Filed pursuant to Rule 424(b)(5)

Registration No. 333-229890

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PROSPECTUS SUPPLEMENT

(To Prospectus dated February 26, 2019)

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Up to $5,000,000

Common Stock

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We have entered into an equity purchase agreement dated September 28, 2021, with Leviston Resources LLC, or the Investor, relating to shares of our common stock offered by this prospectus supplement and the accompanying prospectus. In accordance with the terms of such agreement, we may offer and sell shares of our common stock with a maximum offering size, in the aggregate, of up to $5,000,000 to the Investor.

Our common stock is listed on the NYSE American under the symbol “LODE.” The last reported sale price of our common stock on the NYSE American on September 27, 2021 was $2.96 per share.

Sales of our common stock, if any, under this prospectus supplement and the accompanying prospectus may be made in sales deemed to be “at-the-market” equity offerings as defined in Rule 415 promulgated under the Securities Act of 1933, as amended, or the Securities Act, at a discount of 10.0% to the lowest intra-day reported sales price of the common stock on the date that the Investor receives a capital call from the Company.

We estimate that the total gross proceeds from this offering will be approximately $5,000,000. We estimate the total expenses of this offering, excluding the discount to the Investor, will be $15,000. In consideration of the Investor’s agreement to enter the equity purchase agreement, we agreed to deliver additional shares of our common stock with value of $250,000 to the Investor, for no additional consideration, on the first settlement date with respect to a put notice delivered by the Company. We also agreed to provide “most favored nation” status to the Investor with respect to other equity offerings conducted within five trading days of a sale under the equity purchase agreement. The Investor may be deemed to be an “underwriter” within the meaning of the Securities Act and the compensation and discounts received by the Investor will be deemed to be underwriting commissions or discounts. We have also agreed to provide indemnification and contribution with respect to certain liabilities, including liabilities under the Securities Act.

Investing in our common stock involves significant risk. Please read carefully the section entitled “Risk Factors” beginning on page S-15 of this prospectus supplement.

Neither the Securities and Exchange Commission (the “Commission”) nor any state securities commission has approved or disapproved of the common stock or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is September 28, 2021.

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TABLE OF CONTENTS

Prospectus Supplement

	Page
About This Prospectus Supplement	S-1
Where You Can Find More Information	S-2
Incorporation of Certain Documents by Reference	S-2
Cautionary Notice Regarding Forward-Looking Statements	S-3
Prospectus Supplement Summary	S-3
The Offering	S-14
Risk Factors	S-15
Use of Proceeds	S-17
Dilution	S-17
Capitalization	S-17
Underwriting	S-*18
Legal Matters	S-19
Experts	S-19

Prospectus

	Page
About This Prospectus		1
Where You Can Find More Information		1
Incorporation of Certain Documents by Reference		2
Summary		3
Forward Looking Statements		6
Risk Factors		6
Use of Proceeds		6
Description of Common Stock		7
Description of Preferred Stock		7
Description of Debt Securities		8
Description of Rights		16
Description of Warrants		18
Description of Units		20
Legal Ownership of Securities		21
Plan of Distribution		25
Validity of the Securities		26
Experts		26

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ABOUT THIS PROSPECTUS SUPPLEMENT

This prospectus supplement is part of a registration statement that we have filed with the U.S. Securities and Exchange Commission, or the SEC, utilizing a “shelf” registration process. By using a shelf registration statement, we may offer shares of our common stock under this prospectus supplement, with a maximum offering size, in the aggregate, of up to $5,000,000 to the Investor, at prices and on terms to be determined by market conditions at the time of offering.

We provide information to you about this offering of shares of our common stock in two separate documents that are bound together: (1) this prospectus supplement, which describes the specific details regarding this offering; and (2) the accompanying base prospectus, which provides general information, some of which may not apply to this offering. Generally, when we refer to this “prospectus,” we are referring to both documents combined. If information in this prospectus supplement is inconsistent with the accompanying base prospectus, you should rely on this prospectus. However, if any statement in one of these documents is inconsistent with a statement in another document having a later date, for example, a document incorporated by reference in this prospectus, the statement in the document having the later date modifies or supersedes the earlier statement as our business, financial condition, results of operations and prospects may have changed since the earlier dates.

You should rely only on the information contained in, or incorporated by reference into, this prospectus and in any free writing prospectus that we may authorize for use in connection with this offering. We have not, and Leviston Resources LLC, or the Investor, has not, authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the Investor is not, making an offer to sell or soliciting an offer to buy our securities in any jurisdiction where an offer or solicitation is not authorized or in which the person making that offer or solicitation is not qualified to do so or to anyone to whom it is unlawful to make an offer or solicitation. You should assume that the information appearing in this prospectus, the documents incorporated by reference into this prospectus, and in any free writing prospectus that we may authorize for use in connection with this offering, is accurate only as of the date of those respective documents. Our business, financial condition, results of operations and prospects may have changed since those dates. You should read this prospectus, the documents incorporated by reference into this prospectus, and any free writing prospectus that we may authorize for use in connection with this offering, in their entirety before making an investment decision. You should also read and consider the information in the documents to which we have referred you in the sections of this prospectus entitled “Where You Can Find More Information” and “Incorporation by Reference.”

We are offering to sell, and seeking offers to buy, shares of common stock only in jurisdictions where offers and sales are permitted. The distribution of this prospectus and the offering of the common stock in certain jurisdictions may be restricted by law. Persons outside the United States who come into possession of this prospectus must inform themselves about, and observe any restrictions relating to, the offering of the common stock and the distribution of this prospectus outside the United States. This prospectus does not constitute, and may not be used in connection with, an offer to sell, or a solicitation of an offer to buy, any securities offered by this prospectus by any person in any jurisdiction in which it is unlawful for such person to make such an offer or solicitation.

We may also authorize one or more “free writing prospectuses” (i.e., written communications concerning the offering that are not part of this prospectus supplement) that may contain certain material information relating to this offering. Before you invest in the common stock offered under this prospectus supplement, you should carefully read both this prospectus supplement and the accompanying prospectus together with additional information under the heading “Where You Can Find More Information” and “Incorporation of Certain Documents by Reference.”

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References in this prospectus supplement and the accompanying prospectus to the terms “we,” “us,” “our” “Comstock” or “the Company” or other similar terms mean Comstock Mining Inc. and its consolidated subsidiaries, unless we state otherwise or the context indicates otherwise.

WHERE YOU CAN FIND MORE INFORMATION

We are required to file periodic reports, proxy statements and other information relating to our business, financial and other matters with the Commission under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Our filings are available to the public over the Internet at the Commission’s web site at http://www.sec.gov. You may also read and copy any document we file with the Commission at, and obtain a copy of any such document by mail from, the Commission’s public reference room located at 100 F Street, N.E., Washington, D.C. 20549, at prescribed charges. Please call the Commission at 1-800-SEC-0330 for further information on the public reference room and its charges.

We have filed with the Commission a registration statement on Form S-3 under the Securities Act with respect to our securities described in this prospectus. References to the “registration statement” or the “registration statement of which this prospectus is a part” mean the original registration statement and all amendments, including all schedules and exhibits. This prospectus does, and any prospectus supplement will, not contain all of the information in the registration statement because we have omitted parts of the registration statement in accordance with the rules of the Commission. Please refer to the registration statement for any information in the registration statement that is not contained in this prospectus or a prospectus supplement. The registration statement is available to the public over the Internet at the Commission’s web site described above and can be read and copied at the locations described above.

Each statement made in this prospectus or any prospectus supplement concerning a document filed as an exhibit to the registration statement is qualified in its entirety by reference to that exhibit for a complete description of its provisions.

We make available, free of charge, on or through our web site, copies of our proxy statements, our annual reports on Form 10-K, our quarterly reports on Form 10-Q, our current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after we electronically file them with or furnish them to the Commission. We maintain a web site at http://www.comstockmining.com. The information contained on our web site is not part of this prospectus, any prospectus supplement or the registration statement.

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

We have filed the following documents with the Commission pursuant to the Exchange Act and hereby incorporate them by reference in the registration statement:

We incorporate by reference the documents listed below and any future documents that we file with the Commission under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus supplement:

(a) Our annual report on Form 10-K for the fiscal year ended December 31, 2020, filed with the Commission on March 10, 2021 (the “2020 Form 10-K”);

(b) Our quarterly reports on Form 10-Q for the fiscal quarters ended March 31, 2021 and June 30, 2021, filed with the Commission on May 11, 2021 and August 9, 2021, respectively (the “Form 10-Qs)

(c) Our proxy statement on Schedule 14A, filed with the Commission on April 20, 2021;

(d) The description of our Common Stock contained in our Form 8-A (File No. 001-35200), filed with the Commission under Section 12 of the Exchange Act on June 8, 2011 (the “Form 8-A”); and

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(d) Our current reports on Form 8-K filed with the SEC on January 4, 2021, January 5, 2021,February 9, 2021, February 18, 2021, March 2, 2021, June 4, 2021, June 28, 2021, July 29, 2021, August 6, 2021 and September 8, 2021.

All documents subsequently filed by us with the Commission pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in the registration statement and to be a part hereof from the date of filing of such documents.

Notwithstanding the foregoing, documents or portions thereof containing information furnished under Items 2.02 and 7.01 of any Current Report on Form 8-K, including the related exhibits under Item 9.01, are not incorporated by reference in this prospectus.

We make available copies of the documents incorporated by reference in this prospectus to each person, including any beneficial owner, to whom a prospectus is delivered, without charge, upon written or oral request. Such requests should be directed to:

Comstock Mining Inc.

P.O. Box 1118

Virginia City, Nevada 89440

Attention: Investor Relations

Telephone: (775) 847-5272

CAUTIONARY NOTICE REGARDING FORWARD-LOOKING STATEMENTS

The information appearing under “Cautionary Notice Regarding Forward-Looking Statements” in the 2020 Form 10-K and the Form 10-Qs is hereby incorporated by reference.

PROSPECTUS SUPPLEMENT SUMMARY

This summary highlights information contained or incorporated by reference in this prospectus supplement and the accompanying prospectus. This summary may not contain all of the information that you should consider before investing in our common stock. We urge you to read this entire prospectus and the documents incorporated by reference carefully, including the section entitled “Risk Factors” and the financial statements and other information included or incorporated by reference in this prospectus.

The Company

The Company is an emerging leader in the sustainable extraction, valorization, and production of innovation-based, clean, renewable natural resources, with a focus on high-value, cash-generating, strategic materials that are essential to meeting the rapidly increasing global demand for clean energy, carbon-neutrality, and natural products.

The Company’s goal is to grow per-share value by commercializing environment-enhancing, natural resource-based products and processes that generate a rate of predictable cash flow (throughput) and increase the long-term enterprise value of our northern Nevada based platform. The next three years are dedicated to delivering that value by achieving the performance objectives listed below:

Commercialize a global, environmental, social, corporate governance (“ESG”) compliant, profitable, mercury remediation and other critical mineral systems:

•    Establish the technical efficacy of the Mercury Clean Up, LLC (“MCU”) Comstock Mercury System, and protect the intellectual property;

•    Deploy and operate the first international mercury remediation project by deploying MCU’s second and third mercury remediation systems into the Philippines;

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•    Identify, evaluate and prioritize a pipeline of potential mercury remediation projects; then deploy the third and fourth mercury remediation projects, producing extended, superior cash flow returns; and

•    Assess and acquire accretive, ESG-based, natural resource material expansion opportunities.

Establish and grow the value of our mineral properties:

•    Establish the Dayton Resource area’s maiden, stand-alone mineral resource estimate;

•    Expand the Dayton-Spring Valley Complex through exploration drilling and geophysical modelling;

•    Develop the expanded Dayton-SV Complex toward full economic feasibility, supporting a decision to mine;

•    Entitle the Dayton-SV Complex with geotechnical, metallurgical, and environmental studies and permitting; and

•    Validate the Comstock NSR Royalty portfolio (e.g., Lucerne Mine, Occidental Lode, Comstock Lode).

Monetize non-strategic assets and build a quality organization:

•    Monetize our third-party, junior mining securities responsibly, for $12.5 million or more;

•    Monetize our non-mining assets for $12.5 million, excluding the Gold Hill Hotel;

•    Grow the value of our Opportunity Zone investments to over $30.0 million; and

•    Deploy a systemic organization, capable of accelerating growth and handling complexity.

The plan is designed to deliver per-share value over the next three years, while positioning the Company for continued growth.

We began acquiring properties in the Comstock District in 2003. Since then, we have consolidated a significant portion of the Comstock District, amassed the single largest known repository of historical and current geological data on the Comstock region, secured permits, built an infrastructure and completed two phases of test production. We are currently developing four new businesses, including our Lithium-ion battery recycling business, LINICO Corporation (“LINICO”); our mercury remediation business, MCU; our development of disruptive quantum computing programs with prioritized applications in all of our existing lines of business, Quantum Generative Materials LLC (“GenMat”); and our carbon-reducing industrial hemp processing and crude oil extraction business, MANA Corporation (“MANA”). We continue evaluating environment-enhancing, natural resource-based products and processes, especially in the areas of carbon capture and utilization, that can grow the rate of our predictable future cash flow (throughput) and increase the long-term enterprise value of our entire asset-based platform.

We now own, control, or retain a royalty interest in approximately 9,358 acres of mining claims, parcels, and royalty interests in the broader Comstock District and surrounding area. The acreage includes approximately 2,396 acres of patented claims and surface parcels (private lands), and approximately 6,962 acres of unpatented mining claims (public lands), which the Bureau of Land Management administers. Our headquarters is on American Flat Road, immediately north of the Lucerne resource area and just south of Virginia City, Nevada.

Because of the Comstock District’s historical significance, the geology is well known and has been extensively studied by the Company, our advisors and many independent researchers. We have expanded our understanding of the geology through vigorous surface mapping and drill hole logging. The volume of geologic data is immense, particularly in the Lucerne and Dayton resource areas. We have amassed a large library of historical data and detailed surface mapping of Comstock District properties and continue to obtain historical information from public and private sources. We integrate this data with information obtained from our mining operations, to target prospective geological exploration areas and plan exploratory drilling programs, including expanded surface and underground drilling.

Our Dayton resource area and the adjacent Spring Valley exploration targets are located in Lyon County, Nevada, approximately six miles south of Virginia City. Access to the properties is by State Routes 341 and 342, both paved roads.

Our sale to Tonogold Resources, Inc. (“Tonogold”) of the membership interests in Comstock Mining LLC, the owner of the Lucerne Mine, resource area and related permits closed on September 8, 2020. The Lucerne

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resource area is located in Storey County, Nevada, approximately three miles south of Virginia City and 30 miles southeast of Reno. The Lucerne resource area was host to our most recent test mining operations from 2012 through 2016. Lucerne is the subject of ongoing assessment, exploration and development plans by Tonogold. We retain a 1.5% NSR royalty in the Lucerne properties.

