10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, 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 June 30, 2018

OR

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

For the transition period from to

Commission file number 001-32954

CLEVELAND BIOLABS, INC.

(Exact name of registrant as specified in its charter)

DELAWARE	20-0077155
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
73 High Street, Buffalo, New York	14203
(Address of principal executive offices)	(Zip Code)

(716) 849-6810

(Registrant’s telephone number, including area code) 

N/A

(Former name, former address and former fiscal year, if changed since last report)

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 and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes  x   No  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, 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. (Check one):

Large accelerated filer	¨	Accelerated filer	¨
Non-accelerated filer	¨	Smaller reporting company	x
Emerging Growth Company	¨

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

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

As of July 31, 2018, there were 11,298,239 shares outstanding of the registrant’s common stock, par value $0.005 per share.

TABLE OF CONTENTS

		PAGE
PART I – FINANCIAL INFORMATION
ITEM 1.	Consolidated Condensed Financial Statements
	Consolidated Condensed Balance Sheets	4
	Consolidated Condensed Statements of Operations	5
	Consolidated Condensed Statements of Comprehensive Loss	6
	Consolidated Condensed Statement of Stockholders’ Equity	7
	Consolidated Condensed Statements of Cash Flows	8
	Notes to Consolidated Condensed Financial Statements	9
ITEM 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	16
ITEM 3.	Quantitative and Qualitative Disclosures About Market Risk	22
ITEM 4.	Controls and Procedures	23
PART II – OTHER INFORMATION
ITEM 1.	Legal Proceedings	23
ITEM 1A.	Risk Factors	23
ITEM 2.	Unregistered Sales 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

In this Quarterly Report on Form 10-Q, unless otherwise stated or the context otherwise requires, the terms "Cleveland BioLabs," the "Company," "CBLI," "we," "us" and "our" refer to Cleveland BioLabs, Inc. and its consolidated subsidiaries, BioLab 612, LLC and Panacela Labs, Inc. Our common stock, par value $0.005 per share, is referred to as "common stock."

3

CLEVELAND BIOLABS, INC. AND SUBSIDIARIES

CONSOLIDATED CONDENSED BALANCE SHEETS

(UNAUDITED)

	June 30, 2018			December 31, 2017
	(Unaudited)
ASSETS
Current assets:
Cash and cash equivalents	$	4,007,114		$	4,230,548
Short-term investments	2,520,376			4,561,357
Accounts receivable	346,012			554,468
Other current assets	121,565			233,617
Total current assets	6,995,067			9,579,990
Equipment, net	27,512			18,588
Other long-term assets	33,786			30,684
Total assets	$	7,056,365		$	9,629,262
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	151,887		$	201,396
Accrued expenses	1,281,962			970,547
Accrued warrant liability	362,842			1,041,455
Total current liabilities	1,796,691			2,213,398
Non-current liabilities	—			7,494
Total liabilities	1,796,691			2,220,892
Stockholders’ equity:
Preferred stock, $.005 par value; 1,000,000 shares authorized as of June 30, 2018 and December 31, 2017, respectively, 0 shares issued and outstanding as of June 30, 2018 and December 31, 2017	—			—
Common stock, $.005 par value; 25,000,000 shares authorized as of June 30, 2018 and December 31, 2017, respectively, 11,298,239 and 11,279,834 shares issued and outstanding as of June 30, 2018 and December 31, 2017, respectively	56,487			56,395
Additional paid-in capital	163,161,523			163,106,400
Other comprehensive loss	(565,096		)	(516,457		)
Accumulated deficit	(162,522,259		)	(160,446,612		)
Total Cleveland BioLabs, Inc. stockholders’ equity	130,655			2,199,726
Noncontrolling interest in stockholders’ equity	5,129,019			5,208,644
Total stockholders’ equity	5,259,674			7,408,370
Total liabilities and stockholders’ equity	$	7,056,365		$	9,629,262

See Notes to Consolidated Financial Statements

4

CLEVELAND BIOLABS, INC. AND SUBSIDIARIES

CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS

(UNAUDITED)

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2018			2017			2018			2017
Revenues:
Grants and contracts	$	391,591		$	206,156		$	619,167		$	781,130
Operating expenses:
Research and development	908,907			1,188,380			2,245,377			2,605,378
General and administrative	550,743			588,288			1,277,936			1,365,712
Total operating expenses	1,459,650			1,776,668			3,523,313			3,971,090
Loss from operations	(1,068,059		)	(1,570,512		)	(2,904,146		)	(3,189,960		)
Other income (expense):
Interest and other income	23,924			50,434			93,400			99,723
Foreign exchange gain (loss)	1,479			(4,055		)	1,096			(12,285		)
Change in value of warrant liability	170,071			(4,124,009		)	678,613			(4,245,707		)
Total other income (expense)	195,474			(4,077,630		)	773,109			(4,158,269		)
Net loss	(872,585		)	(5,648,142		)	(2,131,037		)	(7,348,229		)
Net loss attributable to noncontrolling interests	21,548			35,354			55,390			71,747
Net loss attributable to Cleveland BioLabs, Inc.	$	(851,037	)	$	(5,612,788	)	$	(2,075,647	)	$	(7,276,482	)
Net loss attributable to common stockholders per share of common stock, basic and diluted	$	(0.08	)	$	(0.50	)	$	(0.18	)	$	(0.66	)
Weighted average number of shares used in calculating net loss per share, basic and diluted	11,298,239			11,218,727			11,289,396			11,103,586

See Notes to Consolidated Financial Statements

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CLEVELAND BIOLABS, INC. AND SUBSIDIARIES

CONSOLIDATED CONDENSED STATEMENTS OF COMPREHENSIVE LOSS

(UNAUDITED)

	For the Three Months Ended June 30,						For the Six Months Ended June 30,
	2018			2017			2018			2017
Net loss including noncontrolling interests	$	(872,585	)	$	(5,648,142	)	$	(2,131,037	)	$	(7,348,229	)
Other comprehensive loss:
Unrealized gain (loss) on short-term investments	501			(292		)	1,978			(3,410		)
Foreign currency translation adjustment	(81,725		)	(60,348		)	(74,852		)	42,187
Comprehensive loss including noncontrolling interests	(953,809		)	(5,708,782		)	(2,203,911		)	(7,309,452		)
Comprehensive loss attributable to noncontrolling interests	47,975			54,575			79,625			58,529
Comprehensive loss attributable to Cleveland BioLabs, Inc.	$	(905,834	)	$	(5,654,207	)	$	(2,124,286	)	$	(7,250,923	)

See Notes to Consolidated Financial Statements

6

CLEVELAND BIOLABS, INC. AND SUBSIDIARIES

CONSOLIDATED CONDENSED STATEMENT OF STOCKHOLDERS’ EQUITY

(UNAUDITED)

	Common Stock			Treasury Stock			Additional Paid-In Capital
	Shares	Amount		Shares	Amount
Balance at December 31, 2017	11,279,834	$	56,395	—	$	—	$	163,106,400
Exercise of warrants	18,405	92		—	—		55,123
Net loss	—	—		—	—		—
Unrealized loss on short-term investments	—	—		—	—		—
Foreign currency translation	—	—		—	—		—
Balance at June 30, 2018	11,298,239	$	56,487	—	$	—	$	163,161,523

	Accumulated Other Comprehensive Income (Loss)			Accumulated Deficit			Noncontrolling Interests			Total
Balance at December 31, 2017	$	(516,457	)	$	(160,446,612	)	$	5,208,644		$	7,408,370
Exercise of warrants	—			—			—			55,215
Net loss	—			(2,075,647		)	(55,390		)	(2,131,037		)
Unrealized loss on short-term investments	1,978			—			—			1,978
Foreign currency translation	(50,617		)	—			(24,235		)	(74,852		)
Balance at June 30, 2018	$	(565,096	)	$	(162,522,259	)	$	5,129,019		$	5,259,674

See Notes to Consolidated Financial Statements

7

CLEVELAND BIOLABS, INC. AND SUBSIDIARIES

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS

(UNAUDITED)

	For the Six Months Ended June 30,
	2018			2017
Cash flows from operating activities:
Net loss	$	(2,131,037	)	$	(7,348,229	)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	9,570			11,641
Non-cash investment income	(22,416		)	(29,527		)
Gain on equipment disposal	(35,274		)	(6,727		)
Change in value of warrant liability	(678,613		)	4,245,707
Changes in operating assets and liabilities:
Accounts receivable and other current assets	319,227			(77,375		)
Other long-term assets	(3,505		)	—
Accounts payable and accrued expenses	260,073			(694,170		)
Net cash used in operating activities	(2,281,975		)	(3,898,680		)
Cash flows from investing activities:
Purchase of short-term investments	(4,149,031		)	(4,594,890		)
Sale of short-term investments	6,145,088			5,460,087
Purchase of equipment	(19,011		)	—
Proceeds from sale of equipment	35,770			8,970
Net cash provided by investing activities	2,012,816			874,167
Cash flows from financing activities:
Exercise of warrants	55,215			—
Net cash provided by financing activities	55,215			—
Effect of exchange rate change on cash and equivalents	(9,490		)	54,698
Decrease in cash and cash equivalents	(223,434		)	(2,969,815		)
Cash and cash equivalents at beginning of period	4,230,548			6,901,816
Cash and cash equivalents at end of period	$	4,007,114		$	3,932,001
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	$	—		$	—
Supplemental schedule of noncash financing activities:
Noncash financing costs on common stock offering	$	—		$	4,334,110

See Notes to Consolidated Financial Statements

8

CLEVELAND BIOLABS, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED CONDENSED FINANCIAL STATEMENTS

(UNAUDITED)

1. Description of Business

Cleveland BioLabs, Inc. ("CBLI" or the " Company") is an innovative biopharmaceutical company developing novel approaches to activate the immune system and address serious medical needs. Our proprietary platform of Toll-like immune receptor ("TLR") activators has applications in radiation protection and immuno-oncology. We combine our proven scientific expertise and our depth of knowledge about our products’ mechanisms of action into a passion for developing drugs to save lives. Our most advanced product candidate is entolimod, an immune-stimulatory agent, which we are developing as a medical radiation countermeasure and an immunotherapy for oncology and other indications.

CBLI was incorporated in Delaware in June 2003 and is headquartered in Buffalo, New York. CBLI conducts business in the United States ("U.S.") and in the Russian Federation ("Russia"), through two subsidiaries: one wholly-owned subsidiary, BioLab 612, LLC ("BioLab 612"), which began operations in 2012; and Panacela Labs, Inc. ("Panacela"), which was formed by us and Joint Stock Company "RUSNANO" ("RUSNANO"), our financial partner in the venture, in 2011. Unless otherwise noted, references to the "Company," "we," "us," and "our" refer to Cleveland BioLabs, Inc. together with its subsidiaries.

2. Summary of Significant Accounting Policies

Basis of Presentation and Consolidation

The accompanying unaudited consolidated condensed financial statements include the accounts of CBLI, BioLab 612, and Panacela. All significant intercompany balances and transactions have been eliminated in consolidation.

The consolidated condensed balance sheet as of December 31, 2017, which has been derived from audited financial statements, and the unaudited interim consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") for interim consolidated financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These consolidated condensed financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the SEC (the "2017Form 10-K").

In the opinion of the Company’s management, any adjustments contained in the accompanying unaudited consolidated financial statements are of a normal recurring nature, and are necessary to fairly present the financial position of the Company as of June 30, 2018, along with its results of operations for the three and six month periods ended June 30, 2018 and 2017 and cash flows for the six month periods ended June 30, 2018 and 2017. Interim results are not necessarily indicative of results that may be expected for any other interim period or for an entire year.

At June 30, 2018, we had cash, cash equivalents and short-term investments of $6.5 million in the aggregate. Management believes this capital will fund the Company's operations and cash requirements for at least 12 months beyond the filing date of this Quarterly Report on Form 10-Q.

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB") or other standard-setting bodies that are adopted by us as of the specified effective date. Unless otherwise discussed, we believe that the impact of recently issued standards that are not yet effective will not have a material impact on our financial position or results of operations upon adoption.

