10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-Q

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

For the quarterly period ended March 31, 2019

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

For the Transition Period from            to            

Commission File Number: 001-35405

MELINTA THERAPEUTICS, INC.

(Exact name of registrant specified in its charter)

Delaware	2834	45-4440364
(State or Other Jurisdiction of Incorporation or Organization)	(Primary Standard Industrial Classification Code Number)	(I.R.S. Employer Identification No.)

44 Whippany Road, Suite 280

Morristown, NJ 07960

(Address of Principal Executive Offices)

(908) 617-1309

(Telephone Number, Including Area Code)

Securities Registered Pursuant to Section 12(b) of the Exchange Act:

Title of Each Class	Trading Symbol	Name of Exchange on which Registered
Common Stock, $0.001 Par Value	MLNT	Nasdaq Global Market

Securities Registered Pursuant to Section 12(g) of the Act: None

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

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

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

Large accelerated filer	¨		Accelerated filer	x
Non-accelerated filer	¨	(Do not check if a smaller reporting company)	Smaller reporting company	x
Emerging growth company	¨

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

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

As of April 26, 2019, there were 11,779,897 shares of the registrant’s common stock, $0.001 par value, outstanding.

MELINTA THERAPEUTICS, INC.

TABLE OF CONTENTS

		Page
PART I—FINANCIAL INFORMATION		1
Item 1.	Financial Statements (Unaudited)	1
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operation	21
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	25
Item 4.	Controls and Procedures	25
PART II—OTHER INFORMATION		27
Item 1A.	Risk Factors	27
Item 6.	Exhibits	28

i

PART I—FINANCIAL INFORMATION

Item 1. Financial Statements

MELINTA THERAPEUTICS, INC.

Condensed Consolidated Balance Sheets

(In thousands, except share and per share data)

(Unaudited)

	March 31, 2019			December 31, 2018
Assets
Current assets
Cash and equivalents	$	116,901		$	81,808
Receivables (See Note 3)	14,892			22,485
Inventory	44,451			41,341
Prepaid expenses and other current assets	5,512			3,848
Total current assets	181,756			149,482
Property and equipment, net	1,465			1,586
Intangible assets, net	225,073			229,196
Other assets (See Note 3)	62,155			61,326
Total assets	$	470,449		$	441,590
Liabilities
Current liabilities
Accounts payable	$	8,321		$	16,765
Accrued expenses	22,625			33,924
Deferred purchase price and other liabilities (See Notes 3 and 4)	82,316			78,394
Accrued interest on notes payable	4,440			4,485
Warrant liability	23			38
Conversion liability (See Note 4)	12,236			—
Total current liabilities	129,961			133,606
Long-term liabilities
Notes payable, net of debt discount and costs (See Note 4)	91,397			110,476
Convertible notes payable to related parties, net of debt discount and costs (See note 4)	62,350			—
Other long-term liabilities	10,225			7,444
Total long-term liabilities	163,972			117,920
Total liabilities	293,933			251,526
Commitments and contingencies
Shareholders' Equity
Preferred stock; $.001 par value; 5,000,000 shares authorized; no shares issued or outstanding at March 31, 2019, and December 31, 2018, respectively	—			—
Common stock; $.001 par value; 80,000,000 shares authorized; 11,779,897 and 11,204,050 issued and outstanding at March 31, 2019, and December 31, 2018, respectively	12			11
Additional paid-in capital	924,821			909,896
Accumulated deficit	(748,317		)	(719,843		)
Total shareholders’ equity	176,516			190,064
Total liabilities and shareholders’ equity	$	470,449		$	441,590

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

1

MELINTA THERAPEUTICS, INC.

Condensed Consolidated Statements of Operations

(In thousands, except share and per share data)

(Unaudited)

	Three Months Ended March 31,
	2019			2018
Revenue
Product sales, net	$	11,775		$	11,846
Contract research	1,409			2,995
License	900			—
Total revenue	14,084			14,841
Operating expenses:
Cost of goods sold	7,365			7,686
Research and development	5,364			16,129
Selling, general and administrative	25,941			34,624
Total operating expenses	38,670			58,439
Loss from operations	(24,586		)	(43,598		)
Other income (expense):
Interest income	187			210
Interest expense	(7,103		)	(10,196		)
Interest expense (related party, see Note 4)	(564		)	—
Change in fair value of warrant & conversion liabilities	6,015			24,085
Loss on extinguishment of debt	(346		)	(2,595		)
Other income (expense)	(73		)	4
Grant income (expense)	(62		)	2,658
Other income (expense), net	(1,946		)	14,166
Net loss	$	(26,532	)	$	(29,432	)
Basic and diluted net loss per share	$	(2.34	)	$	(4.76	)
Basic and diluted weighted average shares outstanding	11,330,019			6,183,540

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

2

MELINTA THERAPEUTICS, INC.

Condensed Consolidated Statements of Shareholders’ Equity

(In thousands, except share data)

	Three Months Ended March 31, 2019
	Common Stock			Additional Paid-In Capital		Accumulated Deficit			Total Shareholders' Equity
	Shares	Amount
Balance as of January 1, 2019	11,204,049	$	11	$	909,896	$	(719,843	)	$	190,064
Share-based compensation	—	—		909		—			909
Issuance of common shares	1,705	—		8		—			8
Vesting of restricted stock grants	24,143	—		—		—			—
Issuance of common shares upon conversion of convertible notes	550,000	1		2,766		—			2,767
Discount on issuance of convertible notes (deemed shareholder contribution) (Note 4)	—	—		11,242		—			11,242
Cumulative adjustment upon adoption of lease accounting standard (Note 6)	—	—		—		(1,942		)	(1,942		)
Net loss	—	—		—		(26,532		)	(26,532		)
Balance as of March 31, 2019	11,779,897	$	12	$	924,821	$	(748,317	)	$	176,516

	Three Months Ended March 31, 2018
	Common Stock			Additional Paid-In Capital		Accumulated Deficit			Total Shareholders' Equity
	Shares	Amount
Balance as of January 1, 2018	4,399,788	$	4	$	644,991	$	(572,659	)	$	72,336
Adoption of revenue accounting standard	—	—		—		10,008			10,008
Share-based compensation	—	—		955		—			955
Issuance of common shares	40	—		3		—			3
Vesting of restricted stock grants	5,521	—		—		—			—
Issuance of common shares in connection with IDB Transaction	1,865,301	2		145,961		—			145,963
Net loss	—	—		—		(29,432		)	(29,432		)
Balance as of March 31, 2018	6,270,650	$	6	$	791,910	$	(592,083	)	$	199,833

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

3

MELINTA THERAPEUTICS, INC.

Condensed Consolidated Statements of Cash Flows

(In thousands)

(Unaudited)

	Three Months Ended March 31,
	2019			2018
Operating activities
Net loss	$	(26,532	)	$	(29,432	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	4,474			4,805
Non-cash interest expense	3,230			5,954
Share-based compensation	892			955
Change in fair value of warrant & conversion liabilities	(6,015		)	(24,085		)
Loss on extinguishment of debt	346			2,595
Gain on extinguishment of lease liabilities	(792		)	—
Changes in operating assets and liabilities
Receivables	7,593			(5,868		)
Inventory	(3,093		)	(2,002		)
Prepaid expenses and other current assets	(1,551		)	(1,293		)
Accounts payable	(8,372		)	3,983
Accrued expenses	(9,711		)	(4,817		)
Accrued interest on notes payable	(46		)	(284		)
Other non-current assets and liabilities	2,256			(1,930		)
Net cash used in operating activities	(37,321		)	(51,419		)
Investing activities
IDB acquisition	—			(166,383		)
Purchases of intangible assets	(1,209		)	—
Purchases of property and equipment	(12		)	(504		)
Net cash used in investing activities	(1,221		)	(166,887		)
Financing activities
Proceeds from the issuance of notes payable	—			111,421
Proceeds from the issuance of convertible notes payable	75,000			—
Costs associated with the issuance of notes payable	(1,301		)	(6,455		)
Proceeds from the issuance of warrants	—			33,264
Proceeds from the issuance of royalty agreement	—			1,472
Purchase of notes payable disbursement option	—			(7,609		)
Proceeds from issuance of common stock, net, to lender	—			51,452
Proceeds from issuance of common stock, net	8			40,000
Debt extinguishment	—			(2,150		)
IDB acquisition deferred payments	(72		)	—
Proceeds from the exercise of stock options, net of cancellations	—			3
Principal payments on notes payable	—			(40,000		)
Net cash provided by financing activities	73,635			181,398
Net change in cash and equivalents	35,093			(36,908		)
Cash, cash equivalents and restricted cash at beginning of the period	82,008			128,587
Cash, cash equivalents and restricted cash at end of the period	$	117,101		$	91,679
Supplemental cash flow information:
Cash paid for interest	$	4,486		$	4,480
Supplemental disclosure of non-cash financing and investing activities:
Accrued purchases of fixed assets	$	12		$	327

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

4

MELINTA THERAPEUTICS, INC.

March 31, 2019

Notes to Condensed Consolidated Financial Statements

(In thousands, except share and per share data or as otherwise noted)

(Unaudited)

NOTE 1 – FINANCIAL STATEMENTS

The accompanying condensed consolidated financial statements have been prepared assuming Melinta Therapeutics, Inc. (the “Company,” “we,” “us,” “our,” or “Melinta”) will continue as a going concern. We are not currently generating revenue from operations that is sufficient to cover our operating expenses and do not anticipate generating revenue sufficient to offset operating costs in the short-term. We have incurred losses from operations since our inception and had an accumulated deficit of $748,317 as of March 31, 2019, and we expect to incur substantial expenses and further losses in the short term for the development and commercialization of our product candidates and approved products. In addition, we have substantial commitments in connection with our acquisition of the infectious disease business of The Medicines Company ("Medicines") that we completed in January 2018, including payments related to deferred purchase price consideration, assumed contingent liabilities and the purchase of inventory. And, there are certain financial-related covenants under our Deerfield Facility, as amended in January 2019, including requirements that we (i) file an Annual Report on Form 10-K for the year ending December 31, 2019, with an audit opinion without a going concern qualification, (ii) maintain a minimum cash balance of $40,000 through March 2020, and thereafter, a balance of $25,000, and (iii) achieve net revenue from product sales of at least $63,750 for the year ending December 31, 2019. (See Note 4 to the consolidated financial statements for further details on the Deerfield Facility.)

Our future cash flows are dependent on key variables such as our ability to access additional capital under our Vatera and Deerfield credit facilities, our ability to secure a working capital revolver, which is allowed under the Deerfield Facility and required under the Vatera facility, and most importantly, the level of sales achievement of our four marketed products. Our current operating plans include assumptions about our projected levels of product sales growth in the next 12 months in relation to our planned operating expenses. Revenue projections are inherently uncertain but have a higher degree of uncertainty in an early-stage commercial launch, which we have in Baxdela and Vabomere, where there is not yet a robust sales history. While we have a plan to achieve the current expected sales levels of our products, we are unable to conclude based on applying the requirements of FASB Accounting Standards Codification ("ASC") 205-40, Presentation of Financial Statements - Going Concern (“ASC 205”) that such revenue is “probable” (as defined under this accounting standard). In addition, given our forecasted product sales are not deemed probable, our ability to draw the additional $50,000 of capacity under the Deerfield Facility, which is conditional based on meeting certain sales-based milestones before the end of 2019, is also not considered to be probable. And further, given the softness of our product sales to date, we believe that there is risk in meeting the minimum sales covenant for 2019 under the terms of the Deerfield Credit Facility. As such, we are not able to conclude under ASC 205 that the actions discussed below will be effectively implemented and, therefore, our current operating plans, existing cash and cash collections from existing revenue arrangements and product sales may not be sufficient to fund our operations for the next 12 months. As such, we believe there is substantial doubt about our ability to continue as a going concern. The financial statements do not include any adjustments relating to the recoverability and classification of liabilities that might be necessary should we be unable to continue as a going concern.

In the fourth quarter of 2018, the Company took actions to reduce its operating spend, including a reduction to the workforce of approximately 20% and a decision to begin to wind down its research and discovery function. To provide additional operating capital, in December 2018, the Company entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera Healthcare Partners LLC and Vatera Investment Partners LLC (together, “Vatera”) pursuant to which Vatera committed to provide $135,000 over a period of five months, subject to the satisfaction of certain conditions (see Note 4). We drew $75,000 under this facility in February 2019, and while the remaining $60,000 is available through early July 2019, subject to certain closing conditions, it is not certain that all of these conditions will be met. Among these conditions, before each draw, management must certify to Vatera that it does not foresee breaching any covenants under the Deerfield Credit Facility, and the Company must establish a working capital revolver of at least $10,000 in order to draw the final $35,000 tranche under the Loan Agreement in July 2019.

As of March 31, 2019, the Company had $116,901 in cash and cash equivalents. In addition to pursuing the additional $60,000 available under the Vatera Facility and a working capital revolver for up to $20,000, we are also exploring options to modify the terms of certain liabilities to increase our liquidity over the next 12 to 18 months. If our cash collections from revenue arrangements, including product sales, and other financing sources are not sufficient, we plan to control spending and would take further actions to adjust the spending level for operations if required. However, there is no guarantee that we will be successful in executing any or all of these initiatives.

NOTE 2 – SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

5

Principles of Consolidation and Basis of Presentation—The accompanying unaudited condensed consolidated financial statements include the accounts and results of operations of Melinta and its wholly-owned subsidiaries. The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).The information reflects all adjustments (consisting of only normal, recurring adjustments) necessary for a fair presentation of the information.All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates—The preparation of these unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Concentration of Credit Risk—Concentration of credit risk exists with respect to cash and cash equivalents and receivables. We maintain our cash andcash equivalents with federally insured financial institutions, and at times, the amounts may exceed the federally insured deposit limits. To date, we have not experienced any losses on our deposits of cash and cash equivalents. We believe that we are notexposed to significant credit risk due to the financial position of the depository institutions in which deposits are held.

A significant portion of our trade receivables is due from three large wholesaler customers for our products, which constitute 36%, 29% and 26%, respectively, of our trade receivable balance at March 31, 2019.

Fair Value of Financial Instruments—The carrying amounts of our financial instruments, which include cash and cash equivalents, trade and other receivables, accounts payable, accrued expenses, and notes payable approximated their fair values at March 31, 2019, and December 31, 2018.

Intangible Assets—Intangible assets consist of capitalized milestone payments for the licenses we use to make our products and the fair value of identifiable intangible assets acquired. Given the uncertainty of forecasts of future revenue for our products, we amortize the cost of intangible assets on a straight-line basis over the estimated economic life of each asset, generally the exclusivity period of each associated product. Amortization of intangible assets was $4,124 and $4,675 for the three months ended March 31, 2019 and 2018, respectively. Based on the intangible asset balances as of March 31, 2019, amortization expense is expected to be approximately $12,371 for the remaining nine months of 2019 and $16,495 in each of the years 2020 through 2023.

Revenue Recognition—We recognize revenue from sales of our commercial products and under our licensing arrangements in accordance with Accounting Standards Codification 606, Revenue from Contracts with Customers ("ASC 606").

Product Sales

We recognize revenue from product sales upon the transfer of control, which depends on the delivery terms set forth in customer contracts and is generally upon delivery. Payment terms between Melinta and our customers vary by customer, but are generally between 30 and 60 days from the invoice date.

Management exercises judgment in estimating variable consideration. Provisions for prompt-pay discounts, chargebacks, rebates, wholesalers fees-for-services, group purchasing organization administration fees, voluntary patient assist programs, returns and other adjustments are recorded in the period the related sales are recognized. We provide discounts to certain hospitals and private entities, and we provide rebates to government agencies, group purchasing organizations and other private entities.

Chargebacks, rebates administration fees and discounts offered under our patient assistance programs are generally based upon the contractual discounts or the volume of purchases for our products. In the case of discounted pricing, we typically provide a credit to our wholesale customers (i.e., chargeback), representing the difference between the customer’s acquisition list price and the discounted price offered to certain hospitals. For the other certain discounts, we pay rebates based on the program that is ultimately utilized by the hospital or, in the retail setting, the patient under our patient assistance program. Factors used in these calculations include the identification of which products have been sold subject to a discount, rebate or administration fee, which customer, government agency, or group purchasing organization price terms apply, and the estimated lag time between the sale of the product and when the discount, rebate or administration fee is reported to us. Using historical trends, adjusted for current changes, we estimate the amount of these discounts, rebates and administration fees that will be paid, and record them as a reduction to gross sales when we recognize revenue for the sale of our products. Settlement of discounts, rebates and administration fees generally occurs from between one and six months after the initial sale to the wholesaler. We regularly analyze historical trends and make adjustments to reserves for changes in trends and terms of rebate programs. Historically, adjustments to prior periods' rebate accruals have not been material to net product sales.

6

For product returns, generally, our customers have the right to return any unopened product during the 18-month period beginning six months prior to the labeled expiration date and ending 12 months after the labeled expiration date. Where historical rates of return exist, we use history as a basis to establish a returns reserve for product shipped to wholesalers. For our newly launched products, for which we currently do not have history of product returns, we estimate returns based on third-party industry data for comparable products in the market. As we distribute our products and establish historical sales over a longer period of time (i.e., two years), we will be able to place more reliance on historical purchasing and return patterns of our customers when evaluating our reserves for product return. At the end of each reporting period for any of our products, we may decide to constrain revenue for product returns based on information from various sources, including channel inventory levels and dating and sell-through data, the expiration dates of product currently being shipped, price changes of competitive products and introductions of generic products.

Adjustments to gross sales related to prompt-pay discounts and fees-for-services require less judgment as they are based on contractual percentages and the amounts invoiced to the wholesalers.

At the end of each reporting period, we adjust our product sales allowances when we believe actual experience may differ from current estimates. The following table provides a summary of activity with respect to our sales allowances and accruals during the first three months of 2019: 

	Cash Discounts			Product Returns			Chargebacks			Fees-for- Service			MelintAssist			Government Rebates			Commercial Rebates			Admin Fees
Balance as of January 1, 2019	$	245		$	2,970		$	762		$	818		$	412		$	693		$	599		$	138
Allowances for sales	292			398			1,127			793			264			215			306			142
Payments & credits issued	(392		)	(206		)	(1,299		)	(686		)	(278		)	(73		)	(330		)	(127		)
Balance as of March 31, 2019	$	145		$	3,162		$	590		$	925		$	398		$	835		$	575		$	153

The allowances for cash discounts and chargebacks are recorded as contra-assets in trade receivables; the other balances are recorded in other accrued expenses.

Licensing Arrangements

We enter into license and collaboration agreements for the research and development and/or commercialization of therapeutic products. The terms of these agreements may include nonrefundable licensing fees, funding for research and development and manufacturing, milestone payments and royalties on any product sales derived from the collaborations in exchange for the delivery of licenses and rights to sell our products within specified territories outside the United States.

In the determination of whether our license and collaboration agreements are accounted for under ASC 606 or ASC 808, Contract Accounting, we first assess whether or not the partner in the arrangement is a customer. If the partner in the arrangement is deemed a customer as it relates to some or all of our performance obligations, then the consideration associated with those performance obligations is accounted for as revenue under ASC 606.

Our license agreements may include contingent or variable consideration based upon the achievement of regulatory- and sales-based milestones and future royalties based on a percentage of the partner’s net product sales. Performance obligations to deliver distinct licenses are recognized at a point in time. Milestone payments from licensees that are contingent and/or variable upon future regulatory events and product sales are not considered probable of being achieved until the milestones are earned and, therefore, the contingent revenue is subject to significant risk of reversal. As such, we constrain this variable consideration and do not include it in the transaction price (or recognize the revenue related to these milestones) until such time that the contingencies are resolved and generally recognized at a point in time. In addition, under the sales- or usage- based royalty exception in ASC 606, we do not estimate, at the onset of the arrangement, the variable consideration from future royalties or sales-based milestones. Instead, we wait to recognize royalty revenue until the future sales occur.

As of March 31, 2019, we do not have any contract assets or liabilities and our contracts do not have any significant financing components. And, we have not capitalized contract origination costs.  

Comprehensive Loss—Comprehensive loss is equal to net loss as presented in the accompanying statements of operations.

Advertising Expense—We record advertising expenses when they are incurred. We recognized $176 and $410, respectively, of advertising expense in the three months ended March 31, 2019 and 2018, respectively. 

7

Leases—On January 1, 2019, we adopted Topic 842, Leases ("Topic 842") which requires lessees to recognize assets and liabilities for most leases at the lease inception. All of the Company's leases are operating leases, which are included in other long-term assets as operating right of use ("ROU") assets and other liabilities as operating lease liabilities in our consolidated balance sheets.

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As our leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. We will use the implicit rate when readily determinable. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Our has lease agreements with lease and non-lease components, which are accounted for separately.

Segment and Geographic Information—Operating segments are defined as components of an enterprise engaging in business activities for which discrete financial information is available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and in assessing performance. We operate and manage our business as one operating segment. Although substantially all of our license and contract research revenue is generated from agreements with companies that are domiciled outside of the U.S., we do not operate outside of the U.S., nor do we have any significant assets in any foreign country. See this Note 2 for further discussion of the license and contract research revenue.

Recently Issued and Adopted Accounting Pronouncements:

We adopted Topic 842 codified as ASC 842 on January 1, 2019 ("Effective Date"). ASC 842 requires lessees to recognize assets and liabilities on the balance sheet for most leases but recognize expense on the income statement in a manner similar to previous accounting. The standard requires a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements or an optional transition method, whereby an entity can elect to apply the standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative prior periods. We adopted this guidance on the Effective Date, electing the optional transition method. Consequently, we did not recast the comparative periods presented in this Quarterly Report on Form 10-Q. In addition, as permitted under ASC 842, we elected several practical expedients and therefore did not reassess at the Effective Date (1) whether any existing contract is or contains a lease, (2) the classification of existing leases, (3) whether previously capitalized costs continue to qualify as initial indirect costs. We also elected not to record on the balance sheet a lease whose term is 12 months or less and does not include a purchase option that the lessee is reasonably certain to exercise. We did not elect the practical expedient to not separate lease and non-lease components.

Upon adoption of ASC 842 on the Effective Date, we recorded ROU assets of $4,768, net of historical deferred rent liabilities and aggregate charges of $1,942 to retained earnings in connection with ROU asset impairments on the Effective Date. In addition, we recorded lease liabilities of $7,411 related to facility and vehicle leases. See Note 6 for further details. The transition to ASC 842, did not result in a cumulative-effect adjustment to the opening balance of retained earnings.

Recently Issued Accounting Pronouncements Not Yet Adopted

In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies or removes certain disclosure requirements in Topic 820, Fair Value Measurements. The update is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. We are currently evaluating the impact of the adoption of this ASU on our financial statements.

In August 2018, the FASB issued ASU 2018-15, Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which provides guidance on implementation costs incurred in a cloud computing arrangement that is a service contract. The ASU amends Topic 350, Intangibles—Goodwill and Other, to include these implementation costs in its scope and clarifies that a customer should apply ASC 350-40 to determine which implementation costs should be capitalized. The update is effective for public entities for fiscal years beginning after December 15, 2019. we are currently evaluating the impact the adoption of this ASU will have on our financial statements.

In November 2018, the FASB issued ASU 2018-18, Clarifying the Interaction between Topic 808 and Topic 606, which amends ASC 808 to clarify when transactions between participants in a collaborative arrangement under ASC 808 are within the scope of ASC 606, Revenue from Contracts with Customers. The ASU provides clarity in both ASC 606 and 808 regarding when transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606. The update is effective for public entities for fiscal years beginning after December 15, 2019. we are currently evaluating the impact the adoption of this ASU will have on our financial statements.

8

NOTE 3 – BALANCE SHEET COMPONENTS

Cash, Cash Equivalents and Restricted Cash—Cash, cash equivalents and restricted cash, as presented on the Condensed Consolidated Statements of Cash Flows, consisted of the following: 

	March 31, 2019		December 31, 2018
Cash and cash equivalents	$	116,901	$	81,808
Restricted cash (included in Other Assets)	200		200
Total cash, cash equivalents and restricted cash shown in the Condensed    Consolidated Statements of Cash Flows	$	117,101	$	82,008

Accounts Receivable—Accounts receivable consisted of the following:

	March 31, 2019		December 31, 2018
Trade receivables	$	7,460	$	11,509
Contracted services	6,958		10,293
Other receivables	474		683
Total receivables	$	14,892	$	22,485

Inventory—Inventory consisted of the following: 

	March 31, 2019			December 31, 2018
Raw materials	$	28,841		$	24,507
Work in process	9,977			11,700
Finished goods	11,685			12,204
Gross value of inventory	50,503			48,411
Less: valuation reserves	(6,052		)	(7,070		)
Total inventory	$	44,451		$	41,341

Other Assets—Other assets consisted of the following: 

	March 31, 2019		December 31, 2018
Deerfield disbursement option (see Note 4)	$	7,609	$	7,608
Long-term inventory deposits	48,044		51,127
Other assets	1,400		2,391
Right-of-use assets	4,902		—
Restricted cash	200		200
Total other assets	$	62,155	$	61,326

Long-term inventory deposits consist of advances made to contract manufacturers for production of drug products, principally API for Vabomere. These Vabomere advances were related to contractual commitments assumed under long-term contract manufacturing agreements in connection with a previously acquired entity. As deliveries are made, we transfer appropriate amounts from inventory deposits to inventory.

Accrued Expenses—Accrued expenses consisted of the following: 

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	March 31, 2019		December 31, 2018
Accrued contracted services	$	1,318	$	2,909
Payroll related expenses	10,026		15,585
Professional fees	173		3,598
Accrued royalty payments	2,885		2,052
Accrued sales allowances	6,047		5,630
Accrued other	2,176		4,150
Total accrued expenses	$	22,625	$	33,924

Accrued contracted services are primarily comprised of amounts owed to third-party clinical research organizations for research and development work and contract manufacturers for research and commercial drug product manufacturing performed on behalf of Melinta, and amounts owed to third-party marketing organizations for work performed to support the commercialization and sale of our products.

Accrued payroll related expenses are primarily comprised of accrued employee termination benefits, bonus and vacation.

