10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM 10-Q

(Mark One)

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
	Or
¨	Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
	For the transition period from ________ to ___________

Commission File No. 0-23047

SIGA Technologies, Inc.(Exact name of registrant as specified in its charter)

Delaware	13-3864870
(State or other jurisdiction of	(IRS Employer Identification. No.)
incorporation or organization)
31 East 62nd Street	10065
New York, NY	(zip code)
(Address of principal executive offices)

Registrant’s telephone number, including area code: (212) 672-9100

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 every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No ¨.

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

Large accelerated filer ¨	Accelerated filer x
Non-accelerated filer ¨	Smaller reporting company ¨
	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.

Indicate by check mark whether the registrant has filed all documents and reports required to be filed by section 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court. Yes ¨ No ¨.

As of April 24, 2019, the registrant had outstanding 80,941,524 shares of common stock, par value $.0001, per share.

SIGA TECHNOLOGIES, INC.
FORM 10-Q

Table of Contents

		Page No.
PART I-FINANCIAL INFORMATION
Item 1.	Condensed Consolidated Financial Statements (Unaudited)	3
Item 2.	Management's Discussion and Analysis of Financial Condition and Results of Operations	18
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	21
Item 4.	Controls and Procedures	22
PART II- OTHER INFORMATION
Item 1.	Legal Proceedings	23
Item 1A	Risk Factors	23
Item 2.	Unregistered Sale of Equity Securities and Use of Proceeds	23
Item 3.	Defaults upon Senior Securities	23
Item 4.	Mine Safety Disclosures	23
Item 5.	Other Information	23
Item 6.	Exhibits	24
SIGNATURES		25

PART I - FINANCIAL INFORMATION

Item 1 - Condensed Consolidated Financial Statements

SIGA TECHNOLOGIES, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

	March 31, 2019			December 31, 2018
ASSETS
Current assets
Cash and cash equivalents	$	102,085,215		$	100,652,809
Restricted cash, short-term	11,461,290			11,452,078
Accounts receivable	4,099,954			1,959,133
Inventory	2,017,077			2,908,210
Prepaid expenses and other current assets	3,875,130			4,317,615
Total current assets	123,538,666			121,289,845
Property, plant and equipment, net	2,987,432			171,274
Restricted cash, long-term	66,794,243			68,292,023
Deferred tax assets, net	11,227,707			11,733,385
Goodwill	898,334			898,334
Other assets	992,966			1,058,880
Total assets	$	206,439,348		$	203,443,741
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities
Accounts payable	$	2,149,605		$	1,688,488
Accrued expenses and other current liabilities	9,957,736			9,648,917
Total current liabilities	12,107,341			11,337,405
Warrant liability	8,071,873			12,380,939
Other liabilities	3,534,054			1,263,113
Long-term debt	76,656,511			75,547,597
Total liabilities	100,369,779			100,529,054
Commitments and contingencies
Stockholders’ equity
Common stock ($.0001 par value, 600,000,000 shares authorized, 80,941,524 and 80,763,350 issued and outstanding at March 31, 2019, and December 31, 2018, respectively)	8,094			8,076
Additional paid-in capital	220,222,959			218,697,872
Accumulated deficit	(114,161,484		)	(115,791,261		)
Total stockholders’ equity	106,069,569			102,914,687
Total liabilities and stockholders’ equity	$	206,439,348		$	203,443,741

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

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SIGA TECHNOLOGIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (UNAUDITED)

	Three months ended March 31,
	2019			2018
Revenues
Product sales and supportive services	$	7,142,400		$	—
Research and development	3,316,684			1,747,934
Total revenues	10,459,084			1,747,934
Operating expenses
Cost of sales and supportive services	915,367			—
Selling, general and administrative	3,166,566			3,056,546
Research and development	3,997,281			3,007,827
Patent expenses	187,916			218,472
Total operating expenses	8,267,130			6,282,845
Operating income (loss)	2,191,954			(4,534,911		)
Gain (loss) from change in fair value of warrant liability	3,136,265			(3,303,114		)
Interest expense	(3,928,418		)	(3,748,818		)
Other income, net	736,129			2,235
Income (loss) before income taxes	2,135,930			(11,584,608		)
(Provision) benefit for income taxes	(506,153		)	2,352
Net and comprehensive income (loss)	$	1,629,777		$	(11,582,256	)
Basic earnings (loss) per share	$	0.02		$	(0.15	)
Diluted loss per share	$	(0.02	)	$	(0.15	)
Weighted average shares outstanding: basic	80,913,320			79,039,000
Weighted average shares outstanding: diluted	82,139,108			79,039,000

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

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SIGA TECHNOLOGIES, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

	Three months ended March 31,
	2019			2018
Cash flows from operating activities:
Net Income (loss)	$	1,629,777		$	(11,582,256	)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and other amortization	137,724			29,790
(Decrease)/increase in fair value of warrant liability	(3,136,265		)	3,303,114
Stock-based compensation	408,894			327,360
Deferred income taxes provision/(benefit)	505,678			(9,758		)
Non-cash interest expense	1,108,916			1,108,916
Changes in assets and liabilities:
Accounts receivable	(2,140,821		)	645,730
Inventory	891,133			—
Deferred costs	—			184,864
Prepaid expenses and other current assets	442,484			119,433
Other assets	65,916			—
Accounts payable, accrued expenses and other current liabilities	(937,637		)	(2,792,043		)
Deferred revenue	1,277,828			169,269
Other liabilities	(244,248		)	(66,122		)
Net cash provided by (used in) operating activities	9,379			(8,561,703		)
Cash flows from investing activities:
Capital expenditures	(8,951		)	—
Net cash used in investing activities	(8,951		)	—
Cash flows from financing activities:
Payment of employee tax obligations for common stock tendered	(56,590		)	—
Net cash used in financing activities	(56,590		)	—
Net decrease in cash, cash equivalents and restricted cash	(56,162		)	(8,561,703		)
Cash, cash equivalents and restricted cash at the beginning of period	180,396,910			37,101,586
Cash, cash equivalents and restricted cash at end of period	$	180,340,748		$	28,539,883
Supplemental disclosure of non-cash activities:
Conversion of warrants to common stock	$	1,172,801		$	—
Issuance of common stock upon cashless exercise	$	118,500		$	—

The accompanying notes are an integral part of these financial statements

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SIGA TECHNOLOGIES, INC.

NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

1.Condensed Consolidated Financial Statements

The financial statements are presented in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and the rules and regulations of the Securities and Exchange Commission (the “SEC”) for quarterly reports on Form 10-Q and should be read in conjunction with the Company’s audited financial statements and notes thereto for the year ended December 31, 2018, included in the 2018 Annual Report on Form 10-K. All terms used but not defined elsewhere herein have the meaning ascribed to them in the Company’s 2018 Annual Report on Form 10-K filed on March 5, 2019. In the opinion of management, all adjustments (consisting of normal and recurring adjustments) considered necessary for a fair statement of the results of the interim periods presented have been included. The 2018 year-end condensed consolidated balance sheet data were derived from the audited financial statements but do not include all disclosures required by U.S. GAAP. The results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results expected for the full year.

2. Summary of Significant Accounting Policies

Adoption of ASC 842

On January 1, 2019, the Company adopted ASC 842, Leases (“ASC 842”) using the modified retrospective approach as of the effective date of the standard without revising prior periods. In addition, the Company elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed the Company to carry forward its historical lease classification. In addition, the Company elected the hindsight practical expedient to determine the lease term for existing leases. The Company’s election of the hindsight practical expedient results in the extension of the Oregon lease term as it was determined that the first renewal option under this lease is expected to be exercised with a reasonable degree of certainty.

The Company was required to record an operating lease right-of-use asset and a corresponding operating lease liability, equal to the present value of the lease payments at the adoption date. In the determination of future lease payments, the Company has elected to aggregate lease components such as payments for rent, taxes and insurance costs with non-lease components such as maintenance costs and account for these payments as a single lease component. The present value of the lease payments is determined using the rate implicit in each lease, if known. Unless the rate implicit in the lease is known, the Company uses its incremental borrowing rate. The impact of adopting ASC 842 as of January 1, 2019 was an increase to operating lease right-of-use assets of approximately $2.9 million; an increase to operating lease liabilities of approximately $3.3 million; and a decrease to deferred rent of approximately $0.4 million.

Revenue Recognition

All of the Company’s revenue is derived from long-term contracts that span multiple years. The Company accounts for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). A contract’s transaction price is allocated to distinct performance obligations and recognized as revenue when, or as, a performance obligation is satisfied. As of March 31, 2019, the Company's active performance obligations, for the contracts outlined in Note 3, consist of the following: four performance obligations relate to research and development services; two relate to manufacture and delivery of product; and one is associated with storage of product. The aggregate amount of transaction price allocated to remaining performance obligations for the 2011 BARDA Contract, 2018 BARDA Contract and the IV Formulation R&D Contract was $60.0 million as of March 31, 2019. Remaining performance obligations represent the transaction price for which work has not been performed and excludes unexercised contract options.

Contract Balances

The timing of revenue recognition, billings and cash collections may result in billed accounts receivable, unbilled receivables (contract assets) and customer advances and deposits (contract liabilities) in the condensed consolidated balance sheets. Generally, amounts are billed as work progresses in accordance with agreed-upon contractual terms either at periodic intervals (monthly) or upon achievement of contractual milestones. Under typical payment terms of fixed price arrangements, the customer pays the Company either performance-based payments or progress payments. For the Company’s cost-type arrangements, the customer generally pays the Company for its actual costs incurred, as well as its allocated overhead and G&A costs. Such payments occur within a short period of time. When the Company receives consideration, or such consideration is unconditionally due, prior to transferring goods or services to the customer under the terms of a sales contract, the Company records deferred revenue, which represents a contract liability. During the three months ended March 31, 2019, the Company recognized revenue of $0.4 million that was included in deferred revenue at the beginning of the period.

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Restricted Cash and Cash Equivalents

A portion of the Company’s cash received from the Loan Agreement and all of the net cash proceeds from the Company's Priority Review Voucher ("PRV") sale on October 31, 2018 is restricted and were placed in reserve accounts. Cash originally received from the Loan Agreement, and placed in a reserve account, could only be used to pay interest on the Term Loan, aside from $5.0 million that was withdrawn from the reserve account on July 12, 2018 under the provisions of the Term Loan. Net cash received from the PRV sale is available to pay interest, fees and principal related to the Term Loan. See Note 8 for additional information.

The following table reconciles cash, cash equivalents and restricted cash per the condensed consolidated statements of cash flows to the condensed consolidated balance sheet for each respective period:

	As of
	March 31, 2019		December 31, 2018
Cash and cash equivalents	$	102,085,215	$	100,652,809
Restricted cash-short term	11,461,290		11,452,078
Restricted cash-long term	66,794,243		68,292,023
Cash, cash equivalents and restricted cash	$	180,340,748	$	180,396,910
	March 31, 2018		December 31, 2017
Cash and cash equivalents	$	13,934,807	$	19,857,833
Restricted cash-short term	10,850,136		10,701,305
Restricted cash-long term	3,754,940		6,542,448
Cash, cash equivalents and restricted cash	$	28,539,883	$	37,101,586

Recent Accounting Pronouncements

On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same one-step impairment test will be applied to goodwill at all reporting units, even those with zero or negative carrying amounts. The revised guidance will be applied prospectively, and is effective for fiscal years beginning after December 15, 2019. Early adoption is permitted for any impairment tests performed after January 1, 2017. The Company believes the adoption of ASU No. 2017-04 will not have a significant impact on its condensed consolidated financial statements.

3. Procurement Contracts and Research Agreements

2018 BARDA Contract

On September 10, 2018, the Company entered into a contract with the U.S. Biomedical Advanced Research and Development Authority (“BARDA”) pursuant to which SIGA agreed to deliver up to 1,488,000 courses of oral TPOXX® to the U.S. Strategic National Stockpile ("Strategic Stockpile"), and to manufacture and deliver to the Strategic Stockpile, or store as vendor-managed inventory, up to 212,000 courses of the intravenous (IV) formulation of TPOXX® ("IV TPOXX®"). Additionally, the contract includes funding from BARDA for advanced development of IV TPOXX®, post-marketing activities for oral and IV TPOXX®, and supportive procurement activities. The contract with BARDA (as amended, modified, or supplemented from time to time, the “2018 BARDA Contract”) currently contemplates, as of April 30, 2019, up to approximately $600.1 million of payments, of which approximately $51.7 million of payments are included within the base period of performance of five years, approximately $12.2 million of payments are related to exercised options and up to approximately $536.2 million of payments are currently classified as unexercised options. BARDA may choose in its sole discretion when, or whether, to exercise any of the unexercised options. The period of performance for options is up to ten years from the date of entry into the 2018 BARDA Contract and such options could be exercised at any time during the contract term, including during the base period of performance.

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The base period of performance provides for potential payments of approximately $51.7 million for the following activities: payments of approximately $11.1 million for the delivery of approximately 35,700 courses of oral TPOXX® to the Strategic Stockpile; payments of $8.0 million for the manufacture of 20,000 courses of final drug product of IV TPOXX® ("IV FDP"), of which $3.2 million of payments are related to the manufacture of bulk drug substance ("IV BDS") to be used in the manufacture of IV FDP; payments of approximately $32.0 million to fund advanced development of IV TPOXX®; and payments of approximately $0.6 million for supportive procurement activities. As of March 31, 2019, the Company had received $7.1 million for the first quarter 2019 delivery of approximately 23,000 courses of oral TPOXX® to the Strategic Stockpile and $3.2 million for the 2018 manufacture of IV BDS. IV BDS is expected to be used for the manufacture of 20,000 courses of IV FDP. The $3.2 million received for the manufacture of IV BDS has been recorded as deferred revenue as of December 31, 2018 and March 31, 2019.

Exercised options specify potential payments up to approximately $12.2 million for funding of post-marketing activities for oral TPOXX®.

Unexercised options provide for potential payments up to approximately $536.2 million in total (if all such options are exercised). There are options for the following activities: payments of up to $450.2 million for the delivery of up to approximately 1,452,300 courses of oral TPOXX® to the Strategic Stockpile; payments of up to $76.8 million for the manufacture of up to 192,000 courses of IV FDP, of which up to $30.7 million of payments would be paid upon the manufacture of IV BDS to be used in the manufacture of IV FDP; payments of up to approximately $3.6 million to fund post-marketing activities for IV TPOXX®; and payments of up to approximately $5.6 million for supportive procurement activities.

The options related to IV TPOXX® are divided into two primary manufacturing steps. There are options related to the manufacture of bulk drug substance (“IV BDS Options”), and there are corresponding options (for the same number of IV courses) for the manufacture of final drug product (“IV FDP Options”). BARDA may choose to exercise any, all, or none of these options in its sole discretion. The 2018 BARDA Contract includes: three separate IV BDS Options, each providing for the bulk drug substance equivalent of 64,000 courses of IV TPOXX®; and three separate IV FDP Options, each providing for 64,000 courses of final drug product of IV TPOXX®. BARDA has the sole discretion on whether to simultaneously exercise IV BDS Options and IV FDP Options, or whether to make independent exercise decisions. If BARDA decides to only exercise IV BDS Options, then the Company would receive payments up to $30.7 million; alternatively, if BARDA decides to exercise both IV BDS Options and IV FDP Options, then the Company would receive payments up to $76.8 million. For each set of options relating to a specific group of courses (for instance, the IV BDS and IV FDP options that reference the same 64,000 courses), BARDA has the option to independently purchase IV BDS or IV FDP.

2011 BARDA Contract

On May 13, 2011, the Company signed a contract with BARDA pursuant to which BARDA agreed to buy from the Company 1.7 million courses of oral TPOXX®. Additionally, the Company agreed to contribute to BARDA 300,000 courses at no additional cost to BARDA.