We achieved initial production and first poured gold and silver on September 29, 2012, ceased mining in 2015, and concluded processing in 2016. From 2012 through 2016, we mined and processed approximately 2.6 million tons of mineralized material, and produced 59,515 ounces of gold and 735,252 ounces of silver.

On February 15, 2021, we entered into a Series A Preferred Stock Purchase Agreement (“LINICO Stock Purchase Agreement”) with LINICO and purchased shares of LINICO convertible preferred stock representing 45.45% of LINICO fully diluted shares and 48.78% of voting shares, in exchange for 3.0 million shares of our restricted common stock, and committed $4.5 million in cash payments between February and September 2021. LINICO is a cleantech startup, with plans for a state-of-the art battery materials recycling facility focused on commercializing economically viable and environmentally sustainable technologies for lithium-ion battery recycling. LINICO’s goal is to alleviate global reliance on harmful mining activities that are used in the production of critical minerals, to support the increasingly high demand and shortage of these critical minerals, to close-the-loop on sustainable practices for end-of-life lithium-ion batteries, and to support a clean energy economy. We have the right, through a warrant and other investments, to purchase over 57% of LINICO’s fully diluted voting share ownership.

Our corporate structure is well aligned with our strategic focus. Comstock remains the parent company that wholly owns the realigned subsidiaries. Comstock Processing LLC owns the American Flat processing facility and additional land for potential expansion. Comstock Northern Exploration LLC owns or controls the remaining Storey County exploration targets, primarily located north of the Lucerne properties, including the Occidental Lode. Comstock Exploration and Development LLC owns or controls the Lyon County mining claims and exploration targets, including the Dayton Resource Area and the Spring Valley target. Comstock Industrial LLC owns properties in Silver Springs and related water rights. Downtown Silver Springs LLC (“DTSS”) owns other properties in downtown Silver Springs. Comstock Real Estate Inc. owns the Daney Ranch and the Gold Hill Hotel.

Comstock Mining LLC, now 100% owned by Tonogold, controls the Lucerne properties, including those owned by Northern Comstock LLC (“Northern Comstock”). The Company recorded a gain of $18.3 million associated with the sale of Comstock Mining LLC in 2020.

Current Projects - Natural Resource Renewal

LINICO Corporation Investment

On February 15, 2021, the Company, Aqua Metals, Inc. (“AQMS”) and LINICO entered into the LINICO Stock Purchase Agreement. The investment is in line with our focus on sustainable extraction, valorization, and production of innovation-based, clean, renewable natural resources, concentrating on high-value, cash-generating, strategic materials that are essential to meeting the rapidly increasing global demand for clean energy.

Purchase of LINICO Preferred Stock

Pursuant to the LINICO Stock Purchase Agreement, we purchased 6,250 shares of LINICO Series A 8% Convertible Preferred Stock (“Series A Preferred”) for $6,250,000 and issued 3.0 million shares of our restricted common stock (“CMI Stock”) in payment of the purchase price. Upon issuance, the CMI Stock had a fair value of $6,750,000, of which $6,250,000 was allocated to the investment in shares of LINICO and $500,000 was allocated to the derivative asset related to LINICO on the condensed consolidated balance sheets. The Series A Preferred has a conversion price of $1.25 per share of LINICO common stock. Following the purchase of the Series A Preferred, we own 45.45% of LINICO fully diluted shares and 48.78% of voting shares. Our chief executive officer is a member of the LINICO board of directors.

The LINICO Stock Purchase Agreement provides that LINICO will use the proceeds to fund (i) technology-based lithium-ion battery recycling and cathode production equipment, (ii) an industrial facility lease-

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purchase, (iii) startup costs and general working capital; (iv) a $1.0 million investment in Green Li-ion Pte. Ltd., and (v) the repurchase of LINICO common stock with a value of $500,000.

Cash Commitment

Under the LINICO Stock Purchase Agreement, we also agreed to make $4.5 million in cash payments to LINICO (“Cash Commitment”), payable in a series of installments between February 26, 2021 and September 30, 2021. As of July 1, 2021, $2.5 million had been paid and was recognized as an addition to the derivative asset related to LINICO on the condensed consolidated balance sheets.

Warrant

Pursuant to the LINICO Stock Purchase Agreement, the Company and LINICO entered into a warrant agreement (“Warrant”) wherein we have the right to purchase 2,500 additional shares of Series A Preferred for a total exercise amount of $2.5 million. The Series A Preferred received by us pursuant to exercise of the Warrant may be converted into shares of LINICO common stock at a conversion price of (i) $1.25, if exercised on or before February 15, 2022, or (ii) $2.00, if exercised after February 15, 2022.

LINICO Lease Agreement and Additional Lease Deposit

Pursuant to the terms of an industrial lease between LINICO and AQMS, entered into on February 15, 2021 (“LINICO Lease Agreement”), if LINICO elects not to exercise its option to purchase from AQMS land, buildings and related improvements, initially leased by AQMS to LINICO, for (i) $14,250,000, if the purchase is made on or before October 1, 2022 or (ii) $15,250,000, if the purchase is made after October 1, 2022, we can assume the purchase option.

The LINICO Lease Agreement requires LINICO to make an initial deposit and, by November 1, 2022, an additional deposit (“Additional Deposit”) in an amount equal to $2.0 million, to be credited towards the purchase price of the facility. The LINICO Stock Purchase Agreement grants us the option to fund the Additional Deposit with shares of our common stock (in no event will we issue shares to LINICO pursuant to the LINICO Stock Purchase Agreement that exceed 19.9% of our total issued and outstanding common shares as of February 15, 2021).

Obligations

In the event cash proceeds received by LINICO from the sale of the CMI Stock are less than $6,250,000, we are obligated to provide LINICO with additional shares of our common stock or cash to make up the shortfall. However, if cash proceeds from the sale of CMI Stock plus Cash Commitment payments received by LINICO (“Consideration”) exceed $10,750,000, the excess must be returned to us by LINICO, along with any remaining shares of CMI Stock held by LINICO. The first $4.5 million of Consideration received by LINICO in excess of $6,250,000 will be applied to exercise our Warrant (up to $2,500,000) and, thereafter, to fund the Additional Lease Deposit (up to $2.0 million), with additional Series A Preferred issued to us for the amount funded.

Acquisition of Renewable Process Solutions Inc.

On June 2021, Comstock acquired 100% of the capital stock and voting shares of Renewable Process Solutions Inc. (“RPS”), an advanced process engineering and renewable technology development company, in exchange for 1,000,000 restricted shares of our common stock, with a fair value of $2.4 million and the assumption of $0.1 million in liabilities.

We identified RPS in discussions with our current and prospective investment companies, and acquired RPS to build our critical core competencies in advanced process engineering and renewable technology development necessary to facilitate our participation in the development and growth of these companies.

Investment in Quantum Generative Materials LLC

On June 24, 2021, Comstock invested in the equity of GenMat, a developer of quantum computing technologies with the goal of accelerating material science discovery and development and partnering in the

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commercialization of new quantum generated materials. GenMat is developing a proprietary quantum operating system to harnesses emerging quantum computing technologies and develop breakthrough new materials for use in our strategically aligned, high-impact fields of interest, including global mining, battery recycling, and carbon capture.

Comstock’s Venture with Mercury Clean Up, LLC

In June 2019, we entered into an agreement with MCU (as amended, the “MCU Agreement”) to pilot test new, cleaner technologies, in collaboration with Oro Industries Inc. (“Oro”), for the manufacture and global deployment of mercury remediation systems with proprietary mechanical, hydro, electro-chemical and oxidation processes, to reclaim and remediate mercury from soils, waste and tailings. MCU has the exclusive, worldwide rights to four patentable technologies and equipment that we believe will demonstrate feasible, economic mercury remediation. Comstock provides the platform for testing the mercury remediation system and MCU will conduct the trials that prove scalable feasibility. MCU plans to deploy the solution globally and has secured its first major, international remediation project in the Philippines. Comstock’s award-winning mercury reclamation experience coupled with MCU’s technology and processing know-how positions a new, global growth opportunity consistent with our Strategic Focus.

Worldwide unregulated activity has released thousands of tons of mercury into the environment. The continued worldwide use of mercury in unregulated activities, primarily outside of the United States, is polluting air, soils and waters, and poisoning marine life and endangering lives. Ongoing, unregulated artisanal mining outside of the U.S. represents more than 40% of ongoing mercury contamination and represents a tremendous opportunity for cleaning up the environment in a sustainable, profitable manner. Mercury will not go away by itself and must be removed to stop the pollution. Mercury can’t be broken down or destroyed, and MCU, in collaboration with Oro and the Company, is pioneering an effective solution.

    Pursuant to the MCU Agreement, the Company committed $2.0 million of capital contributions payable in cash of $1,150,000 and stock of $850,000, in exchange for 15% of the fully-diluted equity ownership of MCU and 50% of the equity of any future joint ventures formed with MCU. Through June 30, 2021, we have invested $1,150,000 in cash and $850,000 in shares of our common stock, representing a $2.0 million commitment for MCU to demonstrate the feasibility of the Mercury Remediation System on CPL’s permitted platform. In addition, by providing $2.0 million of financing to MCU Philippines, Inc. (“MCU-P”), the Philippines joint venture company, Comstock earned an additional 10% ownership in MCU, increasing our equity ownership in MCU to 25%.

Over the past seven years, Comstock has implemented several plans, approved by the Nevada Division of Environmental Protection (“NDEP”), intended to address NDEP and the U.S. Environmental Protection Agency protocols, guidance and goals for sampling, characterizing, transporting and managing mercury within the Carson River Mercury Superfund Site (“CRMS”) Study Area. These plans and CPL’s existing, permitted infrastructure provide an ideal platform for validating the efficacy of the MCU process and technology. MCU and the Company will work closely with NDEP for any additional approvals or permits.

The Company and MCU are evaluating numerous locations containing historical, mercury-contaminated tailings, and developing a detailed schedule for pilot testing. MCU delivered sampling and testing equipment to the American Flat site in February 2020, and began taking samples of tailings at locations in the CRMS to locate suitable material to commence testing. The remaining equipment arrived at the American Flat site during the third quarter of 2020, and MCU began stockpiling material and initial test processing during the fourth quarter of 2020. During the first half of 2021, we led a program of detailed sampling of several Comstock-district tailings deposits. The results will lead to the prioritization of the tailings for pilot-scale production.

Based on successful proof of technical and economic viability, the Company and MCU would create a new, 50-50 venture to be called Comstock Mercury Remediation to pursue global business opportunities. We currently hold 25% of the membership interests of MCU and, separately, the right to 50% participation in any joint ventures, including, but not limited to, MCU-P and the Comstock mercury remediation project, the first two mercury remediation project opportunities.

We entered into a second amendment of the MCU Agreement, on April 10, 2020, wherein, MCU and Comstock have identified an opportunity to remediate mercury in the Philippines, particularly in the province of

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Davao d’ Oro (“Philippine Opportunity”); where Comstock and MCU formed a new joint venture to engage profitably in the Philippine Opportunity. We have made cash investments in the form of $2.0 million in non-interest-bearing loans, committed up to an additional $1.0 million in equity and debt investments, and received 50% ownership of MCU-P. Our investments in joint ventures under the MCU Agreement reached $2.0 million in the first quarter of 2021, and we were issued an additional 10% of the membership interests in MCU, for total membership interests of 25%.

The first processing unit was shipped to the Philippines in the fourth quarter of 2020. Mercury remediation testing combined with limited production of sand and gravel commenced in the first half of 2021. A permit is pending to allow the operation to scale to full production rates. Production rates are expected to increase throughout the remainder of 2021.

Acquisition of Plain Sight Innovations

On September 7, 2021, the Company entered into a Securities Exchange Agreement (the “Securities Exchange Agreement”) with the shareholders of Plain Sight Innovations Corporation (“PSI”), in order to acquire 100% of the issued and outstanding equity of PSI, in exchange for 8,500,000 restricted shares of the Company’s common stock. Such shares are subject to transfer restrictions (the Lock-Up”), of which 28% will be released from the Lock-Up 180 days after closing, and the remaining 72% will be released in eight (8) equal installments of 9% every six months thereafter.

In connection with the transactions described above, the Company agreed to appoint a designee of one of the former shareholders of PSI, Triple Point Asset Management LLC (“TPAM”), to the Company’s board of directors and as Comstock’s president and chief financial officer, and agreed to appoint a designee of another one of the former shareholders of PSI, Global Catalytic Disruptor Fund LLC (“GCDF”), to serve as Comstock’s chief technology officer.

TPAM’s appointee is Kevin Kreisler, the beneficial owner and sole manager, executive officer and director of TPAM. GCDF’s appointee is David Winsness, the beneficial owner and sole manager, executive officer and director of GCDF.

Flux Photon Asset Acquisition

On September 7, 2021, the Company also entered into an Asset Purchase Agreement (the “Asset Purchase Agreement”) with Flux Photon Corporation (“Flux”), in order to acquire certain intellectual property and related photovoltaic and photocatalysis laboratory equipment (the “Assets”). The purchase price payable for the Assets is $18,000,000 payable in cash to Flux with 20% of the future monthly consolidated sales, less total variable costs, less operating expenses, maintenance, tax payments, and debt service payments of the Company and its now and hereafter-existing subsidiaries, until the purchase price of $18,000,000 has been fully paid. The Company assigned the Assets to its wholly-owned PSI subsidiary immediately after closing.

Current Projects – Mining

Exploration and Development

We have identified many exploration targets on our land holdings in the Comstock District, but have focused, to date, on the Dayton resource area and, through our collaboration with Tonogold, the Lucerne resource area (including surface and underground exploration). We have also leased the remaining Storey County mineral claims, including the Occidental group and other exploration targets, to Tonogold, which has near-term plans for exploration and ultimately development towards economic feasibility for those assets. We are developing exploration plans for the remaining areas, primarily the Dayton resource area and Spring Valley group that we view as an extension of the Dayton resource area.

Our district-wide exploration and development plans contemplate three specific, geological areas that we have organized into our wholly-owned subsidiaries, Comstock Exploration and Development LLC and, Comstock Northern Exploration LLC, and Comstock Mining LLC. Comstock Exploration and Development LLC includes the Dayton and Spring Valley areas. Comstock Northern Exploration LLC includes the Occidental and Gold Hill

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exploration targets now leased to Tonogold, and Comstock Mining LLC, acquired by Tonogold in September 2020, includes the Lucerne properties, in which we retain a 1.5% NSR royalty. These exploration targets represent over 7 miles of mineralized strike length, with current and historical grades of gold and silver, and significant historical mine production (Figure 3).