Deferred Purchase Price and Other Liabilities—Other liabilities consisted of the following:

	March 31, 2019		December 31, 2018
Deferred purchase price	$	49,758	$	48,394
Milestone liability	30,000		30,000
Lease liabilities, current	2,558		—
Total deferred purchase price and other liabilities	$	82,316	$	78,394

Other Long-Term Liabilities—Other liabilities consisted of the following:

	March 31, 2019		December 31, 2018
Lease liabilities, net of current	$	4,086	$	—
Long-term accrual royalties	1,215		2,230
Long-term deferred purchase price	4,853		4,708
Other long-term liabilities	71		506
Total other long-term liabilities	$	10,225	$	7,444

NOTE 4 – FINANCING ARRANGEMENTS

2017 Loan Agreement

On May 2, 2017, we entered into a Loan and Security Agreement with a new lender (the “2017 Loan Agreement”). Under the 2017 Loan Agreement, the lender made available to us up to $80,000 in debt financing and up to $10,000 in equity financing.

In January 2018, we retired the 2017 Loan Agreement with the execution of the Facility Agreement (discussed below), in connection with which we recognized a debt extinguishment loss of $2,595 comprised of prepayment penalties and exit fees totaling $2,150 and unamortized debt issuance costs of $445.

Facility Agreement

On January 5, 2018 (the “Agreement Date”), we entered into the Facility Agreement (the “Facility Agreement”) with affiliates of Deerfield Management Company, L.P. (collectively, “Deerfield”). Pursuant to the terms of the Facility Agreement, (i) we issued 625,569 shares of our common stock to Deerfield at a price of $67.50 on January 5, 2018, for total proceeds of $42,226, pursuant to a Securities Purchase Agreement, and (ii) Deerfield loaned us $147,774 as an initial disbursement (the “Term Loan”), for total proceeds of $190,000. We used the proceeds from the Facility Agreement to retire the 2017 Loan Agreement (discussed above) and to fund the Infectious Disease Business acquisition on the Agreement Date.

Under the terms of the Facility Agreement, we have the right to draw from Deerfield additional disbursements up to $50,000 (the “Disbursement Option”), which may be made available upon the satisfaction of certain conditions, such as our having achieved annualized net sales of at least $75,000 during the applicable period. The Term Loan bears interest at a rate of 11.75%, while funds distributed pursuant to the Disbursement Option will bear interest at a rate of 14.75%.

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On January 14, 2019, in conjunction with the Vatera Loan Agreement (discussed below),we entered into an amendment to the Facility Agreement (the “Deerfield Facility Amendment”). The Deerfield Facility Amendment was a condition (among other conditions) to the funding of the Vatera Loan Agreement, and became effective upon the funding of the initial $75,000 disbursement under the Vatera Loan Agreement in February 2019.

The Deerfield Facility Amendment (i) modified the definition of “change of control” under the Deerfield Facility to permit Vatera and their respective affiliates to own 50% or more of the equity interests in Melinta on a fully diluted basis; (ii) modified the definition of “Indebtedness” under the Deerfield Facility to exclude certain specific payments under (a) the Agreement and Plan of Merger, dated as of December 3, 2013, among the Medicines Company, Rempex Pharmaceuticals, Inc. and the other parties thereto and (b) the Purchase and Sale Agreement, dated as of November 28, 2017, between The Medicines Company and Melinta Therapeutics, Inc.; (iii) modified the definition of “Permitted Indebtedness” under the Deerfield Facility to permit the payment of a certain amount of the interest on the Vatera Loan Agreement (described below) in cash; (iv) eliminated the requirement that the Company’s audited financial statements for the fiscal year ending December 31, 2018, be delivered without an explanatory paragraph expressing doubt as to the Company’s status as a going concern; (v) reduced the net sales covenant set forth in the Facility Agreement for all periods after December 31, 2018, by 15% (we must now achieve net product sales of at least $63,750 during 2019 and at least $85,000 during 2020); (vi) requires the Company to hold a minimum cash balance of $40,000 through March 31, 2020, and thereafter $25,000; (vii) increased the exit fee under the Deerfield Facility from 2% to 4%; and (viii) made certain other technical modifications, including to accommodate the Vatera Loan Agreement. 

The Deerfield Facility Amendment also provided for the conversion of up to $74,000 in principal ("Convertible Notional Amount") amount of the Term Loan into shares of the Company’s common stock at Deerfield’s option at any time and evidenced by a convertible note (the “Deerfield Convertible Note”), subject to the 4.985% Ownership Cap as described below. The conversion price for this option is the greater of (i) $5.15, which is the minimum initial conversion price, subject to adjustment for stock splits (including a reverse split), stock combinations or similar transactions, and (ii) 95.0% of the lesser of (A) the closing price of the Company’s common stock on the trading day immediately preceding the conversion date and (B) the arithmetic average of the volume weighted average price of the Company’s common stock on each of the three trading days immediately preceding the conversion date. Deerfield's conversion rights are subject to a 4.985% beneficial ownership cap based on the total number of shares of the Company’s common stock outstanding. However, this will not prevent Deerfield from periodically converting up to the 4.985% ownership cap and then selling the shares such that up to $74,000 of the loan is converted over time.

The Deerfield Facility Amendment also provided for $5,000 of convertible loans that were deemed funded by Deerfield upon the initial funding under the Vatera Loan Agreement, with terms identical to the Vatera Loan Agreement (the "Deerfield Portion" of the Loan Agreement (see Vatera Loan Agreement discussion below).

In addition, the Company is required to reserve and keep available a sufficient number of shares of common stock for the purpose of enabling the Company to issue all of the underlying shares of common stock issuable pursuant to the Deerfield's conversion rights under the Facility Agreement, as amended, and under the Loan Agreement.

We concluded that the amendment represented a debt modification and not a new debt arrangement that extinguished the former arrangement. As such, the fair value of any new instruments or features and any fees paid to Deerfield in connection with the amendment are added to the discount balance of the Term Loan immediately prior to the amendment and amortized to interest expense over the remaining term.

Based on an analysis of the provisions and features contained in the Deerfield Facility Amendment, we concluded that arrangement contained a share-settled redemption feature that is required to be bifurcated and recorded at fair value (the "Conversion Right") as a derivative liability. Therefore, the Company performed a valuation, in accordance with ASC 820, Fair Value Measurements ("ASC 820"), to determine the fair value of the Conversion Right, which will reduce the carrying amount of the Term Loan and the value of which, will be amortized over the remaining term of the Term Loan utilizing the effective interest method. The terms of these instruments and the methodology and assumptions used to value each of them are discussed below.

Conversion Right

The initial fair value of the Conversion Right was determined to be $18,962 using a "with and with-out" discounted cash flow ("DCF") model. The with and with-out DCF model compares the fair value of the amended Term Loan with the Conversion Right, which assumes the full Convertible Notional Amount is converted based on market conditions and other factors at the amendment date, with the fair value of the Term Loan assuming no Conversion Right, which is based on a DCF analysis of the contractual terms of the Convertible Notional Amount.

The significant assumptions used in the with and with-out DCF model used to estimate the fair value of the Convertible Notional Amount were: the price of our common stock on the amendment date, an expected volatility of 80%, and an estimated

11

yield of 20.6%. Due to the inherent uncertainty of determining the fair value of the Convertible Notional Amount using Level 3 inputs, the fair value may differ significantly from the values that would have been used had a ready market or observable inputs existed. The fair value of the Conversion Right liability was $12,236 as of March 31, 2019. The decrease during the three months ended March 31, 2019 was $6,726, of which $6,000 was included in other income as a fair value gain and $726 was included as an offset to loss on extinguishment of debt (because of the conversion discussed below) on the consolidated statements of operations. We will remeasure this Conversion Right liability at fair value at each quarterly reporting period.

During the three months ended March 31, 2019, Deerfield converted principal of $2,833 under the Term Loan at a rate of $5.15 per share, resulting in the issuance of 550,000 shares of common stock. We recognized a loss on extinguishment of debt of $346, related primarily to the write off of unamortized debt issuance costs associated with the converted principal amount, partially offset by the gain discussed in the previous paragraph.

Term Loan

The Deerfield Facility Amendment increased the exit fee from 2.0% to 4.0%. Therefore, total required future cash payments are $153,685 (Term Loan principal of $147,774 plus exit fee of $5,911). The exit fee cost is being accreted as additional interest expense over the life of the loan. After adjusting for the Conversion Right, the effective interest rate is 30.0%. The total cost of all items (cash-based interest payments, upfront fees and costs, and the 4% exit fee) is being expensed as interest expense using the effective interest rate of 30.0%. During the three months ended March 31, 2019 and 2018, we recorded cash interest expense of $4,229 and $4,196, respectively, and term loan accretion expense of $1,962 and $1,124, respectively. All amounts were recorded as interest expense in our statement of operations.

The $2,833 of principal converted to common shares during the three months ended March 31, 2019, was carried on the books at the discounted value of $1,694 on the day of conversion. After deducting the $2,833 of principal converted to common shares (and the avoidance of paying the 4.0% exit fee on the amount converted), the new remaining amount of required future cash payments was reduced to $150,739 (remaining term loan principal of $144,941 plus exit fee of $5,798).

Under the Facility Agreement, as amended, the accretion of the principal of the term loan, conversion redemptions, and the future payments, including the 4.0% exit fee due at the end of the term, but excluding the 11.75% rate applied to the $147,774 note per the form of the Facility Agreement, are as follows: 

	Beginning Balance		Record Conversion Right and Issuance Costs					Accretion Expense(2)		Principal Payments and Exit Fee(2)			Conversion			Ending Balance
January 5 - December 31, 2018	$	104,966						$	5,510	—			$	—		$	110,476
January 1 - March 31, 2019	110,476		(23,621		)	(1	)	1,962		—			(1,694		)	87,123
April 1 - December 31, 2019	87,123							7,734		—			—			94,857
Year Ending December 31, 2020	94,857							13,284		—			—			108,141
Year Ending December 31, 2021	108,141							18,044		—			—			126,185
Year Ending December 31, 2022	126,185							17,459		(69,089		)	—			74,555
Year Ending December 31, 2023	74,555							7,079		(75,370		)	—			6,264
Year Ending December 31, 2024	6,264							16		(6,280		)	—			—
Total			$	(23,621	)			$	71,088	$	(150,739	)	$	(1,694	)

(1.) Consists of $18,962, representing the day-one fair value of the conversion right, and $4,659, which is comprised of (a) additional issuance costs of $408, and (b) the initial fair value of the Deerfield Portion of the Vatera Loan Agreement of $4,251; as we did not receive cash from Deerfield but, rather, issued the Deerfield Portion in consideration for amending the Credit Facility, the $4,251 is treated as debt issuance costs. The total of $23,621 will be accreted over the remaining life of the loan.

(2.) Accretion expense, principal payments and the exit fee will be reduced each time Deerfield exercises their conversion right.

As of March 31, 2019, as reflected in the table above, the carrying value of the Credit Facility was $87,123; this amount, combined with $4,274, the carrying value of the amount payable for the Deerfield Portion of the Vatera Loan Agreement, including interest and accretion expense, equals the amount of the notes payable to Deerfield on our consolidated balance sheet of $91,397.

Vatera Loan Agreement

On December 31, 2018, we entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera, a related party, for $135,000 ("Vatera Portion"), and on January 14, 2019, we amended the Loan Agreement pursuant to which, among other things, Deerfield was deemed to have funded an additional $5,000 ("Deerfield Portion") of senior subordinated convertible loans (the "Convertible Loans") under the Vatera Loan Agreement as consideration for entering into the Deerfield Facility Amendment. No amount was drawn under the Loan Agreement as of December 31, 2018, as its

12

effectiveness was contingent upon the satisfaction of several conditions, including the execution of the Deerfield Facility Amendment.

The proceeds of the Convertible Loans will be used for working capital and other general corporate purposes. The Convertible Loans are senior unsecured obligations of the Company and are contractually subordinated to the obligations under the Deerfield Facility. Interest on the Convertible Loans is 5% per year and will be paid in arrears at the end of each fiscal quarter, with 50% of such interest paid in cash and the remaining 50% of such interest paid in kind by increasing the principal balance of the outstanding Convertible Loans in an amount equal thereto (which increase will bear interest once added to such principal balance). The maturity date of the Convertible Loans is January 6, 2025.

The Convertible Loans are convertible at Vatera's option into shares of convertible preferred stock of the Company at a conversion rate of 1.25 shares of preferred Stock per one thousand dollars. The preferred stock is further convertible at Vatera's option into shares of common stock of the Company at a rate of 100 shares of common stock per one share of preferred stock (the “Common Stock Conversion Rate”). At Vatera's option, the Convertible Loans are also directly convertible into common stock at an initial conversion rate equal to the Loan Conversion Rate multiplied by the Common Stock Conversion Rate. The conversion rate for common stock is $8.00 per share. The preferred stock is non-participating, convertible preferred stock, with no preferred dividend rights or voting rights. However, the preferred stock may participate in common stock dividends on the Company’s common stock on an as-converted basis and is senior to the common stock upon liquidation, with a liquidation preference equal to the Conversion Amount for the converted loans, as it may thereafter be adjusted pursuant to the Certificate of Designations (plus, if applicable, the amount of any declared but unpaid dividends on such shares of preferred stock).

An exit fee (the “Interim Exit Fee”) of 1% of the aggregate amount of Convertible Loans funded under the Loan Facility is payable upon repayment or conversion of such funded amount (payable in preferred stock in the case of conversion). In addition, an exit fee (the “Final Exit Fee” and, together with the Interim Exit Fee, the “Exit Fee”) of 3% on the portion of the aggregate committed amount of Convertible Loans not drawn by the Company under the Loan Facility is payable on any repayment in full or conversion in full of the Convertible Loans (payable in preferred stock in the case of conversion).

Subject to the satisfaction (or waiver) of the conditions precedent set forth in the Loan Agreement, as amended, $75,000 of Convertible Loans may be drawn in a single draw on or prior to February 25, 2019, up to $25,000 of additional Convertible Loans may be drawn in a single draw after March 31, 2019, but on or prior to June 30, 2019, and up to $35,000 of additional Convertible Loans may be drawn in a single draw after June 30, 2019, but on or prior to July 10, 2019.

Among the conditions precedent, the Loan Agreement required the approval of the shareholders of Melinta to ensure the number of authorized shares of common stock was sufficient to accommodate the potential conversion of the Convertible Loans and approval of the issuance of the Convertible Loans, in accordance with Nasdaq rules. On February 19, 2019, at a Special Meeting of the shareholders, the shareholders approved both a reverse stock split and an increase of the authorized shares, as well as the issuance of the Convertible Notes. In addition, before each draw, management must certify to Vatera that it does not foresee breaching any covenants under the Deerfield Credit Facility, and the Company must establish a working capital revolver of at least $10,000 in order to draw the final $35,000 tranche under the Loan Agreement in July 2019. Melinta drew the first tranche ("Initial Draw") of $75,000 on February 22, 2019 ("Initial Draw Date"), at which time we deemed issuance of the $5,000 Deerfield Portion, for a total of $80,000 outstanding.

Based on an analysis of the provisions and features contained in the Loan Agreement, including the embedded conversion option, we recognized the Convertible Loans as a liability in its entirety. Since Vatera is a related party as Melinta's largest shareholder, and the Convertible Notes contained below-market terms, we determined that the par value did not represent the fair value of the Convertible Notes. Therefore, the Company performed a valuation, in accordance with ASC 820, to determine the appropriate discount to apply to the principal amount of the Convertible Notes, which was deemed a capital contribution from a related party.

    We used a convertible bond lattice model to estimate the fair value of the Convertible Notes (Level 3 inputs), which resulted in an estimated fair value of the Vatera Portion of $63,758 on the Initial Draw Date. The related discount and capital contribution of $11,242 ("Valuation Discount") was recorded as a reduction in the carrying amount of the Convertible Notes with an offsetting amount recorded to additional paid-in-capital. The estimated fair value of the Deerfield Portion of the Convertible Loans, for which Melinta did not receive cash but was, rather, consideration for amending the Deerfield Credit Facility, was $4,251, which was recorded as additional debt issuance costs on the Deerfield Term Loan. The discount of $749 was recorded as a discount to the Deerfield Portion of the Convertible Loans. We concluded that there was no beneficial conversion feature present given the conversion price is not "in the money" and that we are not required to revalue the Convertible Notes at the end of each reporting period.

The significant assumptions used in the convertible bond lattice model used to estimate the fair value of the Convertible Notes were: the price of our common stock on the Initial Draw Date, an expected volatility of 76%, and an estimated yield of 29.8%. Due to the inherent uncertainty of determining the fair value of the Convertible Notes using Level 3

13

inputs, the fair value may differ significantly from the values that would have been used had a ready market or observable inputs existed.

In connection with the Initial Draw, the Company incurred debt issue costs of $1,775, which is being amortized as additional interest expense over the term of the Convertible Loans. In addition, we will accrete the Interim Exit Fee as additional interest expense over the term of the Convertible Loans, which will ultimately total $928. The total cost of all items (cash and PIK interest expense as well as amortization/accretion of the debt issuance costs, the Interim Exit Fee, and the Valuation Discount) is being recognized as interest expense using an effective interest rate of approximately 8.6%.

The following table summarizes the fair value of the Convertible Notes on the Initial Draw Date:

Principal amount of Convertible Loans	$	80,000
Discount and related capital contribution associated with below market terms of Convertible Loans	(11,242		)
Discount on Deerfield portion of Convertible Loans	(749		)
Debt issue costs	(1,775		)
Carrying value at the Initial Draw Date	$	66,234

Of the $66,234, $4,251 was the initial carrying value of the Deerfield Portion, and $61,983 (net of $1,775 of debt issuance costs) was the initial carrying value of the Vatera Portion.

The accretion of the principal of the Loan Agreement, paid-in kind interest, and the future payments, including the exit fees due at the end of the term, for the $80,000 outstanding under the arrangement (including the $5,000 "Deerfield Portion"), are as follows: 

	Beginning Balance		Paid-in Kind Interest		Accretion  Expense		Principal Payments and Exit Fee			Ending Balance
February 25 - March 31, 2019	$	66,234	$	211	$	179	$	—		$	66,624
April 1 - December 31, 2019	66,624		1,542		1,370		—			69,536
Year Ending December 31, 2020	69,536		2,098		2,037		—			73,671
Year Ending December 31, 2021	73,671		2,146		2,296		—			78,113
Year Ending December 31, 2022	78,113		2,200		2,586		—			82,899
Year Ending December 31, 2023	82,899		2,257		2,905		—			88,061
Year Ending December 31, 2024	88,061		2,321		3,264		—			93,646
Year Ending December 31, 2025	93,646		38		57		(93,741		)	—
Total			$	12,813	$	14,694	$	(93,741	)

Of the $66,624 carrying value of the Convertible Notes as of March 31, 2019, as reflected in the table above, $62,350 related to the Vatera Portion and $4,274 related to the Deerfield Portion.

NOTE 5 – FAIR VALUE MEASUREMENTS

The following table lists our assets and liabilities that are measured at fair value and the level of the lowest significant inputs used to measure their fair value at March 31, 2019, and December 31, 2018. The money market fund is included in cash & cash equivalents on the balance sheet; the other items are in the captioned line of the balance sheet. 

	As of March 31, 2019
	Level 1		Level 2		Level 3			Total
Assets:
Money market fund	$	33,068	$	—	$	—		$	33,068
Total assets at fair value	$	33,068	$	—	$	—		$	33,068
Liabilities:
Royalty liability in deferred purchase price	$	—	$	—	$	(1,102	)	$	(1,102	)
Royalty liability in contingent consideration	—		—		(4,854		)	(4,854		)
Warrant liability	—		—		(23		)	(23		)
Conversion liability (see Note 4)	—		—		(12,236		)	(12,236		)
Total liabilities at fair value	$	—	$	—	$	(18,215	)	$	(18,215	)

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	As of December 31, 2018
	Level 1		Level 2		Level 3			Total
Assets:
Money market fund	$	32,883	$	—	$	—		$	32,883
Total assets at fair value	$	32,883	$	—	$	—		$	32,883
Liabilities:
Current royalty contingent consideration from IDB acquisition	$	—	$	—	$	(1,006	)	$	(1,006	)
Long-term royalty contingent consideration from IDB acquisition	—		—		(4,708		)	(4,708		)
Warrant liability	—		—		(38		)	(38		)
Total liabilities at fair value	$	—	$	—	$	(5,752	)	$	(5,752	)

The common stock warrants were valued using a Black-Scholes option-pricing model (Level 3 inputs). The significant inputs include the risk-free interest rate, remaining contractual term, and expected volatility. Significant increases or decreases in any of these inputs in isolation would result in a significantly different fair value measurement. An increase in the risk-free interest rate, and/or an increase in the remaining contractual term or expected volatility, would result in an increase in the fair value of the warrants.

The following table summarizes the changes in fair value of our Level 3 assets and liabilities for the three months ended March 31, 2019 (there were no transfers into or out of Level 3 assets or liabilities during the period): 

Level 3 Liabilities	Fair Value at December 31, 2018			Accretion Recorded in Interest Expense			Change in Unrealized Gains (Losses)		(Issuances) Settlements, Net			Net Transfer Between Liabilities			Fair Value at March 31, 2019
Current royalty contingent consideration from IDB acquisition	$	(1,006	)	$	(176	)	$	—	$	382		$	(302	)	$	(1,102	)
Long-term royalty contingent consideration from IDB acquisition	(4,708		)	(448		)	—		—			302			(4,854		)
Warrant liability	(38		)	—			15		—			—			(23		)
Conversion liability (see Note 4)	—			—			6,000		(18,236		)	—			(12,236		)
Total liabilities at fair value	$	(5,752	)	$	(624	)	$	6,015	$	(17,854	)	$	—		$	(18,215	)

NOTE 6 – LEASES

As of March 31, 2019, we were a lessee under three operating lease agreements for office facilities and an operating lease for vehicles for our field-based employees, principally sales representatives.

As more fully described in Note 2, we adopted ASC 842 on January 1, 2019 ("Effective Date"), which requires lessees to recognize assets and liabilities on the balance sheet for most leases recognize expense on the income statement in a manner similar to previous accounting. We elected the optional transition method, whereby an entity can elect to apply the standard at the Effective Date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative prior periods. Consequently, the prior comparative period’s financials will remain the same as those previously presented. In addition, the transition to ASC 842, did not result in a cumulative-effect adjustment to the opening balance of retained earnings.

The company has not elected the practical expedient under which the lease components would not be separated from the nonlease components. Therefore, the Company allocates the total transaction price to the lease component and nonlease components on a relative stand-alone price basis obtained from the lessor. Our facility leases include one or more options to renew, with renewal terms that can extend the lease term from three to five years. As of March 31, 2019, the renewal options were not reasonably certain; therefore, the payments associated with renewal were excluded from the measurement of the lease liability and ROU asset at March 31, 2019. The Company determined that there was no discount rate implicit in its leases. Thus, the Company used its incremental borrowing rate of 15% to discount the lease payments in determination of its ROU assets and lease liabilities for all leases.

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Upon adoption of ASU 2016-02, the Company determined its ROU assets related to the operating leases for its principal research facility in New Haven, Connecticut, and its office facilities in Chapel Hill, North Carolina were impaired and therefore reduced to a fair value of zero with a corresponding charge to retained opening earnings of $1,942. See Note 2 for further details. As of March 31, 2019, the lease liability associated with these leases was $462 and $521, respectively.

In March 2019, the Company terminated its operating lease for its principal research facility in New Haven, Connecticut. In connection with the termination, the Company agreed to pay the lessor a $462 early termination fee. As a result, the Company reduced the lease liability equal to the termination fee and recorded a gain of $792, which was recorded in other income.

Lease cost recognized under ASC 842 was $474 for the three months ended March 31, 2019. Lease cost for the three months ended March 31, 2018 was $333, recognized under ASC 840, the lease accounting standard in effect prior to 2019.

As of March 31, 2019, the Company's ROU assets and lease liabilities were as follows:

	Classification	March 31, 2019
Assets
Total operating lease assets	Other assets	$	4,902
Liabilities
Current	Deferred purchase price and other liabilities	$	2,558
Noncurrent	Other long-term liabilities	4,086
Total operating lease liabilities		$	6,644

As of March 31, 2019, the maturities of the Company's lease liabilities were as follows:

Maturity of Lease Liabilities	Amount
Remainder of 2019	$	2,136
2020	2,248
2021	1,962
2022	1,235
2023	626
After 2023	260
Total operating lease payments	$	8,467
Less: Interest	(1,823		)
Present value of operating lease liabilities	$	6,644

As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting standard, ASC 840, the total commitment for our non-cancelable operating lease was $8,568 as of December 31, 2018:

Maturity of Lease Liabilities	Amount
2019	$	2,348
2020	2,269
2021	1,827
2022	1,238
2023	624
2024 and thereafter	262
Total operating lease payments	$	8,568

As of March 31, 2019, the weighted average remaining lease term was 3.7 years, calculated on the basis of the remaining lease term and the lease liability balance of each lease as of March 31, 2019.

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The following table sets forth supplemental cash flow information for the three months ended March 31, 2019:

	Three Months Ended March 31, 2019
Cash paid for amounts included in the measurement of operating lease liabilities	$	621
Right of use assets obtained in exchange for lease obligations	$	378

NOTE 7 – STOCK-BASED COMPENSATION

In the first three months of 2019, we granted 64,400 stock options and 440,000 restricted stock units under our incentive stock plans.  At March 31, 2019, approximately 1,502,400 shares were reserved for future grants. As of March 31, 2019, there were 450,000 restricted stock unit awards outstanding, and details regarding the number of options outstanding and exercisable as of March 31, 2019, is as follows: 

	Outstanding		Exercisable
Number of shares	658,532		147,281
Weighted-average remaining life	8.4		5.3
Weighted-average exercise price	$	52.74	$	132.35
Intrinsic value	$	—	$	—

The total unrecognized share-based compensation expense at March 31, 2019, was approximately $8,969, which is expected to be recognized over the next 3 years.

Stock-based compensation expense recognized in the three months ended March 31, 2019, was as follows:

	Three Months Ended March 31,
	2019		2018
Cost of goods sold	$	—	$	125
Research and development	79		131
Selling, general and administrative	813		699
Total	$	892	$	955

No related tax benefits associated with stock-based compensation expense have been recognized and no related tax benefits have been realized from the exercise of stock options due to our net losses.

NOTE 8 – INCOME TAXES

At the end of each interim period, the Company makes its best estimate of the effective tax rate expected to be applicable for the full calendar year and uses that rate to provide for income taxes on a current year-to-date basis before discrete items. If a reliable estimate cannot be made, the Company may make a reasonable estimate of the annual effective tax rate, including use of the actual effective rate for the year-to-date. The impact of the discrete items is recorded in the quarter in which they occur.