The contract with BARDA (as amended, modified, or supplemented from time to time, the “2011 BARDA Contract”) includes a base contract, as modified, (“2011 Base Contract”) as well as options. The 2011 Base Contract provides for approximately $508.7 million of payments, of which as of March 31, 2019, $459.8 million had been received by the Company for the manufacture and delivery of 1.7 million courses of oral TPOXX® and $44.3 million had been received for certain reimbursements in connection with development and supportive activities. Approximately $4.6 million remains eligible to be received in the future for reimbursements of development and supportive activities.

For courses of oral TPOXX® that were physically delivered to the Strategic Stockpile under the 2011 BARDA Contract, there are product replacement obligations, including: (i) a product replacement obligation in the event that the final version of oral TPOXX® approved by the FDA was different from any courses of oral TPOXX® that had been delivered to the Strategic Stockpile (the “FDA Approval Replacement Obligation”); (ii) a product replacement obligation, at no cost to BARDA, in the event that oral TPOXX® is recalled or deemed to be recalled for any reason; and (iii) a product replacement obligation in the event that oral TPOXX® does not meet any specified label claims. On July 13, 2018, the FDA approved oral TPOXX® for the treatment of smallpox and there is no difference between the approved product and courses in the Strategic Stockpile. As such, the possibility of the FDA Approval Replacement Obligation resulting in any future replacements of product within the Strategic Stockpile is remote.

The 2011 BARDA Contract includes options. On July 30, 2018, the 2011 BARDA Contract was modified and BARDA exercised its option relating to FDA approval of aforementioned 84-month expiry for oral TPOXX® for which the Company was paid $50.0 million in August 2018. With the option exercise, the 2011 BARDA Contract was modified so that the 2011 Base Contract increased by $50.0 million. Remaining options, if all were exercised by BARDA, would result in aggregate payments to the Company of

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$72.7 million, including up to $58.3 million of funding for development and supportive activities such as work on a post-exposure prophylaxis ("PEP") indication for TPOXX® and/or $14.4 million of funding for production-related activities related to warm-base manufacturing. BARDA may choose, in its sole discretion not to exercise any or all of the unexercised options.

The 2011 BARDA Contract expires in September 2020.

Research Agreements and Grants

The Company has an R&D program for IV TPOXX®. This program is funded by the 2018 BARDA Contract and a development contract with BARDA (“IV Formulation R&D Contract”). The IV Formulation R&D Contract has a period of performance that terminates on December 30, 2020. As of March 31, 2019, the IV Formulation R&D Contract provides for future aggregate research and development funding of approximately $5.2 million.

Contracts and grants include, among other things, options that may or may not be exercised at the U.S. Government’s discretion. Moreover, contracts and grants contain customary terms and conditions including the U.S. Government’s right to terminate or restructure a contract or grant for convenience at any time. As such, we may not be eligible to receive all available funds.

4.Inventory

Inventory includes costs related to the manufacture of TPOXX®. Inventory consisted of the following:

	As of
	March 31, 2019		December 31, 2018
Work in-process	$	1,948,856	$	1,950,445
Finished goods	68,221		957,765
Inventory	$	2,017,077	$	2,908,210

5.Property, Plant and Equipment

Property, plant and equipment consisted of the following: 

	As of
	March 31, 2019			December 31, 2018
Leasehold improvements	$	2,420,028		$	2,420,028
Computer equipment	581,654			618,248
Furniture and fixtures	377,859			377,859
Operating lease right-of-use asset	2,944,932			—
	6,324,473			3,416,135
Less - accumulated depreciation	(3,337,041		)	(3,244,861		)
Property, plant and equipment, net	$	2,987,432		$	171,274

Depreciation and amortization expense on property, plant, and equipment was $137,724 and $29,790 for the three months ended March 31, 2019 and 2018, respectively.

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6.Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	As of
	March 31, 2019		December 31, 2018
Bonus	$	764,059	$	2,600,839
Deferred revenue	5,437,774		4,159,946
Interest payable	1,003,911		35,567
Research and development vendor costs	628,565		1,446,410
Professional fees	497,276		242,043
Vacation	348,167		294,794
Other	1,277,984		869,318
Accrued expenses and other current liabilities	$	9,957,736	$	9,648,917

7.Financial Instruments

2016 Warrant

On September 2, 2016, in connection with the entry into the Loan Agreement (see Note 8 for additional information), the Company issued a warrant (the“Warrant”) to the Lender to purchase a number of shares of the Company’s common stock equal to$4.0 million divided by the lower of (i) $2.29 per share and (ii) the subscription price paid in connection with the Rights Offering. The Warrant provides for weighted average anti-dilution protection and is exercisable in whole or in part for ten (10) years from the date of issuance. The per share subscription price paid was $1.50 in connection with the Rights Offering; accordingly, the exercise price of the Warrant was set at $1.50 per share, and there were 2.7 million shares underlying the Warrant. Subsequent to partial exercises of the Warrant, there are approximately 1.5 million shares underlying the Warrant as of March 31, 2019.

The Company accounted for the Warrant in accordance with the authoritative guidance which requires that free-standing derivative financial instruments with certain anti-dilution and cash settlement features be classified as assets or liabilities at the time of the transaction, and recorded at their fair value. Any changes in the fair value of the derivative instruments are reported in earnings or loss as long as the derivative contracts are classified as assets or liabilities. Accordingly, the Company classified the Warrant as a liability and reports the change in fair value in the statement of operations.

As of March 31, 2019, the fair value of the Warrant was $8.1 million. The fair value of the liability-classified Warrant was calculated using the following assumptions: risk free interest rate of 2.33%; no dividend yield; an expected life of 7.42 years; and a volatility factor of 70%.

For the three months ended March 31, 2019 and 2018, the Company recorded a gain of $3.1 million and a loss of $3.3 million, respectively, as a result of the change in fair value of the liability-classified Warrant.

8. Debt

On September 2, 2016, the Company entered into a loan and security agreement (as amended from time to time, the “Loan Agreement”) with OCM Strategic Credit SIGTEC Holdings, LLC (“Lender”), pursuant to which the Company received $80.0 million (less fees and other items) on November 16, 2016 having satisfied certain pre-conditions. Such $80.0 million had been placed in an escrow account on September 30, 2016 (the “Escrow Funding Date”). Prior to the Escrow Release Date (November 16, 2016), the Company did not have access to, or any ownership interest in, the escrow account. Until the Escrow Release Date occurred, the Company did not have an obligation to make any payments under the Loan Agreement, no security was granted under the Loan Agreement and no affirmative or negative covenants or events of default were effective under the Loan Agreement. Amounts were held in the escrow account until the satisfaction of certain conditions including the closing of the Rights Offering (see Note 7) on November 16, 2016. As part of the satisfaction of the PharmAthene claim, funds were released from the escrow account (the date on which such transfer occurred, the “Escrow Release Date”).

The Loan Agreement provides for a first-priority senior secured term loan facility in the aggregate principal amount of $80.0 million (the “Term Loan”), of which (i) $25.0 million was placed in a reserve account (the “Reserve Account”) only to be utilized to pay interest on the Term Loan as it becomes due; (ii) an additional $5.0 million was also placed in the Reserve Account and up

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to the full amount of such $5.0 million was eligible to be withdrawn after June 30, 2018 upon the satisfaction of certain conditions, provided that any of such amount is required to fund any interest to the extent any interest in excess of the aforementioned $25.0 million is due and owing and any of such $5.0 million remains in the Reserve Account; and (iii) $50.0 million (net of fees and expenses then due and owing to the Lender) was paid as part of the final payment to satisfy a litigation claim. Interest on the Term Loan is at a per annum rate equal to the Adjusted LIBOR rate plus 11.5%, subject to adjustments as set forth in the Loan Agreement. At March 31, 2019, the effective interest rate on the Term Loan, which includes interest payments and accretion of unamortized costs and fees, was 19.4%. The Company incurred approximately $3.9 million of interest expense during the three months ended March 31, 2019, of which $1.1 million accreted to the Term Loan balance. On July 12, 2018, upon confirmation that there had been no events of default, $5 million was withdrawn by the Company from the Reserve Account and was placed in the Company's cash operating account. On October 31, 2018, the Loan Agreement was amended to expand the definition of permitted dispositions to include a sale of the PRV. In connection with the amendment, net cash proceeds from the sale of the PRV ($78.3 million) were placed in a restricted cash account; such restricted account is to be used only for interest, fees and principal payments (other than those in connection with an event of default) related to the Term Loan.

The Term Loan shall mature on the earliest to occur of (i) the four-year anniversary of the Escrow Release Date, and (ii) the acceleration of certain obligations pursuant to the Loan Agreement. At maturity, $80.0 million of principal will be repaid, and an additional $4.0 million will be paid (see below). Prior to maturity, there are no scheduled principal payments.

Through the three and one-half year anniversary of the Escrow Release Date, any prepayment of the Term Loan is subject to a make-whole provision in which interest payments related to the prepaid amount are due (subject to a discount of treasury rate plus 0.50%).

In connection with the Term Loan, the Company has granted the Lender a lien on and security interest in all of the Company’s right, title and interest in substantially all of the Company’s tangible and intangible assets, including all intellectual property.

The Loan Agreement contains customary representations and warranties and customary affirmative and negative covenants. These covenants, among other things, require a minimum cash balance throughout the term of the Term Loan and the achievement of regulatory milestones by certain dates, and contain certain limitations on the ability of the Company to incur unreimbursed research and development expenditures over a certain threshold, make capital expenditures over a certain threshold, incur indebtedness, dispose of assets outside of the ordinary course of business, make cash distributions and enter into certain merger or consolidation transactions. The minimum cash requirement was $5.0 million until August 27, 2018 (45 days after FDA approval of oral TPOXX®), at which point the minimum cash requirement became $20.0 million.

The Loan Agreement includes customary events of default, including, among others: (i) non-payment of amounts due thereunder, (ii) the material inaccuracy of representations or warranties made thereunder, (iii) non-compliance with covenants thereunder, (iv) non-payment of amounts due under, or the acceleration of, other material indebtedness of the Company and (v) bankruptcy or insolvency events. Upon the occurrence and during the continuance of an event of default under the Loan Agreement, the interest rate may increase by 2.00% per annum above the rate of interest otherwise in effect, and the Lenders would be entitled to accelerate the maturity of the Company’s outstanding obligations thereunder.

As of March 31, 2019, the Company is in compliance with the Loan Agreement covenants.

In connection with the Loan Agreement, the Company incurred $8.2 million of costs (including interest on amounts held in the escrow account between September 30, 2016 and November 15, 2016). Furthermore, an additional $4.0 million will become payable when principal of the Term Loan is repaid. As part of the Company's entry into the Loan Agreement, the Company issued the Warrant (see Note 7) with a fair market value of $5.8 million. The fair value of the Warrant, as well as costs related to the Term Loan issuance, were recorded as deductions to the Term Loan balance on the Balance Sheet. These amounts are being amortized on a straight-line basis over the life of the related Term Loan. The Company compared the amortization under the effective interest method with the straight-line basis and determined the results were not materially different. The $4.0 million that will be paid when principal is repaid is being accreted to the Term Loan balance. As of March 31, 2019, the Term Loan balance is $76.7 million.

9.Fair Value of Financial Instruments

The carrying value of cash equivalents, restricted cash, accounts receivable, accounts payable and accrued expenses and other current liabilities approximates fair value due to the relatively short maturity of these instruments. Common stock warrants which are classified as a liability are recorded at their fair market value as of each reporting period.

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The measurement of fair value requires the use of techniques based on observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumptions. The inputs create the following fair value hierarchy:

• Level 1 – Quoted prices for identical instruments in active markets.

• Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations where inputs are observable or where significant value drivers are observable.

• Level 3 – Instruments where significant value drivers are unobservable to third parties.

The Company uses model-derived valuations where certain inputs are unobservable to third parties to determine the fair value of certain common stock warrants on a recurring basis and classifies such liability-classified warrants in Level 3. As described in Note 7, the fair value of the liability classified warrant was $8.1 million at March 31, 2019.

At March 31, 2019, the fair value of the debt was $87.5 million and the carrying value of the debt was $76.7 million. The Company used a discounted cash flow model to estimate the fair value of the debt by applying a discount rate to future payments expected to be made as set forth in the Loan Agreement.  The fair value of the loan was measured using Level 3 inputs.  The discount rate was determined using market participant assumptions.

There were no transfers between levels of the fair value hierarchy for the three months ended March 31, 2019. In addition, there were no Level 1 or Level 2 financial instruments as of March 31, 2019 and December 31, 2018.

The following table presents changes in the liability-classified warrant measured at fair value using Level 3 inputs:

	Fair Value Measurements of Level 3 liability-classified warrant
Warrant liability at December 31, 2018	$	12,380,939
Decrease in fair value of warrant liability	(3,136,265		)
Exercise of warrants	(1,172,801		)
Warrant liability at March 31, 2019	$	8,071,873

10.Per Share Data

The Company computes, presents and discloses earnings per share in accordance with the authoritative guidance which specifies the computation, presentation and disclosure requirements for earnings per share of entities with publicly held common stock or potential common stock. The objective of basic EPS is to measure the performance of an entity over the reporting period by dividing income (loss) by the weighted average shares outstanding. The objective of diluted EPS is consistent with that of basic EPS, except that it also gives effect to all potentially dilutive common shares outstanding during the period.

The following is a reconciliation of the basic and diluted earnings (loss) per share computation: 

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	Three months ended March 31,
	2019			2018
Net income (loss) for basic earnings per share	$	1,629,777		$	(11,582,256	)
Less: Change in fair value of warrants	(3,136,265		)	—
Net loss, adjusted for change in fair value of warrants for diluted earnings per share	$	(1,506,488	)	$	(11,582,256	)
Weighted-average shares	80,913,320			79,039,000
Effect of potential common shares	1,225,788			—
Weighted-average shares: diluted	82,139,108			79,039,000
Earnings (loss) per share: basic	$	0.02		$	(0.15	)
Loss per share: diluted	$	(0.02	)	$	(0.15	)

For the three months ended March 31, 2019, the diluted earnings per share calculation reflects the effect of the assumed exercise of outstanding warrants and any corresponding elimination of the impact included in operating results from the change in fair value of the warrants. Weighted-average diluted shares include the dilutive effect of warrants. The dilutive effect of warrants is calculated based on the average share price for each fiscal period using the treasury stock method.

The Company incurred losses adjusted for the change in the fair value of warrants for the three months ended March 31, 2019 and 2018 and as a result, the equity instruments listed below were excluded from the calculation of diluted earnings (loss) per share as the effect of the exercise, conversion or vesting of such instruments would be anti-dilutive. The weighted average number of equity instruments excluded consisted of:

	Three months ended March 31,
	2019	2018
Stock Options	377,011	1,062,467
Stock-Settled Stock Appreciation Rights	6,756	162,393
Restricted Stock Units (1)	509,411	1,472,001
Warrants	—	2,690,950

(1) Includes as of March 31, 2018, 294,118 restricted stock units that had vested but not converted into common stock. As of March 31, 2019, all equity instruments are unvested.

The appreciation of each stock-settled stock appreciation right was capped at a determined maximum value. As a result, the weighted average number shown in the table above for stock-settled stock appreciation rights reflects the weighted average maximum number of shares that could be issued.

11. Commitments and Contingencies

From time to time, we may be involved in a variety of claims, suits, investigations and proceedings arising from the ordinary course of our business, collections claims, breach of contract claims, labor and employment claims, tax and other matters. Although such claims, suits, investigations and proceedings are inherently uncertain and their results cannot be predicted with certainty, we believe that the resolution of such current pending matters, if any, will not have a material adverse effect on our business, consolidated financial position, results of operations or cash flow. Regardless of the outcome, litigation can have an adverse impact on us because of legal costs, diversion of management resources and other factors.

12.Related Party Transactions

Board of Directors and Outside Counsel

A member of the Company’s Board of Directors is a member of the Company’s outside counsel. During the three months ended March 31, 2019 and 2018, the Company incurred expenses of $113,000 and $107,000, respectively, related to services provided

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by the outside counsel. On March 31, 2019 the Company’s outstanding payables and accrued expenses included an approximate $39,000 liability to the outside counsel.