In May 2017, the FASB issued ASU No. 2017-09, "Scope of Modification Accounting" ("ASU 2017-09"), which amends the scope of modification accounting for share-based payment arrangements. The ASU provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. ASU 2017-09 is applied prospectively to awards modified on or after the effective date. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

9

In November 2016, the FASB issued ASU 2016-18, "Statement of Cash Flows (Topic 230): Restricted Cash" ("ASU 2016-18"). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In May 2014, the FASB issued ASU 2014-9, "Revenue from Contracts with Customers" ("ASU 2014-09"), which updates the principles for recognizing revenue. ASU 2014-9 also amends the required disclosures of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In May 2016, the FASB issued ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow Scope Improvements and Practical Expedients" ("ASU 2016-12"). The amendments in ASU 2016-12 affect the guidance in ASU 2014-09 by clarifying certain specific aspects of the guidance, including assessment of collectability, treatment of sales taxes and contract modifications, and providing certain technical corrections. The pronouncement has the same effective date as ASU 2014-09, which is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements. 

In April 2016, the FASB issued ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing" ("ASU 2016-10") related to identifying performance obligations and licensing. ASU 2016-10 is meant to clarify the guidance in FASB ASU 2014-09, "Revenue from Contracts with Customers." Specifically, ASU 2016-10 addresses an entity’s identification of its performance obligations in a contract, as well as an entity’s evaluation of the nature of its promise to grant a license of intellectual property and whether or not that revenue is recognized over time or at a point in time. The pronouncement has the same effective date as ASU 2014-09, which is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)" ("ASU 2016-02"). ASU 2016-02 will require organizations that lease assets with lease terms of more than 12 months to recognize assets and liabilities for the rights and obligations created by those leases on their balance sheets. The ASU will also require new qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 will be effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company expects to adopt this guidance when effective and is currently evaluating the effect that the updated standard will have on its consolidated balance sheets and related disclosures.

In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities" ("ASU 2016-01"). The pronouncement requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset, and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Short-Term Investments

The Company’s short-term investments are classified as available for sale recorded at fair value, and held to maturity recorded at amortized cost. Accordingly, these investments are carried at fair market value. Short-term investments consisted of U.S. Treasury securities in the amount of $1.8 million which were owned by CBLI and had maturities of less than 12 months. In

10

addition, $0.7 million in certificates of deposit with maturity dates beyond three months and less than one year, and owned by Panacela, are also included. These investments are classified as held to maturity given the intent and ability to hold the investments to maturity. Unrealized gains and losses on available for-sale investments are reported as Other Comprehensive Loss, a separate component of stockholders’ equity. Realized gains and losses, and interest and dividends on available-for-sale securities are recorded in our Consolidated Statement of Operations as Interest and Other Income. The cost of securities sold is based on the specific identification method.

Significant Customers and Accounts Receivable

The following table presents our revenue by customer, on a proportional basis, for the three and six months ended June 30, 2018 and 2017.

	Three Months Ended June 30,						Six Months Ended June 30,
Customer	2018		2017		Variance		2018		2017		Variance
Department of Defense	49.1	%	63.4	%	(14.3	)%	52.9	%	70.3	%	(17.4	)%
Incuron	50.9	%	36.6	%	14.3	%	47.1	%	29.7	%	17.4	%
Total	100.0	%	100.0	%	—	%	100.0	%	100.0	%	—	%

Our current Department of Defense ("DOD") revenues come from development contracts that expire in 2019 and 2018, although each contract may be extended. Our Incuron revenues come from a service agreement that is renegotiated annually.

Accounts receivable consist of amounts due under reimbursement contracts with these customers. The Company extends unsecured credit to customers under normal trade agreements, which generally require payment within 30 days.

Other Comprehensive Income (Loss)

The Company applies the Accounting Standards Codification ("Codification") on comprehensive income (loss) that requires disclosure of all components of comprehensive income (loss) on an annual and interim basis. Other comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. The following table presents the changes in accumulated other comprehensive loss for the six months endedJune 30, 2018.

	Unrealized income (loss) on available-for-sale securities			Gains and losses on foreign exchange translations			Total
Beginning balance	$	(1,924	)	$	(514,533	)	$	(516,457	)
Other comprehensive income (loss) before reclassifications	1,978			(50,617		)	(48,639		)
Amounts reclassified from accumulated other comprehensive loss	—			—			—
Ending balance	$	54		$	(565,150	)	$	(565,096	)

Accounting for Stock-Based Compensation

The Cleveland Biolabs, Inc. Equity Incentive Plan, adopted in 2018 (the "Plan"), authorizes CBLI to grant (i) options to purchase common stock, (ii) restricted or unrestricted stock units, and (iii) stock appreciation rights, so long as the exercise or grant price of each are at least equal to the fair market value of the stock on the date of grant. As of June 30, 2018, an aggregate of 424,926 shares of common stock were authorized for issuance under the Plan, all of which a total of 424,926 shares of common stock remained available for future awards. In addition, a total of 172,631 shares of common stock have been reserved for issuance were subject to currently outstanding stock options granted under The Cleveland BioLabs, Inc. Equity Incentive Plan, as in effect prior to the 2018 amendment and restatement. A single participant cannot be awarded more than 100,000 shares annually. Awards granted under the Plan have a contractual life of no more than 10 years. The terms and

11

conditions of equity awards (such as price, vesting schedule, term, and number of shares) under the Plan are specified in an award document, and approved by the Company’s board of directors or its management delegates.

The 2013 Employee Stock Purchase Plan (the "ESPP") provides a means by which eligible employees of the Company and certain designated related corporations may be given an opportunity to purchase shares of common stock. As of June 30, 2018, there are 525,000 shares of common stock reserved for purchase under the ESPP. The number of shares reserved for purchase under the ESPP increases on January 1 of each calendar year by the lesser of: (i) 10% of the total number of shares of common stock outstanding on December 31st of the preceding year, or (ii) 100,000 shares of common stock. The ESPP allows employees to use up to 15% of their compensation to purchase shares of common stock at an amount equal to 85% of the fair market value of the Company’s common stock on the offering date or the purchase date, whichever is less.

The Company utilizes the Black-Scholes valuation model for estimating the fair value of all stock options granted where the vesting period is based on length of service or performance, while a Monte Carlo simulation model is used for estimating the fair value of stock options with market-based vesting conditions. No options were granted during the six months endedJune 30, 2018 and June 30, 2017.

Income Taxes

No income tax expense was recorded for the three and six months ended June 30, 2018 and 2017, as the Company does not expect to have taxable income for 2018 and did not have taxable income in 2017. A full valuation allowance has been recorded against the Company’s deferred tax asset.

Additionally, as disclosed in Note 7, Income Taxes, to the Company’s consolidated financial statements included in the 2017 Form 10-K, the Company had U.S. federal net operating loss carryforwards of approximately $139,700,000, which begin to expire if not utilized by 2023, and approximately $4,046,000 of tax credit carryforwards which begin to expire if not utilized by 2024. The Company also has U.S. state net operating loss carryforwards of approximately $84,200,000, which begin to expire if not utilized by 2027 and state tax credit carryforwards of approximately $311,000, which begin to expire if not utilized by 2022. The purchase of 6,459,948 shares of common stock by David Davidovich, our majority stockholder, on July 9, 2015 resulted in Mr. Davidovich owning 60.2% of the Company at that time. We therefore believe it highly likely that this transaction, more fully described in Note 7, Income Taxes, to the Company's consolidated financial statements included in the 2017 Form 10-K, will be viewed by the U.S. Internal Revenue Service as a change of ownership as defined by Section 382 of the Internal Revenue Code, or Section 382. Consequently, the utilization of these net operating loss and tax credit carryforwards, as well as any additional net operating loss and tax credit carryforwards generated in 2015 through the issuance date, will be limited according to the provisions of Section 382, which will significantly limit the Company’s ability to use these carryforwards to offset taxable income on an annual basis in future periods. As such, a significant portion of these carryforwards will likely expire before they can be utilized, even if the Company is able to generate taxable income that, except for this transaction, would have been sufficient to fully utilize these carryforwards.

Earnings (Loss) per Share

Basic net loss per share of common stock excludes dilution for potential common stock issuances and is computed by dividing net loss by the weighted average number of shares outstanding for the period. Diluted net loss per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. Diluted net loss per share is identical to basic net loss per share as potentially dilutive securities have been excluded from the calculation of diluted net loss per common share because the inclusion of such securities would be antidilutive.

The Company has excluded the following securities from the calculation of diluted net loss per share because all such securities were antidilutive for the periods presented. Additionally, there were no dilutive securities outstanding as of June 30, 2018.

	As of June 30,
Common Equivalent Securities	2018	2017
Warrants	535,867	925,812
Options	172,631	217,921
Total	708,498	1,143,733

Contingencies

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From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of business. The Company accrues for liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. For all periods presented, the Company was not a party to any pending material litigation that was estimable and had a probability of loss.

3. Fair Value of Financial Instruments

The Company measures and records warrant liabilities at fair value in the accompanying financial statements. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability, an exit price, in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value, includes:

• Level 1 – Observable inputs for identical assets or liabilities such as quoted prices in active markets;

• Level 2 – Inputs other than quoted prices in active markets that are either directly or indirectly observable; and

• Level 3 – Unobservable inputs in which little or no market data exists, which are therefore developed by the Company using estimates and assumptions that reflect those that a market participant would use.

Cash equivalents include United States Treasury Notes with original maturities of three months or less, at time of purchase and money market funds. Short-term investments primarily include United States Treasury Notes, along with certificates of deposit at commercial banking institutions, both with maturities of three months or more at time of purchase.

The valuation methodologies used to measure the fair value of the Company’s assets and instruments classified in stockholders’ equity are described as follows: U.S. Treasury Notes and money market funds included in cash equivalents and short-term investments are valued at the closing price reported by an actively traded exchange and are included as Level 1 measurements in the table below. Certificates of deposit are carried at amortized cost, which approximates fair value and are included within short-term investments as a Level 2 measurement in the table below.

The following tables represent the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis.

	As of June 30, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	77,343	$	—	$	—	$	77,343
Short-term investments	1,803,319		717,057		—		2,520,376
Total assets	$	1,880,662	$	717,057	$	—	$	2,597,719
Liabilities:
Accrued warrant liability	$	—	$	—	$	362,842	$	362,842

	As of December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	551,088	$	—	$	—	$	551,088
Short-term investments	3,606,499		954,858		—		4,561,357
Total assets	$	4,157,587	$	954,858	$	—	$	5,112,445
Liabilities:
Accrued warrant liability	$	—	$	—	$	1,041,455	$	1,041,455

The Company uses the Black-Scholes model to measure the accrued warrant liability. The following are the assumptions used to measure the accrued warrant liability which were determined in a manner consistent with grants of options to purchase common stock:

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	June 30, 2018			December 31, 2017
Stock Price	$	2.46		$	4.01
Exercise Price	$3.64  - $24.40			$ 3.00 - 24.40
Term in years	0.54 – 3.10			0.25 - 3.60
Volatility	52.63%  - 103.38%			71.48 - 139.58%
Annual rate of quarterly dividends	—		%	—		%
Discount rate- bond equivalent yield	1.27% - 2.64%			0.44 - 2.05%

The following table sets forth a summary of changes in the fair value of the Company’s Level 3 fair value measurements for the periods indicated:

	Three Months Ended June 30, 2018			Three Months Ended June 30, 2017
	Accrued Warrant Liability			Accrued Warrant Liability
Beginning Balance	$	532,913		$	1,071,117
Total (gains) or losses, realized and unrealized, included in earnings (1)	(170,071		)	4,124,009
Issuances	—			—
Settlements	—			(4,334,110		)
Ending Balance	$	362,842		$	861,016

	Six Months Ended June 30, 2018			Six Months Ended June 30, 2017
	Accrued Warrant Liability			Accrued Warrant Liability
Beginning Balance	$	1,041,455		$	949,419
Total (gains) or losses, realized and unrealized, included in earnings (1)	(678,613		)	4,245,707
Issuances	—			—
Settlements	—			(4,334,110		)
Ending Balance	$	362,842		$	861,016

(1) Unrealized gains or losses related to the accrued warrant liability were included as change in value of accrued warrant liability. There were no realized gains or losses for the three and six months ended June 30, 2018 and 2017.

As of June 30, 2018 and December 31, 2017, the Company had no assets or liabilities that were measured at fair value on a nonrecurring basis.

The Company considers the accrued warrant liability to be Level 3 because some of the inputs into the measurements are neither directly or indirectly observable. The accrued warrant liability uses management’s estimate for the expected term. As of June 30, 2018, the Black-Scholes pricing model was used as the valuation technique for the accrued warrant liability and used the unobservable input for the expected term of 0.54 – 3.10 years.

Management believes the value of the accrued warrant liability is more sensitive to a change in the Company’s stock price at the end of the respective reporting period as opposed to a change in the unobservable input described above.

The carrying amounts of the Company’s short-term financial instruments, which include cash and cash equivalents, accounts receivable and accounts payable, approximate their fair values due to their short maturities.