The Company utilizes the liability method of accounting for income taxes and deferred taxes which are determined based on the differences between the financial statements and tax basis of assets and liabilities given the provisions of the enacted tax laws. In assessing the realizability of the deferred tax assets, the Company considered whether it is more likely than not that some portion or all of the deferred tax assets will not be realized through the generation of future taxable income. In making this determination, the Company assessed all of the evidence available at the time including recent earnings, forecasted income projections, and historical financial performance. The Company has fully reserved deferred tax assets as a result of this assessment.

Based on the Company’s full valuation allowance against the net deferred tax assets, the Company’s effective tax rate for the calendar year is zero, and zero income tax expense was recorded in the three and nine months ended March 31, 2019 and 2018.

NOTE 9 –NET LOSS PER SHARE

Basic net loss attributable to common shareholders per share is computed by dividing the net loss attributable to common shareholders by the weighted-average number of common shares outstanding for the period. We compute diluted loss per common share after giving consideration to the dilutive effect of stock options and warrants that are outstanding during the period, except where such nonparticipating securities would be antidilutive. Because we have reported net losses for the three months ended March 31, 2019 and 2018, diluted net loss per common share is the same as basic net loss per common share for those periods. The weighted-average shares outstanding, reported loss per share and potential dilutive common share

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equivalents for the three months ended March 31, 2019 and March 31, 2018, have been retroactively adjusted to reflect the 1-for-5 reverse stock split which was effective February 22, 2019.

The following potentially dilutive securities (in common stock equivalent shares) have been excluded from the computation of diluted weighted-average shares outstanding because such securities have an antidilutive impact due to losses reported:

	Three Months Ended March 31,
	2019	2018
Warrants outstanding	766,680	770,486
Stock options outstanding	658,532	397,429
Restricted stock units outstanding	450,000	56,092
	1,875,212	1,224,007

NOTE 10 – COMMITMENTS AND CONTINGENCIES

As discussed in Note 11, on November 3, 2017, Melinta merged with Cempra, Inc. in a business combination. Prior to the merger, on November 4, 2016, a securities class action lawsuit was commenced in the United States District Court, Middle District of North Carolina, Durham Division, naming Cempra, Inc. (now known as Melinta Therapeutics, Inc.) (for purposes of this Contingencies section, “Cempra”) and certain of Cempra’s officers as defendants. Two substantially similar lawsuits were filed in the United States District Court, Middle District of North Carolina on November 22, 2016, and December 30, 2016, respectively. Pursuant to the Private Securities Litigation Reform Act, on July 6, 2017, the court consolidated the three lawsuits into a single action and appointed a lead plaintiff and co-lead counsel in the consolidated case. On August 16, 2017, the plaintiff filed a consolidated amended complaint. The plaintiff alleged violations of the Securities Exchange Act of 1934 (the “Exchange Act”) in connection with allegedly false and misleading statements made by the defendants between July 7, 2015, and November 4, 2016 (the “Class Period”). The plaintiff sought to represent a class comprised of purchasers of Cempra’s common stock during the Class Period and sought damages, costs and expenses and such other relief as determined by the court. On September 29, 2017, the defendants filed a motion to dismiss the consolidated amended complaint. After the motion to dismiss was fully briefed, the court heard oral arguments on July 24, 2018. On October 26, 2018, the court granted the defendants’ motion to dismiss and dismissed the plaintiff’s consolidated amended complaint in its entirety. On November 21, 2018, the plaintiff filed its notice of appeal, and on December 20, 2018, the Fourth Circuit entered its briefing schedule. The appellant filed its brief on January 28, 2019; the appellee filed its response brief on February 27, 2019; and the appellant filed its reply brief on March 20, 2019. The court has not yet ruled on the appeal. We believe that we have meritorious defenses and intend to defend the lawsuit vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On December 21, 2016, a shareholder derivative lawsuit was commenced in the North Carolina Durham County Superior Court, naming certain of Cempra’s former and current officers and directors as defendants and Cempra as a nominal defendant, and asserting claims for breach of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement, and corporate waste (the “December 2016 Action”). A substantially similar lawsuit was filed in the North Carolina Durham County Superior Court on February 16, 2017 (the “February 2017 Action”). The complaints are based on similar allegations as asserted in the securities lawsuits described above and seek unspecified damages and attorneys’ fees. Both cases were served and transferred to the North Carolina Business Court as mandatory complex business cases. The Business Court consolidated the February 2017 Action into the December 2016 Action and appointed counsel for the plaintiff in the December 2016 Action as lead counsel. On July 6, 2017, the court stayed the action pending resolution of the putative securities class action. That stay was then lifted. The plaintiff filed an amended complaint on December 29, 2017, and was required to file a further amended complaint by February 6, 2018. On February 6, 2018, the plaintiff filed his second amended complaint. On March 8, 2018, the defendants filed their motion to dismiss or, in the alternative, stay the plaintiff’s second amended complaint. On April 9, 2018, the plaintiff filed his opposition to the defendants’ motion. The defendants filed their reply on April 26, 2018. On June 27, 2018, the parties filed a joint stipulation and consent order to stay the case until (1) 30 days after a final order dismissing the putative securities class action with prejudice is entered; or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to stay the proceedings on substantially the same terms. On June 29, 2018, the court entered an order staying the case pursuant to the joint stipulation, which expired by its term following entry of the court’s dismissal order in the above putative securities class action. On November 29, 2018, the parties filed a second joint stipulation to continue the stay until (1) 30 days after the putative securities class action appeal and any appeals therefrom have been resolved; or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to a stay of proceedings on substantially the same terms. On November 30, 2018, the court entered an order staying the case pursuant to the second joint stipulation. We believe that we have meritorious defenses and we intend to defend the lawsuit

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vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On January 3, 2018, the plaintiff who commenced the February 2017 Action, which was subsequently consolidated into the December 2016 Action, transmitted to the former Acting Chief Executive Officer of Cempra a litigation demand (the “Demand”). The Demand requested that Cempra’s Board of Directors (the “Board”) “commence an independent investigation into the matters raised” in the complaint filed in the February 2017 Action and the Demand, “take any and all appropriate steps for Cempra to recover, through litigation if necessary, the damages proximately caused by the directors’ and officers’ alleged breaches of fiduciary duty,” and “implement corporate governance enhancements to prevent recurrence of the alleged wrongdoing.” The Board has not yet formally responded to the Demand.

On July 31, 2017, a shareholder derivative lawsuit was commenced in the Court of Chancery of the State of Delaware, naming certain of Cempra’s former and current officers and directors as defendants and Cempra as nominal defendant, and asserting claims for breach of fiduciary duty, unjust enrichment, and corporate waste. The complaint is based on similar allegations as asserted in the putative securities class action described above and seeks unspecified damages and attorneys’ fees. On October 23, 2017, the defendants filed a motion to dismiss or, in the alternative, stay, the complaint, which was supported by an opening brief filed on November 9, 2017. On January 8, 2018, the plaintiff filed his answering brief in opposition to the defendants’ motion. The defendants filed their reply in support of their motion on February 7, 2018. On June 18, 2018, the parties filed a joint letter (1) indicating they have agreed to stay the case until the pending motion to dismiss in the November 4, 2016, consolidated federal securities action pending in the United States District Court, Middle District of North Carolina, Durham Division is decided; and (2) requesting that the June 22, 2018, oral argument scheduled for the defendants’ motion to dismiss be canceled. On June 27, 2018, the parties filed a stipulation and proposed order to stay the case until (1) 30 days after a final order dismissing the November 4, 2016, consolidated federal securities action pending in the United States District Court, Middle District of North Carolina, Durham Division with prejudice is entered; or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to stay the proceedings on substantially the same terms. On June 28, 2018, the court granted the proposed order and stayed the case on such terms, with that stay expiring by its term following entry of the court’s dismissal order in the above putative securities class action. On November 28, 2018, the parties filed a joint stipulation agreeing to stay the case, including all discovery, until (1) 30 days after the appeal for the November 4, 2016, consolidated federal securities action pending in the United States District Court, Middle District of North Carolina, Durham Division, and any appeals therefrom, was resolved or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to a stay of proceedings on substantially the same terms. On November 30, 2018, the court stayed the case pursuant to the joint stipulation. We believe that we have meritorious defenses and we intend to defend the lawsuit vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On September 15, 2017, a shareholder derivative lawsuit was commenced in the United States District Court for the Middle District of North Carolina, Durham Division, naming certain of Cempra’s former and current officers and directors as defendants and Cempra as nominal defendant, and asserting claims for breach of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement, corporate waste, and violation of Section 14(a) of the Exchange Act. The complaint is based on similar allegations as asserted in the putative securities class action described above and seeks unspecified damages and attorneys’ fees. On December 1, 2017, the parties filed a joint motion seeking to stay the shareholder derivative lawsuit pending resolution of the putative securities class action, which stipulation was ordered by the court on December 11, 2017. On December 11, 2018, the parties filed a joint status report indicating that they believe the action remains stayed pending the outcome of the putative securities class action. We believe that we have meritorious defenses and we intend to defend the lawsuit vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On October 22, 2018, the Company received a litigation demand on behalf of putative Cempra shareholder Dr. Alan Cauldwell (the “Demand”), purporting to reinstate Dr. Cauldwell’s previous demand, dated as of January 3, 2018, held in abeyance after further discussion and negotiation with the Company. The Demand appears premised on the same factual allegations as the shareholder derivative lawsuits previously filed against the Company, as detailed above, and requests, in part, that Cempra’s board of directors commence an investigation of the misconduct alleged therein. We believe that we have meritorious defenses to Dr. Cauldwell’s claims, and we intend to defend any litigation relating to the Demand vigorously.

On December 3, 2018, James Naples, a purported Company shareholder, filed a putative class action suit against the Company and its Board of Directors in the Court of Chancery of the State of Delaware, alleging that the Board had breached its fiduciary duties related to a proposed, and subsequently abandoned, $75,000 common stock financing that was contemplated with affiliates of Vatera Holdings LLC. The suit alleged that the Board of Directors breached its fiduciary duties by, among other things, failing to disclose all material information to Company shareholders. The suit sought, among other things, to enjoin the shareholder vote on the financing proposal until additional disclosures were issued. On February 27, 2019, the suit

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was voluntarily dismissed with prejudice as moot, though the court has retained jurisdiction solely for the purpose of adjudicating a claim by the plaintiff for attorneys' fees and expenses, which the Company anticipates will be submitted.

On December 18, 2018, we filed a complaint in the Court of Chancery of the State of Delaware against Medicines for breach of contract claim and fraud arising from the Purchase and Sale Agreement (“Purchase Agreement”), dated November 28, 2017, pursuant to which we acquired the Infectious Disease Businesses from Medicines (the “Medicines Action”). In the complaint, we alleged claims for damages of at least $68,300. On December 28, 2018, we received a letter from Medicines demanding the payment of Milestone No. 4 under the Agreement and Plan of Merger, dated as of December 3, 2013, among Medicines, Rempex Pharmaceuticals, Inc. and the other parties thereto (“Merger Agreement”), in the amount of $30,000 (a milestone which the Company had assumed as an “Assumed Liability” under the Purchase Agreement). On January 7, 2019, we notified Medicines that we would not be making the Milestone No. 4 payment in the amount of $30,000, or the First Deferred Payment in the amount of $25,000 under the Purchase Agreement, because the Company had asserted claims in the litigation in excess of these amounts. On January 9, 2019, Medicines filed a motion to dismiss our claims, and on March 15, 2019, Medicines filed its Opening Brief in Support of Its Motion to Dismiss. On April 23, 2019, we filed an Amended Complaint alleging claims for damages of at least $80,000. On May 3, 2019, Medicines filed a motion to dismiss our claims in the Amended Complaint.

On March 28, 2019, Fortis Advisors LLC, in its capacity as the authorized legal representative of the former shareholders of Rempex Pharmaceuticals, Inc. (“Former Rempex Shareholders”), filed a complaint in the Court of Chancery of the State of Delaware against Medicines and us (the "Fortis Action"). The Former Rempex Shareholders’ complaint alleges breach of contract claims against Medicines arising out of the Merger Agreement and alleges a third-party beneficiary claim against us for breach of the Purchase Agreement. The Former Rempex Shareholders’ complaint seeks to hold us and Medicines jointly and severally liable for alleged damages of at least $30,000, as well as pre- and post-judgment interest, fees, costs, expenses, and disbursements. On April 18, 2019, we filed a motion to dismiss the Former Rempex Shareholders’ claim against us. Also on April 18, 2019, Medicines filed its answer to the Former Rempex Shareholders’ complaint, as well as a crossclaim against us. Medicines’ crossclaim asserts a breach of contract claim against us arising out of the Purchase Agreement. Medicines seeks an order requiring us to comply with all obligations under the Purchase Agreement, damages in an amount to be determined at trial, as well as pre- and post-judgment interest, fees, costs, expenses, and disbursements. On May 8, 2019, we filed an answer to Medicines' crossclaim, as well as a motion to consolidate the Fortis Action and the Medicines Action. We believe that we have meritorious defenses and we intend to defend the lawsuit and crossclaim vigorously.

Other than as described above, we are not a party to any legal proceedings and we are not aware of any claims or actions pending or threatened against us. In the future, we might from time to time become involved in litigation relating to claims arising from our ordinary course of business.

NOTE 11 – SEVERANCE AND EXIT COSTS

A summary of merger and non-merger activity in our severance accrual (included in accrued expenses or long-term liabilities on the condensed consolidated balance sheets) is below. 

Balance - December 31, 2018	$	9,767
Additional severance accruals (recorded in SG&A)	974
Severance payments	(5,550		)
Balance - March 31, 2019	$	5,191

On March 31, 2019, $5,120 was included in accrued expenses and $71 was included in long-term liabilities. We also recognized $0 and $75 of additional stock-based compensation expense related to the acceleration of equity awards for terminated employees under ASC 718 as severance expense during the three months ended March 31, 2019 and 2018, respectively.

In March 2019, the Company terminated its operating lease for its principal research facility in New Haven, Connecticut. In connection with the termination, the Company agreed to pay the lessor a $462 early termination fee.

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Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The unaudited interim financial statements and this Management’s Discussion and Analysis of Financial Condition and Results of Operations should be read in conjunction with the audited financial statements and notes thereto for the year ended December 31, 2018, and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in our Annual Report on Form 10-K for the year ended December 31, 2018. In addition to historical information, this discussion and analysis contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements are subject to risks and uncertainties, including those set forth under “Part I. Item 1. Business - Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2018, and elsewhere in this report, that could cause actual results to differ materially from historical results or anticipated results.

Overview

We are a commercial-stage pharmaceutical company focused on developing and commercializing differentiated anti-infectives for the hospital and select non-hospital, or community, settings that address the need for effective treatments for infections due to resistant gram-negative and gram-positive bacteria. We currently market four antibiotics to treat a variety of infections caused by these resistant bacteria.

We are not currently generating revenue from operations that is sufficient to cover our operating expenses and do not anticipate generating revenue sufficient to offset operating costs in the short-term. We have incurred losses from operations since our inception and had an accumulated deficit of $748.3 million as of March 31, 2019, and we expect to incur substantial expenses and further losses in the short term for the development and commercialization of our product candidates and approved products. In addition, we have substantial commitments in connection with our acquisition of the infectious disease business of The Medicines Company that we completed in January 2018, including payments related to deferred purchase price consideration, assumed contingent liabilities and the purchase of inventory. And, there are certain financial-related covenants under our Deerfield Facility, as amended in January 2019, including requirements that we (i) file an Annual Report on Form 10-K for the year ending December 31, 2019, with an audit opinion without a going concern qualification, (ii) maintain a minimum cash balance of $40.0 million through March 2020, and thereafter, a balance of $25.0 million, and (iii) achieve net revenue from product sales of at least $63.75 million for the year ending December 31, 2019. (See Note 4 to the condensed consolidated financial statements for further details.)

Our future cash flows are dependent on key variables such as our ability to access additional capital under our Vatera and Deerfield credit facilities, our ability to secure a working capital revolver, which is allowed under the Deerfield Facility and required under the Vatera facility, and most importantly, the level of sales achievement of our four marketed products. Our current operating plans include assumptions about our projected levels of product sales growth in the next 12 months in relation to our planned operating expenses. Revenue projections are inherently uncertain but have a higher degree of uncertainty in an early-stage commercial launch, which we have in Baxdela and Vabomere, where there is not yet a robust sales history. While we have a plan to achieve the current expected sales levels of our products, we are unable to conclude based on applying the requirements of FASB Accounting Standards Codification 205-40, Presentation of Financial Statements - Going Concern (“ASC 205”) that such revenue is “probable” as defined under this accounting standard. In addition, given our forecasted product sales are not deemed probable, our ability to draw the additional $50.0 million of capacity under the Deerfield Facility, which is conditional based on meeting certain sales-based milestones before the end of 2019, is also not considered to be probable. And further, given the softness of our product sales to date, we believe that there is risk in meeting the minimum sales covenant for 2019 under the terms of the Deerfield Credit Facility. As such, we are not able to conclude under ASC 205 that the actions discussed below will be effectively implemented and, therefore, our current operating plans, existing cash and cash collections from existing revenue arrangements and product sales may not be sufficient to fund our operations for the next 12 months. As such, we believe there is substantial doubt about our ability to continue as a going concern. The financial statements do not include any adjustments relating to the recoverability and classification of liabilities that might be necessary should we be unable to continue as a going concern.

In the fourth quarter of 2018, the Company took actions to reduce its operating spend, including a reduction to the workforce of approximately 20.0% and a decision to begin to wind down its research and discovery function. To provide additional operating capital, in December 2018, the Company entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera Healthcare Partners LLC and Vatera Investment Partners LLC (together, “Vatera”) pursuant to which Vatera committed to provide $135.0 million over a period of five months, subject to the satisfaction of certain conditions (see Note 4 to the consolidated financial statements). We drew $75.0 million under this facility in February 2019, and while the remaining $60.0 million is available through early July 2019, subject to certain closing conditions, it is not certain that all of these conditions will be met. Among these conditions, before each draw, management must certify to Vatera that it does not foresee breaching any covenants under the Deerfield Credit Facility, and the Company must establish a working capital revolver of at least $10.0 million in order to draw the final $35.0 million tranche under the Loan Agreement in July 2019.

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. 

As of March 31, 2019, the Company had $116.9 million in cash and cash equivalents. In addition to pursuing the additional $60.0 million available under the Vatera Facility and a working capital revolver for up to $20.0 million, we are also exploring options to modify the terms of certain liabilities to increase our liquidity over the next 12 to 18 months. If our cash collections from revenue arrangements, including product sales, and other financing sources are not sufficient, we plan to control spending and would take further actions to adjust the spending level for operations if required. However, there is no guarantee that we will be successful in executing any or all of these initiatives.

Recent Developments

On December 31, 2018, we entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera Healthcare Partners LLC, Vatera Investment Partners LLC (together, “Vatera”) and Deerfield pursuant to which Vatera committed to provide $135.0 million over a period of five months, subject to the satisfaction of certain conditions (see Note 4 to the consolidated financial statements). In addition, the Loan Agreement provides that $5.0 million was deemed to have been loaned by Deerfield to us under the same terms and conditions. This agreement was approved by shareholders at a Special Meeting held on February 19, 2019. We drew $75.0 million under this facility in February 2019.

On January 14, 2019, Melinta and Deerfield entered into an amendment to the Deerfield Facility (the “Deerfield Facility Amendment”). The amendments set forth in the Deerfield Facility Amendment adjust certain covenants and provides for the redemption of up to $74.0 million into shares of the Company’s common stock at Deerfield’s option, at any time, subject to a 4.985% ownership cap. See Note 4 to the condensed consolidated financial statements for further details.

In March 2019, we designed a clinical study for a new formulation of Orbactiv, which will reduce the infusion time from the current three hours to one hour. We expect the study to be conducted in the second half of 2019 and to include approximately 100 patients. With the approval of a formulation with an infusion time of one hour, we expect to more aggressively compete in the hospital and non-hospital out-patient infusion settings for the treatment of patients with serious skin infections.

In April 2019, we filed an sNDA for Baxdela for the treatment of community-acquired bacterial pneumonia ("CABP"). We await the formal FDA acceptance of the filing as well as confirmation of the PDUFA date (or approval date). The approval of Baxdela for CABP would expand the market potential for Baxdela beyond ABSSSI with our target audience in the hospital and non-hospital setting.

Results of Operations for the Three Months Ended March 31, 2019 and 2018

Revenue

We recorded product sales, net of adjustments for returns and other allowances, of $11.8 million for both the three months ended March 31, 2019 and three months ended March 31, 2018. On a year-over-year basis, growth in sales of Vabomere and Minocin were offset with lower Baxdela and Orbactiv sales.

For the three months ended March 31, 2019, contract research revenue decreased $1.6 million compared to the three months ended March 31, 2018, due primarily to lower reimbursable expenses incurred in connection with the Baxdela CABP study, which is reimbursed 50% by Menarini. This decrease was partially offset by increases in reimbursement related to expenses incurred for other licensed products. We completed the enrollment for the Baxdela CABP study in July 2018, we filed the sNDA in April 2019, and we expect a decision on FDA approval for Baxdela for the CABP indication in the fourth quarter of 2019. As such, contract research revenue will continue to decrease over the next quarter of 2019.

For the three months ended March 31, 2019, license revenue was $0.9 million compared to $0 for the three months ended March 31, 2018. The license revenue in the current period relates to rights licensed to a partner to commercialize Baxdela in the Middle East/North Africa territories.

Cost of goods sold

Cost of goods sold for the three months ended March 31, 2019 and the three months ended March 31, 2018 was $7.4 million and $7.7 million, respectively. Cost of goods sold includes the direct manufacturing cost of products sold and allocated manufacturing overhead, including royalties for intellectual property supporting our products. Cost of goods sold in the three months ended March 31, 2019 and March 31, 2018, also includes $4.1 million and $4.7 million, respectively, of amortization of product rights (intangible assets) resulting from the purchase accounting for the IDB acquisition.

Research and Development Expense

For the three months ended March 31, 2019, our research and development expense decreased $10.8 million compared to the three months ended March 31, 2018, driven primarily by:

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• $6.6 million for development activities, principally clinical studies, supporting Baxdela, Vabomere, Orbactiv and Minocin, as well as development of solithromycin, which we wound down last year;

• $2.0 million resulting from winding down our early stage research programs;

• $0.7 million due to lower quality and regulatory activities, due to integration of the IDB products;

• $0.4 million due to lower personnel-related and travel expenses; and

• $0.9 million due to other costs.

We completed the CABP study in 2018, and we filed an sNDA with the FDA for Baxdela for the treatment of adult patients with CABP in April 2019. In addition, we terminated our agreement with BARDA for the development of solithromycin in 2018, and we wound down our early stage research programs in the first quarter of 2019. Accordingly, the company's research and development expenses will decrease significantly in 2019 compared to 2018.

Selling, General and Administrative Expense

For the three months ended March 31, 2019, selling, general and administrative expense decreased $8.7 million compared to the three months ended March 31, 2018, driven primarily by lower costs in connection with the integration of the Melinta, Cempra and IDB businesses in late 2018:

• lower legal, consulting and other professional fees of $4.0 million;

• lower commercial support and expenses of $2.4 million;

• lower medical education of $1.1 million;

• lower severance costs of $0.5 million; and

• $0.8 million of gain from extinguishing lease liabilities.

Other Income (Expense), Net

Other expense, net, increased by $16.1 million for the three months ended March 31, 2019, compared to the three months ended March 31, 2018, due principally to the recognition in 2018 of a $24.1 million gain on the remeasurement of our warrant liability and $2.7 million in grant income recognized under contracts that were terminated in 2018. Partially offsetting these decreases year-over-year was a gain of $6.0 million on the remeasurement of our conversion liability, lower non-cash interest expense related to the accretion of certain liabilities assumed in the IDB Transaction that were fully accreted or nearly fully accreted by the end of 2018, as well as a loss on the extinguishment of debt in 2018 (where there was no such extinguishment activity in the first quarter of 2019).

Critical Accounting Policies and Estimates

Our significant accounting policies are more fully described in our 2018 Annual Report on Form 10-K and Note 2, “Summary of Significant Accounting Policies,” in the Notes to the Consolidated Financial Statements, which includes further information about recently issued accounting pronouncements. There were no material changes in our critical accounting policies since the filing of our 2018 Annual Report on Form 10-K other than discussed below.

Liquidity and Capital Resources

We have incurred significant losses and negative cash flows from operating activities since our inception. As of March 31, 2019, we had an accumulated deficit of $748.3 million, and we expect to continue to incur significant losses in the short term. In addition, we have substantial commitments in connection with our acquisition of the infectious disease business of The Medicines Company that we completed in January 2018, including payments related to deferred purchase price consideration, assumed contingent liabilities and the purchase of inventory. And, there are certain financial-related covenants under our Deerfield Facility, as amended in January 2019, including requirements that we (i) file an Annual Report on Form 10-K for the year ending December 31, 2019, with an audit opinion without a going concern qualification, (ii) maintain a minimum cash balance of $40.0 million through March 2020, and thereafter, a balance of $25.0 million, and (iii) achieve net revenue from product sales of at least $63.8 million for the year ending December 31, 2019. (See Note 4 to the consolidated financial statements for the accounting treatment of the Deerfield Facility.). In November 2018, the Company took actions to reduce its operating spend, including a reduction to the workforce of approximately 20.0% and a decision to begin to wind down its research and discovery function. To provide additional operating capital, in December 2018, the Company entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera Healthcare Partners LLC and Vatera Investment Partners LLC (together, “Vatera”) pursuant to which Vatera committed to provide $135.0 million over a period of five months, subject to the satisfaction of certain conditions (see Note 4). Upon the effectiveness and under the terms of the Loan Agreement, we provided a deemed issuance of these notes to Deerfield in the amount of $5.0 million. We drew $75.0 million under this facility in February 2019, and while the remaining $60,000 is available through early July 2019, subject to certain closing conditions, it is not certain that all of these conditions will be met.

As of March 31, 2019, we held cash and cash equivalents of $116.9 million to fund operations. We are focused on several initiatives to fund the future operations of the Company and reduce our risk of default under the Deerfield Facility with respect to minimum cash requirements. In addition to pursuing the additional $60.0 million available under the Vatera Facility

23

and a working capital revolver in place for up to $20.0 million, we are also exploring options to modify the terms of certain liabilities to increase our liquidity over the next 12 to 18 months. If our cash collections from revenue arrangements, including product sales, and other financing sources are not sufficient, we plan to control spending and would take further actions to adjust the spending level for operations if required. However, there is no guarantee that we will be successful in executing any or all of these initiatives.