We retain royalties ranging from 1.5% to 3.0% on the Lucerne, Occidental and other properties, and an additional royalty of 1.0% (that is 25% of 4%) on Sutro Tunnel Company (“Sutro”) mining patents in Storey County, Nevada, through the Company’s 25% membership interests in Pelen Limited Liability Company (“Pelen”), the 100% owner of Sutro.

Comstock Processing LLC (100% owner of the American Flat Processing Facility)

The processing facility is in the American Flat area of Gold Hill, Nevada, less than a mile west of Lucerne, and operated 24 hours per day, seven days per week, for substantially all of late 2012 through 2016. During 2019, Comstock formed Comstock Processing LLC (“CPL”), a newly realigned, wholly-owned subsidiary that owns all of the properties, plant, equipment, and permits for the crushing, agglomerating, leaching, Merrill Crowe processing, mercury retort, refining, and metallurgical operations located at 1200 American Flat Road, Virginia City, Nevada. The facilities represent a fully permitted platform, best positioned for implementing our Strategic Focus on high-value, cash-generating, precious metal-based activities, including, but not limited to, metals exploration, engineering, resource development, economic feasibility assessments, mineral production, metal processing and related ventures of environmentally friendly, and economically enhancing mining technologies. To date, CPL has entered into two agreements that leverage its platform for nearer-term cash generation; first with the Lease Option Agreement with Tonogold to lease and operate the facilities and second, with MCU for the commercial pilot of the MCU mercury remediation system.

CPL’s Lease Option with Tonogold

On November 18, 2019, we entered into the Lease Option Agreement to lease our permitted American Flat mining properties, plant and equipment to Tonogold for crushing, leaching and processing material from the Lucerne Mine. Under the Lease Option Agreement, Tonogold is required to reimburse the Company approximately $1.1 million in expenses to maintain the option. If the option is exercised, Tonogold will then pay us a rental fee of $1.0 million per year plus $1 per processed ton, in addition to all the costs of operating and maintaining the facility. After the first $15.0 million in rental fees are paid, the rental fee will step down to $1.0 million per year and $0.50 per processed ton for the next $10.0 million paid to us.

CPL and Development of Clean Technologies

The ongoing testing of alternative technologies aligns with our Strategic Focus on responsible development. A breakthrough with cleaner technologies could result in higher, faster recoveries with reduced waste, shorter permitting cycle times and lower reclamation costs.

We continue exploring other partners and ventures that can leverage our fully-permitted platform for the development of cash-generating, precious and strategic minerals-based activities, including, but not limited to, metals exploration, engineering, resource development, economic feasibility assessments, mineral production, metal and other materials processing, and related ventures of environmentally-friendly and economically enhancing mining and materials technologies.

Comstock Exploration & Development (100% owner of the Dayton Resource and Spring Valley Exploration Areas)

Our Dayton resource area and the adjacent Spring Valley exploration targets are located in Lyon County, Nevada, approximately six miles south of Virginia City. Access to the properties is by State Routes 341 and 342, both paved roads. The Dayton resource area includes the historic Dayton, Kossuth and Alhambra patents, and the Dayton Consolidated mine workings. The historic Dayton Consolidated mine was the last meaningful underground mining operation in the Comstock District, before being closed after the War Act in October 1942, which closed down non-essential gold mining operations in the United States and its territories.

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The Dayton resource area ranks as our top exploration and development target. In January 2014, the Lyon County Board of Commissioners approved strategic master plan and zoning changes on the Dayton, Kossuth and Alhambra mining patents and other properties located in the Dayton resource area, enabling a more practical, comprehensive feasibility study for mining. Geological studies and development planning are currently underway utilizing data from extensive metallurgical testing and assessment during 2017, an additional 30,818 feet of drilling completed in 2015, geophysical analysis and interpretation completed in 2013, and extensive geological data from pre-2013 drill programs.

During the third quarter of 2020, we engaged Geotech Ltd (“Geotech”) of Aurora, Canada, to conduct an airborne geophysical survey of the Dayton resource area, Spring Valley exploration targets, and the rest of our Comstock District properties. The survey included both magnetic and Geotech’s proprietary Versatile Time-Domain Electromagnetic surveys. The survey was flown from September 19 through October 3, 2020, with 1,161 line-kilometers. The interpreted, three-dimensional results were delivered in the second quarter of 2021. The results will greatly increase our understanding of the Dayton resource area and Spring Valley resource expansion potential, along with our other exploration targets in Lyon County.

Our technical staff is currently compiling a detailed structural interpretation of the Dayton resource area, which will provide the framework for a completely new resource model. The detailed interpretation is leading to a list of highly prospective drill targets to further define and expand the mineral resource.

The plan includes expanding the current resource at the Dayton resource area and continuing southerly into Spring Valley. The Spring Valley group of exploration targets lies adjacent to the Dayton resource area, trending south toward the southern-most end of the Comstock District that includes the southern portion of the Kossuth patented claim and the Dondero and Daney claims, and all of our placer mining claims in Spring Valley and Gold Canyon. The Spring Valley mineralized structures lie mostly concealed beneath a veneer of sediment gravels and the volcanic host rocks, and the structural controls of the mineralization defined for the Dayton resource area are known to continue south into Spring Valley. The exploration of Spring Valley will include phased drilling programs that will continue southerly from State Route 341 to the historic Daney mine site (Figure 4), with a potential strike length of approximately 9,600 feet.

On May 21, 2020, we enhanced our land position in Spring Valley by exercising our option with New Daney Company, Inc. (“New Daney”) to purchase seven unpatented lode mining claims in Spring Valley. These claims had been leased from New Daney since 2010. We paid a total of $100,000 for the claims. On October 8, 2020, we closed the transaction with a payment in full of the $85,000 balance.

We are proceeding to publish a separate S-K 1300 compliant, Initial Assessment technical report for the Dayton resource area to validate a mineral resource estimate. The new technical report will provide not only a new resource estimate, but also a phased drilling plan for further defining and expanding the resource for sustainable, profitable mining. We plan to continue to advance the Dayton resource area to full feasibility, towards a production-ready mine plan. Mining and processing on our 100% privately held lands should simplify and shorten the critical permitting chain.

Comstock Northern Exploration LLC (Occidental Lode and Other Northern Target Mineral Claims)

Tonogold has commenced further, detailed analysis of our northern targets that correlates historical data with modern geological assessments and reveals a potentially much larger exploration opportunity. Accordingly, we signed a Mineral Exploration and Mining Lease (“Exploration Lease”) with Tonogold for certain mineral properties in Storey County, Nevada. The lease is for an initial term of 5 years, with options to renew for an additional 15 years, as long as specific commitments are met, including Tonogold spending of at least $1.0 million per year on exploration and progressively validating progress through technical reports.

The lease has a quarterly fee of $10,000 in the first year, escalating 10% per year thereafter. Tonogold is also required to reimburse all claim maintenance costs, third-party lease payments, and other costs associated with owning the properties. We retain a 1.5% to 3.0% NSR royalty on future mineral production from the properties. We also maintain an additional net royalty of 1.0% (that is, 25% of 4%) for the historic Sutro mining patents in Storey County, Nevada, through our 25% membership interest in Pelen, the 100% owner of Sutro. On September 1, 2020, we paid $100,000 for a one-year option to purchase the remaining 75% of the membership interests of Pelen for a

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purchase price of $3,750,000. If the option agreement is exercised, half of the option payment will be credited to the purchase price. See Note 2, Acquisitions, Investments and Divestitures, to our condensed consolidated financial statements.

The Exploration Lease includes the Occidental group and Gold Hill group of exploration targets, which contain many historic mining operations, including the Overman, Con Imperial, and Yellow Jacket mines, as well as the historically under-developed Occidental Lode, parallel to the main Comstock trend. We believe this will accelerate the development of these targets and enhance the value of our mineral property and royalty portfolio. Tonogold has permitted an exploration drilling program for these areas, and began drilling during the third quarter of 2020, commencing their announced $7.0 million drill program, including both core and RC drilling, focused on the historically significant Comstock Lode. Tonogold completed four holes totaling 5,511 feet of drilling on the leased properties during the year ended December 31, 2020, and completed eleven holes totaling 12,232 feet of drilling during the six months ended June 30, 2021.

Comstock Mining LLC (100% owner of the Lucerne Resource Area)

In January 2019, the Company and Tonogold entered into a Purchase Agreement, as restated and amended in September 2020, to sell to Tonogold our interests in Comstock Mining LLC, our wholly-owned subsidiary with sole net assets of the Lucerne properties and related permits. The transaction was completed September 8, 2020, with Tonogold receiving 100% of the membership interests and full control of Comstock Mining LLC. We received consideration including $7.1 million in cash, $6.1 million in Tonogold Series D Convertible Junior Participating Non-Cumulative Perpetual Preferred Stock (“CPS”) with a fair value of $7.6 million, and a convertible note receivable (“Note”) with fair value of $6.1 million, net of a related contingent forward with a fair value of $2.0 million, for a total of $18.8 million, resulting in an $18.3 million gain.

We retained a 1.5% NSR royalty on the Lucerne properties. Tonogold also guaranteed the remaining payments for our membership interest in Northern Comstock, which owns and leases certain mineral properties in the Lucerne area, and assumed certain reclamation liabilities.

On March 3, 2021, we made a $812,500 payment to Northern Comstock pursuant to a notice of a One Payment Surplus Event, as required by the Northern Comstock operating agreement, as amended. The payment was triggered by our receiving net proceeds in excess of $6,250,000 from sources other than operations in connection with the direct sale of registered shares of common stock on March 4, 2021. Primarily as a result of the Northern Comstock accelerated payment, the Note was amended in March 2021, which included adding $812,500 to the principal amount of the Note for Tonogold’s Northern Comstock accelerated payment reimbursement obligation and an accommodation fee of $262,500, making the new principal amount $5,550,000, and extending the maturity date to March 31, 2022. On June 1, 2021, the Note was further amended to add $1.1 million to the principal amount of the Note for certain Tonogold, Northern Comstock and other reimbursement obligations and an accommodation fee of $100,000. See Note 2, Acquisitions, Investments and Divestitures, to our condensed consolidated financial statements.

Over the past two years, Tonogold, aided by the independent mining advisory firm of Mine Development Associates, has evaluated and remodeled the Lucerne mineral resource, and plans further exploration, development and economic feasibility assessments.

Current Projects - Real Estate

Gold Hill Hotel

On February 1, 2021, we signed a new lease, as lessor, with Gold Hill Management LLC to lease the Gold Hill Hotel. The new lease term begins April 1, 2021 and ends on March 31, 2024. The agreement includes the payment of $19,500 in previously deferred rent from the previous month to month tenant, Crown Point Management LLC. The rent is $4,525 per month for the first year, inclusive of real estate taxes, increasing to $6,050 per month for the second year, and $7,575 per month for the third year. At the end of the three-year term, the tenant may renew the lease for up to two additional five-year periods, at a rate of $8,000 per month. See Note 10, Leases, to our condensed consolidated financial statements.

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Sierra Springs Opportunity Fund, Inc.

Investment in SSOF - During 2019, Comstock invested $335,000 in Sierra Springs Opportunity Fund, Inc. (“SSOF”), a qualified opportunity zone fund, which wholly-owns a qualified opportunity zone business, Sierra Springs Enterprises (“SSE”). We expect to own approximately 9% of SSOF upon issuance by SSOF of all 75.0 million authorized shares to investors. As of June 30, 2021, we own 12% of the voting shares of SSOF and SSOF has received $12.0 million in equity from investors, including $335,000 from the Company and $525,000 (16.4% of voting shares) from our officers and directors. Our chief executive officer is president and a director of SSOF and an executive and a director of SSE.

Silver Springs Properties - On September 26, 2019, as amended, we entered into agreements with SSE to sell our two Silver Springs properties (“Silver Springs Properties”). The agreements include the sale of 98 acres of industrial land and senior water rights for $6.5 million and 160 acres of commercial land along with its rights in the membership interests of DTSS for $3.6 million. As of June 30, 2021, we have received deposits in cash and escrow from SSE totaling $0.4 million towards the purchase of the Silver Springs Properties, recorded in deposits under current liabilities on the condensed consolidated balance sheets. The transactions are expected to close during 2021.

Advance to SSOF - For the six months ended June 30, 2021, we advanced SSOF an additional $2,735,000, increasing total advances to $4.4 million, to be used by SSOF for deposits and payments on land and other facilities related to investments in qualified businesses in the opportunity zone. The advances are non-interest-bearing and are expected to be repaid during 2021, upon the sale of our Silver Springs Properties to SSE.

Outlook

We have approved a three-year, strategic plan with specific performance objectives designed to deliver per-share value over the next three years, while positioning the Company for continued growth beyond 2023. The plan objectives include establishing and growing the value of our existing mineral properties and royalty stakes, commercializing and growing existing, ESG-compliant, lithium-ion battery recycling and mercury remediation businesses and acquiring additional, accretive, ESG-based, natural resource material expansion opportunities, including the recently announced acquisitions and investments in RPS, GenMat and MANA and MANA’s related joint venture in LP Biosciences LLC (“LPB”) for industrial-scale hemp processing and extraction of winterized, decarbonized crude oils.

The plan objectives separately include monetizing over $25 million in non-strategic assets for funding these investments and their prospective growth. The specific performance objectives are shown under the Overview section above. The plan is designed to deliver significant per-share value increases over the next three years, while positioning the Company for continued growth thereafter.

Our annual operating expenditures, excluding depreciation and amortization, are planned at approximately $7.0 million, with approximately $2.0 million of that amount being reimbursed under the various Tonogold agreements, resulting in expected net operating expenses for 2021 of approximately $4.0 million.

During 2021, we expect to close the sale of the Silver Springs Properties for total proceeds of $10.1 million. The related agreements, as amended, included $0.4 million of non-refundable deposits released to the Company from escrow. We will use a portion of the proceeds from the sale to fund investments in LINICO, GenMat, MANA and LPB.

Our 2021 plans also include updating the Dayton’s current resource estimate and continuing southerly into Spring Valley with incremental exploration programs that include recently completed geophysical surveys, surface exploration and definition drilling of targets identified by the geophysical surveys, surface mapping, prior drilling and deeper geological interpretations that all lead to publishing a new, SK-1300 compliant, mineral resource estimate.

Our remaining 2021 plans include advancing the investment in and the commercialization of LINICO’s battery metal recycling operation, MANA and LPB industrial-scale hemp processing and extraction of winterized, decarbonized crude oils and MCU’s mercury remediation processing technologies.

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We expect to exercise our $2.5 million Warrant and increase our investment in our LINICO lithium-ion battery recycling venture during the third quarter, resulting in a majority stake in LINICO and consolidating LINICO’s financial results into our consolidated financial statements.

