements for our common stock. This regulatory oversight

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imposes on us the responsibility for establishing and maintaining disclosure controls and procedures and internal controls over financial reporting, and ensuring that the financial statements and other information included in submissions to the SEC do not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made in such submissions not misleading. Failure to comply with the NYSE listing rules and regulations of the SEC could subject us to litigation from public or private plaintiffs. Failure to comply with the rules of the NYSE could also result in the de-listing of our common stock, which could have an adverse effect on the market price of our common stock. Compliance with some of these rules and regulations is costly and regulations are subject to change or reinterpretation.

Exploration and development and the production and sale of oil and gas are subject to extensive federal, state and local regulations, mandates and trade agreements. Governmental policies affecting the energy industry, such as taxes, tariffs, duties, price controls, subsidies, incentives, foreign exchange rates and import and export restrictions, can influence the viability and volume of production of certain commodities, the volume and types of imports and exports, whether unprocessed or processed commodity products are traded, and industry profitability. For example, the decision of the United States government to impose tariffs on certain Chinese imports and the resulting retaliation by the Chinese government imposing a twenty-five percent tariff on United States’ liquefied natural gas exports have disrupted certain aspects of the energy market. Despite a trade agreement with China announced in January 2020, China’s twenty-five percent tariff on imports of United States liquefied natural gas is expected to remain in place for now, but eventually could be eased if ongoing discussions progress to a second phase agreement. Disruption and uncertainty of this sort can affect the price of oil and natural gas and may cause us to change our plans for exploration and production levels. An overview of relevant federal, state and local regulations is set forth below. We believe we are in substantial compliance with currently applicable laws and regulations, and the continued substantial compliance with existing requirements will not have a material adverse effect on our financial position, cash flows or results of operations. However, current regulatory requirements may change, currently unforeseen environmental incidents may occur, or past non-compliance with environmental laws or regulations may be discovered. See Item 1A. Risk Factors – The natural gas industry is subject to extensive regulation. We do not believe we are affected differently by these regulations than others in the industry.

General Overview. Our oil and gas operations are subject to various federal, state and local laws and regulations. Generally speaking, these regulations relate to matters that include, but are not limited to:

• leases;

• acquisition of seismic data;

• location of wells, pads, roads, impoundments, facilities, rights of way;

• size of drilling and spacing units or proration units;

• number of wells that may be drilled in a unit;

• unitization or pooling of oil and gas properties;

• drilling, casing and completion of wells;

• issuance of permits in connection with exploration, drilling, production, gathering, processing and transportation;

• well production, maintenance, operations and security;

• spill prevention and containment plans;

• emissions permitting or limitations;

• protection of endangered species;

• use, transportation, storage and disposal of hazardous waste, fluids and materials incidental to oil and gas operations;

• surface usage and the restoration of properties upon which wells have been drilled;

• calculation and disbursement of royalty payments and production taxes;

• plugging and abandoning of wells;

• hydraulic fracturing;

• water withdrawal;

• operation of underground injection wells to dispose of produced water and other liquids;

• the marketing of production;

• transportation of production; and

• health and safety of employees and contract service providers.

In August 2005, the United States Congress (“Congress”) enacted the Energy Policy Act of 2005 (“EPAct 2005”). Among other matters, EPAct 2005 amends the Natural Gas Act (“NGA”) to make it unlawful for “any entity,” including otherwise non-jurisdictional producers such as Range, to use any deceptive or manipulative device or contrivance in connection with the purchase or sale of natural gas or the purchase or sale of transportation services subject to regulation by the Federal Energy Regulatory Commission (the “FERC”), in contravention of rules prescribed by the FERC. In January 2006, the FERC issued rules implementing

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this provision. The rules make it unlawful in connection with the purchase or sale of natural gas subject to the jurisdiction of the FERC, or the purchase or sale of transportation services subject to the jurisdiction of the FERC, for any entity, directly or indirectly, to use or employ any device, scheme or artifice to defraud; to make any untrue statement of material fact or omit any such statement necessary to make the statements not misleading; or to engage in any act or practice that operates as a fraud or deceit upon any person. EPAct 2005 also gives the FERC authority to impose civil penalties for violations of the NGA. On January 8, 2021, FERC issued a final rule increasing the maximum civil penalty for violations of the NGA from $1,291,894 per day per violation to $1,307,164 per day per violation to account for inflation pursuant to the Federal Civil Penalties Inflation Adjustment Improvement Act of 2015. The anti-manipulation rule does not apply to activities that relate only to intrastate or other non-jurisdictional sales or gathering, but does apply to activities or otherwise non-jurisdictional entities to the extent the activities are conducted “in connection with” gas sales, purchases or transportation subject to the FERC’s jurisdiction which includes the reporting requirements under Order 704 (as defined and described below). Therefore, EPAct 2005 was a significant expansion of the FERC’s enforcement authority. Range has not been affected differently than any other producer of natural gas by this act. Failure to comply with applicable laws and regulations with respect to EPAct 2005 could result in substantial penalties and the regulatory burden on the industry increases the cost of doing business and affects profitability. Although we believe we are in substantial compliance with all applicable laws and regulations with respect to EPAct 2005, such laws and regulations are frequently amended or reinterpreted. Therefore, we are unable to predict the future costs or impact of compliance. Additional proposals and proceedings that affect the oil and natural gas industry are regularly considered by Congress, the states, the FERC, other federal regulatory entities and the courts. We cannot predict when or whether any such proposals may become effective.

In December 2007, the FERC issued a final rule on the annual natural gas transaction reporting requirements, as amended by subsequent orders on rehearing (“Order 704”). Under Order 704, wholesale buyers and sellers of more than 2.2 million MMBtus of physical natural gas in the previous calendar year, including natural gas gatherers and marketers, are required to report to the FERC, on May 1 of each year, aggregate volumes of natural gas purchased or sold at wholesale in the prior calendar year to the extent such transactions utilize, contribute to, or may contribute to the formation of price indices. It is the responsibility of the reporting entity to determine which individual transactions should be reported based on the guidance of Order 704. Order 704 also requires market participants to indicate whether they report prices to any index publishers and, if so, whether their reporting complies with the FERC’s policy statement on price reporting.

Intrastate gas pipeline transportation rates are subject to regulation by state regulatory commissions. The basis for intrastate gas pipeline regulation, and the degree of regulatory oversight and scrutiny given to intrastate gas pipeline rates, varies from state to state. Additional proposals and proceedings that might affect the gas industry are considered from time to time by Congress, FERC, state regulatory bodies and the courts. We cannot predict when or if any such proposals might become effective or their impact, if any, on our operations. We believe that the regulation of intrastate gas pipeline transportation rates will not affect our operations in any way that is materially different from its effects on similarly situated competitors.

Natural gas processing. We depend on gas processing operations owned and operated by third parties. There can be no assurance that these processing operations will continue to be unregulated in the future. However, although the processing facilities may not be directly related, other laws and regulations may affect the availability of gas for processing, such as state regulation of production rates and maximum daily production allowable from gas wells, which could impact our processing.

Gas gathering. Section 1(b) of the NGA exempts gas gathering facilities from FERC jurisdiction. We believe that our gathering facilities meet the tests FERC has traditionally used to establish a pipeline system’s status as a non-jurisdictional gatherer. There is, however, no bright-line test for determining the jurisdictional status of pipeline facilities. Moreover, the distinction between FERC-regulated transmission services and federally unregulated gathering services is the subject of litigation from time to time, so the classification and regulation of some of our gathering facilities may be subject to change based on future determinations by the FERC and the courts. Thus, we cannot guarantee that the jurisdictional status of our gas gathering facilities will remain unchanged.

We depend on gathering facilities owned and operated by third parties to gather from our properties, and therefore we are affected by the rates charged by these third parties for gathering services. To the extent that changes in federal or state regulations affect the rates charged for gathering services at any of these third-party facilities, we may also be affected by these changes. We do not anticipate that we would be affected differently than similarly situated gas producers.

Regulation of transportation and sale of oil and natural gas liquids (“NGLs”). Intrastate liquids pipeline transportation rates, terms and conditions are subject to regulation by numerous federal, state and local authorities and, in a number of instances, the ability to transport and sell such products on interstate pipelines is dependent on pipelines that are also subject to FERC jurisdiction under the Interstate Commerce Act (the “ICA”). We do not believe these regulations affect us differently than other producers.

The ICA requires that pipelines maintain a tariff on file with the FERC. The tariff sets forth the established rates as well as the rules and regulations governing the service. The ICA requires, among other things, that rates and terms and conditions of service on interstate common carrier pipelines be “just and reasonable.” Such pipelines must also provide jurisdictional service in a manner that is not unduly discriminatory or unduly preferential. Shippers have the power to challenge new and existing rates and terms and conditions of service before the FERC.

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The FERC currently regulates rates of interstate liquids pipelines, primarily through an annual indexing methodology, under which pipelines increase or decrease their rates in accordance with an index adjustment specified by the FERC. For the five-year period beginning in July 2016, the FERC established an annual index adjustment equal to the change in the producer price index for finished goods plus 1.23 percent. This adjustment is subject to review every five years. For the five-year period beginning in July 2021, the FERC has established an annual index adjustment equal to the producer price index for finished goods plus 0.78 percent. Under the FERC’s regulations, a liquids pipeline can request a rate increase that exceeds the rate obtained through application of the indexing methodology by using a cost-of-service approach, but only after the pipeline establishes that a substantial divergence exists between the actual costs experienced by the pipeline and the rates resulting from application of the indexing methodology. Increases in liquids transportation rates may result in lower revenue and cash flow.

In addition, due to common carrier regulatory obligations of liquids pipelines, capacity must be prorated among shippers in an equitable manner in the event there are nominations in excess of capacity by current shippers or capacity requests are received from a new shipper. Therefore, new shippers or increased volume by existing shippers may reduce the capacity available to us. Any prolonged interruption in the operation or curtailment of available capacity of the pipelines that we rely upon for liquids transportation could have a material adverse effect on our business, financial condition, results of operations and cash flows.

Environmental and Occupational Health and Safety Matters

Our operations are subject to numerous federal, state and local laws and regulations governing occupational health and safety, the discharge of materials into the environment or otherwise relating to environmental protection, some of which carry substantial administrative, civil and criminal penalties for failure to comply. These laws and regulations may include but are not limited to:  

• the acquisition of a permit before construction commences;

• restriction of the types, quantities and concentrations of various substances that can be released into the environment in connection with drilling, production and transporting through pipelines;

• governing the sourcing and disposal of water used in the drilling and completion process;

• limiting or prohibiting drilling activities on certain lands lying within wilderness, wetlands, frontier and other protected areas;

• requiring some form of remedial action to prevent or mitigate pollution from existing and former operations such as plugging abandoned wells or closing earthen impoundments; and

• imposing substantial liabilities for pollution resulting from operations or failure to comply with regulatory filings.

These laws and regulations also may restrict the rate of production. Moreover, changes in environmental laws and regulations often occur, and any changes that result in more stringent and costly well construction, drilling, water management or completion activities or more restrictive waste handling, storage, transport, disposal or cleanup requirements for any substances used or produced in our operations could materially adversely affect our operations and financial position, as well as those of the oil and natural gas industry in general.

Oil and gas activities have increasingly faced opposition from environmental organizations and, in certain areas, have been restricted or banned by governmental authorities in response to concerns regarding the prevention of pollution or the protection of the environment. Moreover, some environmental laws and regulations may impose strict liability regardless of fault or knowledge, which could subject us to liability for conduct that was lawful at the time it occurred or conduct or conditions caused by prior operators or third parties at sites we currently own or where we have sent wastes for disposal. To the extent future laws or regulations are implemented or other governmental action is taken that prohibits, restricts or materially increases the costs of drilling, or imposes environmental protection requirements that result in increased costs to the oil and gas industry in general, our business and financial results could be adversely affected. The following is a summary of some of the environmental laws to which our operations are subject.

Comprehensive Environmental Response, Compensation and Liability Act. The Comprehensive Environmental Response, Compensation and Liability Act, as amended (“CERCLA”), also known as the “Superfund” law and comparable state laws impose liability, without regard to fault or the legality of the original conduct, on certain classes of persons who are considered to be responsible for the release or threatened release of a “hazardous substance” into the environment. These persons may include owners or operators of the disposal site or sites where the hazardous substance release occurred and companies that disposed of or arranged for the disposal of the hazardous substances at the site where the release occurred. Under CERCLA, all of these persons may be subject to joint and several liability for the costs of cleaning up the hazardous substances that have been released into the environment, for damages to natural resources and for the costs of certain health studies. In addition, it is not uncommon for neighboring landowners and other third parties, pursuant to environmental statutes, common law or both, to file claims for personal injury and property damages allegedly caused by the release of hazardous substances or other pollutants into the environment. Although petroleum, including crude oil and natural gas, is not a “hazardous substance” under CERCLA, at least two courts have ruled that certain wastes associated with the production of crude oil may be classified as “hazardous substances” under CERCLA and that releases of such wastes may therefore give rise to liability under CERCLA. While we generate materials in the course of our

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operations that may be regulated as hazardous substances, we have not received notification that we may be potentially responsible for cleanup costs under CERCLA. In addition, certain state laws also regulate the disposal of oil and natural gas wastes. New state and federal regulatory initiatives that could have a significant adverse impact on us may periodically be proposed and enacted.

Waste handling. We also may incur liability under the Resource Conservation and Recovery Act, as amended (“RCRA”) and comparable state laws, which impose requirements related to the handling and disposal of non-hazardous solid wastes and hazardous wastes. Drilling fluids, produced waters, and other wastes associated with the exploration, development or production of crude oil, natural gas or geothermal energy are currently regulated by the United States Environmental Protection Agency (“EPA”) and state agencies under RCRA’s less stringent non-hazardous solid waste provisions. It is possible that these solid wastes could in the future be reclassified as hazardous wastes, whether by amendment of RCRA or adoption of new laws, which could significantly increase our costs to manage and dispose of such wastes. Moreover, ordinary industrial wastes, such as paint wastes, waste solvents, laboratory wastes and waste compressor oils, may be regulated as hazardous wastes. Although the costs of managing wastes classified as hazardous waste may be significant, we do not expect to experience more burdensome costs than similarly situated companies in our industry. In December 2016, the EPA agreed in a consent decree to review its regulation of oil and gas waste. As a result, on April 23, 2019 the EPA decided to retain its current position on the regulation of oil and gas waste pursuant to RCRA. Nevertheless, any future changes in the laws and regulations could have a material adverse effect on our capital expenditures and operating expenses.

We currently own or lease, and have in the past owned or leased, properties that have been used for many years for the exploration and production of crude oil and natural gas. Petroleum hydrocarbons or wastes may have been disposed of or released on or under the properties owned or leased by us, or on or under other locations where such materials have been taken for disposal. In addition, some of these properties have been operated by third parties whose treatment and disposal or release of petroleum hydrocarbons and wastes was not under our control. These properties and the materials disposed or released on them may be subject to CERCLA, RCRA and comparable state laws and regulations. Under such laws and regulations, we could be required to remove or remediate previously disposed wastes or property contamination, or to perform remedial activities to prevent future contamination.

Water discharges and use. The Federal Water Pollution Control Act, as amended (the “CWA”), and comparable state laws impose restrictions and strict controls regarding the discharge of pollutants, including produced waters and other oil and natural gas wastes, into federal and state waters. The discharge of pollutants into regulated waters is prohibited, except in accordance with the terms of a permit issued by the EPA or the state. These laws also prohibit the discharge of dredge and fill material in regulated waters, including wetlands, unless authorized by permit. These laws and any implementing regulations provide for administrative, civil and criminal penalties for any unauthorized discharges of oil and other substances in reportable quantities and may impose substantial potential liability for the costs of removal, remediation and damages. Pursuant to these laws and regulations, we may be required to obtain and maintain approvals or permits for the discharge of wastewater or storm water and are required to develop and implement spill prevention, control and countermeasure plans, also referred to as “SPCC plans,” in connection with on-site storage of greater than threshold quantities of oil. We regularly review our natural gas and oil properties to determine the need for new or updated SPCC plans and, where necessary, we will be developing or upgrading such plans, the costs of which are not expected to be substantial.

The Oil Pollution Act of 1990, as amended (“OPA”), contains numerous requirements relating to the prevention of and response to oil spills into waters of the United States. The OPA subjects owners of facilities to strict, joint and several liability for all containment and cleanup costs and certain other damages arising from an oil spill, including, but not limited to, the costs of responding to a release of oil to surface waters. While we believe we have been in substantial compliance with OPA, noncompliance could result in varying civil and criminal penalties and liabilities.

The Underground Injection Control Program authorized by the Safe Drinking Water Act prohibits any underground injection unless authorized by a permit. In connection with our operations, Range may dispose of produced water in underground wells, which are designed and permitted to place the water into deep geologic formations, isolated from fresh water sources. However, because some states have become concerned that the disposal of produced water could, under certain circumstances, contribute to seismicity, they have adopted or are considering adopting additional regulations governing such disposal. For example, in February 2018, the Oklahoma Corporation Commission, the state’s oil and gas industry regulator, promulgated more stringent injection well regulations aimed at reducing seismicity in the SCOOP and STACK shale play. Similarly, in February 2019, Ohio lawmakers proposed new legislation that would specifically ban oil and gas injection wells altogether by prohibiting the injection of brine or other waste substances resulting from, obtained from or produced in connection with oil or gas drilling, exploration or production into an underground formation. Should similar onerous regulations or bans relating to underground wells be placed in effect in areas where Range has significant operations, there could be an impact on Range’s ability to operate. We currently do not utilize underground injection in our Pennsylvania operations.

Hydraulic fracturing. Hydraulic fracturing, which has been used by the industry for over 60 years, is an important and common practice to stimulate production of natural gas and/or oil from dense subsurface rock formations. The hydraulic fracturing process involves the injection of water, sand and chemicals under pressure into targeted subsurface formations to fracture the surrounding rock and stimulate production. We routinely apply hydraulic fracturing techniques as part of our operations. This process is typically regulated by state environmental agencies and oil and natural gas commissions; however, several federal agencies have asserted

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regulatory authority over certain aspects of the process. For example, the EPA has issued final regulations under the Clean Air Act (as defined below) governing performance standards, including standards for the capture of air emissions released during hydraulic fracturing; proposed effluent limit guidelines that wastewater from shale gas extraction operations must meet before discharging to a treatment plant; and issued in May 2014 a prepublication of its Advance Notice of Proposed Rulemaking regarding Toxic Substances Control Act reporting of the chemical substances and mixtures used in hydraulic fracturing. Additionally, while the Federal Bureau of Land Management (“BLM”) released a final rule setting forth disclosure requirements and other regulatory mandates for hydraulic fracturing on federal lands in March 2015, on December 29, 2017, the U.S. Department of Interior rescinded the 2015 rule that would have set new environmental limitations on hydraulic fracturing, or fracking, on public lands because it believed the 2015 rule imposed administrative burdens and compliance costs that were not justified. Moreover, from time to time, Congress has considered adopting legislation intended to provide for federal regulation of hydraulic fracturing and to require disclosure of the chemicals used in the hydraulic fracturing process. In addition to any actions by Congress, certain states in which we operate, including Pennsylvania, have adopted, and other states are considering adopting, regulations imposing or that could impose new or more stringent permitting, public disclosure or well construction requirements on hydraulic fracturing operations. States could also elect to prohibit hydraulic fracturing altogether, such as in the states of Washington, New York, Vermont and Maryland. Local governments also may seek to adopt ordinances within their jurisdiction regulating the time, place or manner of drilling activities in general or hydraulic fracturing activities in particular. If new or more stringent federal, state or local legal restrictions relating to the hydraulic fracturing process are adopted in areas where we currently or in the future plan to operate, we may incur additional, more significant, costs to comply with such requirements. As a result, we could also become subject to additional permitting requirements and experience added delays or curtailment in the pursuit of exploration, development, or production activities.

In addition, certain government reviews are underway that focus on environmental aspects of hydraulic fracturing practices. In December 2016, the EPA issued its final report on the potential of hydraulic fracturing to impact drinking water resources through water withdrawals, spills, fracturing directly into such resources, underground migration of liquids and gases, and inadequate treatment and discharge of wastewater which did not find evidence that these mechanisms have led to widespread, systematic impacts on drinking water resources. However, the EPA’s report did identify future efforts that could be taken to further understand the potential of hydraulic fracturing to impact drinking water resources, including ground water and surface water monitoring in areas with hydraulically fractured oil and gas production wells. Based on the EPA’s study, existing regulations and our practices, we do not believe our hydraulic fracturing operations are likely to impact drinking water resources, but the EPA study could result in initiatives to further regulate hydraulic fracturing under the federal Safe Drinking Water Act or other regulatory mechanisms.

We believe that our hydraulic fracturing activities follow applicable industry practices and legal requirements for groundwater protection and that our hydraulic fracturing operations have not resulted in material environmental liabilities. We do not maintain insurance policies intended to provide coverage for losses solely related to hydraulic fracturing operations; however, we believe our existing insurance policies would cover any alleged third-party bodily injury and property damage caused by hydraulic fracturing including sudden and accidental pollution coverage.

Air emissions. The Clean Air Act of 1963, as amended (the “Clean Air Act”) and comparable state laws restrict the emission of air pollutants from many sources, including compressor stations. These laws and any implementing regulations may require us to obtain pre-approval for the construction or modification of certain projects or facilities expected to produce air emissions, impose stringent air permit requirements, or use specific equipment or technologies to control emissions. We may be required to incur certain capital expenditures in the next few years for air pollution control equipment in connection with maintaining or obtaining operating permits and approvals for emissions of pollutants. For example, pursuant to then President Obama’s Strategy to Reduce Methane Emissions in August 2015, the EPA proposed new regulations that would set methane emission standards for new and modified oil and natural gas production and natural gas processing and transmission facilities. The EPA finalized these new regulations on June 3, 2016 to be effective August 2, 2016; however, on June 12, 2017, the EPA announced a proposed two-year stay on these fugitive emissions standards “while the agency reconsiders them.” On September 24, 2019, the EPA determined in a proposed rule that some of the requirements under the 2016 regulations and other prior rules are inappropriate because they affect sources that are not appropriately identified as part of the regulated source category and are unnecessary because they impose redundant requirements. As a result, the EPA proposed to rescind the inappropriate and redundant requirements while maintaining health and environmental protections from appropriately identified emission sources within the regulated source category. When and if these standards may become implemented and exactly what they will require is still not known. In another example, in October 2015, the EPA enacted a final rule that revised the National Ambient Air Quality Standard for ozone to 70 parts per billion for both the 8-hour primary and secondary standards. Also, in June 2018, the Pennsylvania Department of Environmental Protection (“PDEP”) adopted heightened permitting conditions for all newly permitted or modified natural gas compressor stations, processing plants and transmission stations constructed, modified, or operated in Pennsylvania in an effort to regulate emissions of the greenhouse gas at such sites. In furtherance of the PDEP’s mission to regulate methane emissions, in December 2019, the PDEP proposed a rule to regulate emissions of volatile organic compounds (including methane) at existing well sites and compressor stations, which, among other obligations, would require natural gas operators to perform quarterly leak detection and remediation. The proposed rule was reviewed by the Pennsylvania office of the Attorney General followed by a sixty day public comment period. Thereafter, the Pennsylvania Environmental Quality Board (the “PEQB”) adopted the proposed rulemaking and an additional public comment period on July 27, 2020. The Pennsylvania Bureau of Air Quality is currently preparing a comment and response document reflecting comments received during this additional period.

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Since this proposed rulemaking is not final, the impact on us is uncertain at this time. Compliance with these or any similar subsequently enacted regulatory initiatives could directly impact us by requiring installation of new emission controls on some of our equipment, resulting in longer permitting timelines, and significantly increasing our capital expenditures and operating costs, which could adversely impact our business.

Climate change. In 2009, the EPA published its findings that emissions of carbon dioxide, methane and other greenhouse gases (“GHGs”) present a danger to public health and the environment because emissions of such gases are, according to the EPA, contributing to warming of the Earth’s atmosphere and other climatic conditions. Based on these findings, the EPA adopted regulations under the existing Clean Air Act establishing Title V and Prevention of Significant Deterioration (“PSD”) permitting reviews for GHG emissions from certain large stationary sources that already are potential major sources of certain principal, or criteria, pollutant emissions. We could become subject to these Title V and PSD permitting reviews and be required to install “best available control technology” to limit emissions of GHGs from any new or significantly modified facilities that we may seek to construct in the future if such facilities emitted volumes of GHGs in excess of threshold permitting levels. The EPA has also adopted rules requiring the reporting of GHG emissions from specified emission sources in the United States on an annual basis, including certain oil and natural gas production facilities, which include several of our facilities. We believe that our monitoring activities and reporting are in substantial compliance with applicable obligations.

Congress has from time to time considered legislation to reduce emissions of GHGs and there have been a number of federal regulatory initiatives to address GHG emissions in recent years, such as the establishing of Title V and PSD permitting reviews for GHG emissions, as described in more detail above. Additionally, a number of state and regional efforts have emerged that are aimed at tracking and/or reducing GHG emissions by means of cap and trade programs that typically require major sources of GHG emissions, such as electric power plants, to acquire and surrender emission allowances in return for emitting those GHGs.

Although it is not possible at this time to predict how legislation or new regulations that may be adopted to address GHG emissions would impact our business, any such future federal or state laws and regulations, or international compacts could require us to incur increased operating costs, such as costs to purchase and operate emissions control systems, to acquire emission allowances or comply with new regulatory or reporting requirements. On an international level, the United States was one of almost 200 nations that, in December 2015, agreed to an international climate change agreement in Paris, France the (“Paris Agreement”) that calls for countries to set their own GHG emissions targets and be transparent about the measures each country will use to achieve its GHG emissions targets, which agreement formally entered into force on November 4, 2016. While the United States formally accepted that agreement in September 2016, on June 1, 2017, President Trump determined to withdraw the United States from the Paris Agreement. Under the terms of the Paris Agreement, the earliest possible effective date for withdrawal by the United States was November 4, 2020. However, on January 20, 2021, President Biden signed an executive order directing the United States to rejoin the Paris Agreement, a process that should take thirty days to become official. The terms on which the United States may re-enter the Paris Agreement or a separately negotiated agreement are unclear at this time. As a result of this uncertainty, it is not possible to determine how the Paris Agreement or any separately negotiated agreement could impact us.

Upon taking office in January 2021, President Biden has announced that he will demand that Congress enact legislation in the first year of his presidency that (i) establishes milestone environmental targets no later than the end of his first term in 2025, (ii) makes a significant investment in clean energy and climate research and innovation and (iii) incentivizes the rapid development of clean energy innovations across the economy, especially in communities most impacted by climate change. For example, on January 28, 2021, President Biden issued Executive orders for the purpose of combatting climate change including pausing new oil and gas leases on federal land and cutting fossil fuel subsidies. Finally, it should be noted that some scientists have concluded that increasing concentrations of GHGs in the Earth’s atmosphere may produce climate changes that have significant physical effects, such as increased frequency and severity of storms, droughts and floods and other climatic events. If any such effects were to occur, they could have an adverse effect on our financial condition and results of operations.

We believe we are in substantial compliance with currently applicable environmental laws and regulations. Although we have not experienced any material adverse effect from compliance with environmental requirements, there is no assurance that this will continue. We did not have any material capital or other non-recurring expenditures in connection with complying with environmental laws or environmental remediation matters in 2020, nor do we anticipate that such expenditures will be material in 2021. However, we regularly incur expenditures to comply with environmental laws and we anticipate those costs will continue to be incurred in the future.

Occupational health and safety. We are also subject to the requirements of the federal Occupational Safety and Health Act, as amended (“OSHA”), and comparable state laws that regulate the protection of the health and safety of employees. In addition, OSHA’s hazard communication standard requires that information be maintained about hazardous materials used or produced in our operations and that this information be provided to employees, state and local government authorities and citizens. We believe that our operations are in substantial compliance with the OSHA requirements.

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GLOSSARY OF CERTAIN DEFINED TERMS

The terms defined in this glossary are used in this report.

bbl. One stock tank barrel, or 42 U.S. gallons liquid volumes, used herein in reference to crude oil or other liquid hydrocarbons.

bcf. One billion cubic feet of gas.

bcfe. One billion cubic feet of natural gas equivalents, based on a ratio of 6 mcf for each barrel of oil or NGLs, which reflects relative energy content.

btu. One British thermal unit, an energy equivalence measure. A British thermal unit is the heat required to raise the temperature of one pound of water from 58.5 to 59.5 degrees Fahrenheit.

Development well. A well drilled within the proved area of an oil or natural gas reservoir to the depth of a stratigraphic horizon known to be productive.

Dry hole. A well found to be incapable of producing oil or natural gas in sufficient economic quantities.

Exploratory well. A well drilled to find oil or gas in an unproved area, to find a new reservoir in an existing field previously found to be productive of oil and gas in another reservoir or to extend a known reservoir.

Gross acres or gross wells. The total acres or wells, as the case may be, in which a working interest is owned.

Henry Hub price. A natural gas benchmark price quoted at settlement date average.

mbbl. One thousand barrels of crude oil or other liquid hydrocarbons.

mcf. One thousand cubic feet of gas.

mcf per day. One thousand cubic feet of gas per day.

mcfe. One thousand cubic feet of natural gas equivalents, based on a ratio of 6 mcf for each barrel of oil or NGLs, which reflects relative energy content.

mmbbl. One million barrels of crude oil or other liquid hydrocarbons.

mmbtu. One million British thermal units.

mmcf. One million cubic feet of gas.

mmcfe. One million cubic feet of gas equivalents.

NGLs. Natural gas liquids, which are naturally occurring substances found in natural gas, including ethane, butane, isobutane, propane and natural gasoline that can be collectively removed from produced natural gas, separated into these substances and sold.

Net acres or Net wells. The sum of the fractional working interests owned in gross acres or gross wells.

NYMEX. New York Mercantile Exchange.

Present Value (PV). The present value of future net cash flows, using a 10% discount rate, from estimated proved reserves, using constant prices and costs in effect on the date of the report (unless such prices or costs are subject to change pursuant to contractual provisions). The after-tax present value is the Standardized Measure.

Productive well. A well that is producing oil or gas or that is capable of production.

Proved developed non-producing reserves. Reserves that consist of (i) proved reserves from wells which have been completed and tested but are not producing due to lack of market or minor completion problems which are expected to be corrected and (ii) proved

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reserves currently behind the pipe in existing wells and which are expected to be productive due to both the well log characteristics and analogous production in the immediate vicinity of the wells.

Proved developed reserves. Proved reserves that can be expected to be recovered (i) through existing wells with existing equipment and operating methods or in which the cost of the required equipment is relatively minor compared to the cost of a new well and (ii) through installed extracting equipment and infrastructure operational at the time of the reserve estimate if the extraction is by means not involving a well.

Proved reserves. The quantities of crude oil, natural gas and NGLs that geological and engineering data can estimate with reasonable certainty to be economically producible within a reasonable time from known reservoirs under existing economic, operating and regulatory conditions prior to the time at which contracts providing the right to operate expire, unless evidence indicates that renewal is reasonably certain.

Proved undeveloped reserves. Proved reserves that are expected to be recovered from new wells on undrilled acreage, or from existing wells where a relatively major expenditure is required for recompletion.

Recompletion. The completion for production of an existing well bore in another formation from that in which the well has been previously completed.

Reserve life index. Proved reserves at a point in time divided by the then production rate (annually or quarterly).

Royalty acreage. Acreage represented by a fee mineral or royalty interest which entitles the owner to receive free and clear of all production costs a specified portion of the oil and gas produced or a specified portion of the value of such production.

Royalty interest. An interest in an oil and gas property entitling the owner to a share of oil and natural gas production free of costs of production.

Standardized Measure. The present value, discounted at 10%, of future net cash flows from estimated proved reserves after income taxes, calculated holding prices and costs constant at amounts in effect on the date of the report (unless such prices or costs are subject to change pursuant to contractual provisions) and otherwise in accordance with the Commission’s rules for inclusion of oil and gas reserve information in financial statements filed with the Commission.

tcfe. One trillion cubic feet of natural gas equivalents, with one barrel of NGLs or crude oil being equivalent to 6,000 cubic feet of natural gas.

Unproved properties. Properties with no proved reserves.

Working interest. The operating interest that gives the owner the right to drill, produce and conduct operating activities on the property and a share of production, subject to all royalties, overriding royalties and other burdens, and to all costs of exploration, development and operations, and all risks in connection therewith.

Unconventional play. A term used in the oil and gas industry to refer to a play in which the targeted reservoirs generally fall into one of three categories: (1) tight sands, (2) coal beds or (3) shales. The reservoirs tend to cover large areas and lack the readily apparent traps, seals and discrete hydrocarbon-water boundaries that typically define conventional reservoirs. These reservoirs generally require fracture stimulation or other special recovery processes in order to achieve economic flow rates.

 ITEM 1A. RISK FACTORS

While we utilize robust processes and resources to identify and manage risks, we are subject to various risks and uncertainties in the course of our business, some of which are comparable to the risks any business is exposed to and some that are unique to our company’s operations. The following summarizes the known material risks and uncertainties that may adversely affect our business, financial condition or results of operations. When considering making or maintaining an investment in our securities, you should carefully consider the risk factors included below as well as those matters referenced in the section entitled “Disclosures Regarding Forward-Looking Statements” and other information included and incorporated by reference into this Annual Report on Form 10-K. These risks are not the only risks we face. Our business could also be impacted by additional risks and uncertainties not currently known to us or that we believe not to be material based on the information we have at this time. If any of the events described below as risks actually occur, it could materially harm our business, financial condition or results of operations or impair our ability to implement our business plans or complete development activities as expected. In that case, the market price of our common stock could decline or, if severe enough, the entire value of an investment in our securities could become worthless.

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Economic Risks Related to Our Business

Volatility of natural gas, NGLs and oil prices significantly affects our cash flow and capital resources and could hamper our ability to operate economically. Natural gas, NGLs and oil prices are volatile, and a decline in prices adversely affects our profitability and financial condition. As a commodity business, the oil and gas industry is typically cyclical and we expect the volatility to continue. Natural gas prices are likely to affect us more than oil prices because approximately 65% of our proved reserves were natural gas as of December 31, 2020 and at times, natural gas prices have been low compared to our costs to produce. Natural gas, NGLs and oil prices fluctuate in response to changes in supply and demand, market uncertainty and other factors that are beyond our control. These factors include:

• events that impact domestic and foreign supply of, and demand for, natural gas, NGLs and oil, including impacts from global health pandemics and related concerns;

• weather conditions;

• technological advances affecting energy consumption, storage and energy supply;

• the production levels of non-OPEC countries, including production levels in the U.S. shale plays;

• U.S. domestic and worldwide economic conditions;

• the price and availability of, and demand for, alternative fuels;

• the effect of worldwide energy conservation efforts;

• the ability of the members of OPEC and other exporting nations that work together to agree and maintain oil price and production controls;

• military, economic and political conditions in natural gas and oil producing regions;

• the cost of exploring for, developing, producing, transporting and marketing natural gas, NGLs and oil; and

• domestic (federal, state and local) and foreign governmental regulations and taxation, including further legislation requiring, subsidizing or providing tax benefits for the use of alternative energy sources and fuels.

The long-term effects of these and other factors on the prices of natural gas, NGLs and oil prices are uncertain. Recent natural gas and NGLs commodity prices have adversely affected our business by:

• reducing our revenues, operating income and cash flows;

• reducing the amount of natural gas, NGLs and oil that we can economically produce;

• increasing the cost of obtaining capital, such as equity and debt; and

• reducing the standardized measure of discounted future net cash flows relating to natural gas, NGLs and oil.

If demand for natural gas, NGLs and oil is reduced, the prices we receive for and our ability to market and produce our natural gas, NGLs and oil may be negatively affected. Volatility in natural gas, NGLs and oil markets and the price we receive for our production is largely determined by various factors beyond our control. Production from natural gas and oil wells in some geographic areas of the United States has been or could be curtailed for considerable periods of time due to lack of local market demand and transportation and storage capacity. In the recent past, we have temporarily shut-in wells due to low commodity prices and it is possible that some of our wells may be shut-in in the future or sales terms may be less favorable than might otherwise be obtained should demand for our products decrease and/or prices decrease. Competition for markets has been vigorous and there remains uncertainty about prices purchasers will pay or the availability of sufficient storage, all of which could have a material adverse effect on our cash flows, results of operations and financial position.

Our indebtedness could limit our ability to successfully operate our business. Compared to our earnings, we have a relatively high indebtedness compared to some of our peers.  Our exploration and development program will require substantial capital resources depending on the level of drilling and the expected cost of services. Existing operations require ongoing capital expenditures and the amount of our debt could limit our financial flexibility and ability to fund our operations.

The degree to which we are indebted could have other important consequences, including the following:

• we may be required to dedicate a substantial portion of our cash flows from operations to the payment of our indebtedness, reducing the funds available for our operations;

• a portion of our borrowings is at variable rates of interest, making us vulnerable to increases in interest rates;

• our degree of leverage may make us more vulnerable to a further downturn in commodity prices or the general economy;

• we are subject to numerous financial and other restrictive covenants contained in our existing debt agreements that restrict our ability to engage in certain activities and that could limit our growth, and the breach of such covenants could materially and adversely impact our ability to continue as a going concern;

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• our debt level could limit our flexibility to maintain or grow the business and plan for, or react to, changes in our business and the industry in which we operate; and

• we may have difficulties borrowing money in the future.

The risks described above may further increase in the event we incur additional debt. In addition to those risks above, we may not be able to obtain funding on acceptable terms.

Historically, we have funded our capital expenditures through a combination of cash flow from operations, our bank credit facility and debt and equity issuances. We have also engaged in asset monetization transactions; however, we may be forced to sell assets in the event capital were not available through debt or equity markets or through additional bank debt. Future cash flows are subject to a number of variables, such as the level of production from existing wells, prices of natural gas, NGLs and oil and our success in developing and producing our reserves. If our access to capital were limited as a result of various factors, which could include a decrease in revenues due to lower natural gas, NGLs and oil prices or decreased production or deterioration of the credit and capital markets, we would have a reduced ability to fund our operations and replace our reserves resulting in further stress on our financial flexibility.  

The amount available for borrowing under our bank credit facility is subject to a borrowing base, which is determined by our lenders, taking into account our estimated proved reserves and is subject to periodic redeterminations based on pricing models determined by the lenders at such time. Declines in natural gas, NGLs and oil prices adversely impact the value of our estimated proved reserves and, in turn, the market values used by our lenders to determine our borrowing base and could result in a determination to lower our borrowing base reducing our financial flexibility.

Any failure to meet our debt obligations could harm our business, financial condition and results of operations. Our earnings and cash flow will fluctuate from year to year due to the variable nature of commodity prices. If our cash flow and capital resources are insufficient to fund our debt obligations, we may be forced to sell assets, seek additional equity or restructure our debt. Our ability to restructure our debt will depend on the condition of the capital markets and our financial condition at such time and it might not be possible to restructure our debt other than in a Chapter 11 bankruptcy. Any restructuring of debt could be at higher interest rates and may require us to comply with more onerous covenants, which could further restrict our operations and our financial flexibility. The terms of existing or future debt instruments may restrict us from adopting some of these alternatives. In addition, our cash flow and capital resources may be insufficient for payment of interest on, and principal of, our debt in the future and any failure to make scheduled payments of interest and principal on our outstanding indebtedness would likely result in a reduction of our credit rating, which could harm our ability to incur additional indebtedness on acceptable terms and it would result in the acceleration of the obligation to repay the indebtedness in full at a time when it would be unlikely we would have the ability to do so.

We receive debt ratings from the major credit rating agencies in the United States. Factors that may impact our credit ratings include debt levels, planned asset purchases or sales and near-term and long-term cash flow relative to debt balances. Liquidity, asset quality, cost structure, product mix (natural gas, NGLs and oil) and projected commodity pricing levels are also considered by the rating agencies. A ratings downgrade could adversely impact our ability to access debt markets in the future, increase the cost of future debt and could require us to post letters of credit or other forms of collateral for certain obligations. Both Moody’s and Standard and Poor’s downgraded our ratings during 2020 in conjunction with an industry-wide re-rating process as a result of the prolonged downturn in commodity prices and its effects on our financial results. In early January 2021, Moody’s upgraded our rating. We cannot provide assurance that our current ratings will remain in effect for any given period of time or that a rating will not be further downgraded.

As a result of cross-default provisions in our borrowing arrangements, we may be unable to satisfy all of our outstanding obligations in the event of a default on our part. The terms of our senior indebtedness, including our revolving credit facility, contain cross-default provisions which provide that we will be in default under such agreements in the event of certain defaults under our indentures or other loan agreements. Accordingly, should an event of default above certain thresholds occur under any of those agreements, we face the prospect of being in default under all of our debt agreements, obligated in such instance to satisfy all of our outstanding indebtedness but in all probability unable to satisfy all of our outstanding obligations simultaneously. In such an event, we might not be able to obtain alternative financing or, if we are able to obtain such financing, we might not be able to obtain it on terms acceptable to us, which would negatively affect our ability to continue our business plan, make capital expenditures and finance our operations.

We are subject to financing and interest rate exposure risks. Our business and operating results can be harmed by factors such as the availability, terms of and cost of capital, increases in interest rates or a reduction in our credit rating. These changes could cause our cost of doing business to increase, limit our ability to pursue acquisition opportunities, reduce cash flow used for drilling and place us at a competitive disadvantage. For example, at December 31, 2020, approximately 77% of our debt is at fixed interest rates with the remaining 23% subject to variable interest rates. In January 2021, we issued $600.0 million of aggregate principal amount of 8.25% senior notes due 2029 with the proceeds used to reduce our bank credit facility.

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Loans to us under our credit facility may be base rate loans or LIBOR loans.  The U.K.’s Financial Conduct Authority, which regulates LIBOR, announced that it intends to phase out LIBOR by the end of 2021. The U.S. Federal Reserve has begun publishing a Secured Overnight Funding Rate (“SOFR”), which is intended to replace U.S. dollar LIBOR plans and alternative reference rates for other currencies have also been announced. SOFR is an overnight rate instead of a term rate, making SOFR an inexact replacement for LIBOR and there is not an established process to create robust, forward-looking SOFR term rates.  At this time, we cannot predict how markets will respond to these proposed alternative rates or the effect of any changes to or the discontinuation of LIBOR. Our credit facility provides for a mechanism to address the establishment of an alternative rate of interest upon the occurrence of certain events related to the phase-out of LIBOR.  However, we have not yet pursued any changes to address this matter. If LIBOR is no longer available or if our lenders have increased costs due to changes in LIBOR, we may experience potential increases in interest rates on our variable rate debt, which could adversely impact our interest expense, results of operations and cash flows.

Disruptions or volatility in the global finance markets may lead to a contraction in credit availability impacting our ability to finance our operations. Currently, we require continued access to capital. A significant reduction in cash flows from operations or the availability of credit could materially and adversely affect our ability to conduct our planned operations. We are also exposed to some credit risk related to our bank credit facility to the extent that one or more of our lenders may be unable to provide necessary funding to us under our existing revolving line of credit if one or more of such lenders experiences liquidity problems.

Derivative transactions may limit our potential gains and involve other risks. To manage our exposure to commodity price volatility, we currently, and likely will in the future, enter into derivative arrangements, utilizing commodity derivatives (“hedges”) with respect to a portion of our future production. Hedges are generally designed to lock in prices for commodities to limit volatility and increase the predictability of cash flow. These hedging transactions can limit our potential gains if natural gas, NGLs and oil prices rise above the price established by the hedge. In addition, derivative transactions may expose us to the risk of financial loss in certain circumstances, including instances in which:

• our production is less than expected;

• the counterparties to our futures contracts fail to perform on their contract obligations; or

• an event materially impacts natural gas, NGLs or oil prices or the relationship between the hedged price index and the natural gas or oil sales prices we receive.

We cannot be certain that any derivative transaction we may enter into will adequately protect us from declines in the prices of natural gas, NGLs or oil. Furthermore, where we choose not to engage in derivative transactions in the future, we may be more adversely affected by decreases in natural gas, NGLs or oil prices than our competitors who utilize in derivative transactions. Lower natural gas, NGLs and oil prices over a longer term will also negatively impact our ability to enter into derivative contracts at prices that exceed our costs of production.

We are exposed to a risk of financial loss if a counterparty fails to perform under a derivative contract. We are unable to predict sudden changes in a counterparty’s creditworthiness or ability to perform. Even if we do accurately predict such changes, our ability to mitigate the risk may be limited depending upon market conditions. Furthermore, the bankruptcy of one or more of our hedge counterparties, or some other similar proceeding or liquidity constraint, would make it unlikely we would be able to collect all or a significant portion of amounts owed to us by the distressed entity or entities. During periods of falling commodity prices, our derivative receivable positions increase, which increases our exposure to the counterparties. If the creditworthiness of our counterparties deteriorates and results in their nonperformance, we could incur a significant loss.

We may be unable to dispose of nonstrategic assets on attractive terms and may be required to retain liabilities for certain matters. We regularly review our property base for the purpose of identifying nonstrategic assets, the disposition of which would increase capital resources available for other activities and create organizational and operational efficiencies. We also occasionally sell interests in certain core assets for the purpose of accelerating development and increasing efficiencies in other core assets. Various factors could materially affect our ability to dispose of nonstrategic assets or complete announced dispositions, including the availability of purchasers willing to purchase the nonstrategic assets at prices acceptable to us and the fact that as a result of previous such asset sales, we have few remaining nonstrategic assets which we could sell. Also, sellers in such transactions typically retain liabilities for certain matters. For example, related to the sale of our North Louisiana assets, we retained certain midstream gathering, transportation and processing obligations through 2030. The magnitude of any such retained liability or indemnification obligation may be difficult to quantify at the time of the transaction and ultimately may be material. Also, third parties are often unwilling to release us from guarantees or other credit support provided prior to the sale of the divested assets. As a result, after a sale, we may remain secondarily liable for the obligations guaranteed or supported to the extent that the buyer of the assets fails to perform these obligations.

We could experience periods of higher costs if commodity prices rise. These increases could reduce our profitability, cash flow and ability to conduct development activities as planned. Historically, our capital and operating costs have risen during periods of increasing oil, NGLs and gas prices. These cost increases result from a variety of factors beyond our control, such as increases in the cost of electricity, steel and other raw materials that we and our vendors rely upon; increased demand for labor, services and

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materials as drilling and completions activity increases; and increased taxes. Increased levels of drilling activity in the natural gas and oil industry could lead to increased costs of some drilling equipment, materials and supplies. Such costs may rise faster than increases in our revenue, thereby negatively impacting our profitability, cash flow and ability to conduct development activities as planned and on budget.

Risks Related to Our Operations

Drilling is an uncertain and costly activity. The cost of drilling, completing, and operating a well is often uncertain, and many factors can adversely affect the economics of a well. Our efforts will be uneconomical if we drill dry holes or wells that are productive but do not produce enough natural gas, NGLs and oil to be commercially viable after drilling, operating and other costs. There is no way to conclusively know in advance of drilling and testing whether any particular prospect will yield natural gas, NGLs or oil in commercially viable quantities. Furthermore, our drilling and producing operations may be curtailed, delayed, or canceled as a result of a variety of factors, including, but not limited to:

• increases in the costs, shortages or delivery delays of drilling rigs, equipment, water for hydraulic fracturing services, labor, or other services;

• unexpected operational events and drilling conditions;

• reductions in natural gas, NGLs or oil prices;

• limitations in the market for natural gas, NGLs or oil;

• adverse weather conditions and changes in weather patterns;

• facility or equipment malfunctions or operator error;

• equipment failures or accidents;

• loss of title and other title-related issues;

• pipe or cement failures and casing collapses;

• compliance with, or changes in, permitting, environmental, tax and other governmental requirements;

• environmental hazards, such as natural gas leaks, oil spills, pipeline and tank ruptures, and unauthorized discharges of toxic gases;

• lost or damaged oilfield drilling and service tools;

• unusual or unexpected geological formations;

• loss of drilling fluid circulation;

• pressure or irregularities in geological formations;

• fires;

• natural disasters;

• surface craterings and explosions;

• uncontrollable flows of oil, natural gas or well fluids;

• availability and timely issuance of required governmental permits and licenses; and

• civil unrest or protest activities.

If any of these factors were to occur, we could lose all or a part of our investment or we could fail to realize the expected benefits, either of which could materially and adversely affect our revenue and profitability. Our operations involve utilizing drilling and completion techniques as developed by us and our service providers. Risks that we face while drilling horizontal wells include, but are not limited to, the following:

• landing the wellbore in the desired drilling zone;

• drilling the wellbore to the full planned length;

• staying in the desired drilling zone while drilling horizontally through the formation;

• running casing the entire length of the wellbore; and

• being able to run tools and other equipment consistently through the horizontal wellbore.

Risks that we face while completing horizontal wells include, but are not limited to, the following:

• the ability to fracture stimulate the planned number of stages;

• the ability to run tools the entire length of the wellbore during completion operations; and

• the ability to successfully clean out the wellbore after completion of the final fracture stimulation stage.

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Our identified drilling locations are scheduled out over multiple years, making them susceptible to uncertainties that could materially alter the occurrence or timing of their drilling. Our management team has specifically identified and scheduled certain drilling locations for future multi-year drilling activities on our existing acreage. These drilling locations represent a significant part of our development strategy. Our ability to drill and develop these locations depends on a number of uncertainties, including natural gas and oil prices, the availability and cost of capital, drilling and production costs, the availability of drilling services and equipment, drilling results, lease expirations, transportation constraints, regulatory and zoning approvals and other factors. Because of these uncertain factors, we do not know if all of the numerous drilling locations we have identified will ever be drilled. In addition, unless production is established within the spacing units covering the undeveloped acres for which some of the drilling locations are obtained, the leases for such acreage will expire. These risks are greater at times and in areas where the pace of our exploration and development activity slows. As such, our actual drilling activities may materially differ from those presently identified. In addition, we will require significant capital over a prolonged period in order to pursue the development of these locations, and we may not be able to raise or generate the capital required to do so. Any drilling activities we are able to conduct on these locations may not be successful or result in our ability to add proved reserves to our overall proved reserves or may result in a downward revision of our estimated proved reserves, which could have a material adverse effect on our business and results of operations and financial condition.

Our business is subject to operating hazards that could result in substantial losses or liabilities that may not be fully covered under our insurance policies. While we have processes and procedures that we utilize to mitigate operational risks, natural gas, NGLs and oil operations are subject to many risks, including well blowouts, craterings, explosions, uncontrollable flows of oil, natural gas or well fluids (especially those that reach surface water or groundwater), fires, pipe or cement failures, pipeline ruptures or spills, vandalism, pollution, releases of toxic gases, geological formations with abnormal or unexpected pressures, adverse weather conditions or natural disasters and other environmental hazards and risks. In addition, our operations are sometimes near populated commercial or residential areas.  If any of these hazards occur, we could sustain substantial losses as a result of:

• personal injury or loss of life;

• damage to or destruction of property, natural resources and equipment;

• pollution or other environmental damage;

• investigatory and cleanup responsibilities;

• regulatory investigations and penalties or lawsuits;

• suspension of operations by regulatory authorities; and

• repairs and remediation to resume operations.

We maintain insurance against many, but not all, potential losses or liabilities arising from our operations in accordance with what we believe are customary industry practices and in amounts and at costs that we believe to be prudent and commercially practicable. Our insurance includes deductibles that must be met prior to recovery, as well as sub-limits and/or self-insurance. Additionally, our insurance is subject to exclusions and limitations. Our insurance does not cover every potential risk associated with our operations, including the potential loss of significant revenues. We can provide no assurance that our insurance coverage will adequately protect us against liability from all potential consequences, damages and losses.

We may elect not to purchase insurance in instances where we determine that the cost of available insurance is excessive relative to the risks we believe are presented. However, such determinations may prove to be incorrect.  Further, some forms of insurance may become unavailable in the future.  If we incur liability from a significant event and the damages are not covered by insurance or are in excess of policy limits, then we would have lower revenues and funds available to us for our operations, that could, in turn, have a material adverse effect on our business, financial condition and results of operations.

Additionally, we rely to a large extent on facilities owned and operated by third parties, in particular gas transportation and processing facilities, and damage to, or destruction of, those third-party facilities could affect our ability to process, transport and sell our production. To a limited extent, we maintain business interruption insurance related to two third-party processing plants and connecting lines in Pennsylvania where we are insured for potential catastrophic losses from the interruption of production caused by a covered loss of or damage to the processing plant; however, such insurance is limited and may not adequately protect us from all potential consequences, damages and losses.

Our producing properties are essentially concentrated in the Pennsylvania portion of the Appalachian Basin making us vulnerable to risks associated with operating in one geographic and political region. With the divestiture of our North Louisiana assets in third quarter 2020, essentially 100% of our total estimated proved reserves are now attributable to properties located in the Appalachian Basin, all of which are located in Pennsylvania. As a result of this significant concentration, we are particularly exposed to the impacts of regional supply and demand factors for a portion of our products. We are additionally vulnerable to processing and transportation constraints for our products. For example, a significant portion of our NGLs is transported across Pennsylvania in certain pipelines which have been and continue to be the subject of state and local scrutiny and investigations, construction and flow stoppages by regulators, litigation and various fines and penalties. We are also more heavily exposed to the extensive and evolving

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regulatory environment in Pennsylvania which may lead to delays or interruptions of construction, development and production from our wells. See also below The natural gas industry is subject to extensive regulation. Additionally, local governments in Pennsylvania are authorized to adopt and implement ordinances and impose certain restrictions regarding siting of our well sites, tanks pads and other related facilities. Approval from one or more local governmental bodies, some following a public hearing, may be required before commencing construction of our facilities which can result in delay, increased expense or in some cases, prevention of development. Moreover, new initiatives or regulations could include restrictions on our ability to conduct certain operations such as hydraulic fracturing or disposal of substances generated by our operations, including but not limited to, produced water, drilling fluids and other wastes associated with our operations. Currently there are a few states that have elected to ban hydraulic fracturing altogether, including Washington, New York, Maryland and Vermont; should Pennsylvania or the federal government were to ban hydraulic fracturing, it would preclude economic development of our Marcellus Shale reserves resulting in a severe financial consequence to us.

We use a significant amount of water in our hydraulic fracturing operations.  Our inability to locate sufficient amounts of water or dispose of or recycle water used in our operations may have a material adverse effect on our financial condition, results of operations and cash flows.  Water is an essential component of our drilling and hydraulic fracturing processes.  Limitation or restrictions on our ability to secure sufficient amounts of water (including limitations from natural causes such as drought) could impact our operations.  If we are unable to obtain water to use in our operations from local sources, we may need to obtain from new sources and transport the water to drilling sites, resulting in increased costs.  We must either dispose of or recycle water used in our operations.  Compliance with environmental and permit requirements governing the withdrawal, storage and use of surface water or groundwater may increase costs, and cause delays, interruptions or termination of our operations.

Our business depends on natural gas and oil transportation and NGLs processing facilities which are owned by others and depend on our ability to contract with those parties. Our ability to sell our natural gas, NGLs and oil production depends in part on the availability, proximity and capacity of pipeline systems and processing facilities owned by third parties and our ability to contract with those third parties. The lack of available capacity on these systems and facilities could result in the shut-in of producing wells or the delay or discontinuance of development plans for properties. See also above Our producing properties are solely concentrated in the Pennsylvania portion of the Appalachian Basin making us vulnerable to risks associated with operating in one geographical and political region. Although we have some contractual control over the transportation of our products, material changes in these business relationships, including the financial condition of the contractual counterparties, could materially affect our operations. In some cases, we do not purchase firm transportation on third-party facilities and as a result, our production transportation can be interrupted by those having firm arrangements. In other cases, we have entered into firm transportation arrangements where we are obligated to pay fees on minimum volumes regardless of actual volume throughput. If production decreases due to reduced or delayed developmental activities, taking into consideration the current commodity price environment, production related difficulties or otherwise, we may be unable to utilize all of our rights under existing firm transportation contracts, resulting in obligations to pay fees without receiving revenue from sales and such fees may be significant and may have a material adverse effect on our operations. We have also entered into long-term agreements with third parties to provide natural gas gathering and processing services. In some cases, the capacity of gathering systems and transportation pipelines may be insufficient to accommodate production from existing and new wells. Federal and state regulation of natural gas and oil production and transportation, tax and energy policies, changes in supply and demand, pipeline pressures, damage to or destruction of pipelines and general economic conditions could adversely affect our ability to produce, gather and transport natural gas, NGLs and oil. If any of these third-party pipelines or other facilities become partially or fully unavailable to transport or process our product, or if the natural gas quality specifications for a natural gas pipeline or facility change so as to restrict our ability to transport natural gas on those pipelines or facilities, our revenues could be adversely affected.

The disruption of third-party facilities due to maintenance, mechanical failures, accidents, weather and/or other reasons could negatively impact our ability to market and deliver our products. In particular, the disruption of certain third-party natural gas processing facilities in our core operating area in southwest Pennsylvania could materially affect our ability to market and deliver natural gas production in that area especially if such disruption were to last for more than a short duration which could result in the necessity to curtail a significant amount of our production. We have no control over when or if such facilities are restored and generally have no control over what prices will be charged. A total shut-in of production would materially affect us due to a lack of cash flow, and if a substantial portion of the production volume is hedged at lower than market prices, our obligation to the counterparty under those financial hedges would have to be paid from borrowings thus further adversely affecting our financial condition.

Risks Related to The Industry in which We Operate

The natural gas industry is subject to extensive regulation. Natural gas, NGLs, condensate and other hydrocarbons, as well as our operations to produce these products, are subject to extensive laws, regulations, and ordinances at the federal, state and local level.  Further, new legislation, proposed rulemaking and ordinance amendments affecting the industry are under constant review for more expansive requirements and rules on our products and operations.  Compliance with new and expanding laws from numerous governmental departments and agencies often increases our cost of doing business, delays our operations and decreases our

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profitability. Certain potential legislation, such as a ban on hydraulic fracturing, could even preclude our ability to economically develop our reserves.

Matters subject to laws and regulations affecting our business include, but are not limited to:  the amount and types of substances and material that may be released into the environment, including GHGs; responding to unexpected releases of regulated substances or materials to the environment; the sourcing and disposal of water used in the drilling and completions process; permits, performance rules and reporting obligations concerning drilling, completion and production operations; threatened or endangered species and waterway protection efforts; and climate related initiatives.

Environmental regulations and pollution liability could expose us to significant costs and penalties.  We may incur significant costs and liabilities in complying with existing or future environmental laws, regulations and enforcement policies or initiatives.  Some of these environmental laws and regulations may impose strict, joint and several liability regardless of fault or knowledge, which could subject us to liability for conduct that was lawful at the time it occurred, or conditions caused by prior owners or operators or which relate to third party sites where we have taken materials for recycling or disposal.  Pennsylvania law also imposes criminal liability for certain releases of substances, regardless of fault or intent.  Failure to comply with these laws and regulations may result in the occurrence of delays, cancellations or restrictions in permitting or performance of our projects or other operations and subject us to administrative, civil and/or criminal penalties, corrective actions and orders enjoining some or all of our operations.  Our operations may be impacted by new and amended laws and regulations and reinterpretations of existing laws and regulations or increased government enforcement relating to environmental laws.  For example, properly handled drilling fluids and produced water are currently exempt from regulation as hazardous waste under RCRA, and instead are regulated under RCRA’s non-hazardous waste provisions.  It is possible that the EPA may in the future propose rulemaking that designates such wastes as hazardous rather than non-hazardous, and a similar designation may be made at the state level.  Should this occur at the federal and/or state level it could result in significant costs to attain and maintain compliance.  

We may also be exposed to liability and costs for handling of hydrocarbons, air emissions and wastewater or other fluid discharges related to our operations and waste disposal practices.  Spills or other unauthorized releases of hazardous or regulated substances by us, our contractors or resulting from our operations could expose us to material losses, expenditures and liabilities, civil and criminal, under environmental laws and regulation, and we are currently and have in the past been involved in such investigations, remediation and monitoring activities.  For example, in 2020, the Pennsylvania Attorney General filed misdemeanor criminal charges against us for certain releases and spills that we had reported and remediated under the direction of the PDEP. While we have resolved these charges, the Pennsylvania Attorney General has publicly announced additional investigations and charges generally related to our industry in Pennsylvania. Additionally, neighboring landowners and other third parties may assert claims or file lawsuits against us for personal injury and/or property damage allegedly caused by the release of substances into the environment, with or without evidence of an impact from our operations, all of which could also result in significant litigation or settlement costs as well as reputational harm.

Laws and regulations pertaining to threatened and endangered species and protection of waterways could delay or restrict our operations and cause us to incur substantial costs. Various federal and state statutes prohibit actions or operations that adversely affect endangered or threatened species and their habitats.  These statutes include the federal Endangered Species Act of 1973, the Migratory Bird Treaty Act, the CWA, CERCLA and similar state programs.  The U.S. Fish and Wildlife Service (“FWS”) may designate critical habitat and suitable habitat areas that it believes are necessary for survival of threatened or endangered species.  A critical habitat or suitable habitat designation could result in material restrictions to land use and delay, restrict or even prevent our operations.  While none of the species listed by FWS as threatened or endangered materially affect our operations at the present time, the future designation of previously unprotected species as threatened or endangered in areas where we conduct our operations could cause us to incur increased costs arising from species protection measures and/or limit or prevent our ability to operate which could have an adverse effect on our ability to develop and produce reserves.

Additionally, operations may be impacted by the existence of wetlands or other environmentally sensitive areas based upon the scope of the CWA and its protection of waters of the United States.  While the revision to the definition of “waters of the United States” in the EPA’s final rule on June 22, 2020 narrowed the scope of the CWA, there have been legal challenges to the rule which may result in expansion of the CWA by the EPA or state agencies taking a more expansive view of their respective enforcement roles.  Also, the EPA may change its rules in the future. To the extent that legal challenges or any further rulemaking expands the CWA’s jurisdiction we could incur increased costs and restrictions, and/or delays or cancellations in permitting or projects, which could result in significant costs and liabilities or financial losses.

Climate related regulations and initiatives could expose us to significant costs and restrictions on operations.  There is an ongoing public debate as to the extent to which our climate is changing, the potential causes of climate change and its potential impacts. As part of that debate, there is also general belief that increased levels of GHGs, including carbon dioxide and methane, have contributed to and continue to contribute to climate change which has led to numerous regulatory, political, litigation and financial risks associated with the production of fossil fuels and emissions of GHGs.

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Federal and state governments have from time to time considered legislation and regulations to reduce GHG emissions including but not limited to the implementation of GHG monitoring and reporting for the natural gas industry which includes certain of our operations. The EPA has sought to achieve these reductions under the Clean Air Act and New Source Performance Standards aimed at volatile organic compounds (“VOCs”) including methane emissions from oil and natural gas sources. In Pennsylvania, regulators have implemented operating permits and restrictions on emissions for well site operations, compressors, processing plants and other downstream facilities that directly impact our operations. The PDEP continues to pursue new and additional regulations to limit VOCs from existing sources for the oil and gas industry. There have also been a number of state and regional efforts that have emerged that seek to track and reduce GHG emissions by means of cap and trade programs where emitters would be required to acquire and surrender emission allowances in return for emitting GHGs. In September 2020, the Pennsylvania Environmental Quality Board (the “PEQB”) approved a draft resolution to enter the Regional Greenhouse Gas Initiative (“RGGI”), a cooperative effort among the states of Connecticut, Delaware, Maine, Maryland, Massachusetts, New Hampshire, New Jersey, New York, Rhode Island and Vermont to cap and reduce power sector CO₂ emissions from fossil-fuel-fired electric power plants. The PEQB accepted public comments on joining RGGI through January 14, 2021. In addition to RGGI, the PDEP is evaluating other regulations to achieve the emissions reductions. We have initiated our own internal goals to reduce GHG emissions from our operations, for example, setting a goal of net zero direct emissions by 2025; however, there are a variety of factors that may prevent us from meeting that goal including but not limited to operational malfunctions, availability of equipment and services, engineering results, capital constraints and availability and success of carbon offsetting initiatives.

The outcome of federal, state and regional actions to address global climate change could result in a variety of new laws and regulations to control or restrict emissions including taxes or other charges to deter or restrict emissions of GHGs. This may also depend upon political outcomes as there have been certain candidates seeking election to various state and federal offices, including President Biden, who have made pledges to restrict GHG emissions, ban hydraulic fracturing of oil and natural gas wells and ban new leases for production of oil and natural gas on federal lands. Our development is critically dependent upon the use of hydraulic fracturing and we cannot economically develop any of our reserves without using such technology (which we believe has been safely conducted for many decades) and a ban of such technology would result in material economic harm to us.  

There are also increasing litigation risks associated with climate change concerns as a number of cities and local governments have initiated lawsuits against fossil fuel producer companies in state and federal court and have asserted claims for public nuisance and seeking damages for climate change impacts to roadways and infrastructure. Such lawsuits have also alleged that fossil fuel producers have been aware of the adverse effects of climate change and defrauded their investors by failing to adequately disclose those impacts.  

Financial risks for fossil fuel energy companies, including natural gas producers, are also on the rise as stockholders and bondholders concerned about the potential effects of fossil fuels on climate change may elect to shift some or all of their investments away from fossil fuel based energy. Institutional lenders who provide financing to fossil fuel energy companies also have been under pressure from activists and are the subject of lobbying to not provide funding for fossil fuel production. Some of these institutional lenders may elect not to provide funding for us which could result in restriction, delay or cancellation of drilling programs or development or production activities or impair our ability to operate economically operate.  

At this time, we cannot predict the potential impact of such laws, regulations, regional or international initiatives or compacts, litigation, financing restrictions due to climate concerns on our future consolidated financial condition, results of operations or cash flows; however, such impacts could be material and have material negative consequences to our business.

Information concerning our reserves and future net cash flow are estimates and are not certain to match our results. There are numerous uncertainties inherent in estimating quantities of proved natural gas and oil reserves and their values, including many factors beyond our control. Estimates of proved reserves depend on many assumptions relating to current and future economic conditions and commodity prices as well as the projected productivity of our wells. To the extent we experience a sustained period of reduced commodity prices, there is a risk that a portion of our proved reserves could be deemed uneconomic and no longer be classified as proved. Although we utilize robust processes and procedures to evaluate and estimate our reserves, they are estimates and the actual production, revenues and costs to develop our estimated reserves will vary from estimates and these variances could be material and/or negative.

Reserve estimation is a subjective process that involves estimating volumes to be recovered from underground accumulations of natural gas and oil that cannot be directly measured. As a result, different petroleum engineers, each using industry-accepted geologic and engineering practices and scientific methods, may calculate different estimates of reserves and future net cash flows based on the same available data. Because of the subjective application of engineering principles to natural gas, NGLs and oil reserve estimates, each of the following items may differ materially from the amounts or other factors estimated:

• the amount and timing of natural gas, NGLs and oil production;

• the revenues and costs associated with that production;

• the amount and timing of future development expenditures; and

• future commodity prices.

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The discounted future net cash flows from our proved reserves included in this report are not the same as the market value of the reserves attributable to our properties. As required by United States generally accepted accounting principles (“U.S. GAAP”), the estimated discounted future net revenues from our proved reserves are based on a twelve month average price (first day of the month) while cost estimates are based on current year-end economic conditions. Actual future prices and costs may be materially higher or lower. In addition, the ten percent discount factor that is required to be used to calculate discounted future net cash flows for reporting purposes under U.S. GAAP is not necessarily the most appropriate discount factor based on the cost of capital, which varies from time to time, and risks associated with our business and the oil and gas industry in general.

We may face various risks associated with the long-term trend toward increased activism against oil and gas exploration and development activities. Opposition toward oil and gas drilling and development activity has been growing over time. Companies in the oil and gas industry are often the target of activist efforts to delay or prevent oil and gas development from both individuals and non-governmental organizations who use safety, environmental compliance and business practices to support their opposition to oil and gas drilling. Anti-development activists are working to, among other things, reduce access to federal and state government lands and delay or cancel certain projects such as the development of oil and gas drilling, as well as the pipeline infrastructure needed to transport and process oil and gas production. For example, environmental activists continue to advocate for increased regulations or bans on shale drilling and hydraulic fracturing in the United States, even in jurisdictions like Pennsylvania that are among the most stringent in their regulation of the industry. Such activist efforts could result in the following:

• delay or denial of drilling permits;

• shortening of lease terms and reduction in lease size;

• restrictions on or prevention of installation or operation of production, gathering or processing facilities;

• restrictions on or prevention of the use of certain operating practices, such as hydraulic fracturing, or the disposal of related materials, such as hydraulic fracturing fluids and produced water;

• increased severance and/or other taxes;

• cyber-attacks;

• legal challenges or lawsuits;

• negative publicity about our business or the oil and gas industry in general;

• increased costs of doing business;

• reduction in demand for our products; and

• other adverse effects on our ability to develop our properties and expand production.

We may need to incur significant costs associated with responding to these initiatives and such actions may materially adversely affect our financial results. Complying with any resulting additional legal or regulatory requirements that are substantial or prevent our activity could have a material adverse effect on our business, financial condition, cash flows and results of operations.

Conservation measures and technological advances could reduce demand for oil and natural gas. Fuel conservation measures, alternative fuel requirements, governmental requirements for renewable energy resources, increasing consumer demand for alternatives to oil and natural gas, technological advances in fuel economy and energy generation or storage devices (such as battery technology) could reduce demand for oil and natural gas. The impact of the changing demand for oil and natural gas services and products may have a material adverse effect on our business, financial condition, results of operations and cash flows.

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Legal, Tax and Regulatory Risks

Certain federal income tax deductions currently available with respect to natural gas and oil exploration and development may be eliminated or postponed and additional federal or state taxes or fees on natural gas extraction may be imposed. Legislation has been previously proposed that would, if enacted into law, make significant changes to U.S. federal income tax laws, including the elimination of certain U.S. federal income tax benefits currently available to oil and gas exploration and production companies. Such changes include, but are not limited to, (i) the repeal of percentage depletion allowance for oil and natural gas properties; (ii) the elimination of current deductions for intangible drilling and development costs and; (iii) an extension of the amortization period for certain geological and geophysical expenditures. However, it is unclear whether any such changes will be enacted and if enacted, how soon any such changes would be effective. Additionally, legislation could be enacted that imposes new fees or increases the taxes on oil and natural gas extraction, which could result in increased operating costs and/or reduced consumer demand for our products. The passage of any such legislation or any other similar change in U.S. federal income tax law could increase costs or eliminate or postpone certain tax deductions that are currently available with respect to natural gas and oil exploration and development and any such changes could have an adverse effect on our financial condition, results of operations and cash flows. As of December 31, 2020, we had a tax basis of $623.9 million related to prior year capitalized intangible drilling costs, which will be amortized over the next five years.

In February 2012, the state legislature of Pennsylvania passed legislation creating a tax referred to as the natural gas impact fee applicable to production in Pennsylvania, where all of our acreage is located. The legislation imposes an annual fee on natural gas and oil operators for each well drilled for a period of fifteen years. Much like a severance tax, the fee is on a sliding scale set by the Pennsylvania Public Utility Commission and is based on two factors: changes in the Consumer Price Index and the average NYMEX natural gas prices on the last day of each month. The impact fee increases the financial burden on our operations in the Marcellus Shale. There can be no assurance that the impact fee will remain as currently structured or that additional taxes will not be imposed. From time to time, the Pennsylvania Governor and various Pennsylvania state lawmakers have proposed legislation to enact a severance tax in substitution for, or as an addition to, the impact fee already in place. For example, in late January 2021, the Pennsylvania Governor announced he was re-proposing legislation to enact a severance tax to fund COVID-19 relief measures. The structure of and ultimate effect of any additional tax burden cannot be estimated at this time but could be material.

We may be limited in our use of net operating losses and tax credits and deductibility of business interest expense. As noted in the financial statements included with this Form 10-K, we have substantial net operating losses (“NOLs”). Utilization of these NOLs and the deductibility of business interest expense depends on many factors, including the company’s future taxable income. Our ability to utilize our deferred tax assets is dependent on the amount of future pre-tax income that we are able to generate through our operations or the sale of assets.  As discussed elsewhere, future asset sales may or may not be completed and depending on commodity prices, we may not generate taxable income. If management concludes that it is more likely than not that some or all of the benefit from the deferred tax asset will not be realized, a valuation allowance will be recognized in the period that this conclusion is reached. In addition, limitations may exist upon use of these NOLs in the event that a change in control occurs. In either case, the impact of the valuation allowance would be negative to our financial statements.

Legal proceedings brought against us could result in substantial liabilities and materially and adversely impact our financial condition. Like many oil and gas companies, we are involved in various legal proceedings, including threatened claims, such as title, royalty, and contractual disputes. The cost to settle legal proceedings (asserted or unasserted) or satisfy any resulting judgment against us in such proceedings could result in a substantial liability or the loss of interests, which could materially and adversely impact our cash flows, operating results and financial condition. Judgments and estimates to determine accruals or range of losses related to legal proceedings could change from one period to the next, and such changes could be material. Current accruals may be insufficient to satisfy any such judgments. Legal proceedings could also result in negative publicity about Range. In addition, legal proceedings distract management and other personnel from their primary responsibilities. At this time, based on the information available to management, there are no pending claims or litigation which appear likely to result in a material financial impact.  However, management’s assessment of pending claims and litigation could be inaccurate and subsequent events could result in material liabilities from such claims or litigation.

Our success depends on key members of our management and our ability to attract and retain experienced technical and other professional personnel. None of our senior management team nor any of the other officers are subject to an employment agreement and therefore retaining them as employees is less certain than if they were parties to an employment agreement. The loss of one or more of these individuals, particularly regarding our CEO, CFO and COO, could have a material adverse effect on our business. Further, the loss of key technical professionals with extensive experience in our core operating area could be difficult to replace if they were to leave and the loss of such employees could adversely affect the costs of drilling, completing and operating our wells.

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Risks Related to Our Common Stock

Common stockholders will be diluted if additional shares are issued. In order to align interests and encourage ownership, we issue restricted stock and performance share units to our employees and directors as part of their compensation. In addition, we may issue additional shares of common stock, additional subordinated notes or other securities or debt convertible into common stock to extend maturities or fund capital expenditures, including acquisitions.   The issuance of additional shares of common stock results in dilution of the interests of existing stockholders.  One way to reverse the effects of dilution is by the acquisition of our stock.  However, our ability to repurchase securities for cash is limited by our bank credit facility.

Dividend limitations. Limits on the payment of dividends and other restricted payments (as defined in our bank credit facility), are imposed under our bank credit facility. These limitations may, in certain circumstances, limit or prevent the payment of dividends. In January 2020, we announced that the board of directors suspended the dividend on our common stock and there is no assurance that the board of directors will reinstate a dividend in the future.

Our stock price may be volatile and stockholders may not be able to resell shares of our common stock at or above the price they paid. The price of our common stock fluctuates significantly, which may result in losses for investors. The market price of our common stock has been volatile. From January 1, 2018 to December 31, 2020 the price of our common stock reported by the New York Stock Exchange ranged from a low of $1.64 per share to a high of $18.59 per share. From January 1, 2021 to February 19, 2021, our common stock ranged from a low of $6.78 per share to a high of $11.59 per share. We expect our stock price to continue to be subject to volatility as a result of a variety of factors, including factors beyond our control. These factors include:

• most significantly, changes in natural gas, NGLs and oil prices;

• variations in drilling, recompletions, acquisitions and operating results;

• changes in governmental regulation and/or taxation;

• changes in financial estimates by securities analysts;

• changes in market valuations of comparable companies;

• expectations regarding our capital program, including any determination by our board of directors regarding repurchasing stock or paying dividends;

• changes in key personnel; or

• future sales of additional stock and changes in our capital structure.

We may fail to meet expectations of our stockholders or of securities analysts at some time in the future and our stock price could decline as a result.

We have identified a material weakness in our internal control over financial reporting, which if not remediated, could adversely affect our business.

Our internal control over financial reporting may not prevent or detect misstatements because of its inherent limitations, including the possibility of human error, the circumvention or overriding of controls or fraud. Even effective internal controls can provide only reasonable assurance with respect to the preparation and fair presentation of financial statements. If we fail to maintain the adequacy of our internal controls, including any failure to implement required new or improved controls or if we experience difficulties in their implementation, our business and financial results could be harmed and we could fail to meet our financial reporting obligations.  As part of preparing our 2020 consolidated financial statements, we identified an error in management’s conclusions regarding the realizability of deferred tax assets resulting from changes to the tax law under the Coronavirus Aid, Relief and Economic Security Act (also known as the CARES Act) which resulted an error in our previously reported 2020 quarterly statements of operations.  See Part II-Item 8. Financial Statements and Supplementary Data, Note 18 for further information.  If the steps we take do not correct the material weakness in a timely manner, we may be unable to conclude in the future that we maintain effective internal control over financial reporting.