As discussed in the Overview in Management's Discussion and Analysis, we believe there is substantial doubt about our ability to continue as a going concern. Should we be unable to adequately finance the Company, the Company’s business, result of operations, liquidity and financial condition would be materially and negatively affected, and we would be unable to continue as a going concern. Additionally, there can be no assurance that we will achieve sufficient revenue or profitable operations to continue as a going concern. The financial statements do not include any adjustments relating to the recoverability and classification of liabilities that might be necessary should we be unable to continue as a going concern.

As an early commercial-stage company, we have not yet demonstrated the ability to successfully commercialize and launch a product candidate or market and sell products, and our marketed products have very limited sales history, with Baxdela and Vabomere launching within the last 18 months, and Orbactiv and Minocin for injection launching in 2014 and 2015, respectively. As such, even if we obtain sufficient capital to support our operating plan, it is possible that we may fail to appropriately estimate the timing and amount of our funding requirements and we may need to seek additional funding sooner, and in larger amounts, than we currently anticipate.

The following table provides a summary of our cash position as of each of the period-end dates and the cash flows for each of the periods presented below (in thousands):  

	Three Months Ended March 31,
	2019			2018
	(In thousands)
Net cash provided by (used in):
Operating activities	$	(37,321	)	$	(51,419	)
Investing activities	(1,221		)	(166,887		)
Financing activities	73,635			181,398
Net change in cash and equivalents	$	35,093		$	(36,908	)

Operating Activities. Net cash used in operating activities for the three months ended March 31, 2019 and 2018, was $37.3 million and $51.4 million, respectively. In 2018, the primary use of cash was related to supporting our commercial activities, in addition to development and discovery research activities for our product candidates and support for our general and administrative functions. We used $14.1 million less in operations during 2019 due primarily to lower operating expenses, excluding non-cash and debt extinguishment expenses, of $14.8 million, due primarily to a reduction in R&D expenses because of the conclusion of our CAPB study and the wind-down of our early-stage research activities, which was substantially completed by March 31, 2019. The cash used in operations year-over-year was driven slightly higher by changes in working capital accounts totaling $0.7 million.

Investing Activities. Net cash used in investing activities for the three months ended March 31, 2019, of $1.2 million was related principally to a $1.2 million licensing payment related to one of our commercial products. Net cash used in investing activities for the three months ended March 31, 2018, related to the purchase of IDB and the purchases of equipment.

Financing Activities. Net cash provided by financing activities of $73.6 million for the three months ended March 31, 2019, consisted primarily of $73.7 million provided by the issuance of convertible notes (net of $1.3 million of debt issuance costs).

Net cash provided by financing activities of $181.4 million for the three months ended March 31, 2018, consisted primarily of:

• $190.0 million provided by the facility agreement;

• $40.0 million provided by additional equity funding;

• $6.5 million used for debt issuance costs; and

• $40.0 million used for payment of notes payable, as well as $2.2 million for debt extinguishment.

Funding Sources and Requirements

Our principal operating source of funds is product sales, although we also generate significant amounts of funds through licensing our products in markets outside the U.S. and thorough grants which reimburse a portion of our research and development activities.

24

In connection with the IDB Transaction in January 2018, we entered into the Deerfield Facility. The Deerfield Facility, as amended in January 2019, provides up to $240.0 million in debt and equity financing, with a term of six years. We have approximately $145 million principal outstanding under the Deerfield Facility as of March 31, 2019 (see Liquidity and Capital Resources above for further details.)

To provide additional operating capital, in December 2018, the Company entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera Healthcare Partners LLC and Vatera Investment Partners LLC (together, “Vatera”) pursuant to which Vatera committed to provide $135.0 million over a period of five months, subject to the satisfaction of certain conditions, but it is not certain that all of these conditions will be met (see Notes 1 and 4).

We expect to continue to incur significant losses into 2020, as we continue the development of, and seek regulatory approvals for, our product candidates, and commercialize our approved products. We are also subject to the risks associated with the development of new therapeutic products, and we may encounter unforeseen expenses, difficulties, complications, delays and other unknown factors that may adversely affect our business operations. Additionally, we expect to incur additional costs associated with operating as a public company and may need substantial additional funding in connection with our continuing operations, commercial and product development activities.

As discussed above, we expect our operating expenses to continue to increase for the foreseeable future and, as a result, we will need additional capital to support the working capital requirements of commercialized products and to fund further development of Melinta’s other product candidates.

We intend to use our cash and cash equivalents as follows:

• to fund the activities supporting the commercialization efforts for our marketed products;

• pursue additional indications and regional approvals, leveraging our robust product portfolio and minimum 10-year market exclusivity period in the United States, including Baxdela for the treatment of CABP and a reformulation for Orbactiv; and

• the remainder for working capital, selling, general and administrative expenses, and other general corporate purposes.

Until we can generate a sufficient amount of revenue from our products and licensing agreements, to finance our future cash needs, we are pursuing the $60.0 million of capital available under the Vatera Loan Agreement and a working capital revolver of up to $20.0 million, and we are also exploring options to modify the terms of certain liabilities to increase our liquidity over the next 12 to 18 months. If our cash collections from revenue arrangements, including product sales, and other financing sources are not sufficient, we plan to control spending and would take further actions to adjust the spending level for operations if required. However, there is no guarantee that we will be successful in executing any or all of these initiatives.

Contractual Obligations and Commitments

There have been no significant changes in our contractual obligations and commitments since the filing of and as disclosed in our 2018 Annual Report on Form 10-K.

Off-Balance Sheet Arrangements

We did not have during the periods presented, and we do not currently have, any off-balance sheet arrangements as defined under SEC rules.

Recent Accounting Pronouncements

See Note 2 to the Condensed Consolidated Financial Statements for discussion of recent accounting pronouncements.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

There have not been any material changes to our exposure to market risk during the quarter ended March 31, 2019. For additional information regarding market risk, refer to “Item 7A. Quantitative and Qualitative Disclosure About Market Risk” of our 2018 Annual Report on Form 10-K.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Disclosure controls and procedures (as defined in Rule 13a-15(e) promulgated under the Exchange Act) are designed only to provide reasonable assurance that information to be disclosed in our Exchange Act reports is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms. As of the end of the period covered by this report, management, including our Chief Executive Officer (our principal executive officer) and Chief Financial Officer (our principal financial officer), carried out an evaluation of the effectiveness of our disclosure controls and procedures pursuant to Exchange Act Rule 13a-15(b). Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer

25

have concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report to provide the reasonable assurance discussed above.

Changes in Internal Control over Financial Reporting

No change to our internal control over financial reporting occurred during the last fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

26

PART II—OTHER INFORMATION

Item 1A.  Risk Factors

There have been no material changes to the risk factors previously disclosed in our 2018 Annual Report on Form 10-K.

27

Item 6. Exhibits

Exhibit Number	Description of Document	Registrant’s Form	Filed	Exhibit Number	Filed Herewith
10.1	Separation and Release agreement with Erin Duffy, Ph.D. dated April 9, 2019.				X
10.2	Melinta Amended and Restated 2018 Stock Incentive Plan dated February 19, 2019. *				X
31.1	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
31.2	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.				X
32.1	Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.				X
32.2	Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.				X
101	Financials in XBRL format.				X

+	The exhibit contains a management contract, compensatory plan or arrangement which is required to be identified in this report.
*	The Company has requested confidential treatment with respect to portions of this exhibit. Those portions have been omitted and filed separately with the Securities and Exchange Commission pursuant to a confidential treatment request.

28

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	MELINTA THERAPEUTICS, INC.
Dated:	By:	/s/ John H. Johnson
May 10, 2019		John H. Johnson
		Interim Chief Executive Officer and Director
Dated:	By:	/s/ Peter J. Milligan
May 10, 2019		Peter J. Milligan
		Chief Financial Officer

29

EX-10.2

	
		
		
		Exhibit
	
	

EX-31.1

Exhibit 31.1

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, John H. Johnson, certify that:

(1) I have reviewed this quarterly report on Form 10-Q of Melinta Therapeutics, Inc.;

(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

(3) Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects, the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

(4) The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a – 15(f) and 15d – 15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in the report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

(5) The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: May 9, 2019

/s/ John H. Johnson

John H. Johnson

Chief Executive Officer and Director

(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Peter J. Milligan, certify that:

(1) I have reviewed this quarterly report on Form 10-Q of Melinta Therapeutics, Inc.;

(2) Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

(3) Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects, the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

(4) The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a – 15(f) and 15d – 15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles.

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in the report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

(5) The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Dated: May 9, 2019

/s/ Peter J. Milligan

Peter J. Milligan

Chief Financial Officer

(Principal Financial Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION OF THE CHIEF EXECUTIVE OFFICER

PURSUANT TO 18 U.S. C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report on Form 10-Q of Melinta Therapeutics, Inc. (the “Company”) for the period ended March 31, 2019, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, John H. Johnson, Chief Executive Officer and Director (Principal Executive Officer) of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 9, 2019

/s/ John H. Johnson

John H. Johnson

Chief Executive Officer and Director (Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION OF THE CHIEF FINANCIAL OFFICER

PURSUANT TO 18 U.S. C. SECTION 1350

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report on Form 10-Q of Melinta Therapeutics, Inc. (the “Company”) for the period ended March 31, 2019, as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Peter J. Milligan, Chief Financial Officer (Principal Financial Officer) of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to my knowledge:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated: May 9, 2019

/s/ Peter J. Milligan

Peter J. Milligan

Chief Financial Officer (Principal Financial Officer)

XML

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Apr. 26, 2019
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Trading Symbol	MLNT
Entity Registrant Name	MELINTA THERAPEUTICS, INC. /NEW/
Entity Central Index Key	0001461993
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Smaller Reporting Company	true
Emerging Growth Company	false
Entity Common Stock, Shares Outstanding (in shares)		11,779,897

XML

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and equivalents	$ 116,901	$ 81,808
Receivables (See Note 3)	14,892	22,485
Inventory	44,451	41,341
Prepaid expenses and other current assets	5,512	3,848
Total current assets	181,756	149,482
Property and equipment, net	1,465	1,586
Intangible assets, net	225,073	229,196
Other assets (See Note 3)	62,155	61,326
Total assets	470,449	441,590
Current liabilities
Accounts payable	8,321	16,765
Accrued expenses	22,625	33,924
Deferred purchase price and other liabilities (See Notes 3 and 4)	82,316	78,394
Accrued interest on notes payable	4,440	4,485
Warrant liability	23	38
Conversion liability (See Note 4)	12,236	0
Total current liabilities	129,961	133,606
Long-term liabilities
Notes payable, net of debt discount and costs (See Note 4)	91,397	110,476
Convertible notes payable to related parties, net of debt discount and costs (See note 4)	62,350	0
Other long-term liabilities	10,225	7,444
Total long-term liabilities	163,972	117,920
Total liabilities	293,933	251,526
Commitments and contingencies
Shareholders' Equity
Preferred stock; $.001 par value; 5,000,000 shares authorized; no shares issued or outstanding at March 31, 2019, and December 31, 2018, respectively	0	0
Common stock; $.001 par value; 80,000,000 shares authorized; 11,779,897 and 11,204,050 issued and outstanding at March 31, 2019, and December 31, 2018, respectively	12	11
Additional paid-in capital	924,821	909,896
Accumulated deficit	(748,317)	(719,843)
Total shareholders’ equity	176,516	190,064
Total liabilities and shareholders’ equity	$ 470,449	$ 441,590

XML

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value (usd per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	5,000,000	5,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	11,779,897	11,204,050
Common stock, shares outstanding (in shares)	11,779,897	11,204,050

XML

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue
Total revenue	$ 14,084	$ 14,841
Operating expenses:
Cost of goods sold	7,365	7,686
Research and development	5,364	16,129
Selling, general and administrative	25,941	34,624
Total operating expenses	38,670	58,439
Loss from operations	(24,586)	(43,598)
Other income (expense):
Interest income	187	210
Interest expense	(7,103)	(10,196)
Interest expense (related party, see Note 4)	(564)	0
Change in fair value of warrant & conversion liabilities	6,015	24,085
Loss on extinguishment of debt	(346)	(2,595)
Other income (expense)	(73)	4
Grant income (expense)	(62)	2,658
Other income (expense), net	(1,946)	14,166
Net loss	$ (26,532)	$ (29,432)
Basic and diluted net loss per share (in usd per share)	$ (2.34)	$ (4.76)
Basic and diluted weighted average shares outstanding (in shares)	11,330,019	6,183,540
Product sales, net
Revenue
Total revenue	$ 11,775	$ 11,846
Contract research
Revenue
Total revenue	1,409	2,995
License
Revenue
Total revenue	$ 900	$ 0

XML

Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2017		4,399,788
Beginning balance at Dec. 31, 2017	$ 72,336	$ 4	$ 644,991	$ (572,659)
Share-based compensation	955		955
Issuance of common shares (in shares)		40
Issuance of common shares	3		3
Vesting of restricted stock grants (n shares)		5,521
Issuance of common shares in connection with IDB Transaction (in shares)		1,865,301
Issuance of common shares in connection with IDB Transaction	145,963	$ 2	145,961
Net loss	(29,432)			(29,432)
Ending balance (in shares) at Mar. 31, 2018		6,270,650
Ending balance at Mar. 31, 2018	199,833	$ 6	791,910	(592,083)
Beginning balance (in shares) at Dec. 31, 2018		11,204,049
Beginning balance at Dec. 31, 2018	190,064	$ 11	909,896	(719,843)
Share-based compensation	909		909
Issuance of common shares (in shares)		1,705
Issuance of common shares	8		8
Vesting of restricted stock grants (n shares)		24,143
Issuance of common shares upon conversion of convertible notes (in shares)		550,000
Issuance of common shares upon conversion of convertible notes	2,767	$ 1	2,766
Discount on issuance of convertible notes (deemed shareholder contribution) (Note 4)	11,242		11,242
Net loss	(26,532)			(26,532)
Ending balance (in shares) at Mar. 31, 2019		11,779,897
Ending balance at Mar. 31, 2019	$ 176,516	$ 12	$ 924,821	$ (748,317)

XML

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities
Net loss	$ (26,532)	$ (29,432)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	4,474	4,805
Non-cash interest expense	3,230	5,954
Share-based compensation	892	955
Change in fair value of warrant & conversion liabilities	(6,015)	(24,085)
Loss on extinguishment of debt	346	2,595
Gain on extinguishment of lease liabilities	(792)	0
Changes in operating assets and liabilities
Receivables	7,593	(5,868)
Inventory	(3,093)	(2,002)
Prepaid expenses and other current assets	(1,551)	(1,293)
Accounts payable	(8,372)	3,983
Accrued expenses	(9,711)	(4,817)
Accrued interest on notes payable	(46)	(284)
Other non-current assets and liabilities	2,256	(1,930)
Net cash used in operating activities	(37,321)	(51,419)
Investing activities
IDB acquisition	0	(166,383)
Purchases of intangible assets	(1,209)	0
Purchases of property and equipment	(12)	(504)
Net cash used in investing activities	(1,221)	(166,887)
Financing activities
Proceeds from the issuance of notes payable	0	111,421
Proceeds from the issuance of convertible notes payable	75,000	0
Costs associated with the issuance of notes payable	(1,301)	(6,455)
Proceeds from the issuance of warrants	0	33,264
Proceeds from the issuance of royalty agreement	0	1,472
Purchase of notes payable disbursement option	0	(7,609)
Proceeds from issuance of common stock, net, to lender	0	51,452
Proceeds from issuance of common stock, net	8	40,000
Debt extinguishment	0	(2,150)
IDB acquisition deferred payments	(72)	0
Proceeds from the exercise of stock options, net of cancellations	0	3
Principal payments on notes payable	0	(40,000)
Net cash provided by financing activities	73,635	181,398
Net change in cash and equivalents	35,093	(36,908)
Cash, cash equivalents and restricted cash at beginning of the period	82,008	128,587
Cash, cash equivalents and restricted cash at end of the period	117,101	91,679
Supplemental cash flow information:
Cash paid for interest	4,486	4,480
Supplemental disclosure of non-cash financing and investing activities:
Accrued purchases of fixed assets	$ 12	$ 327

XML

Financial Statements

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Financial Instruments

FINANCIAL STATEMENTS

The accompanying condensed consolidated financial statements have been prepared assuming Melinta Therapeutics, Inc. (the “Company,” “we,” “us,” “our,” or “Melinta”) will continue as a going concern. We are not currently generating revenue from operations that is sufficient to cover our operating expenses and do not anticipate generating revenue sufficient to offset operating costs in the short-term. We have incurred losses from operations since our inception and had an accumulated deficit of $748,317 as of March 31, 2019, and we expect to incur substantial expenses and further losses in the short term for the development and commercialization of our product candidates and approved products. In addition, we have substantial commitments in connection with our acquisition of the infectious disease business of The Medicines Company ("Medicines") that we completed in January 2018, including payments related to deferred purchase price consideration, assumed contingent liabilities and the purchase of inventory. And, there are certain financial-related covenants under our Deerfield Facility, as amended in January 2019, including requirements that we (i) file an Annual Report on Form 10-K for the year ending December 31, 2019, with an audit opinion without a going concern qualification, (ii) maintain a minimum cash balance of $40,000 through March 2020, and thereafter, a balance of $25,000, and (iii) achieve net revenue from product sales of at least $63,750 for the year ending December 31, 2019. (See Note 4 to the consolidated financial statements for further details on the Deerfield Facility.)

Our future cash flows are dependent on key variables such as our ability to access additional capital under our Vatera and Deerfield credit facilities, our ability to secure a working capital revolver, which is allowed under the Deerfield Facility and required under the Vatera facility, and most importantly, the level of sales achievement of our four marketed products. Our current operating plans include assumptions about our projected levels of product sales growth in the next 12 months in relation to our planned operating expenses. Revenue projections are inherently uncertain but have a higher degree of uncertainty in an early-stage commercial launch, which we have in Baxdela and Vabomere, where there is not yet a robust sales history. While we have a plan to achieve the current expected sales levels of our products, we are unable to conclude based on applying the requirements of FASB Accounting Standards Codification ("ASC") 205-40, Presentation of Financial Statements - Going Concern (“ASC 205”) that such revenue is “probable” (as defined under this accounting standard). In addition, given our forecasted product sales are not deemed probable, our ability to draw the additional $50,000 of capacity under the Deerfield Facility, which is conditional based on meeting certain sales-based milestones before the end of 2019, is also not considered to be probable. And further, given the softness of our product sales to date, we believe that there is risk in meeting the minimum sales covenant for 2019 under the terms of the Deerfield Credit Facility. As such, we are not able to conclude under ASC 205 that the actions discussed below will be effectively implemented and, therefore, our current operating plans, existing cash and cash collections from existing revenue arrangements and product sales may not be sufficient to fund our operations for the next 12 months. As such, we believe there is substantial doubt about our ability to continue as a going concern. The financial statements do not include any adjustments relating to the recoverability and classification of liabilities that might be necessary should we be unable to continue as a going concern.

In the fourth quarter of 2018, the Company took actions to reduce its operating spend, including a reduction to the workforce of approximately 20% and a decision to begin to wind down its research and discovery function. To provide additional operating capital, in December 2018, the Company entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera Healthcare Partners LLC and Vatera Investment Partners LLC (together, “Vatera”) pursuant to which Vatera committed to provide $135,000 over a period of five months, subject to the satisfaction of certain conditions (see Note 4). We drew $75,000 under this facility in February 2019, and while the remaining $60,000 is available through early July 2019, subject to certain closing conditions, it is not certain that all of these conditions will be met. Among these conditions, before each draw, management must certify to Vatera that it does not foresee breaching any covenants under the Deerfield Credit Facility, and the Company must establish a working capital revolver of at least $10,000 in order to draw the final $35,000 tranche under the Loan Agreement in July 2019.

As of March 31, 2019, the Company had $116,901 in cash and cash equivalents. In addition to pursuing the additional $60,000 available under the Vatera Facility and a working capital revolver for up to $20,000, we are also exploring options to modify the terms of certain liabilities to increase our liquidity over the next 12 to 18 months. If our cash collections from revenue arrangements, including product sales, and other financing sources are not sufficient, we plan to control spending and would take further actions to adjust the spending level for operations if required. However, there is no guarantee that we will be successful in executing any or all of these initiatives.

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Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation and Basis of Presentation—The accompanying unaudited condensed consolidated financial statements include the accounts and results of operations of Melinta and its wholly-owned subsidiaries. The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).The information reflects all adjustments (consisting of only normal, recurring adjustments) necessary for a fair presentation of the information.All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates—The preparation of these unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Concentration of Credit Risk—Concentration of credit risk exists with respect to cash and cash equivalents and receivables. We maintain our cash andcash equivalents with federally insured financial institutions, and at times, the amounts may exceed the federally insured deposit limits. To date, we have not experienced any losses on our deposits of cash and cash equivalents. We believe that we are notexposed to significant credit risk due to the financial position of the depository institutions in which deposits are held.

A significant portion of our trade receivables is due from three large wholesaler customers for our products, which constitute 36%, 29% and 26%, respectively, of our trade receivable balance at March 31, 2019.

Fair Value of Financial Instruments—The carrying amounts of our financial instruments, which include cash and cash equivalents, trade and other receivables, accounts payable, accrued expenses, and notes payable approximated their fair values at March 31, 2019, and December 31, 2018.

Intangible Assets—Intangible assets consist of capitalized milestone payments for the licenses we use to make our products and the fair value of identifiable intangible assets acquired. Given the uncertainty of forecasts of future revenue for our products, we amortize the cost of intangible assets on a straight-line basis over the estimated economic life of each asset, generally the exclusivity period of each associated product. Amortization of intangible assets was $4,124 and $4,675 for the three months ended March 31, 2019 and 2018, respectively. Based on the intangible asset balances as of March 31, 2019, amortization expense is expected to be approximately $12,371 for the remaining nine months of 2019 and $16,495 in each of the years 2020 through 2023.

Revenue Recognition—We recognize revenue from sales of our commercial products and under our licensing arrangements in accordance with Accounting Standards Codification 606, Revenue from Contracts with Customers ("ASC 606").

Product Sales

We recognize revenue from product sales upon the transfer of control, which depends on the delivery terms set forth in customer contracts and is generally upon delivery. Payment terms between Melinta and our customers vary by customer, but are generally between 30 and 60 days from the invoice date.

Management exercises judgment in estimating variable consideration. Provisions for prompt-pay discounts, chargebacks, rebates, wholesalers fees-for-services, group purchasing organization administration fees, voluntary patient assist programs, returns and other adjustments are recorded in the period the related sales are recognized. We provide discounts to certain hospitals and private entities, and we provide rebates to government agencies, group purchasing organizations and other private entities.

Chargebacks, rebates administration fees and discounts offered under our patient assistance programs are generally based upon the contractual discounts or the volume of purchases for our products. In the case of discounted pricing, we typically provide a credit to our wholesale customers (i.e., chargeback), representing the difference between the customer’s acquisition list price and the discounted price offered to certain hospitals. For the other certain discounts, we pay rebates based on the program that is ultimately utilized by the hospital or, in the retail setting, the patient under our patient assistance program. Factors used in these calculations include the identification of which products have been sold subject to a discount, rebate or administration fee, which customer, government agency, or group purchasing organization price terms apply, and the estimated lag time between the sale of the product and when the discount, rebate or administration fee is reported to us. Using historical trends, adjusted for current changes, we estimate the amount of these discounts, rebates and administration fees that will be paid, and record them as a reduction to gross sales when we recognize revenue for the sale of our products. Settlement of discounts, rebates and administration fees generally occurs from between one and six months after the initial sale to the wholesaler. We regularly analyze historical trends and make adjustments to reserves for changes in trends and terms of rebate programs. Historically, adjustments to prior periods' rebate accruals have not been material to net product sales.

For product returns, generally, our customers have the right to return any unopened product during the 18-month period beginning six months prior to the labeled expiration date and ending 12 months after the labeled expiration date. Where historical rates of return exist, we use history as a basis to establish a returns reserve for product shipped to wholesalers. For our newly launched products, for which we currently do not have history of product returns, we estimate returns based on third-party industry data for comparable products in the market. As we distribute our products and establish historical sales over a longer period of time (i.e., two years), we will be able to place more reliance on historical purchasing and return patterns of our customers when evaluating our reserves for product return. At the end of each reporting period for any of our products, we may decide to constrain revenue for product returns based on information from various sources, including channel inventory levels and dating and sell-through data, the expiration dates of product currently being shipped, price changes of competitive products and introductions of generic products.

Adjustments to gross sales related to prompt-pay discounts and fees-for-services require less judgment as they are based on contractual percentages and the amounts invoiced to the wholesalers.

At the end of each reporting period, we adjust our product sales allowances when we believe actual experience may differ from current estimates. The following table provides a summary of activity with respect to our sales allowances and accruals during the first three months of 2019: 

	Cash Discounts			Product Returns			Chargebacks			Fees-for- Service			MelintAssist			Government Rebates			Commercial Rebates			Admin Fees
Balance as of January 1, 2019	$	245		$	2,970		$	762		$	818		$	412		$	693		$	599		$	138
Allowances for sales	292			398			1,127			793			264			215			306			142
Payments & credits issued	(392		)	(206		)	(1,299		)	(686		)	(278		)	(73		)	(330		)	(127		)
Balance as of March 31, 2019	$	145		$	3,162		$	590		$	925		$	398		$	835		$	575		$	153

The allowances for cash discounts and chargebacks are recorded as contra-assets in trade receivables; the other balances are recorded in other accrued expenses.

Licensing Arrangements

We enter into license and collaboration agreements for the research and development and/or commercialization of therapeutic products. The terms of these agreements may include nonrefundable licensing fees, funding for research and development and manufacturing, milestone payments and royalties on any product sales derived from the collaborations in exchange for the delivery of licenses and rights to sell our products within specified territories outside the United States.

In the determination of whether our license and collaboration agreements are accounted for under ASC 606 or ASC 808, Contract Accounting, we first assess whether or not the partner in the arrangement is a customer. If the partner in the arrangement is deemed a customer as it relates to some or all of our performance obligations, then the consideration associated with those performance obligations is accounted for as revenue under ASC 606.