Board of Directors-Consulting Agreement

On October 13, 2018, the Company, entered into a consulting agreement with Dr. Eric A. Rose, a member, and former Executive Chairman, of the Company’s Board of Directors. Under the agreement, the consulting services will include assisting the Company on expanded indications for TPOXX® and other business development opportunities as requested by the Company. The term of the agreement is for two years, with compensation for such services at an annual rate of $200,000. During the three months ended March 31, 2019, the Company incurred $50,000 related to services under this agreement. As of March 31, 2019, the Company’s outstanding payables and accrued expenses included a $50,000 liability associated with this agreement.

Real Estate Leases

On May 26, 2017 the Company and MacAndrews & Forbes Incorporated (“M&F”) entered into a ten-year Office Lease agreement (the “New HQ Lease”), pursuant to which the Company agreed to lease 3,200 square feet at 31 East 62^nd Street, New York, New York. The Company is utilizing premises leased under the New HQ Lease as its new corporate headquarters. The Company's rental obligations consist of a fixed rent of $25,333 per month in the first sixty-three months of the term, subject to a rent abatement for the first six months of the term. From the first day of the sixty-fourth month of the term through the expiration or earlier termination of the lease, the Company's rental obligations consist of a fixed rent of $29,333 per month. In addition to the fixed rent, the Company will pay a facility fee in consideration of the landlord making available certain ancillary services, commencing on the first anniversary of entry into the lease. The facility fee will be $3,333 per month for the second year of the term and increasing by five percent each year thereafter, to $4,925 per month in the final year of the term.

On July 31, 2017, the Company and M&F entered into a Termination of Sublease Agreement (the “Old HQ Sublease Termination Agreement”), pursuant to which the Company and M&F agreed to terminate the sublease dated January 9, 2013 for 6,676 square feet of rental square footage located at 660 Madison Avenue, Suite 1700, New York, New York (such sublease being the “Old HQ Sublease” and the location being the “Old HQ”).

Effectiveness of the Old HQ Sublease Termination Agreement was conditioned upon the commencement of a sublease for the Old HQ between M&F and a new subtenant (the “Replacement M&F Sublease”), which occurred on August 2, 2017. The Old HQ Sublease Termination Agreement obligates the Company to pay, on a monthly basis, an amount equal to the discrepancy (the “Rent Discrepancy”) between the sum of certain operating expenses and taxes (“Additional Rent”) and fixed rent under the overlease between M&F and the landlord at 660 Madison Avenue and the sum of Additional Rent and fixed rent under the Replacement M&F Sublease. Under the Old HQ Sublease Termination Agreement, the Company and M&F release each other from any liability under the Old HQ Sublease.

Under the Old HQ Sublease, the Company was obligated to pay fixed rent of approximately $60,000 per month until August 2018 and approximately $63,400 per month thereafter until the Old HQ Sublease expiration date of August 31, 2020. Additionally, the Company was obligated to pay certain operating expenses and taxes ("Additional Rent"), such Additional Rent being specified in the overlease between M&F and the landlord at 660 Madison Avenue (the "Old HQ Overlease").

Under the Replacement M&F Sublease, the subtenant’s rental obligations were excused for the first two (2) months of the lease term (“Rent Concession Period”). Thereafter, the subtenant was obligated to pay fixed rent of $36,996 per month for the first twelve (12) months, and is obligated to pay $37,831 per month for the next 12 months, and $38,665 per month until the scheduled expiration of the Replacement M&F Sublease on August 24, 2020. In addition to fixed rent, the subtenant is also obligated to pay, pursuant to the Replacement M&F Sublease, a portion of the Additional Rent specified in the Old HQ Overlease.

For the time period between August 2, 2017 and August 31, 2020 (the expiration date of the Old HQ Sublease), the Company estimates that it will pay a total of approximately $0.9 million combined in fixed rent and additional amounts payable under the New HQ Lease and a total of approximately $1.1 million in Rent Discrepancy under the Old HQ Sublease Termination Agreement, for a cumulative total of $2.0 million. In contrast, fixed rent and estimated Additional Rent under the Old HQ Sublease, for the aforementioned time period, would have been a total of approximately $2.4 million if each of the New HQ Lease, Replacement M&F Sublease and Old HQ Sublease Termination Agreement had not been entered into by each of the parties thereto. Because amounts such as operating expenses and taxes may vary, the foregoing totals can only be estimated at this time and are subject to change.

As a result of the above-mentioned transactions, the Company discontinued usage of Old HQ in the third quarter of 2017. As such, during the year ended December 31, 2017 the Company recorded a loss of approximately $1.1 million in accordance with Accounting Standards Codification (“ASC”) 420, Exit or Disposal Obligations. This loss primarily represented the discounted

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value of estimated Rent Discrepancy payments to occur in the future, and included costs related to the termination of the old HQ Sublease. The Company also wrote-off approximately $0.1 million of leasehold improvements and furniture and fixtures related to the Old HQ.

The following table summarizes activity relating to the liability that was recorded as a result of the lease termination:

	Lease Termination liability
Balance at December 31, 2018	$	509,937
Charges (included in selling, general and administrative expenses)	9,189
Cash payments, net of sublease income	(87,875		)
Balance at March 31, 2019	$	431,251

As of March 31, 2019, approximately $0.1 million of the lease termination liability is included in Other liabilities on the condensed consolidated balance sheet with the remainder included in Accrued expenses and other current liabilities.

13.Income Taxes

The Company’s provision for income taxes consists of federal and state taxes, as applicable, in amounts necessary to align the Company’s year-to-date tax provision with the effective rate that it expects to achieve for the full year. Each quarter the Company updates its estimate of the annual effective tax rate and records cumulative adjustments as necessary.

The effective tax rate of 23.70% for the three months ended March 31, 2019 differs from the statutory rate of 21.00% primarily as a result of non-deductible executive compensation under IRC Section 162(m) and a non-taxable adjustment for the fair market value of the Warrant. The effective tax rate of 0.02% for the three months ended March 31, 2018 differs from the statutory rate of 21.00% as no income tax benefit was recorded for operating losses due to the Company's assessment regarding tax realizability of its deferred tax assets.

14. Equity

The tables below present changes in stockholder's equity for the three months ended March 31, 2019 and 2018.

	Common Stock					Additional Paid-in Capital			Accumulated Deficit			Other Comprehensive Income		Total Stockholders' Equity
	Shares		Amount
Balances at December 31, 2018	80,763,350		$	8,076		$	218,697,872		$	(115,791,261	)	$	—	$	102,914,687
Net income									1,629,777					1,629,777
Issuance of common stock upon exercise of stock options	9,769		1			(1		)						—
Issuance of common stock upon exercise of stock-settled appreciation rights	16,771		2			(2		)						—
Issuance of common stock upon exercise of warrants	159,782		16			1,172,785								1,172,801
Payment of common stock tendered for employee stock-based compensation tax obligations	(8,148	)	(1		)	(56,589		)						(56,590		)
Stock-based compensation	—		—			408,894								408,894
Balances at March 31, 2019	80,941,524		$	8,094		$	220,222,959		$	(114,161,484	)	$	—	$	106,069,569

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	Common Stock			Additional Paid-in Capital		Accumulated Deficit			Other Comprehensive Income		Total Stockholders' Deficiency
	Shares	Amount
Balances at December 31, 2017	79,039,000	$	7,904	$	214,229,581	$	(537,375,776	)	$	—	$	(323,138,291	)
Net loss	—	—		—		(11,582,256		)	—		(11,582,256		)
Cumulative effect of accounting change	—	—		—		(223,313		)	—		(223,313		)
Stock-based compensation	—	—		327,360		—			—		327,360
Balances at March 31, 2018	79,039,000	$	7,904	$	214,556,941	$	(549,181,345	)	$	—	$	(334,616,500	)

15. Leases

The Company leases its Corvallis, Oregon, facilities and office space under an operating lease which was signed on November 3, 2017 and commenced on January 1, 2018. The initial term of this lease expires December 31, 2019 after which the Company has two successive renewal options; one for two years and the other for three years. On May 26, 2017 the Company and M&F entered into a ten-year office lease agreement (the “New HQ Lease”), pursuant to which the Company agreed to lease 3,200 square feet in New York, New York. The Company is utilizing premises leased under the New HQ Lease as its corporate headquarters. The Company has no leases that qualify as finance leases.

Operating lease costs totaled $0.1 million and $0.1 million for the three months ended March 31, 2019 and 2018, respectively. Cash paid for amounts included in the measurement of lease liabilities from operating cash flows were $0.1 million and $0.1 million for the three months ended March 31, 2019 and 2018, respectively. As of March 31, 2019, the weighted-average remaining lease term of the Company’s operating leases was 6.81 years while the weighted-average discount rate was 4.53%.

Future undiscounted cash flows under operating leases as of March 31, 2019 are expected to be as follows:

2019	$	438,618
2020	591,108
2021	600,362
2022	368,467
2023	402,078
Thereafter	1,387,139
Total undiscounted cash flows under leases	3,787,772
Less: Imputed interest	(587,491		)
Present value of lease liabilities	$	3,200,281

As of March 31, 2019, approximately $2.8 million of the lease liability is included in Other liabilities on the condensed consolidated balance sheet with the remainder in accrued expenses.

As previously disclosed in the Company's 2018 Annual Report on Form 10-K and under ASC 840, Leases, the predecessor to ASC 842, future minimum lease payments for operating leases having initial or remaining noncancellable lease terms in excess of one year would have been as follows:

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2019	$	541,376
2020	304,000
2021	304,000
2022	320,774
2023	352,000
Thereafter	1,197,778
Total	$	3,019,928

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

The following discussion should be read in conjunction with our condensed consolidated financial statements and notes to those statements and other financial information appearing elsewhere in this Quarterly Report on Form 10-Q. In addition to historical information, the following discussion and other parts of this Quarterly Report contain forward-looking information that involves risks and uncertainties.

Overview

We are a commercial-stage pharmaceutical company focused on the health security market. Health security comprises countermeasures for biological, chemical, radiological and nuclear attacks (biodefense market), vaccines and therapies for emerging infectious diseases, and health preparedness. Our lead product is an oral formulation of TPOXX® (“oral TPOXX®”), an antiviral drug for the treatment of human smallpox disease caused by variola virus.

BARDA Contracts-TPOXX®

2018 BARDA Contract

On September 10, 2018, the Company entered into a contract with the U.S. Biomedical Advanced Research and Development Authority (“BARDA”) pursuant to which SIGA agreed to deliver up to 1,488,000 courses of oral TPOXX® to the U.S. Strategic National Stockpile ("Strategic Stockpile"), and to manufacture and deliver to the Strategic Stockpile, or store as vendor-managed inventory, up to 212,000 courses of the intravenous (IV) formulation of TPOXX® ("IV TPOXX®"). Additionally, the contract includes funding from BARDA for advanced development of IV TPOXX®, post-marketing activities for oral and IV TPOXX®, and supportive procurement activities. The contract with BARDA (as amended, modified, or supplemented from time to time, the “2018 BARDA Contract”) currently contemplates, as of April 30, 2019, up to approximately $600.1 million of payments, of which approximately $51.7 million of payments are included within the base period of performance of five years, approximately $12.2 million of payments are related to exercised options and up to approximately $536.2 million of payments are currently classified as unexercised options. BARDA may choose in its sole discretion when, or whether, to exercise any of the unexercised options. The period of performance for options is up to ten years from the date of entry into the 2018 BARDA Contract and such options could be exercised at any time during the contract term, including during the base period of performance.

The base period of performance provides for potential payments of approximately $51.7 million for the following activities: payments of approximately $11.1 million for the delivery of approximately 35,700 courses of oral TPOXX® to the Strategic Stockpile; payments of $8.0 million for the manufacture of 20,000 courses of final drug product of IV TPOXX® ("IV FDP"), of which $3.2 million of payments are related to the manufacture of bulk drug substance ("IV BDS") to be used in the manufacture of IV FDP; payments of approximately $32.0 million to fund advanced development of IV TPOXX®; and payments of approximately $0.6 million for supportive procurement activities. As of March 31, 2019, the Company had received $7.1 million for the first quarter 2019 delivery of approximately 23,000 courses of oral TPOXX® to the Strategic Stockpile and $3.2 million for the 2018 manufacture of IV BDS. IV BDS is expected to be used for the manufacture of 20,000 courses of IV FDP. The $3.2 million received for the manufacture of IV BDS has been recorded as deferred revenue as of December 31, 2018 and March 31, 2019.

Exercised options specify potential payments up to approximately $12.2 million for funding of post-marketing activities for oral TPOXX®.

Unexercised options provide for potential payments up to approximately $536.2 million in total (if all such options are exercised). There are options for the following activities: payments of up to $450.2 million for the delivery of up to approximately 1,452,300 courses of oral TPOXX® to the Strategic Stockpile; payments of up to $76.8 million for the manufacture of up to 192,000 courses of IV FDP, of which up to $30.7 million of payments would be paid upon the manufacture of IV BDS to be used in the manufacture of IV FDP; payments of up to approximately $3.6 million to fund post-marketing activities for IV TPOXX®; and payments of up to approximately $5.6 million for supportive procurement activities.

The options related to IV TPOXX® are divided into two primary manufacturing steps. There are options related to the manufacture of bulk drug substance (“IV BDS Options”), and there are corresponding options (for the same number of IV courses) for the manufacture of final drug product (“IV FDP Options”). BARDA may choose to exercise any, all, or none of these options in its sole discretion. The 2018 BARDA Contract includes: three separate IV BDS Options, each providing for the bulk drug substance equivalent of 64,000 courses of IV TPOXX®; and three separate IV FDP Options, each providing for 64,000 courses of final drug product of IV TPOXX®. BARDA has the sole discretion on whether to simultaneously exercise IV BDS Options and IV FDP

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Options, or whether to make independent exercise decisions. If BARDA decides to only exercise IV BDS Options, then the Company would receive payments up to $30.7 million; alternatively, if BARDA decides to exercise both IV BDS Options and IV FDP Options, then the Company would receive payments up to $76.8 million. For each set of options relating to a specific group of courses (for instance, the IV BDS and IV FDP options that reference the same 64,000 courses), BARDA has the option to independently purchase IV BDS or IV FDP.

Critical Accounting Estimates

The methods, estimates and judgments we use in applying our accounting policies have a significant impact on the results we report in our condensed consolidated financial statements, which we discuss under the heading “Results of Operations” following this section of our Management’s Discussion and Analysis of Financial Condition and Results of Operations. Some of our accounting policies require us to make difficult and subjective judgments, often as a result of the need to make estimates of matters that are inherently uncertain. Information regarding our critical accounting policies and estimates appear in Item 7, Management's Discussion and Analysis of Financial Condition and Results of Operations of our Annual Report on Form 10-K for the year ended December 31, 2018 as filed on March 5, 2019. Our most critical accounting estimates include the valuation of stock-based awards including options and warrants granted or issued by the Company, revenue recognition and income taxes.

Results of Operations

Three months ended March 31, 2019 and 2018

Revenues from product sales and supportive services for the three months ended March 31, 2019 were $7.1 million. In 2018, there were no recorded revenues from product sales and supportive services. Such revenues in 2019 are associated with the delivery of approximately 23,000 courses of oral TPOXX® to the Strategic Stockpile under the 2018 BARDA Contract.

Revenues from research and development activities for the three months ended March 31, 2019 and 2018, were $3.3 million and $1.7 million, respectively. The increase in revenue of approximately $1.6 million, or 90%, primarily reflects an increase in revenues from our federal contracts supporting the development of IV TPOXX®. Revenue in connection with the development of IV TPOXX® has increased because the scope and cost of development activities related to IV TPOXX® have increased.