We expect to expand our assets to include the extraction and valorization of a portfolio of critical and inevitably scarce materials, including the recently announced acquisition of MANA, scheduled to be the largest U.S.-based industrial hemp processor and extractor of winterized, decarbonized crude oils. With an initial preference for high cash throughput generators that complement our existing competencies and operations, we also are evaluating an additional transaction that we hope to close during the third quarter of 2021.

Corporate Information

The Company’s executive offices are located at 117 American Flat Road, Virginia City, Nevada 89440 and its telephone number is (775) 847-5272. The Company’s mailing address is P.O. Box 1118, Virginia City, Nevada 89440. The Company’s website address is www.comstockmining.com. The Company’s website and the information contained on, or that can be accessed through, the website are not part of this prospectus.

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THE OFFERING

Common stock to be offered by us ................................	Shares of common stock, $0.000666 par value, per share, with an aggregate offering price of $5,000,000.
Manner of offering....................................…………….	“At-the-market” offering that may be made from time to time. See “Plan of Distribution” on page S-17.
Use of Proceeds .……………………………………...	We will use the net proceeds from this offering for strategic investments, capital and other general corporate purposes. See “Use of Proceeds.”
Risk Factors …………………………………………….	You should carefully read and consider the information set forth in “Risk Factors” beginning on the next page of this prospectus before investing in our common stock.
NYSE American LLC symbol………………………….	LODE

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RISK FACTORS

Investing in our common stock involves significant risk. Prior to making a decision about investing in our common stock, you should carefully consider the specific risk factors included below, as well as the risk factors discussed under the heading “Risk Factors” in the 2020 Form 10-K and the risk factors discussed under the heading “Risk Factors” in the Form 10-Qs, each of which are incorporated by reference in this prospectus supplement and the accompanying prospectus and may be amended, supplemented or superseded from time to time by other reports we file with the Commission in the future. The risks and uncertainties we have described are not the only ones we may face. Additional risks and uncertainties not currently known to us or that we currently deem immaterial may also affect our operations. If any of these risks actually occurs, our business, results of operations and financial condition could suffer. In that case, the trading price of our common stock decline, and you could lose all or a part of your investment.

Risks Relating to the Company’s Common Stock and this Offering

The Company may issue additional common stock or other equity securities in the future that could dilute the ownership interest of existing shareholders.

    The Company is currently authorized to issue 158,000,000 shares of common stock, of which 46,455,515 were issued and outstanding as of  June 30, 2021, respectively, and 50,000,000 shares of preferred stock, of which no Preferred Shares are issued or outstanding as June 30, 2021. To maintain its capital at desired levels or to fund future growth, the Board may decide from time to time to issue additional shares of common stock, or securities convertible into, exchangeable for or representing rights to acquire shares of common stock. The sale of these securities may significantly dilute stockholders’ ownership interest and the market price of the common stock. New investors in other equity securities issued by the Company in the future may also have rights, preferences and privileges senior to the Company’s current stockholders that may adversely impact its current stockholders.

You may experience immediate and substantial dilution in the net tangible book value per share of the common stock you purchase.

    If the price per share of our common stock is offered at price that is substantially higher than the net tangible book value per share of our common stock, you will suffer substantial dilution in the net tangible book value of the common stock you purchase in this offering. The net tangible book value of our common stock on June 30, 2021, was approximately $1.51 per share. Purchasing our common stock at a purchase price in excess of the net tangible book value per share, will result in you suffering an immediate and substantial dilution. See the section entitled “Dilution” in this prospectus for a more detailed discussion of the dilution you will incur if you purchase common stock in this offering.

If we are unable to maintain the listing standards of the NYSE American LLC, our common stock may be delisted, which may have a material adverse effect on the liquidity and value of our common stock.

    Our common stock is traded on the NYSE American LLC. To maintain our listing on the NYSE American LLC, we must meet certain financial and liquidity criteria. The market price of our common stock has been and may continue to be subject to significant fluctuation as a result of periodic variations in our revenues and results of operations. If we fail to meet any of the NYSE American LLC’s listing standards, we may be delisted. In the event of delisting, trading of our common stock would most likely be conducted in the over the counter market on an electronic bulletin board established for unlisted securities, which could have a material adverse effect on the market liquidity and value of our common stock.

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We will have broad discretion in how we use the proceeds, and we may use the proceeds in ways in which you and other stockholders may disagree.

    We intend to use the net proceeds from this offering for strategic development programs, working capital and other general corporate purposes. See the section entitled “Use of Proceeds.” Our management will have broad discretion in the application of the proceeds from this offering and could spend the proceeds in ways that do not necessarily improve our operating results or enhance the value of our common stock.

The market price of our common shares may be subject to fluctuations and volatility.

The market price of our common shares may fluctuate significantly due to, among other things, changes in market sentiment regarding our operations, financial results or business prospects, the mining, metals, recycling or environmental remediation industries generally, coordinated trading activities, large derivative positions or the macroeconomic outlook. Certain events or changes in the market or our industries generally are beyond our control. In addition to the other risk factors contained or incorporated by reference herein, factors that could impact our trading price include:

• our actual or anticipated operating and financial results, including how those results vary from the expectations of management, securities analysts and investors;

• changes in financial estimates or publication of research reports and recommendations by financial analysts or actions taken by rating agencies with respect to us or other industry participants;

• failure to declare dividends on our common stock from time to time;

• reports in the press or investment community generally or relating to our reputation or the financial services industry;

• developments in our business or operations or our industry sectors generally;

• any future offerings by us of our common stock;

• any coordinated trading activities or large derivative positions in our common stock, for example, a “short squeeze” (a short squeeze occurs when a number of investors take a short position in a stock and have to buy the borrowed securities to close out the position at a time that other short sellers of the same security also want to close out their positions, resulting in surges stock prices, i.e., demand is greater than supply for the stock sold shorted);

• legislative or regulatory changes affecting our industry generally or our business and operations specifically;

• the operating and stock price performance of companies that investors consider to be comparable to us;

• announcements of strategic developments, acquisitions, restructurings, dispositions, financings and other material events by us or our competitors;

• expectations of (or actual) equity dilution, including the actual or expected dilution to various financial measures, including earnings per share, that may be caused by this offering;

• actions by our current shareholders, including future sales of common shares by existing shareholders, including our directors and executive officers;

• proposed or final regulatory changes or developments;

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• anticipated or pending regulatory investigations, proceedings, or litigation that may involve or affect us; and

• other changes in U.S. or global financial markets, global economies and general market conditions, such as interest or foreign exchange rates, stock, commodity prices, credit or asset valuations or volatility.

USE OF PROCEEDS

We estimate that the net proceeds we will receive from this offering will not exceed a maximum of $5,000,000, and we estimate offering expenses of approximately $15,000.

We will use the net proceeds from this offering for strategic investments, working capital and other general corporate purposes. See “Use of Proceeds.”

Pending the application of the net proceeds as described above, we may invest the net proceeds from this offering in short-term, investment grade, interest-bearing securities.

DILUTION

Investors in shares of our common stock offered in this offering will experience an immediate dilution in the net tangible book value of their common stock from the public offering price of the common stock. The net tangible book value of our common stock as of June 30, 2021, was approximately $70.3 million, or approximately $1.51 per share of common stock. Net tangible book value per share of our common stock is calculated by subtracting our total liabilities from our total tangible assets (which is equal to total assets less intangible assets) and dividing this amount by the number of shares of common stock outstanding as of such date.

Dilution per share represents the difference between the public offering price per share of our common stock and the adjusted net tangible book value per share of our common stock included in this offering after giving effect to this offering. Any sale of our common stock in this offering at a price per share greater than the net tangible book value per share will result in (after giving effect to such sale and deducting discounts, commissions estimated offering expenses payable by us) an increase in our as adjusted net tangible book value per share of common stock with respect to our existing stockholders and an immediate and substantial dilution in net tangible book value per share of common stock to new investors purchasing shares in this offering.

PLAN OF DISTRIBUTION

We have entered into an equity purchase agreement with Leviston Resources LLC, or the Investor, under which we may offer and sell shares of our common stock through this prospectus having an aggregate gross sales price of up to $5,000,000. Upon delivery of a put notice and subject to the terms and conditions of the equity purchase agreement, we will sell such shares of common stock to the Investor at a purchase price equal to lowest intra-day reported sales price of the common stock on the date of the delivery of a put notice multiplied by 90.0%. Accordingly, we estimate that the total gross proceeds from this offering will be approximately $5,000,000.

The number of shares that may be sold pursuant to any put notice cannot exceed 500% of the average of the three lowest trading day’s volume the common stock for the ten-trading-day-period consisting of the date of a put notice and the four trading days preceding such put notice. Put notices can be rejected in whole or part if the closing market price of the common stock decreases by more than 6% on the first trading day following the delivery of a put notice. Investor will not be obligated to purchase shares if the trading volume of the common stock on the trading day immediately following a put notice is less than 40,000 shares. Shares sold in any calendar month are not

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permitted to exceed $750,000. The Company cannot generally submit more than one put notice in any five day period. In addition, the Investor will be not be required to purchase shares in excess of 19.99% of the Company’s issued and outstanding shares at any given time.

We estimate the total expenses of this offering, excluding the discount to the Investor, will be approximately $15,000. In consideration of the Investor’s agreement to enter the equity purchase agreement, we agreed to deliver additional shares of our common stock with value of $250,000 to the Investor, for no additional consideration, on the first settlement date with respect to a put notice delivered by the Company. We also agreed to provide “most favored nation” status to the Investor with respect to other equity offerings conducted within five trading days of a sale under the equity purchase agreement. We have agreed to include a portion of such shares on any registration statement filed by us during the term of the equity purchase agreement. We have also agreed to provide indemnification and contribution with respect to certain liabilities, including liabilities under the Securities Act.

The Investor may be an “underwriter” within the meaning of the Securities Act and any broker-dealers or agents that are involved in selling the shares may also be deemed to be “underwriters” within the meaning of the Securities Act in connection with such sales. In such event, any commissions received by such broker-dealers or agents and any profit on the resale of the shares purchased by them may be deemed to be underwriting commissions or discounts under the Securities Act. Because the Investor may be an “underwriter” within the meaning of the Securities Act, the Investor will be subject to the prospectus delivery requirements of the Securities Act. This prospectus may be made available and distributed to investors in electronic format.

Under applicable rules and regulations under the Exchange Act, any person engaged in the distribution of the resale securities may not simultaneously engage in market making activities with respect to the common stock for the applicable restricted period, as defined in Regulation M, prior to the commencement of the distribution. In addition, the Investor will be subject to applicable provisions of the Exchange Act and the rules and regulations thereunder, including Regulation M, which may limit the timing of purchases and sales of securities of the common stock by the Investor.

Although the Investor has agreed not to enter into any “short sales” of our common stock, sales after delivery of a put notice of a number of shares reasonably expected to be purchased under a put notice shall not be deemed a “short sale.” Accordingly, the Investor may enter into arrangements it deems appropriate with respect to sales of shares of our common stock after it receives a put notice under the equity purchase agreement so long as such sales or arrangements do not involve more than the number of put shares reasonably expected to be purchased by the Investor under such put notice.

Settlement for sales of common stock will occur six business days following the date on which we deliver a put notice to the Investor in connection with a particular transaction, in return for payment of the net proceeds to us. Sales of our common stock as contemplated in this prospectus will be settled through the facilities of The Depository Trust Company or by such other means as we and the Investor may agree upon. There is no arrangement for funds to be received in an escrow, trust or similar arrangement.

The offering of our common stock pursuant to the equity purchase agreement will terminate upon termination of the equity purchase agreement as permitted therein.

Any portion of the $5,000,000 included in this prospectus supplement that is not previously sold or included in a put notice pursuant to the equity purchase agreement is available for sale in other offerings pursuant to the base prospectus.

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The Investor and its affiliates may in the future provide various investment banking, commercial banking and other financial services for us and our affiliates, for which services they may in the future receive customary fees.

Listing and Transfer Agent

Our common stock is listed on the NYSE American under the symbol “LODE.” We have submitted an application to the NYSE American to list the shares of common stock offered hereby. The transfer agent and registrar for our common stock is Equiniti, located at 1110 Centre Pointe Curve, Suite 101, Mendota Heights, MN 55120-4100. Its telephone number is (303) 282-4800.

LEGAL MATTERS

The validity of the issuance of the securities offered in this offering has been passed upon for us by McDonald Carano, LLP, Reno, Nevada.

EXPERTS

The consolidated financial statements for the fiscal year ended December 31, 2019 and December 31, 2020, incorporated in this Prospectus by reference from the 2020 Form 10-K have been audited by Deloitte & Touche LLP and Assure CPA, LLC, respectively, each of which is an independent registered public accounting firm, as stated in their respective reports, which are incorporated herein by reference. Such consolidated financial statements have been so incorporated in reliance upon the reports of such firms given upon their authority as experts in accounting and auditing.

No expert or counsel named in this prospectus as having prepared or certified any part thereof or having given an opinion upon the validity of the securities being registered or upon other legal matters in connection with the registration or offering of our Common Stock was employed on a contingency basis or had or is to receive, in connection with the offering, a substantial interest, directly or indirectly, in us. Additionally, no such expert or counsel was connected with us as a promoter, managing or principal underwriter, voting trustee, director, officer or employee.

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PROSPECTUS

$50,000,000

Common Stock

Preferred Stock

Debt Securities

Rights

Units

Warrants

    From time to time, we may offer up to an aggregate of $50,000,000 of any combination of the securities described in this prospectus, either individually or in units. We may also offer shares of our $0.000666 par value, per share common stock (“Common Stock”) or preferred stock upon conversion of debt securities, Common Stock upon conversion of preferred stock, or Common Stock, preferred stock or debt securities upon the exercise of warrants. We will provide the specific terms of these offerings and securities in one or more supplements to this prospectus. We may also authorize the provision to you of one or more free writing prospectuses in connection with these offerings. The prospectus supplement and any related free writing prospectus may also add, update or change information we include in this prospectus. You should carefully read this prospectus, the applicable prospectus supplement and any related free writing prospectus, as well as any documents we incorporate by reference, before buying any of the securities being offered.

    You should read this prospectus and any applicable prospectus supplement, as well as the documents incorporated by reference or deemed incorporated by reference into this prospectus and any prospectus supplement, carefully before you invest in our shares.

    We may offer and sell the securities described in this prospectus and any prospectus supplement to or through one or more underwriters, dealers and agents, or directly to purchasers, or through a combination of these methods. If any underwriters, dealers or agents are involved in the sale of any of the securities, their names and any applicable purchase price, fee, commission or discount arrangement between or among them will be set forth, or will be calculable from the information set forth, in the applicable prospectus supplement. See the sections of this prospectus entitled “About this Prospectus” and “Plan of Distribution” for more information. No securities may be sold without delivery of this prospectus and the applicable prospectus supplement describing the method and terms of the offering of such securities.