4. Stockholders’ Equity

The Company has granted options to purchase shares of common stock. The following is a summary of option award activity during the six months ended June 30, 2018:

	Total Stock Options Outstanding		Weighted Average Exercise Price per Share
December 31, 2017	211,487		$	36.94
Granted	—		—
Vested	—		—
Forfeited, Canceled	(38,856	)	44.60
June 30, 2018	172,631		$	35.22

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The following is a summary of outstanding stock options as of June 30, 2018:

	As of June 30, 2018
	Stock Options Outstanding		Vested Stock Options
Quantity	172,631		172,631
Weighted-average exercise price	$	35.22	$	35.22
Weighted Average Remaining Contractual Term (in Years)	5.14		5.14
Intrinsic value	$	—	$	—

For the six months ended June 30, 2018 and 2017, the Company granted no stock options. For June 30, 2018 and 2017, the total fair value of options vested was $0.

As of June 30, 2018, there was no total compensation cost not yet recognized related to unvested stock options.

5. Warrants

In connection with previous sales of the Company’s common stock and the issuance of debt instruments, warrants were issued which presently have exercise prices ranging from $3.64 to $24.40. The warrants expire between one and seven years from the date of grant, and are subject to the terms applicable in each agreement. The following table summarizes the activity in our outstanding warrants since December 31, 2017:

	Number of Warrants		Weighted Average Exercise Price
December 31, 2017	710,174		$	8.95
Granted	—		—
Exercised	(18,405	)	3.00
Forfeited, Canceled	(155,902	)	3.00
June 30, 2018	535,867		$	10.89

6. Significant Alliances and Related Parties

Roswell Park Cancer Institute

The Company has entered into several agreements with Roswell Park Cancer Institute, or RPCI, including: various sponsored research agreements, an exclusive license agreement and clinical trial agreements for the conduct of the Phase 1 entolimod oncology study and the Phase 1 Curaxin CBL0137 intravenous administration study. Additionally, the Company’s Chief Scientific Officer, or CSO, Dr. Andrei Gudkov, is the Senior Vice President of Basic Research at RPCI. The Company incurred $48,445 and $48,445 in research and development expense to RPCI for the three and six months ended June 30, 2018, respectively, and $20,111 and $46,908 in research and development expense to RPCI for the three and six months ended June 30, 2017, respectively. The Company had $29,602 and $87,964 included in accounts payable owed to RPCI at June 30, 2018 and 2017, respectively. In addition, the Company had $84,429 and $85,102 in accrued expenses payable to RPCI at June 30, 2018 and 2017, respectively.

The Cleveland Clinic

CBLI has entered into an exclusive license agreement with The Cleveland Clinic pursuant to which CBLI was granted an exclusive license to The Cleveland Clinic’s research base underlying our therapeutic platform and certain product candidates licensed to Panacela. CBLI has the primary responsibility to fund all newly developed patents; however, The Cleveland Clinic retains ownership of those patents covered by the agreement. CBLI also agreed to use commercially diligent efforts to bring one or more products to market as soon as practical, consistent with sound and reasonable business practices and judgments. There were no milestone or royalty payments paid to The Cleveland Clinic during the six months ended June 30, 2018 or 2017.

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The Company had no accrued expenses payable to The Cleveland Clinic at June 30, 2018 and 2017.

Buffalo BioLabs and Incuron

Our CSO, Dr. Andrei Gudkov, has business relationships with Buffalo BioLabs, LLC, or BBL, where Dr. Gudkov was a founder and currently serves as its uncompensated Principal Scientific Advisor. The Company recognized $44,128 and $332,008 for the three and six months ended June 30, 2018, respectively, and $84,519 and $154,065 in research and development expense to BBL for the three and six months ended June 30, 2017, respectively. In addition, the Company had $40,000 and $0 in accrued expenses payable to BBL, and $0 and $4,840 in accounts payable to BBL at June 30, 2018 and 2017, respectively. The Company also recognized $11,553 and $23,106 from BBL as sublease and other income for the three and six months ended June 30, 2018, respectively, and $11,553 and $23,106 from BBL as sublease and other income for the three and six months ended June 30, 2017, respectively. Pursuant to our real estate sublease and equipment lease with BBL, the Company had gross accounts receivables of $213,704 and $213,704, and net accounts receivables of $11,553 and $11,553 at June 30, 2018 and 2017, respectively.

Dr. Gudkov is also an uncompensated member of the board of directors for Incuron. Pursuant to master service and development agreements we have with Incuron, the Company performs various research, business development, clinical advisory, and management services. The Company recognized revenue of $199,324 and $291,445 for the three and six months ended June 30, 2018, respectively, and $75,402 and $231,633 for the three and six months ended June 30, 2017, respectively. In addition, we also recognized $1,134 and $2,910 from Incuron for sublease and other income for the three and six months ended June 30, 2018, respectively, and $1,776 and $3,552 from Incuron for sublease and other income for the three and six months ended June 30, 2017, respectively. Pursuant to these agreements, the Company had gross accounts receivable of $37,215 and $50,303 at June 30, 2018 and 2017, respectively.

7. Subsequent Event

On August 6, 2018, the Company entered into a series of transactions with Genome Protection, Inc. (“GPI”), a Delaware corporation, and Everon BioSciences, Inc. (“Everon”), a New York corporation. GPI was formed by the Company for the purpose of creating a joint venture between the Company and Everon that would be focused on developing anti-aging medications and would seek investment capital from third parties. 

As part of this transaction, CBLI entered into a License Agreement with GPI (the “GPI License Agreement”) pursuant to which the Company agreed to license to GPI, on an exclusive basis, the right to develop, manufacture, commercialize and sell products utilizing certain of the Company’s intellectual property underlying the Company’s entolimod drug candidate, solely in the field of use related to the prevention or treatment of any disease, disorder or frailty in humans caused by aging.

Simultaneous with its entry into the License Agreement, the Company also entered into an Assignment Agreement with GPI, dated as of August 6, 2018 (the “GPI Assignment Agreement”). Under the Assignment Agreement, the Company assigned certain intellectual property underlying its superentolimod product candidate and its entolimod vaccine product candidate and GPI licensed back to the Company, on an exclusive, irrevocable basis, the right to develop manufacture, commercialize and sell products relating to the assigned intellectual property for use as a medical countermeasure to treat acute radiation exposure or as a cancer treatment.

As consideration for the licenses granted to GPI under the License Agreement and the assignment of the intellectual property to GPI under the Assignment Agreement, pursuant to a contribution and subscription agreement, GPI issued to the Company 1,000 shares of GPI’s common stock. Contemporaneously with the Company’s entry into the License Agreement and Assignment Agreement, Everon contributed certain of its intellectual property related to the potential development of treatments that address serious medical needs associated with human aging to GPI, also in exchange for 1,000 shares of GPI’s common stock. As a result of each of the Company’s and Everon’s receipt of 1,000 shares of GPI’s common stock, each of the Company and Everon became the owner of 50% of all of the outstanding capital stock of GPI.  The Company is currently evaluating the accounting implications of this transaction.

The Company’s Chief Science Officer, Dr. Andrei Gudkov, has business relationships with Everon, where Dr. Gudkov was a founder and currently serves as its Chief Scientific Officer. Accordingly, the transaction with Everon will likely be considered a transaction with a related party.

The Company’s Chief Executive Officer, Dr. Yakov Kogan, is the sole officer and director of GPI.

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

This management’s discussion and analysis of financial condition and results of operations and other portions of this quarterly report on Form 10-Q contain forward-looking statements that involve risks and uncertainties. All statements other than statements of current or historical fact contained in this quarterly report, including statements regarding our future financial position, business strategy, new products, budgets, liquidity, cash flows, projected costs, regulatory approvals, or the impact of any laws or regulations applicable to us, and plans and objectives of management for future operations, are forward-looking statements. The words "anticipate," "believe," "continue," "should," "estimate," "expect," "intend," "may," "plan," "project," "will," and similar expressions, as they relate to us, are intended to identify forward-looking statements. We have based these forward-looking statements on our current expectations about future events. While we believe these expectations are reasonable, such forward-looking statements are inherently subject to risks and uncertainties, many of which are beyond our control. Our actual future results may differ materially from those discussed here for various reasons. We discuss many of these risks in Item 1A under the heading "Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2017. Factors that may cause such differences include, but are not limited to, our need for additional financing to meet our business objectives, results of our research and development efforts and clinical trials, regulatory developments, our inability to obtain regulatory approval in a timely manner, or at all, product demand, market acceptance, government contracting processes and requirements, the exercise of control over our company by our majority stockholder, and other factors discussed below and in our other SEC filings, including our Annual Report on Form 10-K for the year ended December 31, 2017.

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Given these uncertainties, you should not place undue reliance on these forward-looking statements. The forward-looking statements included in this quarterly report are made only as of the date hereof. We do not undertake any obligation to update any such statements or to publicly announce the results of any revisions to any of such statements to reflect future events or developments. This management’s discussion and analysis of financial condition and results of operations should be read in conjunction with our financial statements and the related notes included elsewhere in this filing and with our historical consolidated financial statements and the related notes thereto in our Annual Report on Form 10-K for the year ended December 31, 2017.

OVERVIEW

We are an innovative biopharmaceutical company developing novel approaches to activate the immune system and address serious medical needs. Our proprietary platform of Toll-like immune receptor activators has applications in mitigation of radiation injury and immuno-oncology. We combine our proven scientific expertise and our depth of knowledge about our products’ mechanisms of action into a passion for developing drugs to save lives. Our most advanced product candidate is entolimod, an immune-stimulatory agent, which we are developing as a radiation countermeasure and an immunotherapy for oncology and other indications. We conduct business in the U.S. and Russia through two subsidiaries, one of which is wholly-owned, BioLab 612, and one of which is owned in collaboration with a financial partner, Panacela. In addition, we conduct business with a former subsidiary, Incuron, which will pay us a 2% royalty on future commercialization, licensing, or sale of certain technology we sold to Incuron.

Financial Overview

Our discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). The preparation of these financial statements requires us to make estimates and judgments that affect our reported amounts of assets, liabilities, revenues, and expenses.

On an ongoing basis, we evaluate our estimates and judgments, including those related to accrued expenses, income taxes, stock-based compensation, investments, and in-process research and development. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the reported amounts of revenues and expenses that are not readily apparent from other sources. Actual results may differ from these estimates.

Our revenue, operating results, and profitability have varied, and we expect that they will continue to vary on a quarterly basis, primarily due to the timing of work completed under new and existing grants, development contracts, and collaborative relationships.

Revenue

Our revenue originates from grants and contracts from both United States ("U.S.") federal government sources and Russian Federation ("Russia") government sources and service contracts with Incuron. U.S. federal grants and contracts are provided to advance research and development of entolimod, our lead product candidate, which we believe is of interest for potential sale to the U.S. Department of Defense ("DoD,") or the Biomedical Advanced Research and Development Authority of the U.S. Department of Health and Human Services ("BARDA"). Russian government contracts are provided to advance research and development of our oncology product candidates that may eventually be licensed for sale in Russia. We provide various research, management, business development, and clinical advisory services to Incuron.

Research and Development Expenses

Research and development ("R&D") costs are expensed as incurred. Advance payments are deferred and expensed as performance occurs. R&D costs include the cost of our personnel (which consists of salaries and incentive and stock-based compensation), out-of-pocket pre-clinical and clinical trial costs usually associated with contract research organizations, drug product manufacturing and formulation, and a pro-rata share of facilities expense and other overhead items.

General and Administrative Expenses

General and administrative ("G&A") functions include executive management, finance and administration, government affairs and regulations, corporate development, human resources, and legal and compliance. The specific costs include the cost of our personnel consisting of salaries, incentive and stock-based compensation, out-of-pocket costs usually associated with attorneys

17

(both corporate and intellectual property), bankers, accountants, and other advisors and a pro-rata share of facilities expense and other overhead items.

Other Income and Expenses

Other recurring income and expenses primarily consists of interest income on our investments, changes in the market value of our derivative financial instruments, and foreign currency transaction gains or losses.

Recent Developments

As previously reported, on August 6, 2018, the Company entered into a series of transactions with GPI, a corporation formed by the Company for the purpose of creating a joint venture between the Company and Everon that would be focused on developing anti-aging medications and would seek investment capital from third parties. On August 6, 2018, the Company entered into the License Agreement with GPI pursuant to which the Company licensed to GPI, on an exclusive basis, the right to develop, manufacture, commercialize and sell products utilizing the Company’s intellectual property underlying the Company’s entolimod drug candidate, solely in the field of use related to the prevention or treatment of any disease, disorder or frailty in humans caused by aging. Simultaneous with its entry into the License Agreement, the Company also entered into the Assignment Agreement with GPI, under which the Company assigned certain intellectual property underlying its superentolimod product candidate and its entolimod vaccine product candidate and GPI licensed back to the Company, on an exclusive, irrevocable basis, the right to develop manufacture, commercialize and sell products relating to the assigned intellectual property for use as a medical countermeasure to treat acute radiation exposure or as a cancer treatment.