General Risk Factors

Our business could be negatively affected by security threats, including cybersecurity threats and other disruptions. As a natural gas and oil producer, we face various security threats, including:

• cybersecurity threats to gain unauthorized access to sensitive information or to render data or computer systems unusable;

• threats to the security or operations at our physical facilities and infrastructure or third-party facilities and infrastructure, such as processing plants and pipelines; or

• threats from terrorist acts.

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Computers and telecommunication systems are an integral part of our business and are used to support our exploration, development and production activities and our key accounting and financial reporting functions. We use these systems to analyze and store financial and operating data and to communicate internally and with outside business partners. Cyber-attacks could compromise our computer and telecommunications systems and result in disruptions to our business operations or the loss of our data and proprietary information. In addition, computers control oil and gas production, processing equipment, and distribution systems globally and are necessary to deliver our production to market. A cyber-attack against these operating systems, or the networks and infrastructure on which they rely, could damage critical production, distribution and/or storage assets, delay or prevent delivery to markets, cause accidental discharge and/or make it difficult or impossible to accurately account for production and settle transactions. A cyber-attack on a vendor or a service provider could result in supply chain disruptions, which could delay or halt development projects. A cyber-attack on our accounting or human resources systems could expose us to liability if personal information is obtained.

Security threats have subjected our operations to increased risks that could have a material adverse effect on our business. In particular, our implementation of various procedures and controls to monitor and mitigate security threats and to increase security for our personnel, information, facilities and infrastructure may result in increased capital and operating costs. Moreover, there can be no assurance that such procedures and controls will be sufficient to prevent security breaches from occurring. If any of these security breaches were to occur, they could lead to harm to our employees or losses of sensitive information, losses of critical infrastructure or capabilities essential to our operations and could have a material adverse effect on our reputation, financial position, and results of operations or cash flows. Cyber-attacks in particular are becoming more sophisticated and include, but are not limited to, malicious software, phishing, ransomware, attempts to gain unauthorized access to data, and other electronic security breaches that could lead to disruptions in critical systems, unauthorized release of confidential or otherwise protected information, and corruption of data. These events could damage our reputation and lead to financial losses from unauthorized disbursement of funds, remedial actions, loss of business and/or potential liability. Additionally, the continuing and evolving threat of cybersecurity attacks has resulted in evolving legal and compliance matters, including increased regulatory focus on prevention, which could require us to expend significant additional resources to meet such requirements. While we utilize extensive processes and procedures that we deem appropriate to counter cybersecurity risks and to date have not suffered any material losses relating to such attacks, there can be no assurance that we will not suffer such losses in the future.

Terrorist attacks and the threat of terrorist attacks, whether domestic or foreign attacks, as well as military or other actions taken in response to these acts, could cause instability in the global financial and energy markets. Continued hostilities in the Middle East and the occurrence or threat of terrorist attacks in the United States or other countries could adversely affect the global economy in unpredictable ways, including the disruption of energy supplies and markets, increased volatility in commodity prices or the possibility that the infrastructure on which we rely could be a direct target or an indirect casualty of an act of terrorism and, in turn, could materially and adversely affect our business and results of operations.

We face risks related to the novel coronavirus (COVID-19) which could significantly disrupt our operations. While to date we have not experienced a material disruption to our business as a result of the COVID-19 pandemic, our business may be adversely impacted by the effects of COVID-19. Our operations, as well as the operations of our business counterparties, are subject to varying governmental responses to COVID-19 such as business shutdowns, stay-at-home directives, travel restrictions and other travel or health-related restrictions, as well as by potential absenteeism, quarantines, self-isolations, office and facility closures, delays on deliveries and disruptions to ports, manufacturing facilities, pipelines, refineries and other facilities integral to our business. In addition, our customers may delay or reduce purchases from us due to the COVID-19 impacts on the level of demand.

In addition, COVID-19 has affected demand for oil and gas thus adversely affecting commodity prices and may, over the longer term, adversely affect the economic and financial markets resulting in a significant economic downturn. Moreover, to the extent the COVID-19 pandemic or any worsening of the global business and economic environment as a result adversely affects our business and financial results, it may also have the effect of heightening or exacerbating many of the other risks described in Item 1A of this Annual Report on Form 10-K.

At this time, we are unable to predict the full impact that COVID-19 will have due to various uncertainties and future developments, including the ultimate spread of the virus, the severity of the disease, the duration of the outbreak, the occurrence of other pandemics, the imposition of related public health measures and travel and business restrictions or other actions that may be taken by governmental authorities in an attempt to contain or treat the virus, all of which could have a material adverse effect on our operations, cash flows, financial condition and have a negative impact on our stock price.

ITEM  1B. UNRESOLVED STAFF COMMENTS

None.

ITEM 3. LEGAL PROCEEDINGS

We are the subject of, or party to, a number of pending or threatened legal actions and claims arising in the ordinary course of

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our business. While many of these matters involve inherent uncertainty, we believe that the amount of the liability, if any, ultimately incurred with respect to proceedings or claims will not have a material adverse effect on our consolidated financial position as a whole or on our liquidity, capital resources or future annual results of operations. We will continue to evaluate our litigation quarterly and will establish and adjust any litigation reserves as appropriate to reflect our assessment of the then-current status of litigation.

Environmental Proceedings

Our subsidiary, Range Resources – Appalachia, LLC, was notified by the PDEP that it intends to assess a civil penalty under the Clean Streams Law and the 2012 Oil and Gas Act in connection with one well in Lycoming County and ordered us to conduct certain remedial work and monitoring to prevent methane and other substances from allegedly escaping the gas well into the surrounding environment including into soil, groundwater, streams and other surrounding water sources. PDEP initially issued an order specifying its demands to the subsidiary on May 11, 2015. We appealed the order and the appeal was subsequently settled and discontinued whereupon we agreed to conduct certain, limited remedial work at the one well and continue monitoring water sources in the area and PDEP did not assess any fines at that time. Thereafter, on January 13, 2020, PDEP issued a new order regarding the same one well in Lycoming County which set forth similar allegations and demands as set forth above.  This new order was issued despite considerable data and evidence presented to PDEP over the course of the investigation, that this one well has not been nor is currently the source of methane in the environment nor any water supplies, but rather the methane existed in the environment before the commencement of our operations. We appealed the January 2020 order and intend to vigorously defend against the allegations asserted by PDEP; however, a resolution of this matter may nonetheless result in monetary sanctions more than $250,000.

ITEM  4. MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market for Common Stock

Our common stock is listed on the New York Stock Exchange (“NYSE”) under the symbol “RRC”. During 2020, trading volume averaged approximately 9.3 million shares per day.

Holders of Record

Pursuant to the records of our transfer agent, as of February 19, 2021, there were approximately 944 holders of record of our common stock.

Dividends

The payment of dividends is subject to declaration by the board of directors and depends on earnings, capital expenditures and various other factors. The board of directors declared quarterly dividends of $0.02 per common share for each of the four quarters of 2019 and 2018. The bank credit facility allows for the payment of common and preferred dividends, subject to certain limitations. In January 2020, we announced that the board of directors suspended the dividend on our common stock. The determination of the amount of future dividends, if any, to be declared and paid is at the sole discretion of our board of directors and will depend upon, among other things, our earnings, financial condition, capital requirements, levels of indebtedness and other considerations our board of directors deems relevant. For more information, see Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations.

Equity Compensation Plan Information

The information required by this item is incorporated herein by reference to the 2021 Proxy Statement, which will be filed with the SEC not later than 120 days subsequent to December 31, 2020.

Purchases of Equity Securities by the Issuer and Affiliated Purchasers

Purchases of our common stock are as follows:

	Three Months Ended December 31, 2020
Period	Total Number of Shares Purchased		Average Price Paid Per Share	Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs		Approximate Dollar Amount of Shares that May Yet Be Purchased Under Plans or Programs (a)
October 2020	—	$	—	—	$	70,099,593
November 2020	—	$	—	—	$	70,099,593
December 2020	—	$	—	—	$	70,099,593
	—			—

^(a) In October 2019, our board of directors authorized a $100 million common stock repurchase program. As of December 31, 2020, we have repurchased 10.0 million shares of common stock at a cost of approximately $30.0 million, excluding fees and commissions. As of December 31, 2020, these shares are held as treasury stock.

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Stockholder Return Performance Presentation*

The following graph is included in accordance with the SEC’s executive compensation disclosure rules. This historic stock price performance is not necessarily indicative of future stock performance. The graph compares the change in the cumulative total return of Range’s common stock, the ISE Revere Natural Gas Index, the Dow Jones U.S. Exploration and Production Index, the S&P 400 Mid Cap Index and the S&P Small Cap 600 Index for the five years ended December 31, 2020. The graph assumes that $100 was invested in the Company’s common stock and each index on December 31, 2015 and that dividends were reinvested.

	2015		2016		2017		2018		2019		2020
Range Resources Corporation	$	100	$	140	$	70	$	39	$	20	$	28
S&P Mid Cap 400 Index		100		121		140		125		157		179
S&P Small Cap 600 Index		100		126		143		131		161		179
Dow Jones U.S. Exploration & Production		100		124		126		104		116		77
ISE Revere Natural Gas Index		100		120		107		70		59		44

*The performance graph and the information contained in this section is not “soliciting material,” is being “furnished” not “filed” with the SEC and is not to be incorporated by reference into any of our filings under the Securities Act or the Exchange Act whether made before or after the date hereof and irrespective of any general incorporation language contained in such filing.

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ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion is intended to assist you in understanding our business and results of operations together with our present financial condition and should be read in conjunction with the information under Item 8. Financial Statements and Supplementary Data and other financial information found elsewhere in this Form 10-K. See also matters referenced in the foregoing pages under “Disclosures Regarding Forward-Looking Statements.”

The following tables and discussions set forth key operating and financial data for the years ended December 31, 2020 and 2019. For similar discussions of the year ended December 31, 2019 compared to December 31, 2018 results, refer to Item 7. “Managements’ Discussion and Analysis of Financial Condition and Results of Operations” under Part II of our annual report on Form 10-K for the year ended December 31, 2019, which was filed with the SEC on February 27, 2020.

Overview of Our Business

We are an independent natural gas, natural gas liquids (“NGLs,”) crude oil and condensate company engaged in the exploration, development and acquisition of natural gas and crude oil properties located in the Appalachian region of the United States. We operate in one segment and have a single company-wide management team that administers all properties as a whole rather than by discrete operating segments. We track only basic operational data by area. We do not maintain complete separate financial statements information by area. We measure financial performance as a single enterprise and not on an area-by-area basis.

Our overarching business objective is to build stockholder value through returns focused development of natural gas properties. Our strategy to achieve our business objective is to generate consistent cash flow from reserves and production through internally generated drilling projects occasionally coupled with complementary acquisitions and divestitures of non-core or, at times, core assets. Currently, our investment portfolio is focused on high quality natural gas assets in the state of Pennsylvania. Our revenues, profitability and future growth depend substantially on prevailing prices for natural gas, NGLs, crude oil and condensate and on our ability to economically find, develop, acquire and produce natural gas, NGLs and oil reserves.

Commodity prices have been and are expected to remain volatile. We believe we are well-positioned to manage the challenges presented in such a volatile pricing environment by:

• exercising discipline in our capital program as we target funding our capital spending within operating cash flows and, if required, with borrowings under our bank credit facility;

• continuing to optimize drilling, completion and operational efficiencies;

• remaining focused on improving our cost structure;

• continuing to pursue asset sales to reduce debt;

• continuing to manage price risk through the hedging of our production; and

• continuing to manage our balance sheet.

Prices for natural gas, NGLs, crude oil and condensate fluctuate widely and affect:

• our revenues, profitability and cash flow;

• the quantity of natural gas, NGLs and oil that we can economically produce;

• the quantity of natural gas, NGLs and oil shown as proved reserves;

• the amount of cash flow available to us for capital expenditures; and

• our ability to borrow and raise additional capital.

We prepare our financial statements in conformity with U.S. GAAP, which require us to make estimates and assumptions that affect our reported results of operations and the amount of our reported assets, liabilities and proved natural gas, NGLs and oil reserves. We use the successful efforts method of accounting for our natural gas, NGLs and oil activities. Our corporate headquarters is located in Fort Worth, Texas.

Key 2020 highlights include:

Simplified and concentrated our portfolio

• In third quarter 2020, we sold our North Louisiana assets for cash proceeds of $245.0 million (before normal closing adjustments) and we recognized a pretax loss of $9.5 million, after closing adjustments.

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• In first quarter 2020, we completed the sale of our shallow legacy assets in Northwest Pennsylvania for proceeds of $1.0 million and recognized a pre-tax gain of $122.5 million primarily due to the elimination of the asset retirement obligation associated with these properties.

Strengthened our balance sheet and liquidity

• In first and third quarter 2020, we issued an aggregate principal amount of $850.0 million in new senior notes due 2026 and used the proceeds to redeem various senior and senior subordinated notes due 2021, 2022 and 2023. In addition, throughout the year we purchased in the open market, for a gain, various senior and senior subordinated notes due 2021, 2022, 2023. The impact of these transactions significantly changed our near term maturities. Also, in early January 2021, we issued an additional aggregate principal amount of $600.0 million in new senior notes due 2029 and used those proceeds to reduce outstanding balances on our bank credit facility. The table below details the changes in our outstanding debt principal balances from December 31, 2019 to December 31, 2020 (in thousands):

	December 31, 2019		Change			December 31, 2020
Bank debt	$	477,000	$	225,000		$	702,000
Senior notes
5.75% senior notes due 2021		374,139		(348,643	)		25,496
5.00% senior notes due 2022		511,886		(342,297	)		169,589
5.875% senior notes due 2022		297,617		(249,089	)		48,528
5.00% senior notes due 2023		741,531		(209,196	)		532,335
4.875% senior notes due 2025		750,000		—			750,000
9.25% senior notes due 2026		—		850,000			850,000
Other senior notes		590		(100	)		490
Total senior notes		2,675,763		(299,325	)		2,376,438
Senior subordinated notes
5.75% senior subordinated notes due 2021		22,214		(2,318	)		19,896
5.00% senior subordinated notes due 2022		19,054		(9,324	)		9,730
5.00% senior subordinated notes due 2023		7,712		—			7,712
Total senior subordinated notes		48,980		(11,642	)		37,338
Total debt	$	3,201,743	$	(85,967	)	$	3,115,776

• Our bank’s committed borrowing capacity remained at $2.4 billion after completing our semi-annual borrowing base redetermination in September 2020.

Financial and operational results

• Continued to deliver our strong operational execution along with focusing on cost control that will improve our cost structure for current and future operations while emphasizing safety and protection of the environment.

• Focused on capital efficiencies, which resulted in lower well costs and drove overall capital spending $109.3 million lower than the original budget for the year.

Impact of the COVID-19 Pandemic

The COVID-19 pandemic has resulted in a worldwide economic downturn and there continues to be considerable uncertainty with respect to the long-term economic effects the pandemic will have on financial and commodity markets. One of the impacts of COVID-19 has been a significant decline in the demand for crude oil, and to a lesser extent, natural gas.

We have three priorities while navigating through this continuing period of volatility and uncertainty:

• First, to ensure the health and safety of our employees and the contractors which provide services to us;

• Second, to continue to monitor the impact this pandemic has on demand for our products and related commodity prices; and

• Third, to ensure Range adapts and emerges from this event in as strong of a position as possible. Our objective and focus when the pandemic comes to an end is to emerge as a better company as we continue to drive our long-term strategies.

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This pandemic could affect our operations, major facilities or employees’ health; however, as of the date of this filing, we have not experienced a significant disruption to our operations and we have implemented pre-existing contingency planning, with many employees working remotely where possible in compliance with governmental restrictions and CDC best practices. We have a crisis team in place monitoring the rapidly evolving situation and recommending risk mitigation actions; we have implemented travel restrictions as well as visitor protocols; and we are following masking and social distancing practices in our offices and other work sites. There has been no material impact on supply for most of our sourced materials and to the extent such an impact has been realized or anticipated, continuity plans have been activated. We are also working closely with our processing and pipeline transportation partners to anticipate possible impacts on our continued operations. Our efforts to respond to the challenges presented by this pandemic have helped to minimize the impact of the pandemic on our business and operations.

The impact that COVID-19 will have on our business, cash flows, liquidity, financial condition and results of operations will depend on future developments, including, among others, the ultimate geographic spread and severity of the virus, any resurgence in COVID-19 transmission and infection, the consequences of governmental and other measures designed to mitigate the spread of the virus and alleviate strain on the healthcare system, the development of effective treatments, actions taken by customers, suppliers and other third parties, workforce availability and the timing and extent to which normal economic and operating conditions resume.

Management’s Discussion and Analysis of Results of Operations

Commodity prices have remained volatile. Natural gas, oil and NGLs benchmarks decreased in 2020 compared to 2019. As a result, we experienced significant decreases in our price realizations. While operating in this lower commodity price environment, we had many operational, financial and strategic successes in 2020 as we continued to focus on enhancing margins and returns, driving operational efficiencies, simplifying our portfolio and maintaining liquidity. We believe we have positioned ourselves for long-term success through the natural gas and oil commodity cycle.

Overview of 2020 Results

For the year ended December 31, 2020, we experienced a decrease in revenue from the sale of natural gas, NGLs and oil due to a 31% decrease in net realized prices (average prices including all derivative settlements and third-party transportation costs paid by us) and 2% lower production volumes when compared to 2019. Daily production in 2020 averaged 2.2 Bcfe compared to 2.3 Bcfe in 2019 reflecting the impact of the sale of our North Louisiana properties. Average natural gas differentials were below NYMEX while operating costs were lower when compared to 2019 which partially offset the significant decline in realized prices.

During 2020, we recognized a net loss of $711.8 million, or $2.95 per diluted common share compared to net loss of $1.7 billion, or $6.92 per diluted common share during 2019. The improvement in net loss for the year ended December 31, 2020 when compared to 2019 is due to significantly lower proved and unproved impairment charges which in the prior year were related to our North Louisiana assets and a higher gain on sale of assets partially offset by significantly lower net realized prices, an accrual of a divestiture contract obligation associated with the sale of our North Louisiana assets and reduced derivative fair value income.

During 2020, we achieved the following financial and operating performance results:

• received $246.1 million of cash proceeds from the disposal of assets, primarily from the sale of our North Louisiana assets;

• reduced our nearer term debt maturities through 2023 by approximately $1.2 billion with proceeds from asset sales along with refinancing transactions and liability management initiatives;

• our Marcellus Shale assets achieved a 3% production growth from 2019;

• adjusting for the sale of our North Louisiana assets, proved reserves declined less than 1%. The standardized after-tax measure of discounted future net cash flows decreased when compared to 2019 primarily due to lower prices, asset sales and the reclassification of reserves to unproved;

• capital spending was $109.3 million less than our initial 2020 capital budget of $520.0 million;

• drilled 51.4 net wells with a 100% success rate;

• continued expansion of our activities in the Marcellus Shale by growing production, proving up acreage and acquiring additional unproved acreage;

• reduced direct operating expense per mcfe 31% from 2019;

• reduced general and administrative expenses per mcfe 9% from 2019;

• reduced our DD&A rate per mcfe 27% from 2019;

• reduced our aggregate principal debt balances by $86.0 million;

• entered into additional commodity-based derivative contracts for 2021 through 2024;

• realized $268.7 million of cash flow from operating activities; and

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• ended the year with stockholders’ equity of $1.6 billion.

In conjunction with the sale of our North Louisiana assets, we retained certain midstream gathering, transportation and processing obligations through 2030. We determined the fair value of these obligations as of the closing date of the sale to be $479.8 million using a probability weighted discounted cash flow model. There are inherent uncertainties surrounding the retained obligation and as a result, the determination of the accrued obligation required significant judgement and estimation. The actual settlement amount and timing may differ from our estimates.

We generated $268.7 million of cash flow from operating activities in 2020, a decrease of $413.2 million from 2019 which reflects significantly lower realized prices, slightly lower production volumes and higher comparative working capital outflows ($53.9 million outflow during 2020 compared to $2.5 million inflow in 2019). We ended 2020 with $1.4 billion of available committed borrowing capacity, with an additional $600.0 million in borrowing base capacity available.

Acquisitions

During 2020, we spent $26.2 million to acquire unproved acreage compared to $57.3 million in 2019. We continue selective acreage leasing and lease renewals to consolidate our acreage positions in the Marcellus Shale play in Pennsylvania.

Divestitures

Our gain (loss) on sale of assets is primarily attributable to the following divestitures (in thousands):

Asset Sold	Completion Date		Gain (Loss) on Sale of Assets
Year Ended December 31, 2020:
North Louisiana assets		August 2020	$	(9,503	)
Shallow legacy assets in Northwest Pennsylvania		March 2020	$	122,506
Other		Various	$	(2,212	)
Year Ended December 31, 2019:
Overriding royalty in Pennsylvania (three transactions)		September 2020	$	(36,460	)
Unproved Pennsylvania assets		June 2020	$	5,866
Other		Various	$	338

2021 Outlook

As we enter 2021, we believe we are positioned for sustainable long-term success. For 2021, our board of directors approved a $425.0 million capital budget for natural gas, NGLs, crude oil and condensate related activities, excluding proved property acquisitions, for which we do not budget. As has been our historical practice, we will periodically review our capital expenditures throughout the year and may adjust the budget based on commodity prices, drilling success and other factors. We expect our 2021 capital budget to achieve production similar to our 2020 production, as we target limiting our capital spending to at or below cash flow. Our 2021 capital budget is designed to focus on continuing to improve corporate returns and generating free cash flow. To the extent commodity prices decline, we may reduce the capital budget with the intent of limiting capital spending to at or below cash flow. The prices we receive for our natural gas, NGLs and oil production are largely based on current market prices, which are beyond our control. The price risk on a portion of our forecasted natural gas, NGLs and oil production for 2021 is partially mitigated by entering into commodity derivative contracts and we intend to continue to enter into these types of contracts. We believe it is likely that commodity prices will continue to be volatile during 2021.

Market Conditions

Prices for natural gas, NGLs and oil that we produce significantly impact our revenues and cash flows. Prices for commodities, such as hydrocarbons, are inherently volatile. Natural gas and oil benchmarks decreased in 2020 when compared to the same period of 2019 and, as a result, we experienced a significant decrease in price realizations. In March 2020, Saudi Arabia and Russia engaged in a dispute over production levels that caused global oil prices to decline at a historic rate. On April 9, 2020, OPEC and Russia reached an agreement to reduce crude oil production by 9.7 MMbbl per day. As we continue to monitor the impact of the actions of OPEC and other large producing nations, the dispute over production levels between Russia and Saudi Arabia and the level of demand impacted by COVID-19, we expect prices for some or all of the commodities we produce to remain volatile. NYMEX natural gas futures have shown some improvements based on market expectations that declines in future natural gas supplies due to a substantial reduction of associated gas related to the curtailment of operations in oil basins throughout the United States and the impact of colder weather on natural gas storage inventory will more than offset the lower demand resulting from the COVID-19 pandemic.

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Prices for various quantities of natural gas, NGLs and oil that we produce significantly impact our revenues and cash flows. Prices for commodities, such as hydrocarbons, are inherently volatile. Recently, natural gas prices have decreased, when compared to December 2020, with the average NYMEX monthly settlement price for natural gas decreasing to $2.76 per mcf for February 2021. However, the recent colder weather has caused improved pricing and a decline in natural gas storage inventories. Crude oil prices have increased, when compared to December 2020, to $52.10 per barrel in January 2021. The following table lists related benchmarks for natural gas, oil and NGLs composite prices for the years ended December 31, 2020 and 2019.

	Year Ended December 31,
	2020		2019
Benchmarks:
Average NYMEX prices (a)
Natural gas (per mcf)	$	2.06	$	2.62
Oil (per bbl)	$	39.66	$	57.21
Mont Belvieu NGL composite (per gallon) (b)	$	0.37	$	0.45

^(a) Based on average of bid week prompt month prices on the New York Mercantile Exchange (“NYMEX”).

^(b) Based on our estimated NGLs product composition per barrel.

Our price realizations (not including the impact of our derivatives) may differ from the benchmarks for many reasons, including quality, location, or production being sold at different indices.

Natural Gas, NGLs and Oil Sales, Production and Realized Price Calculations

Our revenues vary from year to year as a result of changes in realized commodity prices and production volumes. In 2020, natural gas NGLs and oil sales decreased 29% from 2019 with a 2% decrease in production and a 27% decrease in realized prices (excluding cash settlements on our derivatives). The following table illustrates the primary components of natural gas, NGLs, crude oil and condensate sales for the last two years (in thousands):

	2020		2019
Natural gas, NGLs and Oil sales
Natural gas	$	943,740	$	1,388,838
NGLs		578,454		681,134
Oil and condensate		85,519		185,453
Total natural gas, NGLs and oil sales	$	1,607,713	$	2,255,425

Production is maintained through drilling success as we place new wells on production which is partially offset by the natural decline of our natural gas and oil reserves through production and asset sales. For 2020, our production increased 3% in our Appalachian region when compared to 2019. Production from our North Louisiana properties was 38.0 Bcfe in 2020 compared to 76.5 Bcfe in 2019 with the sale of these properties closing in August 2020. Our production for the last two years is set forth in the following table:

	2020	2019
Production (a)
Natural gas (mcf)	574,529,290	578,114,351
NGLs (bbls)	37,491,546	38,850,130
Crude oil and condensate (bbls)	2,829,495	3,689,805
Total (mcfe) (b)	816,455,536	833,353,961
Average daily production (a)
Natural gas (mcf)	1,569,752	1,583,875
NGLs (bbls)	102,436	106,439
Crude oil and condensate (bbls)	7,731	10,109
Total (mcfe) (b)	2,230,753	2,283,162

^(a) Represents volumes sold regardless of when produced.

^(b)  Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil and natural gas, which is not indicative of the relationship between oil and natural gas prices.

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Our average realized price (including all derivative settlements and third-party transportation costs paid by Range) received during 2020 was $1.03 per mcfe compared to $1.49 per mcfe in 2019. Because we record transportation costs on two separate bases, as required by U.S. GAAP, we believe computed final realized prices should include the impact of transportation, gathering, processing and compression expense. Average sales prices (excluding derivative settlements) do not include any derivative settlements or third-party transportation costs which are reported in transportation, gathering and compression expense on the accompanying consolidated statements of operations. Average sales prices (excluding derivative settlements) do include transportation costs where we receive net proceeds from the purchaser. Our average realized price (including all derivative settlements and third-party transportation costs paid by Range) calculation includes all cash settlements for derivatives. Average realized price calculations for the last two years are shown below:

	2020		2019
Average Prices
Average sales prices (excluding derivative settlements):
Natural gas (per mcf)	$	1.64	$	2.40
NGLs (per bbl)		15.43		17.53
Crude oil (per bbl)		30.22		50.26
Total (per mcfe) (a)		1.97		2.71
Average realized prices (including all derivative settlements):
Natural gas (per mcf)	$	2.09	$	2.64
NGLs (per bbl)		15.73		18.85
Crude oil (per bbl)		48.79		49.74
Total (per mcfe) (a)		2.36		2.93
Average realized prices (including all derivative settlements and third-party transportation costs paid by Range):
Natural gas (per mcf)	$	0.96	$	1.36
NGLs (per bbl)		4.06		7.03
Crude oil (per bbl)		48.46		49.74
Total (per mcfe) (a)		1.03		1.49

^(a) Oil and NGLs volumes are converted at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

Realized prices include the impact of basis differentials and gains or losses realized from our basis hedging. The prices we receive for our natural gas can be more or less than the NYMEX price because of adjustments for delivery location, relative quality and other factors. The following table provides this impact on a per mcf basis:

	Year Ended December 31,
		2020			2019
Average natural gas differentials below NYMEX	$	(0.42	)	$	(0.22	)
Realized gains on basis hedging	$	0.06		$	0.03

The following tables reflect our production and average realized commodity prices (excluding derivative settlements and third-party transportation costs paid by Range) (in thousands, except prices):

		Year Ended December 31,
		2019		Price Variance			Volume Variance			2020
Natural gas
Price (per mcf)	$	2.40	$	(0.76	)	$	—		$	1.64
Production (Mmcf)		578,114		—			(3,585	)		574,529
Natural gas sales	$	1,388,838	$	(436,485	)	$	(8,613	)	$	943,740

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		Year Ended December 31,
		2019		Price Variance			Volume Variance			2020
NGLs
Price (per bbl)	$	17.53	$	(2.10	)	$	—		$	15.43
Production (Mbbls)		38,850		—			(1,358	)		37,492
NGLs sales	$	681,134	$	(78,861	)	$	(23,819	)	$	578,454

		Year Ended December 31,
		2019		Price Variance			Volume Variance			2020
Crude oil
Price (per bbl)	$	50.26	$	(20.04	)	$	—		$	30.22
Production (Mbbls)		3,690		—			(861	)		2,829
Crude oil sales	$	185,453	$	(56,694	)	$	(43,240	)	$	85,519

		Year Ended December 31,
		2019		Price Variance			Volume Variance			2020
Consolidated
Price (per mcfe)	$	2.71	$	(0.74	)	$	—		$	1.97
Production (Mmcfe)		833,354		—			(16,898	)		816,456
Total natural gas, NGLs and oil sales	$	2,255,425	$	(601,977	)	$	(45,735	)	$	1,607,713

Transportation, gathering, processing and compression expense was $1.1 billion in 2020 compared to $1.2 billion in 2019. These third-party costs are lower due to the impact of the sale of our North Louisiana assets. We have included these costs in the calculation of average realized prices (including all derivative settlements and third-party transportation expenses paid by Range). The following table summarizes transportation, gathering, processing and compression expense for the last two years (in thousands) and on a per mcf and per barrel basis:

	2020		2019
Natural gas	$	650,071	$	740,061
NGLs		437,474		459,236
Oil		945		—
Total	$	1,088,490	$	1,199,297
Natural gas (per mcf)	$	1.13	$	1.28
NGLs (per bbl)	$	11.67	$	11.82
Oil (per bbl)	$	0.33	$	—

Derivative fair value income (loss) was income of $187.7 million in 2020 compared to $226.7 million in 2019. All of our derivatives are accounted for using the mark-to-market accounting method. Mark-to-market accounting treatment creates volatility in our revenues as unrealized gains and losses from derivatives are included in total revenues. As commodity prices increase or decrease, such changes will have an opposite effect on the mark-to-market value of our derivatives. Gains on our derivatives generally indicate lower wellhead revenues in the future while losses indicate higher future wellhead revenues. At December 31, 2020, our commodity derivative contracts were recorded at their fair value, which was a net derivative liability of $18.0 million, a decrease of $144.7 million from the $126.7 million net derivative asset recorded as of December 31, 2019. We have also entered into basis swap agreements to limit volatility caused by changing differentials between NYMEX and regional prices received. These basis swaps are marked to market and we recognized a net derivative asset of $3.7 million as of December 31, 2020 compared to a net derivative asset of $9.4 million as of December 31, 2019. As of December 31, 2020, we have propane basis swaps to limit the volatility caused by changing differentials between Mont Belvieu and international propane indexes which are recognized as a net derivative asset of $794,000 as of December 31, 2020 compared to a net derivative liability of $14.1 million as of December 31, 2019. In connection with our international propane swaps, we also have freight swap contracts which lock in the freight rate for a specific trade route on the Baltic Exchange which are recognized as a net derivative asset of $1.1 million as of December 31, 2020 compared to a net derivative asset of $1.5 million as of December 31, 2019. The following table summarizes the impact of our commodity derivatives for the last two years (in thousands):

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		2020			2019
Derivative fair value income per consolidated statements of operations	$	187,711		$	226,681
Non-cash fair value (loss) gain: (1)
Natural gas derivatives	$	(132,978	)	$	135,012
Oil derivatives		519			(35,950	)
NGLs derivatives		(3,004	)		(62,856	)
Freight derivatives		(425	)		2,091
Contingent consideration		970			—
Total non-cash fair value (loss) gain (1)	$	(134,918	)	$	38,297
Net cash receipt (payment) on derivative settlements:
Natural gas derivatives	$	258,797		$	139,253
Oil derivatives		52,544			(1,937	)
NGLs derivatives		11,288			51,068
Total net cash receipt	$	322,629		$	188,384

⁽¹⁾ Non-cash fair value adjustments on commodity derivatives is a non-GAAP measure. Non-cash fair value adjustments on commodity derivatives only represent the net change between periods of the fair market values of commodity derivative positions and exclude the impact of settlements on commodity derivatives during the period. We believe that non-cash fair value adjustments on commodity derivatives is a useful supplemental disclosure to differentiate non-cash fair market value adjustments from settlements on commodity derivatives during the period. Non-cash fair value adjustments on commodity derivatives is not a measure of financial or operating performance under GAAP, nor should it be considered a substitute for derivative fair value income or loss as reported in our consolidated statements of operations.

Brokered natural gas, marketing and other revenue was $173.3 million in 2020 compared to $345.5 million in 2019. We enter into purchase transactions with third parties and separate sale transactions with third parties at different times to satisfy unused pipeline capacity commitments. The 2020 period includes $160.1 million of revenue from the sale of natural gas that is not related to our production (brokered) and $3.8 million of revenue from the sale of NGLs that is not related to our production. The 2019 period includes $332.0 million of revenue from the brokered sale of natural gas and $1.7 million of revenue from the sale of NGLs that is not related to our production. These revenues both decreased compared to 2019 due to lower brokered volumes and lower sales prices.

Costs and Expenses per mcfe

We believe some of our expense fluctuations are best analyzed on a unit-of-production, or per mcfe, basis. The following presents information about certain of our expenses on a per mcfe basis for the last two years:

	Year Ended December 31,
	2020		2019		Change			% Change
Direct operating expense	$	0.11	$	0.16	$	(0.05	)		(31	%)
Production and ad valorem tax expense		0.03		0.05		(0.02	)		(40	%)
General and administrative expense		0.20		0.22		(0.02	)		(9	%)
Interest expense		0.24		0.23		0.01			4	%
Depletion, depreciation and amortization expense		0.48		0.66		(0.18	)		(27	%)

Direct operating expense was $92.2 million in 2020 compared to $136.3 million in 2019. Direct operating expenses include normally recurring expenses to operate and produce our wells, non-recurring workovers and repair-related expenses. On an absolute basis, our direct operating expenses for 2020 decreased 32% from the prior year primarily due to the impact of the sale of our North Louisiana assets and the sale of various higher operating cost legacy properties in Pennsylvania, lower workover and lower water handling/hauling costs. We incurred $7.3 million of workover costs in 2020 compared to $24.3 million of workover costs in 2019.

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On a per mcfe basis, operating expense for 2020 decreased $0.05, or 31% from the same period of 2019, with the decrease due to the impact of the sale of higher operating cost properties (including our North Louisiana and Northeast Pennsylvania assets) and lower workover costs. Stock-based compensation expense represents the amortization of equity grants as part of the compensation of field employees. The following table summarizes direct operating expenses per mcfe for the last two years:

	Year Ended December 31,
	2020		2019		Change			% Change
Lease operating expense	$	0.10	$	0.13	$	(0.03	)		(23	%)
Workovers		0.01		0.03		(0.02	)		(67	%)
Stock-based compensation		—		—		—			—	%
Total direct operating expense	$	0.11	$	0.16	$	(0.05	)		(31	%)

Production and ad valorem taxes are paid based on market prices, not hedged prices. This expense category also includes the Pennsylvania impact fee. In February 2012, the Commonwealth of Pennsylvania enacted an “impact fee” on unconventional natural gas and oil production which includes the Marcellus Shale. The impact fee is based upon the year wells are drilled and the fee varies, like a severance tax, based upon natural gas prices. The year ended December 31, 2020 includes a $17.7 million impact fee compared to $25.9 million in the year ended December 31, 2019 with the decline primarily due to lower natural gas prices. Production and ad valorem taxes (excluding the impact fee) were $7.0 million in 2020 compared to $12.0 million in 2019 with the decline also due to lower natural gas prices and the sale of our North Louisiana assets. The following table summarizes production and ad valorem taxes per mcfe for the last two years:

	Year Ended December 31,
	2020		2019		Change			% Change
Production taxes	$	0.01	$	0.01	$	—			—	%
Ad valorem taxes		—		—		—			—	%
Impact fee		0.02		0.04		(0.02	)		(50	%)
Total production and ad valorem	$	0.03	$	0.05	$	(0.02	)		(40	%)

General and administrative expense was $159.4 million for 2020 compared to $181.1 million for 2019. The decrease in 2020, when compared to 2019, is primarily due to lower salaries and benefits of $4.3 million, lower bad debt expenses of $3.9 million, lower stock-based compensation of $2.2 million, lower consulting costs of $1.9 million, lower rig release penalties of $1.4 million and lower travel and general office expenses, including technology costs. As of December 31, 2020, the number of general and administrative employees decreased 20% when compared to December 31, 2019.

On a per mcfe basis, general and administrative expense for 2020 decreased 9% from the same period of 2019, with the decrease due to lower salaries and benefits, lower bad debt expense and lower travel and general office expenses, including technology costs. Stock-based compensation expense represents the amortization of stock-based compensation awards granted to our employees and our non-employee directors as part of their compensation. The following table summarizes general and administrative expenses per mcfe for the last two years:

	Year Ended December 31,
	2020		2019		Change			% Change
General and administrative	$	0.16	$	0.18	$	(0.02	)		(11	%)
Stock-based compensation		0.04		0.04		—			—	%
Total general and administrative expense	$	0.20	$	0.22	$	(0.02	)		(9	%)

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Interest expense was $192.7 million for 2020 compared to $194.3 million for 2019. The following table presents information about interest expense per mcfe for the last two years:

	Year Ended December 31,
	2020			2019
Bank credit facility	$	0.03		$	0.04
Senior notes		0.20			0.18
Amortization of deferred financing costs and other		0.01			0.01
Total interest expense	$	0.24		$	0.23
Average debt outstanding (in thousands)	$	3,239,784		$	3,640,819
Average interest rate (a)		5.7	%		5.1	%

^(a) Includes commitment fees but excludes amortization of debt issue costs and amortization of discount.

On an absolute basis, the decrease in interest expense for 2020 from the same period of 2019 was primarily due to lower average outstanding debt balances partially offset by slightly higher average interest rates. See Note 8 to our consolidated financial statements for additional information. Average debt outstanding on the bank credit facility for 2020 was $668.0 million compared to $772.1 million for 2019 and the weighted average interest rate on the bank credit facility was 2.6% for 2020 compared to 3.8% in 2019.

Depletion, depreciation and amortization (“DD&A”) was $394.3 million in 2020 compared to $548.8 million in 2019. The decrease in 2020 when compared to 2019 is due to a 25% decrease in depletion rates and a 2% decrease in production volumes.

On a per mcfe basis, DD&A decreased to $0.48 in 2020 compared to $0.66 in 2019. Depletion expense, the largest component of DD&A, was $0.47 per mcfe in 2020 compared to $0.63 per mcfe in 2019. We have historically adjusted our depletion rates in the fourth quarter of each year based on our year-end reserve report and at other times during the year when circumstances indicate there has been a significant change in reserves or costs. We currently expect our DD&A rate to be approximately $0.47 per mcfe in 2021, based on our current production estimates. In areas where we are actively drilling, our fourth quarter adjusted 2020 depletion rates were lower than the fourth quarter 2019. The decrease in DD&A per mcfe in 2020 when compared to 2019 is due to the mix of our production from our properties with lower depletion rates and asset sales. The following table summarizes DD&A expenses per mcfe for the last two years:

	Year Ended December 31,
	2020		2019		Change			% Change
Depletion and amortization	$	0.47	$	0.63	$	(0.16	)		(25	%)
Depreciation		—		0.01		(0.01	)		(100	%)
Accretion and other		0.01		0.02		(0.01	)		(50	%)
Total DD&A expenses	$	0.48	$	0.66	$	(0.18	)		(27	%)

Other Operating Expenses

Our total operating expenses also include other expenses that generally do not trend with production. These expenses include stock-based compensation, brokered natural gas and marketing, exploration, abandonment and impairment of unproved properties, exit and termination costs, deferred compensation plan, gain on early extinguishment of debt and impairment of proved properties and other assets.

The following table details stock-based compensation that is allocated to functional expense categories for the last two years (in thousands):

	2020		2019
Direct operating expense	$	1,078	$	1,928
Brokered natural gas and marketing expense		1,416		1,856
Exploration expense		1,279		1,566
General and administrative expense		32,905		35,061
Termination costs		2,165		1,971
Total stock-based compensation	$	38,843	$	42,382

Stock-based compensation includes the amortization of restricted stock and PSUs grants.

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Brokered natural gas and marketing expense was $188.3 million in 2020 compared to $359.9 million in 2019. We enter into purchase transactions with third parties and separate sale transactions with third parties at different times to satisfy unused capacity commitments. The decrease in these costs reflects lower broker purchase volumes and lower purchase prices. The following table details our brokered natural gas, marketing and other net margin which includes the net effect of these third-party transactions for the two-year period ended December 31, 2020 (in thousands):

	2020			2019
Brokered natural gas sales	$	160,122		$	332,006
Brokered NGLs sales		3,776			1,661
Other marketing revenue		9,375			11,842
Brokered natural gas purchases and transportation		(175,039	)		(347,448	)
Brokered NGLs purchases		(4,691	)		(1,592	)
Other marketing expense		(8,586	)		(10,852	)
Net brokered natural gas and marketing net margin	$	(15,043	)	$	(14,383	)

Exploration expense was $32.7 million in 2020 compared to $36.7 million in 2019. Exploration expense in 2020 was lower compared to the prior year due to lower delay rentals and other costs and lower personnel costs. Stock-based compensation represents the amortization of equity stock grants as part of the compensation of our exploration staff. The following table details our exploration related expenses for the last two years (in thousands):

	Year Ended December 31,
	2020		2019			Change			% Change
Seismic	$	1,761	$	(482	)	$	2,243			465	%
Delay rentals and other		21,187		26,137			(4,950	)		(19	%)
Personnel expense		7,539		9,473			(1,934	)		(20	%)
Stock-based compensation expense		1,279		1,566			(287	)		(18	%)
Exploratory dry hole expense		888		(11	)		899			NM
Total exploration expense	$	32,654	$	36,683		$	(4,029	)		(11	%)

Abandonment and impairment of unproved properties was $19.3 million in 2020 compared to $1.2 billion in 2019. In 2019, an impairment of $1.2 billion was recorded associated with our North Louisiana unproved property value allocated to previously acquired probable and possible reserves that we no longer had the intent to drill based on a shift in capital allocation which materially impacted our drilling inventory. Our North Louisiana assets were sold in August 2020. Impairment of individually insignificant unproved properties is assessed and amortized on an aggregate basis based on our average holding period, expected forfeiture rate and anticipated drilling success. We assess individually significant unproved properties for impairment on a quarterly basis and recognize a loss where circumstances indicate impairment in value. In determining whether a significant unproved property is impaired we consider numerous factors including, but not limited to, current exploration plans, favorable or unfavorable activity on the property being evaluated and/or adjacent properties, our geologists’ evaluation of the property and the remaining months in the lease term for the property. In certain circumstances, our future plans to develop acreage may accelerate our impairment.

Exit and termination costs in 2020 were $547.4 million compared to $9.5 million in 2019. In August 2020, we completed the sale of our North Louisiana operations in a transaction that included the retention of certain related gathering, transportation and processing obligations extending until 2030. The present value of these estimated future obligations totaled $479.8 million and were recorded in third quarter 2020. In addition, we agreed to pay a midstream company $28.5 million to reduce our financial obligation related to the minimum volume commitments associated with this asset. In second quarter 2020, we negotiated capacity releases on certain transportation pipelines in Pennsylvania and we recorded $10.4 million of exit costs which represents the discounted present volume of our remaining obligations. The following table details our exit and termination costs for the last two years (in thousands):

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	Year Ended December 31,
	2020		2019
Severance costs	$	5,909	$	7,535
Transportation contract capacity releases (including accretion of discount)		10,900		—
Divestiture contract obligation (including accretion of discount)		499,935		—
One-time minimum volume commitment contract payment		28,500		—
Stock-based compensation		2,165		1,971
	$	547,409	$	9,506

Deferred compensation plan expense was a loss of $12.5 million in 2020 compared to a gain of $15.5 million in 2019. Our stock price increased to $6.70 at December 31, 2020 from $4.85 at December 31, 2019. This non-cash item relates to the increase or decrease in value of the liability associated with our common stock that is vested and held in our deferred compensation plan. The deferred compensation liability is adjusted to fair value by a charge or a credit to deferred compensation plan expense. Common shares are placed in the deferred compensation plan when granted.

Gain on early extinguishment of debt was $14.1 million in 2020 compared to $5.4 million in 2019. In 2020, we purchased for cash $1.0 billion aggregate principal amount of various senior and senior subordinated notes. An early cash tender of $20.4 million was paid to note holders who tendered their notes within the ten business day offer period. We recorded a loss on early extinguishment of debt of $25.5 million, net of transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt. Also in 2020, we purchased in the open market $161.0 million principal amount of various senior and senior subordinated notes. We recorded a gain on early extinguishment of debt of $39.6 million, net of transaction costs and the expensing of the remaining deferred financing costs. In 2019, we repurchased $201.6 million face value of our 5.75% senior notes due 2021, our 5.875% senior notes due 2022 and our 5.00% senior notes due 2022 at a discount and recorded a gain of $5.4 million on early extinguishment of debt after transaction costs and expensing the remaining deferred financing costs.

Impairment of proved properties and other decreased to $79.0 million in 2020 compared to $1.1 billion in 2019. We assess our long-lived assets whenever events or circumstances indicate the carrying value may not be recoverable. Fair value is generally determined using an income approach based on internal estimates of future production levels, prices, drilling and operating costs and discount rates. In some cases, we may also use a market approach, based on either anticipated sales proceeds less costs to sell or a market comparable sales price. The year ended December 31, 2019 included a $1.1 billion impairment related to our North Louisiana assets due to a shift in business strategy employed by management and the possibility of a divestiture of these assets. Early in 2020, we recognized additional impairment charges of $77.0 million related to these North Louisiana assets that reduced the carrying value to the anticipated sales proceeds which is a market approach. See Note 11 to our consolidated financial statements for additional details.

Income tax (benefit) expense was a benefit of $25.6 million in 2020 compared to $500.3 million in 2019. The 2020 decrease reflects a $1.5 billion improvement in our operating loss before income taxes when compared to 2019. The effective tax rate was 3.5% in 2020 compared to 22.6% in 2019. The 2020 and 2019 effective tax rates were different than the statutory tax rate due to state income taxes and other discrete tax items which are detailed below. For the year ended December 31, 2019, current income tax expense relates to state income taxes. The following table summarizes our tax activity for the last two years (in thousands):

		2020			2019
Total loss before income taxes	$	(737,329	)	$	(2,216,588	)
U.S. federal statutory rate		21	%		21	%
Total tax benefit at statutory rate		(154,839	)		(465,483	)
State and local income taxes, net of federal benefit		(38,413	)		(83,348	)
State rate and law change		(31,469	)		(40,574	)
Non-deductible executive compensation		474			474
Tax less than book equity compensation		4,933			4,625
Change in valuation allowances:
Federal valuation allowances & other		124,631			27,922
State valuation allowances & other		68,836			56,925
Permanent differences and other		295			(832	)
Total benefit for income taxes	$	(25,552	)	$	(500,291	)
Effective tax rate		3.5	%		22.6	%

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We estimate our ability to utilize our deferred tax assets by analyzing the reversal patterns of our temporary differences, our loss carryforward periods and the Pennsylvania net operating loss carryforward limitations. Uncertainties such as future commodity prices can affect our calculations and the expiration of loss carryforwards prior to utilization can result in recording a partial as opposed to a full valuation allowance.

Management’s Discussion and Analysis of Financial Condition, Cash Flows, Capital Resources and Liquidity

Cash Flows

The following table presents sources and uses of cash and cash equivalents for the last two years (in thousands):

		2020			2019
Sources of cash and cash equivalents
Operating activities	$	268,680		$	681,843
Disposal of assets		246,127			784,937
Borrowing on credit facility		2,076,000			2,311,000
New senior notes		850,000			—
Other		23,045			22,672
Total sources of cash and cash equivalents	$	3,463,852		$	3,800,452
Uses of cash and cash equivalents
Additions to natural gas and oil properties	$	(405,617	)	$	(687,277	)
Acreage purchases		(26,816	)		(59,986	)
Other property		(2,873	)		(1,162	)
Repayments on credit facility		(1,851,000	)		(2,777,000	)
Repayment of senior notes		(1,120,634	)		(195,432	)
Dividends paid		—			(20,070	)
Repurchases of treasury stock		(22,992	)		(6,908	)
Other		(34,008	)		(52,616	)
Total uses of cash and cash equivalents	$	(3,463,940	)	$	(3,800,451	)

Cash flows from operating activities are primarily affected by production volumes and commodity prices, net of the effects of settlements of our derivatives. Our cash flows from operating activities are also impacted by changes in working capital. We generally maintain low cash and cash equivalent balances because we use available funds to reduce our bank debt. Short-term liquidity needs are satisfied by borrowings under our bank credit facility. Because of this, and because our principal source of operating cash flows (proved reserves to be produced in the following year) cannot be reported as working capital, we often have low or negative working capital. We sell a portion of our production at the wellhead under floating market contracts. From time to time, we enter into various derivative contracts to provide an economic hedge of our exposure to commodity price risk associated with anticipated future natural gas, NGLs and oil production. The production we hedge has and will continue to vary from year to year depending on, among other things, our expectation of future commodity prices. Since year-end 2020, we have entered into additional natural gas and NGLs hedges for 2021. Any payments due to counterparties under our derivative contracts should ultimately be funded by prices received from the sale of our production. However, production receipts often lag payments to the counterparties. Any interim cash needs are funded by borrowings under the bank credit facility. As of December 31, 2020, we have entered into derivative agreements covering 419.8 Bcfe for 2021, not including our basis swaps.

Net cash provided from operating activities in 2020 was $268.7 million compared to $681.8 million in 2019. The decrease in cash provided from operating activities is the result of a 31% decrease in average realized prices (including all derivatives settlements and third-party transportation costs) and a 2% decrease in production volumes. Net cash provided from operating activities is also affected by working capital changes or the timing of cash receipts and disbursements. Changes in working capital (as reflected in our consolidated statements of cash flows) for 2020 was an outflow of $53.9 million compared to an inflow of $2.5 million for 2019.

Disposal of assets in 2020 included proceeds of $246.1 million primarily from the sale of our North Louisiana assets. Disposal of assets in 2019 included proceeds of $750.0 million from the sale, in three separate transactions, of a proportionately reduced 2.5% overriding royalty in our Washington County, Pennsylvania leases and $34.0 million of proceeds from the sale of unproved property in Pennsylvania.

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Additions to natural gas and oil properties are our most significant use of cash and cash equivalents. These cash outlays are associated with our drilling and completion capital budget program. The following table shows capital expenditures by region and reconciles to additions to natural gas and oil properties as presented on our consolidated statements of cash flows for the last two years (in thousands):

		2020		2019
Appalachian	$	378,509	$	604,721
North Louisiana		1,987		65,846
Total		380,496		670,567
Change in capital expenditure accrual for proved properties		25,121		16,710
Additions to natural gas and oil properties	$	405,617	$	687,277

Repayment of senior notes for 2020 includes open market purchases of $161.0 million aggregate principal amount of various senior and senior subordinated notes due 2021, 2022 and 2023. In addition, 2020 also included two transactions where we repurchased $1.0 billion aggregate principal amount of various senior and senior subordinated notes due 2021, 2022 and 2023 where we paid an early cash tender to those note holders who tendered their notes within a ten business day offer period. By comparison, 2019 included open market purchases of $101.8 million principal amount of our 5.75% senior notes due 2021, $68.1 million principal amount of our 5.00% senior notes due 2022 and $31.6 million principal amount of our 5.875% senior notes due 2022.

Liquidity and Capital Resources

Based on the current commodity price environment, we believe we have sufficient liquidity and capital resources to execute our business plan for the foreseeable future. We continue to manage the duration and level of our drilling and completion commitments in order to maintain flexibility with regard to our activity level and capital expenditures.

Sources of Cash

We currently expect our 2021 capital program to be funded by cash flows from operations with any remaining needs being funded by borrowings under our credit facility. During the year ended December 31, 2020, we generated $268.7 million of cash flows from operating activities. As of December 31, 2020, the remaining available borrowing capacity under our bank credit facility was $1.4 billion; however, our borrowing base can be adjusted as a result of changes in commodity prices, acquisitions or divestitures of proved properties or financing activities. In early January 2021, we issued $600.0 million aggregate principal amount of new senior notes due 2029, with the proceeds used to reduce our bank credit facility balance.

Although we expect cash flows and capacity under the existing credit facility to be sufficient to fund our expected 2021 capital program, we may also elect to raise funds through new debt or equity offerings or from other sources of financing. Future downgrades in our credit ratings could make it more difficult or expensive for us to borrow additional funds. All of our sources of liquidity can be affected by the general conditions of the broader economy, force majeure events and fluctuations in commodity prices, operating costs and volumes produced, all of which affect us and our industry. We have no control over market prices for natural gas, NGLs or oil, although we may be able to influence the amount of realized revenues through the use of derivative contracts as part of our commodity price risk management.

Bank Credit Facility

Our bank credit facility is secured by substantially all of our assets and has a maturity date of April 13, 2023. As of December 31, 2020, we maintain a borrowing base of $3.0 billion and aggregate lender commitments of $2.4 billion. We also have undrawn letters of credit of $334.6 million.

The borrowing base is subject to regular, semi-annual redeterminations and is dependent on a number of factors but primarily the lender’s assessment of future cash flows. The next scheduled borrowing base redetermination is during the spring of 2021. In addition, we expect to complete our renegotiation of a new credit facility by first quarter 2022 and, although we are confident we will be able to secure the appropriate size facility to provide us with sufficient access to liquidity, the new terms or the size of a new credit facility are uncertain. We must comply with certain financial and non-financial covenants, including limiting dividend payments, debt incurrence and requirements that we maintain certain financial ratios (as defined in our bank credit agreement). We were in compliance with all such covenants at December 31, 2020.

Our daily weighted-average bank credit facility debt balance was $656.7 million for the year ended December 31, 2020 compared to $763.2 million for the year ended December 31, 2019. Borrowings under the bank credit facility can either be at the alternate base rate (“ABR,” as defined in the bank credit facility agreement) plus a spread ranging from 0.25% to 1.25% or at the LIBOR Rate (as defined in the bank credit facility agreement) plus a spread ranging from 1.25% to 2.25%. The applicable spread is dependent upon borrowings relative to the borrowing base. We may elect, from time to time, to convert all or any part of our LIBOR loans to base rate loans or to convert all or any of the base rate loans to LIBOR loans.

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Uses of Cash

We use cash for the development, exploration and acquisition of natural gas and oil properties and for the payment of gathering, transportation and processing costs, operating, general and administrative costs, taxes and debt obligations, including interest. Expenditures for the development, exploration and acquisition of natural gas and oil properties are the primary use of our capital resources. During 2020, we spent $435.3 million on capital expenditures as reported in our consolidated statement of cash flows. The amount of our future capital expenditures will depend upon a number of factors including our cash flows from operating, investing and financing activities and our ability to execute our development program. In addition, the impact of commodity prices on investment opportunities, the availability of capital and the timing and results of our development activities may lead to changes in funding requirements for future development. We periodically review our budget to assess changes in current and projected cash flows, debt requirements and other factors.

We may from time to time repurchase or redeem all or portions of our outstanding debt securities for cash, through exchanges for other securities or a combination of both. Such repurchases or redemptions may be made in open market transactions and will depend on prevailing market conditions, our liquidity requirements, contractual restrictions and other factors. The amounts involved may be material. As part of our strategy for 2021, we will continue to focus on improving our debt metrics.

Proved Reserves

To maintain and grow production and cash flow, we must continue to develop existing proved reserves and locate or acquire new natural gas, NGLs and oil reserves. The following is a discussion of proved reserves, reserve additions and revisions and future net cash flows from proved reserves.

	Year End December 31,
	2020			2019
	(Mmcfe)
Proved Reserves:
Beginning of year		18,191,583			18,072,406
Reserve additions		1,264,283			1,161,274
Reserve revisions		(608,211	)		303,068
Sales		(828,085	)		(511,811	)
Production		(816,456	)		(833,354	)
End of year		17,203,114			18,191,583
Proved Developed Reserves:
Beginning of year		9,902,467			9,756,870
End of year		9,792,540			9,902,467

Our proved reserves at year-end 2020 were 17.2 Tcfe compared to 18.2 Tcfe at year-end 2019. Natural gas comprised approximately 65% of our proved reserves at year-end 2020, 2019 and 2018.

Reserve Additions and Revisions. During 2020, we added 1.3 Tcfe of proved reserves from drilling activities and evaluation of proved areas in Pennsylvania. Approximately 80% of the 2020 reserve additions are attributable to natural gas. Included in 2020 proved reserves is a total of 509.9 Mmbbls of ethane reserves (2,256 Bcfe) in the Marcellus Shale, which represents reserves that match volumes delivered under our existing long-term, extendable contracts. Revisions of previous estimates of a negative 608.2 Bcfe includes 961.1 Bcfe reserves reclassified to unproved because of previously planned wells not expected to be drilled within the original five year development horizon, negative pricing revisions of 67.9 Bcfe somewhat offset by positive performance revisions of 420.8 Bcfe. During 2019, we added 1.2 Tcfe of proved reserves from drilling activities and evaluation of proved areas in the Marcellus Shale. Approximately 83% of 2019 reserve additions was attributable to natural gas. Included in 2019 proved reserves is a total of 475.0 Mmbbls of ethane reserves (2,102 Bcfe) in the Marcellus Shale, which represents reserves that match volumes delivered under our existing long-term, extendable contracts. Revisions of previous estimates of 303.1 Bcfe includes positive performance revisions of 922.2 Bcfe somewhat offset by 601.3 Bcfe reserves reclassified to unproved due to drilling plans and negative pricing revisions of 17.8 Bcfe.

Sales. In 2020, we sold 828.1 Bcfe of reserves related to the sale of our North Louisiana assets. In 2019, we sold 511.8 Bcfe of reserves in Pennsylvania.

Future Net Cash Flows. At December 31, 2020, the present value (discounted at 10%) of estimated future net cash flows from our proved reserves was $3.0 billion. The present value of our estimated future net cash flows at December 31, 2019 was $7.6 billion. This present value was calculated based on the unweighted average first-day-of-the-month oil and gas prices for the prior twelve months held flat for the life of the reserves, in accordance with SEC rules. At December 31, 2020, the after-tax present value of estimated future net cash flows from our proved reserves was $2.8 billion compared to $6.6 billion at December 31, 2019.

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The present value of future net cash flows does not purport to be an estimate of the fair market value of our proved reserves. An estimate of fair value would also take into account, among other things, anticipated changes in future prices and costs, the expected recovery of reserves in excess of proved reserves and a discount factor more representative of the time value of money to the evaluating party and the perceived risks inherent in producing oil and gas.

Capitalization and Dividend Payments

As of December 31, 2020 and 2019, our total debt and capitalization were as follows (in thousands):

	2020			2019
Bank debt	$	693,123		$	464,319
Senior notes		2,355,223			2,659,844
Senior subordinated notes		37,261			48,774
Total debt		3,085,607			3,172,937
Stockholders’ equity		1,637,535			2,347,488
Total capitalization	$	4,723,142		$	5,520,425
Debt to capitalization ratio		65.3	%		57.5	%

The amount of future dividends is subject to declaration by the board of directors and primarily depends on earnings, capital expenditures and various other factors. In 2019, we paid $20.1 million in dividends to our stockholders ($0.02 per share per quarter). In January 2020, we announced that the board had suspended the dividend on our common stock.

Cash Contractual Obligations

Our contractual obligations include long-term debt, operating leases, derivative obligations, asset retirement obligations, and transportation, gathering and processing commitments. As of December 31, 2020, we do not have any capital leases or any significant off-balance sheet debt or other such unrecorded obligations and we have not guaranteed any debt of any unrelated party. As of December 31, 2020, we had a total of $334.6 million of letters of credit outstanding under our bank credit facility. The table below provides estimates of the timing of future payments that we are obligated to make based on agreements in place at December 31, 2020. In addition to the contractual obligations listed on the table below, our consolidated balance sheet at December 31, 2020 reflects accrued interest payable on our bank debt of $2.5 million, which is payable in first quarter 2021. We expect to make interest payments through the end of each note maturity, based upon the amounts outstanding at December 31, 2020, of $2.6 million on our 5.75% senior and senior subordinated notes, $36.0 million on our 5.00% senior and senior subordinated notes, $36.6 million on our 4.875% senior notes, $2.9 million on our 5.875% senior notes and $78.6 million on our 9.25% senior notes.

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The following summarizes our contractual financial obligations at December 31, 2020 and their future maturities. We expect to fund these contractual obligations with cash generated from operating activities, borrowings under our bank credit facility, additional debt issuances and proceeds from asset sales (in thousands).

	Payment due by period
	2021		2022		2023		2024 and 2025		Thereafter		Total
Debt:
Bank debt due 2023 (a)	$	—	$	—	$	702,000	$	—	$	—	$	702,000
5.75% senior subordinated notes due 2021		19,896		—		—		—		—		19,896
5.0% senior subordinated notes due 2022		—		9,730		—		—		—		9,730
5.0% senior subordinated notes due 2023		—		—		7,712		—		—		7,712
5.75% senior notes due 2021		25,496		—		—		—		—		25,496
5.00% senior notes due 2022		—		169,589		—		—		—		169,589
5.00% senior notes due 2023		—		—		532,335		—		—		532,335
5.875% senior notes due 2022		—		49,018		—		—		—		49,018
4.875% senior notes due 2025		—		—		—		750,000		—		750,000
9.25% senior notes due 2026		—		—		—		—		850,000		850,000
Other obligations:
Operating leases, net		26,516		20,757		6,866		12,936		8,795		75,870
Software licenses and other		1,402		943		580		—		—		2,925
Derivative obligations (b)		26,707		9,746		—		—		—		36,453
Transportation and gathering commitments (c)		837,792		818,569		782,130		1,447,231		4,138,532		8,024,254
Divestiture contract obligation (d)		92,593		74,942		62,639		101,745		152,176		484,095
Asset retirement obligation liability (d)		6,689		52		11		—		73,070		79,822
Total contractual obligations (e)	$	1,037,091	$	1,153,346	$	2,094,273	$	2,311,912	$	5,222,573	$	11,819,195

^(a)  Due at termination date of our bank credit facility. Interest paid on our bank credit facility would be approximately $15.8 million each year assuming no change in the interest rate or outstanding balance.

^(b) Derivative obligations represent net liabilities determined in accordance with master netting arrangements for commodity derivatives that were valued as of December 31, 2020. Our derivatives are measured and recorded at fair value and are subject to market and credit risk. The ultimate liquidation value will be dependent upon actual future commodity prices which may differ materially from the inputs used to determine fair valued as of December 31, 2020. See Note 10 to our consolidated financial statements.

^(c) The obligations above represent our minimum financial commitments pursuant to the terms of these contracts. Our actual expenditures may exceed these minimum commitments.

^(d)  The amounts above represent the discounted values. There are inherent uncertainties surrounding the obligations and the actual amount and timing may differ from our estimates. See Note 9 and Note 15 to our consolidated financial statements.

^(e)  This table excludes the liability for the deferred compensation plans since these obligations will be funded with existing plan assets and does not include obligations to taxing authorities.

In addition to the amounts included in the above table, we have entered into an additional agreement which is contingent on certain pipeline modifications and/or construction for natural gas volumes of 25,000 mcf per day and is expected to begin in 2022 with a six-year term.

Delivery Commitments

We have various volume delivery commitments that are related to our Marcellus Shale properties. We expect to be able to fulfill our contractual obligations from our own production; however, we may purchase third-party volumes to satisfy our commitments or pay demand fees for commitment shortfalls, should they occur. As of December 31, 2020, our delivery commitments through 2031 were as follows:

Year Ending                      December 31,	Natural Gas (mmbtu per day)		Ethane and Propane (bbls per day)
2021		476,877	35,000
2022		477,679	35,000
2023		292,423	35,000
2024		211,216	35,000
2025		170,000	35,000
2026		158,301	35,000
2027		100,000	35,000
2028		100,000	35,000
2029		100,000	20,000
2030-2031		—	20,000

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In addition to the amounts included in the above table, we have contracted with a pipeline company through 2035 to deliver ethane production volumes from our Marcellus Shale wells. These agreements and related fees, which are contingent upon facility construction and/or modification, are for 3,000 bbls per day starting in 2021 and increasing to 18,000 bbls per day in 2027 and to 25,000 bbls per day in 2029 through 2033 and declining to 10,000 bbls per day for the remainder of the term.

Other

We lease acreage that is generally subject to lease expiration if initial wells are not drilled within a specified period, generally between three and five years. We do not expect to lose significant lease acreage because of failure to drill due to inadequate capital, equipment or personnel. However, based on our evaluation of prospective economics, including the cost of infrastructure to connect production, we have allowed acreage to expire and will allow additional acreage to expire in the future. To date, our expenditures to comply with environmental or safety regulations have not been a significant component of our cost structure and are not expected to be significant in the future. However, new regulations, enforcement policies, claims for damages, or other events could result in significant future costs.

Interest Rates

At December 31, 2020, we had $3.1 billion of debt outstanding. Of this amount, $2.4 billion bears interest at fixed rates averaging 6.5%. Bank debt totaling $702.0 million bears interest at floating rates, which averaged 2.3% at year-end 2020. The 30-day LIBOR rate on December 31, 2020 was 0.1%. A 1% increase in short-term interest rates on the floating-rate debt outstanding at December 31, 2020 would cost us approximately $7.0 million in additional annual interest expense.

Off-Balance Sheet Arrangements

We do not currently utilize any off-balance sheet arrangements with unconsolidated entities to enhance our liquidity or capital resources position. However, as is customary in the natural gas and oil industry, we have various contractual work commitments which are described above under cash contractual obligations.

Inflation and Changes in Prices

Our revenues, the value of our assets and our ability to obtain bank loans or additional capital on attractive terms have been and will continue to be affected by changes in natural gas, NGLs and oil prices and the costs to produce our reserves. Natural gas, NGLs and oil prices are subject to significant fluctuations that are beyond our ability to control or predict. Although certain of our costs and expenses are affected by general inflation, inflation does not normally have a significant effect on our business. We expect costs in 2021 to continue to be a function of supply and demand. Natural gas, NGLs and oil prices have remained volatile and unpredictable. However, we continue to focus on improving our cost structure.

Management’s Discussion of Critical Accounting Estimates

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of our financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at year-end and the reported amounts of revenues and expenses during the year. Accounting estimates are considered to be critical if (1) the nature of the estimates and assumptions is material due to the levels of subjectivity and judgment necessary to account for highly uncertain matters or the susceptibility of such matters to changes; and (2) the impact of the estimates and assumptions on financial condition or operating performance is material. Actual results could differ from the estimates and assumptions used.

Estimated Quantities of Net Reserves

We use the successful efforts method of accounting for natural gas and oil producing activities as opposed to the alternate acceptable full cost method. We believe that net assets and net income are more conservatively measured under the successful efforts method of accounting than under the full cost method, particularly during periods of active exploration. One difference between the successful efforts method of accounting and the full cost method is that under the successful efforts method, all exploratory dry holes and geological and geophysical costs are charged against earnings during the periods they occur; whereas, under the full cost method of accounting, such costs are capitalized as assets, pooled with the costs of successful wells and charged against earnings of future periods as a component of depletion expense. Under the successful efforts method of accounting, successful exploration drilling costs and all development costs are capitalized and these costs are systematically charged to expense using the units of production method based on proved developed natural gas and oil reserves as estimated by our engineers and audited by independent engineers. Costs incurred for exploratory wells that find reserves that cannot yet be classified as proved are capitalized on our balance sheet if (1) the well has found a sufficient quantity of reserves to justify its completion as a producing well and (2) we are making sufficient progress assessing the reserves and the economic and operating viability of the project. Proven property leasehold costs are amortized to expense using the units of production method based on total proved reserves. Properties are assessed for impairment as circumstances warrant (at least annually) and impairments to value are charged to expense. The successful efforts method inherently relies upon the estimation of proved reserves, which includes proved developed and proved undeveloped volumes.

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Proved reserves are defined by the SEC as those volumes of natural gas, NGLs, condensate and crude oil that geological and engineering data demonstrate with reasonable certainty are recoverable in future years from known reservoirs under existing economic and operating conditions. Proved developed reserves are volumes expected to be recovered through existing wells with existing equipment and operating methods. Proved undeveloped reserves include reserves for which a development plan has been adopted indicating each location is scheduled to be drilled within five years from the date it was booked as proved reserves, unless specific circumstances justify a longer time. Although our engineers are knowledgeable of and follow the guidelines for reserves established by the SEC, the estimation of reserves requires engineers to make a significant number of assumptions based on professional judgment. Reserve estimates are updated at least annually and consider recent production levels and other technical information. Estimated reserves are often subject to future revisions, which could be substantial, based on the availability of additional information, including reservoir performance, new geological and geophysical data, additional drilling, technological advancements, price and cost changes and other economic factors. Changes in natural gas, NGLs and oil prices can lead to a decision to start up or shut in production, which can lead to revisions to reserve quantities. Reserve revisions in turn cause adjustments in our depletion rates. We cannot predict what reserve revisions may be required in future periods. Reserve estimates are reviewed and approved by our Senior Vice President of Reservoir Engineering and Economics, who reports directly to our President and Chief Executive Officer. To further ensure the reliability of our reserve estimates, we engage independent petroleum consultants to audit our estimates of proved reserves. Estimates prepared by third parties may be higher or lower than those included herein. Independent petroleum consultants audited approximately 97% of our reserves in 2020 compared to 90% in 2019. Historical variances between our reserve estimates and the aggregate estimates of our consultants have been less than 5%. The reserves included in this report are those reserves estimated by our petroleum engineering staff. For additional discussion, see Items 1 & 2. Business and Properties – Proved Reserves.

Reserves are based on the weighted average of commodity prices during the 12-month period, using the closing prices on the first day of each month, as defined by the SEC. When determining the December 31, 2020 proved reserves for each property, benchmark prices are adjusted using price differentials that account for property-specific quality and location differences. If prices in the future average below prices used to determine reserves at December 31, 2020, it could have an adverse effect on our estimates of proved reserves. It is difficult to estimate the magnitude of any potential price change and the effect on proved reserves due to numerous factors (including commodity prices and performance revisions).

Depletion rates are determined based on reserve quantity estimates and the capitalized costs of producing properties. As the estimated reserves are adjusted, the depletion expense for a property will change, assuming no change in production volumes or the capitalized costs. While total depletion expense for the life of a property is limited to the property’s total cost, proved reserve revisions result in a change in the timing of when depletion expense is recognized. Downward revisions of proved reserves may result in an acceleration of depletion expense, while upward revisions tend to lower the rate of depletion expense recognition. Based on proved reserves at December 31, 2020, we estimate that a 1% change in proved reserves would increase or decrease 2021 depletion expense by approximately $4.0 million (based on current production estimates). Estimated reserves are used as the basis for calculating the expected future cash flows from property asset groups, which are used to determine whether that property may be impaired. Reserves are also used to estimate the supplemental disclosure of the standardized measure of discounted future net cash flows relating to natural gas and oil producing activities and reserve quantities in Note 19 to our consolidated financial statements. Changes in the estimated reserves are considered a change in estimate for accounting purposes and are reflected on a prospective basis. It should not be assumed that the standardized measure is the current market value of our estimated proved reserves.

Fair Value Estimates

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There are three approaches for measuring the fair value of assets and liabilities:  the market approach, the income approach and the cost approach, each of which includes multiple valuation techniques. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to measure fair value by converting future amounts, such as cash flows or earnings, into a single present value, or range of present values, using current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace the service capacity of an asset. This is often referred to as current replacement cost. The cost approach assumes that the fair value would not exceed what it would cost a market participant to acquire or construct a substitute asset of comparable utility, adjusted for obsolescence.

The fair value accounting standards do not prescribe which valuation technique should be used when measuring fair value and do not prioritize among the techniques. These standards establish a fair value hierarchy that prioritizes the inputs used in applying the various valuation techniques. Inputs broadly refer to the assumptions that market participants use to make pricing decisions, including assumptions about risk. Level 1 inputs are given the highest priority in the fair value hierarchy, while Level 3 inputs are given the lowest priority. The three levels of the fair value hierarchy are as follows:

• Level 1-Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of the measurement date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.

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• Level 2-Observable market-based inputs or unobservable inputs that are corroborated by market data. These are inputs other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the measurement date.

• Level 3-Unobservable inputs for which there is little, if any, market activity for the asset or liability being measured. These inputs reflect management’s best estimates of the assumptions market participants would use in determining fair value.

Valuation techniques that maximize the use of observable inputs are favored. Assets and liabilities are classified in their entirety based on the lowest priority level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement of assets and liabilities within the levels of the fair value hierarchy. See Note 11 to the consolidated financial statements for disclosures regarding our fair value measurements.

Significant uses of fair value measurement include:

• impairment assessments of long-lived assets,

• recorded value of derivative instruments and

• recorded retained liabilities.

The need to test long-lived assets for impairment can be based on several indicators, including a significant reduction in commodity prices, reductions to our capital budget, unfavorable adjustments to reserves, significant changes in the expected timing of production, other changes to contracts or changes in the regulatory environment in which a property is located.

Exit Cost Estimates

Our consolidated balance sheet includes accrued exit cost liabilities primarily related to retained gathering, processing and transportation contracts in Louisiana. Inherent in the fair value calculation of these exit costs associated with our North Louisiana divestiture are numerous assumptions and judgments including the ultimate amounts to be paid, the credit-adjusted discount rates, the development plans of the buyer and our probability weighted forecast of those drilling plans, market conditions and the ultimate usage by the buyer of each facility included in the agreement. A significant portion of this obligation is a gas processing agreement that includes a deficiency payment if the minimum volume commitment is not met and we must assess the likelihood and amount of production volumes flowing to this facility. In addition, our agreement includes additional transportation agreements that are based on contractual rates applied to a minimum volume usage. We have made significant judgments and estimates regarding the timing and amount of these liabilities. We based our initial fair value estimate on assumptions we believe to be reasonable and likely to occur. An estimate of the sensitivity to changes in assumptions in our undiscounted cash flow calculations is not practical, given the numerous assumptions that can affect our estimates. For example, changes in our assumptions, such as a reduction in utilization of processing capacity, could have resulted in a higher exit cost accrual. We continue to regularly monitor our estimates and in the future may be required to adjust our estimates based on facts and circumstances. See Note 11 and Note 16 to our consolidated financial statements for a further discussion of these costs.

Impairment Assessments of Natural Gas and Oil Properties

Long-lived assets in use are assessed for impairment whenever changes in facts and circumstances indicate that the carrying value of the assets may not be recoverable. For purposes of an impairment evaluation, long-lived assets must be grouped at the lowest level for which independent cash flows can be identified, which generally is field-by-field, in certain instances, by logical grouping of assets if there is significant shared infrastructure or contractual terms that cause economic interdependency amongst separate, discrete fields. If the sum of the undiscounted estimated cash flows from the use of the asset group and its eventual disposition is less than the carrying value of an asset group, the carrying value is written down to the estimated fair value. During 2019, a change in business strategy employed by management in North Louisiana and the possibility of a divestiture of these assets triggered an assessment of these long-lived assets for impairment. We estimated the fair values using a discounted net cash flow model or an income approach and we recognized an impairment. As of December 31, 2020, our estimated undiscounted cash flows relating to our remaining long-lived assets significantly exceeded their carrying values. See Note 11 to the consolidated financial statements for discussion of impairments recorded in the last three years and the related fair value measurements.

Fair value calculated for the purpose of testing our natural gas and oil properties for impairment is estimated using the present value of expected future cash flows method and comparative market prices when appropriate. Significant judgment is involved in performing these fair value estimates since the results are based on forecasted assumptions. Significant assumptions include:

• Future crude oil and condensate, NGLs and natural gas prices. Our estimates of future prices are based on market information including published futures prices. Although these commodity prices may experience extreme volatility in any given year, we believe long-term industry prices are driven by market supply and demand. The prices we use in our fair value estimates are consistent with those used in our planning and capital investment reviews. There has been

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significant volatility in crude oil and condensate, NGLs and natural gas prices and estimates of such future prices are inherently imprecise. See Item 1A. Risk Factors for further discussion on commodity prices.