Cost of sales and supportive services for the three months ended March 31, 2019, were $0.9 million; in 2018, there were no recorded cost of sales and supportive services. Such costs in 2019 are associated with the delivery of approximately 23,000 courses of oral TPOXX® during the three months ended March 31, 2019.

Selling, General and Administrative (“SG&A”) expenses for the three months ended March 31, 2019 and 2018, were $3.2 million and $3.1 million, respectively, reflecting an increase of approximately $0.1 million, or 4%. The increase is primarily attributable to an approximate $0.1 million increase in employee compensation expense and an approximate $0.1 million increase in professional service fees. Such increases were partially offset by non-recurring costs related to the application for listing our stock on The Nasdaq Global Market.

Research and Development (“R&D”) expenses for the three months ended March 31, 2019 and 2018 were $4.0 million and $3.0 million, respectively, reflecting an increase of approximately $1.0 million, or 33%. The increase is primarily attributable to a $1.4 million increase in direct vendor-related expenses supporting the development of IV TPOXX®, partially offset by a decrease in direct vendor-related expenses in connection with oral TPOXX® development. The increase in IV TPOXX® expenses is related to an increase in the scope and cost of development activities.

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Patent expenses for the three months ended March 31, 2019 and 2018 were $0.2 million and $0.2 million, respectively. These expenses reflect our ongoing efforts to protect our lead drug candidates in various geographic territories.

Interest expense for the three months ended March 31, 2019 and 2018 was $3.9 million and $3.7 million, respectively. The $3.9 million of interest for the three months ended March 31, 2019 includes $1.1 million of accretion of unamortized costs and fees related to the Term Loan balance.

Changes in the fair value of the liability-classified warrant to acquire common stock were recorded within the income statement. For the three months ended March 31, 2019, we recorded a gain of approximately $3.1 million reflecting a decrease in the fair value of the liability-classified warrant primarily due to the decrease in our stock price. For the three months ended March 31, 2018, we recorded a loss of approximately $3.3 million reflecting an increase in fair value of the liability-classified warrant primarily due to the increase in our stock price.

Other income of $0.7 million for the three months ended March 31, 2019 reflects interest income on the Company's cash balance held in restricted and unrestricted accounts.

For the three months ended March 31, 2019 and 2018, we incurred pre-tax income/(loss) of $2.1 million and $(11.6) million, respectively, and a corresponding income tax (expense)/benefit of $(0.5) million and $2,352, respectively. The effective tax rate during the three months ended March 31, 2019 and 2018 was 23.7% and 0.02%, respectively. Our effective tax rate for the period ended March 31, 2019 differs from the statutory rate primarily as a result of non-deductible executive compensation under IRC Section 162(m) and a non-taxable adjustment for the fair market value of the warrant. Our effective tax rate for the period ended March 31, 2018 differs from the statutory rate as no income tax benefit was recorded for current year operating losses due to the Company’s assessment regarding tax realizability of its deferred tax assets.

Liquidity and Capital Resources

As of March 31, 2019, we had $102.1 million in cash and cash equivalents compared with $100.7 million at December 31, 2018. Additionally, as of March 31, 2019, we had $78.3 million of restricted cash compared with $79.7 million at December 31, 2018. The restricted cash is available to pay interest, fees and principal related to the Term Loan.

Operating Activities

We prepare our condensed consolidated statement of cash flows using the indirect method. Under this method, we reconcile net income (loss) to cash flows from operating activities by adjusting net income (loss) for those items that impact net income (loss) but may not result in actual cash receipts or payments during the period. These reconciling items include but are not limited to stock-based compensation, deferred income taxes, non-cash interest expense and changes in the fair value of our warrant liability; gains and losses from various transactions and changes in the condensed consolidated balance sheet for working capital from the beginning to the end of the period.

Net cash provided by (used in) operations for the three months ended March 31, 2019 and 2018 was less than $0.1 million and $(8.6) million, respectively.  For the three months ended March 31, 2019, we received approximately $7.1 million from BARDA for product delivery. This receipt was largely offset by net operating costs and approximately $2.8 million of cash interest expense on the Term Loan. For the three months ended March 31, 2018, cash usage was primarily due to $6.8 million of cash operating expenses (net loss adjusted for non-cash items noted in the cash flow statement such as non-cash interest expense and the change in the fair value of our warrant).

Investing Activities

For the three months ended March 31, 2019 there was a cash usage of $8,951 related to capital expenditures. There was no investing-related cash flow activity for the three months ended March 31, 2018.

Financing Activities

Net cash used by financing activities for the three months ended March 31, 2019 was $56,590, which is attributable to the payment of tax obligations for employee common stock tendered. There was no financing-related cash flow activity for the three months ended March 31, 2018.

Off-Balance Sheet Arrangements

The Company does not have any off-balance sheet arrangements.

Recently Issued Accounting Standards

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For discussion regarding the impact of accounting standards that were recently issued but not yet effective, on the Company's condensed consolidated financial statements, as well as those standards that were adopted, see Note 2, Summary of Significant Accounting Policies, of Notes to Condensed Consolidated Financial Statements.

Safe Harbor Statement

Certain statements in this Quarterly Report on Form 10-Q, including certain statements contained in “Business” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” constitute “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, including statements relating to the progress of SIGA’s development programs and timelines for bringing products to market, delivering products to the U.S Strategic National Stockpile and the enforceability of the 2011 BARDA Contract and the 2018 BARDA Contract (each as defined previously, and collectively, the "BARDA Contracts") with the BARDA. The words or phrases “can be,” “expects,” “may affect,” “may depend,” “believes,” “estimate,” “project” and similar words and phrases are intended to identify such forward-looking statements. Such forward-looking statements are subject to various known and unknown risks and uncertainties and SIGA cautions you that any forward-looking information provided by or on behalf of SIGA is not a guarantee of future performance. SIGA’s actual results could differ materially from those anticipated by such forward-looking statements due to a number of factors, some of which are beyond SIGA’s control, including, but not limited to, (i) the risk that BARDA elects, in its sole discretion as permitted under the BARDA Contracts, not to exercise all, or any, of the remaining unexercised options under those contracts, (ii) the risk that SIGA may not complete performance under the BARDA Contracts on schedule or in accordance with contractual terms, (iii) the risk that the BARDA Contracts are modified or canceled at the request or requirement of the U.S. government, (iv) the risk that the nascent international biodefense market does not develop to a degree that allows SIGA to successfully market TPOXX® internationally, (v) the risk that potential products, including the IV formulation of TPOXX®, or potential alternative uses of TPOXX® that appear promising to SIGA or its collaborators, cannot be shown to be efficacious or safe in subsequent pre-clinical or clinical trials, (vi) the risk that SIGA or its collaborators will not obtain appropriate or necessary governmental approvals to market these or other potential products or uses, (vii) the risk that SIGA may not be able to secure or enforce sufficient legal rights in its products, including intellectual property protection, (viii) the risk that any challenge to SIGA’s patent and other property rights, if adversely determined, could affect SIGA’s business and, even if determined favorably, could be costly, (ix) the risk that regulatory requirements applicable to SIGA’s products may result in the need for further or additional testing or documentation that will delay or prevent seeking or obtaining needed approvals to market these products, (x) the risk that SIGA’s internal controls will not be effective in detecting or preventing a misstatement in SIGA’s financial statements, (xi) the risk that the volatile and competitive nature of the biotechnology industry may hamper SIGA’s efforts to develop or market its products, (xii) the risk that changes in domestic or foreign economic and market conditions may affect SIGA’s ability to advance its research or may affect its products adversely, (xiii) the effect of federal, state, and foreign regulation, including drug regulation and international trade regulation, on SIGA’s businesses and (xiv) the risk that the U.S. government’s responses (including inaction) to the national or global economic situation may affect SIGA’s business adversely, as well as the risks and uncertainties included in Item 1A “Risk Factors” on Form 10-K for the fiscal year ended December 31, 2018. All such forward-looking statements are current only as of the date on which such statements were made. SIGA does not undertake any obligation to update publicly any forward-looking statement to reflect events or circumstances after the date on which any such statement is made or to reflect the occurrence of unanticipated events.

More detailed information about SIGA and risk factors that may affect the realization of forward-looking statements, including the forward-looking statements in the presentation, is set forth in SIGA's filings with the Securities and Exchange Commission, including this Quarterly Report on Form 10-Q and SIGA's Annual Report on Form 10-K for the fiscal year ended December 31, 2018, and in other documents that SIGA has filed with the SEC. SIGA urges investors and security holders to read those documents free of charge at the SEC's Web site at http://www.sec.gov. Forward-looking statements are current only as of the date on which such statements were made, and except for our ongoing obligations under the United States of America federal securities laws, we undertake no obligation to update publicly any forward-looking statements whether as a result of new information, future events, or otherwise.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Our investment portfolio includes cash and cash equivalents. Our main investment objectives are the preservation of investment capital. We believe that our investment policy is conservative, both in the duration of our investments and the credit quality of the investments we hold. We do not utilize derivative financial instruments, derivative commodity instruments or other market risk sensitive instruments, positions or transactions to manage exposure to interest rate changes. As such, we believe that, the securities we hold are subject to market risk, changes in the financial standing of the issuer of such securities and our interest income is sensitive to changes in the general level of U.S. interest rates. Additionally, we are also subject to the risk of rising LIBOR rates; whenever the minimum rates for one-month, two-month, three-month and six-month LIBOR rates (“minimum LIBOR rate”) are above 1%, then the interest rate charged on the Term Loan could increase materially depending on the magnitude

21

of any increase in LIBOR rates. For every increase of 0.5% in the minimum LIBOR rate (e.g., an increase from a LIBOR rate of 2.50% to 3.00%), annual interest payments on the Term Loan would increase by approximately $0.4 million. Furthermore, we are subject to the impact of stock price fluctuations of our common stock in that we have a liability-classified warrant in which 1.5 million shares of SIGA common stock can be purchased at a strike price of $1.50 per share. For every $1 increase in the stock price of SIGA, the intrinsic value of the liability-classified warrant will increase by approximately $1.5 million.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures as of March 31, 2019. The term “disclosure controls and procedures” is defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934. Management recognizes that any disclosure controls and procedures no matter how well designed and operated, can only provide reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

Based on that evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective as of March 31, 2019 at a reasonable level of assurance.

Changes in Internal Control over Financial Reporting

There have been no changes in our internal control over financial reporting during the quarter ended March 31, 2019 that materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. 

22

PART II-OTHER INFORMATION

Item 1.Legal Proceedings

From time to time, we may be involved in a variety of claims, suits, investigations and proceedings arising from the ordinary course of our business, collections claims, breach of contract claims, labor and employment claims, tax and other matters. Although such claims, suits, investigations and proceedings are inherently uncertain and their results cannot be predicted with certainty, we believe that the resolution of such current pending matters, if any, will not have a material adverse effect on our business, condensed consolidated financial position, results of operations or cash flow. Regardless of the outcome, litigation can have an adverse impact on us because of legal costs, diversion of management resources and other factors.

Item 1A. Risk Factors

Our results of operations and financial condition are subject to numerous risks and uncertainties described in our 2018 Annual Report on Form 10-K for the fiscal year ended December 31, 2018.

Item 2. Unregistered Sale of Equity Securities and Use of Proceeds

On January 19, 2019, the Company issued 201,821 shares of its common stock to an investor on a net basis upon the partial exercise of a warrant to purchase common stock of the Company. To exercise the warrant, the investor surrendered to the Company 42,039 shares of common stock otherwise issuable under the warrant in order to effect the partial warrant exercise. The exercise price of the warrant was $1.50 per share. Such shares were issued pursuant to the exemption from the registration requirements of the Securities Act provided by Section 4(2) of the Securities Act and/or Regulation D promulgated thereunder, and the issuance did not involve any underwriters, underwriting discounts or commissions, or any public offering. The purchaser is an accredited investor, and the Company issued the shares without any general solicitation or advertisement.

Item 3. Defaults upon Senior Securities

None.

Item 4.Mine Safety Disclosures

No disclosure is required pursuant to this item.

Item 5. Other Information

No disclosure is required pursuant to this item.

23

Item 6.Exhibits

Exhibit No.	Description
31.1	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1	Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2	Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema
101.CAL	XBRL Taxonomy Extension Calculation Linkbase
101.DEF	XBRL Taxonomy Extension Definition Linkbase
101.LAB	XBRL Taxonomy Extension Label Linkbase
101.PRE	XBRL Taxonomy Extension Presentation Linkbase

24

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.

		SIGA TECHNOLOGIES, INC.
		(Registrant)
Date:	May 2, 2019	By:	/s/ Daniel J. Luckshire
			Daniel J. Luckshire
			Executive Vice President and
			Chief Financial Officer
			(Principal Financial Officer and
			Principal Accounting Officer)

25

EX-31.1

Exhibit 31.1

Certification by Chief Executive Officer Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Phillip L. Gomez, Ph.D., certify that:

1. I have reviewed this quarterly report on Form 10-Q of SIGA Technologies, 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 this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

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

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

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

Date: May 2, 2019

/s/ Phillip L. Gomez, Ph.D.

Phillip L. Gomez, Ph.D.

Chief Executive Officer

EX-31.2

Exhibit 31.2

Certification by Chief Financial Officer Pursuant to

Section 302 of the Sarbanes-Oxley Act of 2002

I, Daniel J. Luckshire, certify that:

1. I have reviewed this quarterly report on Form 10-Q of SIGA Technologies, 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 this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

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

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

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

Date: May 2, 2019

/s/ Daniel J. Luckshire

Daniel J. Luckshire

Executive Vice President and

Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION 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 of SIGA Technologies, Inc. (the “Company”) on Form 10-Q for the quarterly period ended March 31, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Phillip L. Gomez, Ph. D., Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

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

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

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

/s/ Phillip L. Gomez, Ph.D.

Phillip L. Gomez, Ph.D.