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    Our common stock is listed on the NYSE AMERICAN LLC under the symbol "LODE." The last reported price of our common stock on the NYSE AMERICAN LLC on February 19, 2019 was $0.1584 per share. The aggregate market value of our outstanding voting common stock held by non-affiliates, based upon a closing sale price of our common stock on June 30, 2018 was $12,166,352. During the 12 calendar month period that ends on, and includes, the date of this prospectus, we have offered securities with an aggregate offering price of $1,600,483 pursuant to General Instruction I.B.6. of Form S-3. Pursuant to General Instruction I.B.6 of Form S-3, in no event will we sell securities registered on this registration statement in a public primary offering with a value exceeding more than one-third of the aggregate market value of the voting and non-voting common equity in any 12 month period so long as our public float remains below $75 million.

    Investing in our securities involves risks that are referenced in the “Risk Factors” section, at page [*], of this prospectus and are set forth in our periodic reports filed with the Securities and Exchange Commission.

    Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

____________________

The date of this prospectus is February 26, 2019

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ABOUT THIS PROSPECTUS

    This prospectus is part of a registration statement that we filed with the Securities and Exchange Commission, or the Commission, utilizing a “shelf” registration process. Under this shelf registration process, we may, from time to time, offer and sell securities pursuant to this prospectus. This prospectus provides you with a general description of the securities we may offer.

    Each time we offer and sell our securities, we will provide a prospectus supplement that will contain specific information about the terms of the specific securities being offered and which may add, update or change information in this prospectus. If there is any inconsistency between the information in this prospectus and the applicable prospectus supplement, you must rely on the information in the prospectus supplement. You should read carefully both this prospectus and any prospectus supplement, together with additional information described below under “Where You Can Find More Information” before you invest in our securities.

    You should rely only on the information contained or incorporated by reference in this prospectus, any prospectus supplement or any free writing prospectus related to the applicable securities that is prepared by us or on our behalf or that is otherwise authorized by us. We have not authorized any other person to provide you with additional or different information. If anyone provides you with additional, different or inconsistent information, you should not rely on it. This prospectus is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information contained in this prospectus and the accompanying prospectus supplement is accurate on any date subsequent to the date set forth on the front of the document or that any information that we have incorporated by reference is correct on any date subsequent to the date of the document incorporated by reference. Our business, financial condition, results of operation and prospects may have changed since those dates.

    We will not use this prospectus to offer and sell securities unless it is accompanied by a prospectus supplement that more fully describes the securities being offered and the terms of the offering.

    This prospectus does not contain all the information provided in the registration statement we filed with the Commission. For further information about us or the securities offered hereby, you should refer to that registration statement, which you can obtain from the Commission as described below under “Where You Can Find More Information.”

    In this prospectus, unless otherwise specified or the context otherwise requires, “Comstock,” “we,” “us” and “our,” “our Company” or the “Company” refer to Comstock Mining Inc. and its consolidated subsidiaries. In addition, unless the context requires otherwise, reference to the “Board” refers to the Board of Directors of Comstock Mining Inc.

WHERE YOU CAN FIND MORE INFORMATION

We are required to file periodic reports, proxy statements and other information relating to our business, financial and other matters with the Commission under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Our filings are available to the public over the Internet at the Commission’s web site at http://www.sec.gov. You may also read and copy any document we file with the Commission at, and obtain a copy of any such document by mail from, the Commission’s public reference room located at 100 F Street, N.E., Washington, D.C. 20549, at prescribed charges. Please call the Commission at 1-800-SEC-0330 for further information on the public reference room and its charges.

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We have filed with the Commission a registration statement on Form S-3 under the Securities Act with respect to our securities described in this prospectus. References to the “registration statement” or the “registration statement of which this prospectus is a part” mean the original registration statement and all amendments, including all schedules and exhibits. This prospectus does, and any prospectus supplement will, not contain all of the information in the registration statement because we have omitted parts of the registration statement in accordance with the rules of the Commission. Please refer to the registration statement for any information in the registration statement that is not contained in this prospectus or a prospectus supplement. The registration statement is available to the public over the Internet at the Commission’s web site described above and can be read and copied at the locations described above.

Each statement made in this prospectus or any prospectus supplement concerning a document filed as an exhibit to the registration statement is qualified in its entirety by reference to that exhibit for a complete description of its provisions.

We make available, free of charge, on or through our web site, copies of our proxy statements, our annual reports on Form 10-K, our quarterly reports on Form 10-Q, our current reports on Form 8-K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act as soon as reasonably practicable after we electronically file them with or furnish them to the Commission. We maintain a web site at http://www.comstockmining.com. The information contained on our web site is not part of this prospectus, any prospectus supplement or the registration statement.

INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

We have filed the following documents with the Commission pursuant to the Exchange Act and hereby incorporate them by reference in the registration statement:

We incorporate by reference the documents listed below and any future documents that we file with the Commission under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act after the date of this prospectus supplement:

(a) Our annual report on Form 10-K for the fiscal year ended December 31, 2018, filed with the Commission on February 26, 2019 (the “2018 Form 10-K”);

(b) Our current report on Form 8-K filed with the Commission on January 29, 2019;

(c) The description of our Common Stock contained in our Form 8-A (File No. 001-35200), filed with the Commission under Section 12 of the Exchange Act on June 8, 2011 (the “Form 8-A”);

All documents subsequently filed by us with the Commission pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a post-effective amendment which indicates that all securities offered have been sold or which deregisters all securities then remaining unsold, shall be deemed to be incorporated by reference in the registration statement and to be a part hereof from the date of filing of such documents.

We make available copies of the documents incorporated by reference in this prospectus to each person, including any beneficial owner, to whom a prospectus is delivered, without charge, upon written or oral request. Such requests should be directed to:

Comstock Mining Inc.

P.O. Box 1118

Virginia City, Nevada 89440

Attention: Judd Merrill, Chief Financial Officer

Telephone: (775) 847-7325

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SUMMARY

This summary highlights information contained elsewhere or incorporated by reference in this prospectus and does not contain all of the information you should consider in making your investment decision. You should read this summary together with the more detailed information included elsewhere or incorporated by reference in this prospectus, including financial statements and the related notes. You should carefully consider, among other things, the matters discussed under “Risks Factors” in the 2018 Form 10-K and in other documents that we subsequently file with the Commission that are incorporated by reference herein.

The Company

The Company is a Nevada-based, gold and silver mining exploration, development and production company with extensive, contiguous property in the historic Comstock and Silver City mining districts (collectively, the “Comstock District”) and additional mining, commercial and industrial properties located in Storey and Lyon Counties, Nevada. The Comstock District is located within the western portion of the Basin and Range Province of Nevada, near Reno and Carson City. The Company began acquiring properties and developing projects in the Comstock District in 2003. Since then, the Company has consolidated a substantial portion of the historic Comstock District, secured permits, built an infrastructure and brought exploration projects into production.

The Company and its subsidiaries now own or control approximately 9,358 acres of mining claims and parcels in the Comstock District and surrounding area. The acreage includes approximately 2,396 acres of patented claims and surface parcels (private lands) and approximately 6,962 acres of unpatented mining claims (public lands), which the Bureau of Land Management (“BLM”) administers. The Company's headquarters is in Gold Hill, Nevada, on a five-acre parcel at the intersection of American Flat road and State Route 342.

Because of the Comstock District’s historical significance, the geology is well known and has been extensively studied by the Company, our advisors and many independent researchers. We have expanded our understanding of the geology through vigorous surface mapping and drill hole logging. The volume of geologic data is immense, particularly in the Lucerne and Dayton resource areas. We have amassed a large library of historical data and detailed surface mapping of Comstock District properties. We integrate such data with information obtained from our recent mining operations, to target geological prospective exploration areas and plan exploratory drilling programs, including expanded surface and underground drilling.

The Company continues exploring and acquiring properties, expanding its footprint and evaluating all of our existing and prospective opportunities for further exploration, development and mining. The near-term goal of our business plan is to maximize intrinsic stockholder value realized, per share, by continuing to acquire and develop mineralized and potentially mineralized properties, exploring, developing and validating qualified resources (measured, indicated and inferred) and reserves (proven and probable) that enable the commercial development of our properties through extended, long-lived mine plans that are economically feasible and socially responsible, including mine plans for both the Lucerne and Dayton resource areas, with both surface and underground development opportunities.

Our Dayton resource area and the adjacent Spring Valley exploration targets are located in Lyon County, Nevada, approximately six miles south of Virginia City. Access to the properties is by State Routes 341 and 342, both paved roads.

Our Lucerne resource area is located in Storey County, Nevada, approximately three miles south of Virginia City and 30 miles southeast of Reno. The Lucerne resource area was host to the Company’s most-recent test mining operations from 2012 through 2016. The heap processing facility for gold and silver is in American Flat,

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approximately three quarters of a mile west of the Lucerne mine. The heap leach facility was redesigned and expanded in late 2013 and again in the fourth quarter of 2014, to accommodate future production plans.

The Company achieved initial production and held its first pour of gold and silver on September 29, 2012. The Company ceased mining in 2015 and completed processing in 2016, and accordingly did not have any gold or silver production or mining revenue during 2017 or 2018. From 2012 through 2016, the Company mined and processed approximately 2.6 million tons of mineralized material, and produced 59,515 ounces of gold and 735,252 ounces of silver.

The Company's exploration and development activities to date have focused on less than 10% of our extensive Comstock District properties. We continue to develop longer-term exploration plans for additional exploration targets. In addition to targets in our Lucerne and Dayton resource areas, some of the more promising exploration targets include the Spring Valley group, Occidental group and Gold Hill group.

The Company’s real estate segment owns significant non-mining properties, including the Gold Hill Hotel, rentable homes and cottages in Gold Hill and Silver City, Nevada, the 225-acre Daney Ranch in Dayton, Nevada and a 98-acre, certified industrial park site in Silver Springs, Nevada, including senior water rights. The Gold Hill Hotel includes a historic, operating hotel, restaurant and bar. In 2015, the Company entered into an agreement to lease the Gold Hill Hotel to independent operators while retaining ownership. The initial term of the lease agreement was effective on April 1, 2015, and ends in March 2020. The tenant may renew the lease for two extended terms of five years each. Lease payments are due in monthly installments.

Current Projects

The Company has identified many exploration targets on its land holdings in the Comstock District, but has focused, to date, on the Dayton resource area and the Lucerne resource area (including surface and underground exploration). We are working to develop comprehensive exploration plans for the remaining areas, which include the Spring Valley group, Occidental group, and Gold Hill group of exploration targets. Exploration activities will proceed subsequent to and in some cases concurrent with the ongoing exploration and development of the Dayton and Lucerne resource areas.

 The Dayton resource area is south of Virginia City in Lyon County, Nevada. It generally includes the historic Dayton, Kossuth and Alhambra patents, including the old Dayton Consolidated mine workings, south to where the Kossuth patent crosses State Route 341. The historic Dayton mine was the last meaningful underground mining operation in the Comstock District, before being closed after the War Production Board published Limitation Order L-208, 7 F. R. 7992 on October 8, 1942, that closed down all gold mining operations in the United States and its territories. The Dayton resource area ranks as one of the Company’s top exploration and potential mine development targets. In January 2014, the Lyon County Board of Commissioners approved strategic master plan and zoning changes on the Dayton, Kossuth and Alhambra mining patents and other properties located in the Dayton resource area, enabling a more practical, comprehensive feasibility study for mining. Geological studies and development planning are currently underway utilizing data from extensive metallurgical testing and assessment during 2017, 30,818 feet of additional drilling completed in 2015, geophysical analysis and interpretation completed in 2013, and extensive geological data from pre-2013, drill programs.

The Spring Valley group of exploration targets lies adjacent to the Dayton resource area at the southern end of the Comstock District, where the mineralized structures, trending to the south from the Dayton resource area, lie mostly concealed beneath a veneer of sediment gravels. The area includes the Kossuth patented claim south of State Route 341, the Dondero patented property, the Daney patented claim, the New Daney lode mining claims, and the Company’s placer mining claims in Spring Valley and Gold Canyon.

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The Lucerne resource area has been the primary focus of the Company’s exploration and development efforts since 2007. It includes the previously mined Billie the Kid, Hartford and Lucerne mining patents, and extends east and northeasterly to the area of the historic Woodville (southern-most of the historic Comstock bonanzas), Succor and Lager Beer patents and north to the historic Justice and Keystone mines. The Lucerne resource area is approximately one mile along strike, with explored widths from 600 to 1,800 feet, representing less than three percent of the land holdings controlled by the Company. The Lucerne is the site of our previous mining activities and ongoing exploration program, and the Company holds the key mining permits required to resume surface or underground mining this area.

Our Lucerne exploration activities included open pit gold and silver test mining from 2004, through 2006, and from late 2012 through 2016. As defined by the Securities Exchange Commission (“SEC”) Industry Guide 7, we have not yet established any proven or probable reserves at our Lucerne mine.

On October 3, 2017, the Company entered into an Option Agreement (the “Option Agreement”) with Tonogold Resources, Inc. (“Tonogold”). Under the terms of the Option Agreement, Tonogold has the right to lead in certain activities, including engineering, development, drilling and test-work, towards completing a technical and economic feasibility assessment on properties within the Lucerne resource area (the “Lucerne Property”). If all obligations and prerequisites are satisfied and subject to compliance with the Option Agreement, Comstock and Tonogold may effect a joint venture for the future development and mining of mineral resources in the Lucerne Property.

Under the terms of the Option Agreement, Tonogold can earn a 51% interest in the Company’s wholly-owned subsidiary, Comstock Mining LLC, which owns the Lucerne Property, by making $20 million in capital expenditures on the Lucerne Property within 42 months following signing of the Option Agreement. If Tonogold meets all of the prerequisites, Tonogold is also granted the option to purchase 51% of the Company’s American Flat property, plant and equipment for an additional purchase price of $25 million. Tonogold is in compliance with all terms of the agreement.

On January 24, 2019, the Company entered into a definitive agreement and received a $1 million non-refundable payment toward the sale of its wholly-owned subsidiary, Comstock Mining LLC, which owns the Lucerne properties (~1200 acres) to Tonogold for $15 million in cash, relief of $8 million in future Northern Comstock LLC (“Northern Comstock”) lease and reclamation obligations, a permanent reduction of annual operating expenses by $1 million and a retained 1.5% net smelter return royalty on Lucerne. Upon closing, the Company will transfer the ownership of Comstock Mining LLC and hence control of the Lucerne properties, and related permits and retain ownership and/or control of the remaining land position in the Comstock district. The Company expects the transaction to close by May 31, 2019.