• Estimated quantities of crude oil and condensate, NGLs and natural gas. Such quantities are based on risk adjusted proved and probable reserves and resources such that the combined volumes represent the most likely expectation of recovery. See Item 1A. Risk Factors for further discussion on reserves.

• Expected timing of production. Production forecasts are the outcome of engineering studies which estimate reserves, as well as expected capital programs. The actual timing of the production could be different than the projection. Cash flows realized later in the projection period are less valuable than those realized earlier due to the time value of money. The expected timing of production that we use in our fair value estimates is consistent with that used in our planning and capital investment reviews.

• Discount rate commensurate with the risks involved. We apply a discount rate to our expected cash flows based on a variety of factors, including market and economic conditions, operational risk, regulatory risk and political risk. A higher discount rate decreases the net present value of cash flows.

• Future capital requirements. Our estimates of future capital requirements consider the assumptions utilized by management for internal planning and budgeting.

We base our fair value estimates on projected financial information which we believe to be reasonably likely to occur. An estimate of the sensitivity to changes in assumptions in our undiscounted cash flow calculations is not practicable, given the numerous assumptions (e.g. reserves, pace and timing of development plans, commodity prices, capital expenditures, operating costs, drilling and development costs, inflation and discount rates) that can materially affect our estimates. Unfavorable adjustments to some of the above listed assumptions would likely be offset by favorable adjustments in other assumptions. For example, the impact of sustained reduced commodity prices on future undiscounted cash flows would likely be partially offset by lower costs.

Derivative Instruments

All derivative instruments are recorded on our consolidated balance sheets as either an asset or a liability measured at its fair value. Fair value measurements for all of our derivatives are based upon, among other things, option pricing models, futures, volatility, time to maturity and credit risk and are discussed in Note 11 to our consolidated financial statements. We regularly validate our fair value measurements through the review of counterparty statements, by corroborating original sources of inputs and monitoring changes in valuation methods and assumptions. Additional information about derivatives and their valuation may be found in Item 7A. Quantitative and Qualitative Disclosures about Market Risk.

Asset Retirement Obligations

We have significant obligations to remove tangible equipment and restore the surface at the end of natural gas and oil production operations. Removal and restoration obligations are primarily associated with plugging and abandoning wells. Estimating the future asset removal costs is difficult and requires us to make estimates and judgments because most of the removal obligations are many years in the future and contracts and regulations often have vague descriptions of what constitutes removal. Asset removal technologies and costs are constantly changing, as are regulatory, political, environmental, safety and public relations considerations.

Inherent in the fair value calculation are numerous assumptions and judgments including the ultimate retirement costs, inflation factors, credit-adjusted discount rates, timing of retirement, and changes in the legal, regulatory, environmental and political environments. To the extent future revisions to these assumptions impact the present value of the existing asset retirement obligation (“ARO”), a corresponding adjustment is made to the natural gas and oil property balance. For example, as we analyze actual plugging and abandonment information, we may revise our estimate of current costs, the assumed annual inflation of the costs and/or the assumed productive lives of our wells. See Note 9 to the consolidated financial statements for disclosures regarding our asset retirement obligation estimates. In addition, increases in the discounted ARO resulting from the passage of time are reflected as accretion expense, a component of depletion, depreciation and amortization in the accompanying consolidated statements of operations. Because of the subjectivity of assumptions and the relatively long lives of most of our wells, the costs to ultimately retire our wells may vary significantly from prior estimates. An estimate of the sensitivity to operating results of other assumptions that had been used in recording these liabilities is not practical because of the number of obligations that must be assessed, the number of underlying assumptions and the wide range of possible assumptions.

Income Taxes

We are subject to income and other taxes in all areas in which we operate. For financial reporting purposes, we provide taxes at rates applicable for the appropriate tax jurisdictions. Estimates of amounts of income tax to be recorded involve interpretation of complex tax laws.

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Our consolidated balance sheets include deferred tax assets. Deferred tax assets arise when expenses are recognized in the financial statements before they are recognized in the tax returns or when income items are recognized in the tax returns before they are recognized in the financial statements. Deferred tax assets also arise when operating losses or tax credits are available to offset tax payments due in future years. Ultimately, realization of a deferred tax asset depends on the existence of sufficient taxable income within the future periods to absorb future deductible temporary differences, loss carryforwards or credits.

In assessing the potential realization of deferred tax assets, management must consider whether it is more likely than not (a likelihood of more than 50%) that some portion or all of the deferred tax assets will not be realized. Management considers all available evidence (both positive and negative) in determining whether a valuation allowance is required. Such evidence includes the scheduled reversal of deferred tax liabilities, projected future taxable income and tax planning strategies in making this assessment and judgment is required in considering the relative weight of negative and positive evidence. We continue to monitor facts and circumstances in the reassessment of the likelihood that operating loss carryforwards, credits and other deferred tax assets will be utilized prior to their expiration. As a result, we may determine that an additional deferred tax asset valuation allowance should be established. In determining whether a valuation allowance is required for our deferred tax asset balances, we consider, among other factors, current financial position, results of operations, projected future taxable income, tax planning strategies and new legislation. Significant judgment is involved in this determination as we are required to make assumptions about future commodity prices, projected production, development activities, profitability of future business strategies and forecasted economics in the oil and gas industry. Additionally, changes in the effective tax rate resulting from changes in tax law and our level of earnings may limit utilization of deferred tax assets and will affect valuation of deferred tax balances in the future. Changes in judgment regarding future realization of deferred tax assets may result in a reversal of all or a portion of the valuation allowance. In the period that determination is made, our net income will benefit from a lower effective tax rate.

We believe our net deferred tax assets, after valuation allowances, will ultimately be realized. During 2020, we increased our valuation allowances against our state net operating loss carryforwards, basis differences and credits from $158.3 million as of December 31, 2019 to $226.5 million as of December 31, 2020. The federal valuation allowances increased from $32.5 million as of December 31, 2019 to $152.5 million as of December 31, 2020. See Note 6 to our consolidated financial statements for further information concerning our income taxes.

An estimate of the sensitivity to changes in our assumptions resulting in future income calculations is not practical, given the numerous assumptions that can materially affect our estimates. Unfavorable adjustments to some of the assumptions would likely be offset by favorable adjustments in other assumptions. For example, the impact of sustained reduced commodity prices on future taxable income would likely be partially offset by lower capital expenditures.

We may be challenged by taxing authorities over the amount and/or timing of recognition of revenues and deductions in our various income tax returns. Although we believe that we have adequately provided for all taxes, income or losses could occur in the future due to changes in estimates or resolution of outstanding tax matters.

Contingent Liabilities

A provision for legal, environmental and other contingent matters is charged to expense when the loss is probable and the cost or range of cost can be reasonably estimated. Judgment is often required to determine when expenses should be recorded for legal, environmental and contingent matters. In addition, we often must estimate the amount of such losses. In many cases, our judgment is based on the input of our legal advisors and on the interpretation of laws and regulations, which can be interpreted differently by regulators and/or the courts. Actual costs can differ from estimates for many reasons. We monitor known and potential legal, environmental and other contingent matters and make our best estimate of when to record losses for these matters based on available information. Although we continue to monitor all contingencies closely, particularly our outstanding litigation, we currently have no material accruals for contingent liabilities. We generally record losses related to these type of contingencies as general and administrative expense in the consolidated statements of operations.

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Stock-based Compensation Arrangements

The fair value of performance-based share awards (where the performance condition is based on market conditions) is estimated on the date of grant using a Monte Carlo simulation method. A Monte Carlo simulation model utilizes multiple input variables that determine the probability of satisfying the market condition stipulated in the award grant. The fair value of restricted stock awards and performance-based awards where the performance condition is based on internal performance metrics is determined based on the fair market value of our common stock on the date of grant.

We recognize stock-based compensation expense on a straight-line basis over the requisite service period for the entire award. The expense we recognize is net of estimated forfeitures. We estimate our forfeiture rate based on prior experience and adjust it as circumstances warrant. See Note 12 to our consolidated financial statements for more information.

Accounting Standards Not Yet Adopted

None that are expected to have a material impact.

ITEM 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The primary objective of the following information is to provide forward-looking quantitative and qualitative information about our potential exposure to market risks. The term “market risk” refers to the risk of loss arising from adverse changes in natural gas, NGLs and oil prices and interest rates. The disclosures are not meant to be precise indicators of expected future losses, but rather indicators of reasonably possible losses. This forward-looking information provides indicators of how we view and manage our ongoing market-risk exposure. All of our market-risk sensitive instruments were entered into for purposes other than trading. All accounts are U.S. dollar denominated.

Market Risk

We are exposed to market risks related to the volatility of natural gas, NGLs and oil prices as the volatility of these prices continues to impact our industry. We expect commodity prices to remain volatile and unpredictable in the future. We employ various strategies, including the use of commodity derivative instruments, to manage the risks related to these price fluctuations. These derivative instruments apply to a varying portion of our production and provide only partial price protection. These arrangements limit the benefit to us of increases in prices but offer protection in the event of price declines. Further, if our counterparties defaulted, this protection might be limited as we might not receive the benefits of the derivatives. We are at risk for changes in the fair value of all of our derivative instruments; however, such risk should be mitigated by price changes related to the underlying commodity transaction. While the use of derivative instruments could materially affect our results of operations in a particular quarter or annual period, we believe that the use of these instruments will not have a material adverse effect on our financial position or liquidity. Realized prices are primarily driven by worldwide prices for oil and spot market prices for North American natural gas production. Natural gas prices affect us more than oil prices because approximately 65% of our December 31, 2020 proved reserves were natural gas compared to 2% of proved reserves were oil. We are also exposed to market risks related to changes in interest rates. These risks did not change materially from December 31, 2019 to December 31, 2020.

In our Marcellus Shale operations, propane is a large product component of our NGLs production and we believe NGLs prices are somewhat seasonal. Therefore, the percentage of NGLs prices to NYMEX WTI (or West Texas Intermediate) will vary due to product components, seasonality and geographic supply and demand. We sell NGLs in several regional and international markets. If we are not able to sell or store NGLs, we may be required to curtail production or shift our drilling activities to dry gas areas.

Currently, the Appalachian region has limited local demand and infrastructure to accommodate ethane. We have agreements wherein we have contracted to either sell or transport ethane from our Marcellus Shale area. If we are not able to sell ethane under at least one of our agreements, we may be required to curtail production which will adversely affect our revenues and cash flow. However, as we have done in the past, we also may be able to purchase or divert natural gas to blend with our rich residue gas.

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Commodity Price Risk

We use commodity-based derivative contracts to manage exposures to commodity price fluctuations. We do not enter into these arrangements for speculative or trading purposes. At times, certain of our derivatives are swaps where we receive a fixed price for our production and pay market prices to the counterparty. Our derivatives program may also include collars, which establish a minimum floor price and a predetermined ceiling price. We have also entered into combined natural gas derivative instruments containing a fixed price swap and a sold option to extend the term or expand the volume (which we refer to as a swaption). The swap price is a fixed price determined at the time of the swaption contract. If the option is exercised, the contract will become a swap treated consistently with our fixed-price swaps. Our program may also include a three-way collar which is a combination of three options: a sold call, a purchased put and a sold put. The sold call establishes the ceiling price while the purchased put establishes the floor price unless the market price for the commodity falls below the sold put stock price. At December 31, 2020, our derivatives program includes swaps, swaptions, collars and calls. These contracts expire monthly through December 2021. Their fair value, represented by the estimated amount that would be realized upon immediate liquidation as of December 31, 2020, approximated a net derivative liability of $18.0 million compared to a net derivative asset of $126.7 million at December 31, 2019. This change is primarily related to the settlements of derivative contracts during 2020 and to the natural gas, NGLs and oil futures prices as of December 31, 2020 in relation to the new commodity derivative contracts we entered into during 2020 for 2021. At December 31, 2020, the following commodity derivative contracts were outstanding, excluding our basis and freight swaps and divestiture contingent consideration, which are separately discussed below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price						Fair Market Value
			Swap		Sold Put	Floor	Ceiling		(in thousands)
Natural Gas (1)
2021	Swaps	550,000 Mmbtu/day	$	2.77				$	23,439
January-October, 2021	Collars	342,237 Mmbtu/day				$ 2.51	$ 3.00	$	7,016
2021	Three-way Collars	240,000 Mmbtu/day			$ 1.99	$ 2.33	$ 2.60	$	(17,818	)
Crude Oil
2021	Swaps	3,479 bbls/day	$	46.11				$	(3,006	)
NGLs (C3-Propane)
January-June 2021	Swaps	6,972 bbls/day	$	0.55/gallon				$	(8,243	)
January-June 2021	Collars	5,000 bbls/day				$ 0.50/gallon	$ 0.60/gallon	$	(3,086	)
NGLs (NC4-Normal Butane)
January-March 2021	Swaps	2,000 bbls/day	$	0.71/gallon				$	(651	)
January-March 2021	Collars	1,000 bbls/day				$ 0.60/gallon	$0.70/gallon	$	(401	)
NGLs (C5-Natural Gasoline)
January-September 2021	Swaps	2,821 bbls/day	$	0.92/gallon				$	(4,897	)
January-March 2021	Calls	1,000 bbls/day	$	0.95/gallon				$	(546	)

⁽¹⁾ We also sold natural gas call swaptions of 280,000 Mmbtu/day for 2022 at a weighted average price of $2.81 per Mmbtu. The fair value of these swaptions at December 31, 2020 was a net derivative liability of $9.8 million.

Other Commodity Risk

We are impacted by basis risk as natural gas transaction prices are frequently based on industry reference prices that may vary from prices experienced in local markets. If commodity price changes in one region are not reflected in other regions, derivative commodity instruments may no longer provide the expected hedge, resulting in increased basis risk. In addition to the derivative contracts above, we have entered into natural gas basis swap agreements. The price we receive for our natural gas production can be more or less than the NYMEX price because of adjustments for delivery location (“basis”), relative quality and other factors; therefore, we have entered into basis swap agreements that effectively lock in the basis adjustments. The fair value of the natural gas basis swaps, which expire monthly through December 2024, was a net derivative asset of $3.7 million at December 31, 2020 and the volumes are for 180,510,000 Mmbtu.

As of December 31, 2020, we also had propane spread swap contracts which lock in the differential between Mont Belvieu and international propane indices. These contracts settle monthly in 2021 and the fair value of these contracts was a net derivative asset of $794,000 on December 31, 2020.

In connection with our international propane swaps, at December 31, 2020, we had freight swap contracts which lock in the freight rate for a specific trade route on the Baltic Exchange. These contracts settle monthly and cover 5,000 metric tons in second quarter 2021 and 10,000 metric tons for the remainder of the year with a fair value net derivative asset of $1.1 million on December 31, 2020.

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We have the right to receive contingent consideration in conjunction with the sale our North Louisiana assets of up to $90.0 million based on future realization of natural gas and oil prices based on published indexes and realized NGLs prices of the buyer for the years 2021, 2022 and 2023. The fair value of this instrument on December 31, 2020 was a derivative asset of $16.0 million.

Commodity Sensitivity Analysis

The following table shows the fair value of our derivative contracts and the hypothetical change in fair value that would result from a 10% and a 25% change in commodity prices at December 31, 2020. We remain at risk for possible changes in the market value of commodity derivative instruments; however, such risks should be mitigated by price changes in the underlying physical commodity (in thousands):

				Hypothetical Change In Fair Value
				Increase in Commodity Price of						Decrease in Commodity Price of
	Fair Value			10%			25%			10%			25%
Swaps	$	6,642		$	(66,854	)	$	(167,136	)	$	66,854		$	167,136
Calls		(546	)		(382	)		(982	)		333			529
Collars		3,529			(20,466	)		(53,988	)		22,409			58,371
Three-way collars		(17,818	)		(17,369	)		(47,988	)		15,152			33,871
Basis swaps		4,491			6,411			16,028			(6,411	)		(16,028	)
Swaptions		(9,803	)		(11,330	)		(38,694	)		6,046			9,201
Freight swaps		1,104			464			1,161			(464	)		(1,161	)
Divestiture contingent consideration		15,960			5,850			14,650			(5,200	)		(11,000	)

Counterparty Risk

Our commodity-based contracts expose us to the credit risk of non-performance by the counterparty to the contracts. Our exposure is diversified among major investment grade financial institutions and commodity traders and we have master netting agreements with the majority of our counterparties that provide for offsetting payables against receivables from separate derivative contracts. Our derivative contracts are with multiple counterparties to minimize our exposure to any individual counterparty. At December 31, 2020, our derivative counterparties include twenty financial institutions, of which all but five are secured lenders in our bank credit facility. Counterparty credit risk is considered when determining the fair value of our derivative contracts. While counterparties are major investment grade financial institutions and large commodity traders, the fair value of our derivative contracts have been adjusted to account for the risk of non-performance by certain of our counterparties, which was immaterial. Our propane sales from the Marcus Hook facility near Philadelphia are short-term and are to a single purchaser. Ethane sales from Marcus Hook are to a single international customer bearing a credit rating similar to Range.

Interest Rate Risk

We are exposed to interest rate risk on our bank debt. We attempt to balance variable rate debt, fixed rate debt and debt maturities to manage interest costs, interest rate volatility and financing risk. This is accomplished through a mix of fixed rate publicly traded debt and variable rate bank debt. At December 31, 2020, we had $3.1 billion of debt outstanding. Of this amount, $2.4 billion bears interest at a fixed rate averaging 6.5%. Bank debt totaling $702.0 million bears interest at floating rates, which was 2.3% at December 31, 2020. On December 31, 2020, the 30-day LIBOR rate was 0.1%. A 1% increase in short-term interest rates on the floating-rate debt outstanding at December 31, 2020 would cost us approximately $7.0 million in additional annual interest expense. Our sensitivity to interest rate movements and corresponding changes in the fair value of our fixed rate debt affects our results of operations and cash flows only when we elect to repurchase or otherwise retire fixed-rate debt at prices different than carrying value. See Note 8 to our consolidated financial statements for more information about our new senior notes.

62

The fair value of our senior and subordinated debt is based on year-end December 2020 quoted market prices. The following table presents information on these fair values (in thousands):

	Carrying Value		Fair Value
Fixed rate debt:
Senior Subordinated Notes due 2021	$	19,896	$	19,589
(The interest rate is fixed at a rate of 5.75%)
Senior Subordinated Notes due 2022		9,730		9,247
(The interest rate is fixed at a rate of 5.00%)
Senior Subordinated Notes due 2023		7,712		6,604
(The interest rate is fixed at a rate of 5.00%)
Senior Notes due 2021		25,496		25,474
(The interest rate is fixed at a rate of 5.75%)
Senior Notes due 2022		169,589		170,128
(The interest rate is fixed at a rate of 5.00%)
Senior Notes due 2022		49,018		48,961
(The interest rate is fixed at a rate of 5.875%)
Senior Notes due 2023		532,335		521,699
(The interest rate is fixed at a rate of 5.00%)
Senior Notes due 2025		750,000		707,918
(The interest rate is fixed at a rate of 4.875%)
Senior Notes due 2025		850,000		888,208
(The interest rate is fixed at a rate of 9.25%)
	$	2,413,776	$	2,397,828

63

Item 8. financial statements and supplementary data

RANGE RESOURCES CORPORATION

INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

	Page Number
Management’s Report on Internal Control Over Financial Reporting	F–2
Reports of Independent Registered Public Accounting Firm	F–3
Consolidated Balance Sheets as of December 31, 2020 and 2019	F–6
Consolidated Statements of Operations for the Years Ended December 31, 2020, 2019 and 2018	F–7
Consolidated Statements of Comprehensive Loss for the Years Ended December 31, 2020, 2019 and 2018	F–8
Consolidated Statements of Cash Flows for the Years Ended December 31, 2020, 2019 and 2018	F–9
Consolidated Statements of Stockholders’ Equity for the Years Ended December 31, 2020, 2019 and 2018	F–10
Notes to Consolidated Financial Statements	F–11

F-1

Management’s Report on Internal Control over Financial Reporting

To the Stockholders of Range Resources Corporation:

Management is responsible for establishing and maintaining an adequate system of internal control over financial reporting (as defined in Rule 13(a)-15(f) under the Securities Exchange Act of 1934, as amended). Our internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and presentation of consolidated financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements and even when determined to be effective, these controls can only provide reasonable assurance with respect to financial statement preparation and presentation. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that the internal controls may become inadequate because of changes in conditions or because the degree of compliance with the policies or procedures may deteriorate.

Management assessed the effectiveness of our internal control over financial reporting as of December 31, 2020. In making this assessment, which was conducted under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control – Integrated Framework (2013). As part of our annual assessment, management has concluded that we did not design and maintain effective internal controls over the completeness and accuracy of the accounting for changes in the tax law. Specifically, we did not design controls to adequately assess certain new tax laws and accurately apply any necessary modifications to our calculations. This resulted in a material error in our interim financial information as presented in and filed with each of our Quarterly Reports on Form 10-Q during 2020.

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is reasonable possibility that a material misstatement of the annual or interim financial statements will not be prevented or detected on a timely basis. We have determined that the gap in our design of controls to adequately review the assessment of certain new tax laws and accurately apply any necessary modifications to our calculations is a material weakness.

As discussed in Note 18 to our consolidated financial statements, during the interim reporting periods of 2020, we did not record the appropriate quarterly deferred income tax expense or benefit and associated impacts to deferred tax liabilities which resulted in an error in our interim financial statements. The resulting impacts to our previously recorded amounts are described in Note 18.

Based upon our current assessment, which considered the material weakness described above, our management concluded that our internal control over financial reporting was not effective at December 31, 2020.  

Management’s Plan for Remediation of the Material Weakness

In response to the material weakness described above, with the oversight of the Audit Committee of our Board of Directors, management has corrected the error in its interim financial statements. Management is currently evaluating remediation activities related to our income tax processes that will include, but are not limited to the following (i) enhancing and developing a more comprehensive review process and monitoring controls related to new tax laws or the modifications of existing tax laws and (ii) continuing to provide income tax training and development to tax personnel.

The remediation efforts are intended to both address the identified material weakness and to enhance our overall financial control environment and will be subject to ongoing senior management review, as well as Audit Committee oversight. We plan to complete this remediation process as quickly as possible. Management is committed to continuous improvement of our internal control over financial reporting and will continue to diligently review our internal control over financial reporting.

Ernst and Young LLP, our independent registered public accounting firm, audited our financial statements included in this annual report and has issued an attestation report on our internal control over financial reporting as of December 31, 2020. Their report appears on the following page.

By:	/s/  JEFFREY L. VENTURA	By:	/s/  Mark S. scucchi
	Jeffrey L. Ventura		Mark S. Scucchi
	Chief Executive Officer and President		Senior Vice President and Chief Financial Officer

Fort Worth, Texas

February 23, 2021

F-2

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Range Resources Corporation

Opinion on Internal Control Over Financial Reporting

We have audited Range Resources Corporation’s internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control – Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) (the COSO criteria). In our opinion, because of the effect of the material weakness described below on the achievement of the objectives of the control criteria, Range Resources Corporation (the Company) has not maintained effective internal control over financial reporting as of December 31, 2020, based on the COSO criteria.

A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of the company’s annual or interim financial statements will not be prevented or detected on a timely basis. The following material weakness has been identified and included in management’s assessment. Management did not design and maintain effective controls over the completeness and accuracy of accounting for changes in tax law.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated balance sheets of the Company as of December 31, 2020 and 2019, and the related consolidated statements of operations, comprehensive loss, stockholders' equity, and cash flows for each of the three years in the period ended December 31, 2020, and the related notes. This material weakness was considered in determining the nature, timing and extent of audit tests applied in our audit of the 2020 consolidated financial statements, and this report does not affect our report dated February 23, 2021 which expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control Over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Fort Worth, Texas

February 23, 2021

F-3

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and the Board of Directors of Range Resources Corporation

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Range Resources Corporation (the Company) as of December 31, 2020 and 2019, the related consolidated statements of operations, comprehensive loss, stockholders' equity and cash flows for each of the three years in the period ended December 31, 2020, and the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2020 and 2019, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2020, in conformity with U.S. generally accepted accounting principles.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2020, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework) and our report dated February 23, 2021 expressed an adverse opinion thereon.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.

F-4

Description of the Matter How We Addressed the Matter in Our Audit

Depletion, depreciation, and amortization of proved natural gas and oil properties At December 31, 2020, the net book value of the Company’s proved natural gas and oil properties totaled $4.8 billion and depletion, depreciation and amortization expense (“DD&A”) was $394 million for the year then ended. As described in Note 2, proved natural gas and oil properties are accounted for under the successful efforts method of accounting. DD&A for proved properties, including other property and equipment such as gathering lines related to natural gas and oil producing activities, is provided using the units of production method based on proved natural gas and oil reserves, as estimated by the Company’s petroleum engineering staff. Proved natural gas and oil reserve estimates are based on geological and engineering evaluations of in-place hydrocarbon volumes. Significant judgment is required by the Company’s petroleum engineering staff in evaluating geological and engineering data when estimating proved natural gas and oil reserves. Estimating reserves also requires the selection of inputs, including natural gas and oil price assumptions, future operating and capital costs assumptions and tax rates by jurisdiction, among others. Because of the complexity involved in estimating natural gas and oil reserves, management used independent petroleum consultants to audit approximately 97% of the proved reserve estimates prepared by the Company’s petroleum engineering staff as of December 31, 2020.   Auditing the Company’s DD&A calculation is especially complex because of the use of the work of the petroleum engineering staff and the independent petroleum consultants and the evaluation of management’s determination of the inputs described above used by the engineers in estimating proved natural gas and oil reserves. We obtained an understanding, evaluated the design and tested the operating effectiveness of the Company’s controls over its process to calculate DD&A, including management’s controls over the completeness and accuracy of the financial data provided to the engineers for use in estimating proved natural gas and oil reserves. Our audit procedures included, among others, evaluating the professional qualifications and objectivity of the individual primarily responsible for overseeing the preparation of the reserve estimates by the petroleum engineering staff and the independent petroleum consultants used to audit the estimates. In addition, in assessing whether we can use the work of the engineers, we evaluated the completeness and accuracy of the financial data and inputs described above used by the engineers in estimating proved natural gas and oil reserves by agreeing them to source documentation and we identified and evaluated corroborative and contrary evidence. For proved undeveloped reserves, we evaluated management’s development plan for compliance with the SEC rule that undrilled locations are scheduled to be drilled within five years, unless specific circumstances justify a longer time, by assessing consistency of the development projections with the Company’s drill plan and the availability of capital relative to the drill plan. We also tested the mathematical accuracy of the DD&A calculations, including comparing the proved natural gas and oil reserve amounts used to the Company’s reserve report.

Description of the Matter How We Addressed the Matter in Our Audit

Divestiture contract obligation As described in Note 16 to the consolidated financial statements, the Company completed the sale of its North Louisiana assets and retained certain gathering, transportation and processing obligations which extend through 2030. The Company recorded an obligation and exit and termination costs of $479.8 million for the estimated fair value of the divestiture contract obligation. Auditing the Company’s valuation of the divestiture contract obligation was complex because of the significant estimation required by management to determine the fair value which is sensitive to the significant underlying assumptions. The Company used a probability weighted discounted cash flow model to determine the fair value of the divestiture contract obligation, including assumptions about future market and economic conditions as well as unobservable assumptions regarding the development plans of the buyer. Significant assumptions used in the Company’s fair value estimate included (i) the credit-adjusted discount rate and (ii) estimates of the timing and amount of future payments under the retained obligation which are based upon future production volumes of the buyer forecasted by the Company’s petroleum engineering staff, the buyer’s usage of processing facilities, and the probability weighted outcomes of future development plans of the buyer. We obtained an understanding, evaluated the design, and tested the operating effectiveness of controls over the Company's process to determine the fair value of the liability. This included controls over management’s review of the significant assumptions underlying the fair value determination, their considerations of the sensitivity of certain assumptions, as well as the completeness and accuracy of the data used in the determination of the fair value. Our audit procedures included, among others, evaluating the significant assumptions and testing the completeness and accuracy of underlying data used in the calculation of the fair value, assessing the consistency of the calculations with underlying contractual terms, identifying corroborative and contrary comparisons to historical experience and performing sensitivity analyses of the significant assumptions to evaluate the change in the fair value estimate that would result from changes in the assumptions and recalculating management’s estimate. We considered the professional qualifications and objectivity of the individual primarily responsible for overseeing the preparation of the reserve estimates used in the valuation by the petroleum engineering staff. We also involved valuation specialists to assist in our evaluation of the credit-adjusted discount rate used to determine the fair value of the liability.

/s/ Ernst & Young LLP

We have served as the Company’s auditor since 2003.

Fort Worth, Texas

February 23, 2021

F-5

RANGE RESOURCES CORPORATION

CONSOLIDATED BALANCE SHEETS

(In thousands, except share data)

	December 31,
	2020			2019
Assets
Current assets:
Cash and cash equivalents	$	458		$	546
Accounts receivable, less allowance for doubtful accounts of $3,004 and $8,784		252,642			272,900
Derivative assets		23,332			136,848
Prepaid and other current assets		13,408			17,508
Total current assets		289,840			427,802
Derivative assets		16,680			706
Natural gas and oil properties, successful efforts method		9,751,114			10,213,737
Accumulated depletion and depreciation		(4,064,305	)		(4,172,702	)
		5,686,809			6,041,035
Other property and equipment		79,878			102,083
Accumulated depreciation and amortization		(75,717	)		(96,708	)
		4,161			5,375
Operating lease right-of-use assets		63,581			62,053
Other assets		75,865			75,432
Total assets	$	6,136,936		$	6,612,403
Liabilities
Current liabilities:
Accounts payable	$	132,421		$	155,341
Asset retirement obligations		6,689			2,393
Accrued liabilities		348,333			356,392
Accrued interest		54,742			39,299
Derivative liabilities		26,707			13,119
Divestiture contract obligation		92,593			—
Current maturities of long-term debt		45,356			—
Total current liabilities		706,841			566,544
Bank debt		693,123			464,319
Senior notes		2,329,745			2,659,844
Senior subordinated notes		17,384			48,774
Deferred tax liabilities		135,267			160,196
Derivative liabilities		9,746			949
Deferred compensation liabilities		81,481			64,070
Operating lease liabilities		43,155			41,068
Asset retirement obligations and other liabilities		91,157			259,151
Divestiture contract obligation		391,502			—
Total liabilities		4,499,401			4,264,915
Commitments and contingencies
Stockholders' Equity
Preferred stock, $1 par 10,000,000 shares authorized, none issued and outstanding		—			—
Common stock, $0.01 par 475,000,000 shares authorized, 256,353,887 issued
at December 31, 2020 and 251,438,936 issued at December 31, 2019		2,563			2,514
Common stock held in treasury, at cost, 10,005,795 shares at December 31, 2020 and 1,808,133
shares at December 31, 2019		(30,132	)		(7,236	)
Additional paid-in capital		5,684,268			5,659,832
Accumulated other comprehensive loss		(479	)		(788	)
Retained deficit		(4,018,685	)		(3,306,834	)
Total stockholders' equity		1,637,535			2,347,488
Total liabilities and stockholders' equity	$	6,136,936		$	6,612,403

The accompanying notes are an integral part of these consolidated financial statements.

F-6

RANGE RESOURCES CORPORATION

CONSOLIDATED STATEMENTS OF operations

(In thousands, except per share data)

	Year Ended December 31,
	2020			2019			2018
Revenues and other income:
Natural gas, NGLs and oil sales	$	1,607,713		$	2,255,425		$	2,851,077
Derivative fair value income (loss)		187,711			226,681			(51,192	)
Brokered natural gas, marketing and other		173,273			345,509			482,760
Total revenues and other income		1,968,697			2,827,615			3,282,645
Costs and expenses:
Direct operating		92,157			136,276			139,531
Transportation, gathering, processing and compression		1,088,490			1,199,297			1,117,816
Production and ad valorem taxes		24,617			37,967			46,149
Brokered natural gas and marketing		188,316			359,892			496,047
Exploration		32,654			36,683			34,117
Abandonment and impairment of unproved properties		19,334			1,235,342			514,994
General and administrative		159,415			181,109			209,812
Exit and termination costs		547,409			9,506			(373	)
Deferred compensation plan		12,541			(15,472	)		(18,631	)
Interest		192,667			194,285			210,209
Gain on early extinguishment of debt		(14,068	)		(5,415	)		—
Depletion, depreciation and amortization		394,330			548,843			635,467
Impairment of proved properties and other assets		78,955			1,095,634			22,614
Impairment of goodwill		—			—			1,641,197
(Gain) loss on the sale of assets		(110,791	)		30,256			10,666
Total costs and expenses		2,706,026			5,044,203			5,059,615
Loss before income taxes		(737,329	)		(2,216,588	)		(1,776,970	)
Income tax (benefit) expense:
Current		(523	)		6,147			—
Deferred		(25,029	)		(506,438	)		(30,489	)
		(25,552	)		(500,291	)		(30,489	)
Net loss	$	(711,777	)	$	(1,716,297	)	$	(1,746,481	)
Net loss per common share:
Basic	$	(2.95	)	$	(6.92	)	$	(7.10	)
Diluted	$	(2.95	)	$	(6.92	)	$	(7.10	)
Weighted average common shares outstanding:
Basic		241,373			247,970			246,171
Diluted		241,373			247,970			246,171

The accompanying notes are an integral part of these consolidated financial statements.

F-7

RANGE RESOURCES CORPORATION

CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS

(In thousands)

	Year Ended December 31,
	2020			2019			2018
Net loss	$	(711,777	)	$	(1,716,297	)	$	(1,746,481	)
Other comprehensive loss:
Postretirement benefits:
Actuarial gain (loss)		39			(532	)		526
Amortization of prior service costs		369			369			369
Income tax (expense) benefit		(99	)		33			(221	)
Total comprehensive loss	$	(711,468	)	$	(1,716,427	)	$	(1,745,807	)

The accompanying notes are an integral part of these consolidated financial statements.

F-8

RANGE RESOURCES CORPORATION

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

	Year Ended December 31,
	2020			2019			2018
Operating activities:
Net loss	$	(711,777	)	$	(1,716,297	)	$	(1,746,481	)
Adjustments to reconcile net loss to net cash provided from
operating activities:
Deferred income tax benefit		(25,029	)		(506,438	)		(30,489	)
Depletion, depreciation and amortization and impairment of proved properties		473,285			1,644,477			658,081
Impairment of goodwill		—			—			1,641,197
Exploration dry hole costs		888			(11	)		4
Abandonment and impairment of unproved properties		19,334			1,235,342			514,994
Derivative fair value (income) loss		(187,711	)		(226,681	)		51,192
Cash settlements on derivative financial instruments		322,629			188,384			(131,522	)
Divestiture contract obligation		499,934			—			—
Allowance for bad debt		400			4,341			(1,000	)
Amortization of deferred financing costs and other		6,919			6,455			2,515
Deferred and stock-based compensation		48,552			24,891			29,757
(Gain) loss on the sale of assets		(110,791	)		30,256			10,666
Gain on early extinguishment of debt		(14,068	)		(5,415	)		—
Changes in working capital:
Accounts receivable		24,539			214,196			(142,381	)
Inventory and other		1,010			4,520			138
Accounts payable		(32,686	)		(60,374	)		(4,274	)
Accrued liabilities and other		(46,748	)		(155,803	)		138,293
Net cash provided from operating activities		268,680			681,843			990,690
Investing activities:
Additions to natural gas and oil properties		(405,617	)		(687,277	)		(960,916	)
Additions to field service assets		(2,873	)		(1,162	)		(1,477	)
Acreage purchases		(26,816	)		(59,986	)		(60,603	)
Proceeds from disposal of assets		246,127			784,937			324,549
Purchases of marketable securities held by the deferred compensation plan		(17,076	)		(19,039	)		(46,177	)
Proceeds from the sales of marketable securities held by the deferred
compensation plan		22,173			22,005			49,190
Net cash (used in) provided from investing activities		(184,082	)		39,478			(695,434	)
Financing activities:
Borrowings on credit facilities		2,076,000			2,311,000			2,070,000
Repayments on credit facilities		(1,851,000	)		(2,777,000	)		(2,338,000	)
Issuance of senior notes		850,000			—			—
Repayment of senior or senior subordinated notes		(1,120,634	)		(195,432	)		—
Dividends paid		—			(20,070	)		(19,940	)
Treasury stock purchases		(22,992	)		(6,908	)		—
Debt issuance costs		(13,608	)		(4,446	)		(8,220	)
Taxes paid for shares withheld		(3,324	)		(3,384	)		(3,183	)
Change in cash overdrafts		176			(25,747	)		(5,563	)
Proceeds from the sales of common stock held by the deferred compensation plan		696			667			9,747
Net cash used in financing activities		(84,686	)		(721,320	)		(295,159	)
(Decrease) increase in cash and cash equivalents		(88	)		1			97
Cash and cash equivalents at beginning of year		546			545			448
Cash and cash equivalents at end of year	$	458		$	546		$	545

The accompanying notes are an integral part of these consolidated financial statements.

F-9

RANGE RESOURCES CORPORATION

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY

(In thousands, except per share data)

														Accumulated
					Common stock									other
	Common stock				held in			Additional paid-			Retained			comprehensive
	Shares		Par value		treasury			in capital			(deficit)/earnings			loss			Total
Balance as of December 31, 2017		248,144	$	2,481	$	(599	)	$	5,577,732		$	195,990		$	(1,332	)	$	5,774,272
Issuance of common stock		1,374		14		—			13,682			—			—			13,696
Issuance of common stock upon    vesting of PSUs		2		—		—			31			(31	)		—			—
Stock-based compensation    expense		—		—		—			37,210			—			—			37,210
Cash dividends paid    ($0.08 per share)		—		—		—			—			(19,940	)		—			(19,940	)
Treasury stock issuance		—		—		208			(208	)		—			—			—
Other comprehensive income		—		—		—			—			—			674			674
Net loss		—		—		—			—			(1,746,481	)		—			(1,746,481	)
Balance as of December 31, 2018		249,520		2,495		(391	)		5,628,447			(1,570,462	)		(658	)		4,059,431
Issuance of common stock		1,919		19		—			323			—			—			342
Issuance of common stock upon    vesting of PSUs		—		—		—			5			(5	)		—			—
Stock-based compensation    expense		—		—		—			31,120			—			—			31,120
Cash dividends paid    ($0.08 per share)		—		—		—			—			(20,070	)		—			(20,070	)
Treasury stock issuance		—		—		63			(63	)		—			—			—
Treasury stock repurchased		—		—		(6,908	)		—			—			—			(6,908	)
Other comprehensive loss		—		—		—			—			—			(130	)		(130	)
Net loss		—		—		—			—			(1,716,297	)		—			(1,716,297	)
Balance as of December 31, 2019		251,439		2,514		(7,236	)		5,659,832			(3,306,834	)		(788	)		2,347,488
Issuance of common stock		4,896		49		—			(942	)		—			—			(893	)
Issuance of common stock upon    vesting of PSUs		19		—		—			74			(74	)		—			—
Stock-based compensation    expense		—		—		—			25,400			—			—			25,400
Treasury stock issuance		—		—		96			(96	)		—			—			—
Treasury stock repurchased		—		—		(22,992	)		—			—			—			(22,992	)
Other comprehensive income		—		—		—			—			—			309			309
Net loss		—		—		—			—			(711,777	)		—			(711,777	)
Balance as of December 31, 2020		256,354	$	2,563	$	(30,132	)	$	5,684,268		$	(4,018,685	)	$	(479	)	$	1,637,535

The accompanying notes are an integral part of these consolidated financial statements.

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RANGE RESOURCES CORPORATION

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(1) Summary of Organization and Nature of Business

Range Resources Corporation (“Range,” “we,” “us,” or “our”) is a Fort Worth, Texas-based independent natural gas, natural gas liquids (“NGLs”), crude oil and condensate company primarily engaged in the exploration, development and acquisition of natural gas and oil properties in the Appalachian region of the United States. Our objective is to build stockholder value through returns focused development of natural gas and oil properties. Range is a Delaware corporation with our common stock listed and traded on the New York Stock Exchange under the symbol “RRC”.

(2) Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements, including the notes, have been prepared in accordance with U.S. GAAP and include the accounts of all of our subsidiaries. All material intercompany balances and transactions have been eliminated. Certain reclassifications have been made to prior period amounts to conform to the current period’s presentation.

Correction of Error in Previously Reported 2020 Interim Financial Statements

In connection with our year-end financial close process and related preparation of our 2020 Annual Report on Form 10-K, a misstatement of deferred income taxes was identified in our previously filed 2020 unaudited interim financial statements. This matter is the result of an error in management’s conclusion regarding the realizability of deferred tax assets resulting from changes to the tax law under the Coronavirus Aid, Relief and Economic Security Act (also known as the CARES Act) and has resulted in a change to deferred tax expense (benefit). For further information, see Note 18.

Use of Estimates

The preparation of financial statements in accordance with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from these estimates and changes in these estimates are recorded when known.

Estimated quantities of natural gas, NGLs, crude oil and condensate reserves is a significant estimate that requires judgment. All of the reserve data included in this Form 10-K are estimates. Reservoir engineering is a subjective process of estimating underground accumulations of natural gas, NGLs, crude oil and condensate. There are numerous uncertainties inherent in estimating quantities of proved natural gas, NGLs, crude oil and condensate reserves. The accuracy of any reserves estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. As a result, reserves estimates may be different from the quantities of natural gas, NGLs and crude oil and condensate that are ultimately recovered. See Note 19 for further detail.

Other items subject to estimates and assumptions include the carrying amounts of property, plant and equipment, asset retirement obligations, valuation of derivative instruments, exit cost liabilities and valuation allowances for deferred income tax assets, among others. Although we believe these estimates are reasonable, actual results could differ from these estimates.

Business Segment Information

We have evaluated how we are organized and managed and have identified only one operating segment, which is the exploration and production of natural gas, NGLs, crude oil and condensate in the United States. We consider our gathering, processing and marketing functions as integral to our natural gas, crude oil and condensate producing activities.

We have a single company-wide management team that administers all properties as a whole rather than by discrete operating segments. We track only basic operational data by area. We do not maintain complete separate financial statement information by area. We measure financial performance as a single enterprise and not on a geographical or area-by-area basis. All of our operating revenues, income from operations and assets are generated in the United States.

Revenue Recognition, Accounts Receivable and Gas Imbalances

Natural gas, NGLs and oil sales revenues are recognized when control of the product is transferred to the customer and collectability is reasonably assured. See below for a more detailed summary of our product types.

Natural Gas and NGLs Sales

Under our gas processing contracts, we deliver natural gas to a midstream processing entity at the wellhead or the inlet of the

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midstream processing entity’s system. The midstream processing entity processes the natural gas and remits proceeds to us for the resulting sales of NGLs and residue gas. In these scenarios, we evaluate whether we are the principal or the agent in the transaction. For those contracts that we have concluded that we are the principal, the ultimate third party is our customer and we recognize revenue on a gross basis, with gathering, compression, processing and transportation fees presented as an expense. Alternatively, for those contracts that we have concluded that we are the agent, the midstream processing entity is our customer and we recognize revenue based on the net amount of the proceeds received from the midstream processing entity.

In certain natural gas processing agreements, we may elect to take our residue gas and/or NGLs in kind at the tailgate of the midstream entity’s processing plant and subsequently market the product on our own. Through the marketing process, we deliver product to the ultimate third-party purchaser at a contractually agreed-upon delivery point and receive a specified index price from the purchaser. In this scenario, we recognize revenue when control transfers to the purchaser at the delivery point based on the index price received from the purchaser. The gathering, processing and compression fees attributable to the gas processing contract, as well as any transportation fees incurred to deliver the product to the purchaser are presented as transportation, gathering, processing and compression expense.

Oil Sales

Our oil sales contracts are generally structured in one of the following ways:

• We sell oil production at the wellhead and collect an agreed-upon index price, net of transportation incurred by the purchaser (that is, a netback arrangement). In this scenario, we recognize revenue when control transfers to the purchaser at the wellhead at the net price received.

• We deliver oil to the purchaser at a contractually agreed-upon delivery point at which the purchaser takes custody, title, and risk of loss of the product. Under this arrangement, we pay a third party to transport the product and receive a specified index price from the purchaser with no deduction. In this scenario, we recognize revenue when control transfers to the purchaser at the delivery point based on the price received from the purchaser. The third-party costs are recorded as transportation, gathering, processing and compression expense.

Brokered Natural Gas, Marketing and Other

We realize brokered margins as a result of buying natural gas or NGLs utilizing separate purchase transactions, generally with separate counterparties, and subsequently selling that natural gas or NGLs under our existing contracts to fill our contract commitments or use existing infrastructure contracts to economically fulfill available capacity. In these arrangements, we take control of the natural gas purchased prior to delivery of that gas under our existing gas contracts with a separate counterparty. Revenues and expenses related to brokering natural gas are reported gross as part of revenues and expenses in accordance with applicable accounting standards. Proceeds generated from the sale of excess firm transportation to third parties is also included here when we are determined to no longer be the primary obligor of such arrangement. Our net brokered margin was a loss of $14.2 million in 2020 compared to a loss of $14.2 million in 2019 and a loss of $16.3 million in 2018.

The recognition of gains or losses on derivative instruments is not considered revenue from contracts with customers. We may use financial or physical contracts accounted for as derivatives as economic hedges to manage price risk associated with normal sales or in limited cases may use them for contracts we intend to physically settle but that do not meet all of the criteria to be treated as normal sales.

Accounts Receivable

Our accounts receivable consist mainly of receivables from oil and gas purchasers and joint interest owners on properties we operate. Although receivables are concentrated in the oil and gas industry, we do not view this as an unusual credit risk. However, this concentration has the potential to impact our overall exposure to credit risk in that our customers may be similarly affected by changes in economic and financial conditions, commodity prices or other conditions. Each reporting period, we assess the recoverability of material receivables using historical data, current market conditions and reasonable and supported forecasts of future economic conditions to determine their expected collectability. The loss given default method is used when, based on management’s judgement, an allowance for expected credit losses is accrued on material receivables to reflect the net amount to be collected. In certain instances, we require purchasers to post stand-by letters of credit. For receivables from joint interest owners, we may have the ability to withhold future revenue disbursements to recover any non-payment of joint interest billings. We regularly review collectability and establish or adjust our allowance as necessary. We have allowances for doubtful accounts relating to exploration and production receivables of $3.0 million at December 31, 2020 compared to $8.8 million at December 31, 2019. For our North Louisiana assets, there were associated joint interest accounts receivable balances that had previously been determined to be uncollectible. As a result of the sale of those assets, such receivables were written off. We recorded bad debt expense of $400,000 in the year ended December 31, 2020 compared to $4.3 million in the year ended December 31, 2019 and income of $1.0 million in the year ended December 31, 2018.

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Cash and Cash Equivalents

Cash and cash equivalents include cash on hand and on deposit and investments in highly liquid debt instruments with maturities of three months or less. Outstanding checks in excess of funds on deposit are included in accounts payable on the consolidated balance sheets and the change in such overdrafts is classified as a financing activity on the consolidated statements of cash flows.

Marketable Securities

Investments in unaffiliated equity securities held in our deferred compensation plans qualify as trading securities and are recorded at fair value. Investments held in the deferred compensation plans consist of various publicly-traded mutual funds. These funds include equity securities and money market instruments and are reported in other assets in the accompanying consolidated balance sheets.

Natural Gas and Oil Properties

Property Acquisition Costs. We use the successful efforts method of accounting for natural gas and oil producing activities. Costs to drill exploratory wells that do not find proved reserves, geological and geophysical costs, delay rentals and costs of carrying and retaining unproved properties are expensed. Costs incurred for exploratory wells that find reserves that cannot yet be classified as proved are capitalized if (a) the well has found a sufficient quantity of reserves to justify its completion as a producing well and (b) we are making sufficient progress assessing the reserves and the economic and operating viability of the project.

Depreciation, Depletion and Amortization. Depreciation, depletion and amortization of proved properties, including other property and equipment such as gathering lines related to natural gas and oil producing activities, is provided on the units of production method. Historically, we have adjusted our depletion rates in the fourth quarter of each year based on the year-end reserve report and at other times during the year when circumstances indicate there has been a significant change in reserves or costs.

Impairments. Our proved natural gas and oil properties are reviewed for impairment annually and periodically as events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. These assets are reviewed for potential impairment at the lowest level for which there are identifiable cash flows that are largely independent of other groups of assets which is the level at which depletion is calculated. The review is done by determining if the historical cost of proved properties less the applicable accumulated depreciation, depletion and amortization is less than the estimated expected undiscounted future net cash flows. The expected future net cash flows are estimated based on our plans to produce and develop reserves. Expected future net cash inflow from the sale of produced reserves is calculated based on estimated future prices and estimated operating and development costs. We estimate prices based upon market-related information including published futures prices. The estimated future level of production, which is based on proved and risk adjusted probable and possible reserves, as appropriate, has assumptions surrounding the future levels of prices and costs, field decline rates, market demand and supply and the economic and regulatory climate. In certain circumstances, we also consider potential sales of properties to third parties in our estimates of cash flows. When the carrying value exceeds the sum of undiscounted future net cash flows, an impairment loss is recognized for the difference between the estimated fair market value as determined by discounted future net cash flows using a discount rate similar to that used by market participants, or comparable market value if available and the carrying value of the asset. A significant amount of judgment is involved in performing these evaluations since the results are based on estimated future events. Such events include a projection of future natural gas and oil prices, an estimate of the ultimate amount of recoverable natural gas and oil reserves that will be produced from an asset group, the timing of future production, future production costs, future abandonment costs and future inflation. We cannot predict whether impairment charges may be required in the future. If natural gas, NGLs and oil prices decrease or drilling efforts are unsuccessful, we may be required to record additional impairments. For additional information regarding proved property impairments, see Note 11.

We evaluate our unproved property investment periodically for impairment. The majority of these costs generally relate to the acquisition of leasehold costs. The costs are capitalized and evaluated (at least quarterly) as to recoverability based on changes brought about by economic factors and potential shifts in business strategy employed by management which could impact the number of drilling locations we intend to drill. Impairment of a significant portion of our unproved properties is assessed and amortized on an aggregate basis based on our average holding period, expected forfeiture rate and anticipated drilling success. Information such as reservoir performance or future plans to develop acreage is also considered. Impairment of individually significant unproved property is assessed on a property-by-property basis considering a combination of time, geologic and engineering factors. In certain circumstances, our future plans to develop acreage may accelerate our impairment. Unproved properties had a net book value of $859.8 million as of December 31, 2020 compared to $868.2 million in 2019. We have recorded abandonment and impairment expense related to unproved properties of $19.3 million in the year ended December 31, 2020 compared to $1.2 billion in 2019 and $515.0 million in 2018. In 2019, an impairment of $1.2 billion was recorded associated with our North Louisiana unproved property values allocated to previously acquired probable and possible reserves that we no longer had to intent to drill based on a shift in capital allocation which materially impacted our drilling inventory.  

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Dispositions. Proceeds from the disposal of natural gas and oil producing properties that are part of an amortization base are credited to the net book value of the amortization group with no immediate effect on income. However, gain or loss is recognized if the disposition is significant enough to materially impact the depletion rate of the remaining properties in the amortization base. Dispositions are accounted for as a sale of assets. For additional information regarding our dispositions, see Note 4.

Other Property and Equipment

Other property and equipment includes assets such as buildings, furniture and fixtures, field equipment, leasehold improvements and data processing and communication equipment. These items are generally depreciated by individual components on a straight-line basis over their economic useful life, which is generally from three to ten years. Leasehold improvements are amortized over the lesser of their economic useful lives or the underlying terms of the associated leases. Depreciation expense was $2.6 million in the year ended December 31, 2020 compared to $5.0 million in the year ended December 31, 2019 and $6.0 million in the year ended December 31, 2018.

Leases

We determine if an arrangement is a lease at inception of the arrangement. To the extent that we determine an arrangement represents a lease, we classify that lease as an operating lease or a finance lease. We currently do not have any material finance leases. We capitalize our operating leases on our consolidated balance sheets through a right-of-use (“ROU”) asset and a corresponding lease liability. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Short-term leases that have an initial term of one year or less are not capitalized but are disclosed. Short-term lease costs exclude expenses related to leases with a lease term of one month or less.

Our operating leases are reflected as operating lease ROU assets, accrued liabilities-current and operating lease liabilities on our consolidated balance sheets. Operating lease ROU assets and liabilities are recognized at the commencement date of an arrangement based on the present value of lease payments over the lease term. In addition to the present value of lease payments, the operating lease ROU asset also includes any lease payments made to the lessor prior to lease commencement less any lease incentives and initial direct costs incurred. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

Our leased assets may be used in joint oil and gas operations with other working interest owners. We recognize lease liabilities and ROU assets only when we are the signatory to a contract as an operator of joint properties. Such lease liabilities and ROU assets are determined and disclosed based on gross contractual obligations. Our lease costs are also presented on a gross contractual basis.

Nature of Leases

We lease certain office space, field equipment, vehicles and other equipment under cancelable and non-cancelable leases to support our operations. Certain of our lease agreements include lease and non-lease components. We account for these components as a single lease.

Lease right-of-use assets and liabilities are initially recorded on the lease commencement date based on the present value of lease payments over the lease term. As most of our lease contracts do not provide an implicit discount rate, we use our incremental borrowing rate which is determined based on information available at the commencement date of a lease. Leases may include renewal, purchase or termination options that can extend or shorten the term of the lease. The exercise of those options is at our discretion and is evaluated at inception and throughout the contract to determine if a modification of the lease term is required. Leases with a term of 12 months or less are not recorded as a right-of-use asset and liability.

Other Assets

Other assets at December 31, 2020 include $63.9 million of marketable securities held in our deferred compensation plans and $11.9 million of other investments, including surface acreage. Other assets at December 31, 2019 included $62.0 million of marketable securities held in our deferred compensation plans and $9.6 million of other investments, including surface acreage.

Stock-based Compensation Arrangements

We account for stock-based compensation under the fair value method of accounting. We grant various types of stock-based awards including restricted stock and performance-based awards. The fair value of our restricted stock awards and our performance-based awards (where the performance condition is based on internal performance metrics) is based on the market value of our common stock on the date of grant. The fair value of our performance-based awards where the performance condition is based on market conditions is estimated using a Monte Carlo simulation method.

We recognize stock-based compensation expense on a straight-line basis over the requisite service period for the entire award. The expense we recognize is net of estimated forfeitures. We estimate our forfeiture rate based on prior experience and adjust it as circumstances warrant. If actual forfeitures are different than expected, adjustments to recognize expense may be required in future

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periods. To the extent possible, we limit the amount of shares to be issued for these awards by satisfying tax withholding requirements with cash. All awards have been issued at prevailing market prices at the time of grant and the vesting of these awards is based on an employee’s continued employment with us, with the exception of employment termination due to death, disability or retirement. For additional information regarding stock-based compensation, see Note 12.

Derivative Financial Instruments

All of our commodity derivative instruments are issued to manage the price risk attributable to our expected natural gas, NGLs and oil production. While there is risk that the financial benefit of rising natural gas, NGLs and oil prices may not be captured, we believe the benefits of stable and predictable cash flow are more important. Among these benefits are more efficient utilization of existing personnel and planning for future staff additions, the flexibility to enter into long-term projects requiring substantial committed capital, smoother and more efficient execution of our ongoing development drilling and production enhancement programs, more consistent returns on invested capital and better access to bank and other capital markets. All unsettled commodity derivative instruments are recorded in the accompanying consolidated balance sheets as either an asset or a liability measured at their fair value. In most cases, our derivatives are reflected on our consolidated balance sheets on a net basis by brokerage firm when they are governed by master netting agreements, which in an event of default, allows us to offset payables to and receivables from the defaulting counterparty. Changes in a derivative’s fair value are recognized in earnings. Cash flows from derivative contract settlements are reflected in operating activities in the accompanying consolidated statements of cash flows.

All realized and unrealized gains and losses on derivative instruments are accounted for using the mark-to-market accounting method. We recognize all unrealized and realized gains and losses related to these contracts in each period in derivative fair value in the accompanying consolidated statements of operations. Certain of our commodity derivatives are swaps where we receive a fixed price for our production and pay market prices to the counterparty. We also have collars which establish a minimum floor price and a predetermined ceiling price. We also have entered into basis swap agreements. The price we receive for our natural gas production can be more or less than the NYMEX price because of adjustments for delivery location (“basis”), relative quality and other factors; therefore, we have entered into natural gas basis swap agreements that effectively fix our basis adjustments. We have entered into propane basis swaps which lock in the differential between Mont Belvieu and international propane indexes. We have also entered into combined natural gas derivative instruments containing a fixed price swap and a sold option to extend the term or expand the volume (which we refer to as a swaption). The swap price is a fixed price determined at the time of the swaption contract. If the option is exercised, the contract will become a swap treated consistently with our fixed-price swaps. We also have the right to receive contingent consideration related to the sale of our North Louisiana assets. This derivative financial instrument is recorded as an asset in the accompanying consolidated balance sheets. This contingent consideration is based on future natural gas, NGLs and oil prices primarily based on published indexes. For additional information regarding our derivative instruments, see Note 10.

From time to time, we may enter into derivative contracts and pay or receive premium payments at the inception of the derivative contract which represent the fair value of the contract at its inception. These amounts would be included within the net derivative asset or liability on our consolidated balance sheets. The amounts paid or received for derivative premiums reduce or increase the amount of gains and losses that are recorded in the earnings each period as the derivative contracts settle. During 2020, we did not materially modify any existing derivative contracts.

Concentrations of Credit Risk

As of December 31, 2020, our primary concentrations of credit risk are the risks of collecting accounts receivable and the risk of counterparties’ failure to perform under derivative contracts. Most of our receivables are from a diverse group of companies, including major energy companies, pipeline companies, local distribution companies, financial institutions, commodity traders and end-users in various industries and such receivables are generally unsecured. The nature of our customers’ businesses may impact our overall credit risk, either positively or negatively, in that these entities may be similarly affected by changes in economic or other conditions. To manage risks of collecting accounts receivable, we monitor our counterparties’ financial strength and/or credit ratings and where we deem necessary, we obtain parent company guarantees, prepayments, letters of credit or other credit enhancements to reduce risk of loss. We do not anticipate a material impact on our financial results due to non-performance by third parties.

For the year ended December 31, 2020, we had no customer that accounted for 10% or more of total natural gas, NGLs and oil sales compared to one customer in both of the years ended December 31, 2019 and 2018. We believe that the loss of any one customer would not have an adverse effect on our ability to sell our natural gas, NGLs and oil production.

We have executed International Swap Dealers Association Master Agreements (“ISDA Agreements”) with counterparties for the purpose of entering into derivative contracts. To manage counterparty risk associated with our derivatives, we select and monitor counterparties based on assessment of their financial strength and/or credit ratings. We may also limit the level of exposure with any single counterparty. Additionally, the terms of our ISDA Agreements provide us and our counterparties with netting rights such that we may offset payables against receivables with a counterparty under separate derivative contracts. Our ISDA Agreements also generally contain set-off rights such that, upon the occurrence of defined acts of default by either us or a counterparty to a derivative contract, the non-defaulting party may set-off receivables owed under all derivative contracts against payables from other agreements

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with that counterparty. None of our derivative contracts have a margin requirement or collateral provision that would require us to fund or post additional collateral prior to the scheduled cash settlement date.

At December 31, 2020, our derivative counterparties included twenty financial institutions and commodity traders, of which all but five are secured lenders in our bank credit facility. At December 31, 2020, our net derivative asset includes a payable to three counterparties not included in our bank credit facility totaling $4.5 million and a receivable from the remaining two counterparties of $5.2 million. In determining fair value of derivative assets, we evaluate the risk of non-performance and incorporate factors such as amounts owed under other agreements permitting set-off, as well as pricing of credit default swaps for the counterparty. Historically, we have not experienced any issues of non-performance by derivative counterparties. Net derivative liabilities are determined in part by using our market based credit spread to incorporate our theoretical risk of non-performance.

Asset Retirement Obligations

The fair value of asset retirement obligations is recognized in the period they are incurred, if a reasonable estimate of fair value can be made. Asset retirement obligations primarily relate to the abandonment of natural gas and oil producing facilities and include costs to dismantle and relocate or dispose of production platforms, gathering systems, wells and related structures. Estimates are based on historical experience of plugging and abandoning wells, estimated remaining lives of those wells based on reserve estimates, external estimates of the cost to plug and abandon the wells in the future and federal and state regulatory requirements. Depreciation of capitalized asset retirement costs will generally be determined on a units-of-production basis while accretion to be recognized will escalate over the life of the producing assets. See Note 9 for additional information.

Exit Costs

We recognize the fair value of a liability for an exit cost in the period in which a liability is incurred. The recognition and fair value estimation of an exit cost liability requires that management take into account certain estimates and assumptions. Fair value estimates are based on future discounted cash outflows required to satisfy the obligation. In periods subsequent to initial measurement, changes to an exit cost liability, including changes resulting from revisions to either the timing or the amount of estimated cash flows over the future contract period, are recognized as an adjustment to the liability in the period of the change utilizing the initial discount rate. These costs, including associated accretion expense, are included in exit and termination costs in the accompanying consolidated statements of operations. See Note 16 for additional information.

Contingencies

We are subject to legal proceedings, claims, and liabilities and environmental matters that arise in the ordinary course of business. We accrue for losses when such losses are considered probable and the amounts can be reasonably estimated. See Note 15 for a more detailed discussion regarding our contingencies.

Environmental Costs

Environmental expenditures are capitalized if the costs mitigate or prevent future contamination or if the costs improve environmental safety or efficiency of the existing assets. Expenditures that relate to an existing condition caused by past operations that have no future economic benefits are expensed.

Deferred Taxes

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to the differences between the financial statement carrying amounts of assets and liabilities and their tax bases as reported in our filings with the respective taxing authorities. Deferred tax assets are recorded when it is more likely than not that they will be realized. The realization of deferred tax assets is assessed periodically based on several interrelated factors. These factors may include our expectation to generate sufficient taxable income in the periods before tax credits and operating loss carryforwards expire. All deferred taxes are classified as long-term on our consolidated balance sheets.

Treasury Stock

Treasury stock purchases are recorded at cost. Upon reissuance, the cost of treasury shares held is reduced by the average purchase price per share of the aggregate treasury shares held.

(3) Accounting Standards

Recently Adopted

Financial Instruments – Credit Losses

In September 2016, an accounting standards update was issued that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standards update requires the use of a forward-looking

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“expected loss” model as opposed to the current “incurred loss” model. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements.

Fair Value Measurement

In August 2018, an accounting standards update was issued which provides additional disclosure requirements for fair value measurements. This new standards update eliminates the requirement to disclose transfers between Level 1 and Level 2 of the fair value hierarchy and provides for additional disclosures for Level 3 fair value measurements. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements.

Not Yet Adopted

None that are expected to have a material impact.

(4) Dispositions

We recognized a pretax net gain on the sale of assets of $110.8 million in the year ended December 31, 2020 compared to a pretax loss of $30.3 million in 2019 and a pretax loss of $10.7 million in 2018. The following describes the significant divestitures that are included in our consolidated results of operations for each of three years ended December 31, 2020, 2019 and 2018.

2020 Dispositions

North Louisiana. In third quarter 2020, we completed the sale of our North Louisiana assets for total consideration having an estimated fair value of $260.0 million. This estimated fair value reflects (i) cash proceeds of $245.0 million, before normal closing adjustments and (ii) $15.0 million in contingent consideration which represents the estimated fair value, on August 14, 2020, of the contingent consideration we are entitled to receive in the future should certain commodity price thresholds be met. During 2020, we recorded a pretax loss of $9.5 million, after closing adjustments and transaction costs.

• Contingent consideration. We are entitled to receive contingent consideration, annually through 2023, of up to $90.0 million based on future realization of certain natural gas and oil prices based on published indexes along with the realized NGLs price of the buyer. We used an option pricing model to determine the fair value of the contingent consideration which resulted in an estimated fair value of $15.0 million at closing. The fair value of the contingent consideration is classified as a current and noncurrent derivative asset on our consolidated balance sheet. We revalue the contingent consideration each reporting period, with any valuation changes being recorded as derivative fair value income or loss in our consolidated statements of operations. See also Note 10 and Note 11 for additional information.

• Divestiture contract obligation. As part of this sale, we retained certain midstream gathering, transportation and processing obligations through 2030. We determined the fair value of these obligations as of the closing date of the sale to be $479.8 million using a probability weighted discounted cash flow model. The divestiture contract obligation is included in current or non-current liabilities in our consolidated balance sheet based on the forecasted timing of payments. These costs are recognized in exit and termination costs in our consolidated statements of operations. See also Note 11 and Note 16 for additional information.

• Novated derivatives. During third quarter 2020, we entered into certain natural gas derivative positions which were subsequently novated to the buyer in conjunction with the completion of the sale. The unrealized fair value of these derivatives at the closing of the sale was a net liability of $12.1 million which was transferred to the buyer. The unrealized loss associated with the novated positions was offset by the gain that we recognized when the liability was transferred to the buyer. These offsetting amounts were recognized on our consolidated statements of operations in gain or loss on sale of assets.

Pennsylvania. In first quarter 2020, we completed the sale of our shallow legacy assets in Northwest Pennsylvania for proceeds of $1.0 million. Based upon the receipt of approval from state governmental authorities of a change in operatorship during that quarter, we recognized a pretax gain of $122.5 million primarily due to the elimination of the asset retirement obligation associated with these properties.

Other. In 2020, we sold miscellaneous material and supplies and other assets for proceeds of $127,000 resulting in a pretax loss of $2.2 million.

2019 Dispositions

Pennsylvania. In third quarter 2019, we sold, in three separate transactions, a proportionately reduced 2.5% overriding royalty, primarily in our Washington County, Pennsylvania leases for gross proceeds of $750.0 million. We recorded a pretax loss of $36.5 million related to this sale which represents closing adjustments and transaction fees. In second quarter 2019, we sold natural gas and oil property, primarily representing over 20,000 unproved acres, for proceeds of $34.0 million and recognized a pretax gain of $5.9 million.

F-17

Other. In 2019, we sold miscellaneous proved property, material and supplies, equipment and other assets for proceeds of $938,000 resulting in a pretax gain of $337,000.

2018 Dispositions

Pennsylvania. In fourth quarter 2018, we sold a proportionately reduced 1% overriding royalty in our Washington County, Pennsylvania leases for gross proceeds of $300.0 million. We recorded a pretax loss of $10.2 million related to this sale which represents closing adjustments and transaction fees.

Northern Oklahoma. In third quarter 2018, we sold properties in Northern Oklahoma for proceeds of $23.3 million and we recorded a pretax net loss of $39,000 related to this sale, after closing adjustments.

Other. In 2018, we sold miscellaneous proved property, materials and supplies and other assets for proceeds of $1.2 million, resulting in a pretax loss of $448,000.

(5) Revenues from Contracts with Customers

Disaggregation of Revenue

We have identified three material revenue streams in our business: natural gas sales, NGLs sales, crude oil and condensate sales. Brokered revenue attributable to each product sales type is included here because the volume of product that we purchase is subsequently sold to separate counterparties in accordance with existing sales contracts under which we also sell our production. Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands):

	Year Ended December 31,
		2020		2019		2018
Natural gas sales	$	943,740	$	1,388,838	$	1,663,832
NGLs sales		578,454		681,134		931,360
Oil sales		85,519		185,453		255,885
Total natural gas, NGLs and oil sales		1,607,713		2,255,425		2,851,077
Sales of purchased natural gas		160,122		332,006		459,634
Sales of purchased NGLs		3,776		1,661		9,017
Other marketing revenue		9,375		11,842		14,109
Total	$	1,780,986	$	2,600,934	$	3,333,837

Performance Obligations and Contract Balance

A significant number of our product sales are short-term in nature with a contract term of one year or less. We typically satisfy our performance obligation upon transfer of control and record revenue in the month production is delivered to the purchaser. Settlement statements for certain gas and NGLs sales may be received 30 to 90 days after the date production is delivered, and as a result, we are required to estimate the amount of production that was delivered to the purchaser and the price that will be received for the sale of the product. We record the differences between our estimates and the actual amounts for product sales in the month that payment is received from the purchaser. We have internal controls in place for our estimation process and any identified differences between our revenue estimates and actual revenue received historically have not been significant. For the three years ended December 31, 2020, 2019 and 2018, revenue recognized in the reporting period related to performance obligations satisfied in prior reporting periods was not material. Under our sales contracts, we invoice customers once our performance obligations have been satisfied, at which point payment is unconditional. Accordingly, our product sales contracts do not give rise to contract assets or liabilities. Accounts receivable attributable to our revenue contracts with customers was $237.8 million at December 31, 2020 compared to $237.0 million at December 31, 2019.

F-18

(6) Income Taxes

Our income tax benefit was $25.6 million for the year ended December 31, 2020 compared to $500.3 million in 2019 and $30.5 million in 2018. Reconciliation between the statutory federal income tax rate and our effective income tax rate is as follows:

	Year Ended December 31,
	2020		2019			2018
Federal statutory tax rate	21.0	%		21.0	%		21.0	%
State, net of federal benefit	5.2			3.8			(0.3	)
State rate and law change	4.3			1.8			0.9
Valuation allowances	(26.3	)		(3.8	)		(0.4	)
Non-deductible equity compensation	(0.7	)		(0.2	)		(0.1	)
Goodwill impairment	—			—			(19.4	)
Consolidated effective tax rate	3.5	%		22.6	%		1.7	%

Income tax (benefit) expense attributable to (loss) income before income taxes consists of the following (in thousands):

		2020									2019										2018
		Current		Deferred			Total			Current		Deferred			Total				Current					Deferred			Total
U.S. federal	$	(366	)	$	(24,489	)	$	(24,855	)	$	—	$	(434,585	)		$	(434,585	)		$		—	$		(25,322	)	$	(25,322	)
U.S. state and local		(157	)		(540	)		(697	)		6,147		(71,853	)			(65,706	)				—			(5,167	)		(5,167	)
Total	$	(523	)	$	(25,029	)	$	(25,552	)	$	6,147	$	(506,438	)		$	(500,291	)		$		—	$		(30,489	)	$	(30,489	)

Significant components of deferred tax assets and liabilities are as follows:

	December 31,
	2020			2019
	(in thousands)
Deferred tax assets:
Net operating loss carryforward	$	879,339		$	581,324
Divestiture contract obligation		132,352			—
Deferred compensation		16,635			16,815
Equity compensation		5,445			7,188
Asset retirement obligation		18,923			60,064
Interest expense carryover		15,757			18,035
Lease deferred tax assets		16,070			16,450
Cumulative mark-to-market loss		2,607			—
Other		12,082			11,072
Valuation allowances:
Federal		(152,499	)		(32,530	)
State, net of federal benefit		(226,520	)		(158,296	)
Total deferred tax assets		720,191			520,122
Deferred tax liabilities:
Depreciation and depletion		(839,869	)		(639,581	)
Cumulative mark-to-market gain		—			(25,957	)
Lease deferred tax liabilities		(15,058	)		(14,780	)
Other		(531	)		—
Total deferred tax liabilities		(855,458	)		(680,318	)
Net deferred tax liability	$	(135,267	)	$	(160,196	)

At December 31, 2020, deferred tax liabilities exceeded deferred tax assets by $135.3 million. As of December 31, 2020, we have a state valuation allowance of $226.5 million related to state tax attributes in Louisiana, Oklahoma, Pennsylvania, Texas and

F-19

West Virginia. As of December 31, 2020, we have federal valuation allowances of $152.5 million primarily related to our federal net operating loss carryforward (“NOL”), federal basis differences and charitable contribution carryforward. See the table below for activity related to these valuation allowances.

The changes in our deferred tax asset valuation allowances are as follows (in thousands):

		2020			2019			2018
Balance at the beginning of the year	$	(190,826	)	$	(120,347	)	$	(125,134	)
Charged to provision for income taxes:
State net operating loss carryforwards		(56,903	)		(25,710	)		(23,926	)
Federal net operating loss carryforwards		(113,988	)		13,780			11,716
Non-recoverable deferred tax assets		(7,433	)		(28,208	)		—
Other state valuation allowances		(11,321	)		(31,214	)		16,380
Other federal valuation allowances		244			346			494
Other		1,208			527			123
Balance at the end of the year	$	(379,019	)	$	(190,826	)	$	(120,347	)

At December 31, 2020, we had federal NOL carryforwards of $3.2 billion. This includes $1.4 billion that expires between 2021 and 2038 and also includes $1.8 billion of NOL carryforwards generated after 2017 that do not expire. We have state NOL carryforwards in Pennsylvania of $935.0 million that expire between 2027 and 2040 and in Louisiana, we have state NOL carryforwards of $1.4 billion that expire between 2034 and 2040. We file consolidated tax returns in the United States federal jurisdiction. We file separate company state income tax returns in Louisiana and Pennsylvania and file consolidated or unitary state income tax returns in Oklahoma, Texas and West Virginia. We are subject to U.S. federal income tax examinations for the years 2017 and after and we are subject to various state tax examinations for years 2016 and after. We have not extended the statute of limitation period in any income tax jurisdiction. Our policy is to recognize interest related to income tax expense in interest expense and penalties in general and administrative expense. We do not have any accrued interest or penalties related to tax amounts as of December 31, 2020. Throughout 2020 and 2019, our unrecognized tax benefits were not material.

(7) Net Income (Loss) per Common Share

Basic income or loss per share attributable to common stockholders is computed as (i) income or loss attributable to common stockholders (ii) less income allocable to participating securities (iii) divided by weighted average basic shares outstanding. Diluted income or loss per share attributable to common stockholders is computed as (i) basic income or loss attributable to common stockholders (ii) plus diluted adjustments to income allocable to participating securities (iii) divided by weighted average diluted shares outstanding. Diluted net income (loss) per share is calculated under both the two class method and the treasury stock method and the more dilutive of the two calculations is presented. The following table sets forth a reconciliation of net income or loss to basic income or loss attributable to common stockholders and to diluted income or loss attributable to common stockholders (in thousands except per share amounts):

	Year Ended December 31,
	2020			2019			2018
Net loss, as reported	$	(711,777	)	$	(1,716,297	)	$	(1,746,481	)
Participating basic earnings (a)		—			(251	)		(245	)
Basic net loss attributed to common stockholders		(711,777	)		(1,716,548	)		(1,746,726	)
Reallocation of participating earnings (a)		—			—			—
Diluted net loss attributed to common stockholders	$	(711,777	)	$	(1,716,548	)	$	(1,746,726	)
Net loss per common share:
Basic	$	(2.95	)	$	(6.92	)	$	(7.10	)
Diluted	$	(2.95	)	$	(6.92	)	$	(7.10	)

^(a)  Restricted stock Liability Awards represent participating securities because they participate in nonforfeitable dividends or distributions with common equity owners. Income allocable to participating securities represents the distributed and undistributed earnings attributable to the participating securities. Participating securities, however, do not participate in undistributed net losses.

F-20

The following table details basic weighted average common shares outstanding and diluted weighted average common shares outstanding (in thousands):

	Year Ended December 31,
	2020	2019		2018
Denominator:
Weighted average common shares outstanding – basic and diluted	241,373		247,970		246,171

Weighted average common shares – basic excludes 5.5 million shares of restricted stock Liability Awards held in our deferred compensation plans (although all awards are issued and outstanding upon grant) for the period ending December 31, 2020 compared to 3.1 million shares for both periods ending December 31, 2019 and 2018. Due to our net loss for the years ended December 31, 2020, 2019 and 2018, we excluded all outstanding equity grants from the computation of diluted net loss per share because the effect would have been anti-dilutive to the computations.

(8) Indebtedness

We had the following debt outstanding as of the dates shown below (in thousands) (bank debt interest rate at December 31, 2020 is shown parenthetically). The expenses of issuing debt are capitalized and included as a reduction to debt in the accompanying consolidated balance sheets. These costs are amortized over the expected life of the related instruments. When debt is retired before maturity, or modifications significantly change the cash flows, the related unamortized costs are expensed. No interest was capitalized in the three-year period ended December 31, 2020.