Chief Executive Officer

May 2, 2019

EX-32.2

Exhibit 32.2

CERTIFICATION 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 of SIGA Technologies, Inc. (the “Company”) on Form 10-Q for the quarterly period ended March 31, 2019 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Daniel J. Luckshire, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

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

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

A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

/s/ Daniel J. Luckshire

Daniel J. Luckshire

Executive Vice President and Chief Financial Officer

May 2, 2019

XML

Document and Entity Information Document - shares	3 Months Ended
	Mar. 31, 2019	Apr. 24, 2019
Document and Entity Information [Abstract]
Entity Registrant Name	SIGA TECHNOLOGIES INC
Entity Central Index Key	0001010086
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Trading Symbol	SIGAQ
Document Type	10-Q
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding		80,941,524

XML

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Current assets
Cash and cash equivalents	$ 102,085,215	$ 100,652,809
Restricted cash, short-term	11,461,290	11,452,078
Accounts receivable	4,099,954	1,959,133
Inventory	2,017,077	2,908,210
Prepaid expenses and other current assets	3,875,130	4,317,615
Total current assets	123,538,666	121,289,845
Property, plant and equipment, net	2,987,432	171,274
Restricted cash, long-term	66,794,243	68,292,023
Deferred tax assets, net	11,227,707	11,733,385
Goodwill	898,334	898,334
Other assets	992,966	1,058,880
Total assets	206,439,348	203,443,741
Current liabilities
Accounts payable	(2,149,605)	(1,688,488)
Accrued expenses and other current liabilities	9,957,736	9,648,917
Warrant liability	8,071,873	12,380,939
Total current liabilities	12,107,341	11,337,405
Other liabilities	3,534,054	1,263,113
Long-term debt	76,656,511	75,547,597
Total liabilities	100,369,779	100,529,054
Commitments and contingencies
Stockholders’ equity
Common stock ($.0001 par value, 600,000,000 shares authorized, 80,941,524 and 80,763,350 issued and outstanding at March 31, 2019, and December 31, 2018, respectively)	8,094	8,076
Additional paid-in capital	220,222,959	218,697,872
Accumulated deficit	(114,161,484)	(115,791,261)
Total stockholders’ equity	106,069,569	102,914,687
Total liabilities and stockholders’ equity	$ 206,439,348	$ 203,443,741

XML

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Balance Sheet Parenthetical [Abstract]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	80,941,524	80,941,524
Common stock, shares outstanding	80,763,350	80,763,350

XML

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues
Revenues	$ 10,459,084	$ 1,747,934
Operating expenses
Cost of sales and supportive services	915,367	0
Selling, general and administrative	3,166,566	3,056,546
Research and development	3,997,281	3,007,827
Patent expenses	187,916	218,472
Total operating expenses	8,267,130	6,282,845
Operating income (loss)	2,191,954	(4,534,911)
Gain (loss) from change in fair value of warrant liability	3,136,265	(3,303,114)
Interest expense	(3,928,418)	(3,748,818)
Other income, net	736,129	2,235
Income (loss) before income taxes	2,135,930	(11,584,608)
(Provision) benefit for income taxes	(506,153)	2,352
Net and comprehensive income (loss)	$ 1,629,777	$ (11,582,256)
Earning (Loss) earning per share: basic	$ 0.02	$ (0.15)
(Loss) earning per share: diluted	$ (0.02)	$ (0.15)
Weighted average shares outstanding: basic	80,913,320	79,039,000
Weighted average shares outstanding: diluted	82,139,108	79,039,000
Product sales and supportive services
Revenues
Revenues	$ 7,142,400	$ 0
Research and development
Revenues
Revenues	$ 3,316,684	$ 1,747,934

XML

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash flows from operating activities:
Net Income (loss)	$ 1,629,777	$ (11,582,256)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and other amortization	137,724	29,790
(Decrease)/increase in fair value of warrant liability	(3,136,265)	3,303,114
Stock-based compensation	408,894	327,360
Deferred income taxes provision/(benefit)	505,678	(9,758)
Non-cash interest expense	1,108,916	1,108,916
Changes in assets and liabilities:
Accounts receivable	(2,140,821)	645,730
Inventory	891,133	0
Deferred costs	0	184,864
Prepaid expenses and other current assets	442,484	119,433
Other assets	65,916	0
Accounts payable, accrued expenses and other current liabilities	(937,637)	(2,792,043)
Deferred revenue	1,277,828	169,269
Other liabilities	(244,248)	(66,122)
Net cash provided by (used in) operating activities	9,379	(8,561,703)
Cash flows from investing activities:
Capital expenditures	(8,951)	0
Net cash used in investing activities	(8,951)	0
Cash flows from financing activities:
Payment of employee tax obligations for common stock tendered	56,590	0
Net cash used in financing activities	(56,590)	0
Net decrease in cash and cash equivalents	(56,162)	(8,561,703)
Cash, cash equivalents and restricted cash at the beginning of period	180,396,910	37,101,586
Cash, cash equivalents and restricted cash at end of period	180,340,748	28,539,883
Supplemental disclosure of non-cash financing activities:
Conversion of warrants to common stock	1,172,801	0
Issuance of common stock upon cashless exercise	$ 118,500	$ 0

XML

Condensed Consolidated Financial Statements

3 Months Ended

Mar. 31, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Condensed Consolidated Financial Statements

Condensed Consolidated Financial Statements

The financial statements are presented in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) for interim financial information and the rules and regulations of the Securities and Exchange Commission (the “SEC”) for quarterly reports on Form 10-Q and should be read in conjunction with the Company’s audited financial statements and notes thereto for the year ended December 31, 2018, included in the 2018 Annual Report on Form 10-K. All terms used but not defined elsewhere herein have the meaning ascribed to them in the Company’s 2018 Annual Report on Form 10-K filed on March 5, 2019. In the opinion of management, all adjustments (consisting of normal and recurring adjustments) considered necessary for a fair statement of the results of the interim periods presented have been included. The 2018 year-end condensed consolidated balance sheet data were derived from the audited financial statements but do not include all disclosures required by U.S. GAAP. The results of operations for the three months ended March 31, 2019 are not necessarily indicative of the results expected for the full year.

XML

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Adoption of ASC 842

On January 1, 2019, the Company adopted ASC 842, Leases (“ASC 842”) using the modified retrospective approach as of the effective date of the standard without revising prior periods. In addition, the Company elected the package of practical expedients permitted under the transition guidance within the new standard, which among other things, allowed the Company to carry forward its historical lease classification. In addition, the Company elected the hindsight practical expedient to determine the lease term for existing leases. The Company’s election of the hindsight practical expedient results in the extension of the Oregon lease term as it was determined that the first renewal option under this lease is expected to be exercised with a reasonable degree of certainty.

The Company was required to record an operating lease right-of-use asset and a corresponding operating lease liability, equal to the present value of the lease payments at the adoption date. In the determination of future lease payments, the Company has elected to aggregate lease components such as payments for rent, taxes and insurance costs with non-lease components such as maintenance costs and account for these payments as a single lease component. The present value of the lease payments is determined using the rate implicit in each lease, if known. Unless the rate implicit in the lease is known, the Company uses its incremental borrowing rate. The impact of adopting ASC 842 as of January 1, 2019 was an increase to operating lease right-of-use assets of approximately $2.9 million; an increase to operating lease liabilities of approximately $3.3 million; and a decrease to deferred rent of approximately $0.4 million.

Revenue Recognition

All of the Company’s revenue is derived from long-term contracts that span multiple years. The Company accounts for revenue in accordance with ASC Topic 606, Revenue from Contracts with Customers (“ASC 606”). A contract’s transaction price is allocated to distinct performance obligations and recognized as revenue when, or as, a performance obligation is satisfied. As of March 31, 2019, the Company's active performance obligations, for the contracts outlined in Note 3, consist of the following: four performance obligations relate to research and development services; two relate to manufacture and delivery of product; and one is associated with storage of product. The aggregate amount of transaction price allocated to remaining performance obligations for the 2011 BARDA Contract, 2018 BARDA Contract and the IV Formulation R&D Contract was $60.0 million as of March 31, 2019. Remaining performance obligations represent the transaction price for which work has not been performed and excludes unexercised contract options.

Contract Balances

The timing of revenue recognition, billings and cash collections may result in billed accounts receivable, unbilled receivables (contract assets) and customer advances and deposits (contract liabilities) in the condensed consolidated balance sheets. Generally, amounts are billed as work progresses in accordance with agreed-upon contractual terms either at periodic intervals (monthly) or upon achievement of contractual milestones. Under typical payment terms of fixed price arrangements, the customer pays the Company either performance-based payments or progress payments. For the Company’s cost-type arrangements, the customer generally pays the Company for its actual costs incurred, as well as its allocated overhead and G&A costs. Such payments occur within a short period of time. When the Company receives consideration, or such consideration is unconditionally due, prior to transferring goods or services to the customer under the terms of a sales contract, the Company records deferred revenue, which represents a contract liability. During the three months ended March 31, 2019, the Company recognized revenue of $0.4 million that was included in deferred revenue at the beginning of the period.

Restricted Cash and Cash Equivalents

A portion of the Company’s cash received from the Loan Agreement and all of the net cash proceeds from the Company's Priority Review Voucher ("PRV") sale on October 31, 2018 is restricted and were placed in reserve accounts. Cash originally received from the Loan Agreement, and placed in a reserve account, could only be used to pay interest on the Term Loan, aside from $5.0 million that was withdrawn from the reserve account on July 12, 2018 under the provisions of the Term Loan. Net cash received from the PRV sale is available to pay interest, fees and principal related to the Term Loan. See Note 8 for additional information.

The following table reconciles cash, cash equivalents and restricted cash per the condensed consolidated statements of cash flows to the condensed consolidated balance sheet for each respective period:

	As of
	March 31, 2019		December 31, 2018
Cash and cash equivalents	$	102,085,215	$	100,652,809
Restricted cash-short term	11,461,290		11,452,078
Restricted cash-long term	66,794,243		68,292,023
Cash, cash equivalents and restricted cash	$	180,340,748	$	180,396,910
	March 31, 2018		December 31, 2017
Cash and cash equivalents	$	13,934,807	$	19,857,833
Restricted cash-short term	10,850,136		10,701,305
Restricted cash-long term	3,754,940		6,542,448
Cash, cash equivalents and restricted cash	$	28,539,883	$	37,101,586

Recent Accounting Pronouncements

On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same one-step impairment test will be applied to goodwill at all reporting units, even those with zero or negative carrying amounts. The revised guidance will be applied prospectively, and is effective for fiscal years beginning after December 15, 2019. Early adoption is permitted for any impairment tests performed after January 1, 2017. The Company believes the adoption of ASU No. 2017-04 will not have a significant impact on its condensed consolidated financial statements.

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Procurement Contract and Research Agreements

3 Months Ended

Mar. 31, 2019

Research and Development [Abstract]

Procurement Contract and Research Agreements

Procurement Contracts and Research Agreements

2018 BARDA Contract

On September 10, 2018, the Company entered into a contract with the U.S. Biomedical Advanced Research and Development Authority (“BARDA”) pursuant to which SIGA agreed to deliver up to 1,488,000 courses of oral TPOXX® to the U.S. Strategic National Stockpile ("Strategic Stockpile"), and to manufacture and deliver to the Strategic Stockpile, or store as vendor-managed inventory, up to 212,000 courses of the intravenous (IV) formulation of TPOXX® ("IV TPOXX®"). Additionally, the contract includes funding from BARDA for advanced development of IV TPOXX®, post-marketing activities for oral and IV TPOXX®, and supportive procurement activities. The contract with BARDA (as amended, modified, or supplemented from time to time, the “2018 BARDA Contract”) currently contemplates, as of April 30, 2019, up to approximately $600.1 million of payments, of which approximately $51.7 million of payments are included within the base period of performance of five years, approximately $12.2 million of payments are related to exercised options and up to approximately $536.2 million of payments are currently classified as unexercised options. BARDA may choose in its sole discretion when, or whether, to exercise any of the unexercised options. The period of performance for options is up to ten years from the date of entry into the 2018 BARDA Contract and such options could be exercised at any time during the contract term, including during the base period of performance.

The base period of performance provides for potential payments of approximately $51.7 million for the following activities: payments of approximately $11.1 million for the delivery of approximately 35,700 courses of oral TPOXX® to the Strategic Stockpile; payments of $8.0 million for the manufacture of 20,000 courses of final drug product of IV TPOXX® ("IV FDP"), of which $3.2 million of payments are related to the manufacture of bulk drug substance ("IV BDS") to be used in the manufacture of IV FDP; payments of approximately $32.0 million to fund advanced development of IV TPOXX®; and payments of approximately $0.6 million for supportive procurement activities. As of March 31, 2019, the Company had received $7.1 million for the first quarter 2019 delivery of approximately 23,000 courses of oral TPOXX® to the Strategic Stockpile and $3.2 million for the 2018 manufacture of IV BDS. IV BDS is expected to be used for the manufacture of 20,000 courses of IV FDP. The $3.2 million received for the manufacture of IV BDS has been recorded as deferred revenue as of December 31, 2018 and March 31, 2019.

Exercised options specify potential payments up to approximately $12.2 million for funding of post-marketing activities for oral TPOXX®.

Unexercised options provide for potential payments up to approximately $536.2 million in total (if all such options are exercised). There are options for the following activities: payments of up to $450.2 million for the delivery of up to approximately 1,452,300 courses of oral TPOXX® to the Strategic Stockpile; payments of up to $76.8 million for the manufacture of up to 192,000 courses of IV FDP, of which up to $30.7 million of payments would be paid upon the manufacture of IV BDS to be used in the manufacture of IV FDP; payments of up to approximately $3.6 million to fund post-marketing activities for IV TPOXX®; and payments of up to approximately $5.6 million for supportive procurement activities.

The options related to IV TPOXX® are divided into two primary manufacturing steps. There are options related to the manufacture of bulk drug substance (“IV BDS Options”), and there are corresponding options (for the same number of IV courses) for the manufacture of final drug product (“IV FDP Options”). BARDA may choose to exercise any, all, or none of these options in its sole discretion. The 2018 BARDA Contract includes: three separate IV BDS Options, each providing for the bulk drug substance equivalent of 64,000 courses of IV TPOXX®; and three separate IV FDP Options, each providing for 64,000 courses of final drug product of IV TPOXX®. BARDA has the sole discretion on whether to simultaneously exercise IV BDS Options and IV FDP Options, or whether to make independent exercise decisions. If BARDA decides to only exercise IV BDS Options, then the Company would receive payments up to $30.7 million; alternatively, if BARDA decides to exercise both IV BDS Options and IV FDP Options, then the Company would receive payments up to $76.8 million. For each set of options relating to a specific group of courses (for instance, the IV BDS and IV FDP options that reference the same 64,000 courses), BARDA has the option to independently purchase IV BDS or IV FDP.

2011 BARDA Contract

On May 13, 2011, the Company signed a contract with BARDA pursuant to which BARDA agreed to buy from the Company 1.7 million courses of oral TPOXX®. Additionally, the Company agreed to contribute to BARDA 300,000 courses at no additional cost to BARDA.

The contract with BARDA (as amended, modified, or supplemented from time to time, the “2011 BARDA Contract”) includes a base contract, as modified, (“2011 Base Contract”) as well as options. The 2011 Base Contract provides for approximately $508.7 million of payments, of which as of March 31, 2019, $459.8 million had been received by the Company for the manufacture and delivery of 1.7 million courses of oral TPOXX® and $44.3 million had been received for certain reimbursements in connection with development and supportive activities. Approximately $4.6 million remains eligible to be received in the future for reimbursements of development and supportive activities.

For courses of oral TPOXX® that were physically delivered to the Strategic Stockpile under the 2011 BARDA Contract, there are product replacement obligations, including: (i) a product replacement obligation in the event that the final version of oral TPOXX® approved by the FDA was different from any courses of oral TPOXX® that had been delivered to the Strategic Stockpile (the “FDA Approval Replacement Obligation”); (ii) a product replacement obligation, at no cost to BARDA, in the event that oral TPOXX® is recalled or deemed to be recalled for any reason; and (iii) a product replacement obligation in the event that oral TPOXX® does not meet any specified label claims. On July 13, 2018, the FDA approved oral TPOXX® for the treatment of smallpox and there is no difference between the approved product and courses in the Strategic Stockpile. As such, the possibility of the FDA Approval Replacement Obligation resulting in any future replacements of product within the Strategic Stockpile is remote.

The 2011 BARDA Contract includes options. On July 30, 2018, the 2011 BARDA Contract was modified and BARDA exercised its option relating to FDA approval of aforementioned 84-month expiry for oral TPOXX® for which the Company was paid $50.0 million in August 2018. With the option exercise, the 2011 BARDA Contract was modified so that the 2011 Base Contract increased by $50.0 million. Remaining options, if all were exercised by BARDA, would result in aggregate payments to the Company of $72.7 million, including up to $58.3 million of funding for development and supportive activities such as work on a post-exposure prophylaxis ("PEP") indication for TPOXX® and/or $14.4 million of funding for production-related activities related to warm-base manufacturing. BARDA may choose, in its sole discretion not to exercise any or all of the unexercised options.

The 2011 BARDA Contract expires in September 2020.

Research Agreements and Grants

The Company has an R&D program for IV TPOXX®. This program is funded by the 2018 BARDA Contract and a development contract with BARDA (“IV Formulation R&D Contract”). The IV Formulation R&D Contract has a period of performance that terminates on December 30, 2020. As of March 31, 2019, the IV Formulation R&D Contract provides for future aggregate research and development funding of approximately $5.2 million.

Contracts and grants include, among other things, options that may or may not be exercised at the U.S. Government’s discretion. Moreover, contracts and grants contain customary terms and conditions including the U.S. Government’s right to terminate or restructure a contract or grant for convenience at any time. As such, we may not be eligible to receive all available funds.