As consideration for the licenses granted to GPI under the License Agreement and the assignment of the intellectual property to GPI under the Assignment Agreement, GPI issued to the Company 1,000 shares of GPI’s common stock. Contemporaneously with the Company’s entry into the License Agreement and Assignment Agreement, Everon contributed certain of its intellectual property related to the potential development of treatments that address serious medical needs associated with human aging to GPI, also in exchange for 1,000 shares of GPI’s common stock. As a result of each of the Company’s and Everon’s receipt of 1,000 shares of GPI’s common stock, each of the Company and Everon became the owner of 50% of all of the outstanding capital stock of GPI.

Subsequent to the intellectual property transfers described above, the Company, GPI and Everon entered into agreements with a third-party investor for the purpose of providing GPI with capital. On August 10, 2018, GPI, Norma Investments Limited, a British Virgin Islands company (“Norma”), the Company and Everon entered into a certain Simple Agreement for Future Equity (the “SAFE”). Under the SAFE, GPI granted Norma the right to purchase shares of GPI’s capital stock in exchange for the payment of up to $30,000,000, of which $10,500,000 was paid shortly after the execution of the SAFE and the remainder may be paid, if at all, in tranches over time. Norma may exercise its right to purchase shares of GPI’s capital stock upon the occurrence of certain events, or otherwise may alternatively be paid an amount equal to its investment amount (plus accrued interest, in certain cases). Under the SAFE, the parties agree that GPI’s board of directors (the “GPI Board”) will consist of four members, two of whom will be selected by Norma, one of whom will be selected by the Company and one of whom will be selected by Everon. The SAFE also provides that the parties will agree that a quorum of the GPI Board will require that at least one of the directors selected by Norma be present. Additionally, the SAFE sets forth a number of actions that GPI will be prohibited from taking without the unanimous consent of all of the members of the GPI Board and sets forth other matters that must be approved by a majority of the members of the GPI Board. The Company and Everon have each guaranteed, to the extent of their powers as stockholders of GPI, the due and punctual performance by GPI of all of its obligations under the SAFE. In connection with the execution of the SAFE, the Company, Everon, GPI and Norma entered into a Director Designation Agreement, dated as of August 10, 2018, pursuant to which the parties made certain commitments as to voting and transfer of their shares of GPI and GPI’s governance.

Critical Accounting Policies and Significant Estimates

Our critical accounting policies and significant estimates are detailed in our Annual Report on Form 10-K for the year ended December 31, 2017. Other than as set forth below, our critical accounting policies and significant estimates have not changed substantially from those previously disclosed in our Annual Report on Form 10-K for the year ended December 31, 2017.

Fair Value of Financial Instruments

We use the Available-For-Sale accounting method to determine the fair value of certain cash equivalents and short-term investments in United States Treasury Notes or certificates of deposit. As of June 30, 2018, we held approximately $0.1 million in cash equivalents, $1.8 million in U.S. Treasury Notes which we classified as Level 1, and $0.7 million in certificates of deposit which we classified as Level 2.

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We use the Black-Scholes model to determine the fair value of certain common stock warrants on a recurring basis, and classify such warrants as Level 3 in the fair value hierarchy. The Black-Scholes model utilizes inputs consisting of: (i) the closing price of our common stock; (ii) the expected remaining life; (iii) the expected volatility using a weighted average of historical volatilities of CBLI common stock and a group of comparable companies; and (iv) the risk-free market rate.

As of June 30, 2018, we held approximately $0.4 million in accrued expenses related to warrants to purchase common stock, which we classified as Level 3.

Three Months Ended June 30, 2018 Compared to Three Months Ended June 30, 2017

Revenue

Revenue increased from approximately $0.21 million for the three months ended June 30, 2017 to approximately $0.39 million for the three months ended June 30, 2018, representing an increase of approximately $0.2 million, or 89.9%. This increase is primarily due to an increase in revenues from our Joint Warfighter Medical Research Program ("JWMRP") contract with the DoD for continued preclinical development along with other drug manufacturing activities for entolimod, and increases in revenues from our Incuron service contract. Differences in our revenue sources, by program, between the years are set forth in the following table.

	Program	Three Months Ended June 30,
Funding Source		2018		2017		Variance
DoD	JWMRP Contract (1)	$	191,727	$	129,094	$	62,633
DoD	PRMRP Contract (2)	539		1,660		(1,121		)
Incuron	Service contract	199,325		75,402		123,923
		$	391,591	$	206,156	$	185,435

(1) The Congressionally Directed Medical Research Programs (CDMRP) Joint Warfighter Medical Research Program (JWMRP) contract was awarded on September 1, 2015.

(2) The CDMRP Peer Reviewed Medical Research Program (PRMRP) grant was awarded effective as of September 30, 2015.

We anticipate our revenue over the next year will continue to be derived primarily from government grants and contracts. We anticipate that DoD revenue will be similar in the next quarter, as we expect to finalize the biocomparability study, and grow in the final quarter of the year as additional DoD-supported studies are expected to be initiated. We also plan to submit proposals for government grants and contracts to various funding sources, but there can be no assurance that we will receive future funding awards. The following table sets forth information regarding our currently active grants and contracts:

						As of June 30, 2018
Funding Source	Program	Total Award Value		Funded Award Value		Cumulative Revenue		Funded Backlog		Unfunded Backlog
DoD	JWMRP Contract	$	9,226,455	$	9,226,455	$	3,055,499	$	6,170,956	$	—
DoD	PRMRP Contract	6,573,992		6,573,992		75,403		6,498,589		—
		$	15,800,447	$	15,800,447	$	3,130,902	$	12,669,545	$	—

Research and Development Expenses

R&D expenses decreased from$1.2 million for the three months ended June 30, 2017 to $0.9 million for the three months ended June 30, 2018, representing a decrease of$0.3 million, or 25.0%. Variances in individual development programs are noted in the table below. The net decrease is primarily attributable to a $0.6 million reduction in R&D spending for biodefense applications of entolimod partially offset by a $0.3 million increase in R&D expenses related to the oncology applications of the entolimod family of compounds. The remaining variances are not significant.

	Three Months Ended June 30,
	2018			2017		Variance
Entolimod for Biodefense Applications	$	380,914		$	950,305	$	(569,391	)
CBLB612	(1		)	3,412		(3,413		)
Entolimod for Oncology Indications	363,616			79,685		283,931
	744,529			1,033,402		(288,873		)
Curaxins	144,600			88,939		55,661
Panacela product candidates	19,778			66,039		(46,261		)
Total research & development expenses	$	908,907		$	1,188,380	$	(279,473	)

General and Administrative Expenses

G&A expenses decreased from$0.59 million for the three months ended June 30, 2017 to $0.55 million for the three months ended June 30, 2018, representing a decrease of $0.04 million, or 6.4%. This reduction consisted primarily of a $0.04 million decrease in subcontractor expense and franchise taxes.

Other Income and Expenses

Other expenseincreased from$4.1 million of other expense for the three months ended June 30, 2017 to $0.2 million of other income for the three months ended June 30, 2018, representing an income increase of $4.3 million, or 104.8%. This increase was primarily related to a $4.3 million non-cash gain related to the change in valuation of our warrant liability as a result of stock price changes as well as warrant expirations.

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Six Months Ended June 30, 2018 Compared to Six Months Ended June 30, 2017

Revenue

Revenue decreased from approximately $0.78 million for the six months ended June 30, 2017 to approximately $0.62 million for the six months ended June 30, 2018, representing a decrease of approximately $0.16 million, or (20.7)%, principally due to the decrease in activity under our JWMRP contract for continued preclinical development of entolimod's biodefense indication while we await the results of the biocomparability study, partially offset by an increase in our Incuron service contract revenues. Differences in our revenue sources, by program, between the years are set forth in the following table:

	Program	Six Months Ended June 30,
Funding Source		2018		2017		Variance
DoD	JWMRP Contract (1)	$	326,644	$	544,188	$	(217,544	)
DoD	PRMRP Contract (2)	1,078		3,423		(2,345		)
DoD	DTRA Contract (3)	—		1,886		(1,886		)
Incuron	Service contract	291,445		231,633		59,812
		$	619,167	$	781,130	$	(161,963	)

(1) The Congressionally Directed Medical Research Programs (CDMRP) Joint Warfighter Medical Research Program (JWMRP) contract was awarded on September 1, 2015.

(2) The CDMRP Peer Reviewed Medical Research Program (PRMRP) grant was awarded effective as of September 30, 2015.

(3) The Defense Threat Reduction Agency (DTRA) contract had additional revenue recognized upon acknowledgment of final annual indirect rates for the fiscal year ended December 31, 2013.

Research and Development Expenses

R&D expenses decreased from approximately $2.6 million for the six months ended June 30, 2017 to approximately $2.2 million for the six months ended June 30, 2018, representing a decrease of approximately $0.36 million, or 13.8%. Variances in individual development programs are noted in the table below. The net decrease is primarily attributable to a $0.83 million reduction in R&D spending for biodefense applications of entolimod under our DoD contracts, partially offset by a $0.48 million increase in R&D expenses related to the oncology applications of the entolimod family of compounds. The remaining variances are not significant. We anticipate an increase in spending for entolimod for biodefense applications as activities increase in the performance of the DoD contracts following the expected completion of our biocomparability study.

	Six Months Ended June 30,
	2018	2017	Variance
Entolimod for Biodefense Applications	1,323,574	2,153,142	$	(829,568	)
CBLB612	580	25,144	(24,564		)
Entolimod for Oncology Indications	634,554	150,365	484,189
	1,958,708	2,328,651	(369,943		)
Curaxins	215,461	142,571	72,890
Panacela product candidates	71,208	134,156	(62,948		)
Total research & development expenses	2,245,377	2,605,378	$	(360,001	)

General and Administrative Expenses

G&A expenses decreased from$1.4 million for the six months ended June 30, 2017 to $1.3 million for the six months ended June 30, 2018, representing a net decrease of$0.1 million, or 6.4%. These net reductions consisted primarily of a $0.09 million decrease in subcontractor expense relating to outsourced finance department assistance, and a $0.02 million decrease in compensation expense due to reductions in personnel.

Other Income and Expenses

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Other income increased from$4.2 million of other expense for the six months ended June 30, 2017 to $0.8 million of other income for the six months ended June 30, 2018, representing an income increase of $4.9 million, or 118.6%. This income increase was primarily related to a $4.9 million variance related to the valuation of our warrant liability.

Liquidity and Capital Resources

We have incurred net losses of approximately $162.5 million from our inception through June 30, 2018. Historically, we have not generated, and do not expect to generate in the immediate future, revenue from sales of product candidates. Since our founding in 2003, we have funded our operations through a variety of means:

• From inception through June 30, 2018, we have raised $144.7 million of net equity capital, including amounts received from the exercise of options and warrants. We have also received $7.3 million in net proceeds from the issuance of long-term debt instruments;

• DoD and BARDA have funded grants and contracts totaling $60.4 million for the development of entolimod for its biodefense indication;

• The Russian Federation has funded a series of our contracts totaling $17.3 million, based on the exchange rates in effect on the date of funding. These contracts included a requirement for us to contribute matching funds, which we have satisfied or expect to satisfy with both the value of developed intellectual property at the time of award, incurred development expenses and future expenses;

• We have been awarded $4.0 million in grants and contracts not described above, all of which have been recognized at June 30, 2018;

• Incuron was formed to develop and commercialize the Curaxins product line, including its lead oncology drug candidate CBL0137. In 2015, we sold our ownership interest for approximately $4.0 million and retain a 2% royalty interest in the CBL0137 technology; and

• Panacela was formed to develop and commercialize preclinical compounds, which were transferred to Panacela through assignment and lease agreements. RUSNANO contributed $9.0 million to Panacela and CBLI contributed $3.0 million plus intellectual property to Panacela. As of the date of this filing, CBLI owns 67.57% of Panacela.