		December 31, 2020			December 31, 2019
Bank debt (2.2%)	$	702,000		$	477,000
Senior notes
4.875% senior notes due 2025		750,000			750,000
5.00% senior notes due 2022		169,589			511,886
5.00% senior notes due 2023		532,335			741,531
5.75% senior notes due 2021		25,496			374,139
5.875% senior notes due 2022		48,528			297,617
9.25% senior notes due 2026		850,000			—
Other senior notes due 2022		490			590
Total senior notes		2,376,438			2,675,763
Senior subordinated notes
5.00% senior subordinated notes due 2022		9,730			19,054
5.00% senior subordinated notes due 2023		7,712			7,712
5.75% senior subordinated notes due 2021		19,896			22,214
Total senior subordinated notes		37,338			48,980
Total debt		3,115,776			3,201,743
Unamortized premium		456			3,013
Unamortized debt issuance costs		(30,625	)		(31,819	)
Total debt (net of debt issuance costs)	$	3,085,607		$	3,172,937

Bank Debt

In April 2018, we entered into an amended and restated revolving bank facility, which we refer to as our bank debt or our bank credit facility, which is secured by substantially all of our assets and has a maturity date of April 13, 2023. The bank credit facility provides for a maximum facility amount of $4.0 billion and an initial borrowing base of $3.0 billion. The bank credit facility provides for a borrowing base subject to redeterminations and for event-driven unscheduled redeterminations. Our current bank group is composed of twenty-six financial institutions, with no one bank holding more than 7.0% of the total facility. The borrowing base may be increased or decreased based on our request and sufficient proved reserves, as determined by the bank group. The commitment amount may be increased to the borrowing base, subject to payment of a mutually acceptable commitment fee to those banks agreeing to participate in the facility increase. Borrowings under the bank facility can either be at the alternate base rate (“ABR,” as defined in the bank credit agreement) plus a spread ranging from 0.25% to 1.25% or at the LIBOR Rate (as defined in the bank credit agreement) plus a spread ranging from 1.25% to 2.25%. The applicable spread is dependent upon borrowings relative to the borrowing base. We may elect, from time to time, to convert all or any part of our LIBOR loans to ABR loans or to convert all or any part of our ABR

F-21

loans to LIBOR loans. The weighted average interest rate was 2.6% for the year ended December 31, 2020 compared to 3.8% for the year ended December 31, 2019 and 3.7% for the year ended December 31, 2018. A commitment fee is paid on the undrawn balance based on an annual rate of 0.30% to 0.375%. At December 31, 2020, the commitment fee was 0.3%, the interest rate margin was 2.0% on our LIBOR loans and 1.0% on our ABR loans.

On December 31, 2020, bank commitments totaled $2.4 billion and the outstanding balance under our bank credit facility was $702.0 million, before deducting debt issuance costs. Additionally, we had $334.6 million of undrawn letters of credit leaving $1.4 billion of committed borrowing capacity available under the facility. As part of our redetermination completed in September 2020, our borrowing base was reaffirmed for $3.0 billion and our bank commitment was also reaffirmed at $2.4 billion. As part of our redetermination completed in March 2020, we agreed to return to a semi-annual borrowing base redetermination, an increase in the applicable margin of 50 basis points on drawn facility balances and an increase to the letter of credit sublimit. As of February 19, 2021, we have sufficient available borrowing capacity under our credit facility to satisfy any requests for additional collateral our transportation counterparties may request in the event of a credit rating downgrade.

New Senior Notes

In January 2020, we issued $550.0 million aggregate principal amount of 9.25% senior notes due 2026 (the “9.25% Notes”) for an estimated net proceeds of $541.4 million after underwriting discounts and commissions of $8.6 million. The notes were issued at par. The 9.25% Notes were offered to qualified institutional buyers and to non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S under the Securities Act. Interest due on the 9.25% Notes is payable semi-annually in February and August and is unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. On or after February 1, 2025, we may redeem the 9.25% Notes, in whole or in part and from time to time, at 100% of the principal amounts plus accrued and unpaid interest. We may redeem the notes prior to their maturity at redemption prices based on a premium, plus accrued and unpaid interest as described in the indenture governing the 9.25% Notes.  Upon occurrence of certain changes in control, we must offer to repurchase the 9.25% Notes. The 9.25% Notes are unsecured and are subordinated to all of our existing and future secured debt, rank equally with all of our existing and future unsecured debt and rank senior to all of our existing and future subordinated debt. On the closing of the 9.25% Notes, we used the proceeds to redeem $500.0 million of our senior notes due 2021 and 2022 with the remainder applied to our borrowings under our bank credit facility.

In September 2020, we issued an additional $300.0 million aggregate principal amount of our 9.25% Notes (the “Additional 9.25% Notes”) for an estimated net proceeds of $295.0 million after underwriting expenses and commissions of $5.0 million. On the closing of the issuance of the Additional 9.25% Notes, we used these proceeds, along with proceeds from our credit facility, to redeem $500.0 million of various senior and senior subordinated notes. In November 2020, our 9.25% Notes and our Additional 9.25% Notes were exchanged for an equal principal amount of registered notes pursuant to an effective registration statement on Form S-4 filed with the SEC on November 5, 2020 under the Securities Act (the “New Notes”). The New Notes are identical to the 9.25% Notes and the Additional 9.25% Notes except the New Notes are registered under the Securities Act and do not have restrictions on transfer, registration rights or provisions for additional interest.

In January 2021, we issued $600.0 million aggregate principal amount of 8.25% senior notes due 2029 (the “8.25% Notes”) for an estimated net proceeds of $590.8 million after underwriting discounts and commissions of $9.2 million. The notes were issued at par. The 8.25% Notes were offered to qualified institutional buyers and to non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S under the Securities Act of 1933, as amended (the “Securities Act”). Interest due on the 8.25% Notes is payable semi-annually in January and July and is unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. On or after January 15, 2027, we may redeem the 8.25% Notes in whole or in part from time to time, at 100% of the principal amounts plus accrued and unpaid interest. We may redeem the notes prior to their maturity at redemption prices based on a premium, plus accrued and unpaid interest as described in the indenture governing the 8.25% Notes. Upon occurrence of certain changes in control, we must offer to repurchase the 8.25% Notes. The 8.25% Notes are unsecured and are subordinated to all of our existing and future secured debt, rank equally with all of our existing and future unsecured debt and rank senior to all of our existing and future subordinated debt. Upon closing of the 8.25% Notes, we used the proceeds to repay borrowings under our bank credit facility.

Early Extinguishment of Debt

In September 2020, we purchased for cash $500.0 million aggregate principal amount of our 5.75% senior notes due 2021, 5.00% senior notes due 2022, 5.875% senior notes due 2022, 5.00% senior notes due 2023, 5.75% senior subordinated notes due 2021 and 5.00% senior subordinated note due 2022. An early cash tender of $5.3 million was paid to note holders who tendered their notes within the ten business day early offer period. We recorded a loss on early extinguishment of debt in third quarter 2020 of $8.0 million, net of transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt. The cash tender offer and the early cash tender premium were financed from the issuance of the Additional 9.25% Notes (see New Senior Notes above) and proceeds from our credit facility. In August, the proceeds received from the sale of our North Louisiana assets were used to reduce borrowings under our credit facility.

F-22

In January 2020, we purchased for cash $500.0 million aggregate principal amount of our 5.75% senior notes due 2021 and our 5.875% senior notes due 2022. An early cash tender of $15.1 million was paid to note holders who tendered their notes within the ten business day early offer period. We recorded a loss on early extinguishment of debt in first quarter 2020 of $17.5 million, net of transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt. The cash tender offer and early cash tender premium were financed from the issuance of the 9.25% Notes. (see New Senior Notes above).

In 2020, we purchased in the open market $1.1 million principal amount of our 5.75% senior subordinated notes due 2021, $1.0 million principal amount of our 5.00% senior subordinated notes due 2022, $12.5 million principal amount of our 5.75% senior notes due 2021, $8.1 million principal amount of our 5.875% senior notes due 2022, $51.3 million principal amount of our 5.00% senior notes due 2022 and $86.9 million principal amount of our 5.00% senior notes due 2023. We recognized a gain on early extinguishment of debt of $39.6 million, net of transaction costs and the expensing of the remaining deferred financing costs on the repurchased debt.

In 2019, we purchased in the open market $101.8 million principal amount of our 5.75% senior notes due 2021, $31.6 million principal amount of our 5.875% senior notes due 2022 and $68.1 million principal amount of our 5.00% senior notes due 2022. We recognized a gain of $5.4 million on early extinguishment of debt, including transaction costs and the expensing of the remaining deferred financing costs on the repurchased debt.

Senior Notes and Senior Subordinated Notes

If we experience a change of control, noteholders may require us to repurchase all or a portion of our senior subordinated notes and our senior notes at 101% of the principal amount plus accrued and unpaid interest, if any. All of the senior subordinated notes and the guarantees by our subsidiary guarantors are general, unsecured obligations and are subordinated to our bank debt and are subordinated to existing and future senior debt that we or our subsidiary guarantors are permitted to incur.

Guarantees

Range Resources Corporation is a holding company which owns no operating assets and has no significant operations independent of its subsidiaries. The guarantees by our wholly-owned subsidiaries, which are directly or indirectly owned by Range, of our senior notes, our senior subordinated notes and our bank credit facility are full and unconditional and joint and several, subject to certain customary release provisions. A subsidiary guarantor may be released from its obligations under the guarantee:

• in the event of a sale or other disposition of all or substantially all of the assets of the subsidiary guarantor or a sale or other disposition of all the capital stock of the subsidiary guarantor, to any corporation or other person (including an unrestricted subsidiary of Range) by way of merger, consolidation, or otherwise; or

• if Range designates any restricted subsidiary that is a guarantor to be an unrestricted subsidiary in accordance with the terms of the indenture.

F-23

Debt Covenants and Maturity

Our bank credit facility contains negative covenants that limit our ability, among other things, to pay cash dividends, incur additional indebtedness, sell assets, enter into certain hedging contracts, change the nature of our business or operations, merge, consolidate, or make certain investments. In addition, we are required to maintain a ratio of EBITDAX (as defined in the credit agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the credit agreement) of no less than 1.0. In addition, the ratio of the present value of proved reserves (as defined in the credit agreement) to total debt must be equal to or greater than 1.5 until Range has two investment grade ratings. We were in compliance with applicable covenants under the bank credit facility at December 31, 2020.

The following is the principal maturity schedule for our long-term debt outstanding as of December 31, 2020 (in thousands):

	Year Ended December 31,
2021	$	45,392
2022		228,337
2023		1,242,047
2024		—
2025		750,000
Thereafter		850,000
	$	3,115,776

(9) Asset Retirement Obligations

Our asset retirement obligations (“ARO”) primarily represent the present value of the estimated amounts we will incur to plug, abandon and remediate our producing properties at the end of their productive lives. Significant inputs used in determining such obligations include estimates of plugging and abandonment costs, estimated future inflation rates and well lives. The inputs are calculated based on historical data as well as current estimated costs. The following is a reconciliation of our liability for plugging and abandonment costs as of December 31, 2020 and 2019 (in thousands):

	2020			2019
Beginning of period	$	251,076		$	312,754
Liabilities incurred		1,483			4,063
Acquisitions		123			—
Liabilities settled		(4,634	)		(5,953	)
Disposition of wells		(176,748	)		(82,576	)
Accretion expense		7,518			15,658
Change in estimate		1,004			7,130
End of period		79,822			251,076
Less current portion		(6,689	)		(2,393	)
Long-term asset retirement obligations	$	73,133		$	248,683

Accretion expense is recognized as an increase to depreciation, depletion and amortization expense in the accompanying consolidated statements of operations.

F-24

(10) Derivative Activities

We use commodity-based derivative contracts to manage exposure to commodity price fluctuations. We do not enter into these arrangements for speculative or trading purposes. We do not utilize complex derivatives as we typically utilize commodity swap, calls, swaptions or collar contracts to (1) reduce the effect of price volatility of the commodities we produce and sell and (2) support our annual capital budget and expenditure plans. Every derivative instrument is required to be recorded on our consolidated balance sheets as either an asset or a liability measured at its fair value. Their fair value, which is represented by the estimated amount that would be realized upon termination, based on a comparison of the contract price and a reference price (generally NYMEX for natural gas and crude oil or Mont Belvieu for NGLs), approximated a net derivative liability of $18.0 million at December 31, 2020. These contracts expire monthly through December 2021. The following table sets forth the derivative volumes by year as of December 31, 2020, excluding our basis and freight swaps and divestiture contingent consideration which are discussed separately below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price
			Swap		Sold Put	Floor	Ceiling
Natural Gas (1)
2021	Swaps	550,000 Mmbtu/day	$	2.77
January-October 2021	Collars	342,237 Mmbtu/day				$ 2.51	$ 3.00
2021	Three-way Collars	240,000 Mmbtu/day			$ 1.99	$ 2.33	$ 2.60
Crude Oil
2021	Swaps	3,479 bbls/day	$	46.11
NGLs (C3-Propane)
January-June 2021	Swaps	6,972 bbls/day	$	0.55/gallon
January-June 2021	Collars	5,000 bbls/day				$ 0.50/gallon	$ 0.60/gallon
NGLs (NC4-Normal Butane)
January-March 2021	Swaps	2,000 bbls/day	$	0.71/gallon
January-March 2021	Collars	1,000 bbls/day				$ 0.60/gallon	$ 0.70/gallon
NGLs (C5-Natural Gasoline)
January-September 2021	Swaps	2,821 bbls/day	$	0.92/gallon
January-March 2021	Calls	1,000 bbls/day	$	0.95/gallon

⁽¹⁾ We also sold natural gas call swaptions of 280,000 Mmbtu/day for 2022 at a weighted average price of $2.81 per Mmbtu.

Basis Swap Contracts

In addition to the swaps, collars and swaptions above, at December 31, 2020, we had natural gas basis swap contracts which lock in the differential between NYMEX and certain of our physical pricing points in Appalachia. These contracts settle monthly through December 2024 and include a total volume of 180,510,000 Mmbtu. The fair value of these contracts was a net derivative asset of $3.7 million on December 31, 2020.

At December 31, 2020, we also had propane spread swap contracts which lock in the differential between Mont Belvieu and international propane indexes. The contracts settle monthly in 2021. The fair value of these contracts was a net derivative asset of $794,000 on December 31, 2020.

Freight Swap Contracts

In connection with our international propane sales, we utilize propane swaps. To further hedge our propane price, at December 31, 2020, we had freight swap contracts which lock in the freight rate for a specific trade route on the Baltic Exchange. These contracts settle monthly and cover 5,000 metric tons per month in second quarter 2021 and 10,000 metric tons for the remainder of the year. The fair value of these contracts was a net derivative asset of $1.1 million on December 31, 2020.

Divestiture Contingent Consideration

In addition to the derivatives described above, our right to receive contingent consideration in conjunction with the sale of our North Louisiana assets was determined to be a derivative financial instrument that is not designated as a hedging instrument. The contingent consideration of up to $90.0 million is based on future realization of  natural gas and oil prices based on published indexes and realized NGLs prices of the buyer for the years 2021, 2022 and 2023. All changes in the fair value are recognized as a gain or loss in earnings in the period they occur in derivative fair value income or loss in our consolidated statements of operations. We currently do not expect to receive any value for the period from July through December 2020. The fair value of this instrument on December 31, 2020 was a derivative asset of $16.0 million.

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Derivative Assets and Liabilities

The combined fair value of derivatives included in the accompanying consolidated balance sheets as of December 31, 2020 and 2019 is summarized below (in thousands). As of December 31, 2020, we are conducting derivative activities with twenty counterparties, of which all but five are secured lenders in our bank credit facility. We believe all of these counterparties are acceptable credit risks. At times, such risks may be concentrated with certain counterparties. The credit worthiness of our counterparties is subject to periodic review. The assets and liabilities are netted where derivatives with both gain and loss positions are held by a single counterparty and we have master netting arrangements.

		December 31, 2020
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	33,559	$	(16,821	)	$	16,738
	–collars		7,016		(2,329	)		4,687
	–three-way collars		535		(6,139	)		(5,604	)
	–basis swaps		7,894		(3,502	)		4,392
Crude oil	–swaps		2,465		(829	)		1,636
NGLs	–C3 propane spread		4,863		(4,863	)		—
	–C3 propane collars		—		(107	)		(107	)
Freight	–swaps		2,310		—			2,310
Divestiture contingent consideration			15,960		—			15,960
		$	74,602	$	(34,590	)	$	40,012

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		December 31, 2020
		Gross Amounts of  Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(10,120	)	$	16,821	$	6,701
	–swaptions		(9,803	)		—		(9,803	)
	–collars		—			2,329		2,329
	–three-way collars		(18,353	)		6,139		(12,214	)
	–basis swaps		(4,197	)		3,502		(695	)
Crude oil	–swaps		(5,471	)		829		(4,642	)
NGLs	–C3 propane spread		(4,069	)		4,863		794
	–C3 propane swaps		(8,243	)		—		(8,243	)
	–C3 propane collars		(3,086	)		107		(2,979	)
	–C5 natural gasoline swaps		(4,897	)		—		(4,897	)
	–C5 natural gasoline calls		(546	)		—		(546	)
	–NC4 butane swaps		(651	)		—		(651	)
	–NC4 butane collars		(401	)		—		(401	)
Freight	–swaps		(1,206	)		—		(1,206	)
		$	(71,043	)	$	34,590	$	(36,453	)

		December 31, 2019
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	134,364	$	(2,913	)	$	131,451
	–swaptions		—		(1,325	)		(1,325	)
	–basis swaps		10,766		(1,092	)		9,674
Crude oil	–swaps		3,893		(4,794	)		(901	)
	–swaptions		—		(1,597	)		(1,597	)
	–calls		—		(349	)		(349	)
NGLs	–C3 propane spread swaps		1,913		(1,913	)		—
	–NC4 butane swaps		167		—			167
	–C5 natural gasoline swaps		60		(127	)		(67	)
Freight	–swaps		1,529		(1,028	)		501
		$	152,692	$	(15,138	)	$	137,554

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		December 31, 2019
		Gross Amounts of  Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(1,657	)	$	2,913	$	1,256
	–swaptions		(2,594	)		1,325		(1,269	)
	–basis swaps		(1,371	)		1,092		(279	)
Crude oil	–swaps		(4,814	)		4,794		(20	)
	–swaptions		(2,254	)		1,597		(657	)
	–calls		(349	)		349		—
NGLs	–C3 propane spread swaps		(16,040	)		1,913		(14,127	)
	–C5 natural gasoline swaps		(127	)		127		—
Freight	–swaps		—			1,028		1,028
		$	(29,206	)	$	15,138	$	(14,068	)

The effects of our derivatives on our consolidated statements of operations for the last three years are summarized below (in thousands).

	Derivative Fair Value Income (Loss)
	Year Ended December 31,
	2020			2019			2018
Commodity swaps	$	158,248		$	219,968		$	(57,950	)
Swaptions		(4,955	)		333			(6,556	)
Collars		3,304			(3,903	)		17,583
Three-way collars		(16,346	)		—			—
Basis swaps		48,278			6,661			(1,104	)
Calls		(558	)		(349	)		(2,653	)
Freight swaps		(1,230	)		3,971			(512	)
Divestiture contingent consideration		970			—			—
Total	$	187,711		$	226,681		$	(51,192	)

(11) Fair Value Measurements

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There are three approaches for measuring the fair value of assets and liabilities: the market approach, the income approach and the cost approach, each of which includes multiple valuation techniques. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to measure fair value by converting future amounts, such as cash flows or earnings, into a single present value amount using current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace the service capacity of an asset. This is often referred to as current replacement cost. The cost approach assumes that the fair value would not exceed what it would cost a market participant to acquire or construct a substitute asset of comparable utility, adjusted for obsolescence.

The fair value accounting standards do not prescribe which valuation technique should be used when measuring fair value and does not prioritize among the techniques. These standards establish a fair value hierarchy that prioritizes the inputs used in applying the various valuation techniques. Inputs broadly refer to the assumptions that market participants use to make pricing decisions, including assumptions about risk. Level 1 inputs are given the highest priority in the fair value hierarchy, while Level 3 inputs are given the lowest priority. The three levels of the fair value hierarchy are as follows:

• Level 1 – Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.

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• Level 2 – Observable market-based inputs or unobservable inputs that are corroborated by market data. These are inputs other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date.

• Level 3 – Unobservable inputs for which there is little, if any, market activity for the asset or liability being measured. These inputs reflect management’s best estimates of the assumptions market participants would use in determining fair value. Our Level 3 measurements consist of instruments using standard pricing models and other valuation methods that utilize unobservable pricing inputs that are significant to the overall value.

Valuation techniques that maximize the use of observable inputs are favored. Assets and liabilities are classified in their entirety based on the lowest priority level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement of assets and liabilities within the levels of the fair value hierarchy. When transfers between levels occur, it is our policy to assume the transfer occurred at the date of the event or change in circumstances that caused the transfer.

Fair Values-Recurring

We use a market approach for our recurring fair value measurements and endeavor to use the best information available. Accordingly, valuation techniques that maximize the use of observable impacts are favored. The following tables present the fair value hierarchy table for assets and liabilities measured at fair value, on a recurring basis (in thousands):

		Fair Value Measurements at December 31, 2020 Using:
		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2020
Trading securities held in the deferred compensation plans		$	63,942	$	—		$	—		$	63,942
Derivatives	–swaps		—		6,642			—			6,642
	–calls		—		—			(546	)		(546	)
	–collars		—		7,016			(3,487	)		3,529
	–three-way collars		—		(17,818	)		—			(17,818	)
	–basis swaps		—		4,491			—			4,491
	–swaptions		—		—			(9,803	)		(9,803	)
Derivatives–freight swaps			—		1,104			—			1,104
Divestiture contingent consideration			—		15,960			—			15,960

		Fair Value Measurements at December 31, 2019 Using:
		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2019
Trading securities held in the deferred compensation plans		$	62,009	$	—		$	—		$	62,009
Derivatives	–swaps		—		131,886			—			131,886
	–calls		—		(349	)		—			(349	)
	–basis swaps		—		(4,732	)		—			(4,732	)
	–swaptions		—		—			(4,848	)		(4,848	)
Derivatives	–freight swaps		—		1,529			—			1,529

Our trading securities in Level 1 are exchange-traded and measured at fair value with a market approach using December 31, 2020 market values. Derivatives in Level 2 are measured at fair value with a market approach using third-party pricing services, which have been corroborated with data from active markets or broker quotes. Derivatives in Level 3 are measured at fair value with a market approach using third-party pricing services, which have been corroborated with data from active markets or broker quotes. As of December 31, 2020, a portion of our natural gas derivative instruments contain swaptions where the counterparty has the right, but not the obligation, to enter into a fixed price swap on a predetermined date. In addition to our swaptions in Level 3, at December 31, 2020, we have propane and butane collars and natural gasoline calls. Subjectivity in the volatility factors utilized can cause a significant change in the fair value measurement of our derivatives in Level 3. For our swaptions, we used a weighted average implied volatility of 24%. We utilized a range of implied volatilities from 34% to 66% for our butane and propane collars and natural gasoline calls with a

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weighted average implied volatility of approximately 44%. The following is a reconciliation of the beginning and ending balances for derivative instruments classified as Level 3 in the fair value hierarchy (in thousands):

		Year Ended December 31, 2020
Balance at December 31, 2019	$	(4,848	)
Total gains (losses):
Included in earnings		(13,836	)
Settlements, net		2,743
Transfers in and/or out of Level 3		2,105
Balance at December 31, 2020	$	(13,836	)

Our trading securities held in the deferred compensation plan are accounted for using the mark-to-market accounting method and are included in other assets in the accompanying consolidated balance sheets. We elected to adopt the fair value option to simplify our accounting for the investments in our deferred compensation plan. Interest, dividends, and mark-to-market gains/losses are included in deferred compensation plan expense in the accompanying consolidated statements of operations. For the year ended December 31, 2020, interest and dividends were $713,000 and mark-to-market was a gain of $6.3 million. For the year ended December 31, 2019, interest and dividends were $1.1 million and mark-to-market was a gain of $8.5 million. For the year ended December 31, 2018, interest and dividends were $1.1 million and mark-to-market was a loss of $7.9 million.

Divestiture Contingent Consideration. In August 2020, we completed the sale of our North Louisiana assets where we are entitled to receive contingent consideration of up to $90 million, based on future realization of natural gas and oil prices based on published indexes along with NGLs prices based on the realized NGLs prices of the buyer. We used an option pricing model to estimate the fair value of the contingent consideration using significant Level 2 inputs that include quoted future commodity prices based on active markets and implied volatility factors. See also Note 4 and Note 10 for additional information.

Fair Values-Non recurring

Due to declines in commodity prices and estimated reserves over the last three years, there were indications that the carrying values of certain of our natural gas and oil properties may be impaired and undiscounted future cash flows attributed to these assets indicated their carrying amounts were not expected to be recovered. Their fair value is generally measured using an income approach based upon internal estimates of future production levels, prices, drilling and operating costs and discount rates, which are Level 3 inputs. In some cases, we also considered the potential sale of these properties and comparable market value, if available. In fourth quarter 2019, there were indicators that the carrying value of our North Louisiana properties may be impaired due to a shift in business strategy employed by management and also the possibility of a divestiture of these assets. As a result of the impairment evaluation, where we used an income approach, also referred to as a discounted cash flow model, to assess fair value and we recorded an impairment of $1.1 billion. An additional guideline transaction market approach was also utilized to corroborate the estimated fair value. The expected future net cash flows used published future prices and were discounted using an annual rate of twelve percent to determine fair value. In first quarter 2020, we recognized an additional impairment charge of $77.0 million related to these North Louisiana properties that reduced the carrying value to the anticipated sales proceeds which is a market approach using Level 2 inputs. See also Note 4 for additional information. During 2018, we increased our interest in certain properties in our shallow legacy oil and natural gas assets in Northwest Pennsylvania for a minimal dollar amount for which the fair value was previously determined to be zero. As a result, in 2018 we recorded additional impairment of $15.3 million related to these properties. Also in early 2018, there were indicators that the carrying value of certain of our oil and gas properties in Oklahoma may be impaired and undiscounted future cash flows attributed to these assets indicated their carrying amounts were not expected to be recovered. We recorded non-cash impairment charges of $7.3 million related to these properties. The following table presents the value of these assets measured at fair value on a nonrecurring basis at the time impairment was recorded (in thousands):

	Year Ended December 31,
	2020				2019				2018
	Fair Value		Impairment		Fair Value		Impairment		Fair Value		Impairment
Natural gas and oil properties	$	290,500	$	77,000	$	370,500	$	1,093,531	$	32,516	$	22,614

North Louisiana Divestiture. We have recorded a divestiture contract obligation in conjunction with the sale of our North Louisiana assets. The fair value of this obligation was determined as of the closing date using Level 3 inputs based on a probability-weighted forecast that considers historical results, market conditions and various potential development plans of the buyer to arrive at the estimated present value of the future payments. Inherent in this fair value calculation are numerous other assumptions and judgements including the credit-adjusted discount rate as well as the development plans of the buyer and our probability weighted

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forecast of those drilling plans, market conditions and the ultimate usage by the buyer of each facility included in the agreement, all of which are inherently uncertain and can alter the amount and timing of future payments. A significant portion of this obligation is a gas processing agreement that includes a deficiency payment if the minimum volume commitment is not met. The agreement also includes additional transportation agreements that are based on contractual rates applied to a minimum volume usage. The present value of future cash payments was determined using a 12 percent discount rate. Our probability-weighted forecast of drilling plans includes probable development scenarios by the buyer ranging from no incremental future drilling up to a two rig development plan. If development does not occur as we have assumed, the carrying value of the liability could increase by approximately $29.0 million. Additionally, our probability weighted forecast contemplated a percentage of estimated production volumes flowing to processing facilities based on our historical experience as well as contractual terms and assumptions regarding future market conditions.  The percentage allocated to these facilities ranged from 34% in 2020 and increasing to 100% in 2026. If the flow of production volumes remained at 34% through 2030, the carrying value of the liability could increase by approximately $17.9 million. See also Note 4 and Note 16 for additional information.

Leases. As part of our ongoing effort to reduce general and administrative expense due to both the lower commodity price environment and in conjunction with the sale of our North Louisiana assets, we have vacated one floor in our Fort Worth headquarters. We have recorded an impairment related to this lease of $2.0 million which is included in impairment of proved property and other assets in our consolidated statement of operations for 2020. In fourth quarter 2019, we announced the closing of our Houston office. We recorded an impairment related to our Houston office lease ROU asset of $2.1 million which is also included in impairment of proved property and other assets for the year ended December 31, 2019.

Fair Values-Reported

The following table presents the carrying amounts and the fair values of our financial instruments as of December 31, 2020 and 2019 (in thousands):

	December 31, 2020						December 31, 2019
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, collar, options and basis swaps	$	24,052		$	24,052		$	137,554		$	137,554
Divestiture contingent consideration		15,960			15,960			—			—
Marketable securities (a)		63,942			63,942			62,009			62,009
(Liabilities):
Commodity swaps, collar, options and basis swaps		(36,453	)		(36,453	)		(14,068	)		(14,068	)
Bank credit facility (b)		(702,000	)		(702,000	)		(477,000	)		(477,000	)
5.75% senior notes due 2021 (b)		(25,496	)		(25,474	)		(374,139	)		(375,909	)
5.00% senior notes due 2022 (b)		(169,589	)		(170,128	)		(511,886	)		(501,582	)
5.875% senior notes due 2022 (b)		(48,528	)		(48,471	)		(297,617	)		(294,757	)
Other senior notes due 2022 (b)		(490	)		(490	)		(590	)		(592	)
5.00% senior notes due 2023 (b)		(532,335	)		(521,699	)		(741,531	)		(683,291	)
4.875% senior notes due 2025 (b)		(750,000	)		(707,918	)		(750,000	)		(645,098	)
9.25% senior notes due 2026 (b)		(850,000	)		(888,208	)		—			—
5.75% senior subordinated notes due 2021 (b)		(19,896	)		(19,589	)		(22,214	)		(21,539	)
5.00% senior subordinated notes due 2022 (b)		(9,730	)		(9,247	)		(19,054	)		(17,011	)
5.00% senior subordinated notes due 2023 (b)		(7,712	)		(6,604	)		(7,712	)		(7,654	)
Deferred compensation plan (c)		(96,563	)		(96,563	)		(74,472	)		(74,472	)

^(a) Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges.

^(b) The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs.

^(c) The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

Our current assets and liabilities contain financial instruments, the most significant of which are trade accounts receivables and payables. We believe the carrying values of our current assets and liabilities approximate fair value. Our fair value assessment incorporates a variety of considerations, including (1) the short-term duration of the instruments and (2) our historical incurrence of and expected future insignificance of bad debt expense. Non-financial liabilities initially measured at fair value include asset retirement obligations, operating lease liabilities and the divestiture contract obligation.

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(12) Stock-Based Compensation Plans

Description of the Plans

We have two active equity-based stock plans, our Amended and Restated 2005 Equity-Based Compensation Plan, which we refer to as the 2005 Plan and the Amended and Restated 2019 Equity-Based Compensation Plan, which was approved by our stockholders in May 2019 and amended in May 2020. Under these plans, the Compensation Committee of the board of directors may grant, various awards to non-employee directors and employees. Shares issued as a result of awards granted are generally new common shares but can be funded out of treasury shares, if available.

Total Stock-Based Compensation Expense

Stock-based compensation expense represents amortization of restricted stock and performance units. The following table details the amount of stock-based compensation that is allocated to functional expense categories for each of the years in the three-year period ended December 31, 2020 (in thousands):

	2020		2019			2018
Direct operating expense	$	1,078		$	1,928		$	2,109
Brokered natural gas and marketing expense		1,416			1,856			1,452
Exploration expense		1,279			1,566			1,921
General and administrative expense		32,905			35,061			43,806
Termination costs		2,165			1,971			—
Total stock-based compensation	$	38,843		$	42,382		$	49,288

Unlike the other forms of stock-based compensation expense mentioned above, the mark-to-market of the liability related to the vested restricted stock held in our deferred compensation plans is directly tied to the change in our stock price and not directly related to the functional expenses. Therefore, the liability related to the vested restricted stock held in our deferred compensation plans is not allocated to the functional categories and is reported as deferred compensation plan expense in the accompanying consolidated statements of operations.

In 2020, we recorded $4.3 million additional tax expense for the tax effect of excess financial accounting expense over the corporate income tax deduction for equity compensation vested in the year compared to $3.4 million in 2019 and $3.6 million in 2018.

Stock-Based Awards

Restricted Stock Awards. We grant restricted stock units under our equity-based stock compensation plans. These restricted stock units, which we refer to as restricted stock Equity Awards, generally vest over a three-year period and are contingent on the recipient’s continued employment. These awards are net settled by withholding shares to satisfy income tax withholding payments due upon vesting. The remaining shares are remitted to individual brokerage accounts. The grant date fair value of the Equity Awards is based on the fair market value of our common stock on the date of grant. Shares to be delivered upon vesting are made available from authorized but unissued shares or shares held as treasury stock.

The compensation committee also grants restricted stock to certain employees and non-employee directors of the board of directors as part of their compensation. We also grant restricted stock to certain employees for retention purposes. Compensation expense is recognized over the balance of the vesting period, which is typically three years for employee grants and immediate vesting for non-employee directors. In May 2020, vesting for non-employee directors was changed to one year after grant date. All restricted stock awards are issued at prevailing market prices at the time of the grant and the vesting is based upon an employee’s continued employment with us. Prior to vesting, all restricted stock awards have the right to vote such stock (by the trustee) and receive dividends thereon. Upon grant of these restricted shares, which we refer to as restricted stock Liability Awards, the majority of these shares are generally placed in our deferred compensation plan and, upon vesting, withdrawals are allowed in either cash or in stock. These Liability Awards are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market amount is reported in deferred compensation plan expense in the accompanying consolidated statements of operations. Historically, we have used authorized but unissued shares of stock when restricted stock is granted. However, we also may utilize treasury shares when available.

Stock-Based Performance Units. We grant three types of performance share awards: two of which are based on performance conditions measured against internal performance metrics (Production Growth Awards or “PG-PSUs” and Reserve Growth Awards or “RG-PSUs”) and one based on market conditions measured based on Range’s performance relative to a predetermined peer group (“TSR Award” or “TSR-PSUs”).

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At grant date, each unit represents the value of one share of our common stock. These units are settled in stock and the amount of the payout is based on (1) the vesting percentage, which can be from zero to 200% based on the performance achieved and (2) the value of our common stock on the date payout is determined by the compensation committee. Dividend equivalents may accrue during the performance period and would be paid in stock at the end of the performance period. The performance period for TSR-PSUs is three years. The performance period for the PG-PSUs and RG-PSUs is based on annual performance targets earned over a three-year period.

Restricted Stock – Equity Awards

In 2020, we granted 4.5 million restricted stock Equity Awards to employees which generally vest over a three-year period compared to 2.8 million in 2019 and 1.8 million in 2018. We recorded compensation expense for these awards of $17.8 million in the year ended December 31, 2020 compared to $22.5 million in 2019 and $24.2 million in 2018. As of December 31, 2020, there was $15.1 million of unrecognized compensation related to Equity Awards expected to be recognized over a weighted average period of 1.6 years. Restricted stock Equity Awards are not issued to employees until such time as they are vested and the employees do not have the option to receive cash.

Restricted Stock – Liability Awards

In 2020, we granted 3.5 million shares of restricted stock Liability Awards as compensation to directors and employees at an average price of $3.18. These grants included 217,000 shares issued to non-employee directors, which vest at the end of one year, and 3.3 million shares to employees with vesting generally over a three-year period. In 2019, we granted 1.2 million shares of restricted stock Liability Awards as compensation to directors and employees at an average price of $10.16. This grant included 183,000 shares issued to non-employee directors, which vested immediately, and 1.0 million shares to employees with vesting generally over a three-year period. In 2018, we granted 891,000 shares of restricted stock Liability Awards as compensation to directors and employees at an average price of $15.30. These grants included 146,000 shares issued to non-employee directors, which vested immediately, and 745,000 shares to employees with vesting generally over a three-year period. We recorded compensation expense for these restricted stock Liability Awards of $10.3 million in the year ended December 31, 2020 compared to $9.3 million in 2019 and $11.7 million in 2018. As of December 31, 2020, there was $4.2 million of unrecognized compensation related to restricted stock Liability Awards expected to be recognized over a weighted average period of 1.4 years. A large portion of these awards are held in our deferred compensation plan, are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market amount is reported as deferred compensation expense in our consolidated statements of operations (see additional discussion below). The proceeds received from the sale of stock held in our deferred compensation plan were $696,000 in 2020 compared to $667,000 in 2019 and $9.7 million in 2018. The following is a summary of the status of our non-vested restricted stock outstanding at December 31, 2020:

	Restricted Stock Equity Awards					Restricted Stock Liability Awards
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019		2,002,239		$	12.32		411,126		$	10.94
Granted		4,462,711			3.42		3,535,093			3.18
Vested		(3,063,652	)		6.93		(2,678,013	)		3.94
Forfeited		(585,438	)		8.03		(81,570	)		3.02
Outstanding at December 31, 2020		2,815,860		$	4.97		1,186,636		$	4.18

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Stock-Based Performance Units

Production Growth and Reserve Growth Awards. The PG-PSUs and RG-PSUs vest at the end of the three-year performance period. The performance metrics for each year are set by the compensation committee no later than March 31 of such year. If the performance metric for the applicable period is not met, then that portion is considered forfeited. The following is a summary of our non-vested PG/RG-PSUs award activities at December 31, 2020:

Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019	881,573		$	11.70
Units granted (a)	777,847			2.33
Vested	(101,150	)		15.32
Forfeited (b)	(459,168	)		2.33
Outstanding at December 31, 2020	1,099,102		$	5.92

^(a) Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets.

^(b) For RG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the performance metric is not expected to be met and are considered forfeited. For PG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the payout is estimated at 23% with the remainder considered to be forfeited.

We recorded PG/RG-RSUs compensation expense of $2.7 million in the year ended December 31, 2020 compared to $3.8 million in the year ended December 31, 2019 and $5.4 million in the year ended December 31, 2018. As of December 31, 2020, there was $768,000 of unrecognized compensation related these PSU awards to be recognized over a weighted average period of 1.0 years.

TSR Awards. TSR-PSUs granted are earned, or not earned, based on the comparative performance of Range’s common stock measured against a predetermined group of companies in the peer group over a three-year performance period. The fair value of the TSR-PSUs is estimated on the date of grant using a Monte Carlo simulation model which utilizes multiple input variables that determine the probability of satisfying the market condition stipulated in the award grant and calculates the fair value of the award. The fair value is recognized as stock-based compensation expense over the three-year performance period. Expected volatilities utilized in the model were estimated using a combination of a historical period consistent with the remaining performance period of three years and option implied volatilities. The risk-free interest rate was based on the United States Treasury rate for a term commensurate with the life of the grant. The following assumptions were used to estimate the fair value of the TSR-PSUs granted during the years ended December 31, 2020, 2019 and 2018:

	Year Ended December 31, 2019
	2020			2019			2018
Risk-free interest rate		1.4	%		2.44	%		2.42	%
Expected annual volatility		65	%		46	%		48	%
Grant date fair value per unit	$	3.85		$	11.34		$	18.51

The following is a summary of our non-vested TSR – PSUs award activities:

	Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019		993,452		$	19.00
Granted (a)		610,155			3.85
Vested and issued (b)		(278,184	)		26.12
Forfeited		(75,899	)		26.66
Outstanding at December 31, 2020		1,249,524		$	9.55

^(a) These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

^(b) Includes 278,184 TSR-PSUs awards issued related to 2017 performance where the return on our common stock was in the 60^th percentile for the March 2017 grant and the 80^th percentile for the May 2017 grant. The remaining 2017 awards were considered to be forfeited.

We recorded TSR-PSU compensation expense of $2.4 million in the year ended December 31, 2020 compared to $3.0 million in the year ended December 31, 2019 and $6.3 million in the year ended December 31, 2018. As of December 31, 2020, there was $1.3 million of unrecognized compensation related to these PSU awards to be recognized over a weighted average period of 1.7 years.

F-34

401(k) Plan

We maintain a 401(k) benefit plan that allows employees to contribute up to 75% of their salary (subject to Internal Revenue Service limitations) on a pretax basis. We match up to 6% of salary in cash and vesting of those contributions is immediate. In 2020, we contributed $5.3 million to the 401(k) Plan compared to $5.4 million in 2019 and $5.8 million in 2018. Employees have a variety of investment options in the 401(k) benefit plan.

Deferred Compensation Plan

Our deferred compensation plan gives directors, officers and key employees the ability to defer all or a portion of their salaries and bonuses and invest in Range common stock or make other investments at the individual’s discretion. Range provides a partial matching contribution which vests over three years. The assets of the plans are held in a grantor trust, which we refer to as the Rabbi Trust, and are therefore available to satisfy the claims of our creditors in the event of bankruptcy or insolvency. Our stock held in the Rabbi Trust is treated as a liability award as employees are allowed to take withdrawals from the Rabbi Trust either in cash or in Range stock. The liability for the vested portion of the stock held in the Rabbi Trust is reflected in the deferred compensation liability in the accompanying consolidated balance sheets and is adjusted to fair value each reporting period by a charge or credit to deferred compensation plan expense on our consolidated statements of operations. The assets of the Rabbi Trust, other than our common stock, are invested in marketable securities and reported at their market value in other assets in the accompanying consolidated balance sheets. The deferred compensation liability reflects the vested market value of the marketable securities and Range stock held in the Rabbi Trust. Changes in the market value of the marketable securities and changes in the fair value of the deferred compensation plan liability are charged or credited to deferred compensation plan expense each quarter. We recorded mark-to-market loss of $12.5 million in 2020 compared to a gain of $15.5 million in 2019 and a gain of $18.6 million in 2018. The Rabbi Trust held 6.1 million shares (5.0 million of vested shares) of Range stock at December 31, 2020 compared to 3.2 million (2.7 million of vested shares) at December 31, 2019.

Other Post-Retirement Benefits

We have a post retirement benefit plan to assist in providing health care to officers who are active employees (including their spouses) and have met certain age and service requirements. These benefits are not funded in advance and are provided up to age 65 or on the date they become eligible for Medicare, subject to various cost-sharing features. The change in our post-retirement benefit obligation is as follows (in thousands):

Change in Benefit Obligation:	2020			2019
Benefit obligation at beginning of year	$	1,957		$	1,355
Service cost		80			88
Interest cost		50			68
Actuarial (gain) loss		(39	)		532
Benefits paid		(95	)		(86	)
Benefit obligation at end of year	$	1,953		$	1,957
Amounts recognized in the consolidated balance sheet:
Long-term liabilities	$	1,953		$	1,957
Components of Net Periodic Post Retirement Benefit Cost:
Service cost	$	80		$	88
Interest cost		50			68
Amortization of prior service cost		369			369
Net periodic post retirement costs (recognized in general and administrative expense)	$	499		$	525
Other Changes in Benefit Obligations in Other Comprehensive Income (Loss):
Net (gain) loss	$	(39	)	$	532
Prior service cost		—			—
Amortization of prior service cost		(369	)		(369	)
Total recognized in other comprehensive (loss) income	$	(408	)	$	163
Total recognized in net periodic benefit cost and other comprehensive income	$	91		$	688

F-35

The following summarizes the assumptions used to determine the benefit obligation at December 31, 2020 and 2019:

	December 31, 2020			December 31, 2019
Weighted average assumptions used to determine benefit obligation:
Discount rate		1.9	%		2.9	%
Assumed weighted average healthcare cost trend rates:
Initial healthcare trend rate		6.5	%		6.5	%
Ultimate trend rate		4.5	%		4.5	%
Year ultimate trend rate reached		2024			2023

The expected future benefit payments under our post-retirement benefit plan for the next ten years is $914,000 for the five year period 2021 through 2025 and $371,000 for the five year period 2026 through 2030. The estimated prior service cost that will be amortized from accumulated other comprehensive loss into our statements of operations in 2021 is $369,000.

(13) Capital Stock

We have authorized capital stock of 485.0 million shares, which includes 475.0 million shares of common stock and 10.0 million shares of preferred stock. The following is a schedule of changes in the number of common shares outstanding since the beginning of 2019:

	Year Ended December 31,
	2020			2019
Beginning balance		249,630,803			249,510,022
Restricted stock grants		3,390,358			1,186,290
Restricted stock units vested		1,226,473			720,212
Performance stock units issued		279,420			12,283
Performance stock dividends		18,700			464
Treasury shares		(8,197,662	)		(1,798,468	)
Ending balance		246,348,092			249,630,803

Common Stock Dividends

The board of directors declared quarterly dividends of $0.02 per common share for each of the four quarters of 2019 and 2018. In January 2020, we announced that the board had suspended the dividend. The determination of the amount of future dividends, if any, to be declared and paid is at the sole discretion of the board of directors and will depend on our financial condition, earnings, capital requirements, levels of indebtedness, our future business prospects and other matters our board of directors deem relevant. Our bank credit facility and our senior subordinated notes allow for the payment of common dividends, with certain limitations, as described in the indentures governing each of our notes.

Stock Repurchase Program

In October 2019, the board of directors approved a new stock purchase program to acquire up to $100 million of our outstanding stock. The following is a schedule of the change in treasury shares since the beginning of 2019:

	Year Ended December 31,
	2020			2019
Beginning balance		1,808,133			9,665
Rabbi trust shares distributed and/or sold		(2,338	)		(1,532	)
Shares repurchased		8,200,000			1,800,000
Ending balance		10,005,795			1,808,133

F-36

(14) Supplemental Cash Flow Information

	Year Ended December 31,
	2020			2019			2018
	(in thousands)
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$	343		$	—		$	7,521
Interest paid		(168,471	)		(189,443	)		(207,433	)
Non-cash investing and financing activities included:
Asset retirement costs capitalized, net	$	2,610		$	11,193		$	28,826
Decrease in accrued capital expenditures		(23,625	)		(20,104	)		(119,021	)

(15) Commitments and Contingencies

Litigation

We are the subject of, or party to, a number of pending or threatened legal actions and administrative proceedings arising in the ordinary course of our business including, but not limited to, royalty claims, contract claims and environmental claims. While many of these matters involve inherent uncertainty, we believe that the amount of the liability, if any, ultimately incurred with respect to proceedings or claims will not have a material adverse effect on our consolidated financial position as a whole or on our liquidity, capital resources or future annual results of operations.

When deemed necessary, we establish reserves for certain legal proceedings. The establishment of a reserve is based on an estimation process that includes the advice of legal counsel and subjective judgment of management. While management believes these reserves to be adequate, it is reasonably possible we could incur additional losses with respect to those matters in which reserves have been established. We will continue to evaluate our litigation on a quarterly basis and will establish and adjust any litigation reserves as appropriate to reflect our assessment of the then current status of litigation.

We have incurred and will continue to incur capital, operating and remediation expenditures as a result of environmental laws and regulations. As of December 31, 2020 and 2019, liabilities for remediation were not material. We are not aware of any environmental claims existing as of December 31, 2020 that have not been provided for or would otherwise have a material impact on our financial position or results of operations. Environmental liabilities normally involve estimates that are subject to revision until final resolution, settlement or remediation occurs.

Obligations Following Divestitures

Certain contractual obligations were retained by us after our divestiture of our North Louisiana assets. These obligations are primarily related to gathering, processing and transportation agreements including certain minimum volume commitments. For additional information see Note 4, Note 11 and Note 16.

Lease Commitments

The components of our total lease expense for the two years ended December 31, 2020, the majority of which is included in general and administrative expense, are as follows (in thousands):

		Year Ended December 31,
		2020			2019
Operating lease cost	$	27,895		$	15,536
Variable lease expense (1)		33,849			6,916
Short-term lease expense (2)		1,866			2,965
Sublease income		(3,199	)		(3,496	)
Total lease expense	$	60,411		$	21,921
Short-term lease costs (3)	$	15,984		$	29,126

(1)   Variable lease payments that are not dependent on an index or rate are not included in the lease liability or ROU assets.

(2)   Short-term lease expense represents expense related to leases with a contract term of one year or less.

(3)   These short-term lease costs are related to leases with a contract term of one year or less and the majority of which are related to drilling rigs and are capitalized as part of natural gas and oil properties on our consolidated balance sheets and may fluctuate based on the number of drilling rigs being utilized.

F-37

Supplemental cash flow information related to our operating leases is included in the table below (in thousands):

			Year Ended December 31,
		2020			2019
Cash paid for amounts included in the measurement of lease liabilities	$	32,030		$	18,700
ROU assets added in exchange for lease obligations	$	27,769		$	24,839

Supplemental balance sheet information related to our operating leases is included in the table below (in thousands):

			Year Ended December 31,
		2020				2019
Operating lease ROU assets	$	63,581			$	62,053
Accrued liabilities – current	$	(24,673		)	$	(27,856	)
Operating lease liabilities – long-term	$	(43,155		)	$	(41,068	)

As part of our ongoing effort to reduce general and administrative expenses due to both the lower commodity price environment and in conjunction with the sale of our North Louisiana assets, we vacated one floor in our Fort Worth headquarters. We recorded an impairment related to this lease of $2.0 million in the year ended December 31, 2020. In addition, in fourth quarter 2019, we announced the closing of our Houston office. We recorded an impairment related to our Houston office lease ROU asset of $2.1 million for the year ended December 31, 2019. These charges are included in impairment of proved property and other assets in our consolidated statements of operations.

Our weighted average remaining lease term and weighted average discount rate for our operating leases are as follows:

	Year Ended December 31,
	2020	2019
Weighted average remaining lease term	4.0 years	4.6 years
Weighted average discount rate	6%	6%

Our lease liabilities with enforceable contract terms that are greater than one year mature as follows (in thousands):

		Operating Leases
2021	$	27,850
2022		20,868
2023		6,866
2024		6,468
2025		6,468
Thereafter		8,795
Total lease payments		77,315
Less effects of discounting		(9,487	)
Total lease liability	$	67,828

F-38

Transportation, Gathering and Processing Contracts

We have entered into firm transportation and gathering contracts with various pipeline carriers for the future transportation and gathering of natural gas, NGLs and oil production from our properties in Pennsylvania. Under these contracts, we are obligated to transport, process or gather minimum daily natural gas volumes, or pay for any deficiencies at a specified reservation fee rate. Our production committed to these pipelines is currently expected to exceed the minimum daily volumes provided in the contracts. However, if in the future we fail to deliver the committed volumes, we would recognize a deficiency payment in the period in which the under delivery takes place and the related liability has been incurred. As of December 31, 2020, future minimum transportation, processing and gathering fees under our commitments are as follows (in thousands):

	Transportation, Gathering and Processing Contracts (a)
2021	$	837,792
2022		818,569
2023		782,130
2024		766,474
2025		680,757
Thereafter		4,138,532
	$	8,024,254

^(a) The amounts in this table represent the gross amounts that we are committed to pay; however, we will record in our financial statements our proportionate share of costs based on our working interest which can vary based on volumes produced.

In addition to the amounts included in the above table, we have entered into an additional agreement which is contingent on certain pipeline modifications and/or construction for natural gas volumes of 25,000 mcf per day and is expected to begin in 2022 with a six-year term.

Not included in the table above is our estimate of accrued contractual obligations related to certain obligations retained by us after our divestiture of our North Louisiana assets. These contractual obligations are related to gathering, processing and transportation agreements including certain minimum volume commitments. There are inherent uncertainties surrounding the retained obligation and, as a result, the determination of the accrued obligation required significant judgement and estimation. The actual settlement amount and timing may differ from our estimates. See also Note 4 and Note 11. As of December 31, 2020, the carrying value of this obligation was $484.1 million (discounted) and is included in divestiture contract obligation in our consolidated balance sheet. As of December 31, 2020, our estimated settlement of this retained obligation based on a discounted value is as follows (in thousands):

	Divestiture Contract Obligation
2021	$	92,593
2022		74,942
2023		62,639
2024		54,042
2025		47,704
Thereafter		152,175
	$	484,095

F-39

Delivery Commitments

We have various volume delivery commitments that are related to our Marcellus Shale properties. We expect to be able to fulfill our contractual obligations from our own production; however, we may purchase third-party volumes to satisfy our commitments or pay demand fees for commitment shortfalls, should they occur. As of December 31, 2020, our delivery commitments through 2031 were as follows:

Year Ending December 31,	Natural Gas (mmbtu per day)		Ethane and Propane (bbls per day)
2021		476,877	35,000
2022		477,679	35,000
2023		292,423	35,000
2024		211,216	35,000
2025		170,000	35,000
2026		158,301	35,000
2027		100,000	35,000
2028		100,000	35,000
2029		100,000	20,000
2030-2031		—	20,000

In addition to the amounts included in the above table, we have contracted with a pipeline company through 2035 to deliver ethane production volumes from our Marcellus Shale wells. These agreements and related fees, which are contingent upon facility construction and/or modification, are for 3,000 bbls per day starting in 2021 and increasing to 18,000 bbls per day in 2027 and to 25,000 bbls per day in 2029 through 2033 and declining to 10,000 bbls per day for the remainder of the term.    

Other

We also have lease acreage that is generally subject to expiration if initial wells are not drilled within a specified period, generally between three and five years. We do not expect to lose significant lease acreage because of failure to drill due to inadequate capital, equipment or personnel. However, based on our evaluation of prospective economics, we have allowed acreage to expire and will allow additional acreage to expire in the future. To date, our expenditures to comply with environmental or safety regulations have not been a significant component of our cost structure and are not expected to be significant in the future. However, new regulations, enforcement policies, claims for damages or other events could result in significant future costs.

(16) Exit and Termination Costs

Exit Costs

In August 2020, we sold our North Louisiana assets and retained certain gathering, transportation and processing obligations which extend into 2030. These are contracts where we will not realize any future benefit. The estimated obligations are included in current and long-term divestiture contract obligation in our consolidated balance sheet. The present value of our estimated obligations was recorded as an exit cost which totaled $479.8 million in third quarter 2020. Also associated with this sale, we agreed to pay a midstream company $28.5 million to reduce our financial obligation related to the minimum volume commitments associated with this asset which was also recorded as an exit cost in third quarter 2020.

In second quarter 2020, we negotiated capacity releases on certain transportation pipelines in Pennsylvania effective May 31, 2020 and extending through the remainder of the contract. As a result of these releases, we recorded exit costs of $10.4 million which represents the discounted present value of our remaining obligations to the third party.

F-40

Termination Costs

In third quarter 2020, we completed the sale of our North Louisiana assets and we recorded $2.5 million of severance costs and stock-based compensation expense. In third quarter 2020, we also announced an additional reduction in our work force as we continue to focus on lowering administrative expenses and recorded $3.7 million of severance costs and stock-based compensation expense related to this reduction in force. In first quarter 2020, we completed the sale of our shallow legacy assets in Northwest Pennsylvania and we recorded $1.4 million of severance costs which is primarily related to the sale of these assets. In 2019, we sold various non-core assets in Pennsylvania and accrued $819,000 of severance costs related to this sale. In second quarter 2019, we announced another reduction in our work force and recorded $2.2 million of severance costs related to this work force reduction. The following summarizes our exit and termination costs for the three years ended December 31, 2020, 2019 and 2018 (in thousands):

	Year Ended December 31,
	2020		2019			2018
Severance costs	$	5,909	$	7,535	$	(356	)
Transportation contract capacity releases (including accretion of    discount)		10,900		—		—
Divestiture contract obligation (including accretion of discount)		499,935		—		—
One-time minimum volume commitment contract payment		28,500		—		—
Stock-based compensation and other		2,165		1,971		(17	)
	$	547,409	$	9,506	$	(373	)

The following details the accrued exit and termination cost liability activity for the years ended December 31, 2020 and 2019 (in thousands):

	Exit Costs			Termination Costs
Balance at December 31, 2018	$	—		$	—
Accrued severance costs		—			7,535
Payments		—			(2,843	)
Balance at December 31, 2019		—			4,692
Accrued severance costs		—			5,909
Accrued contract obligations		490,114			—
Accretion of discount		20,720			—
Payments		(17,291	)		(9,147	)
Balance at December 31, 2020	$	493,543		$	1,454

(17) Suspended Exploratory Well Costs

We capitalize exploratory well costs until a determination is made that the well has either found proved reserves or that it is impaired. Capitalized exploratory well costs are presented in natural gas and oil properties in the accompanying consolidated balance sheets. If an exploratory well is determined to be impaired, the well costs are charged to exploration expense in the accompanying consolidated statements of operations. The following table reflects the changes in capitalized exploratory well costs for the year ended December 31, 2020. We had no capitalized exploratory well costs for the years ended December 31, 2019 and 2018 (in thousands):

		2020
Balance at beginning of period	$	—
Additions to capitalized exploratory well costs pending the determination of proved reserves		7,709
Reclassifications to wells, facilities and equipment based on determination of proved reserves		—
Capitalized exploratory well costs, charged to expense		—
Balance at end of period	$	7,709
Less exploratory well costs that have been capitalized for a period of one year or less	$	7,709
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$	—

F-41

 (18) Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited)

In connection with our year-end financial close process and related preparation of our 2020 Annual Report on Form 10-K, a misstatement of deferred income taxes was identified in our previously filed 2020 unaudited interim financial statements. We assessed the materiality of this error in accordance with the U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 99, Materiality and have concluded that our interim financial information as filed in each of our 2020 Quarterly Reports on Form 10-Q should be restated. This misstatement is the result of an error in management’s conclusions regarding the realizability of deferred tax assets resulting from changes to the tax law under the Coronavirus Aid, Relief and Economic Security Act (also known as the CARES Act) and has resulted in a change to deferred tax expense (benefit) which has been corrected in the tables below. This correction also includes previously identified immaterial errors in those periods, which also is related to the accounting for income taxes. There was no impact on our net cash flows from operating activities, investing activities or financing activities. As of December 31, 2020, we have $3.2 billion of federal net operating loss carryforwards.

The effects of this error on our previously reported 2020 quarterly statements of operations on a quarter-to-date basis are as follows (in thousands, except per share data):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total revenues and other     income	$	693,920		$	376,546		$	299,345		$	—		$	—		$	—		$	693,920		$	376,546		$	299,345
Total costs and expenses		498,727			566,395			1,084,644			—			—			—			498,727			566,395			1,084,644
Income (loss) before     income taxes		195,193			(189,849	)		(785,299	)		—			—			—			195,193			(189,849	)		(785,299	)
Income tax (benefit) expense
Current		(363	)		(3	)		—			—			—			—			(363	)		(3	)		—
Deferred		50,581			(43,277	)		(105,251	)		(21,220	)		21,014			68,742			29,361			(22,263	)		(36,509	)
		50,218			(43,280)			(105,251	)		(21,220	)		21,014			68,742			28,998			(22,266	)		(36,509	)
Net income (loss)	$	144,975		$	(146,569)		$	(680,048	)	$	21,220		$	(21,014	)	$	(68,742	)	$	166,195		$	(167,583	)	$	(748,790	)
Net income (loss) per     common share:
Basic	$	0.58		$	(0.61	)	$	(2.83	)	$	0.09		$	(0.09	)	$	(0.29	)	$	0.67		$	(0.70	)	$	(3.12	)
Diluted	$	0.58		$	(0.61	)	$	(2.83	)	$	0.08		$	(0.09	)	$	(0.29	)	$	0.66		$	(0.70	)	$	(3.12	)
Comprehensive     income (loss)	$	145,048		$	(146,498	)	$	(679,978	)	$	21,220		$	(21,014	)	$	(68,742	)	$	166,268		$	(167,512	)	$	(748,720	)

The effects of this error on our previously reported 2020 quarterly statements of operations on a year-to-date basis are as follows (in thousands, except per share data):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total revenues and other      income	$	693,920		$	1,070,466		$	1,369,811		$	—		$	—		$	—		$	693,920		$	1,070,466		$	1,369,811
Total costs and expenses		498,727			1,065,122			2,149,766			—			—			—			498,727			1,065,122			2,149,766
Income (loss) before     income taxes		195,193			5,344			(779,955	)		—			—			—			195,193			5,344			(779,955	)
Income tax (benefit) expense
Current		(363	)		(366	)		(366	)		—			—			—			(363	)		(366	)		(366	)
Deferred		50,581			7,304			(97,947	)		(21,220	)		(206	)		68,536			29,361			7,098			(29,411	)
		50,218			6,938			(98,313	)		(21,220	)		(206	)		68,536			28,998			6,732			(29,777	)
Net income (loss)	$	144,975		$	(1,594	)	$	(681,642	)	$	21,220		$	206		$	(68,536	)	$	166,195		$	(1,388	)	$	(750,178	)
Net income (loss) per     common share:
Basic	$	0.58		$	(0.01	)	$	(2.82	)	$	0.09		$	—		$	(0.28	)	$	0.67		$	(0.01	)	$	(3.10	)
Diluted	$	0.58		$	(0.01	)	$	(2.82	)	$	0.08		$	—		$	(0.28	)	$	0.66		$	(0.01	)	$	(3.10	)
Comprehensive     income (loss)	$	145,048		$	(1,450	)	$	(681,428	)	$	21,220		$	206		$	(68,536	)	$	166,268		$	(1,244	)	$	(749,964	)

F-42

The effects of this error on our previously reported 2020 quarterly balance sheets are as follows (in thousands):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total current assets	$	467,117		$	331,839		$	209,147		$	—		$	—		$	—		$	467,117		$	331,839		$	209,147
Total non-current    assets	$	6,122,521		$	6,120,372		$	5,803,751		$	—		$	—		$	—		$	6,122,521		$	6,120,372		$	5,803,751
Total current liabilities	$	490,125		$	530,253		$	630,120		$	—		$	—		$	—		$	490,125		$	530,253		$	630,120
Total non-current    liabilities	$	3,624,925		$	3,586,142		$	3,720,274		$	(21,220)		$	(206)		$	68,536		$	3,603,705		$	3,585,936		$	3,788,810
Deferred tax liabilities	$	210,803		$	167,548		$	62,319		$	(21,220	)	$	(206	)	$	68,536		$	189,583		$	167,342		$	130,855
Total liabilities	$	4,115,050		$	4,116,395		$	4,350,394		$	(21,220	)	$	(206	)	$	68,536		$	4,093,830		$	4,116,189		$	4,418,930
Retained deficit	$	(3,161,859	)	$	(3,308,502	)	$	(3,988,550	)	$	21,220		$	206		$	(68,536	)	$	(3,140,639	)	$	(3,308,296	)	$	(4,057,086	)
Total stockholders’    equity	$	2,474,588		$	2,335,816		$	1,662,504		$	21,220		$	206		$	(68,536	)	$	2,495,808		$	2,336,022		$	1,593,968
Total liabilities and    stockholders’ equity	$	6,589,638		$	6,452,211		$	6,012,898		$	—		$	—		$	—		$	6,589,638		$	6,452,211		$	6,012,898

(19) Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited)

Our natural gas and oil producing activities are conducted onshore within the continental United States and all of our proved reserves are located within the United States.

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization ^(a)

	December 31,
	2020			2019			2018
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	8,891,348		$	9,345,557		$	10,974,929
Unproved properties		859,766			868,180			2,110,277
Total		9,751,114			10,213,737			13,085,206
Accumulated depreciation, depletion and amortization		(4,064,305	)		(4,172,702	)		(4,062,021	)
Net capitalized costs	$	5,686,809		$	6,041,035		$	9,023,185

^(a) Includes capitalized asset retirement costs and the associated accumulated amortization.

Costs Incurred for Property Acquisition, Exploration and Development ^(a)

	December 31,
	2020		2019		2018
	(in thousands)
Acquisitions
Acreage purchases	$	26,166	$	57,324	$	62,390
Oil and gas properties		—		—		1,683
Development		369,093		666,984		834,552
Exploration:
Drilling		7,709		—		1,380
Expense		31,376		35,117		32,196
Stock-based compensation expense		1,279		1,566		1,921
Gas gathering facilities:
Development		3,694		3,583		10,218
Subtotal		439,317		764,574		944,340
Asset retirement obligations		2,610		11,193		28,826
Total costs incurred	$	441,927	$	775,767	$	973,166

^(a) Includes cost incurred whether capitalized or expensed.

F-43

Reserve Audit

All reserve information in this report is based on estimates prepared by our petroleum engineering staff. At year-end 2020, Netherland, Sewell & Associates, Inc., an independent petroleum consultant, conducted an audit of our 2020 reserves in Appalachia. These engineers were selected for their geographic expertise and their historical experience in engineering certain properties. At December 31, 2020, our consultant audited approximately 97% of our proved reserves. A copy of the summary reserve report prepared by our independent petroleum consultant is included as an exhibit to this Annual Report on Form 10-K. The technical professional at our independent petroleum consulting firm responsible for reviewing the reserve estimates presented herein meets the requirements regarding qualifications, independence, objectivity and confidentiality set forth in the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers. We maintain an internal staff of petroleum engineers and geoscience professionals who work closely with our independent petroleum consultant to ensure the integrity, accuracy and timeliness of data furnished during the reserves audit process. Throughout the year, our technical team meets periodically with representatives of our independent petroleum consultant to review properties and discuss methods and assumptions. While we have no formal committee specifically designated to review reserves reporting and the reserves estimation process, our senior management reviews and approves any significant changes to our proved reserves. We provide historical information to our consultant for our largest producing properties such as ownership interest, natural gas, NGLs and oil production, well test data, commodity prices and operating and development costs. The consultants perform an independent analysis and differences are reviewed with our Senior Vice President of Reservoir Engineering and Economics. In some cases, additional meetings are held to review identified reserve differences. The reserve auditor estimates of proved reserves and the pretax present value of such reserves discounted at 10% did not differ from our estimates by more than 10% in the aggregate. However, when compared lease-by-lease, field-by-field or area-by-area, some of our estimates may be greater and some may be less than the estimates of our reserve auditor. When such differences do not exceed 10% in the aggregate, our reserve auditor is satisfied that the proved reserves and pretax present value of such reserves discounted at 10% are reasonable and will issue an unqualified opinion. Remaining differences are not resolved due to the limited cost benefit of continuing such analysis.

Historical variances between our reserve estimates and the aggregate estimates of our independent petroleum consultants have been less than 5%. All of our reserve estimates are reviewed and approved by our Senior Vice President of Reservoir Engineering and Economics, who reports directly to our President and Chief Executive Officer. Mr. Alan Farquharson, our Senior Vice President of Reservoir Engineering and Economics, holds a Bachelor of Science degree in Electrical Engineering from the Pennsylvania State University. Before joining Range, he held various technical and managerial positions with Amoco, Hunt Oil and Union Pacific Resources and has more than forty years of engineering experience in the oil and gas industry. During the year, our reserves group may also perform separate, detailed technical reviews of reserve estimates for significant acquisitions or for properties with problematic indicators such as excessively long lives, sudden changes in performance or changes in economic or operating conditions.

Estimated Quantities of Proved Oil and Gas Reserves

Reserves of natural gas, NGLs, crude oil and condensate are estimated by our petroleum engineering staff and are adjusted to reflect contractual arrangements and royalty rates in effect at the end of each year. Many assumptions and judgmental decisions are required to estimate reserves. Reported quantities are subject to future revisions, some of which may be substantial, as additional information becomes available from reservoir performance, new geological and geophysical data, additional drilling, technological advancements, price changes, production taxes and other economic factors.

The SEC defines proved reserves as those volumes of natural gas, NGLs, crude oil and condensate that geological and engineering data demonstrate with reasonable certainty are recoverable in future years from known reservoirs under existing economic and operating conditions. Proved developed reserves are those proved reserves which can be expected to be recovered from existing wells with existing equipment and operating methods. Proved undeveloped reserves are volumes expected to be recovered from new wells on undrilled acreage or from existing wells where a relatively major expenditure is required for recompletion. Reserves on undrilled acreage shall be limited to those drilling units offsetting productive units that are reasonably certain of production when drilled. Proved reserves for other undrilled units can be claimed only where it can be demonstrated with certainty that there is continuity of production from the existing productive formation. Proved undeveloped reserves can only be assigned to acreage for which improved recovery technology is contemplated when such techniques have been proven effective by actual tests in the area and in the same reservoir. Undrilled locations can be classified as having undeveloped reserves only if a development plan has been adopted indicating each location is scheduled to be drilled within five years from the date it was booked as proved reserves, unless specific circumstances justify a longer time.

The reported value of proved reserves is not necessarily indicative of either fair market value or present value of future net cash flows because prices, costs and governmental policies do not remain static, appropriate discount rates may vary, and extensive judgment is required to estimate the timing of production. Other logical assumptions would likely have resulted in significantly different amounts.

F-44

The average realized prices used at December 31, 2020 to estimate reserve information were $30.13 per barrel of oil, $16.14 per barrel of NGLs and $1.68 per mcf for gas using a benchmark (NYMEX) of $39.77 per barrel and $1.98 per MMbtu. The average realized prices used at December 31, 2019 to estimate reserve information were $49.24 per barrel of oil, $17.32 per barrel of NGLs and $2.38 per mcf for gas using a benchmark (NYMEX) of $55.73 per barrel and $2.58 per Mmbtu. The average realized prices used at December 31, 2018 to estimate reserve information were $59.96 per barrel of oil, $25.22 per barrel of NGLs and $2.98 per mcf for gas using a benchmark (NYMEX) of $65.55 per barrel and $3.10 per Mmbtu.

	Natural Gas			NGLs			Crude Oil and Condensate			Natural Gas Equivalents
	(Mmcf)			(Mbbls)			(Mbbls)			(Mmcfe) (a)
Proved developed and undeveloped reserves:
Balance, December 31, 2017		10,263,649			763,264			69,854			15,262,361
Revisions		178,595			84,993			7,197			731,735
Extensions, discoveries and additions		2,269,427			128,436			17,309			3,143,898
Property sales		(135,884	)		(16,774	)		(4,276	)		(262,180	)
Production		(548,085	)		(38,325	)		(4,228	)		(803,408	)
Balance, December 31, 2018		12,027,702			921,594			85,856			18,072,406
Revisions		33,122			57,311			(12,320	)		303,068
Extensions, discoveries and additions		959,901			26,505			7,057			1,161,274
Property sales		(327,634	)		(28,324	)		(2,371	)		(511,811	)
Production		(578,114	)		(38,850	)		(3,690	)		(833,354	)
Balance, December 31, 2019		12,114,977			938,236			74,532			18,191,583
Revisions		(789,992	)		42,741			(12,444	)		(608,211	)
Extensions, discoveries and additions		1,007,415			38,298			4,512			1,264,282
Property sales		(609,311	)		(30,317	)		(6,145	)		(828,084	)
Production		(574,529	)		(37,492	)		(2,829	)		(816,456	)
Balance, December 31, 2020		11,148,560			951,466			57,626			17,203,114
Proved developed reserves:
December 31, 2018		6,451,012			512,318			38,658			9,756,870
December 31, 2019		6,486,211			535,007			34,369			9,902,468
December 31, 2020		6,350,057			550,771			22,976			9,792,540
Proved undeveloped reserves:
December 31, 2018		5,576,690			409,276			47,198			8,315,536
December 31, 2019		5,628,766			403,229			40,163			8,289,115
December 31, 2020		4,798,503			400,695			34,650			7,410,574

^(a)  Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

During 2020, we added approximately 1.3 Tcfe of proved reserves from drilling activities and evaluation of proved areas in the Marcellus Shale. Approximately 80% of the 2020 reserve additions are attributable to natural gas.  Revisions of previous estimates of a negative 608.2 Bcfe include positive performance revisions of 420.9 Bcfe which were more than offset by 961.1 Bcfe reclassified to unproved for previously planned wells not to be drilled within the original five-year development horizon and negative pricing revisions of 67.9 Bcfe.

During 2019, we added approximately 1.2 Tcfe of proved reserves from drilling activities and evaluation of proved areas in the Marcellus Shale. Approximately 83% of the 2019 reserve additions are attributable to natural gas. Included in 2019 proved reserves is a total of 475.0 Mmbbls of ethane reserves (2,102 Bcfe) in the Marcellus Shale. Revisions of previous estimates of 303 Bcfe include positive performance revisions of 922.2 Bcfe which were partially offset by 601.3 Bcfe reclassified to unproved and negative pricing revisions of 17.8 Bcfe.

F-45

During 2018, we added approximately 3.1 Tcfe of proved reserves from drilling activities and evaluation of proved areas primarily in the Marcellus Shale. Approximately 72% of the 2019 reserve additions are attributable to natural gas. Included in 2018 proved reserves is a total of 468.9 Mmbbls of ethane reserves (2,075 Bcfe) in the Marcellus Shale. Revisions of previous estimates of 732 Bcfe include positive pricing and performance revisions of 957 Bcfe and unproved recoveries of 154 Bcfe which were partially offset by 379 Bcfe reclassified to unproved for previously planned wells not to be drilled within the original five-year development horizon.

The following details the changes in proved undeveloped reserves for 2020 (Mmcfe):

Beginning proved undeveloped reserves at December 31, 2019	8,289,115
Undeveloped reserves transferred to developed	(1,258,551	)
Revisions (a)	(675,150	)
Sales	(175,274	)
Extension and discoveries	1,230,434
Ending proved undeveloped reserves at December 31, 2020	7,410,574

^(a) Includes 961 Bcfe of proved undeveloped reserves removed and deferred due to the five-year rule which can be included in our future proved reserves as these locations are added back to our five-year development plan.

During 2020, we spent approximately $284.9 million in development costs related to proved undeveloped reserves that were transferred to developed reserves. Estimated future development costs of proved undeveloped reserves are projected to be approximately $2.4 billion over the next five years. As of December 31, 2020, we have 62 Bcfe that have been reported for more than five years from their original date of booking, all of which are in the process of being completed and are expected to turn to sales in 2021. All of our recorded proved undeveloped drilling locations are scheduled to be drilled within five years of initial disclosure. All proved undeveloped drilling locations are scheduled to be drilled prior to the end of 2025.

Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves (Unaudited)

The following summarizes the policies we used in the preparation of the accompanying natural gas, NGLs, crude oil and condensate reserve disclosures, standardized measures of discounted future net cash flows from proved natural gas, NGLs and oil reserves and the reconciliations of standardized measures from year to year. The information disclosed is an attempt to present the information in a manner comparable with industry peers.

The information is based on estimates of proved reserves attributable to our interest in natural gas and oil properties as of December 31 of the years presented. These estimates were prepared by our petroleum engineering staff. Proved reserves are estimated quantities of natural gas, NGLs, crude oil and condensate, which geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions.

The standardized measure of discounted future net cash flows from production of proved reserves was developed as follows:

1. Estimates are made of quantities of proved reserves and future amounts expected to be produced based on current year-end economic conditions.

2. For the years ended 2020, 2019 and 2018, estimated future cash inflows are calculated by applying a twelve-month average price of natural gas, NGLs and oil relating to our proved reserves to the quantities of those reserves produced in each future year.

3. Future cash flows are reduced by estimated production costs, administrative costs, costs to develop and produce the proved reserves and abandonment costs, all based on current year-end economic conditions. Future income tax expenses are based on current year-end statutory tax rates giving effect to the remaining tax basis in the natural gas, NGLs and oil properties, other deductions, credits and allowances relating to our proved natural gas and oil reserves.

4. The resulting future net cash flows are discounted to present value by applying a discount rate of 10%.

The standardized measure of discounted future net cash flows does not purport, nor should it be interpreted, to present the fair value of our natural gas, NGLs and oil reserves. An estimate of fair value would also take into account, among other things, the recovery of reserves not presently classified as proved, anticipated future changes in prices and costs and a discount factor more representative of the time value of money and the risks inherent in reserve estimates.

F-46

The standardized measure of discounted future net cash flows relating to proved natural gas, NGLs, crude oil and condensate reserves is as follows and excludes cash flows associated with derivatives outstanding at each of the respective reporting dates. Future cash inflows are net of third-party transportation, gathering and compression expense.

	As of December 31,
	2020			2019
	(in thousands)
Future cash inflows	$	35,820,758		$	48,718,733
Future costs:
Production		(23,281,268	)		(23,320,477	)
Development (a)		(2,744,539	)		(3,219,349	)
Future net cash flows before income taxes		9,794,951			22,178,907
Future income tax expense		(1,240,011	)		(4,179,297	)
Total future net cash flows before 10% discount		8,554,940			17,999,610
10% annual discount		(5,708,618	)		(11,371,037	)
Standardized measure of discounted future net cash flows	$	2,846,322		$	6,628,573

^(a) 2020 includes $313.1 million of undiscounted future asset retirement costs estimated as of December 31, 2020, using current estimates of future abandonment costs.

The following table summarizes changes in the standardized measure of discounted future net cash flows.