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Inventory

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventory

Inventory

Inventory includes costs related to the manufacture of TPOXX®. Inventory consisted of the following:

	As of
	March 31, 2019		December 31, 2018
Work in-process	$	1,948,856	$	1,950,445
Finished goods	68,221		957,765
Inventory	$	2,017,077	$	2,908,210

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Property, Plant and Equipment

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment consisted of the following: 

	As of
	March 31, 2019			December 31, 2018
Leasehold improvements	$	2,420,028		$	2,420,028
Computer equipment	581,654			618,248
Furniture and fixtures	377,859			377,859
Operating lease right-of-use asset	2,944,932			—
	6,324,473			3,416,135
Less - accumulated depreciation	(3,337,041		)	(3,244,861		)
Property, plant and equipment, net	$	2,987,432		$	171,274

Depreciation and amortization expense on property, plant, and equipment was $137,724 and $29,790 for the three months ended March 31, 2019 and 2018, respectively.

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Accrued Expenses and Other Current Liabilities

3 Months Ended

Mar. 31, 2019

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	As of
	March 31, 2019		December 31, 2018
Bonus	$	764,059	$	2,600,839
Deferred revenue	5,437,774		4,159,946
Interest payable	1,003,911		35,567
Research and development vendor costs	628,565		1,446,410
Professional fees	497,276		242,043
Vacation	348,167		294,794
Other	1,277,984		869,318
Accrued expenses and other current liabilities	$	9,957,736	$	9,648,917

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Financial Instruments

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Financial Instruments

Financial Instruments

2016 Warrant

On September 2, 2016, in connection with the entry into the Loan Agreement (see Note 8 for additional information), the Company issued a warrant (the“Warrant”) to the Lender to purchase a number of shares of the Company’s common stock equal to$4.0 million divided by the lower of (i) $2.29 per share and (ii) the subscription price paid in connection with the Rights Offering. The Warrant provides for weighted average anti-dilution protection and is exercisable in whole or in part for ten (10) years from the date of issuance. The per share subscription price paid was $1.50 in connection with the Rights Offering; accordingly, the exercise price of the Warrant was set at $1.50 per share, and there were 2.7 million shares underlying the Warrant. Subsequent to partial exercises of the Warrant, there are approximately 1.5 million shares underlying the Warrant as of March 31, 2019.

The Company accounted for the Warrant in accordance with the authoritative guidance which requires that free-standing derivative financial instruments with certain anti-dilution and cash settlement features be classified as assets or liabilities at the time of the transaction, and recorded at their fair value. Any changes in the fair value of the derivative instruments are reported in earnings or loss as long as the derivative contracts are classified as assets or liabilities. Accordingly, the Company classified the Warrant as a liability and reports the change in fair value in the statement of operations.

As of March 31, 2019, the fair value of the Warrant was $8.1 million. The fair value of the liability-classified Warrant was calculated using the following assumptions: risk free interest rate of 2.33%; no dividend yield; an expected life of 7.42 years; and a volatility factor of 70%.

For the three months ended March 31, 2019 and 2018, the Company recorded a gain of $3.1 million and a loss of $3.3 million, respectively, as a result of the change in fair value of the liability-classified Warrant.

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Debt

3 Months Ended

Mar. 31, 2019

Debt Disclosure [Abstract]

Debt

Debt

On September 2, 2016, the Company entered into a loan and security agreement (as amended from time to time, the “Loan Agreement”) with OCM Strategic Credit SIGTEC Holdings, LLC (“Lender”), pursuant to which the Company received $80.0 million (less fees and other items) on November 16, 2016 having satisfied certain pre-conditions. Such $80.0 million had been placed in an escrow account on September 30, 2016 (the “Escrow Funding Date”). Prior to the Escrow Release Date (November 16, 2016), the Company did not have access to, or any ownership interest in, the escrow account. Until the Escrow Release Date occurred, the Company did not have an obligation to make any payments under the Loan Agreement, no security was granted under the Loan Agreement and no affirmative or negative covenants or events of default were effective under the Loan Agreement. Amounts were held in the escrow account until the satisfaction of certain conditions including the closing of the Rights Offering (see Note 7) on November 16, 2016. As part of the satisfaction of the PharmAthene claim, funds were released from the escrow account (the date on which such transfer occurred, the “Escrow Release Date”).

The Loan Agreement provides for a first-priority senior secured term loan facility in the aggregate principal amount of $80.0 million (the “Term Loan”), of which (i) $25.0 million was placed in a reserve account (the “Reserve Account”) only to be utilized to pay interest on the Term Loan as it becomes due; (ii) an additional $5.0 million was also placed in the Reserve Account and up to the full amount of such $5.0 million was eligible to be withdrawn after June 30, 2018 upon the satisfaction of certain conditions, provided that any of such amount is required to fund any interest to the extent any interest in excess of the aforementioned $25.0 million is due and owing and any of such $5.0 million remains in the Reserve Account; and (iii) $50.0 million (net of fees and expenses then due and owing to the Lender) was paid as part of the final payment to satisfy a litigation claim. Interest on the Term Loan is at a per annum rate equal to the Adjusted LIBOR rate plus 11.5%, subject to adjustments as set forth in the Loan Agreement. At March 31, 2019, the effective interest rate on the Term Loan, which includes interest payments and accretion of unamortized costs and fees, was 19.4%. The Company incurred approximately $3.9 million of interest expense during the three months ended March 31, 2019, of which $1.1 million accreted to the Term Loan balance. On July 12, 2018, upon confirmation that there had been no events of default, $5 million was withdrawn by the Company from the Reserve Account and was placed in the Company's cash operating account. On October 31, 2018, the Loan Agreement was amended to expand the definition of permitted dispositions to include a sale of the PRV. In connection with the amendment, net cash proceeds from the sale of the PRV ($78.3 million) were placed in a restricted cash account; such restricted account is to be used only for interest, fees and principal payments (other than those in connection with an event of default) related to the Term Loan.

The Term Loan shall mature on the earliest to occur of (i) the four-year anniversary of the Escrow Release Date, and (ii) the acceleration of certain obligations pursuant to the Loan Agreement. At maturity, $80.0 million of principal will be repaid, and an additional $4.0 million will be paid (see below). Prior to maturity, there are no scheduled principal payments.

Through the three and one-half year anniversary of the Escrow Release Date, any prepayment of the Term Loan is subject to a make-whole provision in which interest payments related to the prepaid amount are due (subject to a discount of treasury rate plus 0.50%).

In connection with the Term Loan, the Company has granted the Lender a lien on and security interest in all of the Company’s right, title and interest in substantially all of the Company’s tangible and intangible assets, including all intellectual property.

The Loan Agreement contains customary representations and warranties and customary affirmative and negative covenants. These covenants, among other things, require a minimum cash balance throughout the term of the Term Loan and the achievement of regulatory milestones by certain dates, and contain certain limitations on the ability of the Company to incur unreimbursed research and development expenditures over a certain threshold, make capital expenditures over a certain threshold, incur indebtedness, dispose of assets outside of the ordinary course of business, make cash distributions and enter into certain merger or consolidation transactions. The minimum cash requirement was $5.0 million until August 27, 2018 (45 days after FDA approval of oral TPOXX®), at which point the minimum cash requirement became $20.0 million.

The Loan Agreement includes customary events of default, including, among others: (i) non-payment of amounts due thereunder, (ii) the material inaccuracy of representations or warranties made thereunder, (iii) non-compliance with covenants thereunder, (iv) non-payment of amounts due under, or the acceleration of, other material indebtedness of the Company and (v) bankruptcy or insolvency events. Upon the occurrence and during the continuance of an event of default under the Loan Agreement, the interest rate may increase by 2.00% per annum above the rate of interest otherwise in effect, and the Lenders would be entitled to accelerate the maturity of the Company’s outstanding obligations thereunder.

As of March 31, 2019, the Company is in compliance with the Loan Agreement covenants.

In connection with the Loan Agreement, the Company incurred $8.2 million of costs (including interest on amounts held in the escrow account between September 30, 2016 and November 15, 2016). Furthermore, an additional $4.0 million will become payable when principal of the Term Loan is repaid. As part of the Company's entry into the Loan Agreement, the Company issued the Warrant (see Note 7) with a fair market value of $5.8 million. The fair value of the Warrant, as well as costs related to the Term Loan issuance, were recorded as deductions to the Term Loan balance on the Balance Sheet. These amounts are being amortized on a straight-line basis over the life of the related Term Loan. The Company compared the amortization under the effective interest method with the straight-line basis and determined the results were not materially different. The $4.0 million that will be paid when principal is repaid is being accreted to the Term Loan balance. As of March 31, 2019, the Term Loan balance is $76.7 million.

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Fair Value of Financial INstruments

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The carrying value of cash equivalents, restricted cash, accounts receivable, accounts payable and accrued expenses and other current liabilities approximates fair value due to the relatively short maturity of these instruments. Common stock warrants which are classified as a liability are recorded at their fair market value as of each reporting period.

The measurement of fair value requires the use of techniques based on observable and unobservable inputs. Observable inputs reflect market data obtained from independent sources, while unobservable inputs reflect our market assumptions. The inputs create the following fair value hierarchy:

• Level 1 – Quoted prices for identical instruments in active markets.

• Level 2 – Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations where inputs are observable or where significant value drivers are observable.

• Level 3 – Instruments where significant value drivers are unobservable to third parties.

The Company uses model-derived valuations where certain inputs are unobservable to third parties to determine the fair value of certain common stock warrants on a recurring basis and classifies such liability-classified warrants in Level 3. As described in Note 7, the fair value of the liability classified warrant was $8.1 million at March 31, 2019.

At March 31, 2019, the fair value of the debt was $87.5 million and the carrying value of the debt was $76.7 million. The Company used a discounted cash flow model to estimate the fair value of the debt by applying a discount rate to future payments expected to be made as set forth in the Loan Agreement.  The fair value of the loan was measured using Level 3 inputs.  The discount rate was determined using market participant assumptions.

There were no transfers between levels of the fair value hierarchy for the three months ended March 31, 2019. In addition, there were no Level 1 or Level 2 financial instruments as of March 31, 2019 and December 31, 2018.

The following table presents changes in the liability-classified warrant measured at fair value using Level 3 inputs:

	Fair Value Measurements of Level 3 liability-classified warrant
Warrant liability at December 31, 2018	$	12,380,939
Decrease in fair value of warrant liability	(3,136,265		)
Exercise of warrants	(1,172,801		)
Warrant liability at March 31, 2019	$	8,071,873

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Per Share Data

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Per Share Data

Per Share Data

The Company computes, presents and discloses earnings per share in accordance with the authoritative guidance which specifies the computation, presentation and disclosure requirements for earnings per share of entities with publicly held common stock or potential common stock. The objective of basic EPS is to measure the performance of an entity over the reporting period by dividing income (loss) by the weighted average shares outstanding. The objective of diluted EPS is consistent with that of basic EPS, except that it also gives effect to all potentially dilutive common shares outstanding during the period.

The following is a reconciliation of the basic and diluted earnings (loss) per share computation: 

	Three months ended March 31,
	2019			2018
Net income (loss) for basic earnings per share	$	1,629,777		$	(11,582,256	)
Less: Change in fair value of warrants	(3,136,265		)	—
Net loss, adjusted for change in fair value of warrants for diluted earnings per share	$	(1,506,488	)	$	(11,582,256	)
Weighted-average shares	80,913,320			79,039,000
Effect of potential common shares	1,225,788			—
Weighted-average shares: diluted	82,139,108			79,039,000
Earnings (loss) per share: basic	$	0.02		$	(0.15	)
Loss per share: diluted	$	(0.02	)	$	(0.15	)

For the three months ended March 31, 2019, the diluted earnings per share calculation reflects the effect of the assumed exercise of outstanding warrants and any corresponding elimination of the impact included in operating results from the change in fair value of the warrants. Weighted-average diluted shares include the dilutive effect of warrants. The dilutive effect of warrants is calculated based on the average share price for each fiscal period using the treasury stock method.

The Company incurred losses adjusted for the change in the fair value of warrants for the three months ended March 31, 2019 and 2018 and as a result, the equity instruments listed below were excluded from the calculation of diluted earnings (loss) per share as the effect of the exercise, conversion or vesting of such instruments would be anti-dilutive. The weighted average number of equity instruments excluded consisted of:

	Three months ended March 31,
	2019	2018
Stock Options	377,011	1,062,467
Stock-Settled Stock Appreciation Rights	6,756	162,393
Restricted Stock Units (1)	509,411	1,472,001
Warrants	—	2,690,950

(1) Includes as of March 31, 2018, 294,118 restricted stock units that had vested but not converted into common stock. As of March 31, 2019, all equity instruments are unvested.

The appreciation of each stock-settled stock appreciation right was capped at a determined maximum value. As a result, the weighted average number shown in the table above for stock-settled stock appreciation rights reflects the weighted average maximum number of shares that could be issued.

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Commitments and Contingencies

3 Months Ended

Mar. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Commitments and Contingencies

From time to time, we may be involved in a variety of claims, suits, investigations and proceedings arising from the ordinary course of our business, collections claims, breach of contract claims, labor and employment claims, tax and other matters. Although such claims, suits, investigations and proceedings are inherently uncertain and their results cannot be predicted with certainty, we believe that the resolution of such current pending matters, if any, will not have a material adverse effect on our business, consolidated financial position, results of operations or cash flow. Regardless of the outcome, litigation can have an adverse impact on us because of legal costs, diversion of management resources and other factors.

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Related Party Transactions

3 Months Ended

Mar. 31, 2019

Related Party Transactions [Abstract]

Related Party Transactions

Related Party Transactions

Board of Directors and Outside Counsel

A member of the Company’s Board of Directors is a member of the Company’s outside counsel. During the three months ended March 31, 2019 and 2018, the Company incurred expenses of $113,000 and $107,000, respectively, related to services provided by the outside counsel. On March 31, 2019 the Company’s outstanding payables and accrued expenses included an approximate $39,000 liability to the outside counsel.

Board of Directors-Consulting Agreement

On October 13, 2018, the Company, entered into a consulting agreement with Dr. Eric A. Rose, a member, and former Executive Chairman, of the Company’s Board of Directors. Under the agreement, the consulting services will include assisting the Company on expanded indications for TPOXX® and other business development opportunities as requested by the Company. The term of the agreement is for two years, with compensation for such services at an annual rate of $200,000. During the three months ended March 31, 2019, the Company incurred $50,000 related to services under this agreement. As of March 31, 2019, the Company’s outstanding payables and accrued expenses included a $50,000 liability associated with this agreement.

Real Estate Leases

On May 26, 2017 the Company and MacAndrews & Forbes Incorporated (“M&F”) entered into a ten-year Office Lease agreement (the “New HQ Lease”), pursuant to which the Company agreed to lease 3,200 square feet at 31 East 62^nd Street, New York, New York. The Company is utilizing premises leased under the New HQ Lease as its new corporate headquarters. The Company's rental obligations consist of a fixed rent of $25,333 per month in the first sixty-three months of the term, subject to a rent abatement for the first six months of the term. From the first day of the sixty-fourth month of the term through the expiration or earlier termination of the lease, the Company's rental obligations consist of a fixed rent of $29,333 per month. In addition to the fixed rent, the Company will pay a facility fee in consideration of the landlord making available certain ancillary services, commencing on the first anniversary of entry into the lease. The facility fee will be $3,333 per month for the second year of the term and increasing by five percent each year thereafter, to $4,925 per month in the final year of the term.

On July 31, 2017, the Company and M&F entered into a Termination of Sublease Agreement (the “Old HQ Sublease Termination Agreement”), pursuant to which the Company and M&F agreed to terminate the sublease dated January 9, 2013 for 6,676 square feet of rental square footage located at 660 Madison Avenue, Suite 1700, New York, New York (such sublease being the “Old HQ Sublease” and the location being the “Old HQ”).