We have incurred cumulative net losses and expect to incur additional losses related to our R&D activities. We do not have commercial products and have limited capital resources. At June 30, 2018, we had cash, cash equivalents and short-term investments of $6.5 million which, along with the active government contracts described above, are expected to fund our projected operating requirements for at least 12 months beyond the filing date of this Quarterly Report on Form 10-Q. However, until we are able to commercialize our product candidates at a level that covers our cash expenses, we will need to raise substantial additional capital, which we may be unable to raise in sufficient amounts, when needed and at acceptable terms. Our plans with regard to these matters may include seeking additional capital through debt or equity financing, the sale or license of drug candidates, or obtaining additional government research funding. There can be no assurance that we will be able to obtain future financing on acceptable terms, or that we can obtain additional government financing for our operations. If we are unable to raise adequate capital and/or achieve profitable operations, future operations might need to be scaled back or discontinued. The financial statements do not include any adjustments relating to the recoverability of the carrying amount of recorded assets and liabilities that might result from the outcome of these uncertainties.

Cash Flows:

The following table provides information regarding our cash flows for the six months ended June 30, 2018 and 2017:

21

	For the Six Months Ended June 30,
	2018			2017			Variance
Cash flows used in operating activities	$	(2,281,975	)	$	(3,898,680	)	$	1,616,705
Cash flows provided by investing activities	2,012,816			874,167			1,138,649
Cash flows provided by financing activities	55,215			—			55,215
Effect of exchange rate change on cash and equivalents	(9,490		)	54,698			(64,188		)
Decrease in cash and cash equivalents	(223,434		)	(2,969,815		)	2,746,381
Cash and cash equivalents at beginning of period	4,230,548			6,901,816			(2,671,268		)
Cash and cash equivalents at end of period	$	4,007,114		$	3,932,001		$	75,113

Operating Activities

Net cash used in operating activities decreased by $1.6 million to $2.3 million for the six months ended June 30, 2018 from $3.9 million for the six months ended June 30, 2017. Net cash used in operating activities for the period ending June 30, 2018 consisted of a reported net loss of $2.1 million, which was adjusted down for $0.7 million of net non-cash operating activities, and a $0.6 millionnet increase due to changes in operating assets and liabilities. The $0.7 million of net non-cash operating activities substantially consisted of changes in the valuation of our warrant liability. Of the $0.6 million of changes in operating assets and liabilities, $0.3 million was due to a net decrease in accounts receivable and other current assets, and $0.3 million was due to a net increase in accrued expenses and accounts payable.

Net cash used in operating activities for the six months ended June 30, 2017 of $3.9 million consisted of a reported net loss of $7.3 million, which was reduced for $4.2 million of net non-cash operating activities, and a $0.8 millionnet decrease due to changes in operating assets and liabilities. Of the net non-cash operating activities of $4.2 million, $4.2 million was due to changes in the valuation of our warrant liability. Of the $0.8 million of changes in operating assets and liabilities, $0.1 million was due to a net increase in accounts receivable and other currents assets, and $0.7 million was due to a net decrease in accrued expenses and accounts payable.

Investing Activities

Net cash provided by investing activities increased by $1.1 million to $2.0 million for the six months ended June 30, 2018 from net cash provided by investing activities of $0.9 million for the six months ended June 30, 2017. The net cash provided by investing activities for the six months ended June 30, 2018 consisted of net sales of short-term investments. Net cash provided by investing activities for the six months ended June 30, 2017 consisted of net sales of short-term investments.

Financing Activities

Net cash provided by financing activities increased by $0.1 million to $0.1 million for the six months ended June 30, 2018 from $0.0 million for the six months ended June 30, 2017. Net cash provided by financing activities during the six months ended June 30, 2018 consisted of proceeds from the exercise of warrants.

Impact of Exchange Rate Fluctuations

Our reported financial results are affected by changes in foreign currency exchange rates between the U.S. dollar and the Russian ruble. Between January 1, 2018 and June 30, 2018, this rate fluctuated by 9.0%. For calendar 2017, this rate fluctuated by 5.0%. Translation gains or losses result primarily from the impact of exchange rate fluctuations on the reported U.S. dollar equivalent of ruble denominated cash and cash equivalents, and short-term investments. Variances in the exchange rate for these items have not been realized; as such the resulting gains or losses are recorded as other comprehensive income in the equity section of the balance sheet.

Off-Balance Sheet Arrangements

We have not entered into any off-balance sheet arrangements.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Not required for smaller reporting company filers.

22

Item 4. Controls and Procedures

Effectiveness of Disclosure

Our management, with the participation of our Chief Executive Officer (performing the functions of the Company's principal executive officer and principal financial officer), evaluated the effectiveness of our disclosure controls and procedures as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, or the Exchange Act, as of June 30, 2018. Our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only 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 the evaluation of our disclosure controls and procedures as of June 30, 2018, our Chief Executive Officer (performing the functions of the Company's principal executive officer and principal financial officer) concluded that, as of such date, our disclosure controls and procedures were effective to ensure that information required to be disclosed by us in reports that we file or submit under the Exchange Act is (1) recorded, processed, summarized, and reported within the time periods specified in the SEC’s rules and forms, and (2) accumulated and communicated to our management, including our Chief Executive Officer (performing the functions of the Company's principal executive officer and principal financial officer), as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15(d)-15(f) under the Exchange Act) during the fiscal quarter ended June 30, 2018 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

PART II – Other Information

Item 1. Legal Proceedings

In the ordinary course of business, we may periodically become subject to legal proceedings and claims arising in connection with ongoing business activities. The results of litigation and claims cannot be predicted with certainty, and unfavorable resolutions are possible and could materially affect our results of operations, cash flows, or financial position. In addition, regardless of the outcome, litigation could have an adverse impact on us because of defense costs, diversion of management resources, and other factors.

While the outcome of these proceedings and claims cannot be predicted with certainty, there are no matters, as of June 30, 2018, that, in the opinion of management, might have a material adverse effect on our financial position, results of operations or cash flows, or that are required to be disclosed under the rules of the SEC.

Item 1A. Risk Factors

Not required for smaller reporting company filers.

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

None.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

None.

Item 5. Other Information

None.

23

Item 6. Exhibits

(a) The following exhibits are included as part of this report:

Exhibit Number	Description of Document
3.1	Restated Certificate of Incorporation filed with the Secretary of State of Delaware on March 18, 2010 (Incorporated by reference to Exhibit 3.1 to Form 10-K for the year ended December 31, 2009, filed on March 22, 2010).
3.2	Certificate of Amendment to the Restated Certificate of Incorporation, filed with the Secretary of State of Delaware on June 20, 2013 (Incorporated by reference to Exhibit 3.1 to Form 10-Q for the period ended June 30, 2013, filed on August 9, 2013).
3.3	Certificate of Amendment of Restated Certificate of Incorporation (incorporated by reference to Exhibit 3.1 to Form 8-K filed on January 27, 2015).
3.4	Certificate of Amendment to Restated Certificate of Incorporation, filed with the Secretary of State of Delaware on April 20, 2016 (incorporated by reference to Exhibit 3.4 to Form 10-Q for the period ended March 31, 2016, filed May 16, 2016.
3.5	Certificate of Amendment to Restated Certificate of Incorporation, filed with the Secretary of State of Delaware on April 21, 2017 (incorporated by reference to Exhibit 3.5 to Form 10-Q for the period ended March 31, 2017, filed May 15, 2017.
3.6	Certificate of Designation of Preferences, Rights and Limitations of Series A Convertible Preferred Stock (incorporated by reference to Exhibit 3.1 to Form 8-K filed on February 9, 2015).
3.7	Certificate of Amendment of Certificate of Designation of Preferences, Rights and Limitations of Series A Convertible Preferred Stock (incorporated by reference to Exhibit 3.2 to Form 8-K filed on February 9, 2015).
3.8	Second Amended and Restated By-Laws (Incorporated by reference to Exhibit 3.1 to Form 8-K filed on December 5, 2007).
3.9	Amendment to Second Amended and Restated By-Laws of Cleveland BioLabs, Inc. (Incorporated by reference to Exhibit 3.1 to Form 8-K filed on May 18, 2015).
31.1*	Rule 13a-14(a)/15d-14(a) Certification of Yakov Kogan.
32.1*	Certification pursuant to 18 U.S.C. Section 1350.
101.1	The following information from CBLI’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2018, formatted in Extensible Business Reporting Language (XBRL): (i) Consolidated Condensed Balance Sheets as of June 30, 2018 and December 31, 2017; (ii) Consolidated Condensed Statements of Operations for the Three and Six Months Ended June 30, 2018 and 2017; (iii) Consolidated Condensed Statements of Comprehensive Loss for the Three and Six Months Ended June 30, 2018 and 2017; (iv) Consolidated Condensed Statements of Stockholders’ Equity for the Six Months Ended June 30, 2018; (v) Consolidated Condensed Statements of Cash Flows for the Six Months Ended June 30, 2018 and 2017; and (vi) Notes to Consolidated Condensed Financial Statements.
*	Filed herewith.

24

Signatures

In accordance with 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.

	CLEVELAND BIOLABS, INC.
Dated: August 14, 2018	By:	/s/ YAKOV KOGAN
		Yakov N. Kogan
		Chief Executive Officer
		(Principal Executive and Principal Financial Officer)

25

EX-31.1

Exhibit 31.1

Certification

I, Yakov Kogan, certify that:

1. I have reviewed this quarterly report on Form 10-Q of Cleveland BioLabs, 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. I am 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 my supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to me 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 my 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 my 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. I have disclosed, based on my most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

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

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

Dated: August 14, 2018	By:	/s/ Yakov Kogan
		Yakov Kogan
		Chief Executive Officer
		(Principal Executive and Principal Financial Officer)

EX-32.1

Exhibit 32.1

Certification*

In connection with the Quarterly Report on Form 10-Q of Cleveland BioLabs, Inc. (the “Company”) for the quarter ended June 30, 2018, as filed with the Securities and Exchange Commission on the date hereof (the “Quarterly Report”), pursuant to the requirement set forth in Rule 13a-14(b) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. §1350), Yakov Kogan, Chief Executive and Chief Financial Officer of the Company, hereby certifies that, to the best of his knowledge:

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

2. The information contained in the Quarterly Report fairly presents, in all material respects, the financial condition and results of operations of the Company for the period covered by the Quarterly Report.

Dated: August 14, 2018	By:	/s/ Yakov Kogan
		Yakov Kogan
		Chief Executive Officer
		(Principal Executive and Principal Financial Officer)

* This certification accompanies the Quarterly Report to which it relates, is not deemed filed with the Securities and Exchange Commission and is not to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended (whether made before or after the date of the Quarterly Report). It will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 31, 2018
Document And Entity Information [Abstract]
Entity Registrant Name	CLEVELAND BIOLABS INC
Trading Symbol	CBLI
Entity Central Index Key	0001318641
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		11,298,239

XML

Consolidated Condensed Balance Sheets - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 4,007,114	$ 4,230,548
Short-term investments	2,520,376	4,561,357
Accounts receivable	346,012	554,468
Other current assets	121,565	233,617
Total current assets	6,995,067	9,579,990
Equipment, net	27,512	18,588
Other long-term assets	33,786	30,684
Total assets	7,056,365	9,629,262
Current liabilities:
Accounts payable	151,887	201,396
Accrued expenses	1,281,962	970,547
Accrued warrant liability	362,842	1,041,455
Total current liabilities	1,796,691	2,213,398
Non-current liabilities	0	7,494
Total liabilities	1,796,691	2,220,892
Stockholders’ equity:
Preferred stock, $.005 par value; 1,000,000 shares authorized as of June 30, 2018 and December 31, 2017, respectively, 0 shares issued and outstanding as of June 30, 2018 and December 31, 2017	0	0
Common stock, $.005 par value; 25,000,000 shares authorized as of June 30, 2018 and December 31, 2017, respectively, 11,298,239 and 11,279,834 shares issued and outstanding as of June 30, 2018 and December 31, 2017, respectively	56,487	56,395
Additional paid-in capital	163,161,523	163,106,400
Other comprehensive loss	(565,096)	(516,457)
Accumulated deficit	(162,522,259)	(160,446,612)
Total Cleveland BioLabs, Inc. stockholders’ equity	130,655	2,199,726
Noncontrolling interest in stockholders’ equity	5,129,019	5,208,644
Total stockholders’ equity	5,259,674	7,408,370
Total liabilities and stockholders’ equity	$ 7,056,365	$ 9,629,262

XML

Consolidated Condensed Balance Sheets (Parenthetical) - $ / shares	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.005	$ 0.005
Preferred stock, shares authorized (shares)	1,000,000	1,000,000
Preferred stock, shares issued (shares)	0	0
Preferred stock, shares outstanding (shares)	0	0
Common stock, par value (in dollars per share)	$ 0.005	$ 0.005
Common stock, shares authorized (shares)	25,000,000	25,000,000
Common stock issued (shares)	11,298,239	11,279,834
Common stock outstanding (shares)	11,298,239	11,279,834