	December 31,
	2020			2019			2018
	(in thousands)
Revisions of previous estimates:
Changes in prices and production costs	$	(4,868,371	)	$	(6,560,107	)	$	2,959,488
Revisions in quantities		(345,073	)		(12,741	)		667,763
Changes in future development and abandonment costs		107,899			104,585			(686,632	)
Net change in income taxes		797,816			1,125,639			(1,075,867	)
Accretion of discount		756,083			1,317,349			814,725
Additions to proved reserves from extensions, discoveries and improved recovery		280,441			552,710			2,543,296
Natural gas, NGLs and oil sales, net of production costs		(402,450	)		(881,883	)		(1,547,580	)
Actual development costs incurred during the period		384,530			676,520			851,188
Sales of reserves in place		(394,125	)		(688,937	)		(226,953	)
Timing and other		(99,001	)		(120,156	)		(349,048	)
Net change for the year		(3,782,251	)		(4,487,021	)		3,950,380
Beginning of year		6,628,573			11,115,594			7,165,214
End of year	$	2,846,322		$	6,628,573		$	11,115,594

F-47

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

None.

ITEM 9A.  CONTROLS AND PROCEDURES

Evaluation of Disclosure Controls and Procedures. As required by Rule 13a-15(b) under the Exchange Act, we have evaluated, under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) as of the end of the period covered by this Form 10-K. Our disclosure controls and procedures are designed to provide reasonable assurance that information required to be disclosed by us in reports that we file under the Exchange Act is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosure and is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the SEC. Based upon the evaluation, our principal executive officer and principal financial officer concluded that due to a material weakness in our internal control over financial reporting as described in the “Management’s Report on Internal Control over Financial Reporting” on Page F-2, under Item 8. Financial Statements and Supplementary Data, our disclosure controls and procedures were not effective as of December 31, 2020.

Changes in Internal Controls over Financial Reporting. Other than the identification of the material weakness as described in “Management’s Report on Internal Control over Financial Reporting” on page F-2, there have been no changes in our system of internal control over financial reporting during the quarter ended December 31, 2020 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

Management’s Annual Report on Internal Control over Financial Reporting. See “Management’s Report on Internal Control over Financial Reporting” and “Report of Independent Registered Public Accounting Firm on Internal Control Over Financial Reporting” which appear on pages F-2 and F-3, respectively, under Item 8. Financial Statements and Supplementary Data.

ITEM 9B. OTHER INFORMATION

None.

63

PART III

ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

Information required in response to this item will be set forth in the Range Proxy Statement for the 2021 Annual Meeting of Stockholders to be held in May 2021 and is incorporated herein by reference.

See “Executive Officers of the Registrant” under Item 1 of this Form 10-K for the information about our executive officers.

Code of Ethics

Code of Ethics. We have adopted a Code of Ethics that applies to our principal executive officer, principal financial officer, principal accounting officer, or persons performing similar functions (as well as our directors and all other employees). A copy is available on our website, www.rangeresources.com and a copy in print will be provided to any person without charge, upon request. Such requests should be directed to the Corporate Secretary, 100 Throckmorton Street, Suite 1200, Fort Worth, Texas 76102 or by calling (817) 870-2601. We intend to disclose any amendments to or waivers of the Code of Ethics on behalf of our President and Chief Executive Officer, Chief Financial Officer, Controller and persons performing similar functions on our website, under the Corporate Governance caption, promptly following the date of such amendment or waiver.

ITEM  11. EXECUTIVE COMPENSATION

Information required by this item is incorporated herein by reference to the Range Proxy Statement for the 2021 Annual Meeting of Stockholders.

ITEM  12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS

Information required by this item is incorporated herein by reference to the Range Proxy Statement for the 2021 Annual Meeting of Stockholders.

ITEM  13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR INDEPENDENCE

Information required by this item is incorporated herein by reference to the Range Proxy Statement for the 2021 Annual Meeting of Stockholders.

ITEM  14. PRINCIPAL ACCOUNTANT FEES AND SERVICES

Information required by this item is incorporated herein by reference to the Range Proxy Statement for the 2021 Annual Meeting of Stockholders.

64

PART IV

ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

(a) 1. and 2. Financial Statements and Financial Statement Schedules.

The financial statements and financial statement schedules listed in the Index to Financial Statements in Item 8 are filed as part of this Form 10-K:

3. Exhibits

The exhibits listed in the accompanying Exhibits Index are filed as part of this Form 10-K.

Exhibit Number	Exhibit Description
2.1	Agreement and Plan of Merger by and among Range Resources Corporation, Medina Merger Sub, Inc. and Memorial Resource Development Corp., dated as of May 15, 2016 (incorporated by reference to Exhibit 2.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on May 19, 2016)
3.1	Restated Certificate of Incorporation of Range Resources Corporation (incorporated by reference to Exhibit 3.1.1 to our Form 10-Q (File No. 001-12209) as filed with the SEC on May 5, 2004) as amended by the Certificate of First Amendment to Restated Certificate of Incorporation of Range Resources Corporation (incorporated by reference to Exhibit 3.1 to our Form 10-Q (File No. 001-12209) as filed with the SEC on July 28, 2005 and the Certificate of Second Amendment to the Restated Certificate of Incorporation of Range Resources Corporation (incorporated by reference to Exhibit 3.1 to our Form 10-Q (File No. 001-12209) as filed with the SEC on July 24, 2008)
3.2	Amended and Restated By-laws of Range (incorporated by reference to Exhibit 3.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on May 19, 2016)
4.1*	Description of Registrant’s Securities
4.2	Form of 5.75% Senior Subordinated Notes due 2021 (incorporated by reference to Exhibit A to Exhibit 4.2 on Form 8-K (File No. 001-12209) as filed with the SEC on May 25, 2011)
4.3	Indenture dated May 25, 2011 by and among Range, as issuer, the Subsidiary Guarantors (as defined therein), as guarantors and The Bank of New York Mellon Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4.1 on our Form 8-K (File No. 001-12209) as filed with the SEC on May 25, 2011)
4.4	Form of 5.00% Senior Subordinated Notes due 2022 (incorporated by reference to Exhibit A to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on March 9, 2012)
4.5	Indenture dated March 9, 2012 by and among Range, as issuer, the Subsidiary Guarantors (as defined therein), as guarantors and The Bank of New York Mellon Trust Company, N.A., as trustee (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on March 9, 2012)
4.6	Form of 5.00% Senior Subordinated Notes due 2023 (incorporated by reference to Exhibit A to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on March 19, 2013)
4.7	Indenture dated March 18, 2013 among Range Resources Corporation, as issuer, the Subsidiary Guarantors (as defined therein) as guarantors and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on March 19, 2013)
4.8	Form of 4.875% Senior Notes due 2025 (incorporated by reference to Exhibit A to Exhibit 4.1 on Form 8-K (File No. 001-12009) as filed with the SEC on May 14, 2015)
4.9	Indenture dated May 14, 2015 among Range Resources Corporation, as issuer, the Initial Guarantors (as defined therein) and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on May 14, 2015)
4.10	Second Supplemental Indenture, by and among Range Resources Corporation, the guarantors named therein and The Bank of New York Mellon Trust Company, N.A., dated as of August 23, 2016 (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K (File No. 001-12209) as filed with the SEC on August 25, 2016)
4.11	Second Supplemental Indenture, by and among Range Resources Corporation, the guarantors named therein and The Bank of New York Mellon Trust Company, N.A., dated as of August 23, 2016 (incorporated by reference to Exhibit 4.2 to our Current Report on Form 8-K (File No. 001-12209) as filed with the SEC on August 25, 2016)

65

Exhibit Number	Exhibit Description
4.12	First Supplemental Indenture, by and among Range Resources Corporation, the guarantors named therein and U.S. Bank National Association, dated as of August 23, 2016 (incorporated by reference to Exhibit 4.3 to our Current Report on Form 8-K (File No. 001-12209) as filed with the SEC on August 25, 2016)
4.13	Form of 5.75% Senior Notes due 2021 (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2016)
4.14	Indenture dated September 16, 2016 among Range Resources Corporation, as issuer, the Subsidiary Guarantors (as defined therein) as guarantors and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2016)
4.15	Form of 5.00% Senior Notes due 2022 (incorporated by reference to Exhibit 4.2 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2016)
4.16	Indenture dated September 16, 2016 among Range Resources Corporation, as issuer the Subsidiary Guarantors (as defined therein) as guarantors and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.2 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2016)
4.17	Form of 5.00% Senior Notes due 2023 (incorporated by reference to Exhibit 4.3 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2016)
4.18	Indenture dated September 16, 2016 among Range Resources Corporation, as issuer, the Subsidiary Guarantors (as defined therein) as guarantors and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.3 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2016)
4.19	Form of 5.875% Senior Notes due 2022 (incorporated by reference to Exhibit 4.4 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2017)
4.20	Indenture dated September 16, 2016 among Range Resources Corporation, as issuer, the Subsidiary Guarantors (as defined therein) as guarantors and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.4 to our Form 8-K (File No. 001-12209) as filed with the SEC on September 19, 2016)
4.21	Form of 9.25% Senior Notes due 2026 (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on January 24, 2020)
4.22	Indenture dated January 24, 2020 among Range Resources Corporation, as issuer, the Subsidiary Guarantors (as defined therein) as guarantors and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on January 24, 2020)
4.23	Registration Rights Agreement, dated January 24, 2020, among Range Resources Corporation, the subsidiary guarantors named therein and the Initial Purchasers (as defined therein) (incorporated by reference to Exhibit 4.2 to our Form 8-K (File No. 001-12209) as filed with the SEC on January 24, 2020)
4.24	Form of 8.25% Senior Notes due 2029 (incorporated by reference to Exhibit A to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on January 8, 2021)
4.25	Indenture dated January 8, 2021 among Range Resources Corporation, as issuer, the Subsidiary Guarantors (as defined therein) as guarantors and U.S. Bank National Association, as trustee (incorporated by reference to Exhibit 4.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on January 8, 2021)
4.26	Registration Rights Agreement, dated January 8, 2021, among Range Resources Corporation, the subsidiary guarantors named therein and the Initial Purchasers (as defined therein) (incorporated by reference to Exhibit 4.2 to our Form 8-K (File No. 001-12209) as filed with the SEC on January 8, 2021)
10.01	Sixth Amended and Restated Credit Agreement, dated April 13, 2018 among Range Resources Corporation (as borrower), the institutions named therein as lenders and JPMorgan Chase Bank, N.A. as Administrative Agent (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on April 16, 2018)
10.02	First Amendment to the Sixth Amended and Restated Credit Agreement, dated as of October 18, 2019 among Range Resources Corporation (as borrowers) and JPMorgan Chase Bank, N.A. as Administrative Agent and the other lenders and agents party thereto (incorporated by reference to Exhibit 10.2 to our Form 10-Q (File No. 001-12209) as filed with the SEC on October 23, 2019)

66

Exhibit Number	Exhibit Description
10.03	Amended and Restated Range Resources Corporation 2004 Deferred Compensation Plan for Directors and Select Employees effective December 31, 2008 (incorporated by reference to Exhibit 10.2 to our Form 8-K (File No. 001-12209) as filed with the SEC on December 5, 2008)
10.04	Amendment No. 1 to the Amended and Restated Range Resources Corporation 2004 Deferred Compensation Plan for Directors and Select Employees (incorporated by reference to Exhibit 10.2 to our Form 10-Q (File No. 001-12209) as filed with the SEC on April 25, 2018)
10.05	Range Resources Corporation Amended and Restated 2005 Equity Based Compensation Plan (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on June 4, 2009)
10.06	First Amendment to the Range Resources Corporation Amended and Restated 2005 Equity Based Compensation Plan (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on May 20, 2010)
10.07	Second Amendment to the Range Resources Corporation Amended and Restated 2005 Equity Based Compensation Plan (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on May 19, 2011)
10.08	Range Resources Corporation 2019 Equity – Based Compensation Plan (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as field with the SEC on May 16, 2019
10.09	Range Resources Corporation 401(k) Plan (incorporated by reference to Exhibit 10.14 to our Form S-4 (File No. 333-108516) as filed with the SEC on September 4, 2003)
10.10	Amended and Restated Range Resources Corporation Executive Change in Control Severance Benefit Plan effective December 31, 2008 (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on December 5, 2008)
10.11	Supplement No. 1 to the Amended and Restated Executive Change in Control Severance Benefit Plan (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on February 12, 2020)
10.12	Form of Indemnification Agreement (incorporated by reference to Exhibit 10.6 to our Form 8-K (File No. 001-12209) as filed with the SEC on February 17, 2009)
10.13	Voting Support and Nomination Agreement, dated as of July 9, 2018, by and among Range Resources Corporation, SailingStone Capital Partners LLC, SailingStone Holdings LLC, (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K (File No. 001-12209) as filed with the SEC on July 10, 2018)
10.14	Purchase Agreement, dated January 9, 2020, by and among Range Resources Corporation, Range Louisiana Operating, LLC, Range Production Company, LLC, Range Resources—Appalachia, LLC, Range Resources—Louisiana, Inc. Range Resources—Midcontinent, LLC, Range Resources—Pine Mountain, Inc. and BofA Securities, Inc., as representative of the Initial Purchasers (incorporated by reference to Exhibit 10.1 on our Form 8-K (File No. 001-12209) as filed with the SEC on January 10, 2020)
10.15	Purchase Agreement, dated January 5, 2021, by and among Range Resources Corporation, Range Production Company, LLC, Range Resources-Appalachia, LLC, Range Resources-Louisiana, Inc, Range Resources – Midcontinent, LLC, Range Resources – Pine Mountain, Inc. and BofA Securities, Inc., as a representative of the Initial Purchasers (incorporated by reference to Exhibit 10.1 to our Form 8-K (File No. 001-12209) as filed with the SEC on January 5, 2021)
21.1*	Subsidiaries of Registrant
23.1*	Consent of Independent Registered Public Accounting Firm
23.2*	Consent of Netherland, Sewell & Associates, Inc., independent consulting engineers
31.1*	Certification by the Chairman and Chief Executive Officer of Range Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
31.2*	Certification by the Chief Financial Officer of Range Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002
32.1**	Certification by the Chairman and Chief Executive Officer of Range Pursuant to 18 U.S.C. Section 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002
32.2**	Certification by the Chief Financial Officer of Range Pursuant to 18 U.S.C. Section 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

67

Exhibit Number	Exhibit Description
99.1*	Report of Netherland, Sewell & Associates, Inc., independent consulting engineers
101.INS*	Inline XBRL Instance Document
101.SCH*	Inline XBRL Taxonomy Extension Schema
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document
104	Cover Page Interactive Data File (formatted as inline XBRL and contained in Exhibit 101)

* Filed herewith.

** Furnished herewith.

68

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

RANGE RESOURCES CORPORATION
By:	/s/ JEFFrey L. VENTURA
	Jeffrey L. Ventura
	Chief Executive Officer and President (principal executive officer)

Dated:  February 23, 2021

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacity and on the dates indicated.

Signature	Capacity	Date
/s/  Jeffrey L. Ventura	Chief Executive Officer and President	February 23, 2021
Jeffrey L. Ventura	(principal executive officer)
/s/  mark s. scucchi	Senior Vice President and Chief Financial Officer	February 23, 2021
Mark S. Scucchi	(principal financial officer)
/s/  DORI A. GINN	Senior Vice President, Controller and Principal Accounting Officer	February 23, 2021
Dori A. Ginn	(principal accounting officer)
/s/  Greg G. maxwell	Chairman of the Board	February 23, 2021
Greg G. Maxwell
/s/  BRENDA A. CLINE	Director	February 23, 2021
Brenda A. Cline
/s/  MARGARET K. DORMAN	Director	February 23, 2021
Margaret K. Dorman
/s/  James M. Funk	Director	February 23, 2021
James M. Funk
/s/  STEVEN D. GRAY	Director	February 23, 2021
Steven D. Gray
/s/  STEFFEN E. PALKO	Director	February 23, 2021
Steffen E. Palko

69

EX-4.1

EXHIBIT 4.1

DESCRIPTION OF THE REGISTRANT’S SECURITIES

REGISTERED PURSUANT TO SECTION 12 OF THE

SECURITIES EXCHANGE ACT OF 1934

As of the date of the Annual Report on Form 10-K of which this exhibit is a part, Range Resources Corporation (the “Company”) has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) which is our common stock.

Description of Common Stock

The following description of our common stock is a summary and does not purport to be complete. It is subject to and qualified in its entirety by reference to our Annual and Restated Certified of Incorporation, as amended (the “charter”) and our Amended and Restated Bylaws (the “bylaws”), each of which are incorporated by reference as an exhibit to the Annual Report on Form 10-K of which this exhibit is a part. We encourage you to read our charter, our bylaws and the applicable provisions of Delaware General Corporation Law for additional information.

Authorized Capital Stock

At December 31, 2020, our authorized and outstanding capital stock consisted of:

• 10,000,000 shares of preferred stock, par value $1.00 per share, of which, no shares are issued and outstanding; and

• 475,000,000 shares of common stock, par value $0.01 per share, of which 256,353,887 shares were outstanding.

Common Stock

• Dividends. Common stockholders may receive dividends when declared by the board of directors. Dividends may be paid in cash, stock or other form. In certain cases, common stockholders may not receive dividends until we have satisfied our obligations to any preferred stockholders. Certain of our debt instruments limit the payment of cash dividends.

• Voting Rights. Each share of our common stock is entitled to one vote in the election of directors and other matters. Common stockholders are not entitled to cumulative voting rights.

• Other Rights. Common stockholders are not entitled to preemptive rights. If we liquidate, dissolve or wind-up our business, either voluntarily or not, common stockholders will share equally in the assets remaining after we pay our creditors and preferred stockholders, if any.

• Listing. Our outstanding shares of common stock are listed on the NYSE under the symbol “RRC.” Any additional common stock we issue will also be listed on the NYSE.

Business Combination Under of Delaware Law

We are subject to the provisions of Section 203 of the Delaware General Corporation Law. In general, Section 203 prohibits a public Delaware corporation from engaging in a “business combination” with an “interested stockholder” for a period of three years after the date of the transaction in which the person became an interested stockholder, unless:

a) before that person became an interested stockholder, the corporation’s board of directors approved the transaction in which the interested stockholder or approved the business combination;

b) upon completion of the transaction that resulted in the interested stockholder’s becoming an interested stockholder, the interested stockholder owns at least 85% of the voting stock outstanding at the time the transaction commenced (excluding stock held by directors who are also officers of the corporation and by

employee stock plans that do not provide employees with the right to determine confidentially whether share held subject to the plan will be tendered in a tender or exchange offer); or

c) following the transaction in which that person became an interested stockholder, the business combination is approved by the corporation’s board of directors and authorized at a meeting of stockholders by the affirmative vote of the holders of at lease two-thirds of the outstanding voting stock that is not owned by the interested stockholder.

Under Section 203, these restrictions also do not apply to certain business combinations proposed by an interested stockholder following the announcement or notification of one of certain extraordinary transactions involving the corporation and a person who was not an interested stockholder during the previous three years or who became an interested stockholder with the approval of a majority of the corporation’s directors, if that extraordinary transaction is approved or not opposed by a majority of the directors before any person became an interested stockholder in the previous three years or who were recommended for election or elected to succeed such directors by a majority of such directors then in office. “Business combination” included mergers, assets sales and other transactions resulting in a financial benefit to the stockholder. “Interested stockholder” is a person who, together with affiliates and associates, owns (or, in some cases within three years prior, did own) 15% or more of the corporation’s voting stock.

Anti-Takeover Provisions of our Certificate of Incorporation and Bylaws

The provisions of our certificate of incorporation and bylaws we summarize below may have an anti-takeover effect and may delay, defer or prevent a tender offer or takeover attempt that a shareholder might consider in his or her best interest, including those attempts that might result in a premium over the market price for our common stock.

Any action by our stockholders must be taken at an annual or special meeting of stockholders. Special meetings of the stockholders may be called at any time by the Chairman of the Board, the President or the Board, and shall be called by the Chairman of the Board, the President, a Vice President or the Secretary on the written request stockholders owning at least a majority in amount of the entire capital stock of the Corporation issued and outstanding and entitled to vote.

Additionally, our certificate of incorporation and bylaws provide that stockholders seeking to present proposals before a meeting of stockholders or to nominate candidates for election as directors at a meeting of stockholders must provide timely notice in writing, and also specify requirements as to the form of the stockholder's notice.  Our bylaws further provide that a stockholder, or group of not more than 20 stockholders, who has owned continuously for at least three years shares of common stock representing an aggregate of at least 3% of the Company's outstanding shares of common stock, may nominate and include in the Company's proxy materials director nominees not to exceed the greater of (i) two and (ii) 20% of the Company's board of directors in office as of the proxy access notice date, provided that the stockholder(s) and nominee(s) otherwise satisfy the requirements in the bylaws.

Transfer Agent and Registrar

Computershare Investor Services, L.L.C. is the transfer agent and registrar for our common stock.

Quotation of Common Stock

Our common stock is traded on the NYSE under the symbol “RRC.”

EX-21.1

EXHIBIT 21.1

RANGE RESOURCES CORPORATION

Subsidiaries of Registrant

Name	Jurisdiction of Incorporation	Percentage of Voting Securities Owned by Immediate Parent
Range Resources—Appalachia, LLC	Delaware	100%
Range Resources—Pine Mountain, Inc.	Delaware	100%
Range Production Company, LLC	Delaware	100%
Range Resources—Midcontinent, LLC	Delaware	100%
Range Resources—Louisiana, Inc.	Delaware	100%

EX-23.1

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in the Registration Statements:

(1) Registration Statement (Form S-8 No. 333-251268) pertaining to the Amended and Restated Equity-Based Compensation Plan,

(2) Registration Statement (Form S-8 No. 333-231834) pertaining to the 2019 Equity-Based Compensation Plan,

(3) Registration Statement (Form S-8 Nos. 333-159951, 333167199 and 333-175098) pertaining to the Range Resources Corporation Amended and Restated 2005 Equity-Based Compensation Plan, and

(4) Registration Statement (Form S-8 Nos. 333-251267, 333-209830 and 333-233391) pertaining to the Amended and Restated Range Resources Corporation 2004 Deferred Compensation Plan for Directors and Select Employees;

of our reports dated February 23, 2021, with respect to the consolidated financial statements of Range Resources Corporation and the effectiveness of internal control over financial reporting of Range Resources Corporation included in this Annual Report (Form 10-K) for the year ended December 31, 2020.

/s/ Ernst & Young LLP

Fort Worth, Texas

February 23, 2021

EX-23.2

EXHIBIT 23.2

CONSENT OF INDEPENDENT PETROLEUM ENGINEERS AND GEOLOGISTS

We hereby consent to the incorporation, by reference, in the Registration Statements on Form S-8 (No. 333-251268) pertaining to the Amended and Restated 2019 Equity-Based Compensation Plan, on Form S-8 (No. 333-231834) pertaining to the 2019 Equity-Based Compensation Plan, on Form S-8 (Nos. 333-159951, 333-167199 and 333-175098) pertaining to the Range Resources Corporation Amended and Restated Range Resources Corporation 2005 Equity-Based Compensation Plan and on Form S-8 (Nos. 333-251267, 333-209830 and 333-233391) pertaining to the Range Resources Corporation 2004 Deferred Compensation Plan for Directors and Select Employees, of our report dated January 21, 2021, with respect to our estimates of proved reserves and future net revenue to the Range Resources Corporation interest, prepared for Range Resources Corporation and included in the Range Resources Corporation Annual Report (Form 10-K) for the year ended December 31, 2020.

		Netherland, Sewell & Associates, Inc. Texas Registered Engineering Firm. F-2699
Dallas, Texas	By:	/s/ C. H. (Scott) Rees III
February 23, 2021		C.H. (Scott) Rees III, P.E.
		Chairman and Chief Executive Officer

EX-31.1

EXHIBIT 31.1

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

I, Jeffrey L. Ventura, certify that:

1. I have reviewed this annual report on Form 10-K of Range Resources Corporation (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	February 23, 2021	/s/ JEFFREY L. VENTURA
		Jeffrey L. Ventura
		Chief Executive Officer and President

EX-31.2

EXHIBIT 31.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

I, Mark S. Scucchi, certify that:

1. I have reviewed this annual report on Form 10-K of Range Resources Corporation (the “registrant”);

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	February 23, 2021	/s/ MARK S. SCUCCHI
		Mark S. Scucchi
		Senior Vice President and Chief Financial Officer

EX-32.1

EXHIBIT 32.1

CERTIFICATION OF

PRESIDENT AND CHIEF EXECUTIVE OFFICER

OF RANGE RESOURCES CORPORATION

PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K for the period ending December 31, 2020 and filed with the Securities and Exchange Commission on the date hereof (the “Report”) and pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Jeffrey L. Ventura, Chief Executive Officer and President of Range Resources Corporation (the “Company”), hereby certify that, to my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

By:	/s/ JEFFREY L. VENTURA
	Jeffrey L. Ventura
	February 23, 2021

EX-32.2

EXHIBIT 32.2

CERTIFICATION OF

CHIEF FINANCIAL OFFICER

OF RANGE RESOURCES CORPORATION

PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED

PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K for the period ending December 31, 2020 and filed with the Securities and Exchange Commission on the date hereof (the “Report”) and pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Mark S. Scucchi, Chief Financial Officer of Range Resources Corporation (the “Company”), hereby certify that, to my knowledge:

1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

By:	/s/ MARK S. SCUCCHI
	Mark S. Scucchi
	February 23, 2021

EX-99.1

Exhibit 99.1

 

January 21, 2021

Mr. Alan Farquharson

Range Resources Corporation

100 Throckmorton Street, Suite 1200

Fort Worth, Texas 76102

Dear Mr. Farquharson:

In accordance with your request, we have audited the estimates prepared by Range Resources Corporation (Range), as of December 31, 2020, of the proved reserves and future revenue to the Range interest in certain oil and gas properties located in Pennsylvania.  It is our understanding that the proved reserves estimates shown herein constitute approximately 97 percent of all proved reserves owned by Range.  We have examined the estimates with respect to reserves quantities, reserves categorization, future producing rates, future net revenue, and the present value of such future net revenue, using the definitions set forth in U.S. Securities and Exchange Commission (SEC) Regulation S-X Rule 4-10(a).  The estimates of reserves and future revenue have been prepared in accordance with the definitions and regulations of the SEC and conform to the FASB Accounting Standards Codification Topic 932, Extractive Activities—Oil and Gas, except that per-well overhead expenses and future income taxes are excluded.  We completed our audit on or about the date of this letter.  This report has been prepared for Range's use in filing with the SEC; in our opinion the assumptions, data, methods, and procedures used in the preparation of this report are appropriate for such purpose.

The following table sets forth Range's estimates of the net reserves and future net revenue, as of December 31, 2020, for the audited properties:

	Net Reserves			Future Net Revenue (M$)
	Oil	NGL	Gas		Present Worth
Category	(MBBL)	(MBBL)	(MMCF)	Total	at 10%
Proved Developed Producing	19,735.004	523,060.672	5,687,146.496	6,188,884.992	2,549,615.104
Proved Developed Non-Producing	3,201.297	27,688.656	216,861.472	282,431.584	115,722.976
Proved Undeveloped	34,649.980	400,695.296	4,798,502.400	3,280,338.432	282,019.776
Total Proved	57,586.280	951,444.672	10,702,509.056	9,751,656.448	2,947,359.488

Totals may not add because of rounding.

The oil volumes shown include crude oil and condensate.  Oil and natural gas liquids (NGL) volumes are expressed in thousands of barrels (MBBL); a barrel is equivalent to 42 United States gallons.  Gas volumes are expressed in millions of cubic feet (MMCF) at standard temperature and pressure bases.

When compared on an area-by-area basis, some of the estimates of Range are greater and some are less than the estimates of Netherland, Sewell & Associates, Inc. (NSAI).  However, in our opinion the estimates shown herein of Range's reserves and future revenue are reasonable when aggregated at the proved level and have been prepared in accordance with the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers (SPE Standards).  Additionally, the estimates shown herein of Range's proved reserves and present worth are within 5 percent of the estimates of NSAI, which is within the recommended 10 percent tolerance threshold set forth in the SPE Standards.  We are satisfied with the methods and procedures used by Range in preparing the December 31, 2020, estimates of reserves and future revenue, and we saw nothing of an unusual nature that would cause us to take exception with the estimates, in the aggregate, as prepared by Range.

Reserves categorization conveys the relative degree of certainty; reserves subcategorization is based on development and production status.  The estimates of reserves and future revenue included herein have not been adjusted for risk.  Range's estimates do not include probable or possible reserves that may exist for these properties, nor do they include any value for undeveloped acreage beyond those tracts for which undeveloped reserves have been estimated.  

Prices used by Range are based on the 12-month unweighted arithmetic average of the first-day-of-the-month price for each month in the period January through December 2020.  For oil volumes and a portion of NGL volumes, the average NYMEX West Texas Intermediate price of $39.77 per barrel is adjusted for quality, transportation fees, and market differentials.  For gas volumes and the remaining portion of NGL volumes, the average NYMEX Henry Hub price of $1.98 per MMBTU is adjusted for energy content, transportation fees, and market differentials.  For ethane volumes and NGL volumes associated with ethane, historical realized prices used in the calculation of adjustments are based on formulas specified by contractual agreements.  All prices are held constant throughout the lives of the properties.  The average adjusted product prices weighted by production over the remaining lives of the properties are $30.13 per barrel of oil, $16.14 per barrel of NGL, and $1.688 per MCF of gas.

Operating costs used by Range are based on historical operating expense records.  Operating costs have been divided into per-well costs and per-unit-of-production costs.  Headquarters general and administrative overhead expenses of Range are not included.  Capital costs used by Range are based on authorizations for expenditure and actual costs from recent activity.  Capital costs are included as required for workovers, new development wells, and production equipment.  Abandonment costs used are Range's estimates of the costs to abandon the wells and production facilities, net of any salvage value.  Operating, capital, and abandonment costs are not escalated for inflation.

The reserves shown in this report are estimates only and should not be construed as exact quantities.  Proved reserves are those quantities of oil and gas which, by analysis of engineering and geoscience data, can be estimated with reasonable certainty to be economically producible; probable and possible reserves are those additional reserves which are sequentially less certain to be recovered than proved reserves.  Estimates of reserves may increase or decrease as a result of market conditions, future operations, changes in regulations, or actual reservoir performance.  In addition to the primary economic assumptions discussed herein, estimates of Range and NSAI are based on certain assumptions including, but not limited to, that the properties will be developed consistent with current development plans as provided to us by Range, that the properties will be operated in a prudent manner, that no governmental regulations or controls will be put in place that would impact the ability of the interest owner to recover the reserves, and that projections of future production will prove consistent with actual performance.  If the reserves are recovered, the revenues therefrom and the costs related thereto could be more or less than the estimated amounts.  Because of governmental policies and uncertainties of supply and demand, the sales rates, prices received for the reserves, and costs incurred in recovering such reserves may vary from assumptions made while preparing these estimates.  

It should be understood that our audit does not constitute a complete reserves study of the audited oil and gas properties.  Our audit consisted primarily of substantive testing, wherein we conducted a detailed review of all properties.  In the conduct of our audit, we have not independently verified the accuracy and completeness of information and data furnished by Range with respect to ownership interests, oil and gas production, well test data, historical costs of operation and development, product prices, or any agreements relating to current and future operations of the properties and sales of production.  However, if in the course of our examination something came to our attention that brought into question the validity or sufficiency of any such information or data, we did not rely on such information or data until we had satisfactorily resolved our questions relating thereto or had independently verified such information or data.  Our audit did not include a review of Range's overall reserves management processes and practices.

We used standard engineering and geoscience methods, or a combination of methods, including performance analysis and analogy, that we considered to be appropriate and necessary to establish the conclusions set forth herein.  As in all aspects of oil and gas evaluation, there are uncertainties inherent in the interpretation of engineering and geoscience data; therefore, our conclusions necessarily represent only informed professional judgment.

Supporting data documenting this audit, along with data provided by Range, are on file in our office.  The technical persons primarily responsible for conducting this audit meet the requirements regarding qualifications, independence, objectivity, and confidentiality set forth in the SPE Standards.  Philip S. (Scott) Frost, a Licensed Professional Engineer in the State of Texas, has been practicing consulting petroleum engineering at NSAI since 1984 and has over 4 years of prior industry experience.  William J. Knights, a Licensed Professional Geoscientist in the State of Texas, has been practicing consulting petroleum geoscience at NSAI since 1991 and has over 10 years of prior industry experience.  We are independent petroleum engineers, geologists, geophysicists, and petrophysicists; we do not own an interest in these properties nor are we employed on a contingent basis.

Sincerely,

NETHERLAND, SEWELL & ASSOCIATES, INC.

Texas Registered Engineering Firm F-2699

/s/ C.H. (Scott) Rees III

By:

C.H. (Scott) Rees III, P.E.

Chairman and Chief Executive Officer

/s/ Philip S. (Scott) Frost/s/ William J. Knights	/s/ William J. Knights
By:	By:
Philip S. (Scott) Frost, P.E. 88738	William J. Knights, P.G. 1532
Senior Vice PresidentVice President	Vice President
Date Signed:  January 21, 2021Date Signed:  January 21, 2021	Date Signed:  January 21, 2021

PSF:JLC

Please be advised that the digital document you are viewing is provided by Netherland, Sewell & Associates, Inc. (NSAI) as a convenience to our clients.  The digital document is intended to be substantively the same as the original signed document maintained by NSAI.  The digital document is subject to the parameters, limitations, and conditions stated in the original document.  In the event of any differences between the digital document and the original document, the original document shall control and supersede the digital document.

 

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Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2020	Feb. 19, 2021	Jun. 30, 2020
Cover [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Registrant Name	RANGE RESOURCES CORPORATION
Entity Central Index Key	0000315852
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		258,570,848
Entity Public Float			$ 1,404,596,000
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-12209
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	34-1312571
Entity Address, Address Line One	100 Throckmorton Street
Entity Address, Address Line Two	Suite 1200
Entity Address, City or Town	Fort Worth
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	76102
City Area Code	817
Local Phone Number	870-2601
Document Annual Report	true
Document Transition Report	false
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Interactive Data Current	Yes
Documents Incorporated by Reference	Portions of the registrant’s definitive proxy statement to be furnished to stockholders in connection with its 2021 Annual Meeting of Stockholders, which will be filed with the Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates, are incorporated by reference in Part II, Item 5 and Part III, Items 10-14 of this report.
Title of 12(b) Security	Common Stock, $.01 par value
Trading Symbol	RRC
Security Exchange Name	NYSE
ICFR Auditor Attestation Flag	true

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 458	$ 546
Accounts receivable, less allowance for doubtful accounts of $3,004 and $8,784		252,642	272,900
Derivative assets		23,332	136,848
Prepaid and other current assets		13,408	17,508
Total current assets		289,840	427,802
Derivative assets		16,680	706
Natural gas and oil properties, successful efforts method	[1]	9,751,114	10,213,737
Accumulated depletion and depreciation		(4,064,305)	(4,172,702)	[1]
Natural gas and oil properties, successful efforts method, net	[1]	5,686,809	6,041,035
Other property and equipment		79,878	102,083
Accumulated depreciation and amortization		(75,717)	(96,708)
Other Property and equipment, net		4,161	5,375
Operating lease right-of-use assets		63,581	62,053
Other assets		75,865	75,432
Total assets		6,136,936	6,612,403
Current liabilities:
Accounts payable		132,421	155,341
Asset retirement obligations		6,689	2,393
Accrued liabilities		348,333	356,392
Accrued interest		54,742	39,299
Derivative liabilities		26,707	13,119
Divestiture contract obligation		92,593
Current maturities of long-term debt		45,356
Total current liabilities		706,841	566,544
Bank debt		693,123	464,319
Senior notes		2,329,745	2,659,844
Senior subordinated notes		17,384	48,774
Deferred tax liabilities		135,267	160,196
Derivative liabilities		9,746	949
Deferred compensation liabilities		81,481	64,070
Operating lease liabilities		43,155	41,068
Asset retirement obligations and other liabilities		91,157	259,151
Divestiture contract obligation		391,502
Total liabilities		4,499,401	4,264,915
Commitments and contingencies
Stockholders' Equity
Preferred stock, $1 par 10,000,000 shares authorized, none issued and outstanding		0	0
Common stock, $0.01 par 475,000,000 shares authorized, 251,438,936 issued at December 31, 2019 and 249,519,687 issued at December 31, 2018		2,563	2,514
Common stock held in treasury, at cost, 1,808,133 shares at December 31, 2019 and 9,665 shares at December 31, 2018		(30,132)	(7,236)
Additional paid-in capital		5,684,268	5,659,832
Accumulated other comprehensive loss		(479)	(788)
Retained deficit		(4,018,685)	(3,306,834)
Total stockholders' equity		1,637,535	2,347,488
Total liabilities and stockholders' equity		$ 6,136,936	$ 6,612,403

[1] Includes capitalized asset retirement costs and the associated accumulated amortization.

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts on accounts receivable	$ 3,004	$ 8,784
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	475,000,000	475,000,000
Common stock, shares issued	256,353,887	251,438,936
Common stock held in treasury, shares	10,005,795	1,808,133

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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenues and other income:
Revenues and other income	$ 1,780,986	$ 2,600,934	$ 3,333,837
Derivative fair value income (loss)	187,711	226,681	(51,192)
Total revenues and other income	1,968,697	2,827,615	3,282,645
Costs and expenses:
Production and ad valorem taxes	24,617	37,967	46,149
Brokered natural gas and marketing	188,316	359,892	496,047
Exploration	32,654	36,683	34,117
Abandonment and impairment of unproved properties	19,334	1,235,342	514,994
General and administrative	159,415	181,109	209,812
Exit and termination costs	547,409	9,506	(373)
Deferred compensation plan	12,541	(15,472)	(18,631)
Interest	192,667	194,285	210,209
Gain on early extinguishment of debt	(14,068)	(5,415)	0
Depletion, depreciation and amortization	394,330	548,843	635,467
Impairment of proved properties and other assets	78,955	1,095,634	22,614
Impairment of goodwill	0	0	1,641,197
(Gain) loss on the sale of assets	(110,791)	30,256	10,666
Total costs and expenses	2,706,026	5,044,203	5,059,615
Loss before income taxes	(737,329)	(2,216,588)	(1,776,970)
Income tax (benefit) expense:
Current	(523)	6,147	0
Deferred	(25,029)	(506,438)	(30,489)
Total (benefit) expense for income taxes	(25,552)	(500,291)	(30,489)
Net loss	$ (711,777)	$ (1,716,297)	$ (1,746,481)
Net loss per common share:
Basic	$ (2.95)	$ (6.92)	$ (7.10)
Diluted	$ (2.95)	$ (6.92)	$ (7.10)
Weighted average common shares outstanding:
Basic	241,373	247,970	246,171
Diluted	241,373	247,970	246,171
Natural Gas, NGLs and Oil Sales
Revenues and other income:
Revenues and other income	$ 1,607,713	$ 2,255,425	$ 2,851,077
Brokered Natural Gas, Marketing and Other
Revenues and other income:
Revenues and other income	173,273	345,509	482,760
Direct Operating
Costs and expenses:
Costs and expenses	92,157	136,276	139,531
Transportation, Gathering, Processing and Compression
Costs and expenses:
Costs and expenses	$ 1,088,490	$ 1,199,297	$ 1,117,816

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (711,777)	$ (1,716,297)	$ (1,746,481)
Postretirement benefits:
Actuarial gain (loss)	39	(532)	526
Amortization of prior service costs	369	369	369
Income tax (expense) benefit	(99)	33	(221)
Total comprehensive loss	$ (711,468)	$ (1,716,427)	$ (1,745,807)

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Operating activities:
Net loss	$ (711,777,000)	$ (1,716,297,000)	$ (1,746,481,000)
Adjustments to reconcile net loss to net cash provided from operating activities
Deferred income tax benefit	(25,029,000)	(506,438,000)	(30,489,000)
Depletion, depreciation and amortization and impairment of proved properties	473,285,000	1,644,477,000	658,081,000
Impairment of goodwill	0	0	1,641,197,000
Exploration dry hole costs	888,000	(11,000)	4,000
Abandonment and impairment of unproved properties	19,334,000	1,235,342,000	514,994,000
Derivative fair value (income) loss	(187,711,000)	(226,681,000)	51,192,000
Cash settlements on derivative financial instruments	322,629,000	188,384,000	(131,522,000)
Divestiture contract obligation	499,934,000	0	0
Allowance for bad debt	400,000	4,341,000	(1,000,000)
Amortization of deferred financing costs and other	6,919,000	6,455,000	2,515,000
Deferred and stock-based compensation	48,552,000	24,891,000	29,757,000
(Gain) loss on the sale of assets	(110,791,000)	30,256,000	10,666,000
Gain on early extinguishment of debt	(14,068,000)	(5,415,000)	0
Changes in working capital:
Accounts receivable	24,539,000	214,196,000	(142,381,000)
Inventory and other	1,010,000	4,520,000	138,000
Accounts payable	(32,686,000)	(60,374,000)	(4,274,000)
Accrued liabilities and other	(46,748,000)	(155,803,000)	138,293,000
Net cash provided from operating activities	268,680,000	681,843,000	990,690,000
Investing activities:
Additions to natural gas and oil properties	(405,617,000)	(687,277,000)	(960,916,000)
Additions to field service assets	(2,873,000)	(1,162,000)	(1,477,000)
Acreage purchases	(26,816,000)	(59,986,000)	(60,603,000)
Proceeds from disposal of assets	246,127,000	784,937,000	324,549,000
Purchases of marketable securities held by the deferred compensation plan	(17,076,000)	(19,039,000)	(46,177,000)
Proceeds from the sales of marketable securities held by the deferred compensation plan	22,173,000	22,005,000	49,190,000
Net cash (used in) provided from investing activities	(184,082,000)	39,478,000	(695,434,000)
Financing activities:
Borrowings on credit facilities	2,076,000,000	2,311,000,000	2,070,000,000
Repayments on credit facilities	(1,851,000,000)	(2,777,000,000)	(2,338,000,000)
Issuance of senior notes	850,000,000	0	0
Repayment of senior or senior subordinated notes	(1,120,634,000)	(195,432,000)	0
Dividends paid	0	(20,070,000)	(19,940,000)
Treasury stock purchases	(22,992,000)	(6,908,000)	0
Debt issuance costs	(13,608,000)	(4,446,000)	(8,220,000)
Taxes paid for shares withheld	(3,324,000)	(3,384,000)	(3,183,000)
Change in cash overdrafts	176,000	(25,747,000)	(5,563,000)
Proceeds from the sales of common stock held by the deferred compensation plan	696,000	667,000	9,747,000
Net cash used in financing activities	(84,686,000)	(721,320,000)	(295,159,000)
(Decrease) increase in cash and cash equivalents	(88,000)	1,000	97,000
Cash and cash equivalents at beginning of year	546,000	545,000	448,000
Cash and cash equivalents at end of year	$ 458,000	$ 546,000	$ 545,000

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Common stock held in treasury	Additional Paid-in Capital	Retained (deficit)/earnings	Accumulated other comprehensive loss
Beginning balance at Dec. 31, 2017	$ 5,774,272	$ 2,481	$ (599)	$ 5,577,732	$ 195,990	$ (1,332)
Beginning balance Shares at Dec. 31, 2017		248,144,000
Issuance of common stock	13,696	$ 14		13,682
Issuance of common stock, shares		1,374,000
Issuance of common stock upon vesting of PSUs				31	(31)
Issuance of common stock upon vesting of PSUs, shares		2,000
Stock-based compensation expense	37,210			37,210
Cash dividends paid ($0.08 per share)	(19,940)				(19,940)
Treasury stock issuance			208	(208)
Other comprehensive income (loss)	674					674
Net income (loss)	(1,746,481)				(1,746,481)
Ending balance at Dec. 31, 2018	4,059,431	$ 2,495	(391)	5,628,447	(1,570,462)	(658)
Ending balance Shares at Dec. 31, 2018		249,520,000
Issuance of common stock	342	$ 19		323
Issuance of common stock, shares		1,919,000
Issuance of common stock upon vesting of PSUs				5	(5)
Stock-based compensation expense	31,120			31,120
Cash dividends paid ($0.08 per share)	(20,070)				(20,070)
Treasury stock issuance			63	(63)
Treasury stock repurchased	(6,908)		(6,908)
Other comprehensive income (loss)	(130)					(130)
Net income (loss)	(1,716,297)				(1,716,297)
Ending balance at Dec. 31, 2019	$ 2,347,488	$ 2,514	(7,236)	5,659,832	(3,306,834)	(788)
Ending balance Shares at Dec. 31, 2019	251,438,936	251,439,000
Net income (loss)	$ 166,195
Ending balance at Mar. 31, 2020	2,495,808
Beginning balance at Dec. 31, 2019	$ 2,347,488	$ 2,514	(7,236)	5,659,832	(3,306,834)	(788)
Beginning balance Shares at Dec. 31, 2019	251,438,936	251,439,000
Net income (loss)	$ (1,388)
Ending balance at Jun. 30, 2020	2,336,022
Beginning balance at Dec. 31, 2019	$ 2,347,488	$ 2,514	(7,236)	5,659,832	(3,306,834)	(788)
Beginning balance Shares at Dec. 31, 2019	251,438,936	251,439,000
Net income (loss)	$ (750,178)
Ending balance at Sep. 30, 2020	1,593,968
Beginning balance at Dec. 31, 2019	$ 2,347,488	$ 2,514	(7,236)	5,659,832	(3,306,834)	(788)
Beginning balance Shares at Dec. 31, 2019	251,438,936	251,439,000
Issuance of common stock	$ (893)	$ 49		(942)
Issuance of common stock, shares		4,896,000
Issuance of common stock upon vesting of PSUs				74	(74)
Issuance of common stock upon vesting of PSUs, shares		19,000
Stock-based compensation expense	25,400			25,400
Treasury stock issuance			96	(96)
Treasury stock repurchased	(22,992)		(22,992)
Other comprehensive income (loss)	309					309
Net income (loss)	(711,777)				(711,777)
Ending balance at Dec. 31, 2020	$ 1,637,535	$ 2,563	$ (30,132)	$ 5,684,268	$ (4,018,685)	$ (479)
Ending balance Shares at Dec. 31, 2020	256,353,887	256,354,000
Beginning balance at Mar. 31, 2020	$ 2,495,808
Net income (loss)	(167,583)
Ending balance at Jun. 30, 2020	2,336,022
Net income (loss)	(748,790)
Ending balance at Sep. 30, 2020	$ 1,593,968

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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Of Stockholders Equity [Abstract]
Cash dividends paid per share	$ 0.08	$ 0.08

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Summary of Organization and Nature of Business

12 Months Ended

Dec. 31, 2020

Industry Specific Policies [Abstract]

Summary of Organization and Nature of Business

(1) Summary of Organization and Nature of Business

Range Resources Corporation (“Range,” “we,” “us,” or “our”) is a Fort Worth, Texas-based independent natural gas, natural gas liquids (“NGLs”), crude oil and condensate company primarily engaged in the exploration, development and acquisition of natural gas and oil properties in the Appalachian region of the United States. Our objective is to build stockholder value through returns focused development of natural gas and oil properties. Range is a Delaware corporation with our common stock listed and traded on the New York Stock Exchange under the symbol “RRC”.

XML

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

(2) Summary of Significant Accounting Policies

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements, including the notes, have been prepared in accordance with U.S. GAAP and include the accounts of all of our subsidiaries. All material intercompany balances and transactions have been eliminated. Certain reclassifications have been made to prior period amounts to conform to the current period’s presentation.

Correction of Error in Previously Reported 2020 Interim Financial Statements

In connection with our year-end financial close process and related preparation of our 2020 Annual Report on Form 10-K, a misstatement of deferred income taxes was identified in our previously filed 2020 unaudited interim financial statements. This matter is the result of an error in management’s conclusion regarding the realizability of deferred tax assets resulting from changes to the tax law under the Coronavirus Aid, Relief and Economic Security Act (also known as the CARES Act) and has resulted in a change to deferred tax expense (benefit). For further information, see Note 18.

Use of Estimates

The preparation of financial statements in accordance with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from these estimates and changes in these estimates are recorded when known.

Estimated quantities of natural gas, NGLs, crude oil and condensate reserves is a significant estimate that requires judgment. All of the reserve data included in this Form 10-K are estimates. Reservoir engineering is a subjective process of estimating underground accumulations of natural gas, NGLs, crude oil and condensate. There are numerous uncertainties inherent in estimating quantities of proved natural gas, NGLs, crude oil and condensate reserves. The accuracy of any reserves estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. As a result, reserves estimates may be different from the quantities of natural gas, NGLs and crude oil and condensate that are ultimately recovered. See Note 19 for further detail.

Other items subject to estimates and assumptions include the carrying amounts of property, plant and equipment, asset retirement obligations, valuation of derivative instruments, exit cost liabilities and valuation allowances for deferred income tax assets, among others. Although we believe these estimates are reasonable, actual results could differ from these estimates.

Business Segment Information

We have evaluated how we are organized and managed and have identified only one operating segment, which is the exploration and production of natural gas, NGLs, crude oil and condensate in the United States. We consider our gathering, processing and marketing functions as integral to our natural gas, crude oil and condensate producing activities.

We have a single company-wide management team that administers all properties as a whole rather than by discrete operating segments. We track only basic operational data by area. We do not maintain complete separate financial statement information by area. We measure financial performance as a single enterprise and not on a geographical or area-by-area basis. All of our operating revenues, income from operations and assets are generated in the United States.

Revenue Recognition, Accounts Receivable and Gas Imbalances

Natural gas, NGLs and oil sales revenues are recognized when control of the product is transferred to the customer and collectability is reasonably assured. See below for a more detailed summary of our product types.

Natural Gas and NGLs Sales

Under our gas processing contracts, we deliver natural gas to a midstream processing entity at the wellhead or the inlet of the

midstream processing entity’s system. The midstream processing entity processes the natural gas and remits proceeds to us for the resulting sales of NGLs and residue gas. In these scenarios, we evaluate whether we are the principal or the agent in the transaction. For those contracts that we have concluded that we are the principal, the ultimate third party is our customer and we recognize revenue on a gross basis, with gathering, compression, processing and transportation fees presented as an expense. Alternatively, for those contracts that we have concluded that we are the agent, the midstream processing entity is our customer and we recognize revenue based on the net amount of the proceeds received from the midstream processing entity.

In certain natural gas processing agreements, we may elect to take our residue gas and/or NGLs in kind at the tailgate of the midstream entity’s processing plant and subsequently market the product on our own. Through the marketing process, we deliver product to the ultimate third-party purchaser at a contractually agreed-upon delivery point and receive a specified index price from the purchaser. In this scenario, we recognize revenue when control transfers to the purchaser at the delivery point based on the index price received from the purchaser. The gathering, processing and compression fees attributable to the gas processing contract, as well as any transportation fees incurred to deliver the product to the purchaser are presented as transportation, gathering, processing and compression expense.

Oil Sales

Our oil sales contracts are generally structured in one of the following ways:

• We sell oil production at the wellhead and collect an agreed-upon index price, net of transportation incurred by the purchaser (that is, a netback arrangement). In this scenario, we recognize revenue when control transfers to the purchaser at the wellhead at the net price received.

• We deliver oil to the purchaser at a contractually agreed-upon delivery point at which the purchaser takes custody, title, and risk of loss of the product. Under this arrangement, we pay a third party to transport the product and receive a specified index price from the purchaser with no deduction. In this scenario, we recognize revenue when control transfers to the purchaser at the delivery point based on the price received from the purchaser. The third-party costs are recorded as transportation, gathering, processing and compression expense.

Brokered Natural Gas, Marketing and Other

We realize brokered margins as a result of buying natural gas or NGLs utilizing separate purchase transactions, generally with separate counterparties, and subsequently selling that natural gas or NGLs under our existing contracts to fill our contract commitments or use existing infrastructure contracts to economically fulfill available capacity. In these arrangements, we take control of the natural gas purchased prior to delivery of that gas under our existing gas contracts with a separate counterparty. Revenues and expenses related to brokering natural gas are reported gross as part of revenues and expenses in accordance with applicable accounting standards. Proceeds generated from the sale of excess firm transportation to third parties is also included here when we are determined to no longer be the primary obligor of such arrangement. Our net brokered margin was a loss of $14.2 million in 2020 compared to a loss of $14.2 million in 2019 and a loss of $16.3 million in 2018.

The recognition of gains or losses on derivative instruments is not considered revenue from contracts with customers. We may use financial or physical contracts accounted for as derivatives as economic hedges to manage price risk associated with normal sales or in limited cases may use them for contracts we intend to physically settle but that do not meet all of the criteria to be treated as normal sales.

Accounts Receivable

Our accounts receivable consist mainly of receivables from oil and gas purchasers and joint interest owners on properties we operate. Although receivables are concentrated in the oil and gas industry, we do not view this as an unusual credit risk. However, this concentration has the potential to impact our overall exposure to credit risk in that our customers may be similarly affected by changes in economic and financial conditions, commodity prices or other conditions. Each reporting period, we assess the recoverability of material receivables using historical data, current market conditions and reasonable and supported forecasts of future economic conditions to determine their expected collectability. The loss given default method is used when, based on management’s judgement, an allowance for expected credit losses is accrued on material receivables to reflect the net amount to be collected. In certain instances, we require purchasers to post stand-by letters of credit. For receivables from joint interest owners, we may have the ability to withhold future revenue disbursements to recover any non-payment of joint interest billings. We regularly review collectability and establish or adjust our allowance as necessary. We have allowances for doubtful accounts relating to exploration and production receivables of $3.0 million at December 31, 2020 compared to $8.8 million at December 31, 2019. For our North Louisiana assets, there were associated joint interest accounts receivable balances that had previously been determined to be uncollectible. As a result of the sale of those assets, such receivables were written off. We recorded bad debt expense of $400,000 in the year ended December 31, 2020 compared to $4.3 million in the year ended December 31, 2019 and income of $1.0 million in the year ended December 31, 2018.

Cash and Cash Equivalents

Cash and cash equivalents include cash on hand and on deposit and investments in highly liquid debt instruments with maturities of three months or less. Outstanding checks in excess of funds on deposit are included in accounts payable on the consolidated balance sheets and the change in such overdrafts is classified as a financing activity on the consolidated statements of cash flows.

Marketable Securities

Investments in unaffiliated equity securities held in our deferred compensation plans qualify as trading securities and are recorded at fair value. Investments held in the deferred compensation plans consist of various publicly-traded mutual funds. These funds include equity securities and money market instruments and are reported in other assets in the accompanying consolidated balance sheets.

Natural Gas and Oil Properties

Property Acquisition Costs. We use the successful efforts method of accounting for natural gas and oil producing activities. Costs to drill exploratory wells that do not find proved reserves, geological and geophysical costs, delay rentals and costs of carrying and retaining unproved properties are expensed. Costs incurred for exploratory wells that find reserves that cannot yet be classified as proved are capitalized if (a) the well has found a sufficient quantity of reserves to justify its completion as a producing well and (b) we are making sufficient progress assessing the reserves and the economic and operating viability of the project.

Depreciation, Depletion and Amortization. Depreciation, depletion and amortization of proved properties, including other property and equipment such as gathering lines related to natural gas and oil producing activities, is provided on the units of production method. Historically, we have adjusted our depletion rates in the fourth quarter of each year based on the year-end reserve report and at other times during the year when circumstances indicate there has been a significant change in reserves or costs.

Impairments. Our proved natural gas and oil properties are reviewed for impairment annually and periodically as events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. These assets are reviewed for potential impairment at the lowest level for which there are identifiable cash flows that are largely independent of other groups of assets which is the level at which depletion is calculated. The review is done by determining if the historical cost of proved properties less the applicable accumulated depreciation, depletion and amortization is less than the estimated expected undiscounted future net cash flows. The expected future net cash flows are estimated based on our plans to produce and develop reserves. Expected future net cash inflow from the sale of produced reserves is calculated based on estimated future prices and estimated operating and development costs. We estimate prices based upon market-related information including published futures prices. The estimated future level of production, which is based on proved and risk adjusted probable and possible reserves, as appropriate, has assumptions surrounding the future levels of prices and costs, field decline rates, market demand and supply and the economic and regulatory climate. In certain circumstances, we also consider potential sales of properties to third parties in our estimates of cash flows. When the carrying value exceeds the sum of undiscounted future net cash flows, an impairment loss is recognized for the difference between the estimated fair market value as determined by discounted future net cash flows using a discount rate similar to that used by market participants, or comparable market value if available and the carrying value of the asset. A significant amount of judgment is involved in performing these evaluations since the results are based on estimated future events. Such events include a projection of future natural gas and oil prices, an estimate of the ultimate amount of recoverable natural gas and oil reserves that will be produced from an asset group, the timing of future production, future production costs, future abandonment costs and future inflation. We cannot predict whether impairment charges may be required in the future. If natural gas, NGLs and oil prices decrease or drilling efforts are unsuccessful, we may be required to record additional impairments. For additional information regarding proved property impairments, see Note 11.

We evaluate our unproved property investment periodically for impairment. The majority of these costs generally relate to the acquisition of leasehold costs. The costs are capitalized and evaluated (at least quarterly) as to recoverability based on changes brought about by economic factors and potential shifts in business strategy employed by management which could impact the number of drilling locations we intend to drill. Impairment of a significant portion of our unproved properties is assessed and amortized on an aggregate basis based on our average holding period, expected forfeiture rate and anticipated drilling success. Information such as reservoir performance or future plans to develop acreage is also considered. Impairment of individually significant unproved property is assessed on a property-by-property basis considering a combination of time, geologic and engineering factors. In certain circumstances, our future plans to develop acreage may accelerate our impairment. Unproved properties had a net book value of $859.8 million as of December 31, 2020 compared to $868.2 million in 2019. We have recorded abandonment and impairment expense related to unproved properties of $19.3 million in the year ended December 31, 2020 compared to $1.2 billion in 2019 and $515.0 million in 2018. In 2019, an impairment of $1.2 billion was recorded associated with our North Louisiana unproved property values allocated to previously acquired probable and possible reserves that we no longer had to intent to drill based on a shift in capital allocation which materially impacted our drilling inventory.  

Dispositions. Proceeds from the disposal of natural gas and oil producing properties that are part of an amortization base are credited to the net book value of the amortization group with no immediate effect on income. However, gain or loss is recognized if the disposition is significant enough to materially impact the depletion rate of the remaining properties in the amortization base. Dispositions are accounted for as a sale of assets. For additional information regarding our dispositions, see Note 4.

Other Property and Equipment

Other property and equipment includes assets such as buildings, furniture and fixtures, field equipment, leasehold improvements and data processing and communication equipment. These items are generally depreciated by individual components on a straight-line basis over their economic useful life, which is generally from three to ten years. Leasehold improvements are amortized over the lesser of their economic useful lives or the underlying terms of the associated leases. Depreciation expense was $2.6 million in the year ended December 31, 2020 compared to $5.0 million in the year ended December 31, 2019 and $6.0 million in the year ended December 31, 2018.

Leases

We determine if an arrangement is a lease at inception of the arrangement. To the extent that we determine an arrangement represents a lease, we classify that lease as an operating lease or a finance lease. We currently do not have any material finance leases. We capitalize our operating leases on our consolidated balance sheets through a right-of-use (“ROU”) asset and a corresponding lease liability. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Short-term leases that have an initial term of one year or less are not capitalized but are disclosed. Short-term lease costs exclude expenses related to leases with a lease term of one month or less.

Our operating leases are reflected as operating lease ROU assets, accrued liabilities-current and operating lease liabilities on our consolidated balance sheets. Operating lease ROU assets and liabilities are recognized at the commencement date of an arrangement based on the present value of lease payments over the lease term. In addition to the present value of lease payments, the operating lease ROU asset also includes any lease payments made to the lessor prior to lease commencement less any lease incentives and initial direct costs incurred. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

Our leased assets may be used in joint oil and gas operations with other working interest owners. We recognize lease liabilities and ROU assets only when we are the signatory to a contract as an operator of joint properties. Such lease liabilities and ROU assets are determined and disclosed based on gross contractual obligations. Our lease costs are also presented on a gross contractual basis.

Nature of Leases

We lease certain office space, field equipment, vehicles and other equipment under cancelable and non-cancelable leases to support our operations. Certain of our lease agreements include lease and non-lease components. We account for these components as a single lease.

Lease right-of-use assets and liabilities are initially recorded on the lease commencement date based on the present value of lease payments over the lease term. As most of our lease contracts do not provide an implicit discount rate, we use our incremental borrowing rate which is determined based on information available at the commencement date of a lease. Leases may include renewal, purchase or termination options that can extend or shorten the term of the lease. The exercise of those options is at our discretion and is evaluated at inception and throughout the contract to determine if a modification of the lease term is required. Leases with a term of 12 months or less are not recorded as a right-of-use asset and liability.

Other Assets

Other assets at December 31, 2020 include $63.9 million of marketable securities held in our deferred compensation plans and $11.9 million of other investments, including surface acreage. Other assets at December 31, 2019 included $62.0 million of marketable securities held in our deferred compensation plans and $9.6 million of other investments, including surface acreage.

Stock-based Compensation Arrangements

We account for stock-based compensation under the fair value method of accounting. We grant various types of stock-based awards including restricted stock and performance-based awards. The fair value of our restricted stock awards and our performance-based awards (where the performance condition is based on internal performance metrics) is based on the market value of our common stock on the date of grant. The fair value of our performance-based awards where the performance condition is based on market conditions is estimated using a Monte Carlo simulation method.

We recognize stock-based compensation expense on a straight-line basis over the requisite service period for the entire award. The expense we recognize is net of estimated forfeitures. We estimate our forfeiture rate based on prior experience and adjust it as circumstances warrant. If actual forfeitures are different than expected, adjustments to recognize expense may be required in future

periods. To the extent possible, we limit the amount of shares to be issued for these awards by satisfying tax withholding requirements with cash. All awards have been issued at prevailing market prices at the time of grant and the vesting of these awards is based on an employee’s continued employment with us, with the exception of employment termination due to death, disability or retirement. For additional information regarding stock-based compensation, see Note 12.

Derivative Financial Instruments

All of our commodity derivative instruments are issued to manage the price risk attributable to our expected natural gas, NGLs and oil production. While there is risk that the financial benefit of rising natural gas, NGLs and oil prices may not be captured, we believe the benefits of stable and predictable cash flow are more important. Among these benefits are more efficient utilization of existing personnel and planning for future staff additions, the flexibility to enter into long-term projects requiring substantial committed capital, smoother and more efficient execution of our ongoing development drilling and production enhancement programs, more consistent returns on invested capital and better access to bank and other capital markets. All unsettled commodity derivative instruments are recorded in the accompanying consolidated balance sheets as either an asset or a liability measured at their fair value. In most cases, our derivatives are reflected on our consolidated balance sheets on a net basis by brokerage firm when they are governed by master netting agreements, which in an event of default, allows us to offset payables to and receivables from the defaulting counterparty. Changes in a derivative’s fair value are recognized in earnings. Cash flows from derivative contract settlements are reflected in operating activities in the accompanying consolidated statements of cash flows.

All realized and unrealized gains and losses on derivative instruments are accounted for using the mark-to-market accounting method. We recognize all unrealized and realized gains and losses related to these contracts in each period in derivative fair value in the accompanying consolidated statements of operations. Certain of our commodity derivatives are swaps where we receive a fixed price for our production and pay market prices to the counterparty. We also have collars which establish a minimum floor price and a predetermined ceiling price. We also have entered into basis swap agreements. The price we receive for our natural gas production can be more or less than the NYMEX price because of adjustments for delivery location (“basis”), relative quality and other factors; therefore, we have entered into natural gas basis swap agreements that effectively fix our basis adjustments. We have entered into propane basis swaps which lock in the differential between Mont Belvieu and international propane indexes. We have also entered into combined natural gas derivative instruments containing a fixed price swap and a sold option to extend the term or expand the volume (which we refer to as a swaption). The swap price is a fixed price determined at the time of the swaption contract. If the option is exercised, the contract will become a swap treated consistently with our fixed-price swaps. We also have the right to receive contingent consideration related to the sale of our North Louisiana assets. This derivative financial instrument is recorded as an asset in the accompanying consolidated balance sheets. This contingent consideration is based on future natural gas, NGLs and oil prices primarily based on published indexes. For additional information regarding our derivative instruments, see Note 10.

From time to time, we may enter into derivative contracts and pay or receive premium payments at the inception of the derivative contract which represent the fair value of the contract at its inception. These amounts would be included within the net derivative asset or liability on our consolidated balance sheets. The amounts paid or received for derivative premiums reduce or increase the amount of gains and losses that are recorded in the earnings each period as the derivative contracts settle. During 2020, we did not materially modify any existing derivative contracts.

Concentrations of Credit Risk

As of December 31, 2020, our primary concentrations of credit risk are the risks of collecting accounts receivable and the risk of counterparties’ failure to perform under derivative contracts. Most of our receivables are from a diverse group of companies, including major energy companies, pipeline companies, local distribution companies, financial institutions, commodity traders and end-users in various industries and such receivables are generally unsecured. The nature of our customers’ businesses may impact our overall credit risk, either positively or negatively, in that these entities may be similarly affected by changes in economic or other conditions. To manage risks of collecting accounts receivable, we monitor our counterparties’ financial strength and/or credit ratings and where we deem necessary, we obtain parent company guarantees, prepayments, letters of credit or other credit enhancements to reduce risk of loss. We do not anticipate a material impact on our financial results due to non-performance by third parties.

For the year ended December 31, 2020, we had no customer that accounted for 10% or more of total natural gas, NGLs and oil sales compared to one customer in both of the years ended December 31, 2019 and 2018. We believe that the loss of any one customer would not have an adverse effect on our ability to sell our natural gas, NGLs and oil production.

We have executed International Swap Dealers Association Master Agreements (“ISDA Agreements”) with counterparties for the purpose of entering into derivative contracts. To manage counterparty risk associated with our derivatives, we select and monitor counterparties based on assessment of their financial strength and/or credit ratings. We may also limit the level of exposure with any single counterparty. Additionally, the terms of our ISDA Agreements provide us and our counterparties with netting rights such that we may offset payables against receivables with a counterparty under separate derivative contracts. Our ISDA Agreements also generally contain set-off rights such that, upon the occurrence of defined acts of default by either us or a counterparty to a derivative contract, the non-defaulting party may set-off receivables owed under all derivative contracts against payables from other agreements

with that counterparty. None of our derivative contracts have a margin requirement or collateral provision that would require us to fund or post additional collateral prior to the scheduled cash settlement date.

At December 31, 2020, our derivative counterparties included twenty financial institutions and commodity traders, of which all but five are secured lenders in our bank credit facility. At December 31, 2020, our net derivative asset includes a payable to three counterparties not included in our bank credit facility totaling $4.5 million and a receivable from the remaining two counterparties of $5.2 million. In determining fair value of derivative assets, we evaluate the risk of non-performance and incorporate factors such as amounts owed under other agreements permitting set-off, as well as pricing of credit default swaps for the counterparty. Historically, we have not experienced any issues of non-performance by derivative counterparties. Net derivative liabilities are determined in part by using our market based credit spread to incorporate our theoretical risk of non-performance.

Asset Retirement Obligations

The fair value of asset retirement obligations is recognized in the period they are incurred, if a reasonable estimate of fair value can be made. Asset retirement obligations primarily relate to the abandonment of natural gas and oil producing facilities and include costs to dismantle and relocate or dispose of production platforms, gathering systems, wells and related structures. Estimates are based on historical experience of plugging and abandoning wells, estimated remaining lives of those wells based on reserve estimates, external estimates of the cost to plug and abandon the wells in the future and federal and state regulatory requirements. Depreciation of capitalized asset retirement costs will generally be determined on a units-of-production basis while accretion to be recognized will escalate over the life of the producing assets. See Note 9 for additional information.

Exit Costs

We recognize the fair value of a liability for an exit cost in the period in which a liability is incurred. The recognition and fair value estimation of an exit cost liability requires that management take into account certain estimates and assumptions. Fair value estimates are based on future discounted cash outflows required to satisfy the obligation. In periods subsequent to initial measurement, changes to an exit cost liability, including changes resulting from revisions to either the timing or the amount of estimated cash flows over the future contract period, are recognized as an adjustment to the liability in the period of the change utilizing the initial discount rate. These costs, including associated accretion expense, are included in exit and termination costs in the accompanying consolidated statements of operations. See Note 16 for additional information.

Contingencies

We are subject to legal proceedings, claims, and liabilities and environmental matters that arise in the ordinary course of business. We accrue for losses when such losses are considered probable and the amounts can be reasonably estimated. See Note 15 for a more detailed discussion regarding our contingencies.

Environmental Costs

Environmental expenditures are capitalized if the costs mitigate or prevent future contamination or if the costs improve environmental safety or efficiency of the existing assets. Expenditures that relate to an existing condition caused by past operations that have no future economic benefits are expensed.

Deferred Taxes

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to the differences between the financial statement carrying amounts of assets and liabilities and their tax bases as reported in our filings with the respective taxing authorities. Deferred tax assets are recorded when it is more likely than not that they will be realized. The realization of deferred tax assets is assessed periodically based on several interrelated factors. These factors may include our expectation to generate sufficient taxable income in the periods before tax credits and operating loss carryforwards expire. All deferred taxes are classified as long-term on our consolidated balance sheets.

Treasury Stock

Treasury stock purchases are recorded at cost. Upon reissuance, the cost of treasury shares held is reduced by the average purchase price per share of the aggregate treasury shares held.

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Accounting Standards

12 Months Ended

Dec. 31, 2020

New Accounting Pronouncements And Changes In Accounting Principles [Abstract]

Accounting Standards

(3) Accounting Standards

Recently Adopted

Financial Instruments – Credit Losses

In September 2016, an accounting standards update was issued that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standards update requires the use of a forward-looking

“expected loss” model as opposed to the current “incurred loss” model. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements.

Fair Value Measurement

In August 2018, an accounting standards update was issued which provides additional disclosure requirements for fair value measurements. This new standards update eliminates the requirement to disclose transfers between Level 1 and Level 2 of the fair value hierarchy and provides for additional disclosures for Level 3 fair value measurements. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements.

Not Yet Adopted

None that are expected to have a material impact.

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Dispositions

12 Months Ended

Dec. 31, 2020

Business Combinations [Abstract]

Dispositions

(4) Dispositions

We recognized a pretax net gain on the sale of assets of $110.8 million in the year ended December 31, 2020 compared to a pretax loss of $30.3 million in 2019 and a pretax loss of $10.7 million in 2018. The following describes the significant divestitures that are included in our consolidated results of operations for each of three years ended December 31, 2020, 2019 and 2018.

2020 Dispositions

North Louisiana. In third quarter 2020, we completed the sale of our North Louisiana assets for total consideration having an estimated fair value of $260.0 million. This estimated fair value reflects (i) cash proceeds of $245.0 million, before normal closing adjustments and (ii) $15.0 million in contingent consideration which represents the estimated fair value, on August 14, 2020, of the contingent consideration we are entitled to receive in the future should certain commodity price thresholds be met. During 2020, we recorded a pretax loss of $9.5 million, after closing adjustments and transaction costs.

• Contingent consideration. We are entitled to receive contingent consideration, annually through 2023, of up to $90.0 million based on future realization of certain natural gas and oil prices based on published indexes along with the realized NGLs price of the buyer. We used an option pricing model to determine the fair value of the contingent consideration which resulted in an estimated fair value of $15.0 million at closing. The fair value of the contingent consideration is classified as a current and noncurrent derivative asset on our consolidated balance sheet. We revalue the contingent consideration each reporting period, with any valuation changes being recorded as derivative fair value income or loss in our consolidated statements of operations. See also Note 10 and Note 11 for additional information.

• Divestiture contract obligation. As part of this sale, we retained certain midstream gathering, transportation and processing obligations through 2030. We determined the fair value of these obligations as of the closing date of the sale to be $479.8 million using a probability weighted discounted cash flow model. The divestiture contract obligation is included in current or non-current liabilities in our consolidated balance sheet based on the forecasted timing of payments. These costs are recognized in exit and termination costs in our consolidated statements of operations. See also Note 11 and Note 16 for additional information.

• Novated derivatives. During third quarter 2020, we entered into certain natural gas derivative positions which were subsequently novated to the buyer in conjunction with the completion of the sale. The unrealized fair value of these derivatives at the closing of the sale was a net liability of $12.1 million which was transferred to the buyer. The unrealized loss associated with the novated positions was offset by the gain that we recognized when the liability was transferred to the buyer. These offsetting amounts were recognized on our consolidated statements of operations in gain or loss on sale of assets.

Pennsylvania. In first quarter 2020, we completed the sale of our shallow legacy assets in Northwest Pennsylvania for proceeds of $1.0 million. Based upon the receipt of approval from state governmental authorities of a change in operatorship during that quarter, we recognized a pretax gain of $122.5 million primarily due to the elimination of the asset retirement obligation associated with these properties.

Other. In 2020, we sold miscellaneous material and supplies and other assets for proceeds of $127,000 resulting in a pretax loss of $2.2 million.

2019 Dispositions

Pennsylvania. In third quarter 2019, we sold, in three separate transactions, a proportionately reduced 2.5% overriding royalty, primarily in our Washington County, Pennsylvania leases for gross proceeds of $750.0 million. We recorded a pretax loss of $36.5 million related to this sale which represents closing adjustments and transaction fees. In second quarter 2019, we sold natural gas and oil property, primarily representing over 20,000 unproved acres, for proceeds of $34.0 million and recognized a pretax gain of $5.9 million.

Other. In 2019, we sold miscellaneous proved property, material and supplies, equipment and other assets for proceeds of $938,000 resulting in a pretax gain of $337,000.

2018 Dispositions

Pennsylvania. In fourth quarter 2018, we sold a proportionately reduced 1% overriding royalty in our Washington County, Pennsylvania leases for gross proceeds of $300.0 million. We recorded a pretax loss of $10.2 million related to this sale which represents closing adjustments and transaction fees.

Northern Oklahoma. In third quarter 2018, we sold properties in Northern Oklahoma for proceeds of $23.3 million and we recorded a pretax net loss of $39,000 related to this sale, after closing adjustments.

Other. In 2018, we sold miscellaneous proved property, materials and supplies and other assets for proceeds of $1.2 million, resulting in a pretax loss of $448,000.

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Revenues from Contracts with Customers

12 Months Ended

Dec. 31, 2020

Revenue From Contract With Customer [Abstract]

Revenues from Contracts with Customers

(5) Revenues from Contracts with Customers

Disaggregation of Revenue

We have identified three material revenue streams in our business: natural gas sales, NGLs sales, crude oil and condensate sales. Brokered revenue attributable to each product sales type is included here because the volume of product that we purchase is subsequently sold to separate counterparties in accordance with existing sales contracts under which we also sell our production. Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands):

	Year Ended December 31,
		2020		2019		2018
Natural gas sales	$	943,740	$	1,388,838	$	1,663,832
NGLs sales		578,454		681,134		931,360
Oil sales		85,519		185,453		255,885
Total natural gas, NGLs and oil sales		1,607,713		2,255,425		2,851,077
Sales of purchased natural gas		160,122		332,006		459,634
Sales of purchased NGLs		3,776		1,661		9,017
Other marketing revenue		9,375		11,842		14,109
Total	$	1,780,986	$	2,600,934	$	3,333,837

Performance Obligations and Contract Balance

A significant number of our product sales are short-term in nature with a contract term of one year or less. We typically satisfy our performance obligation upon transfer of control and record revenue in the month production is delivered to the purchaser. Settlement statements for certain gas and NGLs sales may be received 30 to 90 days after the date production is delivered, and as a result, we are required to estimate the amount of production that was delivered to the purchaser and the price that will be received for the sale of the product. We record the differences between our estimates and the actual amounts for product sales in the month that payment is received from the purchaser. We have internal controls in place for our estimation process and any identified differences between our revenue estimates and actual revenue received historically have not been significant. For the three years ended December 31, 2020, 2019 and 2018, revenue recognized in the reporting period related to performance obligations satisfied in prior reporting periods was not material. Under our sales contracts, we invoice customers once our performance obligations have been satisfied, at which point payment is unconditional. Accordingly, our product sales contracts do not give rise to contract assets or liabilities. Accounts receivable attributable to our revenue contracts with customers was $237.8 million at December 31, 2020 compared to $237.0 million at December 31, 2019.