The Company and Tonogold also agreed that, upon the closing of the sale of the Lucerne mine properties, it will enter into a new Option Agreement to lease its permitted American Flat property, plant and equipment to Tonogold for crushing, leaching and processing material from the Lucerne mine. If the option is exercised, Tonogold will pay the Company a rental fee of $1 million per year plus $1 per processed ton, in addition to all the costs of operating and maintaining the facility, up to and until the first $15 million in rental fees are paid, and then stepping down to $1 million per year and $0.50 per processed ton for the next $10 million paid to Comstock, and then stepping down again, after the first $25 million of revenue is received, to $0.25 cents per processed ton, with no annual rental fee but with a $100,000 per quarter minimum revenue. Tonogold will reimburse American Flat expenses of approximately $1.1 million during the option life.

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Upon closing, these agreements will replace the October 2017 Option Agreement between the Company and Tonogold. The October 2017 agreement will remain in place until the sale of the Lucerne mine closes. Tonogold has met all the spending commitments to date and has been working with Mine Development Associates (“MDA”) of Reno to produce a new resource model and an NI 43-101 technical report on the Lucerne project. Tonogold reimbursed the Company $1.2 million during 2018, in addition to the $2 million received for the 2018 option payment and the $1 million non-refundable payment received on January 24, 2019.

The Company, upon closing, will enter into a ten-year Mineral Lease for additional mineral properties in Storey County, Nevada, granting Tonogold the right to explore, develop and mine these properties. Tonogold will assume approximately $100 thousand in annual costs and will assume work commitments totaling over $200 thousand in 2019. Comstock will retain a 3% net smelter return royalty on these additional leased properties, which will be reduced to 1.5%, one year after the commencement of mining operations. The lease is renewable for an additional ten-year term.

The Occidental group and Gold Hill group of exploration targets represent longer-term exploration target areas that contain many historic mining operations, including the Overman, Con Imperial, Caledonia, and Yellow Jacket mines. We believe that our consolidation of the Comstock District has provided us with opportunities to utilize the historical information available to identify drilling targets with significant potential.

Corporate Information

The Company’s executive offices are located at 1200 American Flat Road, Virginia City, Nevada 89440 and its telephone number is (775) 847-7325. The Company’s mailing address is P.O. Box 1118, Virginia City, Nevada 89440. The Company’s website address is www.comstockmining.com. The Company’s website and the information contained on, or that can be accessed through, the website are not part of this prospectus.

FORWARD LOOKING STATEMENTS

The information appearing under “Cautionary Notice Regarding Forward Looking Statements” in the 2018 Form 10-K, is hereby incorporated by reference.

RISK FACTORS

Investment in any securities offered pursuant to this prospectus and the applicable prospectus supplement involves risks. You should carefully consider the risk factors incorporated by reference to the 2018 Form 10-K or periodic reports we file after the date of this prospectus, and all other information contained or incorporated by reference into this prospectus, as updated by our subsequent filings under the Exchange Act, and the risk factors and other information contained in the applicable prospectus supplement before acquiring any of such securities. The occurrence of any of these risks might cause you to lose all or part of your investment in the offered securities.

USE OF PROCEEDS

Except as may be described otherwise in any applicable prospectus supplement or free writing prospectus, we will use the net proceeds from the sale by us of the securities under this prospectus for general corporate purposes, which may include, among other things, funding acquisitions, capital expenditures and general corporate purposes.

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DESCRIPTION OF COMMON STOCK

The information appearing under “Item 1. Description of Registrant’s Securities to be Registered” in the Form 8-A, is hereby incorporated by reference. The Company currently has 80,790,273 shares of Common Stock issued and outstanding.

DESCRIPTION OF PREFERRED STOCK

Pursuant to our articles of incorporation, the Board has the authority, without further action by the stockholders (unless such stockholder action is required by applicable law or NYSE AMERICAN rules), to designate and issue up to 50,000,000 shares of preferred stock in one or more series or classes, to establish from time to time the number of shares to be included in each such series or classes, and to fix the rights, privileges and preferences of such series or classes. The Company currently has no issued and outstanding shares of preferred stock.

The Board will fix the rights, privileges and preferences of the preferred stock of each series or class, as well as the qualifications, limitations or restrictions thereon, in the certificate of designation relating to that series. We will file as an exhibit to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the Commission, the form of any certificate of designation that describes the terms of the series of preferred stock we are offering before the issuance of that series of preferred stock. This description will include:

•the number of shares we are offering;

•the liquidation preference per share;

•the purchase price;

•the dividend rate, period and payment date and method of calculation for dividends;

•whether dividends will be cumulative or non-cumulative and, if cumulative, the date from which dividends will accumulate;

•the procedures for any auction and remarketing, if any;

•the provisions for a sinking fund, if any;

•the provisions for redemption or repurchase, if applicable, and any restrictions on our ability to exercise those redemption and repurchase rights;

•any listing of the preferred stock on any securities exchange or market;

•whether the preferred stock will be convertible into our Common Stock, and, if applicable, the conversion price, or how it will be calculated, and the conversion period;

•whether the preferred stock will be exchangeable into debt securities, and, if applicable, the exchange price, or how it will be calculated, and the exchange period;

•voting rights, if any, of the preferred stock;

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•preemptive rights, if any;

•restrictions on transfer, sale or other assignment, if any;

•whether interests in the preferred stock will be represented by depositary shares;

•a discussion of any material United States federal income tax considerations applicable to the preferred stock;

•the relative ranking and preferences of the preferred stock as to dividend rights and rights if we liquidate, dissolve or wind up our affairs;

•any limitations on the issuance of any class or series of preferred stock ranking senior to or on a parity with the series of preferred stock as to dividend rights and rights if we liquidate, dissolve or wind up our affairs; and

•any other specific terms, preferences, rights or limitations of, or restrictions on, the preferred stock.

The Board may authorize the issuance of preferred stock with voting or conversion rights that could adversely affect the voting power or other rights of the holders of our Common Stock. Preferred stock could be issued quickly with terms designed to delay or prevent a change in control of our company or make removal of management more difficult. Additionally, the issuance of preferred stock may have the effect of decreasing the market price of our Common Stock.

DESCRIPTION OF DEBT SECURITIES

We may issue debt securities, in one or more series, as either senior or subordinated debt or as senior or subordinated convertible debt. Pursuant to the terms of our outstanding indebtedness and a Stockholders Agreement with our largest shareholder, we are prohibited from issuing debt without the prior written consent. While the terms we have summarized below will apply generally to any debt securities that we may offer under this prospectus, we will describe the particular terms of any debt securities that we may offer in more detail in the applicable prospectus supplement. The terms of any debt securities offered under a prospectus supplement may differ from the terms described below. Unless the context requires otherwise, whenever we refer to the indentures, we also are referring to any supplemental indentures that specify the terms of a particular series of debt securities.

We will issue the senior debt securities under the senior indenture that we will enter into with the trustee named in the senior indenture. We will issue the subordinated debt securities under the subordinated indenture that we will enter into with the trustee named in the subordinated indenture. Generally, the indentures will be qualified under the Trust Indenture Act of 1939. We use the term “debenture trustee” to refer to either the trustee under the senior indenture or the trustee under the subordinated indenture, as applicable. We will file forms of indentures to the registration statement of which this prospectus is a part, and supplemental indentures and forms of debt securities containing the terms of the debt securities being offered will be filed as exhibits to the registration statement of which this prospectus is a part or will be incorporated by reference from reports that we file with the Commission.

The following summaries of material provisions of the senior debt securities, the subordinated debt securities and the indentures are subject to, and qualified in their entirety by reference to, all of the provisions of the indenture applicable to a particular series of debt securities. We urge you to read the applicable prospectus supplements and any related free writing prospectuses related to the debt securities that we may offer under this prospectus, as well as

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the complete indentures that will contain the terms of the debt securities. Except as we may otherwise indicate, the terms of the senior indenture and the subordinated indenture are identical.

General

We will describe in the applicable prospectus supplement the terms of the series of debt securities being offered, including:

•the title;

•whether or not such debt securities are guaranteed by our subsidiaries or other entities;

•the principal amount being offered, and if a series, the total amount authorized and the total amount outstanding;

•any limit on the amount that may be issued;

•whether or not we will issue the series of debt securities in global form, the terms and who the depositary will be;

•the maturity date;

•whether and under what circumstances, if any, we will pay additional amounts on any debt securities held by a person who is not a United States person for tax purposes, and whether we can redeem the debt securities if we have to pay such additional amounts;

•the annual interest rate, which may be fixed or variable, or the method for determining the rate and the date interest will begin to accrue, the dates interest will be payable and the regular record dates for interest payment dates or the method for determining such dates;

•whether or not the debt securities will be secured or unsecured, and the terms of any secured debt;

•the terms of the subordination of any series of subordinated debt;

•the place where payments will be payable;

•restrictions on transfer, sale or other assignment, if any;

•our right, if any, to defer payment of interest and the maximum length of any such deferral period;

•the date, if any, after which, and the price at which, we may, at our option, redeem the series of debt securities pursuant to any optional or provisional redemption provisions and the terms of those redemption provisions;

•the date, if any, on which, and the price at which we are obligated, pursuant to any mandatory sinking fund or analogous fund provisions or otherwise, to redeem, or at the holder’s option to purchase, the series of debt securities and the currency or currency unit in which the debt securities are payable;

•whether the indenture will restrict our ability and/or the ability of our subsidiaries to:

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•incur additional indebtedness;

•issue additional securities;

•create liens;

•pay dividends and make distributions in respect of our capital stock and the capital stock of our subsidiaries;

•redeem capital stock;

•place restrictions on our subsidiaries’ ability to pay dividends, make distributions or transfer assets;

•make investments or other restricted payments;

•sell or otherwise dispose of assets;

•enter into sale-leaseback transactions;

•engage in transactions with stockholders and affiliates;

•issue or sell stock of our subsidiaries; or

•effect a consolidation or merger;

•whether the indenture will require us to maintain any interest coverage, fixed charge, cash flow-based, asset-based or other financial ratios;

•a discussion of any material United States federal income tax considerations applicable to the debt securities;

•information describing any book-entry features;

•provisions for a sinking fund purchase or other analogous fund, if any;

•the applicability of the provisions in the indenture on discharge;

•whether the debt securities are to be offered at a price such that they will be deemed to be offered at an “original issue discount” as defined in paragraph (a) of Section 1273 of the Internal Revenue Code;

•the denominations in which we will issue the series of debt securities, if other than denominations of $1,000 and any integral multiple thereof;

•the currency of payment of debt securities if other than U.S. dollars and the manner of determining the equivalent amount in U.S. dollars; and

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•any other specific terms, preferences, rights or limitations of, or restrictions on, the debt securities, including any additional events of default or covenants provided with respect to the debt securities, and any terms that may be required by us or advisable under applicable laws or regulations.

Conversion or Exchange Rights

We will set forth in the prospectus supplement the terms on which a series of debt securities may be convertible into or exchangeable for our Common Stock or our other securities. We will include provisions as to whether conversion or exchange is mandatory, at the option of the holder or at our option. We may include provisions pursuant to which the number of shares of our Common Stock or our other securities that the holders of the series of debt securities receive would be subject to adjustment.

Consolidation, Merger or Sale

Unless we provide otherwise in the prospectus supplement applicable to a particular series of debt securities, the indentures will not contain any covenant that restricts our ability to merge or consolidate, or sell, convey, transfer or otherwise dispose of all or substantially all of our assets. However, any successor to or acquirer of such assets must assume all of our obligations under the indentures or the debt securities, as appropriate. If the debt securities are convertible into or exchangeable for our other securities or securities of other entities, the person with whom we consolidate or merge or to whom we sell all of our property must make provisions for the conversion of the debt securities into securities that the holders of the debt securities would have received if they had converted the debt securities before the consolidation, merger or sale.

Events of Default Under the Indenture

Unless we provide otherwise in the prospectus supplement applicable to a particular series of debt securities, the following are events of default under the indentures with respect to any series of debt securities that we may issue:

•if we fail to pay interest when due and payable and our failure continues for 90 days and the time for payment has not been extended or deferred;

•if we fail to pay the principal, premium or sinking fund payment, if any, when due and payable and the time for payment has not been extended or delayed;

•if we fail to observe or perform any other covenant contained in the debt securities or the indentures, other than a covenant specifically relating to another series of debt securities, and our failure continues for 90 days after we receive notice from the debenture trustee or holders of at least 25% in aggregate principal amount of the outstanding debt securities of the applicable series; and

•if specified events of bankruptcy, insolvency or reorganization occur.

If an event of default with respect to debt securities of any series occurs and is continuing, other than an event of default specified in the last bullet point above, the debenture trustee or the holders of at least 25% in aggregate principal amount of the outstanding debt securities of that series, by notice to us in writing, and to the debenture trustee if notice is given by such holders, may declare the unpaid principal of, premium, if any, and accrued interest, if any, due and payable immediately. If an event of default specified in the last bullet point above occurs with respect to us, the principal amount of and accrued interest, if any, of each issue of debt securities then

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outstanding shall be due and payable without any notice or other action on the part of the debenture trustee or any holder.

The holders of a majority in principal amount of the outstanding debt securities of an affected series may waive any default or event of default with respect to the series and its consequences, except defaults or events of default regarding payment of principal, premium, if any, or interest, unless we have cured the default or event of default in accordance with the indenture. Any waiver shall cure the default or event of default.

Subject to the terms of the indentures, if an event of default under an indenture shall occur and be continuing, the debenture trustee will be under no obligation to exercise any of its rights or powers under such indenture at the request or direction of any of the holders of the applicable series of debt securities, unless such holders have offered the debenture trustee reasonable indemnity. The holders of a majority in principal amount of the outstanding debt securities of any series will have the right to direct the time, method and place of conducting any proceeding for any remedy available to the debenture trustee, or exercising any trust or power conferred on the debenture trustee, with respect to the debt securities of that series, provided that:

•the direction so given by the holder is not in conflict with any law or the applicable indenture; and

•subject to its duties under the Trust Indenture Act of 1939, the debenture trustee need not take any action that might involve it in personal liability or might be unduly prejudicial to the holders not involved in the proceeding.

A holder of the debt securities of any series will have the right to institute a proceeding under the indentures or to appoint a receiver or trustee, or to seek other remedies only if:

•the holder has given written notice to the debenture trustee of a continuing event of default with respect to that series;

•the holders of at least 25% in aggregate principal amount of the outstanding debt securities of that series have made written request, and such holders have offered reasonable indemnity to the debenture trustee to institute the proceeding as trustee; and

•the debenture trustee does not institute the proceeding, and does not receive from the holders of a majority in aggregate principal amount of the outstanding debt securities of that series other conflicting directions within 90 days after the notice, request and offer.