Our license agreements may include contingent or variable consideration based upon the achievement of regulatory- and sales-based milestones and future royalties based on a percentage of the partner’s net product sales. Performance obligations to deliver distinct licenses are recognized at a point in time. Milestone payments from licensees that are contingent and/or variable upon future regulatory events and product sales are not considered probable of being achieved until the milestones are earned and, therefore, the contingent revenue is subject to significant risk of reversal. As such, we constrain this variable consideration and do not include it in the transaction price (or recognize the revenue related to these milestones) until such time that the contingencies are resolved and generally recognized at a point in time. In addition, under the sales- or usage- based royalty exception in ASC 606, we do not estimate, at the onset of the arrangement, the variable consideration from future royalties or sales-based milestones. Instead, we wait to recognize royalty revenue until the future sales occur.

As of March 31, 2019, we do not have any contract assets or liabilities and our contracts do not have any significant financing components. And, we have not capitalized contract origination costs.  

Comprehensive Loss—Comprehensive loss is equal to net loss as presented in the accompanying statements of operations.

Advertising Expense—We record advertising expenses when they are incurred. We recognized $176 and $410, respectively, of advertising expense in the three months ended March 31, 2019 and 2018, respectively. 

Leases—On January 1, 2019, we adopted Topic 842, Leases ("Topic 842") which requires lessees to recognize assets and liabilities for most leases at the lease inception. All of the Company's leases are operating leases, which are included in other long-term assets as operating right of use ("ROU") assets and other liabilities as operating lease liabilities in our consolidated balance sheets.

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As our leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. We will use the implicit rate when readily determinable. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Our has lease agreements with lease and non-lease components, which are accounted for separately.

Segment and Geographic Information—Operating segments are defined as components of an enterprise engaging in business activities for which discrete financial information is available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and in assessing performance. We operate and manage our business as one operating segment. Although substantially all of our license and contract research revenue is generated from agreements with companies that are domiciled outside of the U.S., we do not operate outside of the U.S., nor do we have any significant assets in any foreign country. See this Note 2 for further discussion of the license and contract research revenue.

Recently Issued and Adopted Accounting Pronouncements:

We adopted Topic 842 codified as ASC 842 on January 1, 2019 ("Effective Date"). ASC 842 requires lessees to recognize assets and liabilities on the balance sheet for most leases but recognize expense on the income statement in a manner similar to previous accounting. The standard requires a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements or an optional transition method, whereby an entity can elect to apply the standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative prior periods. We adopted this guidance on the Effective Date, electing the optional transition method. Consequently, we did not recast the comparative periods presented in this Quarterly Report on Form 10-Q. In addition, as permitted under ASC 842, we elected several practical expedients and therefore did not reassess at the Effective Date (1) whether any existing contract is or contains a lease, (2) the classification of existing leases, (3) whether previously capitalized costs continue to qualify as initial indirect costs. We also elected not to record on the balance sheet a lease whose term is 12 months or less and does not include a purchase option that the lessee is reasonably certain to exercise. We did not elect the practical expedient to not separate lease and non-lease components.

Upon adoption of ASC 842 on the Effective Date, we recorded ROU assets of $4,768, net of historical deferred rent liabilities and aggregate charges of $1,942 to retained earnings in connection with ROU asset impairments on the Effective Date. In addition, we recorded lease liabilities of $7,411 related to facility and vehicle leases. See Note 6 for further details. The transition to ASC 842, did not result in a cumulative-effect adjustment to the opening balance of retained earnings.

Recently Issued Accounting Pronouncements Not Yet Adopted

In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies or removes certain disclosure requirements in Topic 820, Fair Value Measurements. The update is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. We are currently evaluating the impact of the adoption of this ASU on our financial statements.

In August 2018, the FASB issued ASU 2018-15, Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which provides guidance on implementation costs incurred in a cloud computing arrangement that is a service contract. The ASU amends Topic 350, Intangibles—Goodwill and Other, to include these implementation costs in its scope and clarifies that a customer should apply ASC 350-40 to determine which implementation costs should be capitalized. The update is effective for public entities for fiscal years beginning after December 15, 2019. we are currently evaluating the impact the adoption of this ASU will have on our financial statements.

In November 2018, the FASB issued ASU 2018-18, Clarifying the Interaction between Topic 808 and Topic 606, which amends ASC 808 to clarify when transactions between participants in a collaborative arrangement under ASC 808 are within the scope of ASC 606, Revenue from Contracts with Customers. The ASU provides clarity in both ASC 606 and 808 regarding when transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606. The update is effective for public entities for fiscal years beginning after December 15, 2019. we are currently evaluating the impact the adoption of this ASU will have on our financial statements.

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Balance Sheet Components

3 Months Ended

Mar. 31, 2019

Balance Sheet Related Disclosures [Abstract]

Balance Sheet Components

BALANCE SHEET COMPONENTS

Cash, Cash Equivalents and Restricted Cash—Cash, cash equivalents and restricted cash, as presented on the Condensed Consolidated Statements of Cash Flows, consisted of the following: 

	March 31, 2019		December 31, 2018
Cash and cash equivalents	$	116,901	$	81,808
Restricted cash (included in Other Assets)	200		200
Total cash, cash equivalents and restricted cash shown in the Condensed    Consolidated Statements of Cash Flows	$	117,101	$	82,008

Accounts Receivable—Accounts receivable consisted of the following:

	March 31, 2019		December 31, 2018
Trade receivables	$	7,460	$	11,509
Contracted services	6,958		10,293
Other receivables	474		683
Total receivables	$	14,892	$	22,485

Inventory—Inventory consisted of the following: 

	March 31, 2019			December 31, 2018
Raw materials	$	28,841		$	24,507
Work in process	9,977			11,700
Finished goods	11,685			12,204
Gross value of inventory	50,503			48,411
Less: valuation reserves	(6,052		)	(7,070		)
Total inventory	$	44,451		$	41,341

Other Assets—Other assets consisted of the following: 

	March 31, 2019		December 31, 2018
Deerfield disbursement option (see Note 4)	$	7,609	$	7,608
Long-term inventory deposits	48,044		51,127
Other assets	1,400		2,391
Right-of-use assets	4,902		—
Restricted cash	200		200
Total other assets	$	62,155	$	61,326

Long-term inventory deposits consist of advances made to contract manufacturers for production of drug products, principally API for Vabomere. These Vabomere advances were related to contractual commitments assumed under long-term contract manufacturing agreements in connection with a previously acquired entity. As deliveries are made, we transfer appropriate amounts from inventory deposits to inventory.

Accrued Expenses—Accrued expenses consisted of the following: 

	March 31, 2019		December 31, 2018
Accrued contracted services	$	1,318	$	2,909
Payroll related expenses	10,026		15,585
Professional fees	173		3,598
Accrued royalty payments	2,885		2,052
Accrued sales allowances	6,047		5,630
Accrued other	2,176		4,150
Total accrued expenses	$	22,625	$	33,924

Accrued contracted services are primarily comprised of amounts owed to third-party clinical research organizations for research and development work and contract manufacturers for research and commercial drug product manufacturing performed on behalf of Melinta, and amounts owed to third-party marketing organizations for work performed to support the commercialization and sale of our products.

Accrued payroll related expenses are primarily comprised of accrued employee termination benefits, bonus and vacation.

Deferred Purchase Price and Other Liabilities—Other liabilities consisted of the following:

	March 31, 2019		December 31, 2018
Deferred purchase price	$	49,758	$	48,394
Milestone liability	30,000		30,000
Lease liabilities, current	2,558		—
Total deferred purchase price and other liabilities	$	82,316	$	78,394

Other Long-Term Liabilities—Other liabilities consisted of the following:

	March 31, 2019		December 31, 2018
Lease liabilities, net of current	$	4,086	$	—
Long-term accrual royalties	1,215		2,230
Long-term deferred purchase price	4,853		4,708
Other long-term liabilities	71		506
Total other long-term liabilities	$	10,225	$	7,444

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Financing Arrangements

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Financing Arrangements

FINANCING ARRANGEMENTS

2017 Loan Agreement

On May 2, 2017, we entered into a Loan and Security Agreement with a new lender (the “2017 Loan Agreement”). Under the 2017 Loan Agreement, the lender made available to us up to $80,000 in debt financing and up to $10,000 in equity financing.

In January 2018, we retired the 2017 Loan Agreement with the execution of the Facility Agreement (discussed below), in connection with which we recognized a debt extinguishment loss of $2,595 comprised of prepayment penalties and exit fees totaling $2,150 and unamortized debt issuance costs of $445.

Facility Agreement

On January 5, 2018 (the “Agreement Date”), we entered into the Facility Agreement (the “Facility Agreement”) with affiliates of Deerfield Management Company, L.P. (collectively, “Deerfield”). Pursuant to the terms of the Facility Agreement, (i) we issued 625,569 shares of our common stock to Deerfield at a price of $67.50 on January 5, 2018, for total proceeds of $42,226, pursuant to a Securities Purchase Agreement, and (ii) Deerfield loaned us $147,774 as an initial disbursement (the “Term Loan”), for total proceeds of $190,000. We used the proceeds from the Facility Agreement to retire the 2017 Loan Agreement (discussed above) and to fund the Infectious Disease Business acquisition on the Agreement Date.

Under the terms of the Facility Agreement, we have the right to draw from Deerfield additional disbursements up to $50,000 (the “Disbursement Option”), which may be made available upon the satisfaction of certain conditions, such as our having achieved annualized net sales of at least $75,000 during the applicable period. The Term Loan bears interest at a rate of 11.75%, while funds distributed pursuant to the Disbursement Option will bear interest at a rate of 14.75%.

On January 14, 2019, in conjunction with the Vatera Loan Agreement (discussed below),we entered into an amendment to the Facility Agreement (the “Deerfield Facility Amendment”). The Deerfield Facility Amendment was a condition (among other conditions) to the funding of the Vatera Loan Agreement, and became effective upon the funding of the initial $75,000 disbursement under the Vatera Loan Agreement in February 2019.

The Deerfield Facility Amendment (i) modified the definition of “change of control” under the Deerfield Facility to permit Vatera and their respective affiliates to own 50% or more of the equity interests in Melinta on a fully diluted basis; (ii) modified the definition of “Indebtedness” under the Deerfield Facility to exclude certain specific payments under (a) the Agreement and Plan of Merger, dated as of December 3, 2013, among the Medicines Company, Rempex Pharmaceuticals, Inc. and the other parties thereto and (b) the Purchase and Sale Agreement, dated as of November 28, 2017, between The Medicines Company and Melinta Therapeutics, Inc.; (iii) modified the definition of “Permitted Indebtedness” under the Deerfield Facility to permit the payment of a certain amount of the interest on the Vatera Loan Agreement (described below) in cash; (iv) eliminated the requirement that the Company’s audited financial statements for the fiscal year ending December 31, 2018, be delivered without an explanatory paragraph expressing doubt as to the Company’s status as a going concern; (v) reduced the net sales covenant set forth in the Facility Agreement for all periods after December 31, 2018, by 15% (we must now achieve net product sales of at least $63,750 during 2019 and at least $85,000 during 2020); (vi) requires the Company to hold a minimum cash balance of $40,000 through March 31, 2020, and thereafter $25,000; (vii) increased the exit fee under the Deerfield Facility from 2% to 4%; and (viii) made certain other technical modifications, including to accommodate the Vatera Loan Agreement. 

The Deerfield Facility Amendment also provided for the conversion of up to $74,000 in principal ("Convertible Notional Amount") amount of the Term Loan into shares of the Company’s common stock at Deerfield’s option at any time and evidenced by a convertible note (the “Deerfield Convertible Note”), subject to the 4.985% Ownership Cap as described below. The conversion price for this option is the greater of (i) $5.15, which is the minimum initial conversion price, subject to adjustment for stock splits (including a reverse split), stock combinations or similar transactions, and (ii) 95.0% of the lesser of (A) the closing price of the Company’s common stock on the trading day immediately preceding the conversion date and (B) the arithmetic average of the volume weighted average price of the Company’s common stock on each of the three trading days immediately preceding the conversion date. Deerfield's conversion rights are subject to a 4.985% beneficial ownership cap based on the total number of shares of the Company’s common stock outstanding. However, this will not prevent Deerfield from periodically converting up to the 4.985% ownership cap and then selling the shares such that up to $74,000 of the loan is converted over time.

The Deerfield Facility Amendment also provided for $5,000 of convertible loans that were deemed funded by Deerfield upon the initial funding under the Vatera Loan Agreement, with terms identical to the Vatera Loan Agreement (the "Deerfield Portion" of the Loan Agreement (see Vatera Loan Agreement discussion below).

In addition, the Company is required to reserve and keep available a sufficient number of shares of common stock for the purpose of enabling the Company to issue all of the underlying shares of common stock issuable pursuant to the Deerfield's conversion rights under the Facility Agreement, as amended, and under the Loan Agreement.

We concluded that the amendment represented a debt modification and not a new debt arrangement that extinguished the former arrangement. As such, the fair value of any new instruments or features and any fees paid to Deerfield in connection with the amendment are added to the discount balance of the Term Loan immediately prior to the amendment and amortized to interest expense over the remaining term.

Based on an analysis of the provisions and features contained in the Deerfield Facility Amendment, we concluded that arrangement contained a share-settled redemption feature that is required to be bifurcated and recorded at fair value (the "Conversion Right") as a derivative liability. Therefore, the Company performed a valuation, in accordance with ASC 820, Fair Value Measurements ("ASC 820"), to determine the fair value of the Conversion Right, which will reduce the carrying amount of the Term Loan and the value of which, will be amortized over the remaining term of the Term Loan utilizing the effective interest method. The terms of these instruments and the methodology and assumptions used to value each of them are discussed below.

Conversion Right

The initial fair value of the Conversion Right was determined to be $18,962 using a "with and with-out" discounted cash flow ("DCF") model. The with and with-out DCF model compares the fair value of the amended Term Loan with the Conversion Right, which assumes the full Convertible Notional Amount is converted based on market conditions and other factors at the amendment date, with the fair value of the Term Loan assuming no Conversion Right, which is based on a DCF analysis of the contractual terms of the Convertible Notional Amount.

The significant assumptions used in the with and with-out DCF model used to estimate the fair value of the Convertible Notional Amount were: the price of our common stock on the amendment date, an expected volatility of 80%, and an estimated yield of 20.6%. Due to the inherent uncertainty of determining the fair value of the Convertible Notional Amount using Level 3 inputs, the fair value may differ significantly from the values that would have been used had a ready market or observable inputs existed. The fair value of the Conversion Right liability was $12,236 as of March 31, 2019. The decrease during the three months ended March 31, 2019 was $6,726, of which $6,000 was included in other income as a fair value gain and $726 was included as an offset to loss on extinguishment of debt (because of the conversion discussed below) on the consolidated statements of operations. We will remeasure this Conversion Right liability at fair value at each quarterly reporting period.

During the three months ended March 31, 2019, Deerfield converted principal of $2,833 under the Term Loan at a rate of $5.15 per share, resulting in the issuance of 550,000 shares of common stock. We recognized a loss on extinguishment of debt of $346, related primarily to the write off of unamortized debt issuance costs associated with the converted principal amount, partially offset by the gain discussed in the previous paragraph.

Term Loan

The Deerfield Facility Amendment increased the exit fee from 2.0% to 4.0%. Therefore, total required future cash payments are $153,685 (Term Loan principal of $147,774 plus exit fee of $5,911). The exit fee cost is being accreted as additional interest expense over the life of the loan. After adjusting for the Conversion Right, the effective interest rate is 30.0%. The total cost of all items (cash-based interest payments, upfront fees and costs, and the 4% exit fee) is being expensed as interest expense using the effective interest rate of 30.0%. During the three months ended March 31, 2019 and 2018, we recorded cash interest expense of $4,229 and $4,196, respectively, and term loan accretion expense of $1,962 and $1,124, respectively. All amounts were recorded as interest expense in our statement of operations.

The $2,833 of principal converted to common shares during the three months ended March 31, 2019, was carried on the books at the discounted value of $1,694 on the day of conversion. After deducting the $2,833 of principal converted to common shares (and the avoidance of paying the 4.0% exit fee on the amount converted), the new remaining amount of required future cash payments was reduced to $150,739 (remaining term loan principal of $144,941 plus exit fee of $5,798).

Under the Facility Agreement, as amended, the accretion of the principal of the term loan, conversion redemptions, and the future payments, including the 4.0% exit fee due at the end of the term, but excluding the 11.75% rate applied to the $147,774 note per the form of the Facility Agreement, are as follows: 

	Beginning Balance		Record Conversion Right and Issuance Costs					Accretion Expense(2)		Principal Payments and Exit Fee(2)			Conversion			Ending Balance
January 5 - December 31, 2018	$	104,966						$	5,510	—			$	—		$	110,476
January 1 - March 31, 2019	110,476		(23,621		)	(1	)	1,962		—			(1,694		)	87,123
April 1 - December 31, 2019	87,123							7,734		—			—			94,857
Year Ending December 31, 2020	94,857							13,284		—			—			108,141
Year Ending December 31, 2021	108,141							18,044		—			—			126,185
Year Ending December 31, 2022	126,185							17,459		(69,089		)	—			74,555
Year Ending December 31, 2023	74,555							7,079		(75,370		)	—			6,264
Year Ending December 31, 2024	6,264							16		(6,280		)	—			—
Total			$	(23,621	)			$	71,088	$	(150,739	)	$	(1,694	)

(1.) Consists of $18,962, representing the day-one fair value of the conversion right, and $4,659, which is comprised of (a) additional issuance costs of $408, and (b) the initial fair value of the Deerfield Portion of the Vatera Loan Agreement of $4,251; as we did not receive cash from Deerfield but, rather, issued the Deerfield Portion in consideration for amending the Credit Facility, the $4,251 is treated as debt issuance costs. The total of $23,621 will be accreted over the remaining life of the loan.

(2.) Accretion expense, principal payments and the exit fee will be reduced each time Deerfield exercises their conversion right.

As of March 31, 2019, as reflected in the table above, the carrying value of the Credit Facility was $87,123; this amount, combined with $4,274, the carrying value of the amount payable for the Deerfield Portion of the Vatera Loan Agreement, including interest and accretion expense, equals the amount of the notes payable to Deerfield on our consolidated balance sheet of $91,397.

Vatera Loan Agreement

On December 31, 2018, we entered into a Senior Subordinated Convertible Loan Agreement (the “Loan Agreement”) with Vatera, a related party, for $135,000 ("Vatera Portion"), and on January 14, 2019, we amended the Loan Agreement pursuant to which, among other things, Deerfield was deemed to have funded an additional $5,000 ("Deerfield Portion") of senior subordinated convertible loans (the "Convertible Loans") under the Vatera Loan Agreement as consideration for entering into the Deerfield Facility Amendment. No amount was drawn under the Loan Agreement as of December 31, 2018, as its effectiveness was contingent upon the satisfaction of several conditions, including the execution of the Deerfield Facility Amendment.

The proceeds of the Convertible Loans will be used for working capital and other general corporate purposes. The Convertible Loans are senior unsecured obligations of the Company and are contractually subordinated to the obligations under the Deerfield Facility. Interest on the Convertible Loans is 5% per year and will be paid in arrears at the end of each fiscal quarter, with 50% of such interest paid in cash and the remaining 50% of such interest paid in kind by increasing the principal balance of the outstanding Convertible Loans in an amount equal thereto (which increase will bear interest once added to such principal balance). The maturity date of the Convertible Loans is January 6, 2025.

The Convertible Loans are convertible at Vatera's option into shares of convertible preferred stock of the Company at a conversion rate of 1.25 shares of preferred Stock per one thousand dollars. The preferred stock is further convertible at Vatera's option into shares of common stock of the Company at a rate of 100 shares of common stock per one share of preferred stock (the “Common Stock Conversion Rate”). At Vatera's option, the Convertible Loans are also directly convertible into common stock at an initial conversion rate equal to the Loan Conversion Rate multiplied by the Common Stock Conversion Rate. The conversion rate for common stock is $8.00 per share. The preferred stock is non-participating, convertible preferred stock, with no preferred dividend rights or voting rights. However, the preferred stock may participate in common stock dividends on the Company’s common stock on an as-converted basis and is senior to the common stock upon liquidation, with a liquidation preference equal to the Conversion Amount for the converted loans, as it may thereafter be adjusted pursuant to the Certificate of Designations (plus, if applicable, the amount of any declared but unpaid dividends on such shares of preferred stock).

An exit fee (the “Interim Exit Fee”) of 1% of the aggregate amount of Convertible Loans funded under the Loan Facility is payable upon repayment or conversion of such funded amount (payable in preferred stock in the case of conversion). In addition, an exit fee (the “Final Exit Fee” and, together with the Interim Exit Fee, the “Exit Fee”) of 3% on the portion of the aggregate committed amount of Convertible Loans not drawn by the Company under the Loan Facility is payable on any repayment in full or conversion in full of the Convertible Loans (payable in preferred stock in the case of conversion).

Subject to the satisfaction (or waiver) of the conditions precedent set forth in the Loan Agreement, as amended, $75,000 of Convertible Loans may be drawn in a single draw on or prior to February 25, 2019, up to $25,000 of additional Convertible Loans may be drawn in a single draw after March 31, 2019, but on or prior to June 30, 2019, and up to $35,000 of additional Convertible Loans may be drawn in a single draw after June 30, 2019, but on or prior to July 10, 2019.

Among the conditions precedent, the Loan Agreement required the approval of the shareholders of Melinta to ensure the number of authorized shares of common stock was sufficient to accommodate the potential conversion of the Convertible Loans and approval of the issuance of the Convertible Loans, in accordance with Nasdaq rules. On February 19, 2019, at a Special Meeting of the shareholders, the shareholders approved both a reverse stock split and an increase of the authorized shares, as well as the issuance of the Convertible Notes. In addition, before each draw, management must certify to Vatera that it does not foresee breaching any covenants under the Deerfield Credit Facility, and the Company must establish a working capital revolver of at least $10,000 in order to draw the final $35,000 tranche under the Loan Agreement in July 2019. Melinta drew the first tranche ("Initial Draw") of $75,000 on February 22, 2019 ("Initial Draw Date"), at which time we deemed issuance of the $5,000 Deerfield Portion, for a total of $80,000 outstanding.

Based on an analysis of the provisions and features contained in the Loan Agreement, including the embedded conversion option, we recognized the Convertible Loans as a liability in its entirety. Since Vatera is a related party as Melinta's largest shareholder, and the Convertible Notes contained below-market terms, we determined that the par value did not represent the fair value of the Convertible Notes. Therefore, the Company performed a valuation, in accordance with ASC 820, to determine the appropriate discount to apply to the principal amount of the Convertible Notes, which was deemed a capital contribution from a related party.

    We used a convertible bond lattice model to estimate the fair value of the Convertible Notes (Level 3 inputs), which resulted in an estimated fair value of the Vatera Portion of $63,758 on the Initial Draw Date. The related discount and capital contribution of $11,242 ("Valuation Discount") was recorded as a reduction in the carrying amount of the Convertible Notes with an offsetting amount recorded to additional paid-in-capital. The estimated fair value of the Deerfield Portion of the Convertible Loans, for which Melinta did not receive cash but was, rather, consideration for amending the Deerfield Credit Facility, was $4,251, which was recorded as additional debt issuance costs on the Deerfield Term Loan. The discount of $749 was recorded as a discount to the Deerfield Portion of the Convertible Loans. We concluded that there was no beneficial conversion feature present given the conversion price is not "in the money" and that we are not required to revalue the Convertible Notes at the end of each reporting period.

The significant assumptions used in the convertible bond lattice model used to estimate the fair value of the Convertible Notes were: the price of our common stock on the Initial Draw Date, an expected volatility of 76%, and an estimated yield of 29.8%. Due to the inherent uncertainty of determining the fair value of the Convertible Notes using Level 3 inputs, the fair value may differ significantly from the values that would have been used had a ready market or observable inputs existed.

In connection with the Initial Draw, the Company incurred debt issue costs of $1,775, which is being amortized as additional interest expense over the term of the Convertible Loans. In addition, we will accrete the Interim Exit Fee as additional interest expense over the term of the Convertible Loans, which will ultimately total $928. The total cost of all items (cash and PIK interest expense as well as amortization/accretion of the debt issuance costs, the Interim Exit Fee, and the Valuation Discount) is being recognized as interest expense using an effective interest rate of approximately 8.6%.

The following table summarizes the fair value of the Convertible Notes on the Initial Draw Date:

Principal amount of Convertible Loans	$	80,000
Discount and related capital contribution associated with below market terms of Convertible Loans	(11,242		)
Discount on Deerfield portion of Convertible Loans	(749		)
Debt issue costs	(1,775		)
Carrying value at the Initial Draw Date	$	66,234

Of the $66,234, $4,251 was the initial carrying value of the Deerfield Portion, and $61,983 (net of $1,775 of debt issuance costs) was the initial carrying value of the Vatera Portion.

The accretion of the principal of the Loan Agreement, paid-in kind interest, and the future payments, including the exit fees due at the end of the term, for the $80,000 outstanding under the arrangement (including the $5,000 "Deerfield Portion"), are as follows: 

	Beginning Balance		Paid-in Kind Interest		Accretion  Expense		Principal Payments and Exit Fee			Ending Balance
February 25 - March 31, 2019	$	66,234	$	211	$	179	$	—		$	66,624
April 1 - December 31, 2019	66,624		1,542		1,370		—			69,536
Year Ending December 31, 2020	69,536		2,098		2,037		—			73,671
Year Ending December 31, 2021	73,671		2,146		2,296		—			78,113
Year Ending December 31, 2022	78,113		2,200		2,586		—			82,899
Year Ending December 31, 2023	82,899		2,257		2,905		—			88,061
Year Ending December 31, 2024	88,061		2,321		3,264		—			93,646
Year Ending December 31, 2025	93,646		38		57		(93,741		)	—
Total			$	12,813	$	14,694	$	(93,741	)

Of the $66,624 carrying value of the Convertible Notes as of March 31, 2019, as reflected in the table above, $62,350 related to the Vatera Portion and $4,274 related to the Deerfield Portion.

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Fair Value Measurements

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value Measurements

FAIR VALUE MEASUREMENTS

The following table lists our assets and liabilities that are measured at fair value and the level of the lowest significant inputs used to measure their fair value at March 31, 2019, and December 31, 2018. The money market fund is included in cash & cash equivalents on the balance sheet; the other items are in the captioned line of the balance sheet. 