Effectiveness of the Old HQ Sublease Termination Agreement was conditioned upon the commencement of a sublease for the Old HQ between M&F and a new subtenant (the “Replacement M&F Sublease”), which occurred on August 2, 2017. The Old HQ Sublease Termination Agreement obligates the Company to pay, on a monthly basis, an amount equal to the discrepancy (the “Rent Discrepancy”) between the sum of certain operating expenses and taxes (“Additional Rent”) and fixed rent under the overlease between M&F and the landlord at 660 Madison Avenue and the sum of Additional Rent and fixed rent under the Replacement M&F Sublease. Under the Old HQ Sublease Termination Agreement, the Company and M&F release each other from any liability under the Old HQ Sublease.

Under the Old HQ Sublease, the Company was obligated to pay fixed rent of approximately $60,000 per month until August 2018 and approximately $63,400 per month thereafter until the Old HQ Sublease expiration date of August 31, 2020. Additionally, the Company was obligated to pay certain operating expenses and taxes ("Additional Rent"), such Additional Rent being specified in the overlease between M&F and the landlord at 660 Madison Avenue (the "Old HQ Overlease").

Under the Replacement M&F Sublease, the subtenant’s rental obligations were excused for the first two (2) months of the lease term (“Rent Concession Period”). Thereafter, the subtenant was obligated to pay fixed rent of $36,996 per month for the first twelve (12) months, and is obligated to pay $37,831 per month for the next 12 months, and $38,665 per month until the scheduled expiration of the Replacement M&F Sublease on August 24, 2020. In addition to fixed rent, the subtenant is also obligated to pay, pursuant to the Replacement M&F Sublease, a portion of the Additional Rent specified in the Old HQ Overlease.

For the time period between August 2, 2017 and August 31, 2020 (the expiration date of the Old HQ Sublease), the Company estimates that it will pay a total of approximately $0.9 million combined in fixed rent and additional amounts payable under the New HQ Lease and a total of approximately $1.1 million in Rent Discrepancy under the Old HQ Sublease Termination Agreement, for a cumulative total of $2.0 million. In contrast, fixed rent and estimated Additional Rent under the Old HQ Sublease, for the aforementioned time period, would have been a total of approximately $2.4 million if each of the New HQ Lease, Replacement M&F Sublease and Old HQ Sublease Termination Agreement had not been entered into by each of the parties thereto. Because amounts such as operating expenses and taxes may vary, the foregoing totals can only be estimated at this time and are subject to change.

As a result of the above-mentioned transactions, the Company discontinued usage of Old HQ in the third quarter of 2017. As such, during the year ended December 31, 2017 the Company recorded a loss of approximately $1.1 million in accordance with Accounting Standards Codification (“ASC”) 420, Exit or Disposal Obligations. This loss primarily represented the discounted value of estimated Rent Discrepancy payments to occur in the future, and included costs related to the termination of the old HQ Sublease. The Company also wrote-off approximately $0.1 million of leasehold improvements and furniture and fixtures related to the Old HQ.

The following table summarizes activity relating to the liability that was recorded as a result of the lease termination:

	Lease Termination liability
Balance at December 31, 2018	$	509,937
Charges (included in selling, general and administrative expenses)	9,189
Cash payments, net of sublease income	(87,875		)
Balance at March 31, 2019	$	431,251

As of March 31, 2019, approximately $0.1 million of the lease termination liability is included in Other liabilities on the condensed consolidated balance sheet with the remainder included in Accrued expenses and other current liabilities.

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Equity

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Equity

Equity

The tables below present changes in stockholder's equity for the three months ended March 31, 2019 and 2018.

	Common Stock					Additional Paid-in Capital			Accumulated Deficit			Other Comprehensive Income		Total Stockholders' Equity
	Shares		Amount
Balances at December 31, 2018	80,763,350		$	8,076		$	218,697,872		$	(115,791,261	)	$	—	$	102,914,687
Net income									1,629,777					1,629,777
Issuance of common stock upon exercise of stock options	9,769		1			(1		)						—
Issuance of common stock upon exercise of stock-settled appreciation rights	16,771		2			(2		)						—
Issuance of common stock upon exercise of warrants	159,782		16			1,172,785								1,172,801
Payment of common stock tendered for employee stock-based compensation tax obligations	(8,148	)	(1		)	(56,589		)						(56,590		)
Stock-based compensation	—		—			408,894								408,894
Balances at March 31, 2019	80,941,524		$	8,094		$	220,222,959		$	(114,161,484	)	$	—	$	106,069,569

	Common Stock			Additional Paid-in Capital		Accumulated Deficit			Other Comprehensive Income		Total Stockholders' Deficiency
	Shares	Amount
Balances at December 31, 2017	79,039,000	$	7,904	$	214,229,581	$	(537,375,776	)	$	—	$	(323,138,291	)
Net loss	—	—		—		(11,582,256		)	—		(11,582,256		)
Cumulative effect of accounting change	—	—		—		(223,313		)	—		(223,313		)
Stock-based compensation	—	—		327,360		—			—		327,360
Balances at March 31, 2018	79,039,000	$	7,904	$	214,556,941	$	(549,181,345	)	$	—	$	(334,616,500	)

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Income Taxes

3 Months Ended

Mar. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company’s provision for income taxes consists of federal and state taxes, as applicable, in amounts necessary to align the Company’s year-to-date tax provision with the effective rate that it expects to achieve for the full year. Each quarter the Company updates its estimate of the annual effective tax rate and records cumulative adjustments as necessary.

The effective tax rate of 23.70% for the three months ended March 31, 2019 differs from the statutory rate of 21.00% primarily as a result of non-deductible executive compensation under IRC Section 162(m) and a non-taxable adjustment for the fair market value of the Warrant. The effective tax rate of 0.02% for the three months ended March 31, 2018 differs from the statutory rate of 21.00% as no income tax benefit was recorded for operating losses due to the Company's assessment regarding tax realizability of its deferred tax assets.

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Leases

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Leases

Leases

The Company leases its Corvallis, Oregon, facilities and office space under an operating lease which was signed on November 3, 2017 and commenced on January 1, 2018. The initial term of this lease expires December 31, 2019 after which the Company has two successive renewal options; one for two years and the other for three years. On May 26, 2017 the Company and M&F entered into a ten-year office lease agreement (the “New HQ Lease”), pursuant to which the Company agreed to lease 3,200 square feet in New York, New York. The Company is utilizing premises leased under the New HQ Lease as its corporate headquarters. The Company has no leases that qualify as finance leases.

Operating lease costs totaled $0.1 million and $0.1 million for the three months ended March 31, 2019 and 2018, respectively. Cash paid for amounts included in the measurement of lease liabilities from operating cash flows were $0.1 million and $0.1 million for the three months ended March 31, 2019 and 2018, respectively. As of March 31, 2019, the weighted-average remaining lease term of the Company’s operating leases was 6.81 years while the weighted-average discount rate was 4.53%.

Future undiscounted cash flows under operating leases as of March 31, 2019 are expected to be as follows:

2019	$	438,618
2020	591,108
2021	600,362
2022	368,467
2023	402,078
Thereafter	1,387,139
Total undiscounted cash flows under leases	3,787,772
Less: Imputed interest	(587,491		)
Present value of lease liabilities	$	3,200,281

As of March 31, 2019, approximately $2.8 million of the lease liability is included in Other liabilities on the condensed consolidated balance sheet with the remainder in accrued expenses.

As previously disclosed in the Company's 2018 Annual Report on Form 10-K and under ASC 840, Leases, the predecessor to ASC 842, future minimum lease payments for operating leases having initial or remaining noncancellable lease terms in excess of one year would have been as follows:

2019	$	541,376
2020	304,000
2021	304,000
2022	320,774
2023	352,000
Thereafter	1,197,778
Total	$	3,019,928

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Summary of Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Restricted Cash and Cash Equivalents

Restricted Cash and Cash Equivalents

A portion of the Company’s cash received from the Loan Agreement and all of the net cash proceeds from the Company's Priority Review Voucher ("PRV") sale on October 31, 2018 is restricted and were placed in reserve accounts. Cash originally received from the Loan Agreement, and placed in a reserve account, could only be used to pay interest on the Term Loan, aside from $5.0 million that was withdrawn from the reserve account on July 12, 2018 under the provisions of the Term Loan. Net cash received from the PRV sale is available to pay interest, fees and principal related to the Term Loan. See Note 8 for additional information.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

On January 26, 2017, the FASB issued ASU No. 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment. The guidance removes Step 2 of the goodwill impairment test, which requires a hypothetical purchase price allocation. A goodwill impairment will now be the amount by which a reporting unit’s carrying value exceeds its fair value, not to exceed the carrying amount of goodwill. All other goodwill impairment guidance will remain largely unchanged. Entities will continue to have the option to perform a qualitative assessment to determine if a quantitative impairment test is necessary. The same one-step impairment test will be applied to goodwill at all reporting units, even those with zero or negative carrying amounts. The revised guidance will be applied prospectively, and is effective for fiscal years beginning after December 15, 2019. Early adoption is permitted for any impairment tests performed after January 1, 2017. The Company believes the adoption of ASU No. 2017-04 will not have a significant impact on its condensed consolidated financial statements.

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Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2019

Accounting Policies [Abstract]

Cash, Cash Equivalents and Restricted Cash

The following table reconciles cash, cash equivalents and restricted cash per the condensed consolidated statements of cash flows to the condensed consolidated balance sheet for each respective period:

	As of
	March 31, 2019		December 31, 2018
Cash and cash equivalents	$	102,085,215	$	100,652,809
Restricted cash-short term	11,461,290		11,452,078
Restricted cash-long term	66,794,243		68,292,023
Cash, cash equivalents and restricted cash	$	180,340,748	$	180,396,910
	March 31, 2018		December 31, 2017
Cash and cash equivalents	$	13,934,807	$	19,857,833
Restricted cash-short term	10,850,136		10,701,305
Restricted cash-long term	3,754,940		6,542,448
Cash, cash equivalents and restricted cash	$	28,539,883	$	37,101,586

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Inventory (Tables)

3 Months Ended

Mar. 31, 2019

Inventory Disclosure [Abstract]

Inventory

Inventory includes costs related to the manufacture of TPOXX®. Inventory consisted of the following:

	As of
	March 31, 2019		December 31, 2018
Work in-process	$	1,948,856	$	1,950,445
Finished goods	68,221		957,765
Inventory	$	2,017,077	$	2,908,210

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Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property, plant and equipment

Property, plant and equipment consisted of the following: 

	As of
	March 31, 2019			December 31, 2018
Leasehold improvements	$	2,420,028		$	2,420,028
Computer equipment	581,654			618,248
Furniture and fixtures	377,859			377,859
Operating lease right-of-use asset	2,944,932			—
	6,324,473			3,416,135
Less - accumulated depreciation	(3,337,041		)	(3,244,861		)
Property, plant and equipment, net	$	2,987,432		$	171,274

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Accrued Expenses and Other Current Liabilities (Tables)

3 Months Ended

Mar. 31, 2019

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	As of
	March 31, 2019		December 31, 2018
Bonus	$	764,059	$	2,600,839
Deferred revenue	5,437,774		4,159,946
Interest payable	1,003,911		35,567
Research and development vendor costs	628,565		1,446,410
Professional fees	497,276		242,043
Vacation	348,167		294,794
Other	1,277,984		869,318
Accrued expenses and other current liabilities	$	9,957,736	$	9,648,917

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Fair Value of Financial INstruments (Tables)

3 Months Ended

Mar. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation

The following table presents changes in the liability-classified warrant measured at fair value using Level 3 inputs:

	Fair Value Measurements of Level 3 liability-classified warrant
Warrant liability at December 31, 2018	$	12,380,939
Decrease in fair value of warrant liability	(3,136,265		)
Exercise of warrants	(1,172,801		)
Warrant liability at March 31, 2019	$	8,071,873

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Per Share Data (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Schedule of earnings per share, basic and diluted

The following is a reconciliation of the basic and diluted earnings (loss) per share computation: 

	Three months ended March 31,
	2019			2018
Net income (loss) for basic earnings per share	$	1,629,777		$	(11,582,256	)
Less: Change in fair value of warrants	(3,136,265		)	—
Net loss, adjusted for change in fair value of warrants for diluted earnings per share	$	(1,506,488	)	$	(11,582,256	)
Weighted-average shares	80,913,320			79,039,000
Effect of potential common shares	1,225,788			—
Weighted-average shares: diluted	82,139,108			79,039,000
Earnings (loss) per share: basic	$	0.02		$	(0.15	)
Loss per share: diluted	$	(0.02	)	$	(0.15	)

Schedule of antidilutive securities excluded from computation of earnings per share

The weighted average number of equity instruments excluded consisted of:

	Three months ended March 31,
	2019	2018
Stock Options	377,011	1,062,467
Stock-Settled Stock Appreciation Rights	6,756	162,393
Restricted Stock Units (1)	509,411	1,472,001
Warrants	—	2,690,950

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Related Party Transactions (Tables)

3 Months Ended

Mar. 31, 2019

Related Party Transactions [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes activity relating to the liability that was recorded as a result of the lease termination:

	Lease Termination liability
Balance at December 31, 2018	$	509,937
Charges (included in selling, general and administrative expenses)	9,189
Cash payments, net of sublease income	(87,875		)
Balance at March 31, 2019	$	431,251

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Equity (Tables)

3 Months Ended

Mar. 31, 2019

Equity [Abstract]

Schedule of Stockholders Equity

The tables below present changes in stockholder's equity for the three months ended March 31, 2019 and 2018.

	Common Stock					Additional Paid-in Capital			Accumulated Deficit			Other Comprehensive Income		Total Stockholders' Equity
	Shares		Amount
Balances at December 31, 2018	80,763,350		$	8,076		$	218,697,872		$	(115,791,261	)	$	—	$	102,914,687
Net income									1,629,777					1,629,777
Issuance of common stock upon exercise of stock options	9,769		1			(1		)						—
Issuance of common stock upon exercise of stock-settled appreciation rights	16,771		2			(2		)						—
Issuance of common stock upon exercise of warrants	159,782		16			1,172,785								1,172,801
Payment of common stock tendered for employee stock-based compensation tax obligations	(8,148	)	(1		)	(56,589		)						(56,590		)
Stock-based compensation	—		—			408,894								408,894
Balances at March 31, 2019	80,941,524		$	8,094		$	220,222,959		$	(114,161,484	)	$	—	$	106,069,569

	Common Stock			Additional Paid-in Capital		Accumulated Deficit			Other Comprehensive Income		Total Stockholders' Deficiency
	Shares	Amount
Balances at December 31, 2017	79,039,000	$	7,904	$	214,229,581	$	(537,375,776	)	$	—	$	(323,138,291	)
Net loss	—	—		—		(11,582,256		)	—		(11,582,256		)
Cumulative effect of accounting change	—	—		—		(223,313		)	—		(223,313		)
Stock-based compensation	—	—		327,360		—			—		327,360
Balances at March 31, 2018	79,039,000	$	7,904	$	214,556,941	$	(549,181,345	)	$	—	$	(334,616,500	)

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Leases (Tables)

3 Months Ended

Mar. 31, 2019

Leases [Abstract]

Lessee, Operating Lease, Liability, Maturity

Future undiscounted cash flows under operating leases as of March 31, 2019 are expected to be as follows:

2019	$	438,618
2020	591,108
2021	600,362
2022	368,467
2023	402,078
Thereafter	1,387,139
Total undiscounted cash flows under leases	3,787,772
Less: Imputed interest	(587,491		)
Present value of lease liabilities	$	3,200,281

Schedule of Future Minimum Rental Payments for Operating Leases

As previously disclosed in the Company's 2018 Annual Report on Form 10-K and under ASC 840, Leases, the predecessor to ASC 842, future minimum lease payments for operating leases having initial or remaining noncancellable lease terms in excess of one year would have been as follows:

2019	$	541,376
2020	304,000
2021	304,000
2022	320,774
2023	352,000
Thereafter	1,197,778
Total	$	3,019,928