These limitations do not apply to a suit instituted by a holder of debt securities if we default in the payment of the principal, premium, if any, or interest on, the debt securities.

We will periodically file statements with the debenture trustee regarding our compliance with specified covenants in the indentures.

Modification of Indenture; Waiver

We and the debenture trustee may change an indenture without the consent of any holders with respect to specific matters:

•to fix any ambiguity, defect or inconsistency in the indenture;

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•to comply with the provisions described above under “Description of Debt Securities — Consolidation, Merger or Sale;”

•to comply with any requirements of the Commission in connection with the qualification of any indenture under the Trust Indenture Act of 1939;

•to add to, delete from or revise the conditions, limitations, and restrictions on the authorized amount, terms, or purposes of issue, authentication and delivery of debt securities, as set forth in the indenture;

•to provide for the issuance of and establish the form and terms and conditions of the debt securities of any series as provided under “Description of Debt Securities — General” to establish the form of any certifications required to be furnished pursuant to the terms of the indenture or any series of debt securities, or to add to the rights of the holders of any series of debt securities;

•to evidence and provide for the acceptance of appointment hereunder by a successor trustee;

•to provide for uncertificated debt securities in addition to or in place of certificated debt securities and to make all appropriate changes for such purpose;

•to add to our covenants such new covenants, restrictions, conditions or provisions for the protection of the holders, and to make the occurrence, or the occurrence and the continuance, of a default in any such additional covenants, restrictions, conditions or provisions an event of default; or

•to change anything that does not materially adversely affect the interests of any holder of debt securities of any series.

In addition, under the indentures, the rights of holders of a series of debt securities may be changed by us and the debenture trustee with the written consent of the holders of at least a majority in aggregate principal amount of the outstanding debt securities of each series that is affected. However, unless we provide otherwise in the prospectus supplement applicable to a particular series of debt securities, we and the debenture trustee may make the following changes only with the consent of each holder of any outstanding debt securities affected:

•extending the fixed maturity of the series of debt securities;

•reducing the principal amount, reducing the rate of or extending the time of payment of interest, or reducing any premium payable upon the redemption of any debt securities; or

•reducing the percentage of debt securities, the holders of which are required to consent to any amendment, supplement, modification or waiver.

Discharge

Each indenture provides that we can elect to be discharged from our obligations with respect to one or more series of debt securities, except for specified obligations, including obligations to:

•register the transfer or exchange of debt securities of the series;

•replace stolen, lost or mutilated debt securities of the series;

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•maintain paying agencies;

•hold monies for payment in trust;

•recover excess money held by the debenture trustee;

•compensate and indemnify the debenture trustee; and

•appoint any successor trustee. 

In order to exercise our rights to be discharged, we must deposit with the debenture trustee money or government obligations sufficient to pay all the principal of, any premium, if any, and interest on, the debt securities of the series on the dates payments are due.

Form, Exchange and Transfer

We will issue the debt securities of each series only in fully registered form without coupons and, unless we provide otherwise in the applicable prospectus supplement, in denominations of $1,000 and any integral multiple thereof. The indentures provide that we may issue debt securities of a series in temporary or permanent global form and as book-entry securities that will be deposited with, or on behalf of, The Depository Trust Company or another depositary named by us and identified in a prospectus supplement with respect to that series. See “Legal Ownership of Securities” for a further description of the terms relating to any book-entry securities.

At the option of the holder, subject to the terms of the indentures and the limitations applicable to global securities described in the applicable prospectus supplement, the holder of the debt securities of any series can exchange the debt securities for other debt securities of the same series, in any authorized denomination and of like tenor and aggregate principal amount.

Subject to the terms of the indentures and the limitations applicable to global securities set forth in the applicable prospectus supplement, holders of the debt securities may present the debt securities for exchange or for registration of transfer, duly endorsed or with the form of transfer endorsed thereon duly executed if so required by us or the security registrar, at the office of the security registrar or at the office of any transfer agent designated by us for this purpose. Unless otherwise provided in the debt securities that the holder presents for transfer or exchange, we will impose no service charge for any registration of transfer or exchange, but we may require payment of any taxes or other governmental charges.

We will name in the applicable prospectus supplement the security registrar, and any transfer agent in addition to the security registrar, that we initially designate for any debt securities. We may at any time designate additional transfer agents or rescind the designation of any transfer agent or approve a change in the office through which any transfer agent acts, except that we will be required to maintain a transfer agent in each place of payment for the debt securities of each series.

If we elect to redeem the debt securities of any series, we will not be required to:

•issue, register the transfer of, or exchange any debt securities of that series during a period beginning at the opening of business 15 days before the day of mailing of a notice of redemption of any debt securities that may be selected for redemption and ending at the close of business on the day of the mailing; or

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•register the transfer of or exchange any debt securities so selected for redemption, in whole or in part, except the unredeemed portion of any debt securities we are redeeming in part.

Information Concerning the Debenture Trustee

The debenture trustee, other than during the occurrence and continuance of an event of default under an indenture, undertakes to perform only those duties as are specifically set forth in the applicable indenture. Upon an event of default under an indenture, the debenture trustee must use the same degree of care as a prudent person would exercise or use in the conduct of his or her own affairs. Subject to this provision, the debenture trustee is under no obligation to exercise any of the powers given it by the indentures at the request of any holder of debt securities unless it is offered reasonable security and indemnity against the costs, expenses and liabilities that it might incur.

Payment and Paying Agents

Unless we otherwise indicate in the applicable prospectus supplement, we will make payment of the interest on any debt securities on any interest payment date to the person in whose name the debt securities, or one or more predecessor securities, are registered at the close of business on the regular record date for the interest.

We will pay principal of and any premium and interest on the debt securities of a particular series at the office of the paying agents designated by us, except that unless we otherwise indicate in the applicable prospectus supplement, we will make interest payments by check that we will mail to the holder or by wire transfer to certain holders. Unless we otherwise indicate in the applicable prospectus supplement, we will designate the corporate trust office of the debenture trustee in the City of New York as our sole paying agent for payments with respect to debt securities of each series. We will name in the applicable prospectus supplement any other paying agents that we initially designate for the debt securities of a particular series. We will maintain a paying agent in each place of payment for the debt securities of a particular series.

All money we pay to a paying agent or the debenture trustee for the payment of the principal of or any premium or interest on any debt securities that remains unclaimed at the end of two years after such principal, premium or interest has become due and payable will be repaid to us, and the holder of the debt security thereafter may look only to us for payment thereof.

Governing Law

The indentures and the debt securities will be governed by and construed in accordance with the laws of the State of New York, except to the extent that the Trust Indenture Act of 1939 is applicable.

Subordination of Subordinated Debt Securities

The subordinated debt securities will be unsecured and will be subordinate and junior in priority of payment to certain of our other indebtedness to the extent described in a prospectus supplement. The subordinated indenture does not limit the amount of subordinated debt securities that we may issue, nor does it limit us from issuing any other secured or unsecured debt.

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DESCRIPTION OF RIGHTS

General

    We may issue rights to our stockholders to purchase shares of our Common Stock, preferred stock or the other securities described in this prospectus. We may offer rights separately or together with one or more additional rights, debt securities, preferred stock, Common Stock, warrants or any combination of those securities in the form of units, as described in the applicable prospectus supplement. Each series of rights will be issued under a separate rights agreement to be entered into between us and a bank or trust company, as rights agent. The rights agent will act solely as our agent in connection with the certificates relating to the rights of the series of certificates and will not assume any obligation or relationship of agency or trust for or with any holders of rights certificates or beneficial owners of rights. The following description sets forth certain general terms and provisions of the rights to which any prospectus supplement may relate. The particular terms of the rights to which any prospectus supplement may relate and the extent, if any, to which the general provisions may apply to the rights so offered will be described in the applicable prospectus supplement. To the extent that any particular terms of the rights, rights agreement or rights certificates described in a prospectus supplement differ from any of the terms described below, then the terms described below will be deemed to have been superseded by that prospectus supplement. We encourage you to read the applicable rights agreement and rights certificate for additional information before you decide whether to purchase any of our rights.

    We will provide in a prospectus supplement the following terms of the rights being issued:

•the date of determining the stockholders entitled to the rights distribution;

•the aggregate number of shares of Common Stock, preferred stock or other securities purchasable upon exercise of the rights;

•the exercise price;

•the aggregate number of rights issued;

•whether the rights are transferrable and the date, if any, on and after which the rights may be separately transferred;

•the date on which the right to exercise the rights will commence, and the date on which the right to exercise the rights will expire;

•the method by which holders of rights will be entitled to exercise;

•the conditions to the completion of the offering, if any;

•the withdrawal, termination and cancellation rights, if any;

•whether there are any backstop or standby purchaser or purchasers and the terms of their commitment, if any;

•whether stockholders are entitled to oversubscription rights, if any;

•any applicable U.S. federal income tax considerations; and

•any other terms of the rights, including terms, procedures and limitations relating to the distribution, exchange and exercise of the rights, as applicable.

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Each right will entitle the holder of rights to purchase for cash the amount of shares of Common Stock, preferred stock or other securities at the exercise price provided in the applicable prospectus supplement. Rights may be exercised at any time up to the close of business on the expiration date for the rights provided in the applicable prospectus supplement.

    Holders may exercise rights as described in the applicable prospectus supplement. Upon receipt of payment and the rights certificate properly completed and duly executed at the corporate trust office of the rights agent or any other office indicated in the prospectus supplement, we will, as soon as practicable, forward the shares of common stock, preferred stock or other securities, as applicable, purchasable upon exercise of the rights. If less than all of the rights issued in any rights offering are exercised, we may offer any unsubscribed securities directly to persons other than stockholders, to or through agents, underwriters or dealers or through a combination of such methods, including pursuant to standby arrangements, as described in the applicable prospectus supplement.

Rights Agent

    The rights agent for any rights we offer will be set forth in the applicable prospectus supplement.

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DESCRIPTION OF WARRANTS

We may issue warrants for the purchase of Common Stock, preferred stock and/or debt securities in one or more series. We may issue warrants independently or together with Common Stock, preferred stock and/or debt securities, and the warrants may be attached to or separate from these securities. While the terms summarized below will apply generally to any warrants that we may offer, we will describe the particular terms of any series of warrants in more detail in the applicable prospectus supplement. The terms of any warrants offered under a prospectus supplement may differ from the terms described below.

We will file as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the Commission, the form of warrant agreement, including a form of warrant certificate, that describes the terms of the particular series of warrants we are offering before the issuance of the related series of warrants. The following summaries of material provisions of the warrants and the warrant agreements are subject to, and qualified in their entirety by reference to, all the provisions of the warrant agreement and warrant certificate applicable to the particular series of warrants that we may offer under this prospectus. We urge you to read the applicable prospectus supplements related to the particular series of warrants that we may offer under this prospectus, as well as any related free writing prospectuses, and the complete warrant agreements and warrant certificates that contain the terms of the warrants.

General

We will describe in the applicable prospectus supplement the terms of the series of warrants being offered, including:

• the offering price and aggregate number of warrants offered;

• the currency for which the warrants may be purchased;

• if applicable, the designation and terms of the securities with which the warrants are issued and the number of warrants issued with each such security or each principal amount of such security;

• if applicable, the date on and after which the warrants and the related securities will be separately transferable;

• in the case of warrants to purchase debt securities, the principal amount of debt securities purchasable upon exercise of one warrant and the price at, and currency in which, this principal amount of debt securities may be purchased upon such exercise;

• in the case of warrants to purchase Common Stock or preferred stock, the number of shares of Common Stock or preferred stock, as the case may be, purchasable upon the exercise of one warrant and the price at which these shares may be purchased upon such exercise;

• the effect of any merger, consolidation, sale or other disposition of our business on the warrant agreements and the warrants;

• the terms of any rights to redeem or call the warrants;

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• any provisions for changes to or adjustments in the exercise price or number of securities issuable upon exercise of the warrants;

• the dates on which the right to exercise the warrants will commence and expire;

• the manner in which the warrant agreements and warrants may be modified;

• a discussion of any material or special United States federal income tax consequences of holding or exercising the warrants;

• the terms of the securities issuable upon exercise of the warrants; and

• any other specific terms, preferences, rights or limitations of or restrictions on the warrants.

Before exercising their warrants, holders of warrants will not have any of the rights of holders of the securities purchasable upon such exercise, including:

•in the case of warrants to purchase debt securities, the right to receive payments of principal of, or premium, if any, or interest on, the debt securities purchasable upon exercise or to enforce covenants in the applicable indenture; or

•in the case of warrants to purchase Common Stock or preferred stock, the right to receive dividends, if any, or payments upon our liquidation, dissolution or winding up or to exercise voting rights, if any.

Exercise of Warrants

Each warrant will entitle the holder to purchase the securities that we specify in the applicable prospectus supplement at the exercise price that we describe in the applicable prospectus supplement. Holders of the warrants may exercise the warrants at any time up to the specified time on the expiration date that we set forth in the applicable prospectus supplement. After the close of business on the expiration date, unexercised warrants will become void.

Holders of the warrants may exercise the warrants by delivering the warrant certificate representing the warrants to be exercised together with specified information, and paying the required amount to the warrant agent in immediately available funds, as provided in the applicable prospectus supplement. We will set forth on the reverse side of the warrant certificate and in the applicable prospectus supplement the information that the holder of the warrant will be required to deliver to the warrant agent.

Upon receipt of the required payment and the warrant certificate properly completed and duly executed at the corporate trust office of the warrant agent or any other office indicated in the applicable prospectus supplement, we will issue and deliver the securities purchasable upon such exercise. If fewer than all of the warrants represented by the warrant certificate are exercised, then we will issue a new warrant certificate for the remaining amount of warrants. If we so indicate in the applicable prospectus supplement, holders of the warrants may surrender securities as all or part of the exercise price for warrants.

Governing Law

Unless we provide otherwise in the applicable prospectus supplement, the warrants and warrant agreements will be governed by and construed in accordance with the laws of the State of New York.

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Enforceability of Rights by Holders of Warrants

Each warrant agent will act solely as our agent under the applicable warrant agreement and will not assume any obligation or relationship of agency or trust with any holder of any warrant. A single bank or trust company may act as warrant agent for more than one issue of warrants. A warrant agent will have no duty or responsibility in case of any default by us under the applicable warrant agreement or warrant, including any duty or responsibility to initiate any proceedings at law or otherwise, or to make any demand upon us. Any holder of a warrant may, without the consent of the related warrant agent or the holder of any other warrant, enforce by appropriate legal action its right to exercise, and receive the securities purchasable upon exercise of, its warrants.

DESCRIPTION OF UNITS

We may issue, in one more series, units consisting of Common Stock, preferred stock, debt securities and/or warrants for the purchase of Common Stock, preferred stock and/or debt securities in any combination. While the terms we have summarized below will apply generally to any units that we may offer under this prospectus, we will describe the particular terms of any series of units in more detail in the applicable prospectus supplement. The terms of any units offered under a prospectus supplement may differ from the terms described below.