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Income Taxes

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes

(6) Income Taxes

Our income tax benefit was $25.6 million for the year ended December 31, 2020 compared to $500.3 million in 2019 and $30.5 million in 2018. Reconciliation between the statutory federal income tax rate and our effective income tax rate is as follows:

	Year Ended December 31,
	2020		2019			2018
Federal statutory tax rate	21.0	%		21.0	%		21.0	%
State, net of federal benefit	5.2			3.8			(0.3	)
State rate and law change	4.3			1.8			0.9
Valuation allowances	(26.3	)		(3.8	)		(0.4	)
Non-deductible equity compensation	(0.7	)		(0.2	)		(0.1	)
Goodwill impairment	—			—			(19.4	)
Consolidated effective tax rate	3.5	%		22.6	%		1.7	%

Income tax (benefit) expense attributable to (loss) income before income taxes consists of the following (in thousands):

		2020									2019										2018
		Current		Deferred			Total			Current		Deferred			Total				Current					Deferred			Total
U.S. federal	$	(366	)	$	(24,489	)	$	(24,855	)	$	—	$	(434,585	)		$	(434,585	)		$		—	$		(25,322	)	$	(25,322	)
U.S. state and local		(157	)		(540	)		(697	)		6,147		(71,853	)			(65,706	)				—			(5,167	)		(5,167	)
Total	$	(523	)	$	(25,029	)	$	(25,552	)	$	6,147	$	(506,438	)		$	(500,291	)		$		—	$		(30,489	)	$	(30,489	)

Significant components of deferred tax assets and liabilities are as follows:

	December 31,
	2020			2019
	(in thousands)
Deferred tax assets:
Net operating loss carryforward	$	879,339		$	581,324
Divestiture contract obligation		132,352			—
Deferred compensation		16,635			16,815
Equity compensation		5,445			7,188
Asset retirement obligation		18,923			60,064
Interest expense carryover		15,757			18,035
Lease deferred tax assets		16,070			16,450
Cumulative mark-to-market loss		2,607			—
Other		12,082			11,072
Valuation allowances:
Federal		(152,499	)		(32,530	)
State, net of federal benefit		(226,520	)		(158,296	)
Total deferred tax assets		720,191			520,122
Deferred tax liabilities:
Depreciation and depletion		(839,869	)		(639,581	)
Cumulative mark-to-market gain		—			(25,957	)
Lease deferred tax liabilities		(15,058	)		(14,780	)
Other		(531	)		—
Total deferred tax liabilities		(855,458	)		(680,318	)
Net deferred tax liability	$	(135,267	)	$	(160,196	)

At December 31, 2020, deferred tax liabilities exceeded deferred tax assets by $135.3 million. As of December 31, 2020, we have a state valuation allowance of $226.5 million related to state tax attributes in Louisiana, Oklahoma, Pennsylvania, Texas and

West Virginia. As of December 31, 2020, we have federal valuation allowances of $152.5 million primarily related to our federal net operating loss carryforward (“NOL”), federal basis differences and charitable contribution carryforward. See the table below for activity related to these valuation allowances.

The changes in our deferred tax asset valuation allowances are as follows (in thousands):

		2020			2019			2018
Balance at the beginning of the year	$	(190,826	)	$	(120,347	)	$	(125,134	)
Charged to provision for income taxes:
State net operating loss carryforwards		(56,903	)		(25,710	)		(23,926	)
Federal net operating loss carryforwards		(113,988	)		13,780			11,716
Non-recoverable deferred tax assets		(7,433	)		(28,208	)		—
Other state valuation allowances		(11,321	)		(31,214	)		16,380
Other federal valuation allowances		244			346			494
Other		1,208			527			123
Balance at the end of the year	$	(379,019	)	$	(190,826	)	$	(120,347	)

At December 31, 2020, we had federal NOL carryforwards of $3.2 billion. This includes $1.4 billion that expires between 2021 and 2038 and also includes $1.8 billion of NOL carryforwards generated after 2017 that do not expire. We have state NOL carryforwards in Pennsylvania of $935.0 million that expire between 2027 and 2040 and in Louisiana, we have state NOL carryforwards of $1.4 billion that expire between 2034 and 2040. We file consolidated tax returns in the United States federal jurisdiction. We file separate company state income tax returns in Louisiana and Pennsylvania and file consolidated or unitary state income tax returns in Oklahoma, Texas and West Virginia. We are subject to U.S. federal income tax examinations for the years 2017 and after and we are subject to various state tax examinations for years 2016 and after. We have not extended the statute of limitation period in any income tax jurisdiction. Our policy is to recognize interest related to income tax expense in interest expense and penalties in general and administrative expense. We do not have any accrued interest or penalties related to tax amounts as of December 31, 2020. Throughout 2020 and 2019, our unrecognized tax benefits were not material.

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Net Income (Loss) Per Common Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Net Income (Loss) Per Common Share

(7) Net Income (Loss) per Common Share

Basic income or loss per share attributable to common stockholders is computed as (i) income or loss attributable to common stockholders (ii) less income allocable to participating securities (iii) divided by weighted average basic shares outstanding. Diluted income or loss per share attributable to common stockholders is computed as (i) basic income or loss attributable to common stockholders (ii) plus diluted adjustments to income allocable to participating securities (iii) divided by weighted average diluted shares outstanding. Diluted net income (loss) per share is calculated under both the two class method and the treasury stock method and the more dilutive of the two calculations is presented. The following table sets forth a reconciliation of net income or loss to basic income or loss attributable to common stockholders and to diluted income or loss attributable to common stockholders (in thousands except per share amounts):

	Year Ended December 31,
	2020			2019			2018
Net loss, as reported	$	(711,777	)	$	(1,716,297	)	$	(1,746,481	)
Participating basic earnings (a)		—			(251	)		(245	)
Basic net loss attributed to common stockholders		(711,777	)		(1,716,548	)		(1,746,726	)
Reallocation of participating earnings (a)		—			—			—
Diluted net loss attributed to common stockholders	$	(711,777	)	$	(1,716,548	)	$	(1,746,726	)
Net loss per common share:
Basic	$	(2.95	)	$	(6.92	)	$	(7.10	)
Diluted	$	(2.95	)	$	(6.92	)	$	(7.10	)

^(a)  Restricted stock Liability Awards represent participating securities because they participate in nonforfeitable dividends or distributions with common equity owners. Income allocable to participating securities represents the distributed and undistributed earnings attributable to the participating securities. Participating securities, however, do not participate in undistributed net losses.

The following table details basic weighted average common shares outstanding and diluted weighted average common shares outstanding (in thousands):

	Year Ended December 31,
	2020	2019		2018
Denominator:
Weighted average common shares outstanding – basic and diluted	241,373		247,970		246,171

Weighted average common shares – basic excludes 5.5 million shares of restricted stock Liability Awards held in our deferred compensation plans (although all awards are issued and outstanding upon grant) for the period ending December 31, 2020 compared to 3.1 million shares for both periods ending December 31, 2019 and 2018. Due to our net loss for the years ended December 31, 2020, 2019 and 2018, we excluded all outstanding equity grants from the computation of diluted net loss per share because the effect would have been anti-dilutive to the computations.

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Indebtedness

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Indebtedness

(8) Indebtedness

We had the following debt outstanding as of the dates shown below (in thousands) (bank debt interest rate at December 31, 2020 is shown parenthetically). The expenses of issuing debt are capitalized and included as a reduction to debt in the accompanying consolidated balance sheets. These costs are amortized over the expected life of the related instruments. When debt is retired before maturity, or modifications significantly change the cash flows, the related unamortized costs are expensed. No interest was capitalized in the three-year period ended December 31, 2020.

		December 31, 2020			December 31, 2019
Bank debt (2.2%)	$	702,000		$	477,000
Senior notes
4.875% senior notes due 2025		750,000			750,000
5.00% senior notes due 2022		169,589			511,886
5.00% senior notes due 2023		532,335			741,531
5.75% senior notes due 2021		25,496			374,139
5.875% senior notes due 2022		48,528			297,617
9.25% senior notes due 2026		850,000			—
Other senior notes due 2022		490			590
Total senior notes		2,376,438			2,675,763
Senior subordinated notes
5.00% senior subordinated notes due 2022		9,730			19,054
5.00% senior subordinated notes due 2023		7,712			7,712
5.75% senior subordinated notes due 2021		19,896			22,214
Total senior subordinated notes		37,338			48,980
Total debt		3,115,776			3,201,743
Unamortized premium		456			3,013
Unamortized debt issuance costs		(30,625	)		(31,819	)
Total debt (net of debt issuance costs)	$	3,085,607		$	3,172,937

Bank Debt

In April 2018, we entered into an amended and restated revolving bank facility, which we refer to as our bank debt or our bank credit facility, which is secured by substantially all of our assets and has a maturity date of April 13, 2023. The bank credit facility provides for a maximum facility amount of $4.0 billion and an initial borrowing base of $3.0 billion. The bank credit facility provides for a borrowing base subject to redeterminations and for event-driven unscheduled redeterminations. Our current bank group is composed of twenty-six financial institutions, with no one bank holding more than 7.0% of the total facility. The borrowing base may be increased or decreased based on our request and sufficient proved reserves, as determined by the bank group. The commitment amount may be increased to the borrowing base, subject to payment of a mutually acceptable commitment fee to those banks agreeing to participate in the facility increase. Borrowings under the bank facility can either be at the alternate base rate (“ABR,” as defined in the bank credit agreement) plus a spread ranging from 0.25% to 1.25% or at the LIBOR Rate (as defined in the bank credit agreement) plus a spread ranging from 1.25% to 2.25%. The applicable spread is dependent upon borrowings relative to the borrowing base. We may elect, from time to time, to convert all or any part of our LIBOR loans to ABR loans or to convert all or any part of our ABR

loans to LIBOR loans. The weighted average interest rate was 2.6% for the year ended December 31, 2020 compared to 3.8% for the year ended December 31, 2019 and 3.7% for the year ended December 31, 2018. A commitment fee is paid on the undrawn balance based on an annual rate of 0.30% to 0.375%. At December 31, 2020, the commitment fee was 0.3%, the interest rate margin was 2.0% on our LIBOR loans and 1.0% on our ABR loans.

On December 31, 2020, bank commitments totaled $2.4 billion and the outstanding balance under our bank credit facility was $702.0 million, before deducting debt issuance costs. Additionally, we had $334.6 million of undrawn letters of credit leaving $1.4 billion of committed borrowing capacity available under the facility. As part of our redetermination completed in September 2020, our borrowing base was reaffirmed for $3.0 billion and our bank commitment was also reaffirmed at $2.4 billion. As part of our redetermination completed in March 2020, we agreed to return to a semi-annual borrowing base redetermination, an increase in the applicable margin of 50 basis points on drawn facility balances and an increase to the letter of credit sublimit. As of February 19, 2021, we have sufficient available borrowing capacity under our credit facility to satisfy any requests for additional collateral our transportation counterparties may request in the event of a credit rating downgrade.

New Senior Notes

In January 2020, we issued $550.0 million aggregate principal amount of 9.25% senior notes due 2026 (the “9.25% Notes”) for an estimated net proceeds of $541.4 million after underwriting discounts and commissions of $8.6 million. The notes were issued at par. The 9.25% Notes were offered to qualified institutional buyers and to non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S under the Securities Act. Interest due on the 9.25% Notes is payable semi-annually in February and August and is unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. On or after February 1, 2025, we may redeem the 9.25% Notes, in whole or in part and from time to time, at 100% of the principal amounts plus accrued and unpaid interest. We may redeem the notes prior to their maturity at redemption prices based on a premium, plus accrued and unpaid interest as described in the indenture governing the 9.25% Notes.  Upon occurrence of certain changes in control, we must offer to repurchase the 9.25% Notes. The 9.25% Notes are unsecured and are subordinated to all of our existing and future secured debt, rank equally with all of our existing and future unsecured debt and rank senior to all of our existing and future subordinated debt. On the closing of the 9.25% Notes, we used the proceeds to redeem $500.0 million of our senior notes due 2021 and 2022 with the remainder applied to our borrowings under our bank credit facility.

In September 2020, we issued an additional $300.0 million aggregate principal amount of our 9.25% Notes (the “Additional 9.25% Notes”) for an estimated net proceeds of $295.0 million after underwriting expenses and commissions of $5.0 million. On the closing of the issuance of the Additional 9.25% Notes, we used these proceeds, along with proceeds from our credit facility, to redeem $500.0 million of various senior and senior subordinated notes. In November 2020, our 9.25% Notes and our Additional 9.25% Notes were exchanged for an equal principal amount of registered notes pursuant to an effective registration statement on Form S-4 filed with the SEC on November 5, 2020 under the Securities Act (the “New Notes”). The New Notes are identical to the 9.25% Notes and the Additional 9.25% Notes except the New Notes are registered under the Securities Act and do not have restrictions on transfer, registration rights or provisions for additional interest.

In January 2021, we issued $600.0 million aggregate principal amount of 8.25% senior notes due 2029 (the “8.25% Notes”) for an estimated net proceeds of $590.8 million after underwriting discounts and commissions of $9.2 million. The notes were issued at par. The 8.25% Notes were offered to qualified institutional buyers and to non-U.S. persons outside the United States in compliance with Rule 144A and Regulation S under the Securities Act of 1933, as amended (the “Securities Act”). Interest due on the 8.25% Notes is payable semi-annually in January and July and is unconditionally guaranteed on a senior unsecured basis by all of our subsidiary guarantors. On or after January 15, 2027, we may redeem the 8.25% Notes in whole or in part from time to time, at 100% of the principal amounts plus accrued and unpaid interest. We may redeem the notes prior to their maturity at redemption prices based on a premium, plus accrued and unpaid interest as described in the indenture governing the 8.25% Notes. Upon occurrence of certain changes in control, we must offer to repurchase the 8.25% Notes. The 8.25% Notes are unsecured and are subordinated to all of our existing and future secured debt, rank equally with all of our existing and future unsecured debt and rank senior to all of our existing and future subordinated debt. Upon closing of the 8.25% Notes, we used the proceeds to repay borrowings under our bank credit facility.

Early Extinguishment of Debt

In September 2020, we purchased for cash $500.0 million aggregate principal amount of our 5.75% senior notes due 2021, 5.00% senior notes due 2022, 5.875% senior notes due 2022, 5.00% senior notes due 2023, 5.75% senior subordinated notes due 2021 and 5.00% senior subordinated note due 2022. An early cash tender of $5.3 million was paid to note holders who tendered their notes within the ten business day early offer period. We recorded a loss on early extinguishment of debt in third quarter 2020 of $8.0 million, net of transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt. The cash tender offer and the early cash tender premium were financed from the issuance of the Additional 9.25% Notes (see New Senior Notes above) and proceeds from our credit facility. In August, the proceeds received from the sale of our North Louisiana assets were used to reduce borrowings under our credit facility.

In January 2020, we purchased for cash $500.0 million aggregate principal amount of our 5.75% senior notes due 2021 and our 5.875% senior notes due 2022. An early cash tender of $15.1 million was paid to note holders who tendered their notes within the ten business day early offer period. We recorded a loss on early extinguishment of debt in first quarter 2020 of $17.5 million, net of transaction call premium costs and the expensing of the remaining deferred financing costs on the repurchased debt. The cash tender offer and early cash tender premium were financed from the issuance of the 9.25% Notes. (see New Senior Notes above).

In 2020, we purchased in the open market $1.1 million principal amount of our 5.75% senior subordinated notes due 2021, $1.0 million principal amount of our 5.00% senior subordinated notes due 2022, $12.5 million principal amount of our 5.75% senior notes due 2021, $8.1 million principal amount of our 5.875% senior notes due 2022, $51.3 million principal amount of our 5.00% senior notes due 2022 and $86.9 million principal amount of our 5.00% senior notes due 2023. We recognized a gain on early extinguishment of debt of $39.6 million, net of transaction costs and the expensing of the remaining deferred financing costs on the repurchased debt.

In 2019, we purchased in the open market $101.8 million principal amount of our 5.75% senior notes due 2021, $31.6 million principal amount of our 5.875% senior notes due 2022 and $68.1 million principal amount of our 5.00% senior notes due 2022. We recognized a gain of $5.4 million on early extinguishment of debt, including transaction costs and the expensing of the remaining deferred financing costs on the repurchased debt.

Senior Notes and Senior Subordinated Notes

If we experience a change of control, noteholders may require us to repurchase all or a portion of our senior subordinated notes and our senior notes at 101% of the principal amount plus accrued and unpaid interest, if any. All of the senior subordinated notes and the guarantees by our subsidiary guarantors are general, unsecured obligations and are subordinated to our bank debt and are subordinated to existing and future senior debt that we or our subsidiary guarantors are permitted to incur.

Guarantees

Range Resources Corporation is a holding company which owns no operating assets and has no significant operations independent of its subsidiaries. The guarantees by our wholly-owned subsidiaries, which are directly or indirectly owned by Range, of our senior notes, our senior subordinated notes and our bank credit facility are full and unconditional and joint and several, subject to certain customary release provisions. A subsidiary guarantor may be released from its obligations under the guarantee:

• in the event of a sale or other disposition of all or substantially all of the assets of the subsidiary guarantor or a sale or other disposition of all the capital stock of the subsidiary guarantor, to any corporation or other person (including an unrestricted subsidiary of Range) by way of merger, consolidation, or otherwise; or

• if Range designates any restricted subsidiary that is a guarantor to be an unrestricted subsidiary in accordance with the terms of the indenture.

Debt Covenants and Maturity

Our bank credit facility contains negative covenants that limit our ability, among other things, to pay cash dividends, incur additional indebtedness, sell assets, enter into certain hedging contracts, change the nature of our business or operations, merge, consolidate, or make certain investments. In addition, we are required to maintain a ratio of EBITDAX (as defined in the credit agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the credit agreement) of no less than 1.0. In addition, the ratio of the present value of proved reserves (as defined in the credit agreement) to total debt must be equal to or greater than 1.5 until Range has two investment grade ratings. We were in compliance with applicable covenants under the bank credit facility at December 31, 2020.

The following is the principal maturity schedule for our long-term debt outstanding as of December 31, 2020 (in thousands):

	Year Ended December 31,
2021	$	45,392
2022		228,337
2023		1,242,047
2024		—
2025		750,000
Thereafter		850,000
	$	3,115,776

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Asset Retirement Obligations

12 Months Ended

Dec. 31, 2020

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligations

(9) Asset Retirement Obligations

Our asset retirement obligations (“ARO”) primarily represent the present value of the estimated amounts we will incur to plug, abandon and remediate our producing properties at the end of their productive lives. Significant inputs used in determining such obligations include estimates of plugging and abandonment costs, estimated future inflation rates and well lives. The inputs are calculated based on historical data as well as current estimated costs. The following is a reconciliation of our liability for plugging and abandonment costs as of December 31, 2020 and 2019 (in thousands):

	2020			2019
Beginning of period	$	251,076		$	312,754
Liabilities incurred		1,483			4,063
Acquisitions		123			—
Liabilities settled		(4,634	)		(5,953	)
Disposition of wells		(176,748	)		(82,576	)
Accretion expense		7,518			15,658
Change in estimate		1,004			7,130
End of period		79,822			251,076
Less current portion		(6,689	)		(2,393	)
Long-term asset retirement obligations	$	73,133		$	248,683

Accretion expense is recognized as an increase to depreciation, depletion and amortization expense in the accompanying consolidated statements of operations.

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Derivative Activities

12 Months Ended

Dec. 31, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Activities

(10) Derivative Activities

We use commodity-based derivative contracts to manage exposure to commodity price fluctuations. We do not enter into these arrangements for speculative or trading purposes. We do not utilize complex derivatives as we typically utilize commodity swap, calls, swaptions or collar contracts to (1) reduce the effect of price volatility of the commodities we produce and sell and (2) support our annual capital budget and expenditure plans. Every derivative instrument is required to be recorded on our consolidated balance sheets as either an asset or a liability measured at its fair value. Their fair value, which is represented by the estimated amount that would be realized upon termination, based on a comparison of the contract price and a reference price (generally NYMEX for natural gas and crude oil or Mont Belvieu for NGLs), approximated a net derivative liability of $18.0 million at December 31, 2020. These contracts expire monthly through December 2021. The following table sets forth the derivative volumes by year as of December 31, 2020, excluding our basis and freight swaps and divestiture contingent consideration which are discussed separately below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price
			Swap		Sold Put	Floor	Ceiling
Natural Gas (1)
2021	Swaps	550,000 Mmbtu/day	$	2.77
January-October 2021	Collars	342,237 Mmbtu/day				$ 2.51	$ 3.00
2021	Three-way Collars	240,000 Mmbtu/day			$ 1.99	$ 2.33	$ 2.60
Crude Oil
2021	Swaps	3,479 bbls/day	$	46.11
NGLs (C3-Propane)
January-June 2021	Swaps	6,972 bbls/day	$	0.55/gallon
January-June 2021	Collars	5,000 bbls/day				$ 0.50/gallon	$ 0.60/gallon
NGLs (NC4-Normal Butane)
January-March 2021	Swaps	2,000 bbls/day	$	0.71/gallon
January-March 2021	Collars	1,000 bbls/day				$ 0.60/gallon	$ 0.70/gallon
NGLs (C5-Natural Gasoline)
January-September 2021	Swaps	2,821 bbls/day	$	0.92/gallon
January-March 2021	Calls	1,000 bbls/day	$	0.95/gallon

⁽¹⁾ We also sold natural gas call swaptions of 280,000 Mmbtu/day for 2022 at a weighted average price of $2.81 per Mmbtu.

Basis Swap Contracts

In addition to the swaps, collars and swaptions above, at December 31, 2020, we had natural gas basis swap contracts which lock in the differential between NYMEX and certain of our physical pricing points in Appalachia. These contracts settle monthly through December 2024 and include a total volume of 180,510,000 Mmbtu. The fair value of these contracts was a net derivative asset of $3.7 million on December 31, 2020.

At December 31, 2020, we also had propane spread swap contracts which lock in the differential between Mont Belvieu and international propane indexes. The contracts settle monthly in 2021. The fair value of these contracts was a net derivative asset of $794,000 on December 31, 2020.

Freight Swap Contracts

In connection with our international propane sales, we utilize propane swaps. To further hedge our propane price, at December 31, 2020, we had freight swap contracts which lock in the freight rate for a specific trade route on the Baltic Exchange. These contracts settle monthly and cover 5,000 metric tons per month in second quarter 2021 and 10,000 metric tons for the remainder of the year. The fair value of these contracts was a net derivative asset of $1.1 million on December 31, 2020.

Divestiture Contingent Consideration

In addition to the derivatives described above, our right to receive contingent consideration in conjunction with the sale of our North Louisiana assets was determined to be a derivative financial instrument that is not designated as a hedging instrument. The contingent consideration of up to $90.0 million is based on future realization of  natural gas and oil prices based on published indexes and realized NGLs prices of the buyer for the years 2021, 2022 and 2023. All changes in the fair value are recognized as a gain or loss in earnings in the period they occur in derivative fair value income or loss in our consolidated statements of operations. We currently do not expect to receive any value for the period from July through December 2020. The fair value of this instrument on December 31, 2020 was a derivative asset of $16.0 million.

Derivative Assets and Liabilities

The combined fair value of derivatives included in the accompanying consolidated balance sheets as of December 31, 2020 and 2019 is summarized below (in thousands). As of December 31, 2020, we are conducting derivative activities with twenty counterparties, of which all but five are secured lenders in our bank credit facility. We believe all of these counterparties are acceptable credit risks. At times, such risks may be concentrated with certain counterparties. The credit worthiness of our counterparties is subject to periodic review. The assets and liabilities are netted where derivatives with both gain and loss positions are held by a single counterparty and we have master netting arrangements.

		December 31, 2020
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	33,559	$	(16,821	)	$	16,738
	–collars		7,016		(2,329	)		4,687
	–three-way collars		535		(6,139	)		(5,604	)
	–basis swaps		7,894		(3,502	)		4,392
Crude oil	–swaps		2,465		(829	)		1,636
NGLs	–C3 propane spread		4,863		(4,863	)		—
	–C3 propane collars		—		(107	)		(107	)
Freight	–swaps		2,310		—			2,310
Divestiture contingent consideration			15,960		—			15,960
		$	74,602	$	(34,590	)	$	40,012

		December 31, 2020
		Gross Amounts of  Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(10,120	)	$	16,821	$	6,701
	–swaptions		(9,803	)		—		(9,803	)
	–collars		—			2,329		2,329
	–three-way collars		(18,353	)		6,139		(12,214	)
	–basis swaps		(4,197	)		3,502		(695	)
Crude oil	–swaps		(5,471	)		829		(4,642	)
NGLs	–C3 propane spread		(4,069	)		4,863		794
	–C3 propane swaps		(8,243	)		—		(8,243	)
	–C3 propane collars		(3,086	)		107		(2,979	)
	–C5 natural gasoline swaps		(4,897	)		—		(4,897	)
	–C5 natural gasoline calls		(546	)		—		(546	)
	–NC4 butane swaps		(651	)		—		(651	)
	–NC4 butane collars		(401	)		—		(401	)
Freight	–swaps		(1,206	)		—		(1,206	)
		$	(71,043	)	$	34,590	$	(36,453	)

		December 31, 2019
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	134,364	$	(2,913	)	$	131,451
	–swaptions		—		(1,325	)		(1,325	)
	–basis swaps		10,766		(1,092	)		9,674
Crude oil	–swaps		3,893		(4,794	)		(901	)
	–swaptions		—		(1,597	)		(1,597	)
	–calls		—		(349	)		(349	)
NGLs	–C3 propane spread swaps		1,913		(1,913	)		—
	–NC4 butane swaps		167		—			167
	–C5 natural gasoline swaps		60		(127	)		(67	)
Freight	–swaps		1,529		(1,028	)		501
		$	152,692	$	(15,138	)	$	137,554

		December 31, 2019
		Gross Amounts of  Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(1,657	)	$	2,913	$	1,256
	–swaptions		(2,594	)		1,325		(1,269	)
	–basis swaps		(1,371	)		1,092		(279	)
Crude oil	–swaps		(4,814	)		4,794		(20	)
	–swaptions		(2,254	)		1,597		(657	)
	–calls		(349	)		349		—
NGLs	–C3 propane spread swaps		(16,040	)		1,913		(14,127	)
	–C5 natural gasoline swaps		(127	)		127		—
Freight	–swaps		—			1,028		1,028
		$	(29,206	)	$	15,138	$	(14,068	)

The effects of our derivatives on our consolidated statements of operations for the last three years are summarized below (in thousands).

	Derivative Fair Value Income (Loss)
	Year Ended December 31,
	2020			2019			2018
Commodity swaps	$	158,248		$	219,968		$	(57,950	)
Swaptions		(4,955	)		333			(6,556	)
Collars		3,304			(3,903	)		17,583
Three-way collars		(16,346	)		—			—
Basis swaps		48,278			6,661			(1,104	)
Calls		(558	)		(349	)		(2,653	)
Freight swaps		(1,230	)		3,971			(512	)
Divestiture contingent consideration		970			—			—
Total	$	187,711		$	226,681		$	(51,192	)

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Fair Value Measurements

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements

(11) Fair Value Measurements

Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. There are three approaches for measuring the fair value of assets and liabilities: the market approach, the income approach and the cost approach, each of which includes multiple valuation techniques. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets or liabilities. The income approach uses valuation techniques to measure fair value by converting future amounts, such as cash flows or earnings, into a single present value amount using current market expectations about those future amounts. The cost approach is based on the amount that would currently be required to replace the service capacity of an asset. This is often referred to as current replacement cost. The cost approach assumes that the fair value would not exceed what it would cost a market participant to acquire or construct a substitute asset of comparable utility, adjusted for obsolescence.

The fair value accounting standards do not prescribe which valuation technique should be used when measuring fair value and does not prioritize among the techniques. These standards establish a fair value hierarchy that prioritizes the inputs used in applying the various valuation techniques. Inputs broadly refer to the assumptions that market participants use to make pricing decisions, including assumptions about risk. Level 1 inputs are given the highest priority in the fair value hierarchy, while Level 3 inputs are given the lowest priority. The three levels of the fair value hierarchy are as follows:

• Level 1 – Observable inputs that reflect unadjusted quoted prices for identical assets or liabilities in active markets as of the reporting date. Active markets are those in which transactions for the asset or liability occur in sufficient frequency and volume to provide pricing information on an ongoing basis.

• Level 2 – Observable market-based inputs or unobservable inputs that are corroborated by market data. These are inputs other than quoted prices in active markets included in Level 1, which are either directly or indirectly observable as of the reporting date.

• Level 3 – Unobservable inputs for which there is little, if any, market activity for the asset or liability being measured. These inputs reflect management’s best estimates of the assumptions market participants would use in determining fair value. Our Level 3 measurements consist of instruments using standard pricing models and other valuation methods that utilize unobservable pricing inputs that are significant to the overall value.

Valuation techniques that maximize the use of observable inputs are favored. Assets and liabilities are classified in their entirety based on the lowest priority level of input that is significant to the fair value measurement. The assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement of assets and liabilities within the levels of the fair value hierarchy. When transfers between levels occur, it is our policy to assume the transfer occurred at the date of the event or change in circumstances that caused the transfer.

Fair Values-Recurring

We use a market approach for our recurring fair value measurements and endeavor to use the best information available. Accordingly, valuation techniques that maximize the use of observable impacts are favored. The following tables present the fair value hierarchy table for assets and liabilities measured at fair value, on a recurring basis (in thousands):

		Fair Value Measurements at December 31, 2020 Using:
		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2020
Trading securities held in the deferred compensation plans		$	63,942	$	—		$	—		$	63,942
Derivatives	–swaps		—		6,642			—			6,642
	–calls		—		—			(546	)		(546	)
	–collars		—		7,016			(3,487	)		3,529
	–three-way collars		—		(17,818	)		—			(17,818	)
	–basis swaps		—		4,491			—			4,491
	–swaptions		—		—			(9,803	)		(9,803	)
Derivatives–freight swaps			—		1,104			—			1,104
Divestiture contingent consideration			—		15,960			—			15,960

		Fair Value Measurements at December 31, 2019 Using:
		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2019
Trading securities held in the deferred compensation plans		$	62,009	$	—		$	—		$	62,009
Derivatives	–swaps		—		131,886			—			131,886
	–calls		—		(349	)		—			(349	)
	–basis swaps		—		(4,732	)		—			(4,732	)
	–swaptions		—		—			(4,848	)		(4,848	)
Derivatives	–freight swaps		—		1,529			—			1,529

Our trading securities in Level 1 are exchange-traded and measured at fair value with a market approach using December 31, 2020 market values. Derivatives in Level 2 are measured at fair value with a market approach using third-party pricing services, which have been corroborated with data from active markets or broker quotes. Derivatives in Level 3 are measured at fair value with a market approach using third-party pricing services, which have been corroborated with data from active markets or broker quotes. As of December 31, 2020, a portion of our natural gas derivative instruments contain swaptions where the counterparty has the right, but not the obligation, to enter into a fixed price swap on a predetermined date. In addition to our swaptions in Level 3, at December 31, 2020, we have propane and butane collars and natural gasoline calls. Subjectivity in the volatility factors utilized can cause a significant change in the fair value measurement of our derivatives in Level 3. For our swaptions, we used a weighted average implied volatility of 24%. We utilized a range of implied volatilities from 34% to 66% for our butane and propane collars and natural gasoline calls with a

weighted average implied volatility of approximately 44%. The following is a reconciliation of the beginning and ending balances for derivative instruments classified as Level 3 in the fair value hierarchy (in thousands):

		Year Ended December 31, 2020
Balance at December 31, 2019	$	(4,848	)
Total gains (losses):
Included in earnings		(13,836	)
Settlements, net		2,743
Transfers in and/or out of Level 3		2,105
Balance at December 31, 2020	$	(13,836	)

Our trading securities held in the deferred compensation plan are accounted for using the mark-to-market accounting method and are included in other assets in the accompanying consolidated balance sheets. We elected to adopt the fair value option to simplify our accounting for the investments in our deferred compensation plan. Interest, dividends, and mark-to-market gains/losses are included in deferred compensation plan expense in the accompanying consolidated statements of operations. For the year ended December 31, 2020, interest and dividends were $713,000 and mark-to-market was a gain of $6.3 million. For the year ended December 31, 2019, interest and dividends were $1.1 million and mark-to-market was a gain of $8.5 million. For the year ended December 31, 2018, interest and dividends were $1.1 million and mark-to-market was a loss of $7.9 million.

Divestiture Contingent Consideration. In August 2020, we completed the sale of our North Louisiana assets where we are entitled to receive contingent consideration of up to $90 million, based on future realization of natural gas and oil prices based on published indexes along with NGLs prices based on the realized NGLs prices of the buyer. We used an option pricing model to estimate the fair value of the contingent consideration using significant Level 2 inputs that include quoted future commodity prices based on active markets and implied volatility factors. See also Note 4 and Note 10 for additional information.

Fair Values-Non recurring

Due to declines in commodity prices and estimated reserves over the last three years, there were indications that the carrying values of certain of our natural gas and oil properties may be impaired and undiscounted future cash flows attributed to these assets indicated their carrying amounts were not expected to be recovered. Their fair value is generally measured using an income approach based upon internal estimates of future production levels, prices, drilling and operating costs and discount rates, which are Level 3 inputs. In some cases, we also considered the potential sale of these properties and comparable market value, if available. In fourth quarter 2019, there were indicators that the carrying value of our North Louisiana properties may be impaired due to a shift in business strategy employed by management and also the possibility of a divestiture of these assets. As a result of the impairment evaluation, where we used an income approach, also referred to as a discounted cash flow model, to assess fair value and we recorded an impairment of $1.1 billion. An additional guideline transaction market approach was also utilized to corroborate the estimated fair value. The expected future net cash flows used published future prices and were discounted using an annual rate of twelve percent to determine fair value. In first quarter 2020, we recognized an additional impairment charge of $77.0 million related to these North Louisiana properties that reduced the carrying value to the anticipated sales proceeds which is a market approach using Level 2 inputs. See also Note 4 for additional information. During 2018, we increased our interest in certain properties in our shallow legacy oil and natural gas assets in Northwest Pennsylvania for a minimal dollar amount for which the fair value was previously determined to be zero. As a result, in 2018 we recorded additional impairment of $15.3 million related to these properties. Also in early 2018, there were indicators that the carrying value of certain of our oil and gas properties in Oklahoma may be impaired and undiscounted future cash flows attributed to these assets indicated their carrying amounts were not expected to be recovered. We recorded non-cash impairment charges of $7.3 million related to these properties. The following table presents the value of these assets measured at fair value on a nonrecurring basis at the time impairment was recorded (in thousands):

	Year Ended December 31,
	2020				2019				2018
	Fair Value		Impairment		Fair Value		Impairment		Fair Value		Impairment
Natural gas and oil properties	$	290,500	$	77,000	$	370,500	$	1,093,531	$	32,516	$	22,614

North Louisiana Divestiture. We have recorded a divestiture contract obligation in conjunction with the sale of our North Louisiana assets. The fair value of this obligation was determined as of the closing date using Level 3 inputs based on a probability-weighted forecast that considers historical results, market conditions and various potential development plans of the buyer to arrive at the estimated present value of the future payments. Inherent in this fair value calculation are numerous other assumptions and judgements including the credit-adjusted discount rate as well as the development plans of the buyer and our probability weighted

forecast of those drilling plans, market conditions and the ultimate usage by the buyer of each facility included in the agreement, all of which are inherently uncertain and can alter the amount and timing of future payments. A significant portion of this obligation is a gas processing agreement that includes a deficiency payment if the minimum volume commitment is not met. The agreement also includes additional transportation agreements that are based on contractual rates applied to a minimum volume usage. The present value of future cash payments was determined using a 12 percent discount rate. Our probability-weighted forecast of drilling plans includes probable development scenarios by the buyer ranging from no incremental future drilling up to a two rig development plan. If development does not occur as we have assumed, the carrying value of the liability could increase by approximately $29.0 million. Additionally, our probability weighted forecast contemplated a percentage of estimated production volumes flowing to processing facilities based on our historical experience as well as contractual terms and assumptions regarding future market conditions.  The percentage allocated to these facilities ranged from 34% in 2020 and increasing to 100% in 2026. If the flow of production volumes remained at 34% through 2030, the carrying value of the liability could increase by approximately $17.9 million. See also Note 4 and Note 16 for additional information.

Leases. As part of our ongoing effort to reduce general and administrative expense due to both the lower commodity price environment and in conjunction with the sale of our North Louisiana assets, we have vacated one floor in our Fort Worth headquarters. We have recorded an impairment related to this lease of $2.0 million which is included in impairment of proved property and other assets in our consolidated statement of operations for 2020. In fourth quarter 2019, we announced the closing of our Houston office. We recorded an impairment related to our Houston office lease ROU asset of $2.1 million which is also included in impairment of proved property and other assets for the year ended December 31, 2019.

Fair Values-Reported

The following table presents the carrying amounts and the fair values of our financial instruments as of December 31, 2020 and 2019 (in thousands):

	December 31, 2020						December 31, 2019
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, collar, options and basis swaps	$	24,052		$	24,052		$	137,554		$	137,554
Divestiture contingent consideration		15,960			15,960			—			—
Marketable securities (a)		63,942			63,942			62,009			62,009
(Liabilities):
Commodity swaps, collar, options and basis swaps		(36,453	)		(36,453	)		(14,068	)		(14,068	)
Bank credit facility (b)		(702,000	)		(702,000	)		(477,000	)		(477,000	)
5.75% senior notes due 2021 (b)		(25,496	)		(25,474	)		(374,139	)		(375,909	)
5.00% senior notes due 2022 (b)		(169,589	)		(170,128	)		(511,886	)		(501,582	)
5.875% senior notes due 2022 (b)		(48,528	)		(48,471	)		(297,617	)		(294,757	)
Other senior notes due 2022 (b)		(490	)		(490	)		(590	)		(592	)
5.00% senior notes due 2023 (b)		(532,335	)		(521,699	)		(741,531	)		(683,291	)
4.875% senior notes due 2025 (b)		(750,000	)		(707,918	)		(750,000	)		(645,098	)
9.25% senior notes due 2026 (b)		(850,000	)		(888,208	)		—			—
5.75% senior subordinated notes due 2021 (b)		(19,896	)		(19,589	)		(22,214	)		(21,539	)
5.00% senior subordinated notes due 2022 (b)		(9,730	)		(9,247	)		(19,054	)		(17,011	)
5.00% senior subordinated notes due 2023 (b)		(7,712	)		(6,604	)		(7,712	)		(7,654	)
Deferred compensation plan (c)		(96,563	)		(96,563	)		(74,472	)		(74,472	)

^(a) Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges.

^(b) The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs.

^(c) The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

Our current assets and liabilities contain financial instruments, the most significant of which are trade accounts receivables and payables. We believe the carrying values of our current assets and liabilities approximate fair value. Our fair value assessment incorporates a variety of considerations, including (1) the short-term duration of the instruments and (2) our historical incurrence of and expected future insignificance of bad debt expense. Non-financial liabilities initially measured at fair value include asset retirement obligations, operating lease liabilities and the divestiture contract obligation.

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Stock-based Compensation Plans

12 Months Ended

Dec. 31, 2020

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-based Compensation Plans

(12) Stock-Based Compensation Plans

Description of the Plans

We have two active equity-based stock plans, our Amended and Restated 2005 Equity-Based Compensation Plan, which we refer to as the 2005 Plan and the Amended and Restated 2019 Equity-Based Compensation Plan, which was approved by our stockholders in May 2019 and amended in May 2020. Under these plans, the Compensation Committee of the board of directors may grant, various awards to non-employee directors and employees. Shares issued as a result of awards granted are generally new common shares but can be funded out of treasury shares, if available.

Total Stock-Based Compensation Expense

Stock-based compensation expense represents amortization of restricted stock and performance units. The following table details the amount of stock-based compensation that is allocated to functional expense categories for each of the years in the three-year period ended December 31, 2020 (in thousands):

	2020		2019			2018
Direct operating expense	$	1,078		$	1,928		$	2,109
Brokered natural gas and marketing expense		1,416			1,856			1,452
Exploration expense		1,279			1,566			1,921
General and administrative expense		32,905			35,061			43,806
Termination costs		2,165			1,971			—
Total stock-based compensation	$	38,843		$	42,382		$	49,288

Unlike the other forms of stock-based compensation expense mentioned above, the mark-to-market of the liability related to the vested restricted stock held in our deferred compensation plans is directly tied to the change in our stock price and not directly related to the functional expenses. Therefore, the liability related to the vested restricted stock held in our deferred compensation plans is not allocated to the functional categories and is reported as deferred compensation plan expense in the accompanying consolidated statements of operations.

In 2020, we recorded $4.3 million additional tax expense for the tax effect of excess financial accounting expense over the corporate income tax deduction for equity compensation vested in the year compared to $3.4 million in 2019 and $3.6 million in 2018.

Stock-Based Awards

Restricted Stock Awards. We grant restricted stock units under our equity-based stock compensation plans. These restricted stock units, which we refer to as restricted stock Equity Awards, generally vest over a three-year period and are contingent on the recipient’s continued employment. These awards are net settled by withholding shares to satisfy income tax withholding payments due upon vesting. The remaining shares are remitted to individual brokerage accounts. The grant date fair value of the Equity Awards is based on the fair market value of our common stock on the date of grant. Shares to be delivered upon vesting are made available from authorized but unissued shares or shares held as treasury stock.

The compensation committee also grants restricted stock to certain employees and non-employee directors of the board of directors as part of their compensation. We also grant restricted stock to certain employees for retention purposes. Compensation expense is recognized over the balance of the vesting period, which is typically three years for employee grants and immediate vesting for non-employee directors. In May 2020, vesting for non-employee directors was changed to one year after grant date. All restricted stock awards are issued at prevailing market prices at the time of the grant and the vesting is based upon an employee’s continued employment with us. Prior to vesting, all restricted stock awards have the right to vote such stock (by the trustee) and receive dividends thereon. Upon grant of these restricted shares, which we refer to as restricted stock Liability Awards, the majority of these shares are generally placed in our deferred compensation plan and, upon vesting, withdrawals are allowed in either cash or in stock. These Liability Awards are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market amount is reported in deferred compensation plan expense in the accompanying consolidated statements of operations. Historically, we have used authorized but unissued shares of stock when restricted stock is granted. However, we also may utilize treasury shares when available.

Stock-Based Performance Units. We grant three types of performance share awards: two of which are based on performance conditions measured against internal performance metrics (Production Growth Awards or “PG-PSUs” and Reserve Growth Awards or “RG-PSUs”) and one based on market conditions measured based on Range’s performance relative to a predetermined peer group (“TSR Award” or “TSR-PSUs”).

At grant date, each unit represents the value of one share of our common stock. These units are settled in stock and the amount of the payout is based on (1) the vesting percentage, which can be from zero to 200% based on the performance achieved and (2) the value of our common stock on the date payout is determined by the compensation committee. Dividend equivalents may accrue during the performance period and would be paid in stock at the end of the performance period. The performance period for TSR-PSUs is three years. The performance period for the PG-PSUs and RG-PSUs is based on annual performance targets earned over a three-year period.

Restricted Stock – Equity Awards

In 2020, we granted 4.5 million restricted stock Equity Awards to employees which generally vest over a three-year period compared to 2.8 million in 2019 and 1.8 million in 2018. We recorded compensation expense for these awards of $17.8 million in the year ended December 31, 2020 compared to $22.5 million in 2019 and $24.2 million in 2018. As of December 31, 2020, there was $15.1 million of unrecognized compensation related to Equity Awards expected to be recognized over a weighted average period of 1.6 years. Restricted stock Equity Awards are not issued to employees until such time as they are vested and the employees do not have the option to receive cash.

Restricted Stock – Liability Awards

In 2020, we granted 3.5 million shares of restricted stock Liability Awards as compensation to directors and employees at an average price of $3.18. These grants included 217,000 shares issued to non-employee directors, which vest at the end of one year, and 3.3 million shares to employees with vesting generally over a three-year period. In 2019, we granted 1.2 million shares of restricted stock Liability Awards as compensation to directors and employees at an average price of $10.16. This grant included 183,000 shares issued to non-employee directors, which vested immediately, and 1.0 million shares to employees with vesting generally over a three-year period. In 2018, we granted 891,000 shares of restricted stock Liability Awards as compensation to directors and employees at an average price of $15.30. These grants included 146,000 shares issued to non-employee directors, which vested immediately, and 745,000 shares to employees with vesting generally over a three-year period. We recorded compensation expense for these restricted stock Liability Awards of $10.3 million in the year ended December 31, 2020 compared to $9.3 million in 2019 and $11.7 million in 2018. As of December 31, 2020, there was $4.2 million of unrecognized compensation related to restricted stock Liability Awards expected to be recognized over a weighted average period of 1.4 years. A large portion of these awards are held in our deferred compensation plan, are classified as a liability and are remeasured at fair value each reporting period. This mark-to-market amount is reported as deferred compensation expense in our consolidated statements of operations (see additional discussion below). The proceeds received from the sale of stock held in our deferred compensation plan were $696,000 in 2020 compared to $667,000 in 2019 and $9.7 million in 2018. The following is a summary of the status of our non-vested restricted stock outstanding at December 31, 2020:

	Restricted Stock Equity Awards					Restricted Stock Liability Awards
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019		2,002,239		$	12.32		411,126		$	10.94
Granted		4,462,711			3.42		3,535,093			3.18
Vested		(3,063,652	)		6.93		(2,678,013	)		3.94
Forfeited		(585,438	)		8.03		(81,570	)		3.02
Outstanding at December 31, 2020		2,815,860		$	4.97		1,186,636		$	4.18

Stock-Based Performance Units

Production Growth and Reserve Growth Awards. The PG-PSUs and RG-PSUs vest at the end of the three-year performance period. The performance metrics for each year are set by the compensation committee no later than March 31 of such year. If the performance metric for the applicable period is not met, then that portion is considered forfeited. The following is a summary of our non-vested PG/RG-PSUs award activities at December 31, 2020:

Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019	881,573		$	11.70
Units granted (a)	777,847			2.33
Vested	(101,150	)		15.32
Forfeited (b)	(459,168	)		2.33
Outstanding at December 31, 2020	1,099,102		$	5.92

^(a) Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets.

^(b) For RG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the performance metric is not expected to be met and are considered forfeited. For PG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the payout is estimated at 23% with the remainder considered to be forfeited.

We recorded PG/RG-RSUs compensation expense of $2.7 million in the year ended December 31, 2020 compared to $3.8 million in the year ended December 31, 2019 and $5.4 million in the year ended December 31, 2018. As of December 31, 2020, there was $768,000 of unrecognized compensation related these PSU awards to be recognized over a weighted average period of 1.0 years.

TSR Awards. TSR-PSUs granted are earned, or not earned, based on the comparative performance of Range’s common stock measured against a predetermined group of companies in the peer group over a three-year performance period. The fair value of the TSR-PSUs is estimated on the date of grant using a Monte Carlo simulation model which utilizes multiple input variables that determine the probability of satisfying the market condition stipulated in the award grant and calculates the fair value of the award. The fair value is recognized as stock-based compensation expense over the three-year performance period. Expected volatilities utilized in the model were estimated using a combination of a historical period consistent with the remaining performance period of three years and option implied volatilities. The risk-free interest rate was based on the United States Treasury rate for a term commensurate with the life of the grant. The following assumptions were used to estimate the fair value of the TSR-PSUs granted during the years ended December 31, 2020, 2019 and 2018:

	Year Ended December 31, 2019
	2020			2019			2018
Risk-free interest rate		1.4	%		2.44	%		2.42	%
Expected annual volatility		65	%		46	%		48	%
Grant date fair value per unit	$	3.85		$	11.34		$	18.51

The following is a summary of our non-vested TSR – PSUs award activities:

	Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019		993,452		$	19.00
Granted (a)		610,155			3.85
Vested and issued (b)		(278,184	)		26.12
Forfeited		(75,899	)		26.66
Outstanding at December 31, 2020		1,249,524		$	9.55

^(a) These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

^(b) Includes 278,184 TSR-PSUs awards issued related to 2017 performance where the return on our common stock was in the 60^th percentile for the March 2017 grant and the 80^th percentile for the May 2017 grant. The remaining 2017 awards were considered to be forfeited.

We recorded TSR-PSU compensation expense of $2.4 million in the year ended December 31, 2020 compared to $3.0 million in the year ended December 31, 2019 and $6.3 million in the year ended December 31, 2018. As of December 31, 2020, there was $1.3 million of unrecognized compensation related to these PSU awards to be recognized over a weighted average period of 1.7 years.

401(k) Plan

We maintain a 401(k) benefit plan that allows employees to contribute up to 75% of their salary (subject to Internal Revenue Service limitations) on a pretax basis. We match up to 6% of salary in cash and vesting of those contributions is immediate. In 2020, we contributed $5.3 million to the 401(k) Plan compared to $5.4 million in 2019 and $5.8 million in 2018. Employees have a variety of investment options in the 401(k) benefit plan.

Deferred Compensation Plan

Our deferred compensation plan gives directors, officers and key employees the ability to defer all or a portion of their salaries and bonuses and invest in Range common stock or make other investments at the individual’s discretion. Range provides a partial matching contribution which vests over three years. The assets of the plans are held in a grantor trust, which we refer to as the Rabbi Trust, and are therefore available to satisfy the claims of our creditors in the event of bankruptcy or insolvency. Our stock held in the Rabbi Trust is treated as a liability award as employees are allowed to take withdrawals from the Rabbi Trust either in cash or in Range stock. The liability for the vested portion of the stock held in the Rabbi Trust is reflected in the deferred compensation liability in the accompanying consolidated balance sheets and is adjusted to fair value each reporting period by a charge or credit to deferred compensation plan expense on our consolidated statements of operations. The assets of the Rabbi Trust, other than our common stock, are invested in marketable securities and reported at their market value in other assets in the accompanying consolidated balance sheets. The deferred compensation liability reflects the vested market value of the marketable securities and Range stock held in the Rabbi Trust. Changes in the market value of the marketable securities and changes in the fair value of the deferred compensation plan liability are charged or credited to deferred compensation plan expense each quarter. We recorded mark-to-market loss of $12.5 million in 2020 compared to a gain of $15.5 million in 2019 and a gain of $18.6 million in 2018. The Rabbi Trust held 6.1 million shares (5.0 million of vested shares) of Range stock at December 31, 2020 compared to 3.2 million (2.7 million of vested shares) at December 31, 2019.

Other Post-Retirement Benefits

We have a post retirement benefit plan to assist in providing health care to officers who are active employees (including their spouses) and have met certain age and service requirements. These benefits are not funded in advance and are provided up to age 65 or on the date they become eligible for Medicare, subject to various cost-sharing features. The change in our post-retirement benefit obligation is as follows (in thousands):

Change in Benefit Obligation:	2020			2019
Benefit obligation at beginning of year	$	1,957		$	1,355
Service cost		80			88
Interest cost		50			68
Actuarial (gain) loss		(39	)		532
Benefits paid		(95	)		(86	)
Benefit obligation at end of year	$	1,953		$	1,957
Amounts recognized in the consolidated balance sheet:
Long-term liabilities	$	1,953		$	1,957
Components of Net Periodic Post Retirement Benefit Cost:
Service cost	$	80		$	88
Interest cost		50			68
Amortization of prior service cost		369			369
Net periodic post retirement costs (recognized in general and administrative expense)	$	499		$	525
Other Changes in Benefit Obligations in Other Comprehensive Income (Loss):
Net (gain) loss	$	(39	)	$	532
Prior service cost		—			—
Amortization of prior service cost		(369	)		(369	)
Total recognized in other comprehensive (loss) income	$	(408	)	$	163
Total recognized in net periodic benefit cost and other comprehensive income	$	91		$	688

The following summarizes the assumptions used to determine the benefit obligation at December 31, 2020 and 2019:

	December 31, 2020			December 31, 2019
Weighted average assumptions used to determine benefit obligation:
Discount rate		1.9	%		2.9	%
Assumed weighted average healthcare cost trend rates:
Initial healthcare trend rate		6.5	%		6.5	%
Ultimate trend rate		4.5	%		4.5	%
Year ultimate trend rate reached		2024			2023

The expected future benefit payments under our post-retirement benefit plan for the next ten years is $914,000 for the five year period 2021 through 2025 and $371,000 for the five year period 2026 through 2030. The estimated prior service cost that will be amortized from accumulated other comprehensive loss into our statements of operations in 2021 is $369,000.

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Capital Stock

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Capital Stock

(13) Capital Stock

We have authorized capital stock of 485.0 million shares, which includes 475.0 million shares of common stock and 10.0 million shares of preferred stock. The following is a schedule of changes in the number of common shares outstanding since the beginning of 2019:

	Year Ended December 31,
	2020			2019
Beginning balance		249,630,803			249,510,022
Restricted stock grants		3,390,358			1,186,290
Restricted stock units vested		1,226,473			720,212
Performance stock units issued		279,420			12,283
Performance stock dividends		18,700			464
Treasury shares		(8,197,662	)		(1,798,468	)
Ending balance		246,348,092			249,630,803

Common Stock Dividends

The board of directors declared quarterly dividends of $0.02 per common share for each of the four quarters of 2019 and 2018. In January 2020, we announced that the board had suspended the dividend. The determination of the amount of future dividends, if any, to be declared and paid is at the sole discretion of the board of directors and will depend on our financial condition, earnings, capital requirements, levels of indebtedness, our future business prospects and other matters our board of directors deem relevant. Our bank credit facility and our senior subordinated notes allow for the payment of common dividends, with certain limitations, as described in the indentures governing each of our notes.

Stock Repurchase Program

In October 2019, the board of directors approved a new stock purchase program to acquire up to $100 million of our outstanding stock. The following is a schedule of the change in treasury shares since the beginning of 2019:

	Year Ended December 31,
	2020			2019
Beginning balance		1,808,133			9,665
Rabbi trust shares distributed and/or sold		(2,338	)		(1,532	)
Shares repurchased		8,200,000			1,800,000
Ending balance		10,005,795			1,808,133

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Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

(14) Supplemental Cash Flow Information

	Year Ended December 31,
	2020			2019			2018
	(in thousands)
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$	343		$	—		$	7,521
Interest paid		(168,471	)		(189,443	)		(207,433	)
Non-cash investing and financing activities included:
Asset retirement costs capitalized, net	$	2,610		$	11,193		$	28,826
Decrease in accrued capital expenditures		(23,625	)		(20,104	)		(119,021	)

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Commitments and Contingencies

12 Months Ended

Dec. 31, 2020

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

(15) Commitments and Contingencies

Litigation

We are the subject of, or party to, a number of pending or threatened legal actions and administrative proceedings arising in the ordinary course of our business including, but not limited to, royalty claims, contract claims and environmental claims. While many of these matters involve inherent uncertainty, we believe that the amount of the liability, if any, ultimately incurred with respect to proceedings or claims will not have a material adverse effect on our consolidated financial position as a whole or on our liquidity, capital resources or future annual results of operations.

When deemed necessary, we establish reserves for certain legal proceedings. The establishment of a reserve is based on an estimation process that includes the advice of legal counsel and subjective judgment of management. While management believes these reserves to be adequate, it is reasonably possible we could incur additional losses with respect to those matters in which reserves have been established. We will continue to evaluate our litigation on a quarterly basis and will establish and adjust any litigation reserves as appropriate to reflect our assessment of the then current status of litigation.

We have incurred and will continue to incur capital, operating and remediation expenditures as a result of environmental laws and regulations. As of December 31, 2020 and 2019, liabilities for remediation were not material. We are not aware of any environmental claims existing as of December 31, 2020 that have not been provided for or would otherwise have a material impact on our financial position or results of operations. Environmental liabilities normally involve estimates that are subject to revision until final resolution, settlement or remediation occurs.

Obligations Following Divestitures

Certain contractual obligations were retained by us after our divestiture of our North Louisiana assets. These obligations are primarily related to gathering, processing and transportation agreements including certain minimum volume commitments. For additional information see Note 4, Note 11 and Note 16.

Lease Commitments

The components of our total lease expense for the two years ended December 31, 2020, the majority of which is included in general and administrative expense, are as follows (in thousands):

		Year Ended December 31,
		2020			2019
Operating lease cost	$	27,895		$	15,536
Variable lease expense (1)		33,849			6,916
Short-term lease expense (2)		1,866			2,965
Sublease income		(3,199	)		(3,496	)
Total lease expense	$	60,411		$	21,921
Short-term lease costs (3)	$	15,984		$	29,126

(1)   Variable lease payments that are not dependent on an index or rate are not included in the lease liability or ROU assets.

(2)   Short-term lease expense represents expense related to leases with a contract term of one year or less.

(3)   These short-term lease costs are related to leases with a contract term of one year or less and the majority of which are related to drilling rigs and are capitalized as part of natural gas and oil properties on our consolidated balance sheets and may fluctuate based on the number of drilling rigs being utilized.

Supplemental cash flow information related to our operating leases is included in the table below (in thousands):

			Year Ended December 31,
		2020			2019
Cash paid for amounts included in the measurement of lease liabilities	$	32,030		$	18,700
ROU assets added in exchange for lease obligations	$	27,769		$	24,839

Supplemental balance sheet information related to our operating leases is included in the table below (in thousands):

			Year Ended December 31,
		2020				2019
Operating lease ROU assets	$	63,581			$	62,053
Accrued liabilities – current	$	(24,673		)	$	(27,856	)
Operating lease liabilities – long-term	$	(43,155		)	$	(41,068	)

As part of our ongoing effort to reduce general and administrative expenses due to both the lower commodity price environment and in conjunction with the sale of our North Louisiana assets, we vacated one floor in our Fort Worth headquarters. We recorded an impairment related to this lease of $2.0 million in the year ended December 31, 2020. In addition, in fourth quarter 2019, we announced the closing of our Houston office. We recorded an impairment related to our Houston office lease ROU asset of $2.1 million for the year ended December 31, 2019. These charges are included in impairment of proved property and other assets in our consolidated statements of operations.

Our weighted average remaining lease term and weighted average discount rate for our operating leases are as follows:

	Year Ended December 31,
	2020	2019
Weighted average remaining lease term	4.0 years	4.6 years
Weighted average discount rate	6%	6%

Our lease liabilities with enforceable contract terms that are greater than one year mature as follows (in thousands):

		Operating Leases
2021	$	27,850
2022		20,868
2023		6,866
2024		6,468
2025		6,468
Thereafter		8,795
Total lease payments		77,315
Less effects of discounting		(9,487	)
Total lease liability	$	67,828

Transportation, Gathering and Processing Contracts

We have entered into firm transportation and gathering contracts with various pipeline carriers for the future transportation and gathering of natural gas, NGLs and oil production from our properties in Pennsylvania. Under these contracts, we are obligated to transport, process or gather minimum daily natural gas volumes, or pay for any deficiencies at a specified reservation fee rate. Our production committed to these pipelines is currently expected to exceed the minimum daily volumes provided in the contracts. However, if in the future we fail to deliver the committed volumes, we would recognize a deficiency payment in the period in which the under delivery takes place and the related liability has been incurred. As of December 31, 2020, future minimum transportation, processing and gathering fees under our commitments are as follows (in thousands):

	Transportation, Gathering and Processing Contracts (a)
2021	$	837,792
2022		818,569
2023		782,130
2024		766,474
2025		680,757
Thereafter		4,138,532
	$	8,024,254

^(a) The amounts in this table represent the gross amounts that we are committed to pay; however, we will record in our financial statements our proportionate share of costs based on our working interest which can vary based on volumes produced.

In addition to the amounts included in the above table, we have entered into an additional agreement which is contingent on certain pipeline modifications and/or construction for natural gas volumes of 25,000 mcf per day and is expected to begin in 2022 with a six-year term.

Not included in the table above is our estimate of accrued contractual obligations related to certain obligations retained by us after our divestiture of our North Louisiana assets. These contractual obligations are related to gathering, processing and transportation agreements including certain minimum volume commitments. There are inherent uncertainties surrounding the retained obligation and, as a result, the determination of the accrued obligation required significant judgement and estimation. The actual settlement amount and timing may differ from our estimates. See also Note 4 and Note 11. As of December 31, 2020, the carrying value of this obligation was $484.1 million (discounted) and is included in divestiture contract obligation in our consolidated balance sheet. As of December 31, 2020, our estimated settlement of this retained obligation based on a discounted value is as follows (in thousands):

	Divestiture Contract Obligation
2021	$	92,593
2022		74,942
2023		62,639
2024		54,042
2025		47,704
Thereafter		152,175
	$	484,095

Delivery Commitments

We have various volume delivery commitments that are related to our Marcellus Shale properties. We expect to be able to fulfill our contractual obligations from our own production; however, we may purchase third-party volumes to satisfy our commitments or pay demand fees for commitment shortfalls, should they occur. As of December 31, 2020, our delivery commitments through 2031 were as follows:

Year Ending December 31,	Natural Gas (mmbtu per day)		Ethane and Propane (bbls per day)
2021		476,877	35,000
2022		477,679	35,000
2023		292,423	35,000
2024		211,216	35,000
2025		170,000	35,000
2026		158,301	35,000
2027		100,000	35,000
2028		100,000	35,000
2029		100,000	20,000
2030-2031		—	20,000

In addition to the amounts included in the above table, we have contracted with a pipeline company through 2035 to deliver ethane production volumes from our Marcellus Shale wells. These agreements and related fees, which are contingent upon facility construction and/or modification, are for 3,000 bbls per day starting in 2021 and increasing to 18,000 bbls per day in 2027 and to 25,000 bbls per day in 2029 through 2033 and declining to 10,000 bbls per day for the remainder of the term.    

Other

We also have lease acreage that is generally subject to expiration if initial wells are not drilled within a specified period, generally between three and five years. We do not expect to lose significant lease acreage because of failure to drill due to inadequate capital, equipment or personnel. However, based on our evaluation of prospective economics, we have allowed acreage to expire and will allow additional acreage to expire in the future. To date, our expenditures to comply with environmental or safety regulations have not been a significant component of our cost structure and are not expected to be significant in the future. However, new regulations, enforcement policies, claims for damages or other events could result in significant future costs.

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Exit and Termination Costs

12 Months Ended

Dec. 31, 2020

Restructuring And Related Activities [Abstract]

Exit and Termination Costs

(16) Exit and Termination Costs

Exit Costs

In August 2020, we sold our North Louisiana assets and retained certain gathering, transportation and processing obligations which extend into 2030. These are contracts where we will not realize any future benefit. The estimated obligations are included in current and long-term divestiture contract obligation in our consolidated balance sheet. The present value of our estimated obligations was recorded as an exit cost which totaled $479.8 million in third quarter 2020. Also associated with this sale, we agreed to pay a midstream company $28.5 million to reduce our financial obligation related to the minimum volume commitments associated with this asset which was also recorded as an exit cost in third quarter 2020.

In second quarter 2020, we negotiated capacity releases on certain transportation pipelines in Pennsylvania effective May 31, 2020 and extending through the remainder of the contract. As a result of these releases, we recorded exit costs of $10.4 million which represents the discounted present value of our remaining obligations to the third party.

Termination Costs

In third quarter 2020, we completed the sale of our North Louisiana assets and we recorded $2.5 million of severance costs and stock-based compensation expense. In third quarter 2020, we also announced an additional reduction in our work force as we continue to focus on lowering administrative expenses and recorded $3.7 million of severance costs and stock-based compensation expense related to this reduction in force. In first quarter 2020, we completed the sale of our shallow legacy assets in Northwest Pennsylvania and we recorded $1.4 million of severance costs which is primarily related to the sale of these assets. In 2019, we sold various non-core assets in Pennsylvania and accrued $819,000 of severance costs related to this sale. In second quarter 2019, we announced another reduction in our work force and recorded $2.2 million of severance costs related to this work force reduction. The following summarizes our exit and termination costs for the three years ended December 31, 2020, 2019 and 2018 (in thousands):

	Year Ended December 31,
	2020		2019			2018
Severance costs	$	5,909	$	7,535	$	(356	)
Transportation contract capacity releases (including accretion of    discount)		10,900		—		—
Divestiture contract obligation (including accretion of discount)		499,935		—		—
One-time minimum volume commitment contract payment		28,500		—		—
Stock-based compensation and other		2,165		1,971		(17	)
	$	547,409	$	9,506	$	(373	)

The following details the accrued exit and termination cost liability activity for the years ended December 31, 2020 and 2019 (in thousands):

	Exit Costs			Termination Costs
Balance at December 31, 2018	$	—		$	—
Accrued severance costs		—			7,535
Payments		—			(2,843	)
Balance at December 31, 2019		—			4,692
Accrued severance costs		—			5,909
Accrued contract obligations		490,114			—
Accretion of discount		20,720			—
Payments		(17,291	)		(9,147	)
Balance at December 31, 2020	$	493,543		$	1,454

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Suspended Exploratory Well Costs

12 Months Ended

Dec. 31, 2020

Capitalized Exploratory Well Costs [Abstract]

Suspended Exploratory Well Costs

(17) Suspended Exploratory Well Costs

We capitalize exploratory well costs until a determination is made that the well has either found proved reserves or that it is impaired. Capitalized exploratory well costs are presented in natural gas and oil properties in the accompanying consolidated balance sheets. If an exploratory well is determined to be impaired, the well costs are charged to exploration expense in the accompanying consolidated statements of operations. The following table reflects the changes in capitalized exploratory well costs for the year ended December 31, 2020. We had no capitalized exploratory well costs for the years ended December 31, 2019 and 2018 (in thousands):

		2020
Balance at beginning of period	$	—
Additions to capitalized exploratory well costs pending the determination of proved reserves		7,709
Reclassifications to wells, facilities and equipment based on determination of proved reserves		—
Capitalized exploratory well costs, charged to expense		—
Balance at end of period	$	7,709
Less exploratory well costs that have been capitalized for a period of one year or less	$	7,709
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$	—

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Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited)

12 Months Ended

Dec. 31, 2020

Accounting Changes And Error Corrections [Abstract]

Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited)

 (18) Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited)

In connection with our year-end financial close process and related preparation of our 2020 Annual Report on Form 10-K, a misstatement of deferred income taxes was identified in our previously filed 2020 unaudited interim financial statements. We assessed the materiality of this error in accordance with the U.S. Securities and Exchange Commission Staff Accounting Bulletin No. 99, Materiality and have concluded that our interim financial information as filed in each of our 2020 Quarterly Reports on Form 10-Q should be restated. This misstatement is the result of an error in management’s conclusions regarding the realizability of deferred tax assets resulting from changes to the tax law under the Coronavirus Aid, Relief and Economic Security Act (also known as the CARES Act) and has resulted in a change to deferred tax expense (benefit) which has been corrected in the tables below. This correction also includes previously identified immaterial errors in those periods, which also is related to the accounting for income taxes. There was no impact on our net cash flows from operating activities, investing activities or financing activities. As of December 31, 2020, we have $3.2 billion of federal net operating loss carryforwards.

The effects of this error on our previously reported 2020 quarterly statements of operations on a quarter-to-date basis are as follows (in thousands, except per share data):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total revenues and other     income	$	693,920		$	376,546		$	299,345		$	—		$	—		$	—		$	693,920		$	376,546		$	299,345
Total costs and expenses		498,727			566,395			1,084,644			—			—			—			498,727			566,395			1,084,644
Income (loss) before     income taxes		195,193			(189,849	)		(785,299	)		—			—			—			195,193			(189,849	)		(785,299	)
Income tax (benefit) expense
Current		(363	)		(3	)		—			—			—			—			(363	)		(3	)		—
Deferred		50,581			(43,277	)		(105,251	)		(21,220	)		21,014			68,742			29,361			(22,263	)		(36,509	)
		50,218			(43,280)			(105,251	)		(21,220	)		21,014			68,742			28,998			(22,266	)		(36,509	)
Net income (loss)	$	144,975		$	(146,569)		$	(680,048	)	$	21,220		$	(21,014	)	$	(68,742	)	$	166,195		$	(167,583	)	$	(748,790	)
Net income (loss) per     common share:
Basic	$	0.58		$	(0.61	)	$	(2.83	)	$	0.09		$	(0.09	)	$	(0.29	)	$	0.67		$	(0.70	)	$	(3.12	)
Diluted	$	0.58		$	(0.61	)	$	(2.83	)	$	0.08		$	(0.09	)	$	(0.29	)	$	0.66		$	(0.70	)	$	(3.12	)
Comprehensive     income (loss)	$	145,048		$	(146,498	)	$	(679,978	)	$	21,220		$	(21,014	)	$	(68,742	)	$	166,268		$	(167,512	)	$	(748,720	)

The effects of this error on our previously reported 2020 quarterly statements of operations on a year-to-date basis are as follows (in thousands, except per share data):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total revenues and other      income	$	693,920		$	1,070,466		$	1,369,811		$	—		$	—		$	—		$	693,920		$	1,070,466		$	1,369,811
Total costs and expenses		498,727			1,065,122			2,149,766			—			—			—			498,727			1,065,122			2,149,766
Income (loss) before     income taxes		195,193			5,344			(779,955	)		—			—			—			195,193			5,344			(779,955	)
Income tax (benefit) expense
Current		(363	)		(366	)		(366	)		—			—			—			(363	)		(366	)		(366	)
Deferred		50,581			7,304			(97,947	)		(21,220	)		(206	)		68,536			29,361			7,098			(29,411	)
		50,218			6,938			(98,313	)		(21,220	)		(206	)		68,536			28,998			6,732			(29,777	)
Net income (loss)	$	144,975		$	(1,594	)	$	(681,642	)	$	21,220		$	206		$	(68,536	)	$	166,195		$	(1,388	)	$	(750,178	)
Net income (loss) per     common share:
Basic	$	0.58		$	(0.01	)	$	(2.82	)	$	0.09		$	—		$	(0.28	)	$	0.67		$	(0.01	)	$	(3.10	)
Diluted	$	0.58		$	(0.01	)	$	(2.82	)	$	0.08		$	—		$	(0.28	)	$	0.66		$	(0.01	)	$	(3.10	)
Comprehensive     income (loss)	$	145,048		$	(1,450	)	$	(681,428	)	$	21,220		$	206		$	(68,536	)	$	166,268		$	(1,244	)	$	(749,964	)

The effects of this error on our previously reported 2020 quarterly balance sheets are as follows (in thousands):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total current assets	$	467,117		$	331,839		$	209,147		$	—		$	—		$	—		$	467,117		$	331,839		$	209,147
Total non-current    assets	$	6,122,521		$	6,120,372		$	5,803,751		$	—		$	—		$	—		$	6,122,521		$	6,120,372		$	5,803,751
Total current liabilities	$	490,125		$	530,253		$	630,120		$	—		$	—		$	—		$	490,125		$	530,253		$	630,120
Total non-current    liabilities	$	3,624,925		$	3,586,142		$	3,720,274		$	(21,220)		$	(206)		$	68,536		$	3,603,705		$	3,585,936		$	3,788,810
Deferred tax liabilities	$	210,803		$	167,548		$	62,319		$	(21,220	)	$	(206	)	$	68,536		$	189,583		$	167,342		$	130,855
Total liabilities	$	4,115,050		$	4,116,395		$	4,350,394		$	(21,220	)	$	(206	)	$	68,536		$	4,093,830		$	4,116,189		$	4,418,930
Retained deficit	$	(3,161,859	)	$	(3,308,502	)	$	(3,988,550	)	$	21,220		$	206		$	(68,536	)	$	(3,140,639	)	$	(3,308,296	)	$	(4,057,086	)
Total stockholders’    equity	$	2,474,588		$	2,335,816		$	1,662,504		$	21,220		$	206		$	(68,536	)	$	2,495,808		$	2,336,022		$	1,593,968
Total liabilities and    stockholders’ equity	$	6,589,638		$	6,452,211		$	6,012,898		$	—		$	—		$	—		$	6,589,638		$	6,452,211		$	6,012,898

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited)

12 Months Ended

Dec. 31, 2020

Extractive Industries [Abstract]

Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited)

(19) Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited)

Our natural gas and oil producing activities are conducted onshore within the continental United States and all of our proved reserves are located within the United States.

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization ^(a)

	December 31,
	2020			2019			2018
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	8,891,348		$	9,345,557		$	10,974,929
Unproved properties		859,766			868,180			2,110,277
Total		9,751,114			10,213,737			13,085,206
Accumulated depreciation, depletion and amortization		(4,064,305	)		(4,172,702	)		(4,062,021	)
Net capitalized costs	$	5,686,809		$	6,041,035		$	9,023,185

^{(a) Includes capitalized asset retirement costs and the associated accumulated amortization.}

Costs Incurred for Property Acquisition, Exploration and Development ^(a)

	December 31,
	2020		2019		2018
	(in thousands)
Acquisitions
Acreage purchases	$	26,166	$	57,324	$	62,390
Oil and gas properties		—		—		1,683
Development		369,093		666,984		834,552
Exploration:
Drilling		7,709		—		1,380
Expense		31,376		35,117		32,196
Stock-based compensation expense		1,279		1,566		1,921
Gas gathering facilities:
Development		3,694		3,583		10,218
Subtotal		439,317		764,574		944,340
Asset retirement obligations		2,610		11,193		28,826
Total costs incurred	$	441,927	$	775,767	$	973,166

^{(a) Includes cost incurred whether capitalized or expensed.}

Reserve Audit

All reserve information in this report is based on estimates prepared by our petroleum engineering staff. At year-end 2020, Netherland, Sewell & Associates, Inc., an independent petroleum consultant, conducted an audit of our 2020 reserves in Appalachia. These engineers were selected for their geographic expertise and their historical experience in engineering certain properties. At December 31, 2020, our consultant audited approximately 97% of our proved reserves. A copy of the summary reserve report prepared by our independent petroleum consultant is included as an exhibit to this Annual Report on Form 10-K. The technical professional at our independent petroleum consulting firm responsible for reviewing the reserve estimates presented herein meets the requirements regarding qualifications, independence, objectivity and confidentiality set forth in the Standards Pertaining to the Estimating and Auditing of Oil and Gas Reserves Information promulgated by the Society of Petroleum Engineers. We maintain an internal staff of petroleum engineers and geoscience professionals who work closely with our independent petroleum consultant to ensure the integrity, accuracy and timeliness of data furnished during the reserves audit process. Throughout the year, our technical team meets periodically with representatives of our independent petroleum consultant to review properties and discuss methods and assumptions. While we have no formal committee specifically designated to review reserves reporting and the reserves estimation process, our senior management reviews and approves any significant changes to our proved reserves. We provide historical information to our consultant for our largest producing properties such as ownership interest, natural gas, NGLs and oil production, well test data, commodity prices and operating and development costs. The consultants perform an independent analysis and differences are reviewed with our Senior Vice President of Reservoir Engineering and Economics. In some cases, additional meetings are held to review identified reserve differences. The reserve auditor estimates of proved reserves and the pretax present value of such reserves discounted at 10% did not differ from our estimates by more than 10% in the aggregate. However, when compared lease-by-lease, field-by-field or area-by-area, some of our estimates may be greater and some may be less than the estimates of our reserve auditor. When such differences do not exceed 10% in the aggregate, our reserve auditor is satisfied that the proved reserves and pretax present value of such reserves discounted at 10% are reasonable and will issue an unqualified opinion. Remaining differences are not resolved due to the limited cost benefit of continuing such analysis.

Historical variances between our reserve estimates and the aggregate estimates of our independent petroleum consultants have been less than 5%. All of our reserve estimates are reviewed and approved by our Senior Vice President of Reservoir Engineering and Economics, who reports directly to our President and Chief Executive Officer. Mr. Alan Farquharson, our Senior Vice President of Reservoir Engineering and Economics, holds a Bachelor of Science degree in Electrical Engineering from the Pennsylvania State University. Before joining Range, he held various technical and managerial positions with Amoco, Hunt Oil and Union Pacific Resources and has more than forty years of engineering experience in the oil and gas industry. During the year, our reserves group may also perform separate, detailed technical reviews of reserve estimates for significant acquisitions or for properties with problematic indicators such as excessively long lives, sudden changes in performance or changes in economic or operating conditions.

Estimated Quantities of Proved Oil and Gas Reserves

Reserves of natural gas, NGLs, crude oil and condensate are estimated by our petroleum engineering staff and are adjusted to reflect contractual arrangements and royalty rates in effect at the end of each year. Many assumptions and judgmental decisions are required to estimate reserves. Reported quantities are subject to future revisions, some of which may be substantial, as additional information becomes available from reservoir performance, new geological and geophysical data, additional drilling, technological advancements, price changes, production taxes and other economic factors.