XML

Consolidated Condensed Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues:
Grants and contracts	$ 391,591	$ 206,156	$ 619,167	$ 781,130
Operating expenses:
Research and development	908,907	1,188,380	2,245,377	2,605,378
General and administrative	550,743	588,288	1,277,936	1,365,712
Total operating expenses	1,459,650	1,776,668	3,523,313	3,971,090
Loss from operations	(1,068,059)	(1,570,512)	(2,904,146)	(3,189,960)
Other income (expense):
Interest and other income	23,924	50,434	93,400	99,723
Foreign exchange gain (loss)	1,479	(4,055)	1,096	(12,285)
Change in value of warrant liability	170,071	(4,124,009)	678,613	(4,245,707)
Total other income (expense)	195,474	(4,077,630)	773,109	(4,158,269)
Net loss	(872,585)	(5,648,142)	(2,131,037)	(7,348,229)
Net loss attributable to noncontrolling interests	21,548	35,354	55,390	71,747
Net loss attributable to Cleveland BioLabs, Inc.	$ (851,037)	$ (5,612,788)	$ (2,075,647)	$ (7,276,482)
Net loss attributable to common stockholders per share of common stock, basic and diluted (in dollars per share)	$ (0.08)	$ (0.50)	$ (0.18)	$ (0.66)
Weighted average number of shares used in calculating net loss per share, basic and diluted (shares)	11,298,239	11,218,727	11,289,396	11,103,586

XML

Consolidated Condensed Statements of Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss including noncontrolling interests	$ (872,585)	$ (5,648,142)	$ (2,131,037)	$ (7,348,229)
Other comprehensive loss:
Unrealized gain (loss) on short-term investments	501	(292)	1,978	(3,410)
Foreign currency translation adjustment	(81,725)	(60,348)	(74,852)	42,187
Comprehensive loss including noncontrolling interests	(953,809)	(5,708,782)	(2,203,911)	(7,309,452)
Comprehensive loss attributable to noncontrolling interests	47,975	54,575	79,625	58,529
Comprehensive loss attributable to Cleveland BioLabs, Inc.	$ (905,834)	$ (5,654,207)	$ (2,124,286)	$ (7,250,923)

XML

Consolidated Condensed Statement of Stockholders' Equity (Unaudited) - 6 months ended Jun. 30, 2018 - USD ($)	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Noncontrolling Interests
Beginning balance at Dec. 31, 2017	$ 7,408,370	$ 56,395	$ 0	$ 163,106,400	$ (516,457)	$ (160,446,612)	$ 5,208,644
Beginning balance (shares) at Dec. 31, 2017		11,279,834	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of warrants (shares)		18,405
Exercise of warrants	55,215	$ 92		55,123
Net loss	(2,131,037)					(2,075,647)	(55,390)
Unrealized loss on short-term investments	1,978				1,978
Foreign currency translation	(74,852)				(50,617)		(24,235)
Ending balance at Jun. 30, 2018	$ 5,259,674	$ 56,487	$ 0	$ 163,161,523	$ (565,096)	$ (162,522,259)	$ 5,129,019
Ending balance (shares) at Jun. 30, 2018		11,298,239	0

XML

Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net loss	$ (2,131,037)	$ (7,348,229)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	9,570	11,641
Non-cash investment income	(22,416)	(29,527)
Gain on equipment disposal	(35,274)	(6,727)
Change in value of warrant liability	(678,613)	4,245,707
Changes in operating assets and liabilities:
Accounts receivable and other current assets	319,227	(77,375)
Other long-term assets	3,505	0
Accounts payable and accrued expenses	260,073	(694,170)
Net cash used in operating activities	(2,281,975)	(3,898,680)
Cash flows from investing activities:
Purchase of short-term investments	(4,149,031)	(4,594,890)
Sale of short-term investments	6,145,088	5,460,087
Purchase of equipment	19,011	0
Proceeds from sale of equipment	35,770	8,970
Net cash provided by investing activities	2,012,816	874,167
Cash flows from financing activities:
Exercise of warrants	55,215	0
Net cash provided by financing activities	55,215	0
Effect of exchange rate change on cash and equivalents	(9,490)	54,698
Decrease in cash and cash equivalents	(223,434)	(2,969,815)
Cash and cash equivalents at beginning of period	4,230,548	6,901,816
Cash and cash equivalents at end of period	4,007,114	3,932,001
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	0	0
Noncash Financing Costs On Common Stock Offering	$ 0	$ 4,334,110

XML

Description of Business

6 Months Ended

Jun. 30, 2018

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Description of Business

Description of Business

Cleveland BioLabs, Inc. ("CBLI" or the " Company") is an innovative biopharmaceutical company developing novel approaches to activate the immune system and address serious medical needs. Our proprietary platform of Toll-like immune receptor ("TLR") activators has applications in radiation protection and immuno-oncology. We combine our proven scientific expertise and our depth of knowledge about our products’ mechanisms of action into a passion for developing drugs to save lives. Our most advanced product candidate is entolimod, an immune-stimulatory agent, which we are developing as a medical radiation countermeasure and an immunotherapy for oncology and other indications.

CBLI was incorporated in Delaware in June 2003 and is headquartered in Buffalo, New York. CBLI conducts business in the United States ("U.S.") and in the Russian Federation ("Russia"), through two subsidiaries: one wholly-owned subsidiary, BioLab 612, LLC ("BioLab 612"), which began operations in 2012; and Panacela Labs, Inc. ("Panacela"), which was formed by us and Joint Stock Company "RUSNANO" ("RUSNANO"), our financial partner in the venture, in 2011. Unless otherwise noted, references to the "Company," "we," "us," and "our" refer to Cleveland BioLabs, Inc. together with its subsidiaries.

XML

Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Summary of Significant Accounting Policies

Basis of Presentation and Consolidation

The accompanying unaudited consolidated condensed financial statements include the accounts of CBLI, BioLab 612, and Panacela. All significant intercompany balances and transactions have been eliminated in consolidation.

The consolidated condensed balance sheet as of December 31, 2017, which has been derived from audited financial statements, and the unaudited interim consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") for interim consolidated financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These consolidated condensed financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the SEC (the "2017Form 10-K").

In the opinion of the Company’s management, any adjustments contained in the accompanying unaudited consolidated financial statements are of a normal recurring nature, and are necessary to fairly present the financial position of the Company as of June 30, 2018, along with its results of operations for the three and six month periods ended June 30, 2018 and 2017 and cash flows for the six month periods ended June 30, 2018 and 2017. Interim results are not necessarily indicative of results that may be expected for any other interim period or for an entire year.

At June 30, 2018, we had cash, cash equivalents and short-term investments of $6.5 million in the aggregate. Management believes this capital will fund the Company's operations and cash requirements for at least 12 months beyond the filing date of this Quarterly Report on Form 10-Q.

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB") or other standard-setting bodies that are adopted by us as of the specified effective date. Unless otherwise discussed, we believe that the impact of recently issued standards that are not yet effective will not have a material impact on our financial position or results of operations upon adoption.

In May 2017, the FASB issued ASU No. 2017-09, "Scope of Modification Accounting" ("ASU 2017-09"), which amends the scope of modification accounting for share-based payment arrangements. The ASU provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. ASU 2017-09 is applied prospectively to awards modified on or after the effective date. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In November 2016, the FASB issued ASU 2016-18, "Statement of Cash Flows (Topic 230): Restricted Cash" ("ASU 2016-18"). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In May 2014, the FASB issued ASU 2014-9, "Revenue from Contracts with Customers" ("ASU 2014-09"), which updates the principles for recognizing revenue. ASU 2014-9 also amends the required disclosures of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In May 2016, the FASB issued ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow Scope Improvements and Practical Expedients" ("ASU 2016-12"). The amendments in ASU 2016-12 affect the guidance in ASU 2014-09 by clarifying certain specific aspects of the guidance, including assessment of collectability, treatment of sales taxes and contract modifications, and providing certain technical corrections. The pronouncement has the same effective date as ASU 2014-09, which is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements. 

In April 2016, the FASB issued ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing" ("ASU 2016-10") related to identifying performance obligations and licensing. ASU 2016-10 is meant to clarify the guidance in FASB ASU 2014-09, "Revenue from Contracts with Customers." Specifically, ASU 2016-10 addresses an entity’s identification of its performance obligations in a contract, as well as an entity’s evaluation of the nature of its promise to grant a license of intellectual property and whether or not that revenue is recognized over time or at a point in time. The pronouncement has the same effective date as ASU 2014-09, which is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)" ("ASU 2016-02"). ASU 2016-02 will require organizations that lease assets with lease terms of more than 12 months to recognize assets and liabilities for the rights and obligations created by those leases on their balance sheets. The ASU will also require new qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 will be effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company expects to adopt this guidance when effective and is currently evaluating the effect that the updated standard will have on its consolidated balance sheets and related disclosures.

In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities" ("ASU 2016-01"). The pronouncement requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset, and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Short-Term Investments

The Company’s short-term investments are classified as available for sale recorded at fair value, and held to maturity recorded at amortized cost. Accordingly, these investments are carried at fair market value. Short-term investments consisted of U.S. Treasury securities in the amount of $1.8 million which were owned by CBLI and had maturities of less than 12 months. In addition, $0.7 million in certificates of deposit with maturity dates beyond three months and less than one year, and owned by Panacela, are also included. These investments are classified as held to maturity given the intent and ability to hold the investments to maturity. Unrealized gains and losses on available for-sale investments are reported as Other Comprehensive Loss, a separate component of stockholders’ equity. Realized gains and losses, and interest and dividends on available-for-sale securities are recorded in our Consolidated Statement of Operations as Interest and Other Income. The cost of securities sold is based on the specific identification method.

Significant Customers and Accounts Receivable

The following table presents our revenue by customer, on a proportional basis, for the three and six months ended June 30, 2018 and 2017.

	Three Months Ended June 30,						Six Months Ended June 30,
Customer	2018		2017		Variance		2018		2017		Variance
Department of Defense	49.1	%	63.4	%	(14.3	)%	52.9	%	70.3	%	(17.4	)%
Incuron	50.9	%	36.6	%	14.3	%	47.1	%	29.7	%	17.4	%
Total	100.0	%	100.0	%	—	%	100.0	%	100.0	%	—	%

Our current Department of Defense ("DOD") revenues come from development contracts that expire in 2019 and 2018, although each contract may be extended. Our Incuron revenues come from a service agreement that is renegotiated annually.

Accounts receivable consist of amounts due under reimbursement contracts with these customers. The Company extends unsecured credit to customers under normal trade agreements, which generally require payment within 30 days.

Other Comprehensive Income (Loss)

The Company applies the Accounting Standards Codification ("Codification") on comprehensive income (loss) that requires disclosure of all components of comprehensive income (loss) on an annual and interim basis. Other comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. The following table presents the changes in accumulated other comprehensive loss for the six months endedJune 30, 2018.

	Unrealized income (loss) on available-for-sale securities			Gains and losses on foreign exchange translations			Total
Beginning balance	$	(1,924	)	$	(514,533	)	$	(516,457	)
Other comprehensive income (loss) before reclassifications	1,978			(50,617		)	(48,639		)
Amounts reclassified from accumulated other comprehensive loss	—			—			—
Ending balance	$	54		$	(565,150	)	$	(565,096	)

Accounting for Stock-Based Compensation

The Cleveland Biolabs, Inc. Equity Incentive Plan, adopted in 2018 (the "Plan"), authorizes CBLI to grant (i) options to purchase common stock, (ii) restricted or unrestricted stock units, and (iii) stock appreciation rights, so long as the exercise or grant price of each are at least equal to the fair market value of the stock on the date of grant. As of June 30, 2018, an aggregate of 424,926 shares of common stock were authorized for issuance under the Plan, all of which a total of 424,926 shares of common stock remained available for future awards. In addition, a total of 172,631 shares of common stock have been reserved for issuance were subject to currently outstanding stock options granted under The Cleveland BioLabs, Inc. Equity Incentive Plan, as in effect prior to the 2018 amendment and restatement. A single participant cannot be awarded more than 100,000 shares annually. Awards granted under the Plan have a contractual life of no more than 10 years. The terms and conditions of equity awards (such as price, vesting schedule, term, and number of shares) under the Plan are specified in an award document, and approved by the Company’s board of directors or its management delegates.