We will file as exhibits to the registration statement of which this prospectus is a part, or will incorporate by reference from reports that we file with the Commission, the form of unit agreement that describes the terms of the series of units we are offering, and any supplemental agreements, before the issuance of the related series of units. The following summaries of material terms and provisions of the units are subject to, and qualified in their entirety by reference to, all the provisions of the unit agreement and any supplemental agreements applicable to a particular series of units. We urge you to read the applicable prospectus supplements related to the particular series of units that we may offer under this prospectus, as well as any related free writing prospectuses and the complete unit agreement and any supplemental agreements that contain the terms of the units.

General

We will issue each unit so that the holder of the unit is also the holder of each security included in the unit. Thus, the holder of a unit will have the rights and obligations of a holder of each included security. The unit agreement under which we issue a unit may provide that the securities included in the unit may not be held or transferred separately, at any time or at any time before a specified date.

We will describe in the applicable prospectus supplement the terms of the series of units being offered, including:

• the designation and terms of the units and of the securities comprising the units, including whether and under what circumstances those securities may be held or transferred separately;

• any provisions of the governing unit agreement that differ from those described below; and

• any provisions for the issuance, payment, settlement, transfer or exchange of the units or of the securities comprising the units.

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The provisions described in this section, as well as those described under “Description of Common Stock,” “Description of Preferred Stock,” “Description of Debt Securities” and “Description of Warrants” will apply to each unit and to any Common stock, preferred stock, debt security or warrant included in each unit, respectively.

Issuance in Series

We may issue units in such amounts and in such numerous distinct series as we determine.

Enforceability of Rights by Holders of Units

Each unit agent will act solely as our agent under the applicable unit agreement and will not assume any obligation or relationship of agency or trust with any holder of any unit. A single bank or trust company may act as unit agent for more than one series of units. A unit agent will have no duty or responsibility in case of any default by us under the applicable unit agreement or unit, including any duty or responsibility to initiate any proceedings at law or otherwise, or to make any demand upon us. Any holder of a unit may, without the consent of the related unit agent or the holder of any other unit, enforce by appropriate legal action its rights as holder under any security included in the unit.

We, and any unit agent and any of their agents, may treat the registered holder of any unit certificate as an absolute owner of the units evidenced by that certificate for any purpose and as the person entitled to exercise the rights attaching to the units so requested, despite any notice to the contrary. See “Legal Ownership of Securities” below.

LEGAL OWNERSHIP OF SECURITIES

We can issue securities in registered form or in the form of one or more global securities. We describe global securities in greater detail below. We refer to those persons who have securities registered in their own names on the books that we or any applicable trustee, depositary or warrant agent maintain for this purpose as the “holders” of those securities. These persons are the legal holders of the securities. We refer to those persons who, indirectly through others, own beneficial interests in securities that are not registered in their own names, as “indirect holders” of those securities. As we discuss below, indirect holders are not legal holders, and investors in securities issued in book-entry form or in street name will be indirect holders.

Book-Entry Holders

We may issue securities in book-entry form only, as we will specify in the applicable prospectus supplement. This means securities may be represented by one or more global securities registered in the name of a financial institution that holds them as depositary on behalf of other financial institutions that participate in the depositary’s book-entry system. These participating institutions, which are referred to as participants, in turn, hold beneficial interests in the securities on behalf of themselves or their customers.

Only the person in whose name a security is registered is recognized as the holder of that security. Securities issued in global form will be registered in the name of the depositary or its participants. Consequently, for securities issued in global form, we will recognize only the depositary as the holder of the securities, and we will make all payments on the securities to the depositary. The depositary passes along the payments it receives to its participants, which in turn pass the payments along to their customers who are the beneficial owners. The depositary and its participants do so under agreements they have made with one another or with their customers; they are not obligated to do so under the terms of the securities.

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As a result, investors in a book-entry security will not own securities directly. Instead, they will own beneficial interests in a global security, through a bank, broker or other financial institution that participates in the depositary’s book-entry system or holds an interest through a participant. As long as the securities are issued in global form, investors will be indirect holders, and not holders, of the securities.

Street Name Holders

We may terminate a global security or issue securities in non-global form. In these cases, investors may choose to hold their securities in their own names or in “street name.” Securities held by an investor in street name would be registered in the name of a bank, broker or other financial institution that the investor chooses, and the investor would hold only a beneficial interest in those securities through an account he or she maintains at that institution.

For securities held in street name, we will recognize only the intermediary banks, brokers and other financial institutions in whose names the securities are registered as the holders of those securities, and we will make all payments on those securities to them. These institutions pass along the payments they receive to their customers who are the beneficial owners, but only because they agree to do so in their customer agreements or because they are legally required to do so. Investors who hold securities in street name will be indirect holders, not holders, of those securities.

Legal Holders

Our obligations, as well as the obligations of any applicable trustee and of any third parties employed by us or a trustee, run only to the legal holders of the securities. We do not have obligations to investors who hold beneficial interests in global securities, in street name or by any other indirect means. This will be the case whether an investor chooses to be an indirect holder of a security or has no choice because we are issuing the securities only in global form.

For example, once we make a payment or give a notice to the holder, we have no further responsibility for the payment or notice even if that holder is required, under agreements with depositary participants or customers or by law, to pass it along to the indirect holders but does not do so. Similarly, we may want to obtain the approval of the holders to amend an indenture, to relieve us of the consequences of a default or of our obligation to comply with a particular provision of the indenture or for other purposes. In such an event, we would seek approval only from the holders, and not the indirect holders, of the securities. Whether and how the holders contact the indirect holders is up to the holders.

Special Considerations For Indirect Holders

If you hold securities through a bank, broker or other financial institution, either in book-entry form or in street name, you should check with your own institution to find out:

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• how it handles securities payments and notices;

• whether it imposes fees or charges;

• how it would handle a request for the holders’ consent, if ever required;

• whether and how you can instruct it to send you securities registered in your own name so you can be a holder, if that is permitted in the future;

• how it would exercise rights under the securities if there were a default or other event triggering the need for holders to act to protect their interests; and

• if the securities are in book-entry form, how the depositary’s rules and procedures will affect these matters.

Global Securities

A global security is a security that represents one or any other number of individual securities held by a depositary. Generally, all securities represented by the same global securities will have the same terms.

Each security issued in book-entry form will be represented by a global security that we deposit with and register in the name of a financial institution or its nominee that we select. The financial institution that we select for this purpose is called the depositary. Unless we specify otherwise in the applicable prospectus supplement, The Depository Trust Company, New York, New York, known as DTC, will be the depositary for all securities issued in book-entry form.

A global security may not be transferred to or registered in the name of anyone other than the depositary, its nominee or a successor depositary, unless special termination situations arise. We describe those situations below under “Special Situations When a Global Security Will Be Terminated.” As a result of these arrangements, the depositary, or its nominee, will be the sole registered owner and holder of all securities represented by a global security, and investors will be permitted to own only beneficial interests in a global security. Beneficial interests must be held by means of an account with a broker, bank or other financial institution that in turn has an account with the depositary or with another institution that does. Thus, an investor whose security is represented by a global security will not be a holder of the security, but only an indirect holder of a beneficial interest in the global security.

If the prospectus supplement for a particular security indicates that the security will be issued in global form only, then the security will be represented by a global security at all times unless and until the global security is terminated. If termination occurs, we may issue the securities through another book-entry clearing system or decide that the securities may no longer be held through any book-entry clearing system.

Special Considerations For Global Securities

The rights of an indirect holder relating to a global security will be governed by the account rules of the investor’s financial institution and of the depositary, as well as general laws relating to securities transfers. We do not recognize an indirect holder as a holder of securities and instead deal only with the depositary that holds the global security.

If securities are issued only in the form of a global security, an investor should be aware of the following:

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• an investor cannot cause the securities to be registered in his or her name, and cannot obtain non-global certificates for his or her interest in the securities, except in the special situations we describe below;

• an investor will be an indirect holder and must look to his or her own bank or broker for payments on the securities and protection of his or her legal rights relating to the securities, as we describe above;

• an investor may not be able to sell interests in the securities to some insurance companies and to other institutions that are required by law to own their securities in non-book-entry form;

• an investor may not be able to pledge his or her interest in a global security in circumstances where certificates representing the securities must be delivered to the lender or other beneficiary of the pledge in order for the pledge to be effective;

• the depositary’s policies, which may change from time to time, will govern payments, transfers, exchanges and other matters relating to an investor’s interest in a global security;

• we and any applicable trustee have no responsibility for any aspect of the depositary’s actions or for its records of ownership interests in a global security, nor do we or any applicable trustee supervise the depositary in any way;

• the depositary may, and we understand that DTC will, require that those who purchase and sell interests in a global security within its book-entry system use immediately available funds, and your broker or bank may require you to do so as well; and

• financial institutions that participate in the depositary’s book-entry system, and through which an investor holds its interest in a global security, may also have their own policies affecting payments, notices and other matters relating to the securities.

There may be more than one financial intermediary in the chain of ownership for an investor. We do not monitor and are not responsible for the actions of any of those intermediaries.

Special Situations When a Global Security Will Be Terminated

In a few special situations described below, the global security will terminate and interests in it will be exchanged for physical certificates representing those interests. After that exchange, the choice of whether to hold securities directly or in street name will be up to the investor. Investors must consult their own banks or brokers to find out how to have their interests in securities transferred to their own name, so that they will be direct holders. We have described the rights of holders and street name investors above.

Unless we provide otherwise in the applicable prospectus supplement, the global security will terminate when the following special situations occur:

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• if the depositary notifies us that it is unwilling, unable or no longer qualified to continue as depositary for that global security and we do not appoint another institution to act as depositary within 90 days;

• if we notify any applicable trustee that we wish to terminate that global security; or

• if an event of default has occurred with regard to securities represented by that global security and has not been cured or waived.

The prospectus supplement may also list additional situations for terminating a global security that would apply only to the particular series of securities covered by the applicable prospectus supplement. When a global security terminates, the depositary, and not we or any applicable trustee, is responsible for deciding the names of the institutions that will be the initial direct holders.

PLAN OF DISTRIBUTION

We may sell the securities covered by this prospectus from time to time. Registration of the securities covered by this prospectus does not mean, however, that those securities will necessarily be offered or sold. We may sell the securities separately or together: through one or more underwriters in a public offering and sale by them; directly to investors (in those jurisdictions where we are authorized to do so); through agents; or through a combination of any of these methods of sale. We may sell the securities from time to time: in one or more transactions at a fixed price or prices that may be changed from time to time; at market prices prevailing at the time of sale; at prices related to prevailing market prices; or at negotiated prices. We will describe the method of distribution of the securities and the terms of the offering in the applicable prospectus supplement.

If underwriters are used for the sale of any securities, the securities will be acquired by the underwriters for their own account and may be resold from time to time in one or more transactions described above. The securities may be either offered to the public through underwriting syndicates represented by managing underwriters, or directly by underwriters. Generally, the underwriters’ obligations to purchase the securities will be subject to conditions precedent and the underwriters will be obligated to purchase all of the securities if they purchase any of the securities. We may grant underwriters who participate in the distribution of securities an option to purchase additional securities in connection with the distribution. Any underwriter or agent involved in the offer and sale of the securities will be named in the related prospectus supplement.

Underwriters may offer and sell the securities at a fixed price or prices that may be changed, at market prices prevailing at the time of sale, at prices related to prevailing market prices, or at negotiated prices. We also may, from time to time, authorize dealers, acting as our agents, to offer and sell the securities upon the terms and conditions described in the related prospectus supplement. Underwriters may receive compensation from us in the form of underwriting discounts or commissions and may also receive commissions from purchasers of the securities for whom they may act as agent. Underwriters may sell the securities to or through dealers, and the dealers may receive compensation in the form of discounts, concessions or commissions from the underwriters or commissions, which may be changed from time to time, from the purchasers for whom they may act as agents.

Any underwriting compensation paid by us to underwriters or agents in connection with the offering of the securities, and any discounts, concessions or commissions allowed by underwriters to participating dealers, will be stated in the related prospectus supplement. Dealers and agents participating in the distribution of the securities may be deemed to be underwriters, and any discounts and commissions received by them and any profit realized by them on resale of the securities may be deemed to be underwriting discounts and commissions under the applicable securities laws.

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Shares of our Common Stock are quoted on the NYSE AMERICAN. In connection with any offering of securities, the underwriters may purchase and sell securities in the open market and engage in over-allotment transactions, short-covering transactions, penalty bids and stabilizing transactions in accordance with Regulation M under the Exchange Act. Over-allotment involves sales of securities in excess of the offering size of securities to be purchased by the underwriters in an offering, which creates a short position for the underwriters. Short-covering transactions involve purchases of the securities in the open market after the distribution has been completed in order to cover short positions. Penalty bids permit the underwriters to reclaim a selling concession from a dealer when the securities originally sold by the dealer are purchased in a covering transaction to cover short positions. Stabilizing transactions consist of certain bids or purchases of securities made for the purpose of preventing or retarding a decline in the market price of the securities while the offering is in progress. Any of these activities may have the effect of preventing or retarding a decline in the market price of the securities being offered. They may also cause the price of the securities being offered to be higher than the price that otherwise would exist in the open market in the absence of these transactions. The underwriters may conduct these transactions in the over-the-counter market or otherwise. If the underwriters commence any of these transactions, they may discontinue them at any time. We make no representation as to the direction or magnitude of any affect that such transactions may have on the price of the securities.

Underwriters, dealers and agents may be entitled, under agreements entered into with us to indemnification by us against certain civil liabilities, including liabilities under the Securities Act, or to contribution with respect to payments made by such underwriters, dealers or agents related to such civil liabilities.

Certain of the underwriters, dealers or agents and their associates may engage in transactions with, and perform other services for us in the ordinary course of business for which they may receive compensation.

VALIDITY OF THE SECURITIES

The validity of the securities offered and to be offered hereby and certain other legal matters will be passed upon for us by McDonald Carano, LLP, Reno, Nevada. Counsel for any underwriter or agent will be named in the applicable prospectus supplement.

EXPERTS

The consolidated financial statements, and the related financial statement schedule, incorporated in this Prospectus by reference from the 2018 Form 10-K, and the effectiveness of the Company's internal control over financial reporting have been audited by Deloitte & Touche LLP, an independent registered public accounting firm, as stated in their reports, which are incorporated herein by reference. Such consolidated financial statements and financial statement schedule have been so incorporated in reliance upon the reports of such firm given upon their authority as experts in accounting and auditing.

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Common Stock

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PROSPECTUS

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September 28, 2021

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