	As of March 31, 2019
	Level 1		Level 2		Level 3			Total
Assets:
Money market fund	$	33,068	$	—	$	—		$	33,068
Total assets at fair value	$	33,068	$	—	$	—		$	33,068
Liabilities:
Royalty liability in deferred purchase price	$	—	$	—	$	(1,102	)	$	(1,102	)
Royalty liability in contingent consideration	—		—		(4,854		)	(4,854		)
Warrant liability	—		—		(23		)	(23		)
Conversion liability (see Note 4)	—		—		(12,236		)	(12,236		)
Total liabilities at fair value	$	—	$	—	$	(18,215	)	$	(18,215	)

	As of December 31, 2018
	Level 1		Level 2		Level 3			Total
Assets:
Money market fund	$	32,883	$	—	$	—		$	32,883
Total assets at fair value	$	32,883	$	—	$	—		$	32,883
Liabilities:
Current royalty contingent consideration from IDB acquisition	$	—	$	—	$	(1,006	)	$	(1,006	)
Long-term royalty contingent consideration from IDB acquisition	—		—		(4,708		)	(4,708		)
Warrant liability	—		—		(38		)	(38		)
Total liabilities at fair value	$	—	$	—	$	(5,752	)	$	(5,752	)

The common stock warrants were valued using a Black-Scholes option-pricing model (Level 3 inputs). The significant inputs include the risk-free interest rate, remaining contractual term, and expected volatility. Significant increases or decreases in any of these inputs in isolation would result in a significantly different fair value measurement. An increase in the risk-free interest rate, and/or an increase in the remaining contractual term or expected volatility, would result in an increase in the fair value of the warrants.

The following table summarizes the changes in fair value of our Level 3 assets and liabilities for the three months ended March 31, 2019 (there were no transfers into or out of Level 3 assets or liabilities during the period): 

Level 3 Liabilities	Fair Value at December 31, 2018			Accretion Recorded in Interest Expense			Change in Unrealized Gains (Losses)		(Issuances) Settlements, Net			Net Transfer Between Liabilities			Fair Value at March 31, 2019
Current royalty contingent consideration from IDB acquisition	$	(1,006	)	$	(176	)	$	—	$	382		$	(302	)	$	(1,102	)
Long-term royalty contingent consideration from IDB acquisition	(4,708		)	(448		)	—		—			302			(4,854		)
Warrant liability	(38		)	—			15		—			—			(23		)
Conversion liability (see Note 4)	—			—			6,000		(18,236		)	—			(12,236		)
Total liabilities at fair value	$	(5,752	)	$	(624	)	$	6,015	$	(17,854	)	$	—		$	(18,215	)

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Leases

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Leases

LEASES

As of March 31, 2019, we were a lessee under three operating lease agreements for office facilities and an operating lease for vehicles for our field-based employees, principally sales representatives.

As more fully described in Note 2, we adopted ASC 842 on January 1, 2019 ("Effective Date"), which requires lessees to recognize assets and liabilities on the balance sheet for most leases recognize expense on the income statement in a manner similar to previous accounting. We elected the optional transition method, whereby an entity can elect to apply the standard at the Effective Date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative prior periods. Consequently, the prior comparative period’s financials will remain the same as those previously presented. In addition, the transition to ASC 842, did not result in a cumulative-effect adjustment to the opening balance of retained earnings.

The company has not elected the practical expedient under which the lease components would not be separated from the nonlease components. Therefore, the Company allocates the total transaction price to the lease component and nonlease components on a relative stand-alone price basis obtained from the lessor. Our facility leases include one or more options to renew, with renewal terms that can extend the lease term from three to five years. As of March 31, 2019, the renewal options were not reasonably certain; therefore, the payments associated with renewal were excluded from the measurement of the lease liability and ROU asset at March 31, 2019. The Company determined that there was no discount rate implicit in its leases. Thus, the Company used its incremental borrowing rate of 15% to discount the lease payments in determination of its ROU assets and lease liabilities for all leases.

Upon adoption of ASU 2016-02, the Company determined its ROU assets related to the operating leases for its principal research facility in New Haven, Connecticut, and its office facilities in Chapel Hill, North Carolina were impaired and therefore reduced to a fair value of zero with a corresponding charge to retained opening earnings of $1,942. See Note 2 for further details. As of March 31, 2019, the lease liability associated with these leases was $462 and $521, respectively.

In March 2019, the Company terminated its operating lease for its principal research facility in New Haven, Connecticut. In connection with the termination, the Company agreed to pay the lessor a $462 early termination fee. As a result, the Company reduced the lease liability equal to the termination fee and recorded a gain of $792, which was recorded in other income.

Lease cost recognized under ASC 842 was $474 for the three months ended March 31, 2019. Lease cost for the three months ended March 31, 2018 was $333, recognized under ASC 840, the lease accounting standard in effect prior to 2019.

As of March 31, 2019, the Company's ROU assets and lease liabilities were as follows:

	Classification	March 31, 2019
Assets
Total operating lease assets	Other assets	$	4,902
Liabilities
Current	Deferred purchase price and other liabilities	$	2,558
Noncurrent	Other long-term liabilities	4,086
Total operating lease liabilities		$	6,644

As of March 31, 2019, the maturities of the Company's lease liabilities were as follows:

Maturity of Lease Liabilities	Amount
Remainder of 2019	$	2,136
2020	2,248
2021	1,962
2022	1,235
2023	626
After 2023	260
Total operating lease payments	$	8,467
Less: Interest	(1,823		)
Present value of operating lease liabilities	$	6,644

As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting standard, ASC 840, the total commitment for our non-cancelable operating lease was $8,568 as of December 31, 2018:

Maturity of Lease Liabilities	Amount
2019	$	2,348
2020	2,269
2021	1,827
2022	1,238
2023	624
2024 and thereafter	262
Total operating lease payments	$	8,568

As of March 31, 2019, the weighted average remaining lease term was 3.7 years, calculated on the basis of the remaining lease term and the lease liability balance of each lease as of March 31, 2019.

The following table sets forth supplemental cash flow information for the three months ended March 31, 2019:

	Three Months Ended March 31, 2019
Cash paid for amounts included in the measurement of operating lease liabilities	$	621
Right of use assets obtained in exchange for lease obligations	$	378

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Stock-Based Compensation

3 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock-Based Compensation

STOCK-BASED COMPENSATION

In the first three months of 2019, we granted 64,400 stock options and 440,000 restricted stock units under our incentive stock plans.  At March 31, 2019, approximately 1,502,400 shares were reserved for future grants. As of March 31, 2019, there were 450,000 restricted stock unit awards outstanding, and details regarding the number of options outstanding and exercisable as of March 31, 2019, is as follows: 

	Outstanding		Exercisable
Number of shares	658,532		147,281
Weighted-average remaining life	8.4		5.3
Weighted-average exercise price	$	52.74	$	132.35
Intrinsic value	$	—	$	—

The total unrecognized share-based compensation expense at March 31, 2019, was approximately $8,969, which is expected to be recognized over the next 3 years.

Stock-based compensation expense recognized in the three months ended March 31, 2019, was as follows:

	Three Months Ended March 31,
	2019		2018
Cost of goods sold	$	—	$	125
Research and development	79		131
Selling, general and administrative	813		699
Total	$	892	$	955

No related tax benefits associated with stock-based compensation expense have been recognized and no related tax benefits have been realized from the exercise of stock options due to our net losses.

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Income Taxes

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

INCOME TAXES

At the end of each interim period, the Company makes its best estimate of the effective tax rate expected to be applicable for the full calendar year and uses that rate to provide for income taxes on a current year-to-date basis before discrete items. If a reliable estimate cannot be made, the Company may make a reasonable estimate of the annual effective tax rate, including use of the actual effective rate for the year-to-date. The impact of the discrete items is recorded in the quarter in which they occur.

The Company utilizes the liability method of accounting for income taxes and deferred taxes which are determined based on the differences between the financial statements and tax basis of assets and liabilities given the provisions of the enacted tax laws. In assessing the realizability of the deferred tax assets, the Company considered whether it is more likely than not that some portion or all of the deferred tax assets will not be realized through the generation of future taxable income. In making this determination, the Company assessed all of the evidence available at the time including recent earnings, forecasted income projections, and historical financial performance. The Company has fully reserved deferred tax assets as a result of this assessment.

Based on the Company’s full valuation allowance against the net deferred tax assets, the Company’s effective tax rate for the calendar year is zero, and zero income tax expense was recorded in the three and nine months ended March 31, 2019 and 2018.

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Net Loss Per Share

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Net Loss Per Share

NET LOSS PER SHARE

Basic net loss attributable to common shareholders per share is computed by dividing the net loss attributable to common shareholders by the weighted-average number of common shares outstanding for the period. We compute diluted loss per common share after giving consideration to the dilutive effect of stock options and warrants that are outstanding during the period, except where such nonparticipating securities would be antidilutive. Because we have reported net losses for the three months ended March 31, 2019 and 2018, diluted net loss per common share is the same as basic net loss per common share for those periods. The weighted-average shares outstanding, reported loss per share and potential dilutive common share equivalents for the three months ended March 31, 2019 and March 31, 2018, have been retroactively adjusted to reflect the 1-for-5 reverse stock split which was effective February 22, 2019.

The following potentially dilutive securities (in common stock equivalent shares) have been excluded from the computation of diluted weighted-average shares outstanding because such securities have an antidilutive impact due to losses reported:

	Three Months Ended March 31,
	2019	2018
Warrants outstanding	766,680	770,486
Stock options outstanding	658,532	397,429
Restricted stock units outstanding	450,000	56,092
	1,875,212	1,224,007

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

COMMITMENTS AND CONTINGENCIES

As discussed in Note 11, on November 3, 2017, Melinta merged with Cempra, Inc. in a business combination. Prior to the merger, on November 4, 2016, a securities class action lawsuit was commenced in the United States District Court, Middle District of North Carolina, Durham Division, naming Cempra, Inc. (now known as Melinta Therapeutics, Inc.) (for purposes of this Contingencies section, “Cempra”) and certain of Cempra’s officers as defendants. Two substantially similar lawsuits were filed in the United States District Court, Middle District of North Carolina on November 22, 2016, and December 30, 2016, respectively. Pursuant to the Private Securities Litigation Reform Act, on July 6, 2017, the court consolidated the three lawsuits into a single action and appointed a lead plaintiff and co-lead counsel in the consolidated case. On August 16, 2017, the plaintiff filed a consolidated amended complaint. The plaintiff alleged violations of the Securities Exchange Act of 1934 (the “Exchange Act”) in connection with allegedly false and misleading statements made by the defendants between July 7, 2015, and November 4, 2016 (the “Class Period”). The plaintiff sought to represent a class comprised of purchasers of Cempra’s common stock during the Class Period and sought damages, costs and expenses and such other relief as determined by the court. On September 29, 2017, the defendants filed a motion to dismiss the consolidated amended complaint. After the motion to dismiss was fully briefed, the court heard oral arguments on July 24, 2018. On October 26, 2018, the court granted the defendants’ motion to dismiss and dismissed the plaintiff’s consolidated amended complaint in its entirety. On November 21, 2018, the plaintiff filed its notice of appeal, and on December 20, 2018, the Fourth Circuit entered its briefing schedule. The appellant filed its brief on January 28, 2019; the appellee filed its response brief on February 27, 2019; and the appellant filed its reply brief on March 20, 2019. The court has not yet ruled on the appeal. We believe that we have meritorious defenses and intend to defend the lawsuit vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On December 21, 2016, a shareholder derivative lawsuit was commenced in the North Carolina Durham County Superior Court, naming certain of Cempra’s former and current officers and directors as defendants and Cempra as a nominal defendant, and asserting claims for breach of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement, and corporate waste (the “December 2016 Action”). A substantially similar lawsuit was filed in the North Carolina Durham County Superior Court on February 16, 2017 (the “February 2017 Action”). The complaints are based on similar allegations as asserted in the securities lawsuits described above and seek unspecified damages and attorneys’ fees. Both cases were served and transferred to the North Carolina Business Court as mandatory complex business cases. The Business Court consolidated the February 2017 Action into the December 2016 Action and appointed counsel for the plaintiff in the December 2016 Action as lead counsel. On July 6, 2017, the court stayed the action pending resolution of the putative securities class action. That stay was then lifted. The plaintiff filed an amended complaint on December 29, 2017, and was required to file a further amended complaint by February 6, 2018. On February 6, 2018, the plaintiff filed his second amended complaint. On March 8, 2018, the defendants filed their motion to dismiss or, in the alternative, stay the plaintiff’s second amended complaint. On April 9, 2018, the plaintiff filed his opposition to the defendants’ motion. The defendants filed their reply on April 26, 2018. On June 27, 2018, the parties filed a joint stipulation and consent order to stay the case until (1) 30 days after a final order dismissing the putative securities class action with prejudice is entered; or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to stay the proceedings on substantially the same terms. On June 29, 2018, the court entered an order staying the case pursuant to the joint stipulation, which expired by its term following entry of the court’s dismissal order in the above putative securities class action. On November 29, 2018, the parties filed a second joint stipulation to continue the stay until (1) 30 days after the putative securities class action appeal and any appeals therefrom have been resolved; or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to a stay of proceedings on substantially the same terms. On November 30, 2018, the court entered an order staying the case pursuant to the second joint stipulation. We believe that we have meritorious defenses and we intend to defend the lawsuit vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On January 3, 2018, the plaintiff who commenced the February 2017 Action, which was subsequently consolidated into the December 2016 Action, transmitted to the former Acting Chief Executive Officer of Cempra a litigation demand (the “Demand”). The Demand requested that Cempra’s Board of Directors (the “Board”) “commence an independent investigation into the matters raised” in the complaint filed in the February 2017 Action and the Demand, “take any and all appropriate steps for Cempra to recover, through litigation if necessary, the damages proximately caused by the directors’ and officers’ alleged breaches of fiduciary duty,” and “implement corporate governance enhancements to prevent recurrence of the alleged wrongdoing.” The Board has not yet formally responded to the Demand.

On July 31, 2017, a shareholder derivative lawsuit was commenced in the Court of Chancery of the State of Delaware, naming certain of Cempra’s former and current officers and directors as defendants and Cempra as nominal defendant, and asserting claims for breach of fiduciary duty, unjust enrichment, and corporate waste. The complaint is based on similar allegations as asserted in the putative securities class action described above and seeks unspecified damages and attorneys’ fees. On October 23, 2017, the defendants filed a motion to dismiss or, in the alternative, stay, the complaint, which was supported by an opening brief filed on November 9, 2017. On January 8, 2018, the plaintiff filed his answering brief in opposition to the defendants’ motion. The defendants filed their reply in support of their motion on February 7, 2018. On June 18, 2018, the parties filed a joint letter (1) indicating they have agreed to stay the case until the pending motion to dismiss in the November 4, 2016, consolidated federal securities action pending in the United States District Court, Middle District of North Carolina, Durham Division is decided; and (2) requesting that the June 22, 2018, oral argument scheduled for the defendants’ motion to dismiss be canceled. On June 27, 2018, the parties filed a stipulation and proposed order to stay the case until (1) 30 days after a final order dismissing the November 4, 2016, consolidated federal securities action pending in the United States District Court, Middle District of North Carolina, Durham Division with prejudice is entered; or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to stay the proceedings on substantially the same terms. On June 28, 2018, the court granted the proposed order and stayed the case on such terms, with that stay expiring by its term following entry of the court’s dismissal order in the above putative securities class action. On November 28, 2018, the parties filed a joint stipulation agreeing to stay the case, including all discovery, until (1) 30 days after the appeal for the November 4, 2016, consolidated federal securities action pending in the United States District Court, Middle District of North Carolina, Durham Division, and any appeals therefrom, was resolved or (2) the parties file a joint stipulation to terminate the stay in the event that a plaintiff in a subsequently filed derivative action makes similar allegations and does not agree to a stay of proceedings on substantially the same terms. On November 30, 2018, the court stayed the case pursuant to the joint stipulation. We believe that we have meritorious defenses and we intend to defend the lawsuit vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On September 15, 2017, a shareholder derivative lawsuit was commenced in the United States District Court for the Middle District of North Carolina, Durham Division, naming certain of Cempra’s former and current officers and directors as defendants and Cempra as nominal defendant, and asserting claims for breach of fiduciary duty, unjust enrichment, abuse of control, gross mismanagement, corporate waste, and violation of Section 14(a) of the Exchange Act. The complaint is based on similar allegations as asserted in the putative securities class action described above and seeks unspecified damages and attorneys’ fees. On December 1, 2017, the parties filed a joint motion seeking to stay the shareholder derivative lawsuit pending resolution of the putative securities class action, which stipulation was ordered by the court on December 11, 2017. On December 11, 2018, the parties filed a joint status report indicating that they believe the action remains stayed pending the outcome of the putative securities class action. We believe that we have meritorious defenses and we intend to defend the lawsuit vigorously. It is possible that similar lawsuits may yet be filed in the same or other courts that name the same or additional defendants.

On October 22, 2018, the Company received a litigation demand on behalf of putative Cempra shareholder Dr. Alan Cauldwell (the “Demand”), purporting to reinstate Dr. Cauldwell’s previous demand, dated as of January 3, 2018, held in abeyance after further discussion and negotiation with the Company. The Demand appears premised on the same factual allegations as the shareholder derivative lawsuits previously filed against the Company, as detailed above, and requests, in part, that Cempra’s board of directors commence an investigation of the misconduct alleged therein. We believe that we have meritorious defenses to Dr. Cauldwell’s claims, and we intend to defend any litigation relating to the Demand vigorously.

On December 3, 2018, James Naples, a purported Company shareholder, filed a putative class action suit against the Company and its Board of Directors in the Court of Chancery of the State of Delaware, alleging that the Board had breached its fiduciary duties related to a proposed, and subsequently abandoned, $75,000 common stock financing that was contemplated with affiliates of Vatera Holdings LLC. The suit alleged that the Board of Directors breached its fiduciary duties by, among other things, failing to disclose all material information to Company shareholders. The suit sought, among other things, to enjoin the shareholder vote on the financing proposal until additional disclosures were issued. On February 27, 2019, the suit was voluntarily dismissed with prejudice as moot, though the court has retained jurisdiction solely for the purpose of adjudicating a claim by the plaintiff for attorneys' fees and expenses, which the Company anticipates will be submitted.

On December 18, 2018, we filed a complaint in the Court of Chancery of the State of Delaware against Medicines for breach of contract claim and fraud arising from the Purchase and Sale Agreement (“Purchase Agreement”), dated November 28, 2017, pursuant to which we acquired the Infectious Disease Businesses from Medicines (the “Medicines Action”). In the complaint, we alleged claims for damages of at least $68,300. On December 28, 2018, we received a letter from Medicines demanding the payment of Milestone No. 4 under the Agreement and Plan of Merger, dated as of December 3, 2013, among Medicines, Rempex Pharmaceuticals, Inc. and the other parties thereto (“Merger Agreement”), in the amount of $30,000 (a milestone which the Company had assumed as an “Assumed Liability” under the Purchase Agreement). On January 7, 2019, we notified Medicines that we would not be making the Milestone No. 4 payment in the amount of $30,000, or the First Deferred Payment in the amount of $25,000 under the Purchase Agreement, because the Company had asserted claims in the litigation in excess of these amounts. On January 9, 2019, Medicines filed a motion to dismiss our claims, and on March 15, 2019, Medicines filed its Opening Brief in Support of Its Motion to Dismiss. On April 23, 2019, we filed an Amended Complaint alleging claims for damages of at least $80,000. On May 3, 2019, Medicines filed a motion to dismiss our claims in the Amended Complaint.

On March 28, 2019, Fortis Advisors LLC, in its capacity as the authorized legal representative of the former shareholders of Rempex Pharmaceuticals, Inc. (“Former Rempex Shareholders”), filed a complaint in the Court of Chancery of the State of Delaware against Medicines and us (the "Fortis Action"). The Former Rempex Shareholders’ complaint alleges breach of contract claims against Medicines arising out of the Merger Agreement and alleges a third-party beneficiary claim against us for breach of the Purchase Agreement. The Former Rempex Shareholders’ complaint seeks to hold us and Medicines jointly and severally liable for alleged damages of at least $30,000, as well as pre- and post-judgment interest, fees, costs, expenses, and disbursements. On April 18, 2019, we filed a motion to dismiss the Former Rempex Shareholders’ claim against us. Also on April 18, 2019, Medicines filed its answer to the Former Rempex Shareholders’ complaint, as well as a crossclaim against us. Medicines’ crossclaim asserts a breach of contract claim against us arising out of the Purchase Agreement. Medicines seeks an order requiring us to comply with all obligations under the Purchase Agreement, damages in an amount to be determined at trial, as well as pre- and post-judgment interest, fees, costs, expenses, and disbursements. On May 8, 2019, we filed an answer to Medicines' crossclaim, as well as a motion to consolidate the Fortis Action and the Medicines Action. We believe that we have meritorious defenses and we intend to defend the lawsuit and crossclaim vigorously.

Other than as described above, we are not a party to any legal proceedings and we are not aware of any claims or actions pending or threatened against us. In the future, we might from time to time become involved in litigation relating to claims arising from our ordinary course of business.

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Severance and Exit Costs

3 Months Ended

Mar. 31, 2019

Restructuring and Related Activities [Abstract]

Severance and Exit Costs

SEVERANCE AND EXIT COSTS

A summary of merger and non-merger activity in our severance accrual (included in accrued expenses or long-term liabilities on the condensed consolidated balance sheets) is below. 

Balance - December 31, 2018	$	9,767
Additional severance accruals (recorded in SG&A)	974
Severance payments	(5,550		)
Balance - March 31, 2019	$	5,191

On March 31, 2019, $5,120 was included in accrued expenses and $71 was included in long-term liabilities. We also recognized $0 and $75 of additional stock-based compensation expense related to the acceleration of equity awards for terminated employees under ASC 718 as severance expense during the three months ended March 31, 2019 and 2018, respectively.

In March 2019, the Company terminated its operating lease for its principal research facility in New Haven, Connecticut. In connection with the termination, the Company agreed to pay the lessor a $462 early termination fee.

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Principles of Consolidation and Basis of Presentation

Principles of Consolidation and Basis of Presentation—The accompanying unaudited condensed consolidated financial statements include the accounts and results of operations of Melinta and its wholly-owned subsidiaries. The condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”).The information reflects all adjustments (consisting of only normal, recurring adjustments) necessary for a fair presentation of the information.All intercompany balances and transactions have been eliminated in consolidation.

Use of Estimates

Use of Estimates—The preparation of these unaudited condensed consolidated financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Concentration of Credit Risk

Concentration of Credit Risk—Concentration of credit risk exists with respect to cash and cash equivalents and receivables. We maintain our cash andcash equivalents with federally insured financial institutions, and at times, the amounts may exceed the federally insured deposit limits. To date, we have not experienced any losses on our deposits of cash and cash equivalents. We believe that we are notexposed to significant credit risk due to the financial position of the depository institutions in which deposits are held.

Fair Value of Financial Instruments

Fair Value of Financial Instruments—The carrying amounts of our financial instruments, which include cash and cash equivalents, trade and other receivables, accounts payable, accrued expenses, and notes payable approximated their fair values at March 31, 2019, and December 31, 2018.

Intangible Assets

Intangible Assets—Intangible assets consist of capitalized milestone payments for the licenses we use to make our products and the fair value of identifiable intangible assets acquired. Given the uncertainty of forecasts of future revenue for our products, we amortize the cost of intangible assets on a straight-line basis over the estimated economic life of each asset, generally the exclusivity period of each associated product.

Revenue Recognition

Revenue Recognition—We recognize revenue from sales of our commercial products and under our licensing arrangements in accordance with Accounting Standards Codification 606, Revenue from Contracts with Customers ("ASC 606").

Product Sales

We recognize revenue from product sales upon the transfer of control, which depends on the delivery terms set forth in customer contracts and is generally upon delivery. Payment terms between Melinta and our customers vary by customer, but are generally between 30 and 60 days from the invoice date.

Management exercises judgment in estimating variable consideration. Provisions for prompt-pay discounts, chargebacks, rebates, wholesalers fees-for-services, group purchasing organization administration fees, voluntary patient assist programs, returns and other adjustments are recorded in the period the related sales are recognized. We provide discounts to certain hospitals and private entities, and we provide rebates to government agencies, group purchasing organizations and other private entities.

Chargebacks, rebates administration fees and discounts offered under our patient assistance programs are generally based upon the contractual discounts or the volume of purchases for our products. In the case of discounted pricing, we typically provide a credit to our wholesale customers (i.e., chargeback), representing the difference between the customer’s acquisition list price and the discounted price offered to certain hospitals. For the other certain discounts, we pay rebates based on the program that is ultimately utilized by the hospital or, in the retail setting, the patient under our patient assistance program. Factors used in these calculations include the identification of which products have been sold subject to a discount, rebate or administration fee, which customer, government agency, or group purchasing organization price terms apply, and the estimated lag time between the sale of the product and when the discount, rebate or administration fee is reported to us. Using historical trends, adjusted for current changes, we estimate the amount of these discounts, rebates and administration fees that will be paid, and record them as a reduction to gross sales when we recognize revenue for the sale of our products. Settlement of discounts, rebates and administration fees generally occurs from between one and six months after the initial sale to the wholesaler. We regularly analyze historical trends and make adjustments to reserves for changes in trends and terms of rebate programs. Historically, adjustments to prior periods' rebate accruals have not been material to net product sales.

For product returns, generally, our customers have the right to return any unopened product during the 18-month period beginning six months prior to the labeled expiration date and ending 12 months after the labeled expiration date. Where historical rates of return exist, we use history as a basis to establish a returns reserve for product shipped to wholesalers. For our newly launched products, for which we currently do not have history of product returns, we estimate returns based on third-party industry data for comparable products in the market. As we distribute our products and establish historical sales over a longer period of time (i.e., two years), we will be able to place more reliance on historical purchasing and return patterns of our customers when evaluating our reserves for product return. At the end of each reporting period for any of our products, we may decide to constrain revenue for product returns based on information from various sources, including channel inventory levels and dating and sell-through data, the expiration dates of product currently being shipped, price changes of competitive products and introductions of generic products.

Adjustments to gross sales related to prompt-pay discounts and fees-for-services require less judgment as they are based on contractual percentages and the amounts invoiced to the wholesalers.