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Summary of Significant Accounting Policies - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018	Jul. 12, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, liability	$ 3,200,281
Revenue, remaining performance obligation, amount			$ 60,000,000
Revenue recognized	400,000
Government contract, number of payments to be paid upon delivery of bulk drug substance	$ 3,200,000
Secured Debt | Loan Agreement
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash withdrawn from reserve account				$ 5,000,000
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset		$ 2,900,000
Operating lease, liability		3,300,000
Deferred rent		$ 400,000

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Summary of Significant Accounting Policies - Cash, Cash Equivalents, Restricted Cash (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017
Accounting Policies [Abstract]
Cash and cash equivalents	$ 102,085,215	$ 100,652,809	$ 13,934,807	$ 19,857,833
Restricted cash - short-term	11,461,290	11,452,078	10,850,136	10,701,305
Restricted cash - long-term	66,794,243	68,292,023	3,754,940	6,542,448
Cash, cash equivalents and restricted cash	$ 180,340,748	$ 180,396,910	$ 28,539,883	$ 37,101,586

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Procurement Contract and Research Agreements (Details) contract in Millions, $ in Millions					3 Months Ended
	Mar. 31, 2019 USD ($) course	Feb. 21, 2019 USD ($)	Sep. 10, 2018 USD ($) course step	May 13, 2011 USD ($) course	Mar. 31, 2019 USD ($) course contract
Procurement Contract [Line Items]
Number of courses to be delivered | course			1,488,000
Number of courses stored as vendor-managed inventory | course			212,000
Value of contract			$ 600.1	$ 508.7	$ 32.0
Government contract base value award for delivery and support activities			51.7
Government contract, base value of award for delivery of courses			$ 11.1
Number of courses delivered, options, final drug product | course			35,700
Payments for final drug product			$ 8.0
Number of courses manufactured, options, final drug product | course					20,000
Government contract, number of payments to be paid upon delivery of bulk drug substance					$ 3.2
Government contract, payments for supportive procurement activities			$ 0.6
Proceeds for delivery of courses	$ 7.1
Number of courses that payment was received for | course	23,000
Number of primary manufacturing steps | step			2
Number of courses under modified contract | contract					1.7
Government contract, number of additional courses purchased under modified contract | course				300,000
Proceeds from manufacture and physical delivery of courses, government contract	$ 459.8				$ 459.8
Amount received from contract for development and support activities	44.3				44.3
Contract value, option, FDA approval					50.0
Contract value of various options				$ 72.7
Contract value, detail of option exercisable, development activities		$ 12.2		58.3
Contract value, detail of option exercisable, production activities			$ 536.2	$ 14.4
Research and development, future aggregate amount	5.2				$ 5.2
BARDA Contract
Procurement Contract [Line Items]
Number of courses delivered, options, final drug product | course			1,452,300
Number of courses manufactured, options, final drug product | course			192,000		64,000
Government contract, number of payments to be paid upon delivery of bulk drug substance			$ 30.7
Payments for funding post marketing activities					$ 12.2
Government contract, option value for delivery and courses			450.2
Government contract, payments to manufacture courses			77.0
Contract value of development and support activities			5.6
Amount eligible to be received in the future for reimbursements of development and supportive activities	$ 4.6				$ 4.6
Contract value, detail of option exercisable, development activities			3.6
IV BDS Options & IV FDP Options | BARDA Contract
Procurement Contract [Line Items]
Government contract, options, payments for exercise of options			$ 76.8

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Inventory (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Work in process	$ 1,948,856	$ 1,950,445
Finished goods	68,221	957,765
Inventory	$ 2,017,077	$ 2,908,210

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Property, Plant and Equipment (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Property, Plant and Equipment [Abstract]
Leasehold improvements	$ 2,420,028		$ 2,420,028
Computer equipment	581,654		618,248
Furniture and fixtures	377,859		377,859
Operating lease right of use asset	2,944,932		0
Property, plant and equipment, gross	6,324,473		3,416,135
Accumulated depreciation, depletion and amortization, property, plant, and equipment	(3,337,041)		(3,244,861)
Property, plant and equipment, net	2,987,432		$ 171,274
Depreciation and other amortization	$ 137,724	$ 29,790

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Accrued Expenses and Other Current Liabilities (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018
Payables and Accruals [Abstract]
Bonus	$ 764,059	$ 2,600,839
Deferred revenue	5,437,774	4,159,946
Interest payable	1,003,911	35,567
Research and development vendor costs	628,565	1,446,410
Professional fees	497,276	242,043
Vacation	348,167	294,794
Other	1,277,984	869,318
Accrued expenses and other current liabilities	$ 9,957,736	$ 9,648,917

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Financial Instruments - Narrative (Details)		3 Months Ended
	Sep. 02, 2016 USD ($) $ / shares shares	Mar. 31, 2019 USD ($) shares	Mar. 31, 2018 USD ($)	Dec. 31, 2018 USD ($)
Class of Warrant or Right [Line Items]
Fair value of warrant		$ 8,071,873		$ 12,380,939
Gain (loss) from change in fair value of warrant liability		3,136,265	$ (3,303,114)
Warrants
Class of Warrant or Right [Line Items]
Value of common stock issued, exercise of warrants	$ 4,000,000
Exercise price of warrants to purchase common stock | $ / shares	$ 2.29
Exercisable period for warrants (in years)	10 years
Fair value of warrant		$ 8,100,000
Warrants, measurement input		0.02
Warrants, term		7 years 5 months 1 day
Subscription Right
Class of Warrant or Right [Line Items]
Exercise price of warrants to purchase common stock | $ / shares	$ 1.50
Dividend Yield | Warrants
Class of Warrant or Right [Line Items]
Warrants, measurement input		0
Volatility | Warrants
Class of Warrant or Right [Line Items]
Warrants, measurement input		0.70
Warrants
Class of Warrant or Right [Line Items]
Warrants outstanding | shares	2,700,000
Warrants
Class of Warrant or Right [Line Items]
Warrants outstanding | shares		1,500,000.0
Fair value of warrant	$ 5,800,000	$ 8,100,000

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Debt - Narrative (Details) - USD ($)		3 Months Ended	12 Months Ended
	Oct. 31, 2018	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Jul. 12, 2018	Sep. 02, 2016
Debt Instrument [Line Items]
Proceeds from sale of priority review voucher	$ 78,300,000
Fair value of warrant		$ 8,071,873		$ 12,380,939
London Interbank Offered Rate (LIBOR) | Loan Agreement
Debt Instrument [Line Items]
Margin for term loan		11.50%
Effective interest rate (as a percent)		19.35%
Warrants
Debt Instrument [Line Items]
Fair value of warrant		$ 8,100,000				$ 5,800,000
Secured Debt | Loan Agreement
Debt Instrument [Line Items]
Line of credit facility		80,000,000				80,000,000
Additional borrowing capacity		5,000,000
Interest expense, debt		3,900,000
Interest expense accreted to balance		1,100,000
Cash withdrawn from reserve account					$ 5,000,000
Fees and expenses		$ 4,000,000
Potential increase in interest rate		2.00%
Minimum cash requirement				$ 5,000,000
Costs incurred						$ 8,200,000
Remaining borrowing capacity		$ 76,700,000
Secured Debt | US Treasury Rate | Loan Agreement
Debt Instrument [Line Items]
Margin for term loan		0.50%
Secured Debt | Repayment of Interests | Loan Agreement
Debt Instrument [Line Items]
Capacity available for specific purpose other than for trade purchases		$ 25,000,000
Secured Debt | Payments Related to Litigation | Loan Agreement
Debt Instrument [Line Items]
Capacity available for specific purpose other than for trade purchases		$ 50,000,000
Forecast | Secured Debt | Loan Agreement
Debt Instrument [Line Items]
Minimum cash requirement			$ 20,000,000

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Fair Value of Financial INstruments - Narrative (Details) - USD ($)	Mar. 31, 2019	Dec. 31, 2018	Sep. 02, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of warrant	$ 8,071,873	$ 12,380,939
Loan outstanding	76,656,511	$ 75,547,597
Warrants
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of warrant	8,100,000		$ 5,800,000
Senior Secured Term Loan
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan outstanding	76,700,000
Fair Value, Measurements, Recurring | Senior Secured Term Loan | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan outstanding	$ 87,500,000

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Fair Value of Financial INstruments - Change in Level 3 Liability (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)
Fair Value Disclosures [Abstract]
Warrant liability at December 31, 2018	$ 12,380,939
Decrease in fair value of warrant liability	(3,136,265)
Exercise of warrants	(1,172,801)
Warrant liability at March 31, 2019	$ 8,071,873

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Per Share Data - Earnings per Share Reconciliation (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net (loss) income for basic earnings per share	$ 1,629,777	$ (11,582,256)
Net income (loss) for basic earnings per share	(3,136,265)	3,303,114
Net loss, adjusted for change in fair value of warrants for diluted earnings per share	$ (1,506,488)	$ (11,582,256)
Weighted average shares outstanding: basic	80,913,320	79,039,000
Effect of potential common shares	1,225,788	0
Weighted average shares outstanding: diluted	82,139,108	79,039,000
Earning (Loss) earning per share: basic	$ 0.02	$ (0.15)
(Loss) earning per share: diluted	$ (0.02)	$ (0.15)

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Per Share Data - Antidilutive Securities (Details) - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Stock Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	377,011	1,062,467
Stock-Settled Stock Appreciation Rights
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	6,756	162,393
Restricted Stock Units (1)
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	509,411	1,472,001
Options vested, exercisable (shares)		294,118
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average	0	2,690,950

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Related Party Transactions - Narrative (Details)			1 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended
	Jul. 31, 2017 USD ($)	May 26, 2017 USD ($) ft²	May 31, 2017 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2018 USD ($)	Oct. 13, 2018 USD ($)	Jan. 09, 2013 ft²
Related Party Transaction [Line Items]
Related party transaction, due to related party								$ 200,000
Related party transaction, expenses from transactions with related party				$ 50,000
Member of Board of Directors
Related Party Transaction [Line Items]
Legal fees				113,000	$ 107,000
Accounts payable to related party				39,000
MacAndrews & Forbes
Related Party Transaction [Line Items]
Area of real estate property (in sq ft) | ft²									6,676
Rent expense, sublease rentals, net	$ 2,000,000
Rent expense, sublease rentals, estimate	2,400,000
New HQ Lease | MacAndrews & Forbes
Related Party Transaction [Line Items]
Lessee, operating lease, term (years)		10 years
Area of real estate property (in sq ft) | ft²		3,200
Monthly rental payments for initial period		$ 25,333
Monthly rental payments after initial period		29,333
Additional facility fee		$ 3,333
Facility fee annual increase, percent			500.00%
Facility fee after initial period			$ 0
Old HQ Subleas
Related Party Transaction [Line Items]
Business exit cost						$ 1,100,000
Write down of leasehold improvements and furniture							$ 100,000
Old HQ Subleas | MacAndrews & Forbes
Related Party Transaction [Line Items]
Monthly rental payments for initial period	60,000
Monthly rental payments after initial period	63,400
Rent discrepancy, sublease rentals	1,100,000
Replacement M&F Sublease | MacAndrews & Forbes
Related Party Transaction [Line Items]
Monthly rental payments for initial period	36,996
Monthly rental payments after initial period	$ 37,831
Free rent period	2 months
Initial rent period	12 months
Monthly rental payments after secondary period	$ 38,665
Rent expense, sublease rentals	$ 900,000
Other Liabilities
Related Party Transaction [Line Items]
Lease termination liability				$ 100,000

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Related Party Transactions - Related Party Activity (Details)	3 Months Ended
	Mar. 31, 2019 USD ($)
Restructuring Reserve [Roll Forward]
Balance at December 31, 2018	$ 509,937
Charges (included in selling, general and administrative expenses)	9,189
Cash payments, net of sublease income	(87,875)
Balance at March 31, 2019	$ 431,251

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Income Taxes - Narrative (Details)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Effective income tax rate (percent)	23.70%	0.02%

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Equity - Changes in Stockholders' Equity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Stockholders' Equity (shares)	80,763,350
Total Stockholders' Equity	$ 102,914,687	$ (323,138,291)
Net Income (loss)	1,629,777	(11,582,256)
Issuance of common stock upon exercise of stock options	0
Issuance of common stock upon exercise of stock-settled appreciation rights	0
Issuance of common stock upon exercise of warrants	1,172,801
Payment of common stock tendered for employee stock-based compensation tax obligations	(56,590)	0
Cumulative effect of accounting change			$ (223,313)
Stock-based compensation	$ 408,894	327,360
Total Stockholders' Equity (shares)	80,763,350
Total Stockholders' Equity	$ 106,069,569	$ (334,616,500)
Common Stock
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Stockholders' Equity (shares)	80,763,350	79,039,000
Total Stockholders' Equity	$ 8,076	$ 7,904
Issuance of common stock upon exercise of stock options (shares)	9,769
Issuance of common stock upon exercise of stock options	$ 1
Issuance of common stock upon exercise of stock-settled appreciation rights (shares)	16,771
Issuance of common stock upon exercise of stock-settled appreciation rights	$ 2
Issuance of common stock upon exercise of warrants (shares)	159,782
Issuance of common stock upon exercise of warrants	$ 16
Payment of common stock tendered for employee stock-based compensation tax obligations (shares)	(8,148)
Payment of common stock tendered for employee stock-based compensation tax obligations	$ (1)
Total Stockholders' Equity (shares)	80,941,524	79,039,000
Total Stockholders' Equity	$ 8,094	$ 7,904
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Stockholders' Equity	218,697,872	214,229,581
Issuance of common stock upon exercise of stock options	(1)
Issuance of common stock upon exercise of stock-settled appreciation rights	(2)
Issuance of common stock upon exercise of warrants	1,172,785
Payment of common stock tendered for employee stock-based compensation tax obligations	(56,589)
Stock-based compensation	408,894	327,360
Total Stockholders' Equity	220,222,959	214,556,941
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Stockholders' Equity	(115,791,261)	(537,375,776)
Net Income (loss)	1,629,777	(11,582,256)
Cumulative effect of accounting change			$ (223,313)
Stock-based compensation		0
Total Stockholders' Equity	(114,161,484)	(549,181,345)
Other Comprehensive Income
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total Stockholders' Equity	0	0
Stock-based compensation		0
Total Stockholders' Equity	$ 0	$ 0

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Leases - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) option	Mar. 31, 2018 USD ($)	May 26, 2017 ft²	Jan. 09, 2013 ft²
Lessee, Lease, Description [Line Items]
Number of renewal options | option	2
Operating lease, cost | $	$ 0.1	$ 0.1
Operating lease, payments | $	$ 0.1	$ 0.1
Operating lease, weighted average remaining lease term (years)	6 years 9 months 22 days
Operating lease, weighted average discount rate (percent)	4.53%
MacAndrews & Forbes
Lessee, Lease, Description [Line Items]
Area of real estate property (in sq ft) | ft²				6,676
New HQ Lease | MacAndrews & Forbes
Lessee, Lease, Description [Line Items]
Lessee, operating lease, term (years)			10 years
Area of real estate property (in sq ft) | ft²			3,200
One
Lessee, Lease, Description [Line Items]
Length of renewal options (years)	2 years
Two
Lessee, Lease, Description [Line Items]
Length of renewal options (years)	3 years

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Leases - Future Undiscounted Cash Flows Under Operating Leases (Details)	Mar. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
2019	$ 438,618
2020	591,108
2021	600,362
2022	368,467
2023	402,078
Thereafter	1,387,139
Total undiscounted cash flows under leases	3,787,772
Less: Imputed interest	(587,491)
Present value of lease liabilities	3,200,281
Other Liabilities
Lessee, Lease, Description [Line Items]
Present value of lease liabilities	$ 2,800,000

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Leases - Future Minimum Cash Rental Commitments (Details)	Dec. 31, 2018 USD ($)
Leases [Abstract]
2019	$ 541,376
2020	304,000
2021	304,000
2022	320,774
2023	352,000
Thereafter	1,197,778
Total	$ 3,019,928