The SEC defines proved reserves as those volumes of natural gas, NGLs, crude oil and condensate that geological and engineering data demonstrate with reasonable certainty are recoverable in future years from known reservoirs under existing economic and operating conditions. Proved developed reserves are those proved reserves which can be expected to be recovered from existing wells with existing equipment and operating methods. Proved undeveloped reserves are volumes expected to be recovered from new wells on undrilled acreage or from existing wells where a relatively major expenditure is required for recompletion. Reserves on undrilled acreage shall be limited to those drilling units offsetting productive units that are reasonably certain of production when drilled. Proved reserves for other undrilled units can be claimed only where it can be demonstrated with certainty that there is continuity of production from the existing productive formation. Proved undeveloped reserves can only be assigned to acreage for which improved recovery technology is contemplated when such techniques have been proven effective by actual tests in the area and in the same reservoir. Undrilled locations can be classified as having undeveloped reserves only if a development plan has been adopted indicating each location is scheduled to be drilled within five years from the date it was booked as proved reserves, unless specific circumstances justify a longer time.

The reported value of proved reserves is not necessarily indicative of either fair market value or present value of future net cash flows because prices, costs and governmental policies do not remain static, appropriate discount rates may vary, and extensive judgment is required to estimate the timing of production. Other logical assumptions would likely have resulted in significantly different amounts.

The average realized prices used at December 31, 2020 to estimate reserve information were $30.13 per barrel of oil, $16.14 per barrel of NGLs and $1.68 per mcf for gas using a benchmark (NYMEX) of $39.77 per barrel and $1.98 per MMbtu. The average realized prices used at December 31, 2019 to estimate reserve information were $49.24 per barrel of oil, $17.32 per barrel of NGLs and $2.38 per mcf for gas using a benchmark (NYMEX) of $55.73 per barrel and $2.58 per Mmbtu. The average realized prices used at December 31, 2018 to estimate reserve information were $59.96 per barrel of oil, $25.22 per barrel of NGLs and $2.98 per mcf for gas using a benchmark (NYMEX) of $65.55 per barrel and $3.10 per Mmbtu.

	Natural Gas			NGLs			Crude Oil and Condensate			Natural Gas Equivalents
	(Mmcf)			(Mbbls)			(Mbbls)			(Mmcfe) (a)
Proved developed and undeveloped reserves:
Balance, December 31, 2017		10,263,649			763,264			69,854			15,262,361
Revisions		178,595			84,993			7,197			731,735
Extensions, discoveries and additions		2,269,427			128,436			17,309			3,143,898
Property sales		(135,884	)		(16,774	)		(4,276	)		(262,180	)
Production		(548,085	)		(38,325	)		(4,228	)		(803,408	)
Balance, December 31, 2018		12,027,702			921,594			85,856			18,072,406
Revisions		33,122			57,311			(12,320	)		303,068
Extensions, discoveries and additions		959,901			26,505			7,057			1,161,274
Property sales		(327,634	)		(28,324	)		(2,371	)		(511,811	)
Production		(578,114	)		(38,850	)		(3,690	)		(833,354	)
Balance, December 31, 2019		12,114,977			938,236			74,532			18,191,583
Revisions		(789,992	)		42,741			(12,444	)		(608,211	)
Extensions, discoveries and additions		1,007,415			38,298			4,512			1,264,282
Property sales		(609,311	)		(30,317	)		(6,145	)		(828,084	)
Production		(574,529	)		(37,492	)		(2,829	)		(816,456	)
Balance, December 31, 2020		11,148,560			951,466			57,626			17,203,114
Proved developed reserves:
December 31, 2018		6,451,012			512,318			38,658			9,756,870
December 31, 2019		6,486,211			535,007			34,369			9,902,468
December 31, 2020		6,350,057			550,771			22,976			9,792,540
Proved undeveloped reserves:
December 31, 2018		5,576,690			409,276			47,198			8,315,536
December 31, 2019		5,628,766			403,229			40,163			8,289,115
December 31, 2020		4,798,503			400,695			34,650			7,410,574

^(a)  Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

During 2020, we added approximately 1.3 Tcfe of proved reserves from drilling activities and evaluation of proved areas in the Marcellus Shale. Approximately 80% of the 2020 reserve additions are attributable to natural gas.  Revisions of previous estimates of a negative 608.2 Bcfe include positive performance revisions of 420.9 Bcfe which were more than offset by 961.1 Bcfe reclassified to unproved for previously planned wells not to be drilled within the original five-year development horizon and negative pricing revisions of 67.9 Bcfe.

During 2019, we added approximately 1.2 Tcfe of proved reserves from drilling activities and evaluation of proved areas in the Marcellus Shale. Approximately 83% of the 2019 reserve additions are attributable to natural gas. Included in 2019 proved reserves is a total of 475.0 Mmbbls of ethane reserves (2,102 Bcfe) in the Marcellus Shale. Revisions of previous estimates of 303 Bcfe include positive performance revisions of 922.2 Bcfe which were partially offset by 601.3 Bcfe reclassified to unproved and negative pricing revisions of 17.8 Bcfe.

During 2018, we added approximately 3.1 Tcfe of proved reserves from drilling activities and evaluation of proved areas primarily in the Marcellus Shale. Approximately 72% of the 2019 reserve additions are attributable to natural gas. Included in 2018 proved reserves is a total of 468.9 Mmbbls of ethane reserves (2,075 Bcfe) in the Marcellus Shale. Revisions of previous estimates of 732 Bcfe include positive pricing and performance revisions of 957 Bcfe and unproved recoveries of 154 Bcfe which were partially offset by 379 Bcfe reclassified to unproved for previously planned wells not to be drilled within the original five-year development horizon.

The following details the changes in proved undeveloped reserves for 2020 (Mmcfe):

Beginning proved undeveloped reserves at December 31, 2019	8,289,115
Undeveloped reserves transferred to developed	(1,258,551	)
Revisions (a)	(675,150	)
Sales	(175,274	)
Extension and discoveries	1,230,434
Ending proved undeveloped reserves at December 31, 2020	7,410,574

^(a) Includes 961 Bcfe of proved undeveloped reserves removed and deferred due to the five-year rule which can be included in our future proved reserves as these locations are added back to our five-year development plan.

During 2020, we spent approximately $284.9 million in development costs related to proved undeveloped reserves that were transferred to developed reserves. Estimated future development costs of proved undeveloped reserves are projected to be approximately $2.4 billion over the next five years. As of December 31, 2020, we have 62 Bcfe that have been reported for more than five years from their original date of booking, all of which are in the process of being completed and are expected to turn to sales in 2021. All of our recorded proved undeveloped drilling locations are scheduled to be drilled within five years of initial disclosure. All proved undeveloped drilling locations are scheduled to be drilled prior to the end of 2025.

Standardized Measure of Discounted Future Net Cash Flows Relating to Proved Oil and Gas Reserves (Unaudited)

The following summarizes the policies we used in the preparation of the accompanying natural gas, NGLs, crude oil and condensate reserve disclosures, standardized measures of discounted future net cash flows from proved natural gas, NGLs and oil reserves and the reconciliations of standardized measures from year to year. The information disclosed is an attempt to present the information in a manner comparable with industry peers.

The information is based on estimates of proved reserves attributable to our interest in natural gas and oil properties as of December 31 of the years presented. These estimates were prepared by our petroleum engineering staff. Proved reserves are estimated quantities of natural gas, NGLs, crude oil and condensate, which geological and engineering data demonstrate with reasonable certainty to be recoverable in future years from known reservoirs under existing economic and operating conditions.

The standardized measure of discounted future net cash flows from production of proved reserves was developed as follows:

1. Estimates are made of quantities of proved reserves and future amounts expected to be produced based on current year-end economic conditions.

2. For the years ended 2020, 2019 and 2018, estimated future cash inflows are calculated by applying a twelve-month average price of natural gas, NGLs and oil relating to our proved reserves to the quantities of those reserves produced in each future year.

3. Future cash flows are reduced by estimated production costs, administrative costs, costs to develop and produce the proved reserves and abandonment costs, all based on current year-end economic conditions. Future income tax expenses are based on current year-end statutory tax rates giving effect to the remaining tax basis in the natural gas, NGLs and oil properties, other deductions, credits and allowances relating to our proved natural gas and oil reserves.

4. The resulting future net cash flows are discounted to present value by applying a discount rate of 10%.

The standardized measure of discounted future net cash flows does not purport, nor should it be interpreted, to present the fair value of our natural gas, NGLs and oil reserves. An estimate of fair value would also take into account, among other things, the recovery of reserves not presently classified as proved, anticipated future changes in prices and costs and a discount factor more representative of the time value of money and the risks inherent in reserve estimates.

The standardized measure of discounted future net cash flows relating to proved natural gas, NGLs, crude oil and condensate reserves is as follows and excludes cash flows associated with derivatives outstanding at each of the respective reporting dates. Future cash inflows are net of third-party transportation, gathering and compression expense.

	As of December 31,
	2020			2019
	(in thousands)
Future cash inflows	$	35,820,758		$	48,718,733
Future costs:
Production		(23,281,268	)		(23,320,477	)
Development (a)		(2,744,539	)		(3,219,349	)
Future net cash flows before income taxes		9,794,951			22,178,907
Future income tax expense		(1,240,011	)		(4,179,297	)
Total future net cash flows before 10% discount		8,554,940			17,999,610
10% annual discount		(5,708,618	)		(11,371,037	)
Standardized measure of discounted future net cash flows	$	2,846,322		$	6,628,573

^(a) 2020 includes $313.1 million of undiscounted future asset retirement costs estimated as of December 31, 2020, using current estimates of future abandonment costs.

The following table summarizes changes in the standardized measure of discounted future net cash flows.

	December 31,
	2020			2019			2018
	(in thousands)
Revisions of previous estimates:
Changes in prices and production costs	$	(4,868,371	)	$	(6,560,107	)	$	2,959,488
Revisions in quantities		(345,073	)		(12,741	)		667,763
Changes in future development and abandonment costs		107,899			104,585			(686,632	)
Net change in income taxes		797,816			1,125,639			(1,075,867	)
Accretion of discount		756,083			1,317,349			814,725
Additions to proved reserves from extensions, discoveries and improved recovery		280,441			552,710			2,543,296
Natural gas, NGLs and oil sales, net of production costs		(402,450	)		(881,883	)		(1,547,580	)
Actual development costs incurred during the period		384,530			676,520			851,188
Sales of reserves in place		(394,125	)		(688,937	)		(226,953	)
Timing and other		(99,001	)		(120,156	)		(349,048	)
Net change for the year		(3,782,251	)		(4,487,021	)		3,950,380
Beginning of year		6,628,573			11,115,594			7,165,214
End of year	$	2,846,322		$	6,628,573		$	11,115,594

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Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2020

Accounting Policies [Abstract]

Basis of Presentation and Principles of Consolidation

Basis of Presentation and Principles of Consolidation

The accompanying consolidated financial statements, including the notes, have been prepared in accordance with U.S. GAAP and include the accounts of all of our subsidiaries. All material intercompany balances and transactions have been eliminated. Certain reclassifications have been made to prior period amounts to conform to the current period’s presentation.

Correction of Error in Previously Reported 2020 Interim Financial Statements

Correction of Error in Previously Reported 2020 Interim Financial Statements

In connection with our year-end financial close process and related preparation of our 2020 Annual Report on Form 10-K, a misstatement of deferred income taxes was identified in our previously filed 2020 unaudited interim financial statements. This matter is the result of an error in management’s conclusion regarding the realizability of deferred tax assets resulting from changes to the tax law under the Coronavirus Aid, Relief and Economic Security Act (also known as the CARES Act) and has resulted in a change to deferred tax expense (benefit). For further information, see Note 18.

Use of Estimates

Use of Estimates

The preparation of financial statements in accordance with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities as of the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from these estimates and changes in these estimates are recorded when known.

Estimated quantities of natural gas, NGLs, crude oil and condensate reserves is a significant estimate that requires judgment. All of the reserve data included in this Form 10-K are estimates. Reservoir engineering is a subjective process of estimating underground accumulations of natural gas, NGLs, crude oil and condensate. There are numerous uncertainties inherent in estimating quantities of proved natural gas, NGLs, crude oil and condensate reserves. The accuracy of any reserves estimate is a function of the quality of available data and of engineering and geological interpretation and judgment. As a result, reserves estimates may be different from the quantities of natural gas, NGLs and crude oil and condensate that are ultimately recovered. See Note 19 for further detail.

Business Segment Information

Business Segment Information

We have evaluated how we are organized and managed and have identified only one operating segment, which is the exploration and production of natural gas, NGLs, crude oil and condensate in the United States. We consider our gathering, processing and marketing functions as integral to our natural gas, crude oil and condensate producing activities.

We have a single company-wide management team that administers all properties as a whole rather than by discrete operating segments. We track only basic operational data by area. We do not maintain complete separate financial statement information by area. We measure financial performance as a single enterprise and not on a geographical or area-by-area basis. All of our operating revenues, income from operations and assets are generated in the United States.

Revenue Recognition, Accounts Receivable and Gas Imbalances

Revenue Recognition, Accounts Receivable and Gas Imbalances

Natural gas, NGLs and oil sales revenues are recognized when control of the product is transferred to the customer and collectability is reasonably assured. See below for a more detailed summary of our product types.

Natural Gas and NGLs Sales

Under our gas processing contracts, we deliver natural gas to a midstream processing entity at the wellhead or the inlet of the

midstream processing entity’s system. The midstream processing entity processes the natural gas and remits proceeds to us for the resulting sales of NGLs and residue gas. In these scenarios, we evaluate whether we are the principal or the agent in the transaction. For those contracts that we have concluded that we are the principal, the ultimate third party is our customer and we recognize revenue on a gross basis, with gathering, compression, processing and transportation fees presented as an expense. Alternatively, for those contracts that we have concluded that we are the agent, the midstream processing entity is our customer and we recognize revenue based on the net amount of the proceeds received from the midstream processing entity.

In certain natural gas processing agreements, we may elect to take our residue gas and/or NGLs in kind at the tailgate of the midstream entity’s processing plant and subsequently market the product on our own. Through the marketing process, we deliver product to the ultimate third-party purchaser at a contractually agreed-upon delivery point and receive a specified index price from the purchaser. In this scenario, we recognize revenue when control transfers to the purchaser at the delivery point based on the index price received from the purchaser. The gathering, processing and compression fees attributable to the gas processing contract, as well as any transportation fees incurred to deliver the product to the purchaser are presented as transportation, gathering, processing and compression expense.

Oil Sales

Our oil sales contracts are generally structured in one of the following ways:

• We sell oil production at the wellhead and collect an agreed-upon index price, net of transportation incurred by the purchaser (that is, a netback arrangement). In this scenario, we recognize revenue when control transfers to the purchaser at the wellhead at the net price received.

• We deliver oil to the purchaser at a contractually agreed-upon delivery point at which the purchaser takes custody, title, and risk of loss of the product. Under this arrangement, we pay a third party to transport the product and receive a specified index price from the purchaser with no deduction. In this scenario, we recognize revenue when control transfers to the purchaser at the delivery point based on the price received from the purchaser. The third-party costs are recorded as transportation, gathering, processing and compression expense.

Brokered Natural Gas, Marketing and Other

We realize brokered margins as a result of buying natural gas or NGLs utilizing separate purchase transactions, generally with separate counterparties, and subsequently selling that natural gas or NGLs under our existing contracts to fill our contract commitments or use existing infrastructure contracts to economically fulfill available capacity. In these arrangements, we take control of the natural gas purchased prior to delivery of that gas under our existing gas contracts with a separate counterparty. Revenues and expenses related to brokering natural gas are reported gross as part of revenues and expenses in accordance with applicable accounting standards. Proceeds generated from the sale of excess firm transportation to third parties is also included here when we are determined to no longer be the primary obligor of such arrangement. Our net brokered margin was a loss of $14.2 million in 2020 compared to a loss of $14.2 million in 2019 and a loss of $16.3 million in 2018.

The recognition of gains or losses on derivative instruments is not considered revenue from contracts with customers. We may use financial or physical contracts accounted for as derivatives as economic hedges to manage price risk associated with normal sales or in limited cases may use them for contracts we intend to physically settle but that do not meet all of the criteria to be treated as normal sales.

Accounts Receivable

Our accounts receivable consist mainly of receivables from oil and gas purchasers and joint interest owners on properties we operate. Although receivables are concentrated in the oil and gas industry, we do not view this as an unusual credit risk. However, this concentration has the potential to impact our overall exposure to credit risk in that our customers may be similarly affected by changes in economic and financial conditions, commodity prices or other conditions. Each reporting period, we assess the recoverability of material receivables using historical data, current market conditions and reasonable and supported forecasts of future economic conditions to determine their expected collectability. The loss given default method is used when, based on management’s judgement, an allowance for expected credit losses is accrued on material receivables to reflect the net amount to be collected. In certain instances, we require purchasers to post stand-by letters of credit. For receivables from joint interest owners, we may have the ability to withhold future revenue disbursements to recover any non-payment of joint interest billings. We regularly review collectability and establish or adjust our allowance as necessary. We have allowances for doubtful accounts relating to exploration and production receivables of $3.0 million at December 31, 2020 compared to $8.8 million at December 31, 2019. For our North Louisiana assets, there were associated joint interest accounts receivable balances that had previously been determined to be uncollectible. As a result of the sale of those assets, such receivables were written off. We recorded bad debt expense of $400,000 in the year ended December 31, 2020 compared to $4.3 million in the year ended December 31, 2019 and income of $1.0 million in the year ended December 31, 2018.

Cash and Cash Equivalents

Cash and Cash Equivalents

Cash and cash equivalents include cash on hand and on deposit and investments in highly liquid debt instruments with maturities of three months or less. Outstanding checks in excess of funds on deposit are included in accounts payable on the consolidated balance sheets and the change in such overdrafts is classified as a financing activity on the consolidated statements of cash flows.

Marketable Securities

Marketable Securities

Investments in unaffiliated equity securities held in our deferred compensation plans qualify as trading securities and are recorded at fair value. Investments held in the deferred compensation plans consist of various publicly-traded mutual funds. These funds include equity securities and money market instruments and are reported in other assets in the accompanying consolidated balance sheets.

Natural Gas and Oil Properties

Natural Gas and Oil Properties

Property Acquisition Costs. We use the successful efforts method of accounting for natural gas and oil producing activities. Costs to drill exploratory wells that do not find proved reserves, geological and geophysical costs, delay rentals and costs of carrying and retaining unproved properties are expensed. Costs incurred for exploratory wells that find reserves that cannot yet be classified as proved are capitalized if (a) the well has found a sufficient quantity of reserves to justify its completion as a producing well and (b) we are making sufficient progress assessing the reserves and the economic and operating viability of the project.

Depreciation, Depletion and Amortization. Depreciation, depletion and amortization of proved properties, including other property and equipment such as gathering lines related to natural gas and oil producing activities, is provided on the units of production method. Historically, we have adjusted our depletion rates in the fourth quarter of each year based on the year-end reserve report and at other times during the year when circumstances indicate there has been a significant change in reserves or costs.

Impairments. Our proved natural gas and oil properties are reviewed for impairment annually and periodically as events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. These assets are reviewed for potential impairment at the lowest level for which there are identifiable cash flows that are largely independent of other groups of assets which is the level at which depletion is calculated. The review is done by determining if the historical cost of proved properties less the applicable accumulated depreciation, depletion and amortization is less than the estimated expected undiscounted future net cash flows. The expected future net cash flows are estimated based on our plans to produce and develop reserves. Expected future net cash inflow from the sale of produced reserves is calculated based on estimated future prices and estimated operating and development costs. We estimate prices based upon market-related information including published futures prices. The estimated future level of production, which is based on proved and risk adjusted probable and possible reserves, as appropriate, has assumptions surrounding the future levels of prices and costs, field decline rates, market demand and supply and the economic and regulatory climate. In certain circumstances, we also consider potential sales of properties to third parties in our estimates of cash flows. When the carrying value exceeds the sum of undiscounted future net cash flows, an impairment loss is recognized for the difference between the estimated fair market value as determined by discounted future net cash flows using a discount rate similar to that used by market participants, or comparable market value if available and the carrying value of the asset. A significant amount of judgment is involved in performing these evaluations since the results are based on estimated future events. Such events include a projection of future natural gas and oil prices, an estimate of the ultimate amount of recoverable natural gas and oil reserves that will be produced from an asset group, the timing of future production, future production costs, future abandonment costs and future inflation. We cannot predict whether impairment charges may be required in the future. If natural gas, NGLs and oil prices decrease or drilling efforts are unsuccessful, we may be required to record additional impairments. For additional information regarding proved property impairments, see Note 11.

We evaluate our unproved property investment periodically for impairment. The majority of these costs generally relate to the acquisition of leasehold costs. The costs are capitalized and evaluated (at least quarterly) as to recoverability based on changes brought about by economic factors and potential shifts in business strategy employed by management which could impact the number of drilling locations we intend to drill. Impairment of a significant portion of our unproved properties is assessed and amortized on an aggregate basis based on our average holding period, expected forfeiture rate and anticipated drilling success. Information such as reservoir performance or future plans to develop acreage is also considered. Impairment of individually significant unproved property is assessed on a property-by-property basis considering a combination of time, geologic and engineering factors. In certain circumstances, our future plans to develop acreage may accelerate our impairment. Unproved properties had a net book value of $859.8 million as of December 31, 2020 compared to $868.2 million in 2019. We have recorded abandonment and impairment expense related to unproved properties of $19.3 million in the year ended December 31, 2020 compared to $1.2 billion in 2019 and $515.0 million in 2018. In 2019, an impairment of $1.2 billion was recorded associated with our North Louisiana unproved property values allocated to previously acquired probable and possible reserves that we no longer had to intent to drill based on a shift in capital allocation which materially impacted our drilling inventory.  

Dispositions. Proceeds from the disposal of natural gas and oil producing properties that are part of an amortization base are credited to the net book value of the amortization group with no immediate effect on income. However, gain or loss is recognized if the disposition is significant enough to materially impact the depletion rate of the remaining properties in the amortization base. Dispositions are accounted for as a sale of assets. For additional information regarding our dispositions, see Note 4.

Other Property and Equipment

Other Property and Equipment

Other property and equipment includes assets such as buildings, furniture and fixtures, field equipment, leasehold improvements and data processing and communication equipment. These items are generally depreciated by individual components on a straight-line basis over their economic useful life, which is generally from three to ten years. Leasehold improvements are amortized over the lesser of their economic useful lives or the underlying terms of the associated leases. Depreciation expense was $2.6 million in the year ended December 31, 2020 compared to $5.0 million in the year ended December 31, 2019 and $6.0 million in the year ended December 31, 2018.

Leases

Leases

We determine if an arrangement is a lease at inception of the arrangement. To the extent that we determine an arrangement represents a lease, we classify that lease as an operating lease or a finance lease. We currently do not have any material finance leases. We capitalize our operating leases on our consolidated balance sheets through a right-of-use (“ROU”) asset and a corresponding lease liability. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Short-term leases that have an initial term of one year or less are not capitalized but are disclosed. Short-term lease costs exclude expenses related to leases with a lease term of one month or less.

Our operating leases are reflected as operating lease ROU assets, accrued liabilities-current and operating lease liabilities on our consolidated balance sheets. Operating lease ROU assets and liabilities are recognized at the commencement date of an arrangement based on the present value of lease payments over the lease term. In addition to the present value of lease payments, the operating lease ROU asset also includes any lease payments made to the lessor prior to lease commencement less any lease incentives and initial direct costs incurred. Lease expense for operating lease payments is recognized on a straight-line basis over the lease term.

Our leased assets may be used in joint oil and gas operations with other working interest owners. We recognize lease liabilities and ROU assets only when we are the signatory to a contract as an operator of joint properties. Such lease liabilities and ROU assets are determined and disclosed based on gross contractual obligations. Our lease costs are also presented on a gross contractual basis.

Nature of Leases

We lease certain office space, field equipment, vehicles and other equipment under cancelable and non-cancelable leases to support our operations. Certain of our lease agreements include lease and non-lease components. We account for these components as a single lease.

Lease right-of-use assets and liabilities are initially recorded on the lease commencement date based on the present value of lease payments over the lease term. As most of our lease contracts do not provide an implicit discount rate, we use our incremental borrowing rate which is determined based on information available at the commencement date of a lease. Leases may include renewal, purchase or termination options that can extend or shorten the term of the lease. The exercise of those options is at our discretion and is evaluated at inception and throughout the contract to determine if a modification of the lease term is required. Leases with a term of 12 months or less are not recorded as a right-of-use asset and liability.

Other Assets

Other Assets

Other assets at December 31, 2020 include $63.9 million of marketable securities held in our deferred compensation plans and $11.9 million of other investments, including surface acreage. Other assets at December 31, 2019 included $62.0 million of marketable securities held in our deferred compensation plans and $9.6 million of other investments, including surface acreage.

Stock-based Compensation Arrangements

Stock-based Compensation Arrangements

We account for stock-based compensation under the fair value method of accounting. We grant various types of stock-based awards including restricted stock and performance-based awards. The fair value of our restricted stock awards and our performance-based awards (where the performance condition is based on internal performance metrics) is based on the market value of our common stock on the date of grant. The fair value of our performance-based awards where the performance condition is based on market conditions is estimated using a Monte Carlo simulation method.

We recognize stock-based compensation expense on a straight-line basis over the requisite service period for the entire award. The expense we recognize is net of estimated forfeitures. We estimate our forfeiture rate based on prior experience and adjust it as circumstances warrant. If actual forfeitures are different than expected, adjustments to recognize expense may be required in future

periods. To the extent possible, we limit the amount of shares to be issued for these awards by satisfying tax withholding requirements with cash. All awards have been issued at prevailing market prices at the time of grant and the vesting of these awards is based on an employee’s continued employment with us, with the exception of employment termination due to death, disability or retirement. For additional information regarding stock-based compensation, see Note 12.

Derivative Financial Instruments

Derivative Financial Instruments

All of our commodity derivative instruments are issued to manage the price risk attributable to our expected natural gas, NGLs and oil production. While there is risk that the financial benefit of rising natural gas, NGLs and oil prices may not be captured, we believe the benefits of stable and predictable cash flow are more important. Among these benefits are more efficient utilization of existing personnel and planning for future staff additions, the flexibility to enter into long-term projects requiring substantial committed capital, smoother and more efficient execution of our ongoing development drilling and production enhancement programs, more consistent returns on invested capital and better access to bank and other capital markets. All unsettled commodity derivative instruments are recorded in the accompanying consolidated balance sheets as either an asset or a liability measured at their fair value. In most cases, our derivatives are reflected on our consolidated balance sheets on a net basis by brokerage firm when they are governed by master netting agreements, which in an event of default, allows us to offset payables to and receivables from the defaulting counterparty. Changes in a derivative’s fair value are recognized in earnings. Cash flows from derivative contract settlements are reflected in operating activities in the accompanying consolidated statements of cash flows.

All realized and unrealized gains and losses on derivative instruments are accounted for using the mark-to-market accounting method. We recognize all unrealized and realized gains and losses related to these contracts in each period in derivative fair value in the accompanying consolidated statements of operations. Certain of our commodity derivatives are swaps where we receive a fixed price for our production and pay market prices to the counterparty. We also have collars which establish a minimum floor price and a predetermined ceiling price. We also have entered into basis swap agreements. The price we receive for our natural gas production can be more or less than the NYMEX price because of adjustments for delivery location (“basis”), relative quality and other factors; therefore, we have entered into natural gas basis swap agreements that effectively fix our basis adjustments. We have entered into propane basis swaps which lock in the differential between Mont Belvieu and international propane indexes. We have also entered into combined natural gas derivative instruments containing a fixed price swap and a sold option to extend the term or expand the volume (which we refer to as a swaption). The swap price is a fixed price determined at the time of the swaption contract. If the option is exercised, the contract will become a swap treated consistently with our fixed-price swaps. We also have the right to receive contingent consideration related to the sale of our North Louisiana assets. This derivative financial instrument is recorded as an asset in the accompanying consolidated balance sheets. This contingent consideration is based on future natural gas, NGLs and oil prices primarily based on published indexes. For additional information regarding our derivative instruments, see Note 10.

From time to time, we may enter into derivative contracts and pay or receive premium payments at the inception of the derivative contract which represent the fair value of the contract at its inception. These amounts would be included within the net derivative asset or liability on our consolidated balance sheets. The amounts paid or received for derivative premiums reduce or increase the amount of gains and losses that are recorded in the earnings each period as the derivative contracts settle. During 2020, we did not materially modify any existing derivative contracts.

Concentrations of Credit Risk

Concentrations of Credit Risk

As of December 31, 2020, our primary concentrations of credit risk are the risks of collecting accounts receivable and the risk of counterparties’ failure to perform under derivative contracts. Most of our receivables are from a diverse group of companies, including major energy companies, pipeline companies, local distribution companies, financial institutions, commodity traders and end-users in various industries and such receivables are generally unsecured. The nature of our customers’ businesses may impact our overall credit risk, either positively or negatively, in that these entities may be similarly affected by changes in economic or other conditions. To manage risks of collecting accounts receivable, we monitor our counterparties’ financial strength and/or credit ratings and where we deem necessary, we obtain parent company guarantees, prepayments, letters of credit or other credit enhancements to reduce risk of loss. We do not anticipate a material impact on our financial results due to non-performance by third parties.

For the year ended December 31, 2020, we had no customer that accounted for 10% or more of total natural gas, NGLs and oil sales compared to one customer in both of the years ended December 31, 2019 and 2018. We believe that the loss of any one customer would not have an adverse effect on our ability to sell our natural gas, NGLs and oil production.

We have executed International Swap Dealers Association Master Agreements (“ISDA Agreements”) with counterparties for the purpose of entering into derivative contracts. To manage counterparty risk associated with our derivatives, we select and monitor counterparties based on assessment of their financial strength and/or credit ratings. We may also limit the level of exposure with any single counterparty. Additionally, the terms of our ISDA Agreements provide us and our counterparties with netting rights such that we may offset payables against receivables with a counterparty under separate derivative contracts. Our ISDA Agreements also generally contain set-off rights such that, upon the occurrence of defined acts of default by either us or a counterparty to a derivative contract, the non-defaulting party may set-off receivables owed under all derivative contracts against payables from other agreements

with that counterparty. None of our derivative contracts have a margin requirement or collateral provision that would require us to fund or post additional collateral prior to the scheduled cash settlement date.

At December 31, 2020, our derivative counterparties included twenty financial institutions and commodity traders, of which all but five are secured lenders in our bank credit facility. At December 31, 2020, our net derivative asset includes a payable to three counterparties not included in our bank credit facility totaling $4.5 million and a receivable from the remaining two counterparties of $5.2 million. In determining fair value of derivative assets, we evaluate the risk of non-performance and incorporate factors such as amounts owed under other agreements permitting set-off, as well as pricing of credit default swaps for the counterparty. Historically, we have not experienced any issues of non-performance by derivative counterparties. Net derivative liabilities are determined in part by using our market based credit spread to incorporate our theoretical risk of non-performance.

Asset Retirement Obligations

Asset Retirement Obligations

The fair value of asset retirement obligations is recognized in the period they are incurred, if a reasonable estimate of fair value can be made. Asset retirement obligations primarily relate to the abandonment of natural gas and oil producing facilities and include costs to dismantle and relocate or dispose of production platforms, gathering systems, wells and related structures. Estimates are based on historical experience of plugging and abandoning wells, estimated remaining lives of those wells based on reserve estimates, external estimates of the cost to plug and abandon the wells in the future and federal and state regulatory requirements. Depreciation of capitalized asset retirement costs will generally be determined on a units-of-production basis while accretion to be recognized will escalate over the life of the producing assets. See Note 9 for additional information.

Exit Costs

Exit Costs

We recognize the fair value of a liability for an exit cost in the period in which a liability is incurred. The recognition and fair value estimation of an exit cost liability requires that management take into account certain estimates and assumptions. Fair value estimates are based on future discounted cash outflows required to satisfy the obligation. In periods subsequent to initial measurement, changes to an exit cost liability, including changes resulting from revisions to either the timing or the amount of estimated cash flows over the future contract period, are recognized as an adjustment to the liability in the period of the change utilizing the initial discount rate. These costs, including associated accretion expense, are included in exit and termination costs in the accompanying consolidated statements of operations. See Note 16 for additional information.

Contingencies

Contingencies

We are subject to legal proceedings, claims, and liabilities and environmental matters that arise in the ordinary course of business. We accrue for losses when such losses are considered probable and the amounts can be reasonably estimated. See Note 15 for a more detailed discussion regarding our contingencies.

Environmental Costs

Environmental Costs

Environmental expenditures are capitalized if the costs mitigate or prevent future contamination or if the costs improve environmental safety or efficiency of the existing assets. Expenditures that relate to an existing condition caused by past operations that have no future economic benefits are expensed.

Deferred Taxes

Deferred Taxes

Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to the differences between the financial statement carrying amounts of assets and liabilities and their tax bases as reported in our filings with the respective taxing authorities. Deferred tax assets are recorded when it is more likely than not that they will be realized. The realization of deferred tax assets is assessed periodically based on several interrelated factors. These factors may include our expectation to generate sufficient taxable income in the periods before tax credits and operating loss carryforwards expire. All deferred taxes are classified as long-term on our consolidated balance sheets.

Treasury Stock

Treasury Stock

Treasury stock purchases are recorded at cost. Upon reissuance, the cost of treasury shares held is reduced by the average purchase price per share of the aggregate treasury shares held.

Accounting Standards

Recently Adopted

Financial Instruments – Credit Losses

In September 2016, an accounting standards update was issued that changes the impairment model for trade receivables, net investments in leases, debt securities, loans and certain other instruments. The standards update requires the use of a forward-looking

“expected loss” model as opposed to the current “incurred loss” model. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements.

Fair Value Measurement

In August 2018, an accounting standards update was issued which provides additional disclosure requirements for fair value measurements. This new standards update eliminates the requirement to disclose transfers between Level 1 and Level 2 of the fair value hierarchy and provides for additional disclosures for Level 3 fair value measurements. This new standards update was effective for us in first quarter 2020. The adoption of this standards update did not have a material impact on our financial statements.

Not Yet Adopted

None that are expected to have a material impact.

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Revenues from Contracts with Customers (Tables)

12 Months Ended

Dec. 31, 2020

Revenue From Contract With Customer [Abstract]

Disaggregation of Revenue by Identified Revenue Stream

Revenue attributable to each of our identified revenue streams is disaggregated below (in thousands):

	Year Ended December 31,
		2020		2019		2018
Natural gas sales	$	943,740	$	1,388,838	$	1,663,832
NGLs sales		578,454		681,134		931,360
Oil sales		85,519		185,453		255,885
Total natural gas, NGLs and oil sales		1,607,713		2,255,425		2,851,077
Sales of purchased natural gas		160,122		332,006		459,634
Sales of purchased NGLs		3,776		1,661		9,017
Other marketing revenue		9,375		11,842		14,109
Total	$	1,780,986	$	2,600,934	$	3,333,837

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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax

Our income tax benefit was $25.6 million for the year ended December 31, 2020 compared to $500.3 million in 2019 and $30.5 million in 2018. Reconciliation between the statutory federal income tax rate and our effective income tax rate is as follows:

	Year Ended December 31,
	2020		2019			2018
Federal statutory tax rate	21.0	%		21.0	%		21.0	%
State, net of federal benefit	5.2			3.8			(0.3	)
State rate and law change	4.3			1.8			0.9
Valuation allowances	(26.3	)		(3.8	)		(0.4	)
Non-deductible equity compensation	(0.7	)		(0.2	)		(0.1	)
Goodwill impairment	—			—			(19.4	)
Consolidated effective tax rate	3.5	%		22.6	%		1.7	%

Income Tax (Benefit) Expense Attributable to (Loss) Income Before Income Taxes

Income tax (benefit) expense attributable to (loss) income before income taxes consists of the following (in thousands):

		2020									2019										2018
		Current		Deferred			Total			Current		Deferred			Total				Current					Deferred			Total
U.S. federal	$	(366	)	$	(24,489	)	$	(24,855	)	$	—	$	(434,585	)		$	(434,585	)		$		—	$		(25,322	)	$	(25,322	)
U.S. state and local		(157	)		(540	)		(697	)		6,147		(71,853	)			(65,706	)				—			(5,167	)		(5,167	)
Total	$	(523	)	$	(25,029	)	$	(25,552	)	$	6,147	$	(506,438	)		$	(500,291	)		$		—	$		(30,489	)	$	(30,489	)

Significant Components of Deferred Tax Assets and Liabilities

Significant components of deferred tax assets and liabilities are as follows:

	December 31,
	2020			2019
	(in thousands)
Deferred tax assets:
Net operating loss carryforward	$	879,339		$	581,324
Divestiture contract obligation		132,352			—
Deferred compensation		16,635			16,815
Equity compensation		5,445			7,188
Asset retirement obligation		18,923			60,064
Interest expense carryover		15,757			18,035
Lease deferred tax assets		16,070			16,450
Cumulative mark-to-market loss		2,607			—
Other		12,082			11,072
Valuation allowances:
Federal		(152,499	)		(32,530	)
State, net of federal benefit		(226,520	)		(158,296	)
Total deferred tax assets		720,191			520,122
Deferred tax liabilities:
Depreciation and depletion		(839,869	)		(639,581	)
Cumulative mark-to-market gain		—			(25,957	)
Lease deferred tax liabilities		(15,058	)		(14,780	)
Other		(531	)		—
Total deferred tax liabilities		(855,458	)		(680,318	)
Net deferred tax liability	$	(135,267	)	$	(160,196	)

Changes in Deferred Tax Asset Valuation Allowances

The changes in our deferred tax asset valuation allowances are as follows (in thousands):

		2020			2019			2018
Balance at the beginning of the year	$	(190,826	)	$	(120,347	)	$	(125,134	)
Charged to provision for income taxes:
State net operating loss carryforwards		(56,903	)		(25,710	)		(23,926	)
Federal net operating loss carryforwards		(113,988	)		13,780			11,716
Non-recoverable deferred tax assets		(7,433	)		(28,208	)		—
Other state valuation allowances		(11,321	)		(31,214	)		16,380
Other federal valuation allowances		244			346			494
Other		1,208			527			123
Balance at the end of the year	$	(379,019	)	$	(190,826	)	$	(120,347	)

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Net Income (Loss) Per Common Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Computations of Basic and Diluted Income (Loss) Per Common Share

Basic income or loss per share attributable to common stockholders is computed as (i) income or loss attributable to common stockholders (ii) less income allocable to participating securities (iii) divided by weighted average basic shares outstanding. Diluted income or loss per share attributable to common stockholders is computed as (i) basic income or loss attributable to common stockholders (ii) plus diluted adjustments to income allocable to participating securities (iii) divided by weighted average diluted shares outstanding. Diluted net income (loss) per share is calculated under both the two class method and the treasury stock method and the more dilutive of the two calculations is presented. The following table sets forth a reconciliation of net income or loss to basic income or loss attributable to common stockholders and to diluted income or loss attributable to common stockholders (in thousands except per share amounts):

	Year Ended December 31,
	2020			2019			2018
Net loss, as reported	$	(711,777	)	$	(1,716,297	)	$	(1,746,481	)
Participating basic earnings (a)		—			(251	)		(245	)
Basic net loss attributed to common stockholders		(711,777	)		(1,716,548	)		(1,746,726	)
Reallocation of participating earnings (a)		—			—			—
Diluted net loss attributed to common stockholders	$	(711,777	)	$	(1,716,548	)	$	(1,746,726	)
Net loss per common share:
Basic	$	(2.95	)	$	(6.92	)	$	(7.10	)
Diluted	$	(2.95	)	$	(6.92	)	$	(7.10	)

^(a)  Restricted stock Liability Awards represent participating securities because they participate in nonforfeitable dividends or distributions with common equity owners. Income allocable to participating securities represents the distributed and undistributed earnings attributable to the participating securities. Participating securities, however, do not participate in undistributed net losses.

Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding

The following table details basic weighted average common shares outstanding and diluted weighted average common shares outstanding (in thousands):

	Year Ended December 31,
	2020	2019		2018
Denominator:
Weighted average common shares outstanding – basic and diluted	241,373		247,970		246,171

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Indebtedness (Tables)

12 Months Ended

Dec. 31, 2020

Debt Disclosure [Abstract]

Debt Outstanding

We had the following debt outstanding as of the dates shown below (in thousands) (bank debt interest rate at December 31, 2020 is shown parenthetically). The expenses of issuing debt are capitalized and included as a reduction to debt in the accompanying consolidated balance sheets. These costs are amortized over the expected life of the related instruments. When debt is retired before maturity, or modifications significantly change the cash flows, the related unamortized costs are expensed. No interest was capitalized in the three-year period ended December 31, 2020.

		December 31, 2020			December 31, 2019
Bank debt (2.2%)	$	702,000		$	477,000
Senior notes
4.875% senior notes due 2025		750,000			750,000
5.00% senior notes due 2022		169,589			511,886
5.00% senior notes due 2023		532,335			741,531
5.75% senior notes due 2021		25,496			374,139
5.875% senior notes due 2022		48,528			297,617
9.25% senior notes due 2026		850,000			—
Other senior notes due 2022		490			590
Total senior notes		2,376,438			2,675,763
Senior subordinated notes
5.00% senior subordinated notes due 2022		9,730			19,054
5.00% senior subordinated notes due 2023		7,712			7,712
5.75% senior subordinated notes due 2021		19,896			22,214
Total senior subordinated notes		37,338			48,980
Total debt		3,115,776			3,201,743
Unamortized premium		456			3,013
Unamortized debt issuance costs		(30,625	)		(31,819	)
Total debt (net of debt issuance costs)	$	3,085,607		$	3,172,937

Schedule for Long-Term Debt Outstanding

The following is the principal maturity schedule for our long-term debt outstanding as of December 31, 2020 (in thousands):

	Year Ended December 31,
2021	$	45,392
2022		228,337
2023		1,242,047
2024		—
2025		750,000
Thereafter		850,000
	$	3,115,776

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Asset Retirement Obligations (Tables)

12 Months Ended

Dec. 31, 2020

Asset Retirement Obligation Disclosure [Abstract]

Asset Retirement Obligation

The following is a reconciliation of our liability for plugging and abandonment costs as of December 31, 2020 and 2019 (in thousands):

	2020			2019
Beginning of period	$	251,076		$	312,754
Liabilities incurred		1,483			4,063
Acquisitions		123			—
Liabilities settled		(4,634	)		(5,953	)
Disposition of wells		(176,748	)		(82,576	)
Accretion expense		7,518			15,658
Change in estimate		1,004			7,130
End of period		79,822			251,076
Less current portion		(6,689	)		(2,393	)
Long-term asset retirement obligations	$	73,133		$	248,683

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Derivative Activities (Tables)

12 Months Ended

Dec. 31, 2020

Derivative Instruments And Hedging Activities Disclosure [Abstract]

Derivative Volumes Hedged and Average Hedge Prices

The following table sets forth the derivative volumes by year as of December 31, 2020, excluding our basis and freight swaps and divestiture contingent consideration which are discussed separately below:

Period	Contract Type	Volume Hedged	Weighted Average Hedge Price
			Swap		Sold Put	Floor	Ceiling
Natural Gas (1)
2021	Swaps	550,000 Mmbtu/day	$	2.77
January-October 2021	Collars	342,237 Mmbtu/day				$ 2.51	$ 3.00
2021	Three-way Collars	240,000 Mmbtu/day			$ 1.99	$ 2.33	$ 2.60
Crude Oil
2021	Swaps	3,479 bbls/day	$	46.11
NGLs (C3-Propane)
January-June 2021	Swaps	6,972 bbls/day	$	0.55/gallon
January-June 2021	Collars	5,000 bbls/day				$ 0.50/gallon	$ 0.60/gallon
NGLs (NC4-Normal Butane)
January-March 2021	Swaps	2,000 bbls/day	$	0.71/gallon
January-March 2021	Collars	1,000 bbls/day				$ 0.60/gallon	$ 0.70/gallon
NGLs (C5-Natural Gasoline)
January-September 2021	Swaps	2,821 bbls/day	$	0.92/gallon
January-March 2021	Calls	1,000 bbls/day	$	0.95/gallon

⁽¹⁾ We also sold natural gas call swaptions of 280,000 Mmbtu/day for 2022 at a weighted average price of $2.81 per Mmbtu.

Combined Fair Value of Derivatives, by Consolidated Balance Sheets

The combined fair value of derivatives included in the accompanying consolidated balance sheets as of December 31, 2020 and 2019 is summarized below (in thousands). As of December 31, 2020, we are conducting derivative activities with twenty counterparties, of which all but five are secured lenders in our bank credit facility. We believe all of these counterparties are acceptable credit risks. At times, such risks may be concentrated with certain counterparties. The credit worthiness of our counterparties is subject to periodic review. The assets and liabilities are netted where derivatives with both gain and loss positions are held by a single counterparty and we have master netting arrangements.

		December 31, 2020
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	33,559	$	(16,821	)	$	16,738
	–collars		7,016		(2,329	)		4,687
	–three-way collars		535		(6,139	)		(5,604	)
	–basis swaps		7,894		(3,502	)		4,392
Crude oil	–swaps		2,465		(829	)		1,636
NGLs	–C3 propane spread		4,863		(4,863	)		—
	–C3 propane collars		—		(107	)		(107	)
Freight	–swaps		2,310		—			2,310
Divestiture contingent consideration			15,960		—			15,960
		$	74,602	$	(34,590	)	$	40,012

		December 31, 2020
		Gross Amounts of  Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(10,120	)	$	16,821	$	6,701
	–swaptions		(9,803	)		—		(9,803	)
	–collars		—			2,329		2,329
	–three-way collars		(18,353	)		6,139		(12,214	)
	–basis swaps		(4,197	)		3,502		(695	)
Crude oil	–swaps		(5,471	)		829		(4,642	)
NGLs	–C3 propane spread		(4,069	)		4,863		794
	–C3 propane swaps		(8,243	)		—		(8,243	)
	–C3 propane collars		(3,086	)		107		(2,979	)
	–C5 natural gasoline swaps		(4,897	)		—		(4,897	)
	–C5 natural gasoline calls		(546	)		—		(546	)
	–NC4 butane swaps		(651	)		—		(651	)
	–NC4 butane collars		(401	)		—		(401	)
Freight	–swaps		(1,206	)		—		(1,206	)
		$	(71,043	)	$	34,590	$	(36,453	)

		December 31, 2019
		Gross Amounts of Recognized Assets		Gross Amounts Offset in the Balance Sheet			Net Amounts of Assets Presented in the Balance Sheet
Derivative assets:
Natural gas	–swaps	$	134,364	$	(2,913	)	$	131,451
	–swaptions		—		(1,325	)		(1,325	)
	–basis swaps		10,766		(1,092	)		9,674
Crude oil	–swaps		3,893		(4,794	)		(901	)
	–swaptions		—		(1,597	)		(1,597	)
	–calls		—		(349	)		(349	)
NGLs	–C3 propane spread swaps		1,913		(1,913	)		—
	–NC4 butane swaps		167		—			167
	–C5 natural gasoline swaps		60		(127	)		(67	)
Freight	–swaps		1,529		(1,028	)		501
		$	152,692	$	(15,138	)	$	137,554

		December 31, 2019
		Gross Amounts of  Recognized (Liabilities)			Gross Amounts Offset in the Balance Sheet		Net Amounts of (Liabilities) Presented in the Balance Sheet
Derivative (liabilities):
Natural gas	–swaps	$	(1,657	)	$	2,913	$	1,256
	–swaptions		(2,594	)		1,325		(1,269	)
	–basis swaps		(1,371	)		1,092		(279	)
Crude oil	–swaps		(4,814	)		4,794		(20	)
	–swaptions		(2,254	)		1,597		(657	)
	–calls		(349	)		349		—
NGLs	–C3 propane spread swaps		(16,040	)		1,913		(14,127	)
	–C5 natural gasoline swaps		(127	)		127		—
Freight	–swaps		—			1,028		1,028
		$	(29,206	)	$	15,138	$	(14,068	)

Effects of Derivatives on Consolidated Statements of Operations

The effects of our derivatives on our consolidated statements of operations for the last three years are summarized below (in thousands).

	Derivative Fair Value Income (Loss)
	Year Ended December 31,
	2020			2019			2018
Commodity swaps	$	158,248		$	219,968		$	(57,950	)
Swaptions		(4,955	)		333			(6,556	)
Collars		3,304			(3,903	)		17,583
Three-way collars		(16,346	)		—			—
Basis swaps		48,278			6,661			(1,104	)
Calls		(558	)		(349	)		(2,653	)
Freight swaps		(1,230	)		3,971			(512	)
Divestiture contingent consideration		970			—			—
Total	$	187,711		$	226,681		$	(51,192	)

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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value

We use a market approach for our recurring fair value measurements and endeavor to use the best information available. Accordingly, valuation techniques that maximize the use of observable impacts are favored. The following tables present the fair value hierarchy table for assets and liabilities measured at fair value, on a recurring basis (in thousands):

		Fair Value Measurements at December 31, 2020 Using:
		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2020
Trading securities held in the deferred compensation plans		$	63,942	$	—		$	—		$	63,942
Derivatives	–swaps		—		6,642			—			6,642
	–calls		—		—			(546	)		(546	)
	–collars		—		7,016			(3,487	)		3,529
	–three-way collars		—		(17,818	)		—			(17,818	)
	–basis swaps		—		4,491			—			4,491
	–swaptions		—		—			(9,803	)		(9,803	)
Derivatives–freight swaps			—		1,104			—			1,104
Divestiture contingent consideration			—		15,960			—			15,960

		Fair Value Measurements at December 31, 2019 Using:
		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)			Total Carrying Value as of December 31, 2019
Trading securities held in the deferred compensation plans		$	62,009	$	—		$	—		$	62,009
Derivatives	–swaps		—		131,886			—			131,886
	–calls		—		(349	)		—			(349	)
	–basis swaps		—		(4,732	)		—			(4,732	)
	–swaptions		—		—			(4,848	)		(4,848	)
Derivatives	–freight swaps		—		1,529			—			1,529

Reconciliation of the Beginning and Ending Balances for Derivative Instruments Classified as Level 3 in the Fair Value Hierarchy

The following is a reconciliation of the beginning and ending balances for derivative instruments classified as Level 3 in the fair value hierarchy (in thousands):

		Year Ended December 31, 2020
Balance at December 31, 2019	$	(4,848	)
Total gains (losses):
Included in earnings		(13,836	)
Settlements, net		2,743
Transfers in and/or out of Level 3		2,105
Balance at December 31, 2020	$	(13,836	)

Value of Assets Measured at Fair Value on Nonrecurring Basis

The following table presents the value of these assets measured at fair value on a nonrecurring basis at the time impairment was recorded (in thousands):

	Year Ended December 31,
	2020				2019				2018
	Fair Value		Impairment		Fair Value		Impairment		Fair Value		Impairment
Natural gas and oil properties	$	290,500	$	77,000	$	370,500	$	1,093,531	$	32,516	$	22,614

Carrying Amounts and Fair Values of Financial Instruments

The following table presents the carrying amounts and the fair values of our financial instruments as of December 31, 2020 and 2019 (in thousands):

	December 31, 2020						December 31, 2019
	Carrying Value			Fair Value			Carrying Value			Fair Value
Assets:
Commodity swaps, collar, options and basis swaps	$	24,052		$	24,052		$	137,554		$	137,554
Divestiture contingent consideration		15,960			15,960			—			—
Marketable securities (a)		63,942			63,942			62,009			62,009
(Liabilities):
Commodity swaps, collar, options and basis swaps		(36,453	)		(36,453	)		(14,068	)		(14,068	)
Bank credit facility (b)		(702,000	)		(702,000	)		(477,000	)		(477,000	)
5.75% senior notes due 2021 (b)		(25,496	)		(25,474	)		(374,139	)		(375,909	)
5.00% senior notes due 2022 (b)		(169,589	)		(170,128	)		(511,886	)		(501,582	)
5.875% senior notes due 2022 (b)		(48,528	)		(48,471	)		(297,617	)		(294,757	)
Other senior notes due 2022 (b)		(490	)		(490	)		(590	)		(592	)
5.00% senior notes due 2023 (b)		(532,335	)		(521,699	)		(741,531	)		(683,291	)
4.875% senior notes due 2025 (b)		(750,000	)		(707,918	)		(750,000	)		(645,098	)
9.25% senior notes due 2026 (b)		(850,000	)		(888,208	)		—			—
5.75% senior subordinated notes due 2021 (b)		(19,896	)		(19,589	)		(22,214	)		(21,539	)
5.00% senior subordinated notes due 2022 (b)		(9,730	)		(9,247	)		(19,054	)		(17,011	)
5.00% senior subordinated notes due 2023 (b)		(7,712	)		(6,604	)		(7,712	)		(7,654	)
Deferred compensation plan (c)		(96,563	)		(96,563	)		(74,472	)		(74,472	)

^(a) Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges.

^(b) The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs.

^(c) The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

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Stock-based Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2020

Allocation of Stock-Based Compensation by Functional Category

The following table details the amount of stock-based compensation that is allocated to functional expense categories for each of the years in the three-year period ended December 31, 2020 (in thousands):

	2020		2019			2018
Direct operating expense	$	1,078		$	1,928		$	2,109
Brokered natural gas and marketing expense		1,416			1,856			1,452
Exploration expense		1,279			1,566			1,921
General and administrative expense		32,905			35,061			43,806
Termination costs		2,165			1,971			—
Total stock-based compensation	$	38,843		$	42,382		$	49,288

Restricted Stock and Restricted Stock Units Outstanding

The following is a summary of the status of our non-vested restricted stock outstanding at December 31, 2020:

	Restricted Stock Equity Awards					Restricted Stock Liability Awards
	Shares			Weighted Average Grant Date Fair Value		Shares			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019		2,002,239		$	12.32		411,126		$	10.94
Granted		4,462,711			3.42		3,535,093			3.18
Vested		(3,063,652	)		6.93		(2,678,013	)		3.94
Forfeited		(585,438	)		8.03		(81,570	)		3.02
Outstanding at December 31, 2020		2,815,860		$	4.97		1,186,636		$	4.18

Schedule of Share Based Payment Award Performance Stock Awards Valuation Assumptions

The following assumptions were used to estimate the fair value of the TSR-PSUs granted during the years ended December 31, 2020, 2019 and 2018:

	Year Ended December 31, 2019
	2020			2019			2018
Risk-free interest rate		1.4	%		2.44	%		2.42	%
Expected annual volatility		65	%		46	%		48	%
Grant date fair value per unit	$	3.85		$	11.34		$	18.51

Summary of Change in Post Retirement Benefit Obligation

The change in our post-retirement benefit obligation is as follows (in thousands):

Change in Benefit Obligation:	2020			2019
Benefit obligation at beginning of year	$	1,957		$	1,355
Service cost		80			88
Interest cost		50			68
Actuarial (gain) loss		(39	)		532
Benefits paid		(95	)		(86	)
Benefit obligation at end of year	$	1,953		$	1,957
Amounts recognized in the consolidated balance sheet:
Long-term liabilities	$	1,953		$	1,957
Components of Net Periodic Post Retirement Benefit Cost:
Service cost	$	80		$	88
Interest cost		50			68
Amortization of prior service cost		369			369
Net periodic post retirement costs (recognized in general and administrative expense)	$	499		$	525
Other Changes in Benefit Obligations in Other Comprehensive Income (Loss):
Net (gain) loss	$	(39	)	$	532
Prior service cost		—			—
Amortization of prior service cost		(369	)		(369	)
Total recognized in other comprehensive (loss) income	$	(408	)	$	163
Total recognized in net periodic benefit cost and other comprehensive income	$	91		$	688

Summary of Assumptions Used to Determine Benefit Obligation

The following summarizes the assumptions used to determine the benefit obligation at December 31, 2020 and 2019:

	December 31, 2020			December 31, 2019
Weighted average assumptions used to determine benefit obligation:
Discount rate		1.9	%		2.9	%
Assumed weighted average healthcare cost trend rates:
Initial healthcare trend rate		6.5	%		6.5	%
Ultimate trend rate		4.5	%		4.5	%
Year ultimate trend rate reached		2024			2023

Performance-based PG-PSUs and RG-PSUs

Summary of Non-Vested Awards Activities

The following is a summary of our non-vested PG/RG-PSUs award activities at December

Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019	881,573		$	11.70
Units granted (a)	777,847			2.33
Vested	(101,150	)		15.32
Forfeited (b)	(459,168	)		2.33
Outstanding at December 31, 2020	1,099,102		$	5.92

^(a) Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets.

^(b) For RG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the performance metric is not expected to be met and are considered forfeited. For PG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the payout is estimated at 23% with the remainder considered to be forfeited.

Performance Based TSR - PSUs

Summary of Non-Vested Awards Activities

The following is a summary of our non-vested TSR – PSUs award activities:

	Number of Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2019		993,452		$	19.00
Granted (a)		610,155			3.85
Vested and issued (b)		(278,184	)		26.12
Forfeited		(75,899	)		26.66
Outstanding at December 31, 2020		1,249,524		$	9.55

^(a) These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

^(b) Includes 278,184 TSR-PSUs awards issued related to 2017 performance where the return on our common stock was in the 60^th percentile for the March 2017 grant and the 80^th percentile for the May 2017 grant. The remaining 2017 awards were considered to be forfeited.

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Capital Stock (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Schedule of Changes in Number of Common Shares Outstanding

The following is a schedule of changes in the number of common shares outstanding since the beginning of 2019:

	Year Ended December 31,
	2020			2019
Beginning balance		249,630,803			249,510,022
Restricted stock grants		3,390,358			1,186,290
Restricted stock units vested		1,226,473			720,212
Performance stock units issued		279,420			12,283
Performance stock dividends		18,700			464
Treasury shares		(8,197,662	)		(1,798,468	)
Ending balance		246,348,092			249,630,803

Schedule of Change in Treasury Shares

The following is a schedule of the change in treasury shares since the beginning of 2019:

	Year Ended December 31,
	2020			2019
Beginning balance		1,808,133			9,665
Rabbi trust shares distributed and/or sold		(2,338	)		(1,532	)
Shares repurchased		8,200,000			1,800,000
Ending balance		10,005,795			1,808,133

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Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Year Ended December 31,
	2020			2019			2018
	(in thousands)
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities	$	343		$	—		$	7,521
Interest paid		(168,471	)		(189,443	)		(207,433	)
Non-cash investing and financing activities included:
Asset retirement costs capitalized, net	$	2,610		$	11,193		$	28,826
Decrease in accrued capital expenditures		(23,625	)		(20,104	)		(119,021	)

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Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments And Contingencies Disclosure [Abstract]

Schedule of Components of Lease Expense

The components of our total lease expense for the two years ended December 31, 2020, the majority of which is included in general and administrative expense, are as follows (in thousands):

		Year Ended December 31,
		2020			2019
Operating lease cost	$	27,895		$	15,536
Variable lease expense (1)		33,849			6,916
Short-term lease expense (2)		1,866			2,965
Sublease income		(3,199	)		(3,496	)
Total lease expense	$	60,411		$	21,921
Short-term lease costs (3)	$	15,984		$	29,126

(1)   Variable lease payments that are not dependent on an index or rate are not included in the lease liability or ROU assets.

(2)   Short-term lease expense represents expense related to leases with a contract term of one year or less.

(3)   These short-term lease costs are related to leases with a contract term of one year or less and the majority of which are related to drilling rigs and are capitalized as part of natural gas and oil properties on our consolidated balance sheets and may fluctuate based on the number of drilling rigs being utilized.

Supplemental Cash Flow Information Related to Operating Leases

Supplemental cash flow information related to our operating leases is included in the table below (in thousands):

			Year Ended December 31,
		2020			2019
Cash paid for amounts included in the measurement of lease liabilities	$	32,030		$	18,700
ROU assets added in exchange for lease obligations	$	27,769		$	24,839

Supplemental Balance Sheet Information Related to Operating Leases

Supplemental balance sheet information related to our operating leases is included in the table below (in thousands):

			Year Ended December 31,
		2020				2019
Operating lease ROU assets	$	63,581			$	62,053
Accrued liabilities – current	$	(24,673		)	$	(27,856	)
Operating lease liabilities – long-term	$	(43,155		)	$	(41,068	)

Schedule of Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating Leases

Our weighted average remaining lease term and weighted average discount rate for our operating leases are as follows:

	Year Ended December 31,
	2020	2019
Weighted average remaining lease term	4.0 years	4.6 years
Weighted average discount rate	6%	6%

Schedule of Lease Liabilities with Enforceable Contract Terms are Greater Than One year Mature

Our lease liabilities with enforceable contract terms that are greater than one year mature as follows (in thousands):

		Operating Leases
2021	$	27,850
2022		20,868
2023		6,866
2024		6,468
2025		6,468
Thereafter		8,795
Total lease payments		77,315
Less effects of discounting		(9,487	)
Total lease liability	$	67,828

Schedule of Future Minimum Transportation Fees Due

We have entered into firm transportation and gathering contracts with various pipeline carriers for the future transportation and gathering of natural gas, NGLs and oil production from our properties in Pennsylvania. Under these contracts, we are obligated to transport, process or gather minimum daily natural gas volumes, or pay for any deficiencies at a specified reservation fee rate. Our production committed to these pipelines is currently expected to exceed the minimum daily volumes provided in the contracts. However, if in the future we fail to deliver the committed volumes, we would recognize a deficiency payment in the period in which the under delivery takes place and the related liability has been incurred. As of December 31, 2020, future minimum transportation, processing and gathering fees under our commitments are as follows (in thousands):

	Transportation, Gathering and Processing Contracts (a)
2021	$	837,792
2022		818,569
2023		782,130
2024		766,474
2025		680,757
Thereafter		4,138,532
	$	8,024,254

^(a) The amounts in this table represent the gross amounts that we are committed to pay; however, we will record in our financial statements our proportionate share of costs based on our working interest which can vary based on volumes produced.

Schedule of Estimated Settlement of Divestiture Contract Obligation Based On Discounted Value

As of December 31, 2020, our estimated settlement of this retained obligation based on a discounted value is as follows (in thousands):

	Divestiture Contract Obligation
2021	$	92,593
2022		74,942
2023		62,639
2024		54,042
2025		47,704
Thereafter		152,175
	$	484,095

Future Delivery Commitments

We have various volume delivery commitments that are related to our Marcellus Shale properties. We expect to be able to fulfill our contractual obligations from our own production; however, we may purchase third-party volumes to satisfy our commitments or pay demand fees for commitment shortfalls, should they occur. As of December 31, 2020, our delivery commitments through 2031 were as follows:

Year Ending December 31,	Natural Gas (mmbtu per day)		Ethane and Propane (bbls per day)
2021		476,877	35,000
2022		477,679	35,000
2023		292,423	35,000
2024		211,216	35,000
2025		170,000	35,000
2026		158,301	35,000
2027		100,000	35,000
2028		100,000	35,000
2029		100,000	20,000
2030-2031		—	20,000

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Exit and Termination Costs (Tables)

12 Months Ended

Dec. 31, 2020

Restructuring And Related Activities [Abstract]

Summary of Exit and Termination Costs

The following summarizes our exit and termination costs for the three years ended December 31, 2020, 2019 and 2018 (in thousands):

	Year Ended December 31,
	2020		2019			2018
Severance costs	$	5,909	$	7,535	$	(356	)
Transportation contract capacity releases (including accretion of    discount)		10,900		—		—
Divestiture contract obligation (including accretion of discount)		499,935		—		—
One-time minimum volume commitment contract payment		28,500		—		—
Stock-based compensation and other		2,165		1,971		(17	)
	$	547,409	$	9,506	$	(373	)

Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet

The following details the accrued exit and termination cost liability activity for the years ended December 31, 2020 and 2019 (in thousands):

	Exit Costs			Termination Costs
Balance at December 31, 2018	$	—		$	—
Accrued severance costs		—			7,535
Payments		—			(2,843	)
Balance at December 31, 2019		—			4,692
Accrued severance costs		—			5,909
Accrued contract obligations		490,114			—
Accretion of discount		20,720			—
Payments		(17,291	)		(9,147	)
Balance at December 31, 2020	$	493,543		$	1,454

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Suspended Exploratory Well Costs (Tables)

12 Months Ended

Dec. 31, 2020

Capitalized Exploratory Well Costs [Abstract]

Schedule Of Changes In Capitalized Exploratory Well Costs

The following table reflects the changes in capitalized exploratory well costs for the year ended December 31, 2020. We had no capitalized exploratory well costs for the years ended December 31, 2019 and 2018 (in thousands):

		2020
Balance at beginning of period	$	—
Additions to capitalized exploratory well costs pending the determination of proved reserves		7,709
Reclassifications to wells, facilities and equipment based on determination of proved reserves		—
Capitalized exploratory well costs, charged to expense		—
Balance at end of period	$	7,709
Less exploratory well costs that have been capitalized for a period of one year or less	$	7,709
Capitalized exploratory well costs that have been capitalized for a period greater than one year	$	—

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Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Accounting Changes And Error Corrections [Abstract]

Schedule of Effect of Error on Previously Reported Financial Statements

The effects of this error on our previously reported 2020 quarterly statements of operations on a quarter-to-date basis are as follows (in thousands, except per share data):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total revenues and other     income	$	693,920		$	376,546		$	299,345		$	—		$	—		$	—		$	693,920		$	376,546		$	299,345
Total costs and expenses		498,727			566,395			1,084,644			—			—			—			498,727			566,395			1,084,644
Income (loss) before     income taxes		195,193			(189,849	)		(785,299	)		—			—			—			195,193			(189,849	)		(785,299	)
Income tax (benefit) expense
Current		(363	)		(3	)		—			—			—			—			(363	)		(3	)		—
Deferred		50,581			(43,277	)		(105,251	)		(21,220	)		21,014			68,742			29,361			(22,263	)		(36,509	)
		50,218			(43,280)			(105,251	)		(21,220	)		21,014			68,742			28,998			(22,266	)		(36,509	)
Net income (loss)	$	144,975		$	(146,569)		$	(680,048	)	$	21,220		$	(21,014	)	$	(68,742	)	$	166,195		$	(167,583	)	$	(748,790	)
Net income (loss) per     common share:
Basic	$	0.58		$	(0.61	)	$	(2.83	)	$	0.09		$	(0.09	)	$	(0.29	)	$	0.67		$	(0.70	)	$	(3.12	)
Diluted	$	0.58		$	(0.61	)	$	(2.83	)	$	0.08		$	(0.09	)	$	(0.29	)	$	0.66		$	(0.70	)	$	(3.12	)
Comprehensive     income (loss)	$	145,048		$	(146,498	)	$	(679,978	)	$	21,220		$	(21,014	)	$	(68,742	)	$	166,268		$	(167,512	)	$	(748,720	)

The effects of this error on our previously reported 2020 quarterly statements of operations on a year-to-date basis are as follows (in thousands, except per share data):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total revenues and other      income	$	693,920		$	1,070,466		$	1,369,811		$	—		$	—		$	—		$	693,920		$	1,070,466		$	1,369,811
Total costs and expenses		498,727			1,065,122			2,149,766			—			—			—			498,727			1,065,122			2,149,766
Income (loss) before     income taxes		195,193			5,344			(779,955	)		—			—			—			195,193			5,344			(779,955	)
Income tax (benefit) expense
Current		(363	)		(366	)		(366	)		—			—			—			(363	)		(366	)		(366	)
Deferred		50,581			7,304			(97,947	)		(21,220	)		(206	)		68,536			29,361			7,098			(29,411	)
		50,218			6,938			(98,313	)		(21,220	)		(206	)		68,536			28,998			6,732			(29,777	)
Net income (loss)	$	144,975		$	(1,594	)	$	(681,642	)	$	21,220		$	206		$	(68,536	)	$	166,195		$	(1,388	)	$	(750,178	)
Net income (loss) per     common share:
Basic	$	0.58		$	(0.01	)	$	(2.82	)	$	0.09		$	—		$	(0.28	)	$	0.67		$	(0.01	)	$	(3.10	)
Diluted	$	0.58		$	(0.01	)	$	(2.82	)	$	0.08		$	—		$	(0.28	)	$	0.66		$	(0.01	)	$	(3.10	)
Comprehensive     income (loss)	$	145,048		$	(1,450	)	$	(681,428	)	$	21,220		$	206		$	(68,536	)	$	166,268		$	(1,244	)	$	(749,964	)

The effects of this error on our previously reported 2020 quarterly balance sheets are as follows (in thousands):

	Originally Reported									Adjustments									Restated
		Q1			Q2			Q3			Q1			Q2			Q3			Q1			Q2			Q3
Total current assets	$	467,117		$	331,839		$	209,147		$	—		$	—		$	—		$	467,117		$	331,839		$	209,147
Total non-current    assets	$	6,122,521		$	6,120,372		$	5,803,751		$	—		$	—		$	—		$	6,122,521		$	6,120,372		$	5,803,751
Total current liabilities	$	490,125		$	530,253		$	630,120		$	—		$	—		$	—		$	490,125		$	530,253		$	630,120
Total non-current    liabilities	$	3,624,925		$	3,586,142		$	3,720,274		$	(21,220)		$	(206)		$	68,536		$	3,603,705		$	3,585,936		$	3,788,810
Deferred tax liabilities	$	210,803		$	167,548		$	62,319		$	(21,220	)	$	(206	)	$	68,536		$	189,583		$	167,342		$	130,855
Total liabilities	$	4,115,050		$	4,116,395		$	4,350,394		$	(21,220	)	$	(206	)	$	68,536		$	4,093,830		$	4,116,189		$	4,418,930
Retained deficit	$	(3,161,859	)	$	(3,308,502	)	$	(3,988,550	)	$	21,220		$	206		$	(68,536	)	$	(3,140,639	)	$	(3,308,296	)	$	(4,057,086	)
Total stockholders’    equity	$	2,474,588		$	2,335,816		$	1,662,504		$	21,220		$	206		$	(68,536	)	$	2,495,808		$	2,336,022		$	1,593,968
Total liabilities and    stockholders’ equity	$	6,589,638		$	6,452,211		$	6,012,898		$	—		$	—		$	—		$	6,589,638		$	6,452,211		$	6,012,898

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Extractive Industries [Abstract]

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization ^(a)

	December 31,
	2020			2019			2018
	(in thousands)
Natural gas and oil properties:
Properties subject to depletion	$	8,891,348		$	9,345,557		$	10,974,929
Unproved properties		859,766			868,180			2,110,277
Total		9,751,114			10,213,737			13,085,206
Accumulated depreciation, depletion and amortization		(4,064,305	)		(4,172,702	)		(4,062,021	)
Net capitalized costs	$	5,686,809		$	6,041,035		$	9,023,185

^{(a) Includes capitalized asset retirement costs and the associated accumulated amortization.}

Costs Incurred for Property Acquisition, Exploration and Development

Costs Incurred for Property Acquisition, Exploration and Development ^(a)

	December 31,
	2020		2019		2018
	(in thousands)
Acquisitions
Acreage purchases	$	26,166	$	57,324	$	62,390
Oil and gas properties		—		—		1,683
Development		369,093		666,984		834,552
Exploration:
Drilling		7,709		—		1,380
Expense		31,376		35,117		32,196
Stock-based compensation expense		1,279		1,566		1,921
Gas gathering facilities:
Development		3,694		3,583		10,218
Subtotal		439,317		764,574		944,340
Asset retirement obligations		2,610		11,193		28,826
Total costs incurred	$	441,927	$	775,767	$	973,166

^{(a) Includes cost incurred whether capitalized or expensed.}

Proved Developed and Undeveloped Reserves

	Natural Gas			NGLs			Crude Oil and Condensate			Natural Gas Equivalents
	(Mmcf)			(Mbbls)			(Mbbls)			(Mmcfe) (a)
Proved developed and undeveloped reserves:
Balance, December 31, 2017		10,263,649			763,264			69,854			15,262,361
Revisions		178,595			84,993			7,197			731,735
Extensions, discoveries and additions		2,269,427			128,436			17,309			3,143,898
Property sales		(135,884	)		(16,774	)		(4,276	)		(262,180	)
Production		(548,085	)		(38,325	)		(4,228	)		(803,408	)
Balance, December 31, 2018		12,027,702			921,594			85,856			18,072,406
Revisions		33,122			57,311			(12,320	)		303,068
Extensions, discoveries and additions		959,901			26,505			7,057			1,161,274
Property sales		(327,634	)		(28,324	)		(2,371	)		(511,811	)
Production		(578,114	)		(38,850	)		(3,690	)		(833,354	)
Balance, December 31, 2019		12,114,977			938,236			74,532			18,191,583
Revisions		(789,992	)		42,741			(12,444	)		(608,211	)
Extensions, discoveries and additions		1,007,415			38,298			4,512			1,264,282
Property sales		(609,311	)		(30,317	)		(6,145	)		(828,084	)
Production		(574,529	)		(37,492	)		(2,829	)		(816,456	)
Balance, December 31, 2020		11,148,560			951,466			57,626			17,203,114
Proved developed reserves:
December 31, 2018		6,451,012			512,318			38,658			9,756,870
December 31, 2019		6,486,211			535,007			34,369			9,902,468
December 31, 2020		6,350,057			550,771			22,976			9,792,540
Proved undeveloped reserves:
December 31, 2018		5,576,690			409,276			47,198			8,315,536
December 31, 2019		5,628,766			403,229			40,163			8,289,115
December 31, 2020		4,798,503			400,695			34,650			7,410,574

^(a)  Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

Changes in Proved Undeveloped Reserves

The following details the changes in proved undeveloped reserves for 2020 (Mmcfe):

Beginning proved undeveloped reserves at December 31, 2019	8,289,115
Undeveloped reserves transferred to developed	(1,258,551	)
Revisions (a)	(675,150	)
Sales	(175,274	)
Extension and discoveries	1,230,434
Ending proved undeveloped reserves at December 31, 2020	7,410,574

^(a) Includes 961 Bcfe of proved undeveloped reserves removed and deferred due to the five-year rule which can be included in our future proved reserves as these locations are added back to our five-year development plan.

Standardized Measure of Discounted Future Net Cash Flows

The standardized measure of discounted future net cash flows relating to proved natural gas, NGLs, crude oil and condensate reserves is as follows and excludes cash flows associated with derivatives outstanding at each of the respective reporting dates. Future cash inflows are net of third-party transportation, gathering and compression expense.

	As of December 31,
	2020			2019
	(in thousands)
Future cash inflows	$	35,820,758		$	48,718,733
Future costs:
Production		(23,281,268	)		(23,320,477	)
Development (a)		(2,744,539	)		(3,219,349	)
Future net cash flows before income taxes		9,794,951			22,178,907
Future income tax expense		(1,240,011	)		(4,179,297	)
Total future net cash flows before 10% discount		8,554,940			17,999,610
10% annual discount		(5,708,618	)		(11,371,037	)
Standardized measure of discounted future net cash flows	$	2,846,322		$	6,628,573

^(a) 2020 includes $313.1 million of undiscounted future asset retirement costs estimated as of December 31, 2020, using current estimates of future abandonment costs.

Changes in Discounted Future Net Cash Flows

The following table summarizes changes in the standardized measure of discounted future net cash flows.

	December 31,
	2020			2019			2018
	(in thousands)
Revisions of previous estimates:
Changes in prices and production costs	$	(4,868,371	)	$	(6,560,107	)	$	2,959,488
Revisions in quantities		(345,073	)		(12,741	)		667,763
Changes in future development and abandonment costs		107,899			104,585			(686,632	)
Net change in income taxes		797,816			1,125,639			(1,075,867	)
Accretion of discount		756,083			1,317,349			814,725
Additions to proved reserves from extensions, discoveries and improved recovery		280,441			552,710			2,543,296
Natural gas, NGLs and oil sales, net of production costs		(402,450	)		(881,883	)		(1,547,580	)
Actual development costs incurred during the period		384,530			676,520			851,188
Sales of reserves in place		(394,125	)		(688,937	)		(226,953	)
Timing and other		(99,001	)		(120,156	)		(349,048	)
Net change for the year		(3,782,251	)		(4,487,021	)		3,950,380
Beginning of year		6,628,573			11,115,594			7,165,214
End of year	$	2,846,322		$	6,628,573		$	11,115,594

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Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
		Dec. 31, 2020 USD ($) Counterparty Customer	Dec. 31, 2019 USD ($) Customer	Dec. 31, 2018 USD ($) Customer
Summary Of Significant Accounting Policies [Line Items]
Net brokered margin gain (loss)		$ (14,200,000)	$ (14,200,000)	$ (16,300,000)
Allowance for doubtful accounts on accounts receivable		3,004,000	8,784,000
Bad debt (income) expense		400,000	4,341,000	(1,000,000)
Net book value of unproved properties	[1]	859,766,000	868,180,000	2,110,277,000
Abandonment and impairment of unproved properties		19,334,000	1,235,342,000	514,994,000
Depreciation expense		$ 2,600,000	5,000,000.0	$ 6,000,000.0
Maximum amount term for short term leases		1 year
Marketable securities held in deferred compensation plans		$ 63,900,000	62,000,000.0
Other investments including surface acreage		$ 11,900,000	$ 9,600,000
Number of customers accounted more than 10% of total oil and gas revenues | Customer		0	1	1
Number of counterparties | Counterparty		5
Number of financial institutions included in counter parties | Counterparty		20
Number of counterparties amount payable | Counterparty		3
Number of counterparties amount receivable | Counterparty		2
Counterparties not in Facility
Summary Of Significant Accounting Policies [Line Items]
Net derivative liability		$ 4,500,000
Counterparties in a Liability position
Summary Of Significant Accounting Policies [Line Items]
Net derivative liability		4,500,000
Counterparties in a Receivable position
Summary Of Significant Accounting Policies [Line Items]
Derivative amount receivable		$ 5,200,000
Maximum
Summary Of Significant Accounting Policies [Line Items]
Lessee, operating lease, contract term		1 month
Other property and equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful life of assets		3 years
Other property and equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful life of assets		10 years
North Louisiana
Summary Of Significant Accounting Policies [Line Items]
Abandonment and impairment of unproved properties			$ 1,200,000,000

[1] Includes capitalized asset retirement costs and the associated accumulated amortization.