The 2013 Employee Stock Purchase Plan (the "ESPP") provides a means by which eligible employees of the Company and certain designated related corporations may be given an opportunity to purchase shares of common stock. As of June 30, 2018, there are 525,000 shares of common stock reserved for purchase under the ESPP. The number of shares reserved for purchase under the ESPP increases on January 1 of each calendar year by the lesser of: (i) 10% of the total number of shares of common stock outstanding on December 31st of the preceding year, or (ii) 100,000 shares of common stock. The ESPP allows employees to use up to 15% of their compensation to purchase shares of common stock at an amount equal to 85% of the fair market value of the Company’s common stock on the offering date or the purchase date, whichever is less.

The Company utilizes the Black-Scholes valuation model for estimating the fair value of all stock options granted where the vesting period is based on length of service or performance, while a Monte Carlo simulation model is used for estimating the fair value of stock options with market-based vesting conditions. No options were granted during the six months endedJune 30, 2018 and June 30, 2017.

Income Taxes

No income tax expense was recorded for the three and six months ended June 30, 2018 and 2017, as the Company does not expect to have taxable income for 2018 and did not have taxable income in 2017. A full valuation allowance has been recorded against the Company’s deferred tax asset.

Additionally, as disclosed in Note 7, Income Taxes, to the Company’s consolidated financial statements included in the 2017 Form 10-K, the Company had U.S. federal net operating loss carryforwards of approximately $139,700,000, which begin to expire if not utilized by 2023, and approximately $4,046,000 of tax credit carryforwards which begin to expire if not utilized by 2024. The Company also has U.S. state net operating loss carryforwards of approximately $84,200,000, which begin to expire if not utilized by 2027 and state tax credit carryforwards of approximately $311,000, which begin to expire if not utilized by 2022. The purchase of 6,459,948 shares of common stock by David Davidovich, our majority stockholder, on July 9, 2015 resulted in Mr. Davidovich owning 60.2% of the Company at that time. We therefore believe it highly likely that this transaction, more fully described in Note 7, Income Taxes, to the Company's consolidated financial statements included in the 2017 Form 10-K, will be viewed by the U.S. Internal Revenue Service as a change of ownership as defined by Section 382 of the Internal Revenue Code, or Section 382. Consequently, the utilization of these net operating loss and tax credit carryforwards, as well as any additional net operating loss and tax credit carryforwards generated in 2015 through the issuance date, will be limited according to the provisions of Section 382, which will significantly limit the Company’s ability to use these carryforwards to offset taxable income on an annual basis in future periods. As such, a significant portion of these carryforwards will likely expire before they can be utilized, even if the Company is able to generate taxable income that, except for this transaction, would have been sufficient to fully utilize these carryforwards.

Earnings (Loss) per Share

Basic net loss per share of common stock excludes dilution for potential common stock issuances and is computed by dividing net loss by the weighted average number of shares outstanding for the period. Diluted net loss per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. Diluted net loss per share is identical to basic net loss per share as potentially dilutive securities have been excluded from the calculation of diluted net loss per common share because the inclusion of such securities would be antidilutive.

The Company has excluded the following securities from the calculation of diluted net loss per share because all such securities were antidilutive for the periods presented. Additionally, there were no dilutive securities outstanding as of June 30, 2018.

	As of June 30,
Common Equivalent Securities	2018	2017
Warrants	535,867	925,812
Options	172,631	217,921
Total	708,498	1,143,733

Contingencies

From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of business. The Company accrues for liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. For all periods presented, the Company was not a party to any pending material litigation that was estimable and had a probability of loss.

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Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Fair Value of Financial Instruments

The Company measures and records warrant liabilities at fair value in the accompanying financial statements. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability, an exit price, in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value, includes:

• Level 1 – Observable inputs for identical assets or liabilities such as quoted prices in active markets;

• Level 2 – Inputs other than quoted prices in active markets that are either directly or indirectly observable; and

• Level 3 – Unobservable inputs in which little or no market data exists, which are therefore developed by the Company using estimates and assumptions that reflect those that a market participant would use.

Cash equivalents include United States Treasury Notes with original maturities of three months or less, at time of purchase and money market funds. Short-term investments primarily include United States Treasury Notes, along with certificates of deposit at commercial banking institutions, both with maturities of three months or more at time of purchase.

The valuation methodologies used to measure the fair value of the Company’s assets and instruments classified in stockholders’ equity are described as follows: U.S. Treasury Notes and money market funds included in cash equivalents and short-term investments are valued at the closing price reported by an actively traded exchange and are included as Level 1 measurements in the table below. Certificates of deposit are carried at amortized cost, which approximates fair value and are included within short-term investments as a Level 2 measurement in the table below.

The following tables represent the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis.

	As of June 30, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	77,343	$	—	$	—	$	77,343
Short-term investments	1,803,319		717,057		—		2,520,376
Total assets	$	1,880,662	$	717,057	$	—	$	2,597,719
Liabilities:
Accrued warrant liability	$	—	$	—	$	362,842	$	362,842

	As of December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	551,088	$	—	$	—	$	551,088
Short-term investments	3,606,499		954,858		—		4,561,357
Total assets	$	4,157,587	$	954,858	$	—	$	5,112,445
Liabilities:
Accrued warrant liability	$	—	$	—	$	1,041,455	$	1,041,455

The Company uses the Black-Scholes model to measure the accrued warrant liability. The following are the assumptions used to measure the accrued warrant liability which were determined in a manner consistent with grants of options to purchase common stock:

	June 30, 2018			December 31, 2017
Stock Price	$	2.46		$	4.01
Exercise Price	$3.64  - $24.40			$ 3.00 - 24.40
Term in years	0.54 – 3.10			0.25 - 3.60
Volatility	52.63%  - 103.38%			71.48 - 139.58%
Annual rate of quarterly dividends	—		%	—		%
Discount rate- bond equivalent yield	1.27% - 2.64%			0.44 - 2.05%

The following table sets forth a summary of changes in the fair value of the Company’s Level 3 fair value measurements for the periods indicated:

	Three Months Ended June 30, 2018			Three Months Ended June 30, 2017
	Accrued Warrant Liability			Accrued Warrant Liability
Beginning Balance	$	532,913		$	1,071,117
Total (gains) or losses, realized and unrealized, included in earnings (1)	(170,071		)	4,124,009
Issuances	—			—
Settlements	—			(4,334,110		)
Ending Balance	$	362,842		$	861,016

	Six Months Ended June 30, 2018			Six Months Ended June 30, 2017
	Accrued Warrant Liability			Accrued Warrant Liability
Beginning Balance	$	1,041,455		$	949,419
Total (gains) or losses, realized and unrealized, included in earnings (1)	(678,613		)	4,245,707
Issuances	—			—
Settlements	—			(4,334,110		)
Ending Balance	$	362,842		$	861,016

(1) Unrealized gains or losses related to the accrued warrant liability were included as change in value of accrued warrant liability. There were no realized gains or losses for the three and six months ended June 30, 2018 and 2017.

As of June 30, 2018 and December 31, 2017, the Company had no assets or liabilities that were measured at fair value on a nonrecurring basis.

The Company considers the accrued warrant liability to be Level 3 because some of the inputs into the measurements are neither directly or indirectly observable. The accrued warrant liability uses management’s estimate for the expected term. As of June 30, 2018, the Black-Scholes pricing model was used as the valuation technique for the accrued warrant liability and used the unobservable input for the expected term of 0.54 – 3.10 years.

Management believes the value of the accrued warrant liability is more sensitive to a change in the Company’s stock price at the end of the respective reporting period as opposed to a change in the unobservable input described above.

The carrying amounts of the Company’s short-term financial instruments, which include cash and cash equivalents, accounts receivable and accounts payable, approximate their fair values due to their short maturities.

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Stockholders' Equity

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Stockholders' Equity

Stockholders’ Equity

The Company has granted options to purchase shares of common stock. The following is a summary of option award activity during the six months ended June 30, 2018:

	Total Stock Options Outstanding		Weighted Average Exercise Price per Share
December 31, 2017	211,487		$	36.94
Granted	—		—
Vested	—		—
Forfeited, Canceled	(38,856	)	44.60
June 30, 2018	172,631		$	35.22

The following is a summary of outstanding stock options as of June 30, 2018:

	As of June 30, 2018
	Stock Options Outstanding		Vested Stock Options
Quantity	172,631		172,631
Weighted-average exercise price	$	35.22	$	35.22
Weighted Average Remaining Contractual Term (in Years)	5.14		5.14
Intrinsic value	$	—	$	—

For the six months ended June 30, 2018 and 2017, the Company granted no stock options. For June 30, 2018 and 2017, the total fair value of options vested was $0.

As of June 30, 2018, there was no total compensation cost not yet recognized related to unvested stock options.

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Warrants

6 Months Ended

Jun. 30, 2018

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Warrants

Warrants

In connection with previous sales of the Company’s common stock and the issuance of debt instruments, warrants were issued which presently have exercise prices ranging from $3.64 to $24.40. The warrants expire between one and seven years from the date of grant, and are subject to the terms applicable in each agreement. The following table summarizes the activity in our outstanding warrants since December 31, 2017:

	Number of Warrants		Weighted Average Exercise Price
December 31, 2017	710,174		$	8.95
Granted	—		—
Exercised	(18,405	)	3.00
Forfeited, Canceled	(155,902	)	3.00
June 30, 2018	535,867		$	10.89

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Significant Alliances and Related Parties

6 Months Ended

Jun. 30, 2018

Related Party Transactions [Abstract]

Significant Alliances and Related Parties

Significant Alliances and Related Parties

Roswell Park Cancer Institute

The Company has entered into several agreements with Roswell Park Cancer Institute, or RPCI, including: various sponsored research agreements, an exclusive license agreement and clinical trial agreements for the conduct of the Phase 1 entolimod oncology study and the Phase 1 Curaxin CBL0137 intravenous administration study. Additionally, the Company’s Chief Scientific Officer, or CSO, Dr. Andrei Gudkov, is the Senior Vice President of Basic Research at RPCI. The Company incurred $48,445 and $48,445 in research and development expense to RPCI for the three and six months ended June 30, 2018, respectively, and $20,111 and $46,908 in research and development expense to RPCI for the three and six months ended June 30, 2017, respectively. The Company had $29,602 and $87,964 included in accounts payable owed to RPCI at June 30, 2018 and 2017, respectively. In addition, the Company had $84,429 and $85,102 in accrued expenses payable to RPCI at June 30, 2018 and 2017, respectively.

The Cleveland Clinic

CBLI has entered into an exclusive license agreement with The Cleveland Clinic pursuant to which CBLI was granted an exclusive license to The Cleveland Clinic’s research base underlying our therapeutic platform and certain product candidates licensed to Panacela. CBLI has the primary responsibility to fund all newly developed patents; however, The Cleveland Clinic retains ownership of those patents covered by the agreement. CBLI also agreed to use commercially diligent efforts to bring one or more products to market as soon as practical, consistent with sound and reasonable business practices and judgments. There were no milestone or royalty payments paid to The Cleveland Clinic during the six months ended June 30, 2018 or 2017.

The Company had no accrued expenses payable to The Cleveland Clinic at June 30, 2018 and 2017.

Buffalo BioLabs and Incuron

Our CSO, Dr. Andrei Gudkov, has business relationships with Buffalo BioLabs, LLC, or BBL, where Dr. Gudkov was a founder and currently serves as its uncompensated Principal Scientific Advisor. The Company recognized $44,128 and $332,008 for the three and six months ended June 30, 2018, respectively, and $84,519 and $154,065 in research and development expense to BBL for the three and six months ended June 30, 2017, respectively. In addition, the Company had $40,000 and $0 in accrued expenses payable to BBL, and $0 and $4,840 in accounts payable to BBL at June 30, 2018 and 2017, respectively. The Company also recognized $11,553 and $23,106 from BBL as sublease and other income for the three and six months ended June 30, 2018, respectively, and $11,553 and $23,106 from BBL as sublease and other income for the three and six months ended June 30, 2017, respectively. Pursuant to our real estate sublease and equipment lease with BBL, the Company had gross accounts receivables of $213,704 and $213,704, and net accounts receivables of $11,553 and $11,553 at June 30, 2018 and 2017, respectively.

Dr. Gudkov is also an uncompensated member of the board of directors for Incuron. Pursuant to master service and development agreements we have with Incuron, the Company performs various research, business development, clinical advisory, and management services. The Company recognized revenue of $199,324 and $291,445 for the three and six months ended June 30, 2018, respectively, and $75,402 and $231,633 for the three and six months ended June 30, 2017, respectively. In addition, we also recognized $1,134 and $2,910 from Incuron for sublease and other income for the three and six months ended June 30, 2018, respectively, and $1,776 and $3,552 from Incuron for sublease and other income for the three and six months ended June 30, 2017, respectively. Pursuant to these agreements, the Company had gross accounts receivable of $37,215 and $50,303 at June 30, 2018 and 2017, respectively.