At the end of each reporting period, we adjust our product sales allowances when we believe actual experience may differ from current estimates. The following table provides a summary of activity with respect to our sales allowances and accruals during the first three months of 2019: 

	Cash Discounts			Product Returns			Chargebacks			Fees-for- Service			MelintAssist			Government Rebates			Commercial Rebates			Admin Fees
Balance as of January 1, 2019	$	245		$	2,970		$	762		$	818		$	412		$	693		$	599		$	138
Allowances for sales	292			398			1,127			793			264			215			306			142
Payments & credits issued	(392		)	(206		)	(1,299		)	(686		)	(278		)	(73		)	(330		)	(127		)
Balance as of March 31, 2019	$	145		$	3,162		$	590		$	925		$	398		$	835		$	575		$	153

The allowances for cash discounts and chargebacks are recorded as contra-assets in trade receivables; the other balances are recorded in other accrued expenses.

Licensing Arrangements

We enter into license and collaboration agreements for the research and development and/or commercialization of therapeutic products. The terms of these agreements may include nonrefundable licensing fees, funding for research and development and manufacturing, milestone payments and royalties on any product sales derived from the collaborations in exchange for the delivery of licenses and rights to sell our products within specified territories outside the United States.

In the determination of whether our license and collaboration agreements are accounted for under ASC 606 or ASC 808, Contract Accounting, we first assess whether or not the partner in the arrangement is a customer. If the partner in the arrangement is deemed a customer as it relates to some or all of our performance obligations, then the consideration associated with those performance obligations is accounted for as revenue under ASC 606.

Our license agreements may include contingent or variable consideration based upon the achievement of regulatory- and sales-based milestones and future royalties based on a percentage of the partner’s net product sales. Performance obligations to deliver distinct licenses are recognized at a point in time. Milestone payments from licensees that are contingent and/or variable upon future regulatory events and product sales are not considered probable of being achieved until the milestones are earned and, therefore, the contingent revenue is subject to significant risk of reversal. As such, we constrain this variable consideration and do not include it in the transaction price (or recognize the revenue related to these milestones) until such time that the contingencies are resolved and generally recognized at a point in time. In addition, under the sales- or usage- based royalty exception in ASC 606, we do not estimate, at the onset of the arrangement, the variable consideration from future royalties or sales-based milestones. Instead, we wait to recognize royalty revenue until the future sales occur.

As of March 31, 2019, we do not have any contract assets or liabilities and our contracts do not have any significant financing components. And, we have not capitalized contract origination costs.  

Comprehensive Loss

Comprehensive Loss—Comprehensive loss is equal to net loss as presented in the accompanying statements of operations.

Advertising Expense

Advertising Expense—We record advertising expenses when they are incurred.

Leases

Leases—On January 1, 2019, we adopted Topic 842, Leases ("Topic 842") which requires lessees to recognize assets and liabilities for most leases at the lease inception. All of the Company's leases are operating leases, which are included in other long-term assets as operating right of use ("ROU") assets and other liabilities as operating lease liabilities in our consolidated balance sheets.

ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets and lease liabilities are recognized at the lease commencement date based on the present value of lease payments over the lease term. As our leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. We will use the implicit rate when readily determinable. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term. Our has lease agreements with lease and non-lease components, which are accounted for separately.

Segment and Geographic Information

Segment and Geographic Information—Operating segments are defined as components of an enterprise engaging in business activities for which discrete financial information is available and regularly reviewed by the chief operating decision maker in deciding how to allocate resources and in assessing performance. We operate and manage our business as one operating segment. Although substantially all of our license and contract research revenue is generated from agreements with companies that are domiciled outside of the U.S., we do not operate outside of the U.S., nor do we have any significant assets in any foreign country. See this Note 2 for further discussion of the license and contract research revenue.

Recently Issued, Adopted and Not Yet Adopted Accounting Pronouncements

Recently Issued and Adopted Accounting Pronouncements:

We adopted Topic 842 codified as ASC 842 on January 1, 2019 ("Effective Date"). ASC 842 requires lessees to recognize assets and liabilities on the balance sheet for most leases but recognize expense on the income statement in a manner similar to previous accounting. The standard requires a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements or an optional transition method, whereby an entity can elect to apply the standard at the adoption date and recognize a cumulative-effect adjustment to the opening balance of retained earnings in the period of adoption without restatement of comparative prior periods. We adopted this guidance on the Effective Date, electing the optional transition method. Consequently, we did not recast the comparative periods presented in this Quarterly Report on Form 10-Q. In addition, as permitted under ASC 842, we elected several practical expedients and therefore did not reassess at the Effective Date (1) whether any existing contract is or contains a lease, (2) the classification of existing leases, (3) whether previously capitalized costs continue to qualify as initial indirect costs. We also elected not to record on the balance sheet a lease whose term is 12 months or less and does not include a purchase option that the lessee is reasonably certain to exercise. We did not elect the practical expedient to not separate lease and non-lease components.

Upon adoption of ASC 842 on the Effective Date, we recorded ROU assets of $4,768, net of historical deferred rent liabilities and aggregate charges of $1,942 to retained earnings in connection with ROU asset impairments on the Effective Date. In addition, we recorded lease liabilities of $7,411 related to facility and vehicle leases. See Note 6 for further details. The transition to ASC 842, did not result in a cumulative-effect adjustment to the opening balance of retained earnings.

Recently Issued Accounting Pronouncements Not Yet Adopted

In August 2018, the FASB issued ASU 2018-13, Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement, which modifies or removes certain disclosure requirements in Topic 820, Fair Value Measurements. The update is effective for all entities for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2019. We are currently evaluating the impact of the adoption of this ASU on our financial statements.

In August 2018, the FASB issued ASU 2018-15, Internal-Use Software (Subtopic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract, which provides guidance on implementation costs incurred in a cloud computing arrangement that is a service contract. The ASU amends Topic 350, Intangibles—Goodwill and Other, to include these implementation costs in its scope and clarifies that a customer should apply ASC 350-40 to determine which implementation costs should be capitalized. The update is effective for public entities for fiscal years beginning after December 15, 2019. we are currently evaluating the impact the adoption of this ASU will have on our financial statements.

In November 2018, the FASB issued ASU 2018-18, Clarifying the Interaction between Topic 808 and Topic 606, which amends ASC 808 to clarify when transactions between participants in a collaborative arrangement under ASC 808 are within the scope of ASC 606, Revenue from Contracts with Customers. The ASU provides clarity in both ASC 606 and 808 regarding when transactions between collaborative arrangement participants should be accounted for as revenue under ASC 606. The update is effective for public entities for fiscal years beginning after December 15, 2019. we are currently evaluating the impact the adoption of this ASU will have on our financial statements.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Activity with Respect to Sales Allowances and Accruals

The following table provides a summary of activity with respect to our sales allowances and accruals during the first three months of 2019: 

	Cash Discounts			Product Returns			Chargebacks			Fees-for- Service			MelintAssist			Government Rebates			Commercial Rebates			Admin Fees
Balance as of January 1, 2019	$	245		$	2,970		$	762		$	818		$	412		$	693		$	599		$	138
Allowances for sales	292			398			1,127			793			264			215			306			142
Payments & credits issued	(392		)	(206		)	(1,299		)	(686		)	(278		)	(73		)	(330		)	(127		)
Balance as of March 31, 2019	$	145		$	3,162		$	590		$	925		$	398		$	835		$	575		$	153

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Balance Sheet Components (Tables)

3 Months Ended

Mar. 31, 2019

Balance Sheet Related Disclosures [Abstract]

Summary of Cash, Cash Equivalents and Restricted Cash

Cash, cash equivalents and restricted cash, as presented on the Condensed Consolidated Statements of Cash Flows, consisted of the following: 

	March 31, 2019		December 31, 2018
Cash and cash equivalents	$	116,901	$	81,808
Restricted cash (included in Other Assets)	200		200
Total cash, cash equivalents and restricted cash shown in the Condensed    Consolidated Statements of Cash Flows	$	117,101	$	82,008

Summary of Accounts, Notes, Loans and Financing Receivable

Accounts receivable consisted of the following:

	March 31, 2019		December 31, 2018
Trade receivables	$	7,460	$	11,509
Contracted services	6,958		10,293
Other receivables	474		683
Total receivables	$	14,892	$	22,485

Summary of Inventory

Inventory consisted of the following: 

	March 31, 2019			December 31, 2018
Raw materials	$	28,841		$	24,507
Work in process	9,977			11,700
Finished goods	11,685			12,204
Gross value of inventory	50,503			48,411
Less: valuation reserves	(6,052		)	(7,070		)
Total inventory	$	44,451		$	41,341

Summary of Other Assets

Other assets consisted of the following: 

	March 31, 2019		December 31, 2018
Deerfield disbursement option (see Note 4)	$	7,609	$	7,608
Long-term inventory deposits	48,044		51,127
Other assets	1,400		2,391
Right-of-use assets	4,902		—
Restricted cash	200		200
Total other assets	$	62,155	$	61,326

Summary of Accrued Expenses

Accrued expenses consisted of the following: 

	March 31, 2019		December 31, 2018
Accrued contracted services	$	1,318	$	2,909
Payroll related expenses	10,026		15,585
Professional fees	173		3,598
Accrued royalty payments	2,885		2,052
Accrued sales allowances	6,047		5,630
Accrued other	2,176		4,150
Total accrued expenses	$	22,625	$	33,924

Summary of Deferred Purchase Price and Other Liabilities

Other liabilities consisted of the following:

	March 31, 2019		December 31, 2018
Deferred purchase price	$	49,758	$	48,394
Milestone liability	30,000		30,000
Lease liabilities, current	2,558		—
Total deferred purchase price and other liabilities	$	82,316	$	78,394

Summary of Other Noncurrent Liabilities

Other liabilities consisted of the following:

	March 31, 2019		December 31, 2018
Lease liabilities, net of current	$	4,086	$	—
Long-term accrual royalties	1,215		2,230
Long-term deferred purchase price	4,853		4,708
Other long-term liabilities	71		506
Total other long-term liabilities	$	10,225	$	7,444

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Financing Arrangements (Tables)

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Schedule of Accretion of Principal Term Loan and Future Payments

Under the Facility Agreement, as amended, the accretion of the principal of the term loan, conversion redemptions, and the future payments, including the 4.0% exit fee due at the end of the term, but excluding the 11.75% rate applied to the $147,774 note per the form of the Facility Agreement, are as follows: 

	Beginning Balance		Record Conversion Right and Issuance Costs					Accretion Expense(2)		Principal Payments and Exit Fee(2)			Conversion			Ending Balance
January 5 - December 31, 2018	$	104,966						$	5,510	—			$	—		$	110,476
January 1 - March 31, 2019	110,476		(23,621		)	(1	)	1,962		—			(1,694		)	87,123
April 1 - December 31, 2019	87,123							7,734		—			—			94,857
Year Ending December 31, 2020	94,857							13,284		—			—			108,141
Year Ending December 31, 2021	108,141							18,044		—			—			126,185
Year Ending December 31, 2022	126,185							17,459		(69,089		)	—			74,555
Year Ending December 31, 2023	74,555							7,079		(75,370		)	—			6,264
Year Ending December 31, 2024	6,264							16		(6,280		)	—			—
Total			$	(23,621	)			$	71,088	$	(150,739	)	$	(1,694	)

(1.) Consists of $18,962, representing the day-one fair value of the conversion right, and $4,659, which is comprised of (a) additional issuance costs of $408, and (b) the initial fair value of the Deerfield Portion of the Vatera Loan Agreement of $4,251; as we did not receive cash from Deerfield but, rather, issued the Deerfield Portion in consideration for amending the Credit Facility, the $4,251 is treated as debt issuance costs. The total of $23,621 will be accreted over the remaining life of the loan.

(2.) Accretion expense, principal payments and the exit fee will be reduced each time Deerfield exercises their conversion right.

The accretion of the principal of the Loan Agreement, paid-in kind interest, and the future payments, including the exit fees due at the end of the term, for the $80,000 outstanding under the arrangement (including the $5,000 "Deerfield Portion"), are as follows: 

	Beginning Balance		Paid-in Kind Interest		Accretion  Expense		Principal Payments and Exit Fee			Ending Balance
February 25 - March 31, 2019	$	66,234	$	211	$	179	$	—		$	66,624
April 1 - December 31, 2019	66,624		1,542		1,370		—			69,536
Year Ending December 31, 2020	69,536		2,098		2,037		—			73,671
Year Ending December 31, 2021	73,671		2,146		2,296		—			78,113
Year Ending December 31, 2022	78,113		2,200		2,586		—			82,899
Year Ending December 31, 2023	82,899		2,257		2,905		—			88,061
Year Ending December 31, 2024	88,061		2,321		3,264		—			93,646
Year Ending December 31, 2025	93,646		38		57		(93,741		)	—
Total			$	12,813	$	14,694	$	(93,741	)

Schedule of Convertible Debt

The following table summarizes the fair value of the Convertible Notes on the Initial Draw Date:

Principal amount of Convertible Loans	$	80,000
Discount and related capital contribution associated with below market terms of Convertible Loans	(11,242		)
Discount on Deerfield portion of Convertible Loans	(749		)
Debt issue costs	(1,775		)
Carrying value at the Initial Draw Date	$	66,234

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Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value

The following table lists our assets and liabilities that are measured at fair value and the level of the lowest significant inputs used to measure their fair value at March 31, 2019, and December 31, 2018. The money market fund is included in cash & cash equivalents on the balance sheet; the other items are in the captioned line of the balance sheet. 

	As of March 31, 2019
	Level 1		Level 2		Level 3			Total
Assets:
Money market fund	$	33,068	$	—	$	—		$	33,068
Total assets at fair value	$	33,068	$	—	$	—		$	33,068
Liabilities:
Royalty liability in deferred purchase price	$	—	$	—	$	(1,102	)	$	(1,102	)
Royalty liability in contingent consideration	—		—		(4,854		)	(4,854		)
Warrant liability	—		—		(23		)	(23		)
Conversion liability (see Note 4)	—		—		(12,236		)	(12,236		)
Total liabilities at fair value	$	—	$	—	$	(18,215	)	$	(18,215	)

	As of December 31, 2018
	Level 1		Level 2		Level 3			Total
Assets:
Money market fund	$	32,883	$	—	$	—		$	32,883
Total assets at fair value	$	32,883	$	—	$	—		$	32,883
Liabilities:
Current royalty contingent consideration from IDB acquisition	$	—	$	—	$	(1,006	)	$	(1,006	)
Long-term royalty contingent consideration from IDB acquisition	—		—		(4,708		)	(4,708		)
Warrant liability	—		—		(38		)	(38		)
Total liabilities at fair value	$	—	$	—	$	(5,752	)	$	(5,752	)

Summary of Changes in Fair Value of Level 3 Assets and Liabilities

The following table summarizes the changes in fair value of our Level 3 assets and liabilities for the three months ended March 31, 2019 (there were no transfers into or out of Level 3 assets or liabilities during the period): 

Level 3 Liabilities	Fair Value at December 31, 2018			Accretion Recorded in Interest Expense			Change in Unrealized Gains (Losses)		(Issuances) Settlements, Net			Net Transfer Between Liabilities			Fair Value at March 31, 2019
Current royalty contingent consideration from IDB acquisition	$	(1,006	)	$	(176	)	$	—	$	382		$	(302	)	$	(1,102	)
Long-term royalty contingent consideration from IDB acquisition	(4,708		)	(448		)	—		—			302			(4,854		)
Warrant liability	(38		)	—			15		—			—			(23		)
Conversion liability (see Note 4)	—			—			6,000		(18,236		)	—			(12,236		)
Total liabilities at fair value	$	(5,752	)	$	(624	)	$	6,015	$	(17,854	)	$	—		$	(18,215	)

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Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Schedule of Lease Costs and Supplemental Cash Flow Information

As of March 31, 2019, the Company's ROU assets and lease liabilities were as follows:

	Classification	March 31, 2019
Assets
Total operating lease assets	Other assets	$	4,902
Liabilities
Current	Deferred purchase price and other liabilities	$	2,558
Noncurrent	Other long-term liabilities	4,086
Total operating lease liabilities		$	6,644

The following table sets forth supplemental cash flow information for the three months ended March 31, 2019:

	Three Months Ended March 31, 2019
Cash paid for amounts included in the measurement of operating lease liabilities	$	621
Right of use assets obtained in exchange for lease obligations	$	378

Schedule of Operating Lease Liability Maturities

As of March 31, 2019, the maturities of the Company's lease liabilities were as follows:

Maturity of Lease Liabilities	Amount
Remainder of 2019	$	2,136
2020	2,248
2021	1,962
2022	1,235
2023	626
After 2023	260
Total operating lease payments	$	8,467
Less: Interest	(1,823		)
Present value of operating lease liabilities	$	6,644

Schedule of Future Minimum Rental Payments for Operating Leases

As previously disclosed in our 2018 Annual Report on Form 10-K and under the previous lease accounting standard, ASC 840, the total commitment for our non-cancelable operating lease was $8,568 as of December 31, 2018:

Maturity of Lease Liabilities	Amount
2019	$	2,348
2020	2,269
2021	1,827
2022	1,238
2023	624
2024 and thereafter	262
Total operating lease payments	$	8,568

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Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options

As of March 31, 2019, there were 450,000 restricted stock unit awards outstanding, and details regarding the number of options outstanding and exercisable as of March 31, 2019, is as follows: 

	Outstanding		Exercisable
Number of shares	658,532		147,281
Weighted-average remaining life	8.4		5.3
Weighted-average exercise price	$	52.74	$	132.35
Intrinsic value	$	—	$	—

Stock-Based Compensation Expense Reported in Statements of Operations

Stock-based compensation expense recognized in the three months ended March 31, 2019, was as follows:

	Three Months Ended March 31,
	2019		2018
Cost of goods sold	$	—	$	125
Research and development	79		131
Selling, general and administrative	813		699
Total	$	892	$	955

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Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Antidilutive Securities Excluded from Computation of Diluted Weighted Average Shares Outstanding

The following potentially dilutive securities (in common stock equivalent shares) have been excluded from the computation of diluted weighted-average shares outstanding because such securities have an antidilutive impact due to losses reported:

	Three Months Ended March 31,
	2019	2018
Warrants outstanding	766,680	770,486
Stock options outstanding	658,532	397,429
Restricted stock units outstanding	450,000	56,092
	1,875,212	1,224,007

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Severance and Exit Costs (Tables)

3 Months Ended

Mar. 31, 2019

Restructuring and Related Activities [Abstract]

Summary of Activity in Severance Accrual (Included In Accrued Expenses or Long-Term Liabilities on Condensed Consolidated Balance Sheets)

A summary of merger and non-merger activity in our severance accrual (included in accrued expenses or long-term liabilities on the condensed consolidated balance sheets) is below. 

Balance - December 31, 2018	$	9,767
Additional severance accruals (recorded in SG&A)	974
Severance payments	(5,550		)
Balance - March 31, 2019	$	5,191

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Financial Statements - Narrative (Details)						1 Months Ended			3 Months Ended
	Jul. 10, 2019 USD ($)	Feb. 22, 2019 USD ($)	Jan. 14, 2019 USD ($)	Jan. 05, 2018 USD ($)	Jan. 05, 2018 USD ($)	Jul. 31, 2019 USD ($)	Feb. 28, 2019 USD ($)	Dec. 31, 2018 USD ($)	Jul. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($) product	Dec. 31, 2018 USD ($)	Mar. 31, 2018 USD ($)
Basis Of Presentation [Line Items]
Accumulated deficit								$ 719,843,000			$ 748,317,000	$ 719,843,000
Number of products | product											4
Percentage headcount reduction												20.00%
Proceeds from the issuance of convertible promissory notes											$ 75,000,000		$ 0
Cash and cash equivalents								81,808,000			116,901,000	$ 81,808,000
Maximum | Disbursement Option | Facility Agreement | Deerfield
Basis Of Presentation [Line Items]
Debt covenant, minimum revenue requirement					$ 75,000,000
Additional debt financing available					$ 50,000,000
Maximum | Disbursement Option | Facility Agreement | IDB | Deerfield
Basis Of Presentation [Line Items]
Additional debt financing available				$ 50,000,000
Maximum | Scenario, Forecast
Basis Of Presentation [Line Items]
Proceeds from the issuance of convertible promissory notes	$ 35,000,000									$ 25,000,000
Term Loan | Debt Covenant, Period One | Facility Agreement | Deerfield
Basis Of Presentation [Line Items]
Debt instrument covenant, minimum cash balance requirement			$ 40,000,000
Debt covenant, minimum revenue requirement			63,750,000
Term Loan | Debt Covenant, Period Two | Facility Agreement | Deerfield
Basis Of Presentation [Line Items]
Debt instrument covenant, minimum cash balance requirement			25,000,000
Debt covenant, minimum revenue requirement			$ 85,000,000
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Basis Of Presentation [Line Items]
Line credit maximum borrowing capacity								$ 135,000,000				$ 135,000,000
Period in which funding is provided								5 months
Proceeds from issuance of debt		$ 75,000,000					$ 75,000,000
Convertible Subordinated Debt | Scenario, Forecast | Senior Subordinated Convertible Loan Agreement
Basis Of Presentation [Line Items]
Proceeds from issuance of debt									$ 60,000,000
Convertible Subordinated Debt | Scenario, Forecast | Senior subordinated convertible loan agreement, final tranche
Basis Of Presentation [Line Items]
Proceeds from the issuance of convertible promissory notes						$ 35,000,000
Revolving credit facility | Scenario, Forecast | Facility Agreement
Basis Of Presentation [Line Items]
Line credit maximum borrowing capacity						$ 20,000,000			$ 20,000,000
Revolving credit facility | Convertible Subordinated Debt | Facility Agreement
Basis Of Presentation [Line Items]
Working capital revolver required, for final tranche of loans to be issued											$ 10,000,000

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Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands		3 Months Ended
	Jan. 01, 2019 USD ($)	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Intangible assets, amortization expense		$ 4,124	$ 4,675
Intangible assets, amortization expense, remaining nine months of 2019		12,371
Intangible assets, amortization expense, year 2020		16,495
Intangible assets, amortization expense, year 2021		17,000
Intangible assets, amortization expense, year 2022		17,000
Intangible assets, amortization expense, year 2023		17,000
Advertising expense		$ 176	$ 410
Number of operating segments | segment		1
Operating lease, right-of-use asset	$ 4,768	$ 4,902		$ 0
Operating lease, impairment	1,942
Operating lease, liability	$ 7,411	$ 6,644
Trade Receivables | Customer Cocentration Risk | Large Wholesaler Customer One
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage		36.00%
Trade Receivables | Customer Cocentration Risk | Large Wholesaler Customer Two
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage		29.00%
Trade Receivables | Customer Cocentration Risk | Large Wholesaler Customer Three
Summary Of Significant Accounting Policies [Line Items]
Concentration risk percentage		26.00%

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Summary of Significant Accounting Policies - Summary of Activity with Respect to Sales Allowances and Accruals (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Cash Discounts
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	$ 245
Allowances for sales	292
Payments & credits issued	(392)
Balance as of March 31, 2019	145
Product Returns
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	2,970
Allowances for sales	398
Payments & credits issued	(206)
Balance as of March 31, 2019	3,162
Chargebacks
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	762
Allowances for sales	1,127
Payments & credits issued	(1,299)
Balance as of March 31, 2019	590
Fees-for- Service
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	818
Allowances for sales	793
Payments & credits issued	(686)
Balance as of March 31, 2019	925
MelintAssist
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	412
Allowances for sales	264
Payments & credits issued	(278)
Balance as of March 31, 2019	398
Government Rebates
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	693
Allowances for sales	215
Payments & credits issued	(73)
Balance as of March 31, 2019	835
Commercial Rebates
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	599
Allowances for sales	306
Payments & credits issued	(330)
Balance as of March 31, 2019	575
Admin Fees
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance as of January 1, 2019	138
Allowances for sales	142
Payments & credits issued	(127)
Balance as of March 31, 2019	$ 153

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Balance Sheet Components - Summary of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Balance Sheet Related Disclosures [Abstract]
Cash and cash equivalents	$ 116,901	$ 81,808
Restricted cash (included in Other Assets)	200	200
Total cash, cash equivalents and restricted cash shown in the Condensed Consolidated Statements of Cash Flows	$ 117,101	$ 82,008	$ 91,679	$ 128,587

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Balance Sheet Components - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 14,892	$ 22,485
Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	7,460	11,509
Contracted services
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	6,958	10,293
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total receivables	$ 474	$ 683

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Balance Sheet Components - Summary of Inventory (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Raw materials	$ 28,841	$ 24,507
Work in process	9,977	11,700
Finished goods	11,685	12,204
Gross value of inventory	50,503	48,411
Less: valuation reserves	(6,052)	(7,070)
Total inventory	$ 44,451	$ 41,341

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Balance Sheet Components - Summary of Other Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Deerfield disbursement option (see Note 4)	$ 7,609		$ 7,608
Long-term inventory deposits	48,044		51,127
Other assets	1,400		2,391
Right-of-use assets	4,902	$ 4,768	0
Restricted cash	200		200
Total other assets	$ 62,155		$ 61,326

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Balance Sheet Components - Summary of Accrued Expenses (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Accrued contracted services	$ 1,318	$ 2,909
Payroll related expenses	10,026	15,585
Professional fees	173	3,598
Accrued royalty payments	2,885	2,052
Accrued sales allowances	6,047	5,630
Accrued other	2,176	4,150
Total accrued expenses	$ 22,625	$ 33,924

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Balance Sheet Components - Summary of Deferred Purchase Price and Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Deferred purchase price	$ 49,758	$ 48,394
Milestone liability	30,000	30,000
Lease liabilities, current	2,558	0
Deferred purchase price and other liabilities (See Notes 3 and 4)	$ 82,316	$ 78,394

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Balance Sheet Components - Summary of Other Long Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Balance Sheet Related Disclosures [Abstract]
Lease liabilities, net of current	$ 4,086	$ 0
Long-term accrual royalties	1,215	2,230
Long-term deferred purchase price	4,853	4,708
Other long-term liabilities	71	506
Total other long-term liabilities	$ 10,225	$ 7,444

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Financing Arrangements - 2017 Loan Agreement (Details) - USD ($)	1 Months Ended	3 Months Ended
	Jan. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	May 02, 2017
Debt Instrument [Line Items]
Loss on extinguishment of debt		$ 346,000	$ 2,595,000
Prepayment penalties and exit fees related to debt instrument		$ 0	$ 2,150,000
Debt Financing | 2017 Loan Agreement
Debt Instrument [Line Items]
Loan and security agreement				$ 80,000,000
Loss on extinguishment of debt	$ 2,595,000
Prepayment penalties and exit fees related to debt instrument	2,150,000
Write off of deferred debt issuance cost	$ 445,000
Equity Financing | 2017 Loan Agreement
Debt Instrument [Line Items]
Loan and security agreement				$ 10,000,000