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Dispositions - Additional Information (Detail)		1 Months Ended	3 Months Ended						12 Months Ended
	Aug. 14, 2020 USD ($)	Aug. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2019 USD ($) a	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets									$ 110,791,000	$ (30,256,000)	$ (10,666,000)
Proceeds from disposal of assets									246,127,000	784,937,000	324,549,000
Estimated fair value of contingent consideration									74,602,000	152,692,000
Miscellaneous Proved, Unproved Properties and Surface Acreage
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets									2,200,000	337,000	(448,000)
Proceeds from sale of oil and gas properties									127,000	$ 938,000	$ 1,200,000
Northern Oklahoma
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets								$ (39,000)
Proceeds from sale of oil and gas properties								$ 23,300,000
Contingent Consideration
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Estimated fair value of contingent consideration									15,960,000
North Louisiana
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets									(9,500,000)
Fair value of total consideration for sale	$ 260,000,000.0
Proceeds from disposal of assets	245,000,000.0
Divestiture fee obligation	479,800,000
Unrealized loss for novated derivatives	12,100,000
North Louisiana | Contingent Consideration
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Estimated fair value of contingent consideration	$ 15,000,000.0
North Louisiana | Contingent Consideration | Maximum
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Potential Contractual Payout Of Contingent Consideration		$ 90,000,000	$ 90,000,000.0						$ 90,000,000.0
Northwest Pennsylvania
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets				$ 122,500,000
Proceeds from sale of oil and gas properties				$ 1,000,000.0
Pennsylvania
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
(Loss) gain on the sale of assets					$ (36,500,000)	$ 5,900,000	$ (10,200,000)
Proceeds from sale of oil and gas properties					$ 750,000,000.0	$ 34,000,000.0	$ 300,000,000.0
Percentage of royalty disposed					2.50%		1.00%				1.00%
Pennsylvania | Natural Gas and Oil Properties
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Number of acres sold | a						20,000

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Revenues from Contracts with Customers - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) Stream	Dec. 31, 2019 USD ($)
Disaggregation of Revenue [Line Items]
Number of revenue streams | Stream	3
Revenue Contract with Customer
Disaggregation of Revenue [Line Items]
Accounts receivable | $	$ 237.8	$ 237.0

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Revenues from Contracts with Customers - Disaggregation of Revenue by Identified Revenue Stream (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Total Revenue	$ 1,780,986	$ 2,600,934	$ 3,333,837
Natural Gas, NGLs and Oil Sales
Disaggregation of Revenue [Line Items]
Total Revenue	1,607,713	2,255,425	2,851,077
Natural Gas, NGLs and Oil Sales | Natural gas sales
Disaggregation of Revenue [Line Items]
Total Revenue	943,740	1,388,838	1,663,832
Natural Gas, NGLs and Oil Sales | NGLs sales
Disaggregation of Revenue [Line Items]
Total Revenue	578,454	681,134	931,360
Natural Gas, NGLs and Oil Sales | Oil sales
Disaggregation of Revenue [Line Items]
Total Revenue	85,519	185,453	255,885
Brokered Natural Gas, Marketing and Other
Disaggregation of Revenue [Line Items]
Total Revenue	173,273	345,509	482,760
Brokered Natural Gas, Marketing and Other | Natural gas sales
Disaggregation of Revenue [Line Items]
Total Revenue	160,122	332,006	459,634
Brokered Natural Gas, Marketing and Other | NGLs sales
Disaggregation of Revenue [Line Items]
Total Revenue	3,776	1,661	9,017
Brokered Natural Gas, Marketing and Other | Other marketing revenue
Disaggregation of Revenue [Line Items]
Total Revenue	$ 9,375	$ 11,842	$ 14,109

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Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Income tax benefit	$ (36,509,000)	$ (22,266,000)	$ 28,998,000	$ 6,732,000	$ (29,777,000)	$ (25,552,000)	$ (500,291,000)	$ (30,489,000)
Deferred tax liabilities						135,267,000	160,196,000
Accrued interest or penalties related to tax amounts						$ 0
Minimum
Income Taxes [Line Items]
Period during which net operating loss carryforwards and alternative minimum tax expire						Dec. 31, 2021
Maximum
Income Taxes [Line Items]
Period during which net operating loss carryforwards and alternative minimum tax expire						Dec. 31, 2038
State
Income Taxes [Line Items]
Valuation allowances						$ 226,520,000	158,296,000
Federal
Income Taxes [Line Items]
Valuation allowances						152,499,000	32,530,000
Federal and State
Income Taxes [Line Items]
Net operating loss carryforwards						3,200,000,000
Net operating loss carryforward subject to expiration							$ 1,400,000,000
Net operating loss carryforward not subject to expiration						1,800,000,000
Pennsylvania
Income Taxes [Line Items]
Net operating loss carryforwards						$ 935,000,000.0
Pennsylvania | Minimum
Income Taxes [Line Items]
Period during which net operating loss carryforwards and alternative minimum tax expire						Dec. 31, 2027
Pennsylvania | Maximum
Income Taxes [Line Items]
Period during which net operating loss carryforwards and alternative minimum tax expire						Dec. 31, 2040
Louisiana
Income Taxes [Line Items]
Net operating loss carryforwards						$ 1,400,000,000
Louisiana | Minimum
Income Taxes [Line Items]
Period during which net operating loss carryforwards and alternative minimum tax expire						Dec. 31, 2034
Louisiana | Maximum
Income Taxes [Line Items]
Period during which net operating loss carryforwards and alternative minimum tax expire						Dec. 31, 2040

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Income Taxes - Reconciliation Between Statutory Federal Income Tax Rate and Effective Income Tax (Detail)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Effective Income Tax Rate Continuing Operations Tax Rate Reconciliation [Abstract]
Federal statutory tax rate	21.00%	21.00%	21.00%
State, net of federal benefit	5.20%	3.80%	(0.30%)
State rate and law change	4.30%	1.80%	0.90%
Valuation allowances	(26.30%)	(3.80%)	(0.40%)
Non-deductible equity compensation	(0.70%)	(0.20%)	(0.10%)
Goodwill impairment	0.00%	0.00%	(19.40%)
Consolidated effective tax rate	3.50%	22.60%	1.70%

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Income Taxes - Income Tax (Benefit) Expense Attributable to (Loss) Income Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Components Of Income Tax Expense Benefit Continuing Operations [Abstract]
U.S. federal, Current						$ (366)	$ 0	$ 0
U.S. state and local, Current						(157)	6,147	0
Total, Current		$ (3)	$ (363)	$ (366)	$ (366)	(523)	6,147	0
U.S. federal, Deferred						(24,489)	(434,585)	(25,322)
U.S. state and local, Deferred						(540)	(71,853)	(5,167)
Total, Deferred	$ (36,509)	(22,263)	29,361	7,098	(29,411)	(25,029)	(506,438)	(30,489)
U.S. federal, Total						(24,855)	(434,585)	(25,322)
U.S. state and local, Total						(697)	(65,706)	(5,167)
Total (benefit) expense for income taxes	$ (36,509)	$ (22,266)	$ 28,998	$ 6,732	$ (29,777)	$ (25,552)	$ (500,291)	$ (30,489)

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Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Net operating loss carryforward	$ 879,339	$ 581,324
Divestiture contract obligation	132,352	0
Deferred compensation	16,635	16,815
Equity compensation	5,445	7,188
Asset retirement obligation	18,923	60,064
Interest expense carryover	15,757	18,035
Lease deferred tax assets	16,070	16,450
Cumulative mark-to-market loss	2,607	0
Other	12,082	11,072
Valuation allowances:
Total deferred tax assets	720,191	520,122
Deferred tax liabilities:
Depreciation and depletion	(839,869)	(639,581)
Cumulative mark-to-market gain	0	(25,957)
Lease deferred tax liabilities	(15,058)	(14,780)
Other	(531)	0
Total deferred tax liabilities	(855,458)	(680,318)
Net deferred tax liability	(135,267)	(160,196)
Federal
Valuation allowances:
Valuation allowances	(152,499)	(32,530)
State, net of federal benefit
Valuation allowances:
Valuation allowances	$ (226,520)	$ (158,296)

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Income Taxes - Changes in Deferred Tax Asset Valuation Allowances (Detail) - Valuation Allowance of Deferred Tax Assets - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Taxes [Line Items]
Balance at the beginning of the year	$ (190,826)	$ (120,347)	$ (125,134)
Charged to provision for income taxes:
Non-recoverable deferred tax assets	(7,433)	(28,208)	0
Other state valuation allowances	(11,321)	(31,214)	16,380
Other federal valuation allowances	244	346	494
Other	1,208	527	123
Balance at the end of the year	(379,019)	(190,826)	(120,347)
State
Charged to provision for income taxes:
Net operating loss carryforwards	(56,903)	(25,710)	(23,926)
Federal
Charged to provision for income taxes:
Net operating loss carryforwards	$ (113,988)	$ 13,780	$ 11,716

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Net Income (Loss) Per Common Share - Computations of Basic and Diluted Income (Loss) Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
		Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share Reconciliation [Abstract]
Net loss		$ (748,790)	$ (167,583)	$ 166,195	$ (1,388)	$ (750,178)	$ (711,777)	$ (1,716,297)	$ (1,746,481)
Participating basic earnings	[1]							(251)	(245)
Basic net loss attributed to common stockholders							(711,777)	(1,716,548)	(1,746,726)
Reallocation of participating earnings	[1]						0	0	0
Diluted net loss attributed to common stockholders							$ (711,777)	$ (1,716,548)	$ (1,746,726)
Net loss per common share:
Basic		$ (3.12)	$ (0.70)	$ 0.67	$ (0.01)	$ (3.10)	$ (2.95)	$ (6.92)	$ (7.10)
Diluted		$ (3.12)	$ (0.70)	$ 0.66	$ (0.01)	$ (3.10)	$ (2.95)	$ (6.92)	$ (7.10)

[1] Restricted stock Liability Awards represent participating securities because they participate in nonforfeitable dividends or distributions with common equity owners. Income allocable to participating securities represents the distributed and undistributed earnings attributable to the participating securities. Participating securities, however, do not participate in undistributed net losses.

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Net Income (Loss) Per Common Share - Basic Weighted Average Common Shares Outstanding to Diluted Weighted Average Common Shares Outstanding (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Denominator:
Weighted average common shares outstanding – basic and diluted	241,373	247,970	246,171

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Net Income (Loss) Per Common Share - Additional Information (Detail) - shares shares in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restricted Stock Liability Awards
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Stock excluded from earning per share calculation	5.5	3.1	3.1

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Indebtedness - Additional Information (Detail)	36 Months Ended
	Dec. 31, 2020 USD ($)
Debt Disclosure [Abstract]
Interest capitalized during the period	$ 0

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Indebtedness - Debt Outstanding (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Senior notes	$ 2,376,438	$ 2,675,763
Senior subordinated notes	37,338	48,980
Total debt	3,115,776	3,201,743
Unamortized premium	456	3,013
Unamortized debt issuance costs	(30,625)	(31,819)
Total debt (net of debt issuance costs)	3,085,607	3,172,937
2.2% Bank Debt | Notes Payable to Banks
Debt Instrument [Line Items]
Bank debt (2.2%)	702,000	477,000
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Senior notes	750,000	750,000
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	169,589	511,886
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Senior notes	532,335	741,531
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Senior notes	25,496	374,139
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	48,528	297,617
9.25% Senior Notes Due 2026
Debt Instrument [Line Items]
Senior notes	850,000	0
Other Senior Notes Due 2022
Debt Instrument [Line Items]
Senior notes	490	590
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Senior subordinated notes	9,730	19,054
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Senior subordinated notes	7,712	7,712
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Senior subordinated notes	$ 19,896	$ 22,214

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Indebtedness - Debt Outstanding (Parenthetical) (Detail)	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019
4.875% Senior Notes Due 2025
Debt Instrument [Line Items]
Interest rate on notes	4.875%		4.875%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%	5.00%	5.00%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%	5.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%	5.75%	5.75%
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.875%	5.875%	5.875%	5.875%
9.25% Senior Notes Due 2026
Debt Instrument [Line Items]
Interest rate on notes	9.25%		9.25%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Interest rate on notes	5.00%	5.00%	5.00%
5.00% Senior Subordinated Notes Due 2023
Debt Instrument [Line Items]
Interest rate on notes	5.00%		5.00%
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes	5.75%	5.75%	5.75%
Notes Payable to Banks
Debt Instrument [Line Items]
Bank debt percentage	2.20%		2.20%

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Indebtedness - Bank Debt - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020 USD ($) CommercialBank	Dec. 31, 2019 USD ($)	Dec. 31, 2018	Dec. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)
Debt Instrument [Line Items]
Bank debt	$ 693,123,000	$ 464,319,000
Bank Credit Facility
Debt Instrument [Line Items]
Bank credit facility, maximum amount	4,000,000,000.0
Bank credit facility, borrowing base	$ 3,000,000,000.0				$ 3,000,000,000.0
Bank commitments				$ 2,400,000,000	$ 2,400,000,000
Number of commercial banks included in current bank group | CommercialBank	26
Percentage holding of commercial banks, Maximum	7.00%
Maturity date of loan	Apr. 13, 2023
Weighted average interest rate on the bank credit facility	2.60%	3.80%	3.70%
Annual rate of commitment fee paid on the undrawn balance	0.30%
Increase in the applicable margin basis points on drawn facility balances	50.00%
Bank debt	$ 702,000,000.0
Undrawn letters of credit	334,600,000
Borrowing capacity available under the commitment amount	$ 1,400,000,000
Bank Credit Facility | Alternate Base Rate
Debt Instrument [Line Items]
Interest rate margin	1.00%
Bank Credit Facility | LIBOR Rate
Debt Instrument [Line Items]
Interest rate margin	2.00%
Bank Credit Facility | Minimum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance	0.30%
Bank Credit Facility | Minimum | Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	0.25%
Bank Credit Facility | Minimum | LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%
Bank Credit Facility | Maximum
Debt Instrument [Line Items]
Annual rate of commitment fee paid on the undrawn balance	0.375%
Bank Credit Facility | Maximum | Alternate Base Rate
Debt Instrument [Line Items]
Base rate on debt	1.25%
Bank Credit Facility | Maximum | LIBOR Rate
Debt Instrument [Line Items]
Base rate on debt	2.25%

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Indebtedness - New Senior Notes - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Sep. 30, 2020	Sep. 30, 2019
Debt Instrument [Line Items]
Unamortized debt issuance costs			$ 31,819	$ 30,625
9.25% Senior Notes Due 2026
Debt Instrument [Line Items]
Aggregate principal amount		$ 550,000			$ 300,000
Interest rate on notes		9.25%	9.25%	9.25%
Debt instrument maturity year		2026
Net proceeds after underwriting expenses		$ 541,400			295,000
Unamortized debt issuance costs		8,600			$ 5,000
Maximum redemption price of notes as percentage of principal amount			100.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Interest rate on notes			5.75%	5.75%	5.75%	5.75%
Repayments of senior notes		$ 500,000
8.25% Senior Notes Due 2029 | Subsequent Event
Debt Instrument [Line Items]
Aggregate principal amount	$ 600,000
Interest rate on notes	8.25%
Debt instrument maturity year	2029
Net proceeds after underwriting expenses	$ 590,800
Unamortized debt issuance costs	$ 9,200
Maximum redemption price of notes as percentage of principal amount	100.00%

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Indebtedness - Early Extinguishment of Debt - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended				12 Months Ended
	Sep. 30, 2020	Jan. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Repayment of notes by early cash tender premium amount	$ 5,300	$ 15,100	$ 5,300
Early cash tender offer period	10 days	10 days
Gain (Loss) on early extinguishment of debt			39,600			$ 5,400	$ 14,068	$ 5,415	$ 0
5.75% Senior Notes Due 2021 and 5.0% senior notes due 2022 and 5.875% Senior Notes Due 2022 and 5.75% senior subordinated notes due 2021
Debt Instrument [Line Items]
Cash tender principal amount	$ 500,000
Gain (Loss) on early extinguishment of debt			(8,000)
Five Point Seven Five Percent Senior Notes Due Two Thousand And Twenty One And Five Point Eight Seven Five Percent Senior Notes Due Two Thousand Twenty Two
Debt Instrument [Line Items]
Cash tender principal amount		$ 500,000
Gain (Loss) on early extinguishment of debt				$ (17,500)
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 1,100				$ 1,100
Interest rate on notes	5.75%		5.75%		5.75%		5.75%	5.75%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 1,000				$ 1,000
Interest rate on notes	5.00%		5.00%		5.00%		5.00%	5.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 12,500		$ 101,800	$ 101,800	$ 12,500
Interest rate on notes	5.75%		5.75%		5.75%	5.75%	5.75%	5.75%
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 8,100		$ 31,600	$ 31,600	$ 8,100
Interest rate on notes	5.875%		5.875%		5.875%	5.875%	5.875%	5.875%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 51,300		$ 68,100	$ 68,100	$ 51,300
Interest rate on notes	5.00%		5.00%		5.00%	5.00%	5.00%	5.00%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 86,900				$ 86,900
Interest rate on notes	5.00%		5.00%		5.00%		5.00%	5.00%

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Indebtedness - Senior Subordinated Notes - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2020
Subordinated Debt
Debt Instrument [Line Items]
Maximum redemption price of notes as percentage of principal amount	101.00%

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Indebtedness - Guarantees and Debt Covenants and Maturity - Additional Information (Detail) - Bank Credit Facility	12 Months Ended
	Dec. 31, 2020
Debt Instrument [Line Items]
Debt instrument, covenant compliance	Our bank credit facility contains negative covenants that limit our ability, among other things, to pay cash dividends, incur additional indebtedness, sell assets, enter into certain hedging contracts, change the nature of our business or operations, merge, consolidate, or make certain investments. In addition, we are required to maintain a ratio of EBITDAX (as defined in the credit agreement) to cash interest expense of equal to or greater than 2.5 and a current ratio (as defined in the credit agreement) of no less than 1.0. In addition, the ratio of the present value of proved reserves (as defined in the credit agreement) to total debt must be equal to or greater than 1.5 until Range has two investment grade ratings. We were in compliance with applicable covenants under the bank credit facility at December 31, 2020.
Minimum
Debt Instrument [Line Items]
Ratio of debt to EBITDAX	250.00%
Current ratio	100.00%
Present value of proved reserves to total debt	150.00%

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Indebtedness - Schedule for Long-Term Debt Outstanding (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Debt Disclosure [Abstract]
2021	$ 45,392
2022	228,337
2023	1,242,047
2024	0
2025	750,000
Thereafter	850,000
Total debt	$ 3,115,776

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Asset Retirement Obligations - Asset Retirement Obligations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Asset Retirement Obligation [Abstract]
Beginning of period	$ 251,076	$ 312,754
Liabilities incurred	1,483	4,063
Acquisitions	123	0
Liabilities settled	(4,634)	(5,953)
Disposition of wells	(176,748)	(82,576)
Accretion expense	7,518	15,658
Change in estimate	1,004	7,130
End of period	79,822	251,076
Less current portion	(6,689)	(2,393)
Long-term asset retirement obligations	$ 73,133	$ 248,683

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Derivative Activities - Additional Information (Detail)	1 Months Ended	3 Months Ended	12 Months Ended
	Aug. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) MMBTU	Dec. 31, 2021 t_per_M	Jun. 30, 2021 t_per_M
Contingent Consideration
Derivative [Line Items]
Derivative assets liabilities at fair value net			$ 16,000,000.0
North Louisiana | Maximum | Contingent Consideration
Derivative [Line Items]
Potential Contractual Payout Of Contingent Consideration	$ 90,000,000	$ 90,000,000.0	90,000,000.0
Derivatives Excluding Basis Swaps And Freight Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net			18,000,000.0
Commodity | Natural Gas Basis Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net			$ 3,700,000
Volume Hedged | MMBTU			180,510,000
Commodity | Propane Spread Swaps
Derivative [Line Items]
Derivative assets liabilities at fair value net			$ 794,000,000
Freight | Swap | Fair Value, Inputs, Level 2
Derivative [Line Items]
Derivative assets liabilities at fair value net			$ 1,100,000
Freight | Swap | Contracts Settle in 2021 | Fair Value, Inputs, Level 2 | Forecast
Derivative [Line Items]
Volume Hedged | t_per_M				10,000	5,000

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Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Detail)	Dec. 31, 2020 MMBTU / d bbl / d $ / MMBTU $ / bbl $ / gal
2021 Commodity Contract | Swap | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	550,000
Weighted Average Hedge Price, Swap | $ / MMBTU	2.77	[1]
2021 Commodity Contract | Swap | Crude Oil
Derivative [Line Items]
Volume Hedged | bbl / d	3,479
Weighted Average Hedge Price, Swap	46.11
2021 Commodity Contract | Three Way Collars | Natural Gas
Derivative [Line Items]
Volume Hedged | bbl / d	240,000
Weighted average price of hedge, Floor | $ / bbl	2.33	[1]
Weighted average price of hedge, Ceiling	2.60	[1]
Weighted Average Hedge Price, Sold Put | $ / bbl	1.99	[1]
January – October 2021 Commodity Contract | Collars | Natural Gas
Derivative [Line Items]
Volume Hedged | MMBTU / d	342,237
Weighted average price of hedge, Floor | $ / MMBTU	2.51	[1]
Weighted average price of hedge, Ceiling | $ / bbl	3.00	[1]
January – June 2021 Commodity Contract | Swap | N G Ls C Three Propane
Derivative [Line Items]
Volume Hedged | bbl / d	6,972
Weighted Average Hedge Price, Swap	0.55
January – June 2021 Commodity Contract | Collars | N G Ls C Three Propane
Derivative [Line Items]
Volume Hedged | bbl / d	5,000
Weighted average price of hedge, Floor	0.50
Weighted average price of hedge, Ceiling	0.60
January To March Two Thousand Twenty One Commodity Contract | Swap | N G Ls N C Four Normal Butane
Derivative [Line Items]
Volume Hedged | bbl / d	2,000
Weighted Average Hedge Price, Swap	0.71
January To March Two Thousand Twenty One Commodity Contract | Collars | N G Ls N C Four Normal Butane
Derivative [Line Items]
Volume Hedged | bbl / d	1,000
Weighted average price of hedge, Floor	0.60
Weighted average price of hedge, Ceiling	0.70
January To March Two Thousand Twenty One Commodity Contract | Calls | N G Ls C Five Natural Gasoline
Derivative [Line Items]
Volume Hedged | bbl / d	1,000
Weighted Average Hedge Price, Swap	0.95
January To March 2021 Commodity Contract | Swap | N G Ls C Five Natural Gasoline
Derivative [Line Items]
Volume Hedged | bbl / d	2,821
Weighted Average Hedge Price, Swap	0.92

[1] We also sold natural gas call swaptions of 280,000 Mmbtu/day for 2022 at a weighted average price of $2.81 per Mmbtu.

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Derivative Activities - Derivative Volumes Hedged and Average Hedge Prices (Parenthetical) (Detail) - 2022 Commodity Contract - Call Swaptions - Natural Gas	Dec. 31, 2020 MMBTU / d $ / MMBTU
Derivative [Line Items]
Volume Hedged | MMBTU / d	280,000
Weighted average price of hedge | $ / MMBTU	2.81

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Derivative Activities - Schedule of Additional Information Related to Master Netting Arrangements with Derivative Counterparties (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 74,602	$ 152,692
Gross Amounts Offset in the Balance Sheet	(34,590)	(15,138)
Net Amounts of Assets Presented in the Balance Sheet	40,012	137,554
Gross Amounts of Recognized (Liabilities)	(71,043)	(29,206)
Gross Amounts Offset in the Balance Sheet	34,590	15,138
Net Amounts of (Liabilities) Presented in the Balance Sheet	(36,453)	(14,068)
Contingent Consideration
Derivative [Line Items]
Gross Amounts of Recognized Assets	15,960
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	15,960
Commodity | Swap | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	33,559	134,364
Gross Amounts Offset in the Balance Sheet	(16,821)	(2,913)
Net Amounts of Assets Presented in the Balance Sheet	16,738	131,451
Gross Amounts of Recognized (Liabilities)	(10,120)	(1,657)
Gross Amounts Offset in the Balance Sheet	16,821	2,913
Net Amounts of (Liabilities) Presented in the Balance Sheet	6,701	1,256
Commodity | Swap | Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets	2,465	3,893
Gross Amounts Offset in the Balance Sheet	(829)	(4,794)
Net Amounts of Assets Presented in the Balance Sheet	1,636	(901)
Gross Amounts of Recognized (Liabilities)	(5,471)	(4,814)
Gross Amounts Offset in the Balance Sheet	829	4,794
Net Amounts of (Liabilities) Presented in the Balance Sheet	(4,642)	(20)
Commodity | Swap | N G Ls C Three Propane
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(8,243)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(8,243)
Commodity | Swap | N G Ls C Five Natural Gasoline
Derivative [Line Items]
Gross Amounts of Recognized Assets		60
Gross Amounts Offset in the Balance Sheet		(127)
Net Amounts of Assets Presented in the Balance Sheet		(67)
Gross Amounts of Recognized (Liabilities)	(4,897)	(127)
Gross Amounts Offset in the Balance Sheet	0	127
Net Amounts of (Liabilities) Presented in the Balance Sheet	(4,897)
Commodity | Swap | N G Ls N C Four Normal Butane
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(651)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(651)
Commodity | Swap | N G Ls C Four Butane
Derivative [Line Items]
Gross Amounts of Recognized Assets		167
Gross Amounts Offset in the Balance Sheet		0
Net Amounts of Assets Presented in the Balance Sheet		167
Commodity | Collars | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	7,016
Gross Amounts Offset in the Balance Sheet	(2,329)
Net Amounts of Assets Presented in the Balance Sheet	4,687
Gross Amounts of Recognized (Liabilities)	0
Gross Amounts Offset in the Balance Sheet	2,329
Net Amounts of (Liabilities) Presented in the Balance Sheet	2,329
Commodity | Collars | N G Ls C Three Propane
Derivative [Line Items]
Gross Amounts of Recognized Assets	0
Gross Amounts Offset in the Balance Sheet	(107)
Net Amounts of Assets Presented in the Balance Sheet	(107)
Gross Amounts of Recognized (Liabilities)	(3,086)
Gross Amounts Offset in the Balance Sheet	107
Net Amounts of (Liabilities) Presented in the Balance Sheet	(2,979)
Commodity | Collars | N G Ls N C Four Normal Butane
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(401)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(401)
Commodity | Three Way Collars | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	535
Gross Amounts Offset in the Balance Sheet	(6,139)
Net Amounts of Assets Presented in the Balance Sheet	(5,604)
Gross Amounts of Recognized (Liabilities)	(18,353)
Gross Amounts Offset in the Balance Sheet	6,139
Net Amounts of (Liabilities) Presented in the Balance Sheet	(12,214)
Commodity | Basis Swaps | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets	7,894	10,766
Gross Amounts Offset in the Balance Sheet	(3,502)	(1,092)
Net Amounts of Assets Presented in the Balance Sheet	4,392	9,674
Gross Amounts of Recognized (Liabilities)	(4,197)	(1,371)
Gross Amounts Offset in the Balance Sheet	3,502	1,092
Net Amounts of (Liabilities) Presented in the Balance Sheet	(695)	(279)
Commodity | Spread Swaps | N G Ls C Three Propane
Derivative [Line Items]
Gross Amounts of Recognized Assets	4,863	1,913
Gross Amounts Offset in the Balance Sheet	(4,863)	(1,913)
Net Amounts of Assets Presented in the Balance Sheet	0	0
Gross Amounts of Recognized (Liabilities)	(4,069)	(16,040)
Gross Amounts Offset in the Balance Sheet	4,863	1,913
Net Amounts of (Liabilities) Presented in the Balance Sheet	794	(14,127)
Commodity | Swaption | Natural Gas
Derivative [Line Items]
Gross Amounts of Recognized Assets		0
Gross Amounts Offset in the Balance Sheet		(1,325)
Net Amounts of Assets Presented in the Balance Sheet		(1,325)
Gross Amounts of Recognized (Liabilities)	(9,803)	(2,594)
Gross Amounts Offset in the Balance Sheet	0	1,325
Net Amounts of (Liabilities) Presented in the Balance Sheet	(9,803)	(1,269)
Commodity | Swaption | Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets		0
Gross Amounts Offset in the Balance Sheet		(1,597)
Net Amounts of Assets Presented in the Balance Sheet		(1,597)
Gross Amounts of Recognized (Liabilities)		(2,254)
Gross Amounts Offset in the Balance Sheet		1,597
Net Amounts of (Liabilities) Presented in the Balance Sheet		(657)
Commodity | Calls | Crude Oil
Derivative [Line Items]
Gross Amounts of Recognized Assets		0
Gross Amounts Offset in the Balance Sheet		(349)
Net Amounts of Assets Presented in the Balance Sheet		(349)
Gross Amounts of Recognized (Liabilities)		(349)
Gross Amounts Offset in the Balance Sheet		349
Commodity | Calls | N G Ls C Five Natural Gasoline
Derivative [Line Items]
Gross Amounts of Recognized (Liabilities)	(546)
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of (Liabilities) Presented in the Balance Sheet	(546)
Freight
Derivative [Line Items]
Gross Amounts of Recognized Assets		1,529
Gross Amounts Offset in the Balance Sheet		(1,028)
Net Amounts of Assets Presented in the Balance Sheet		501
Freight | Swap
Derivative [Line Items]
Gross Amounts of Recognized Assets	2,310
Gross Amounts Offset in the Balance Sheet	0
Net Amounts of Assets Presented in the Balance Sheet	2,310
Gross Amounts of Recognized (Liabilities)	(1,206)
Gross Amounts Offset in the Balance Sheet	0	1,028
Net Amounts of (Liabilities) Presented in the Balance Sheet	$ (1,206)	$ 1,028

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Derivative Activities - Effects of Derivatives on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ 187,711	$ 226,681	$ (51,192)
Contingent Consideration
Derivative [Line Items]
Derivative Fair Value Income (Loss)	970	0	0
Swaption
Derivative [Line Items]
Derivative Fair Value Income (Loss)	(4,955)	333	(6,556)
Collars
Derivative [Line Items]
Derivative Fair Value Income (Loss)	3,304	(3,903)	17,583
Three Way Collars
Derivative [Line Items]
Derivative Fair Value Income (Loss)	(16,346)	0	0
Basis Swaps
Derivative [Line Items]
Derivative Fair Value Income (Loss)	48,278	6,661	(1,104)
Calls
Derivative [Line Items]
Derivative Fair Value Income (Loss)	(558)	(349)	(2,653)
Commodity | Swap
Derivative [Line Items]
Derivative Fair Value Income (Loss)	158,248	219,968	(57,950)
Freight | Swap
Derivative [Line Items]
Derivative Fair Value Income (Loss)	$ (1,230)	$ 3,971	$ (512)

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Fair Value Measurements - Fair Value Hierarchy Table for Assets and Liabilities Measured at Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	$ 63,942	$ 62,009
Fair Value, Recurring | Swap
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	6,642	131,886
Fair Value, Recurring | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(546)	(349)
Fair Value, Recurring | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	3,529
Fair Value, Recurring | Three Way Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(17,818)
Fair Value, Recurring | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	4,491	(4,732)
Fair Value, Recurring | Swaption
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(9,803)	(4,848)
Freight | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	1,104	1,529
Fair Value, Inputs, Level 1 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans	63,942	62,009
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Swap
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 1 | Fair Value, Recurring | Swaption
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 1 | Freight | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans		0
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Swap
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	6,642	131,886
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		(349)
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	7,016
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Three Way Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(17,818)
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	4,491	(4,732)
Fair Value, Inputs, Level 2 | Fair Value, Recurring | Swaption
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 2 | Freight | Swap
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	1,100
Fair Value, Inputs, Level 2 | Freight | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	1,104	1,529
Fair Value, Inputs, Level 3 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Trading securities held in the deferred compensation plans		0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Swap
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Calls
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(546)	0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Collars
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(3,487)
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Basis Swaps
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		0
Fair Value, Inputs, Level 3 | Fair Value, Recurring | Swaption
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	(9,803)	(4,848)
Fair Value, Inputs, Level 3 | Freight | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net		$ 0
Contingent Consideration
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	16,000
Contingent Consideration | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	15,960
Contingent Consideration | Fair Value, Inputs, Level 2 | Fair Value, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets liabilities at fair value net	$ 15,960

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Fair Value Measurements - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended				12 Months Ended
	Aug. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2018	Dec. 31, 2030	Dec. 31, 2026	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Aug. 14, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Interest and dividends								$ 713,000	$ 1,100,000	$ 1,100,000
Mark-to-market gain (loss)								$ 6,300,000	8,500,000	(7,900,000)
North Louisiana
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets			$ 77,000,000.0	$ 1,100,000,000
Annual discount rate								12.00%
Divestiture contract obligation											$ 479,800,000
Estimated production volumes, percentage								34.00%
North Louisiana | Sensitivity Of Devemopment Plan
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Divestiture contract obligation								$ 29,000,000.0
North Louisiana | Sensitivity Flat Plant Allocation Percentage | Forecast
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Divestiture contract obligation						$ 17,900,000
Pennsylvania
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, fair value										0
Oklahoma
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets					$ 7,300,000					$ 15,300,000
North Louisiana Assets | Fair Value, Inputs, Level 2 | Leases
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets								2,000,000.0
Houston | Fair Value, Inputs, Level 2 | Leases
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment of proved properties and other assets									$ 2,100,000
Minimum | North Louisiana | Forecast
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimated production volumes, percentage						34.00%
Maximum | North Louisiana | Forecast
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Estimated production volumes, percentage							100.00%
Maximum | North Louisiana | Contingent Consideration
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Potential Contractual Payout Of Contingent Consideration	$ 90,000,000	$ 90,000,000.0						$ 90,000,000.0
Measurement Input, Price Volatility | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Implied volatilities								44.00%
Measurement Input, Price Volatility | Weighted Average | Swaption
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Implied volatilities								24.00%
Measurement Input, Price Volatility | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Implied volatilities								34.00%
Measurement Input, Price Volatility | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Implied volatilities								66.00%
Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Annual discount rate				12.00%					12.00%

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Fair Value Measurements - Reconciliation of the Beginning and Ending Balances for Derivative Instruments Classified as Level 3 in the Fair Value Hierarchy (Detail) - Fair Value, Inputs, Level 3 $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Balance at December 31, 2019	$ (4,848)
Total gains (losses) included in earnings	(13,836)
Settlements, net	2,743
Transfers in and/or out of Level 3	2,105
Balance at December 31, 2020	$ (13,836)

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Fair Value Measurements - Value of Assets Measured at Fair Value on Nonrecurring Basis (Detail) - North Louisiana - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impairment on natural gas and oil properties	$ 77,000	$ 1,100,000
Fair Value, Nonrecurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, fair value		$ 370,500	$ 290,500	$ 370,500	$ 32,516
Impairment on natural gas and oil properties			$ 77,000	$ 1,093,531	$ 22,614

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Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Detail) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019
Assets:
Marketable securities		$ 63,900	$ 62,000
Reported Value Measurement
Assets:
Commodity swaps, collar, options and basis swaps		24,052	137,554
Marketable securities	[1]	63,942	62,009
(Liabilities):
Commodity swaps, collar, options and basis swaps		(36,453)	(14,068)
Bank credit facility	[2]	(702,000)	(477,000)
Deferred compensation plan	[3]	(96,563)	(74,472)
Reported Value Measurement | Contingent Consideration
Assets:
Commodity swaps, collar, options and basis swaps		15,960	0
Estimate of Fair Value Measurement
Assets:
Commodity swaps, collar, options and basis swaps		24,052	137,554
Marketable securities	[1]	63,942	62,009
(Liabilities):
Commodity swaps, collar, options and basis swaps		(36,453)	(14,068)
Bank credit facility	[2]	(702,000)	(477,000)
Deferred compensation plan	[3]	(96,563)	(74,472)
Estimate of Fair Value Measurement | Contingent Consideration
Assets:
Commodity swaps, collar, options and basis swaps		15,960	0
5.75% Senior Notes Due 2021 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(25,496)	(374,139)
5.75% Senior Notes Due 2021 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(25,474)	(375,909)
5.00% Senior Notes Due 2022 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(169,589)	(511,886)
5.00% Senior Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(170,128)	(501,582)
5.875% Senior Notes Due 2022 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(48,528)	(297,617)
5.875% Senior Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(48,471)	(294,757)
Other Senior Notes Due 2022 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(490)	(590)
Other Senior Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(490)	(592)
5.00% Senior Notes Due 2023 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(532,335)	(741,531)
5.00% Senior Notes Due 2023 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(521,699)	(683,291)
4.875% Senior Notes Due 2025 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(750,000)	(750,000)
4.875% Senior Notes Due 2025 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(707,918)	(645,098)
5.75% Senior Subordinated Notes Due 2021 | Reported Value Measurement
(Liabilities):
Subordinated debt	[2]	(19,896)	(22,214)
5.75% Senior Subordinated Notes Due 2021 | Estimate of Fair Value Measurement
(Liabilities):
Subordinated debt	[2]	(19,589)	(21,539)
9.25% Senior Notes Due 2026 | Reported Value Measurement
(Liabilities):
Senior notes	[2]	(850,000)	0
9.25% Senior Notes Due 2026 | Estimate of Fair Value Measurement
(Liabilities):
Senior notes	[2]	(888,208)	0
5.00% Senior Subordinated Notes Due 2022 | Reported Value Measurement
(Liabilities):
Subordinated debt	[2]	(9,730)	(19,054)
5.00% Senior Subordinated Notes Due 2022 | Estimate of Fair Value Measurement
(Liabilities):
Subordinated debt	[2]	(9,247)	(17,011)
5.00% Senior Subordinated Notes Due 2023 | Reported Value Measurement
(Liabilities):
Subordinated debt	[2]	(7,712)	(7,712)
5.00% Senior Subordinated Notes Due 2023 | Estimate of Fair Value Measurement
(Liabilities):
Subordinated debt	[2]	$ (6,604)	$ (7,654)

[1] Marketable securities, which are held in our deferred compensation plans, are actively traded on major exchanges.

[2] The book value of our bank debt approximates fair value because of its floating rate structure. The fair value of our senior notes and our senior subordinated notes is based on end of period market quotes which are Level 2 inputs.

[3] The fair value of our deferred compensation plan is updated at the closing price on the balance sheet date which is a Level 1 input.

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Fair Value Measurements - Carrying Amounts and Fair Values of Financial Instruments (Parenthetical) (Detail)	Dec. 31, 2020	Sep. 30, 2020	Jan. 31, 2020	Dec. 31, 2019	Sep. 30, 2019
5.75% Senior Notes Due 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.75%	5.75%		5.75%	5.75%
5.00% Senior Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%	5.00%		5.00%	5.00%
5.875% Senior Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.875%	5.875%		5.875%	5.875%
5.00% Senior Notes Due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%	5.00%		5.00%
4.875% Senior Notes Due 2025
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	4.875%			4.875%
9.25% Senior Notes Due 2026
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	9.25%		9.25%	9.25%
5.75% Senior Subordinated Notes Due 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.75%	5.75%		5.75%
5.00% Senior Subordinated Notes Due 2022
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%	5.00%		5.00%
5.00% Senior Subordinated Notes Due 2023
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest rate on notes	5.00%			5.00%

XML

Stock-based Compensation Plans - Additional Information (Detail) $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($) Plans	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Active equity-based stock plans | Plans						2
Income tax benefit	$ (36,509)	$ (22,266)	$ 28,998	$ 6,732	$ (29,777)	$ (25,552)	$ (500,291)	$ (30,489)
Equity Compensation
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Income tax benefit						$ 4,300	$ 3,400	$ 3,600

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Stock-based Compensation Plans - Allocation of Stock-Based Compensation by Functional Category (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 38,843	$ 42,382	$ 49,288
Termination Costs
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	2,165	1,971	0
Direct Operating Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,078	1,928	2,109
Brokered Natural Gas and Marketing Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,416	1,856	1,452
Exploration Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	1,279	1,566	1,921
General and Administrative Expense
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation expense	$ 32,905	$ 35,061	$ 43,806

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Stock-based Compensation Plans - Additional Information 1 (Detail)	12 Months Ended
	Dec. 31, 2020 Award shares
Restricted Stock Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Performance Share
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Types of awards available for grant	3
Performance Share | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of share value each unit represents at grant date | shares	1
Performance-based PG-PSUs and RG-PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Types of awards available for grant	2
Performance-based PG-PSUs and RG-PSUs | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	0.00%
Performance-based PG-PSUs and RG-PSUs | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	200.00%
Performance Based TSR - PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Types of awards available for grant	1
Performance Based TSR - PSUs | Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	0.00%
Performance Based TSR - PSUs | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	200.00%

XML

Stock-based Compensation Plans - Additional Information 2 (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation related to Awards	$ 768,000
Weighted average period	1 year
Proceeds from the sales of common stock held by the deferred compensation plan	$ 696,000	$ 667,000	$ 9,747,000
Restricted Stock Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	4,462,711	2,800,000	1,800,000
Vesting period	3 years
Stock-based compensation expense	$ 17,800,000	$ 22,500,000	$ 24,200,000
Unrecognized compensation related to Awards	$ 15,100,000
Weighted average period	1 year 7 months 6 days
Granted, weighted average grant date fair value	$ 3.42
Restricted Stock Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	3,535,093	1,200,000	891,000
Stock-based compensation expense	$ 10,300,000	$ 9,300,000	$ 11,700,000
Unrecognized compensation related to Awards	$ 4,200,000
Weighted average period	1 year 4 months 24 days
Granted, weighted average grant date fair value	$ 3.18	$ 10.16	$ 15.30
Restricted Stock Liability Awards | Non-Employee Directors
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	217,000	183,000	146,000
Restricted Stock Liability Awards | Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted	3,300,000	1,000,000.0	745,000
Vesting period	3 years	3 years	3 years

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Stock-based Compensation Plans - Restricted Stock and Restricted Stock Units Outstanding (Detail) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restricted Stock Equity Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	2,002,239
Granted	4,462,711	2,800,000	1,800,000
Vested	(3,063,652)
Forfeited	(585,438)
Outstanding, Ending Balance	2,815,860	2,002,239
Outstanding, Beginning Balance, weighted average grant date fair value	$ 12.32
Granted, weighted average grant date fair value	3.42
Vested, weighted average grant date fair value	6.93
Forfeited, weighted average grant date fair value	8.03
Outstanding, Ending Balance, weighted average grant date fair value	$ 4.97	$ 12.32
Restricted Stock Liability Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance	411,126
Granted	3,535,093	1,200,000	891,000
Vested	(2,678,013)
Forfeited	(81,570)
Outstanding, Ending Balance	1,186,636	411,126
Outstanding, Beginning Balance, weighted average grant date fair value	$ 10.94
Granted, weighted average grant date fair value	3.18	$ 10.16	$ 15.30
Vested, weighted average grant date fair value	3.94
Forfeited, weighted average grant date fair value	3.02
Outstanding, Ending Balance, weighted average grant date fair value	$ 4.18	$ 10.94

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Stock-based Compensation Plans - Additional Information 3 (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation related to Awards	$ 768,000
Weighted average period	1 year
Performance-based PG-PSUs and RG-PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Stock-based compensation expense	$ 2,700,000	$ 3,800,000	$ 5,400,000
Performance Based TSR - PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Stock-based compensation expense	$ 2,400,000	$ 3,000,000.0	$ 6,300,000
Performance Share
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period	3 years
Unrecognized compensation related to Awards	$ 1,300,000
Weighted average period	1 year 8 months 12 days

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Stock-based Compensation Plans - PG/RG-PSUs Activities (Detail) - Performance-based PG-PSUs and RG-PSUs	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Outstanding, Beginning Balance | shares	881,573
Granted | shares	777,847	[1]
Vested | shares	(101,150)
Forfeited | shares	(459,168)	[2]
Outstanding, Ending Balance | shares	1,099,102
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares	$ 11.70
Granted, weighted average grant date fair value | $ / shares	2.33	[1]
Vested, weighted average grant date fair value | $ / shares	15.32
Forfeited, weighted average grant date fair value | $ / shares	2.33	[2]
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares	$ 5.92

[1] Amounts granted reflect the number of performance units granted; however, the actual payout of shares will be between zero and 200% depending on achievement of specifically identified performance targets.

[2] For RG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the performance metric is not expected to be met and are considered forfeited. For PG-PSU’s tranches granted in 2018, 2019 and 2020 which are set to vest in early 2021, the payout is estimated at 23% with the remainder considered to be forfeited.

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Stock-based Compensation Plans - PG/RG-PSUs Activities (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	23.00%
Minimum | Performance-based PG-PSUs and RG-PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	0.00%
Maximum | Performance-based PG-PSUs and RG-PSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares granted	200.00%

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Stock-based Compensation Plans - Valuation Assumptions for Grant Date Fair Value of Performance Awards (Detail) - Performance Share - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate	1.40%	2.44%	2.42%
Expected annual volatility	65.00%	46.00%	48.00%
Grant date fair value per unit	$ 3.85	$ 11.34	$ 18.51

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Stock-based Compensation Plans - TSR - PSUs Activities (Detail) - Performance Based TSR - PSUs	12 Months Ended
	Dec. 31, 2020 $ / shares shares
Summary of Performance Share Unit Awards outstanding, Number of Units
Outstanding, Beginning Balance | shares	993,452
Granted | shares	610,155	[1]
Vested and issued | shares	(278,184)	[2]
Forfeited | shares	(75,899)
Outstanding, Ending Balance | shares	1,249,524
Summary of Performance Share Unit Awards outstanding, Weighted Average Grant Date Fair Value
Outstanding, Beginning Balance, weighted average grant date fair value | $ / shares	$ 19.00
Granted, weighted average grant date fair value | $ / shares	3.85	[1]
Vested, weighted average grant date fair value | $ / shares	26.12	[2]
Forfeited, weighted average grant date fair value | $ / shares	26.66
Outstanding, Ending Balance, weighted average grant date fair value | $ / shares	$ 9.55

[1] These amounts reflect the number of performance units granted. The actual payout of shares may be between zero and 200% of the performance units granted depending on the total shareholder return ranking compared to our peer companies at the vesting date.

[2] Includes 278,184 TSR-PSUs awards issued related to 2017 performance where the return on our common stock was in the 60^th percentile for the March 2017 grant and the 80^th percentile for the May 2017 grant. The remaining 2017 awards were considered to be forfeited.

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Stock-based Compensation Plans - TSR - PSUs Activities (Parenthetical) (Detail) - Performance Based TSR - PSUs	12 Months Ended
	Dec. 31, 2020 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares vested and issued related to performance period number of common stock	278,184	[1]
March 2017 Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Return on common stock percentile	60.00%
May 2017 Grant
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Return on common stock percentile	80.00%
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares on performance units granted	0.00%
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Potential payout of shares on performance units granted	200.00%

[1] Includes 278,184 TSR-PSUs awards issued related to 2017 performance where the return on our common stock was in the 60^th percentile for the March 2017 grant and the 80^th percentile for the May 2017 grant. The remaining 2017 awards were considered to be forfeited.

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Stock-based Compensation Plans - Additional Information 4 (Detail) - USD ($) $ in Thousands, shares in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Maximum percentage of employees contribution	75.00%
Maximum percentage of employers contribution in cash	6.00%
Employer contribution	$ 5,300	$ 5,400	$ 5,800
Deferred compensation plan vesting period	3 years
Deferred compensation plan	$ (12,541)	$ 15,472	$ 18,631
Shares held in rabbi trust total	6.1	3.2
Vested shares held in rabbi trust	5.0	2.7

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Stock-based Compensation Plans - Summary of Change in Post Retirement Benefit Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Changes in Benefit Obligations in Other Comprehensive Income (Loss):
Net (gain) loss	$ (39)	$ 532	$ (526)
Amortization of prior service cost	(369)	(369)	(369)
Other Post Retirement Benefits
Change in Benefit Obligation:
Benefit obligation at beginning of year	1,957	1,355
Service cost	80	88
Interest cost	50	68
Actuarial (gain) loss	(39)	532
Benefits paid	(95)	(86)
Benefit obligation at end of year	1,953	1,957	$ 1,355
Amounts recognized in the consolidated balance sheet:
Long-term liabilities	1,953	1,957
Components of Net Periodic Post Retirement Benefit Cost:
Service cost	80	88
Interest cost	50	68
Amortization of prior service cost	369	369
Net periodic post retirement costs (recognized in general and administrative expense)	499	525
Other Changes in Benefit Obligations in Other Comprehensive Income (Loss):
Net (gain) loss	(39)	532
Prior service cost	0	0
Amortization of prior service cost	(369)	(369)
Total recognized in other comprehensive (loss) income	(408)	163
Total recognized in net periodic benefit cost and other comprehensive income	$ 91	$ 688

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Stock-based Compensation Plans - Summary of Assumptions Used to Determine Benefit Obligation (Detail) - Other Post Retirement Benefits	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Weighted average assumptions used to determine benefit obligation:
Discount rate	1.90%	2.90%
Assumed weighted average healthcare cost trend rates:
Initial healthcare trend rate	6.50%	6.50%
Ultimate trend rate	4.50%	4.50%
Year ultimate trend rate reached	2024	2023

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Stock-based Compensation Plans - Additional Information 5 (Detail) - Other Post Retirement Benefits	Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payments for the five year period 2021 through 2025	$ 914,000
Expected future benefit payments for the five year period 2026 through 2030	371,000
Estimated prior service cost amortized from accumulated other comprehensive loss into statements of operation in 2021	$ 369,000

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Capital Stock - Additional Information (Detail) - USD ($)	3 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2020	Oct. 31, 2019
Class Of Stock Disclosures [Abstract]
Authorized capital stock	485,000,000.0								485,000,000.0
Common stock, shares authorized	475,000,000								475,000,000
Preferred stock, shares authorized	10,000,000								10,000,000
Common dividends declared per share	$ 0.02	$ 0.02	$ 0.02	$ 0.02	$ 0.02	$ 0.02	$ 0.02	$ 0.02
Maximum
Class Of Stock Disclosures [Abstract]
New stock purchase program, approved amount										$ 100,000,000

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Capital Stock - Schedule of Changes in Number of Common Shares Outstanding (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Class Of Stock [Line Items]
Beginning balance	249,630,803	249,510,022
Restricted stock grants	3,390,358	1,186,290
Treasury shares issued	(8,197,662)	(1,798,468)
Treasury shares repurchased	0	(1,798,468)
Ending balance	246,348,092	249,630,803
Restricted Stock
Class Of Stock [Line Items]
Restricted stock units vested	1,226,473	720,212
Performance Share
Class Of Stock [Line Items]
Performance stock units issued	279,420	12,283
Performance stock dividends	18,700	464

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Capital Stock - Schedule of Change in Treasury Shares (Detail) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Stockholders Equity Note [Abstract]
Beginning balance	1,808,133	9,665
Rabbi trust shares distributed and/or sold	(2,338)	(1,532)
Shares repurchased	8,200,000	1,800,000
Ending balance	10,005,795	1,808,133

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Supplemental Cash Flow Information - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net cash provided from operating activities included:
Income taxes refunded from taxing authorities		$ 343	$ 0	$ 7,521
Interest paid		(168,471)	(189,443)	(207,433)
Non-cash investing and financing activities included:
Asset retirement costs capitalized, net	[1]	2,610	11,193	28,826
Decrease in accrued capital expenditures		$ (23,625)	$ (20,104)	$ (119,021)

[1] Includes cost incurred whether capitalized or expensed.

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Commitments and Contingencies - Schedule of Components of Lease Expense (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Line Items]
Operating lease cost		$ 27,895	$ 15,536
Variable lease expense	[1]	33,849	6,916
Short-term lease expense / costs	[2]	1,866	2,965
Sublease income		(3,199)	(3,496)
Total lease expense		60,411	21,921
Natural Gas and Oil Properties
Commitments And Contingencies Disclosure [Line Items]
Short-term lease expense / costs	[3]	$ 15,984	$ 29,126

[1] Variable lease payments that are not dependent on an index or rate are not included in the lease liability or ROU assets.

[2] Short-term lease expense represents expense related to leases with a contract term of one year or less.

[3] These short-term lease costs are related to leases with a contract term of one year or less and the majority of which are related to drilling rigs and are capitalized as part of natural gas and oil properties on our consolidated balance sheets and may fluctuate based on the number of drilling rigs being utilized.

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Commitments and Contingencies - Supplemental Cash Flow Information Related to Operating Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Abstract]
Cash paid for amounts included in the measurement of lease liabilities	$ 32,030	$ 18,700
ROU assets added in exchange for lease obligations	$ 27,769	$ 24,839

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Commitments and Contingencies - Supplemental Balance Sheet Information Related to Operating Leases (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Line Items]
Operating lease right-of-use assets	$ 63,581	$ 62,053
Operating lease liabilities – long-term	(43,155)	(41,068)
Accrued Liabilities [Member]
Commitments And Contingencies Disclosure [Line Items]
Accrued liabilities – current	$ (24,673)	$ (27,856)

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Commitments and Contingencies - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2020 USD ($) bbl / d Mcf / d	Dec. 31, 2019 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Minimum remaining terms of leases on undeveloped acreage, in years	3 years
Maximum remaining terms of leases on undeveloped acreage, in years	5 years
2021
Commitments And Contingencies Disclosure [Line Items]
Delivery commitments contingent upon pipeline construction or modification per day	3,000
2027
Commitments And Contingencies Disclosure [Line Items]
Delivery commitments contingent upon pipeline construction or modification per day	18,000
2033
Commitments And Contingencies Disclosure [Line Items]
Delivery commitments contingent upon pipeline construction or modification per day	25,000
2034 Through 2035
Commitments And Contingencies Disclosure [Line Items]
Delivery commitments contingent upon pipeline construction or modification per day	10,000
Divestiture Contract Obligation
Commitments And Contingencies Disclosure [Line Items]
Accrued obligations | $	$ 484.1
Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Transportation commitments contingent upon pipeline construction or modification | Mcf / d	25,000
Transportation and gathering commitments contingent upon pipeline construction or modification, term of contract	6 years
Impairment of Proved Property and Other Assets
Commitments And Contingencies Disclosure [Line Items]
Impairment of ROU Asset | $	$ 2.0	$ 2.1

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Commitments and Contingencies - Schedule of Weighted Average Remaining Lease Term and Weighted Average Discount Rate for Operating Leases (Detail)	Dec. 31, 2020	Dec. 31, 2019
Lessee Disclosure [Abstract]
Weighted average remaining lease term	4 years	4 years 7 months 6 days
Weighted average discount rate	6.00%	6.00%

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Commitments and Contingencies - Schedule of Lease Liabilities with Enforceable Contract Terms are Greater Than One year Mature (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Commitments And Contingencies Disclosure [Abstract]
2021	$ 27,850
2022	20,868
2023	6,866
2024	6,468
2025	6,468
Thereafter	8,795
Total lease payments	77,315
Less effects of discounting	(9,487)
Operating lease liabilities	$ 67,828

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Commitments and Contingencies - Schedule of Future Minimum Transportation Fees Due (Detail) $ in Thousands	Dec. 31, 2020 USD ($)	[1]
Disclosure Commitments And Contingencies Schedule Of Future Minimum Transportation And Gathering Fees [Abstract]
2021	$ 837,792
2022	818,569
2023	782,130
2024	766,474
2025	680,757
Thereafter	4,138,532
Transportation, Gathering and Processing Contracts	$ 8,024,254

[1] The amounts in this table represent the gross amounts that we are committed to pay; however, we will record in our financial statements our proportionate share of costs based on our working interest which can vary based on volumes produced.

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Commitments and Contingencies - Schedule of Estimated Settlement of Divestiture Contract Obligation Based On Discounted Value (Detail) $ in Thousands	Dec. 31, 2020 USD ($)
Disclosure Commitments And Contingencies Schedule Of Estimated Settlement Of Divestiture Contract Obligation [Abstract]
2021	$ 92,593
2022	74,942
2023	62,639
2024	54,042
2025	47,704
Thereafter	152,175
Divestiture Contract Obligation	$ 484,095

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Commitments and Contingencies - Future Delivery Commitments (Detail)	12 Months Ended
	Dec. 31, 2020 MMBTU / d bbl / d
2021 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	476,877
2021 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2022 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	477,679
2022 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2023 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	292,423
2023 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2024 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	211,216
2024 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2025 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	170,000
2025 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2026 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	158,301
2026 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2027 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	100,000
2027 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2028 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	100,000
2028 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	35,000
2029 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	100,000
2029 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	20,000
2030 - 2031 | Natural Gas
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | MMBTU / d	0
2030 - 2031 | Ethane and Propane
Commitments And Contingencies Disclosure [Line Items]
Oil and Gas Delivery Commitments and Contracts, Daily Production | bbl / d	20,000

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Exit and Termination Costs - Additional Information (Detail) - USD ($)	3 Months Ended				12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost And Reserve [Line Items]
One-time minimum volume commitment contract payment	$ 28,500,000				$ 28,500,000	$ 0	$ 0
Severance costs					5,909,000	7,535,000	(356,000)
Workforce Reduction
Restructuring Cost And Reserve [Line Items]
Severance costs	3,700,000			$ 2,200,000
North Louisiana
Restructuring Cost And Reserve [Line Items]
Exit cost	479,800,000
Severance costs	$ 2,500,000
Pennsylvania
Restructuring Cost And Reserve [Line Items]
Exit cost					$ 10,900,000	0	$ 0
Pennsylvania | Capacity Releases on Transportation Pipelines
Restructuring Cost And Reserve [Line Items]
Exit cost		$ 10,400,000
Northwest Pennsylvania
Restructuring Cost And Reserve [Line Items]
Severance costs			$ 1,400,000
Northwest Pennsylvania | Non-Core Assets
Restructuring Cost And Reserve [Line Items]
Severance costs						$ 819,000

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Exit and Termination Costs - Summary of Exit and Termination Costs (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost And Reserve [Line Items]
Severance costs		$ 5,909	$ 7,535	$ (356)
One-time minimum volume commitment contract payment	$ 28,500	28,500	0	0
Stock-based compensation and other		2,165	1,971	(17)
Total termination costs		547,409	9,506	(373)
Pennsylvania
Restructuring Cost And Reserve [Line Items]
Exit cost		10,900	0	0
North Louisiana Contract Release
Restructuring Cost And Reserve [Line Items]
Exit cost		$ 499,935	$ 0	$ 0

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Exit and Termination Costs - Exit and Termination Costs Included in Accrued Liabilities in Consolidated Balance Sheet - (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Exit costs included in accrued liabilities in consolidated balance sheet
Accrued severance costs	$ 5,909	$ 7,535	$ (356)
Exit Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Accrued contract obligations	490,114
Accretion of discount	20,720
Payments	(17,291)
Ending balance	493,543
Termination Costs
Exit costs included in accrued liabilities in consolidated balance sheet
Beginning balance	4,692
Accrued severance costs	5,909	7,535
Payments	(9,147)	(2,843)
Ending balance	$ 1,454	$ 4,692

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Suspended Exploratory Well Costs - Additional Information (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Capitalized Exploratory Well Costs [Abstract]
Capitalized exploratory well costs	$ 7,709	$ 0	$ 0

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Suspended Exploratory Well Costs - Schedule Of Changes In Capitalized Exploratory Well Costs (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)
Capitalized Exploratory Well Costs [Abstract]
Capitalized Exploratory Well Costs, Beginning Balance	$ 0
Capitalized Exploratory Well Cost, Additions Pending Determination of Proved Reserves	7,709
Reclassification to Well, Facilities, and Equipment Based on Determination of Proved Reserves	0
Capitalized Exploratory Well Cost, Charged to Expense	0
Capitalized Exploratory Well Costs, Ending Balance	7,709
Capitalized Exploratory Well Costs that Have Been Capitalized for Period of One Year or Less	7,709
Capitalized Exploratory Well Costs that Have Been Capitalized for Period Greater than One Year	$ 0

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Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited) - Additional Information (Detail) $ in Billions	Dec. 31, 2020 USD ($)
Accounting Changes And Error Corrections [Abstract]
Federal net operating loss carryforwards	$ 3.2

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Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited) - Schedule of Effect of Error on Statements of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			6 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total revenues and other income	$ 299,345	$ 376,546	$ 693,920	$ 1,070,466	$ 1,369,811	$ 1,968,697	$ 2,827,615	$ 3,282,645
Total costs and expenses	1,084,644	566,395	498,727	1,065,122	2,149,766	2,706,026	5,044,203	5,059,615
Loss before income taxes	(785,299)	(189,849)	195,193	5,344	(779,955)	(737,329)	(2,216,588)	(1,776,970)
Income tax (benefit) expense:
Current		(3)	(363)	(366)	(366)	(523)	6,147	0
Deferred	(36,509)	(22,263)	29,361	7,098	(29,411)	(25,029)	(506,438)	(30,489)
Total (benefit) expense for income taxes	(36,509)	(22,266)	28,998	6,732	(29,777)	(25,552)	(500,291)	(30,489)
Net loss	$ (748,790)	$ (167,583)	$ 166,195	$ (1,388)	$ (750,178)	$ (711,777)	$ (1,716,297)	$ (1,746,481)
Net loss per common share:
Basic	$ (3.12)	$ (0.70)	$ 0.67	$ (0.01)	$ (3.10)	$ (2.95)	$ (6.92)	$ (7.10)
Diluted	$ (3.12)	$ (0.70)	$ 0.66	$ (0.01)	$ (3.10)	$ (2.95)	$ (6.92)	$ (7.10)
Comprehensive income (loss)	$ (748,720)	$ (167,512)	$ 166,268	$ (1,244)	$ (749,964)	$ (711,468)	$ (1,716,427)	$ (1,745,807)
Originally Reported
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total revenues and other income	299,345	376,546	693,920	1,070,466	1,369,811
Total costs and expenses	1,084,644	566,395	498,727	1,065,122	2,149,766
Loss before income taxes	(785,299)	(189,849)	195,193	5,344	(779,955)
Income tax (benefit) expense:
Current		(3)	(363)	(366)	(366)
Deferred	(105,251)	(43,277)	50,581	7,304	(97,947)
Total (benefit) expense for income taxes	(105,251)	(43,280)	50,218	6,938	(98,313)
Net loss	$ (680,048)	$ (146,569)	$ 144,975	$ (1,594)	$ (681,642)
Net loss per common share:
Basic	$ (2.83)	$ (0.61)	$ 0.58	$ (0.01)	$ (2.82)
Diluted	$ (2.83)	$ (0.61)	$ 0.58	$ (0.01)	$ (2.82)
Comprehensive income (loss)	$ (679,978)	$ (146,498)	$ 145,048	$ (1,450)	$ (681,428)
Adjustments
Income tax (benefit) expense:
Deferred	68,742	21,014	(21,220)	(206)	68,536
Total (benefit) expense for income taxes	68,742	21,014	(21,220)	(206)	68,536
Net loss	$ (68,742)	$ (21,014)	$ 21,220	206	$ (68,536)
Net loss per common share:
Basic	$ (0.29)	$ (0.09)	$ 0.09		$ (0.28)
Diluted	$ (0.29)	$ (0.09)	$ 0.08		$ (0.28)
Comprehensive income (loss)	$ (68,742)	$ (21,014)	$ 21,220	$ 206	$ (68,536)

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Correction of Error in Previously Reported 2020 Interim Financial Statements (Unaudited) - Schedule of Effect of Error on Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total current assets	$ 289,840	$ 209,147	$ 331,839	$ 467,117	$ 427,802
Total non-current assets		5,803,751	6,120,372	6,122,521
Total current liabilities	706,841	630,120	530,253	490,125	566,544
Total non-current liabilities		3,788,810	3,585,936	3,603,705
Deferred tax liabilities	135,267	130,855	167,342	189,583	160,196
Total liabilities	4,499,401	4,418,930	4,116,189	4,093,830	4,264,915
Retained deficit	(4,018,685)	(4,057,086)	(3,308,296)	(3,140,639)	(3,306,834)
Total stockholders’ equity	1,637,535	1,593,968	2,336,022	2,495,808	2,347,488	$ 4,059,431	$ 5,774,272
Total liabilities and stockholders’ equity	$ 6,136,936	6,012,898	6,452,211	6,589,638	$ 6,612,403
Originally Reported
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total current assets		209,147	331,839	467,117
Total non-current assets		5,803,751	6,120,372	6,122,521
Total current liabilities		630,120	530,253	490,125
Total non-current liabilities		3,720,274	3,586,142	3,624,925
Deferred tax liabilities		62,319	167,548	210,803
Total liabilities		4,350,394	4,116,395	4,115,050
Retained deficit		(3,988,550)	(3,308,502)	(3,161,859)
Total stockholders’ equity		1,662,504	2,335,816	2,474,588
Total liabilities and stockholders’ equity		6,012,898	6,452,211	6,589,638
Adjustments
Error Corrections And Prior Period Adjustments Restatement [Line Items]
Total non-current liabilities		68,536	(206)	(21,220)
Deferred tax liabilities		68,536	(206)	(21,220)
Total liabilities		68,536	(206)	(21,220)
Retained deficit		(68,536)	206	21,220
Total stockholders’ equity		$ (68,536)	$ 206	$ 21,220

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Detail) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019		Dec. 31, 2018
Natural gas and oil properties:
Properties subject to depletion	[1]	$ 8,891,348	$ 9,345,557		$ 10,974,929
Unproved properties	[1]	859,766	868,180		2,110,277
Total	[1]	9,751,114	10,213,737		13,085,206
Accumulated depreciation, depletion and amortization		(4,064,305)	(4,172,702)	[1]	(4,062,021)	[1]
Natural gas and oil properties, successful efforts method, net	[1]	$ 5,686,809	$ 6,041,035		$ 9,023,185

[1] Includes capitalized asset retirement costs and the associated accumulated amortization.

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquisitions
Acreage purchases	[1]	$ 26,166	$ 57,324	$ 62,390
Oil and gas properties	[1]	0	0	1,683
Development	[1]	369,093	666,984	834,552
Exploration:
Exploration drilling costs incurred	[1]	7,709	0	1,380
Gas gathering facilities:
Development	[1]	3,694	3,583	10,218
Subtotal	[1]	439,317	764,574	944,340
Asset retirement obligations	[1]	2,610	11,193	28,826
Total costs incurred	[1]	441,927	775,767	973,166
Expense
Exploration:
Exploration costs incurred	[1]	31,376	35,117	32,196
Stock-based compensation expense	[1]	$ 1,279	$ 1,566	$ 1,921

[1] Includes cost incurred whether capitalized or expensed.

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Additional Information (Detail) Bcfe in Thousands, $ in Millions		12 Months Ended
		Dec. 31, 2020 USD ($) MMcfe Bcfe $ / MMBTU $ / bbl $ / Mcf MMcf MBbls	Dec. 31, 2019 MMcfe $ / MMBTU $ / bbl $ / Mcf MMcf MBbls	Dec. 31, 2018 MMcfe $ / MMBTU $ / bbl $ / Mcf MMcf MBbls	Dec. 31, 2017 MMcfe MMcf MBbls
Reserve Quantities [Line Items]
Percentage of proved resources reviewed by consultants		97.00%
Proved reserve and pretax present value of reserve discounted		10.00%
Variance in reserve estimates		less than 5%.
Scheduled to be drilling period maximum for undeveloped reserves		scheduled to be drilled within five years
Reserve additions attributable to natural gas		80.00%	83.00%	72.00%
Proved undeveloped reserves dropped		961,100	601,300	379,000
Revision of negative pricing		67,900	17,800
Revision of positive pricing and performance				957,000
Revisions of positive pricing				154,000
Cost spent on undeveloped reserves transferred to developed reserves | $		$ 284.9
Estimated future development costs over next five years | $		$ 2,400.0
Proved undeveloped reserves reported for more than five years | Bcfe		62
Crude Oil and NGL
Reserve Quantities [Line Items]
Benchmark price used for calculating average realized prices | $ / bbl		39.77	55.73	65.55
Crude Oil and Condensate
Reserve Quantities [Line Items]
Estimate reserve information average realized prices | $ / bbl		30.13	49.24	59.96
Proved developed and undeveloped reserves | MBbls		57,626	74,532	85,856	69,854
NGLs
Reserve Quantities [Line Items]
Estimate reserve information average realized prices | $ / bbl		16.14	17.32	25.22
Proved developed and undeveloped reserves | MBbls		951,466	938,236	921,594	763,264
Natural Gas
Reserve Quantities [Line Items]
Estimate reserve information average realized prices | $ / Mcf		1.68	2.38	2.98
Proved developed and undeveloped reserves | MMcf		11,148,560	12,114,977	12,027,702	10,263,649
Natural Gas, Per Thousand Cubic Feet
Reserve Quantities [Line Items]
Benchmark price used for calculating average realized prices | $ / MMBTU		1.98	2.58	3.10
Natural Gas Equivalents
Reserve Quantities [Line Items]
Proved reserves from drilling activities and evaluations of proved areas	[1]	1,264,282	1,161,274	3,143,898
Proved developed and undeveloped reserve balances	[1]	17,203,114	18,191,583	18,072,406	15,262,361
Revisions of previous estimates	[1]	(608,211)	303,068	731,735
Revision of positive performance		420,900	922,200
Ethane and Natural Gas Equivalents
Reserve Quantities [Line Items]
Proved developed and undeveloped reserve balances			2,102,000	2,075,000
Proved developed and undeveloped reserves | MBbls			475,000.0	468,900
Maximum
Reserve Quantities [Line Items]
Statement that reserve estimates differ from auditors		0.10

[1] Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Proved Developed and Undeveloped Reserves (Detail)		12 Months Ended
		Dec. 31, 2020 MMcfe MMcf MBbls	Dec. 31, 2019 MMcfe MMcf MBbls	Dec. 31, 2018 MMcfe MMcf MBbls
Proved undeveloped reserves:
Proved undeveloped reserves | MMcfe		7,410,574	8,289,115
Natural Gas
Reserve Quantities [Line Items]
Beginning Balance | MMcf		12,114,977	12,027,702	10,263,649
Revisions | MMcf		(789,992)	33,122	178,595
Extensions, discoveries and additions | MMcf		1,007,415	959,901	2,269,427
Property sales | MMcf		(609,311)	(327,634)	(135,884)
Production | MMcf		(574,529)	(578,114)	(548,085)
Ending Balance | MMcf		11,148,560	12,114,977	12,027,702
Proved developed reserves:
Proved developed reserves | MMcf		6,350,057	6,486,211	6,451,012
Proved undeveloped reserves:
Proved undeveloped reserves | MMcf		4,798,503	5,628,766	5,576,690
NGLs
Reserve Quantities [Line Items]
Beginning Balance		938,236	921,594	763,264
Revisions		42,741	57,311	84,993
Extensions, discoveries and additions		38,298	26,505	128,436
Property sales		(30,317)	(28,324)	(16,774)
Production		(37,492)	(38,850)	(38,325)
Ending Balance		951,466	938,236	921,594
Proved developed reserves:
Proved developed reserves		550,771	535,007	512,318
Proved undeveloped reserves:
Proved undeveloped reserves		400,695	403,229	409,276
Crude Oil and Condensate
Reserve Quantities [Line Items]
Beginning Balance		74,532	85,856	69,854
Revisions		(12,444)	(12,320)	7,197
Extensions, discoveries and additions		4,512	7,057	17,309
Property sales		(6,145)	(2,371)	(4,276)
Production		(2,829)	(3,690)	(4,228)
Ending Balance		57,626	74,532	85,856
Proved developed reserves:
Proved developed reserves		22,976	34,369	38,658
Proved undeveloped reserves:
Proved undeveloped reserves		34,650	40,163	47,198
Natural Gas Equivalents
Proved developed reserves:
Proved developed reserves | MMcfe	[1]	9,792,540	9,902,468	9,756,870
Proved undeveloped reserves:
Proved undeveloped reserves | MMcfe	[1]	7,410,574	8,289,115	8,315,536
Beginning Balance | MMcfe	[1]	18,191,583	18,072,406	15,262,361
Revisions | MMcfe	[1]	(608,211)	303,068	731,735
Extensions, discoveries and additions | MMcfe	[1]	1,264,282	1,161,274	3,143,898
Property sales | MMcfe	[1]	(828,084)	(511,811)	(262,180)
Production | MMcfe	[1]	(816,456)	(833,354)	(803,408)
Ending Balance | MMcfe	[1]	17,203,114	18,191,583	18,072,406

[1] Oil and NGLs volumes are converted to mcfe at the rate of one barrel equals six mcf based upon the approximate relative energy content of oil to natural gas, which is not indicative of the relationship between oil and natural gas prices.

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Changes in Proved Undeveloped Reserves (Detail)	12 Months Ended
	Dec. 31, 2020 MMcfe
Extractive Industries [Abstract]
Beginning proved undeveloped reserves at December 31, 2019	8,289,115
Undeveloped reserves transferred to developed	(1,258,551)
Revisions	(675,150)	[1]
Sales	(175,274)
Extension and discoveries	1,230,434
Ending proved undeveloped reserves at December 31, 2020	7,410,574

[1] Includes 961 Bcfe of proved undeveloped reserves removed and deferred due to the five-year rule which can be included in our future proved reserves as these locations are added back to our five-year development plan.

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Changes in Proved Undeveloped Reserves (Parenthetical) (Detail) MMcfe in Thousands	12 Months Ended
	Dec. 31, 2020 MMcfe
Extractive Industries [Abstract]
Proved undeveloped reserves removed and deferred	961

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Detail) - USD ($) $ in Thousands		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Extractive Industries [Abstract]
Future cash inflows		$ 35,820,758	$ 48,718,733
Future costs:
Production		(23,281,268)	(23,320,477)
Development	[1]	(2,744,539)	(3,219,349)
Future net cash flows before income taxes		9,794,951	22,178,907
Future income tax expense		(1,240,011)	(4,179,297)
Total future net cash flows before 10% discount		8,554,940	17,999,610
10% annual discount		(5,708,618)	(11,371,037)
Standardized measure of discounted future net cash flows		$ 2,846,322	$ 6,628,573	$ 11,115,594	$ 7,165,214

[1] 2020 includes $313.1 million of undiscounted future asset retirement costs estimated as of December 31, 2020, using current estimates of future abandonment costs.

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Standardized Measure of Discounted Future Net Cash Flows (Parenthetical) (Detail) $ in Millions	Dec. 31, 2020 USD ($)
Extractive Industries [Abstract]
Undiscounted future asset retirement costs estimation	$ 313.1

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Supplemental Information on Natural Gas and Oil Exploration, Development and Production Activities (Unaudited) - Changes in Discounted Future Net Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revisions of previous estimates
Changes in prices and production costs	$ (4,868,371)	$ (6,560,107)	$ 2,959,488
Revisions in quantities	(345,073)	(12,741)	667,763
Changes in future development and abandonment costs	107,899	104,585	(686,632)
Net change in income taxes	797,816	1,125,639	(1,075,867)
Accretion of discount	756,083	1,317,349	814,725
Additions to proved reserves from extensions, discoveries and improved recovery	280,441	552,710	2,543,296
Natural gas, NGLs and oil sales, net of production costs	(402,450)	(881,883)	(1,547,580)
Actual development costs incurred during the period	384,530	676,520	851,188
Sales of reserves in place	(394,125)	(688,937)	(226,953)
Timing and other	(99,001)	(120,156)	(349,048)
Net change for the year	(3,782,251)	(4,487,021)	3,950,380
Beginning of year	6,628,573	11,115,594	7,165,214
End of year	$ 2,846,322	$ 6,628,573	$ 11,115,594