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Financing Arrangements - Facility Agreement (Details) - USD ($)				1 Months Ended	3 Months Ended
	Feb. 22, 2019	Jan. 14, 2019	Jan. 05, 2018	Feb. 28, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Debt Instrument [Line Items]
Proceeds from issuance of common stock, net					$ 0	$ 51,452,000
Term Loan | Facility Agreement
Debt Instrument [Line Items]
Debt instrument exit fee percentage							2.00%
Term Loan | Facility Agreement Amendment
Debt Instrument [Line Items]
Debt instrument exit fee percentage		4.00%
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Debt instrument, issued price per share (usd per share)							$ 8.00
Percentage of convertible notes							5.00%
Proceeds from issuance of debt	$ 75,000,000			$ 75,000,000
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement | Maximum
Debt Instrument [Line Items]
Debt instrument exit fee percentage							3.00%
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement | Minimum
Debt Instrument [Line Items]
Debt instrument exit fee percentage							1.00%
Common Stock
Debt Instrument [Line Items]
Common stock shares issued (in shares)					1,705	40
Deerfield | Facility Agreement
Debt Instrument [Line Items]
Common stock shares issued (in shares)			625,569
Debt instrument, issued price per share (usd per share)			$ 67.5
Proceeds from issuance of common stock, net			$ 42,226,000
Deerfield | Facility Agreement Amendment
Debt Instrument [Line Items]
Reduction in net sales covenant, percentage		15.00%
Deerfield | Term Loan | Facility Agreement
Debt Instrument [Line Items]
Loan and security agreement		$ 147,774,000			$ 144,941,000
Percentage of convertible notes			11.75%
Debt instrument exit fee percentage							2.00%
Deerfield | Term Loan | Facility Agreement Amendment
Debt Instrument [Line Items]
Percentage of convertible notes			11.75%
Debt instrument exit fee percentage		4.00%	4.00%
Deerfield | Convertible Subordinated Debt | Deerfield Convertible Loan
Debt Instrument [Line Items]
Debt instrument, issued price per share (usd per share)					$ 5.15
Loan and security agreement		$ 74,000,000
Beneficial ownership cap, percentage		4.985%
Conversion price, calculation multiplier percentage		95.00%
Deerfield | Convertible Subordinated Debt | Deerfield Convertible Loan | Minimum
Debt Instrument [Line Items]
Debt instrument, issued price per share (usd per share)		$ 5.15
Deerfield | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Loan and security agreement	$ 5,000	$ 5,000,000
Deerfield | Vatera | Term Loan | Facility Agreement Amendment
Debt Instrument [Line Items]
Change in allowable ownership interest, not signifying change in control		50.00%
Deerfield | Debt Covenant, Period One | Term Loan | Facility Agreement
Debt Instrument [Line Items]
Debt covenant, minimum revenue requirement		$ 63,750,000
Debt instrument covenant, minimum cash balance requirement		40,000,000
Deerfield | Debt Covenant, Period Two | Term Loan | Facility Agreement
Debt Instrument [Line Items]
Debt covenant, minimum revenue requirement		85,000,000
Debt instrument covenant, minimum cash balance requirement		$ 25,000,000
Deerfield | Disbursement Option | Facility Agreement
Debt Instrument [Line Items]
Percentage of convertible notes			14.75%
Deerfield | Disbursement Option | Facility Agreement | Maximum
Debt Instrument [Line Items]
Debt instrument, disbursement			$ 50,000,000
Debt covenant, minimum revenue requirement			75,000,000
Deerfield | Common Stock | Term Loan | Facility Agreement
Debt Instrument [Line Items]
Proceeds received from notes payable			$ 190,000,000

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Financing Arrangements - Conversion Right (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Jan. 14, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Fair value of conversion right	$ 18,215			$ 5,752
Decrease in fair value	624
Loss on extinguishment of debt	346	$ 2,595
Expected volatility | Conversion liability
Debt Instrument [Line Items]
Conversion right liability, fair value input			80.00%
Estimated yield | Conversion liability
Debt Instrument [Line Items]
Conversion right liability, fair value input			20.60%
Conversion liability
Debt Instrument [Line Items]
Fair value of conversion right	12,236		$ 18,962
Decrease in fair value	(6,726)
Decrease in fair value	0
Other Income | Conversion liability
Debt Instrument [Line Items]
Decrease in fair value	6,000
Loss On Extinguishment Of Debt | Conversion liability
Debt Instrument [Line Items]
Decrease in fair value	726
Convertible Subordinated Debt | Deerfield | Deerfield Convertible Loan
Debt Instrument [Line Items]
Loss on extinguishment of debt	346
Debt amount converted	$ 2,833
Debt instrument, issued price per share (usd per share)	$ 5.15
Converted instrument, shares issued (in shares)	550,000

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Financing Arrangements - Term Loan (Details) - USD ($)		1 Months Ended	3 Months Ended
	Jan. 14, 2019	Feb. 28, 2019	Mar. 31, 2019	Mar. 31, 2018	Feb. 22, 2019	Dec. 31, 2018	Jan. 05, 2018
Debt Instrument [Line Items]
Noncurrent notes payable			$ 91,397,000			$ 110,476,000
Facility Agreement Amendment
Debt Instrument [Line Items]
Total future cash payments			150,739,000
Accretion expense			71,088,000
Debt amount converted			1,694,000
Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Total future cash payments			93,741,000
Accretion expense			(14,694,000)
Term Loan | Facility Agreement
Debt Instrument [Line Items]
Debt instrument exit fee percentage						2.00%
Term Loan | Facility Agreement Amendment
Debt Instrument [Line Items]
Debt instrument exit fee percentage	4.00%
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Percentage of convertible notes						5.00%
January 1 - March 31, 2019 | Facility Agreement Amendment
Debt Instrument [Line Items]
Total future cash payments			0
Accretion expense			1,962,000
Debt amount converted			1,694,000
Noncurrent notes payable			87,123,000			$ 110,476,000
January 1 - March 31, 2019 | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Total future cash payments			0
Accretion expense			(1,370,000)
Noncurrent notes payable			69,536,000			$ 66,624,000
Deerfield | Term Loan | Facility Agreement
Debt Instrument [Line Items]
Debt instrument exit fee percentage						2.00%
Total future cash payments	$ 153,685,000		(150,739,000)
Loan and security agreement	147,774,000		144,941,000
Debt instrument exit fee	$ 5,911,000		$ 5,798,000
Percentage of convertible notes							11.75%
Deerfield | Term Loan | Facility Agreement Amendment
Debt Instrument [Line Items]
Debt instrument exit fee percentage	4.00%						4.00%
Effective interest rate			30.00%
Interest expense			$ 4,229,000	$ 4,196,000
Accretion expense			1,962,000	$ 1,124,000
Percentage of convertible notes							11.75%
Deerfield | Convertible Subordinated Debt | Deerfield Convertible Loan
Debt Instrument [Line Items]
Loan and security agreement	$ 74,000,000
Debt amount converted			2,833,000
Discounted value of amount converted		$ (1,694,000)
Deerfield | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Loan and security agreement	$ 5,000,000				$ 5,000
Effective interest rate					8.60%
Noncurrent notes payable			$ 4,274,000

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Financing Arrangements - Schedule of Accretion of Deerfield Principal Term Loan and Future Payments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Feb. 22, 2019	Jan. 14, 2019	Dec. 31, 2018
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	$ 110,476
Ending Balance	91,397
Total liabilities at fair value	18,215			$ 5,752
Senior Subordinated Convertible Loan Agreement
Accretion and Future Payments of Term Loan [Roll Forward]
Accretion Expense	(14,694)
Principal Payments and Exit Fee	(93,741)
Senior Subordinated Convertible Loan Agreement | January 5 - December 31, 2018
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	66,234
Accretion Expense	(179)
Principal Payments and Exit Fee	0
Ending Balance	66,624
Senior Subordinated Convertible Loan Agreement | January 1 - March 31, 2019
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	66,624
Accretion Expense	(1,370)
Principal Payments and Exit Fee	0
Ending Balance	69,536
Senior Subordinated Convertible Loan Agreement | April 1 - December 31, 2019
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	69,536
Accretion Expense	(2,037)
Principal Payments and Exit Fee	0
Ending Balance	73,671
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2020
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	73,671
Accretion Expense	(2,296)
Principal Payments and Exit Fee	0
Ending Balance	78,113
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2021
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	78,113
Accretion Expense	(2,586)
Principal Payments and Exit Fee	0
Ending Balance	82,899
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2022
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	82,899
Accretion Expense	(2,905)
Principal Payments and Exit Fee	0
Ending Balance	88,061
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2023
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	88,061
Accretion Expense	(3,264)
Principal Payments and Exit Fee	0
Ending Balance	93,646
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2024
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	93,646
Accretion Expense	(57)
Principal Payments and Exit Fee	(93,741)
Ending Balance	0
Facility Agreement Amendment
Accretion and Future Payments of Term Loan [Roll Forward]
Record Conversion Right and Issuance Costs	(23,621)
Accretion Expense	71,088
Principal Payments and Exit Fee	(150,739)
Conversion	(1,694)
Facility Agreement Amendment | January 5 - December 31, 2018
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	104,966
Accretion Expense	5,510
Principal Payments and Exit Fee	0
Conversion	0
Ending Balance	110,476
Facility Agreement Amendment | January 1 - March 31, 2019
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	110,476
Record Conversion Right and Issuance Costs	(23,621)
Accretion Expense	1,962
Principal Payments and Exit Fee	0
Conversion	(1,694)
Ending Balance	87,123
Debt issaunce costs		$ 4,659
Additional debt issuance costs incurred	408
Facility Agreement Amendment | April 1 - December 31, 2019
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	87,123
Accretion Expense	7,734
Principal Payments and Exit Fee	0
Conversion	0
Ending Balance	94,857
Facility Agreement Amendment | Year Ending December 31, 2020
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	94,857
Accretion Expense	13,284
Principal Payments and Exit Fee	0
Conversion	0
Ending Balance	108,141
Facility Agreement Amendment | Year Ending December 31, 2021
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	108,141
Accretion Expense	18,044
Principal Payments and Exit Fee	0
Conversion	0
Ending Balance	126,185
Facility Agreement Amendment | Year Ending December 31, 2022
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	126,185
Accretion Expense	17,459
Principal Payments and Exit Fee	(69,089)
Conversion	0
Ending Balance	74,555
Facility Agreement Amendment | Year Ending December 31, 2023
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	74,555
Accretion Expense	7,079
Principal Payments and Exit Fee	(75,370)
Conversion	0
Ending Balance	6,264
Facility Agreement Amendment | Year Ending December 31, 2024
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	6,264
Accretion Expense	16
Principal Payments and Exit Fee	(6,280)
Conversion	0
Ending Balance	0
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Accretion and Future Payments of Term Loan [Roll Forward]
Debt issaunce costs		1,775
Deerfield | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Accretion and Future Payments of Term Loan [Roll Forward]
Ending Balance	4,274
Debt issaunce costs		$ 4,251
Conversion liability
Accretion and Future Payments of Term Loan [Roll Forward]
Total liabilities at fair value	$ 12,236		$ 18,962

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Financing Arrangements - Vatera Loan Agreement (Details)			1 Months Ended		3 Months Ended				12 Months Ended
	Jul. 10, 2019 USD ($)	Feb. 22, 2019 USD ($)	Jul. 31, 2019 USD ($)	Feb. 28, 2019 USD ($)	Jul. 31, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($) $ / shares	Jan. 14, 2019 USD ($)	Jan. 05, 2018 $ / shares
Debt Instrument [Line Items]
Proceeds from the issuance of convertible promissory notes							$ 75,000,000	$ 0
Noncurrent notes payable							91,397,000		$ 110,476,000
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Line credit maximum borrowing capacity									$ 135,000,000
Debt instrument stated percentage									5.00%
Interest paid in cash, percentage									50.00%
Interest paid in kind, percentage									50.00%
Initial conversion rate									0.00125
Debt instrument conversion ratio									100
Debt instrument, issued price per share (usd per share) | $ / shares									$ 8.00
Proceeds from issuance of debt		$ 75,000,000		$ 75,000,000
Line of credit facility amount outstanding		80,000
Convertible debt, fair value		63,758,000
Unamortized debt issuance costs		11,242,000
Debt issaunce costs		1,775,000
Fair value of long term debt		66,234,000
Long-term debt, gross		80,000,000					80,000
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement | Minimum
Debt Instrument [Line Items]
Debt instrument exit fee percentage									1.00%
Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement | Maximum
Debt Instrument [Line Items]
Debt instrument exit fee percentage									3.00%
Deerfield | Facility Agreement
Debt Instrument [Line Items]
Debt instrument, issued price per share (usd per share) | $ / shares											$ 67.5
Deerfield | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Loan and security agreement		5,000								$ 5,000,000
Unamortized debt issuance costs		749,000
Debt issaunce costs		4,251,000
Interim exit fee		$ 928,000
Effective interest rate		8.60%
Fair value of long term debt							4,000
Long-term debt, gross							5,000
Noncurrent notes payable							4,274,000
Vatera | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Debt issaunce costs		$ 1,775,000
Fair value of long term debt							62,000
Noncurrent notes payable							62,350,000
Scenario, Forecast | Maximum
Debt Instrument [Line Items]
Proceeds from the issuance of convertible promissory notes	$ 35,000,000					$ 25,000,000
Scenario, Forecast | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Proceeds from issuance of debt					$ 60,000,000
Scenario, Forecast | Convertible Subordinated Debt | Senior subordinated convertible loan agreement, final tranche
Debt Instrument [Line Items]
Proceeds from the issuance of convertible promissory notes			$ 35,000,000
Revolving credit facility | Convertible Subordinated Debt | Facility Agreement
Debt Instrument [Line Items]
Working capital revolver required, for final tranche of loans to be issued							10,000,000
Revolving credit facility | Scenario, Forecast | Facility Agreement
Debt Instrument [Line Items]
Line credit maximum borrowing capacity			$ 20,000,000		$ 20,000,000
January 5 - December 31, 2018 | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Noncurrent notes payable							$ 66,624,000		$ 66,234,000
Expected volatility | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Debt instrument, measurement input		0.76
Estimated yield | Convertible Subordinated Debt | Senior Subordinated Convertible Loan Agreement
Debt Instrument [Line Items]
Debt instrument, measurement input		0.298

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Financing Arrangements - Schedule of Convertible Loans on Initial Draw Date (Details) - Convertible Subordinated Debt - Senior Subordinated Convertible Loan Agreement - USD ($)	Mar. 31, 2019	Feb. 22, 2019
Debt Instrument [Line Items]
Principal amount of Convertible Loans	$ 80,000	$ 80,000,000
Discount and related capital contribution associated with below market terms of Convertible Loans		(11,242,000)
Debt issue costs		(1,775,000)
Long-term debt		66,234,000
Deerfield
Debt Instrument [Line Items]
Principal amount of Convertible Loans	$ 5,000
Discount and related capital contribution associated with below market terms of Convertible Loans		(749,000)
Debt issue costs		$ (4,251,000)

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Financing Arrangements - Schedule of Accretion of Vatera Principal Term Loan and Future Payments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	$ 110,476
Ending Balance	91,397
Senior Subordinated Convertible Loan Agreement
Accretion and Future Payments of Term Loan [Roll Forward]
Paid-in-Kind Interest	12,813
Accretion Expense	14,694
Principal Payments and Exit Fee	(93,741)
Senior Subordinated Convertible Loan Agreement | February 25 - March 31, 2019
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	66,234
Paid-in-Kind Interest	211
Accretion Expense	179
Principal Payments and Exit Fee	0
Ending Balance	66,624
Senior Subordinated Convertible Loan Agreement | April 1 - December 31, 2019
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	66,624
Paid-in-Kind Interest	1,542
Accretion Expense	1,370
Principal Payments and Exit Fee	0
Ending Balance	69,536
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2020
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	69,536
Paid-in-Kind Interest	2,098
Accretion Expense	2,037
Principal Payments and Exit Fee	0
Ending Balance	73,671
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2021
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	73,671
Paid-in-Kind Interest	2,146
Accretion Expense	2,296
Principal Payments and Exit Fee	0
Ending Balance	78,113
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2022
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	78,113
Paid-in-Kind Interest	2,200
Accretion Expense	2,586
Principal Payments and Exit Fee	0
Ending Balance	82,899
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2023
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	82,899
Paid-in-Kind Interest	2,257
Accretion Expense	2,905
Principal Payments and Exit Fee	0
Ending Balance	88,061
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2024
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	88,061
Paid-in-Kind Interest	2,321
Accretion Expense	3,264
Principal Payments and Exit Fee	0
Ending Balance	93,646
Senior Subordinated Convertible Loan Agreement | Year Ending December 31, 2025
Accretion and Future Payments of Term Loan [Roll Forward]
Beginning Balance	93,646
Paid-in-Kind Interest	38
Accretion Expense	57
Principal Payments and Exit Fee	(93,741)
Ending Balance	$ 0

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Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 14, 2019	Dec. 31, 2018
Assets:
Total assets at fair value	$ 33,068		$ 32,883
Liabilities:
Total liabilities at fair value	(18,215)		(5,752)
Royalty liability in deferred purchase price
Liabilities:
Total liabilities at fair value	(1,102)		(1,006)
Royalty liability in contingent consideration
Liabilities:
Total liabilities at fair value	(4,854)		(4,708)
Warrant liability
Liabilities:
Total liabilities at fair value	(23)		(38)
Conversion liability
Liabilities:
Total liabilities at fair value	(12,236)	$ (18,962)
Money Market Funds
Assets:
Total assets at fair value	33,068		32,883
Level 1
Assets:
Total assets at fair value	33,068		32,883
Liabilities:
Total liabilities at fair value	0		0
Level 1 | Royalty liability in deferred purchase price
Liabilities:
Total liabilities at fair value	0		0
Level 1 | Royalty liability in contingent consideration
Liabilities:
Total liabilities at fair value	0		0
Level 1 | Warrant liability
Liabilities:
Total liabilities at fair value	0		0
Level 1 | Conversion liability
Liabilities:
Total liabilities at fair value	0
Level 1 | Money Market Funds
Assets:
Total assets at fair value	33,068		32,883
Level 2
Assets:
Total assets at fair value	0		0
Liabilities:
Total liabilities at fair value	0		0
Level 2 | Royalty liability in deferred purchase price
Liabilities:
Total liabilities at fair value	0		0
Level 2 | Royalty liability in contingent consideration
Liabilities:
Total liabilities at fair value	0		0
Level 2 | Warrant liability
Liabilities:
Total liabilities at fair value	0		0
Level 2 | Conversion liability
Liabilities:
Total liabilities at fair value	0
Level 2 | Money Market Funds
Assets:
Total assets at fair value	0		0
Level 3
Assets:
Total assets at fair value	0		0
Liabilities:
Total liabilities at fair value	(18,215)		(5,752)
Level 3 | Royalty liability in deferred purchase price
Liabilities:
Total liabilities at fair value	(1,102)		(1,006)
Level 3 | Royalty liability in contingent consideration
Liabilities:
Total liabilities at fair value	(4,854)		(4,708)
Level 3 | Warrant liability
Liabilities:
Total liabilities at fair value	(23)		(38)
Level 3 | Conversion liability
Liabilities:
Total liabilities at fair value	(12,236)
Level 3 | Money Market Funds
Assets:
Total assets at fair value	$ 0		$ 0

XML

Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Assets and Liabilities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value at December 31, 2018	$ (5,752)
Accretion Recorded in Interest Expense	(624)
Change in Unrealized Gains (Losses)	6,015
(Issuances) Settlements, Net	(17,854)
Net Transfer Between Liabilities	0
Fair Value at March 31, 2019	(18,215)
Royalty liability in deferred purchase price
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value at December 31, 2018	(1,006)
Accretion Recorded in Interest Expense	(176)
Change in Unrealized Gains (Losses)	0
(Issuances) Settlements, Net	382
Net Transfer Between Liabilities	(302)
Fair Value at March 31, 2019	(1,102)
Royalty liability in contingent consideration
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value at December 31, 2018	(4,708)
Accretion Recorded in Interest Expense	(448)
Change in Unrealized Gains (Losses)	0
(Issuances) Settlements, Net	0
Net Transfer Between Liabilities	302
Fair Value at March 31, 2019	(4,854)
Warrant liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value at December 31, 2018	(38)
Accretion Recorded in Interest Expense	0
Change in Unrealized Gains (Losses)	15
(Issuances) Settlements, Net	0
Net Transfer Between Liabilities	0
Fair Value at March 31, 2019	(23)
Conversion liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Fair Value at December 31, 2018	0
Accretion Recorded in Interest Expense	0
Change in Unrealized Gains (Losses)	6,000
(Issuances) Settlements, Net	(18,236)
Net Transfer Between Liabilities	0
Fair Value at March 31, 2019	$ (12,236)

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Leases - Narrative (Details) $ in Thousands		1 Months Ended	3 Months Ended
	Jan. 01, 2019 USD ($)	Mar. 31, 2019 USD ($) lease	Mar. 31, 2019 USD ($) lease	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Lessor, Lease, Description [Line Items]
Number of leases | lease		3	3
Discount rate, percent		15.00%	15.00%
Operating lease, impairment	$ 1,942
Operating lease, liability	$ 7,411	$ 6,644	$ 6,644
Early lease termination fee		462
Gain on termination of lease		$ 792
Future minimum payments due under topic 840					$ 8,568
Weighted average remaining lease term		3 years 8 months 12 days	3 years 8 months 12 days
Operating lease cost, Topic 842			$ 474
Operating lease cost, Topic 840				$ 333
Minimum
Lessor, Lease, Description [Line Items]
Lease renewal term		3 years	3 years
Maximum
Lessor, Lease, Description [Line Items]
Lease renewal term		5 years	5 years
CONNECTICUT
Lessor, Lease, Description [Line Items]
Operating lease, liability		$ 462	$ 462
NORTH CAROLINA
Lessor, Lease, Description [Line Items]
Operating lease, liability		$ 521	$ 521

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Leases - Lease Cost (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Assets
Operating lease, right-of-use asset	$ 4,902	$ 4,768	$ 0
Liabilities
Current	2,558		0
Noncurrent	4,086		$ 0
Total operating lease liabilities	$ 6,644	$ 7,411

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Leases - Operating Lease Liability Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jan. 01, 2019
Leases [Abstract]
2019	$ 2,136
2020	2,248
2021	1,962
2022	1,235
2023	626
After 2023	260
Total operating lease payments	8,467
Less: Interest	(1,823)
Total operating lease liabilities	$ 6,644	$ 7,411

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Leases - Future Minimum Operating Lease Payments Under Topic 840 (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 2,348
2020	2,269
2021	1,827
2022	1,238
2023	624
2024 and thereafter	262
Total operating lease payments	$ 8,568

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Leases - Operating Lease Supplemental Cash Flow Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 621
Right of use assets obtained in exchange for lease obligations	$ 378

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Stock-Based Compensation - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in the period (in shares)	64,400
Shares reserved for future issuance (in shares)	1,502,400
Number of equity instruments outstanding (in shares)	658,532
Compensation, costs not yet recognized | $	$ 8,969
Compensation, costs not yet recognized, recognition period	3 years
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity instruments issued in the period (in shares)	440,000
Number of equity instruments outstanding (in shares)	450,000

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Stock-Based Compensation - Stock Options (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) $ / shares shares
Outstanding
Number of shares (in shares) | shares	658,532
Weighted-average remaining life	8 years 4 months 24 days
Weighted-average exercise price (in usd per share) | $ / shares	$ 52.74
Intrinsic value | $	$ 0
Options Exercisable [Abstract]
Number of shares (in shares) | shares	147,281
Weighted-average remaining life	5 years 3 months 18 days
Weighted-average exercise price (in usd per share) | $ / shares	$ 132.35
Intrinsic value | $	$ 0

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Stock-Based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 892	$ 955
Cost of goods sold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	0	125
Research and development
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	79	131
Selling, general and administrative
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation	$ 813	$ 699

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Income Taxes - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Effective tax rate	0.00%	0.00%
Income tax expense	$ 0	$ 0

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Net Loss Per Share - Narrative (Details)	Feb. 22, 2018
Earnings Per Share [Abstract]
Reverse stock split, conversion ratio for awards	0.2

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Net Loss Per Share - Antidilutive Securities Excluded from Computation of Diluted Weighted Average Shares Outstanding (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	1,875,212	1,224,007
Warrants outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	766,680	770,486
Stock options outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	658,532	397,429
Restricted stock units outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of diluted weighted average shares outstanding (in shares)	450,000	56,092

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Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands				3 Months Ended
	Mar. 28, 2019	Dec. 18, 2018	Dec. 03, 2018	Mar. 31, 2019	Mar. 31, 2018	Apr. 23, 2019
Loss Contingencies [Line Items]
Issuance of common shares			$ 75,000	$ 8	$ 3
Claim for damages sought by company		$ 68,300
Damages sought	30000
Subsequent Event
Loss Contingencies [Line Items]
Claim for damages sought by company						$ 80,000
IDB
Loss Contingencies [Line Items]
Milestone payment payable		30,000
Medicines Company | IDB
Loss Contingencies [Line Items]
Deferred payments recorded at fair value		$ 25,000

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Severance and Exit Costs - Summary of Activity in Severance Accrual (Included In Accrued Expenses or Long-Term Liabilities on Condensed Consolidated Balance Sheets) (Details) - Employee Severance $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Restructuring Reserve [Roll Forward]
December 31, 2018	$ 9,767
Additional severance accruals (recorded in SG&A)	974
Severance payments	(5,550)
March 31, 2019	$ 5,191

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Severance and Exit Costs - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Restructuring Cost and Reserve [Line Items]
Accrued expenses	$ 22,625	$ 22,625		$ 33,924
Long-term liabilities	10,225	10,225		$ 7,444
Early lease termination fee	462
Employee Severance
Restructuring Cost and Reserve [Line Items]
Accrued expenses	5,120	5,120
Long-term liabilities	$ 71	71
Additional stock-based compensation expense related to acceleration of equity awards		$ 0	$ 75

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Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 10,008,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	(1,942,000)
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	10,008,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (1,942,000)