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Subsequent Event

6 Months Ended

Jun. 30, 2018

Subsequent Events [Abstract]

Subsequent Event

Subsequent Event

On August 6, 2018, the Company entered into a series of transactions with Genome Protection, Inc. (“GPI”), a Delaware corporation, and Everon BioSciences, Inc. (“Everon”), a New York corporation. GPI was formed by the Company for the purpose of creating a joint venture between the Company and Everon that would be focused on developing anti-aging medications and would seek investment capital from third parties. 

As part of this transaction, CBLI entered into a License Agreement with GPI (the “GPI License Agreement”) pursuant to which the Company agreed to license to GPI, on an exclusive basis, the right to develop, manufacture, commercialize and sell products utilizing certain of the Company’s intellectual property underlying the Company’s entolimod drug candidate, solely in the field of use related to the prevention or treatment of any disease, disorder or frailty in humans caused by aging.

Simultaneous with its entry into the License Agreement, the Company also entered into an Assignment Agreement with GPI, dated as of August 6, 2018 (the “GPI Assignment Agreement”). Under the Assignment Agreement, the Company assigned certain intellectual property underlying its superentolimod product candidate and its entolimod vaccine product candidate and GPI licensed back to the Company, on an exclusive, irrevocable basis, the right to develop manufacture, commercialize and sell products relating to the assigned intellectual property for use as a medical countermeasure to treat acute radiation exposure or as a cancer treatment.

As consideration for the licenses granted to GPI under the License Agreement and the assignment of the intellectual property to GPI under the Assignment Agreement, pursuant to a contribution and subscription agreement, GPI issued to the Company 1,000 shares of GPI’s common stock. Contemporaneously with the Company’s entry into the License Agreement and Assignment Agreement, Everon contributed certain of its intellectual property related to the potential development of treatments that address serious medical needs associated with human aging to GPI, also in exchange for 1,000 shares of GPI’s common stock. As a result of each of the Company’s and Everon’s receipt of 1,000 shares of GPI’s common stock, each of the Company and Everon became the owner of 50% of all of the outstanding capital stock of GPI.  The Company is currently evaluating the accounting implications of this transaction.

The Company’s Chief Science Officer, Dr. Andrei Gudkov, has business relationships with Everon, where Dr. Gudkov was a founder and currently serves as its Chief Scientific Officer. Accordingly, the transaction with Everon will likely be considered a transaction with a related party.

The Company’s Chief Executive Officer, Dr. Yakov Kogan, is the sole officer and director of GPI.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Basis of Presentation and Consolidation

Basis of Presentation and Consolidation

The accompanying unaudited consolidated condensed financial statements include the accounts of CBLI, BioLab 612, and Panacela. All significant intercompany balances and transactions have been eliminated in consolidation.

The consolidated condensed balance sheet as of December 31, 2017, which has been derived from audited financial statements, and the unaudited interim consolidated condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States ("GAAP") for interim consolidated financial information and in accordance with the instructions to Form 10-Q and Article 8 of Regulation S-X of the Securities and Exchange Commission ("SEC"). Certain information and footnote disclosures normally included in consolidated financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. These consolidated condensed financial statements should be read in conjunction with the audited consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K for the year ended December 31, 2017, as filed with the SEC (the "2017Form 10-K").

In the opinion of the Company’s management, any adjustments contained in the accompanying unaudited consolidated financial statements are of a normal recurring nature, and are necessary to fairly present the financial position of the Company as of June 30, 2018, along with its results of operations for the three and six month periods ended June 30, 2018 and 2017 and cash flows for the six month periods ended June 30, 2018 and 2017. Interim results are not necessarily indicative of results that may be expected for any other interim period or for an entire year.

At June 30, 2018, we had cash, cash equivalents and short-term investments of $6.5 million in the aggregate. Management believes this capital will fund the Company's operations and cash requirements for at least 12 months beyond the filing date of this Quarterly Report on Form 10-Q.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board ("FASB") or other standard-setting bodies that are adopted by us as of the specified effective date. Unless otherwise discussed, we believe that the impact of recently issued standards that are not yet effective will not have a material impact on our financial position or results of operations upon adoption.

In May 2017, the FASB issued ASU No. 2017-09, "Scope of Modification Accounting" ("ASU 2017-09"), which amends the scope of modification accounting for share-based payment arrangements. The ASU provides guidance on the types of changes to the terms or conditions of share-based payment awards to which an entity would be required to apply modification accounting. ASU 2017-09 is applied prospectively to awards modified on or after the effective date. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In November 2016, the FASB issued ASU 2016-18, "Statement of Cash Flows (Topic 230): Restricted Cash" ("ASU 2016-18"). ASU 2016-18 requires that a statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. Therefore, amounts generally described as restricted cash and restricted cash equivalents should be included with cash and cash equivalents when reconciling the beginning-of-period and end-of-period total amounts shown on the statement of cash flows. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In May 2014, the FASB issued ASU 2014-9, "Revenue from Contracts with Customers" ("ASU 2014-09"), which updates the principles for recognizing revenue. ASU 2014-9 also amends the required disclosures of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In May 2016, the FASB issued ASU 2016-12, "Revenue from Contracts with Customers (Topic 606): Narrow Scope Improvements and Practical Expedients" ("ASU 2016-12"). The amendments in ASU 2016-12 affect the guidance in ASU 2014-09 by clarifying certain specific aspects of the guidance, including assessment of collectability, treatment of sales taxes and contract modifications, and providing certain technical corrections. The pronouncement has the same effective date as ASU 2014-09, which is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements. 

In April 2016, the FASB issued ASU 2016-10, "Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing" ("ASU 2016-10") related to identifying performance obligations and licensing. ASU 2016-10 is meant to clarify the guidance in FASB ASU 2014-09, "Revenue from Contracts with Customers." Specifically, ASU 2016-10 addresses an entity’s identification of its performance obligations in a contract, as well as an entity’s evaluation of the nature of its promise to grant a license of intellectual property and whether or not that revenue is recognized over time or at a point in time. The pronouncement has the same effective date as ASU 2014-09, which is effective for fiscal years, and for interim periods within those fiscal years, beginning after December 15, 2017. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

In February 2016, the FASB issued ASU 2016-02, "Leases (Topic 842)" ("ASU 2016-02"). ASU 2016-02 will require organizations that lease assets with lease terms of more than 12 months to recognize assets and liabilities for the rights and obligations created by those leases on their balance sheets. The ASU will also require new qualitative and quantitative disclosures to help investors and other financial statement users better understand the amount, timing, and uncertainty of cash flows arising from leases. ASU 2016-02 will be effective for public companies for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018, with early adoption permitted. The Company expects to adopt this guidance when effective and is currently evaluating the effect that the updated standard will have on its consolidated balance sheets and related disclosures.

In January 2016, the FASB issued ASU 2016-01, "Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities" ("ASU 2016-01"). The pronouncement requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income, requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset, and eliminates the requirement for public business entities to disclose the method(s) and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost. The Company adopted this ASU in 2018 with no significant impact on its consolidated financial statements.

Us

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Short-Term Investments

Short-Term Investments

The Company’s short-term investments are classified as available for sale recorded at fair value, and held to maturity recorded at amortized cost. Accordingly, these investments are carried at fair market value. Short-term investments consisted of U.S. Treasury securities in the amount of $1.8 million which were owned by CBLI and had maturities of less than 12 months. In addition, $0.7 million in certificates of deposit with maturity dates beyond three months and less than one year, and owned by Panacela, are also included. These investments are classified as held to maturity given the intent and ability to hold the investments to maturity. Unrealized gains and losses on available for-sale investments are reported as Other Comprehensive Loss, a separate component of stockholders’ equity. Realized gains and losses, and interest and dividends on available-for-sale securities are recorded in our Consolidated Statement of Operations as Interest and Other Income. The cost of securities sold is based on the specific identification method.

Significant Customers and Accounts Receivable

Significant Customers and Accounts Receivable

The following table presents our revenue by customer, on a proportional basis, for the three and six months ended June 30, 2018 and 2017.

	Three Months Ended June 30,						Six Months Ended June 30,
Customer	2018		2017		Variance		2018		2017		Variance
Department of Defense	49.1	%	63.4	%	(14.3	)%	52.9	%	70.3	%	(17.4	)%
Incuron	50.9	%	36.6	%	14.3	%	47.1	%	29.7	%	17.4	%
Total	100.0	%	100.0	%	—	%	100.0	%	100.0	%	—	%

Our current Department of Defense ("DOD") revenues come from development contracts that expire in 2019 and 2018, although each contract may be extended. Our Incuron revenues come from a service agreement that is renegotiated annually.

Accounts receivable consist of amounts due under reimbursement contracts with these customers. The Company extends unsecured credit to customers under normal trade agreements, which generally require payment within 30 days.

Other Comprehensive Income (Loss)

Other Comprehensive Income (Loss)

The Company applies the Accounting Standards Codification ("Codification") on comprehensive income (loss) that requires disclosure of all components of comprehensive income (loss) on an annual and interim basis. Other comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources.

Accounting for Stock-Based Compensation

Accounting for Stock-Based Compensation

The Cleveland Biolabs, Inc. Equity Incentive Plan, adopted in 2018 (the "Plan"), authorizes CBLI to grant (i) options to purchase common stock, (ii) restricted or unrestricted stock units, and (iii) stock appreciation rights, so long as the exercise or grant price of each are at least equal to the fair market value of the stock on the date of grant. As of June 30, 2018, an aggregate of 424,926 shares of common stock were authorized for issuance under the Plan, all of which a total of 424,926 shares of common stock remained available for future awards. In addition, a total of 172,631 shares of common stock have been reserved for issuance were subject to currently outstanding stock options granted under The Cleveland BioLabs, Inc. Equity Incentive Plan, as in effect prior to the 2018 amendment and restatement. A single participant cannot be awarded more than 100,000 shares annually. Awards granted under the Plan have a contractual life of no more than 10 years. The terms and conditions of equity awards (such as price, vesting schedule, term, and number of shares) under the Plan are specified in an award document, and approved by the Company’s board of directors or its management delegates.

The 2013 Employee Stock Purchase Plan (the "ESPP") provides a means by which eligible employees of the Company and certain designated related corporations may be given an opportunity to purchase shares of common stock. As of June 30, 2018, there are 525,000 shares of common stock reserved for purchase under the ESPP. The number of shares reserved for purchase under the ESPP increases on January 1 of each calendar year by the lesser of: (i) 10% of the total number of shares of common stock outstanding on December 31st of the preceding year, or (ii) 100,000 shares of common stock. The ESPP allows employees to use up to 15% of their compensation to purchase shares of common stock at an amount equal to 85% of the fair market value of the Company’s common stock on the offering date or the purchase date, whichever is less.

The Company utilizes the Black-Scholes valuation model for estimating the fair value of all stock options granted where the vesting period is based on length of service or performance, while a Monte Carlo simulation model is used for estimating the fair value of stock options with market-based vesting conditions. No options were granted during the six months endedJune 30, 2018 and June 30, 2017.

Income Taxes

Income Taxes

No income tax expense was recorded for the three and six months ended June 30, 2018 and 2017, as the Company does not expect to have taxable income for 2018 and did not have taxable income in 2017. A full valuation allowance has been recorded against the Company’s deferred tax asset.

Additionally, as disclosed in Note 7, Income Taxes, to the Company’s consolidated financial statements included in the 2017 Form 10-K, the Company had U.S. federal net operating loss carryforwards of approximately $139,700,000, which begin to expire if not utilized by 2023, and approximately $4,046,000 of tax credit carryforwards which begin to expire if not utilized by 2024. The Company also has U.S. state net operating loss carryforwards of approximately $84,200,000, which begin to expire if not utilized by 2027 and state tax credit carryforwards of approximately $311,000, which begin to expire if not utilized by 2022. The purchase of 6,459,948 shares of common stock by David Davidovich, our majority stockholder, on July 9, 2015 resulted in Mr. Davidovich owning 60.2% of the Company at that time. We therefore believe it highly likely that this transaction, more fully described in Note 7, Income Taxes, to the Company's consolidated financial statements included in the 2017 Form 10-K, will be viewed by the U.S. Internal Revenue Service as a change of ownership as defined by Section 382 of the Internal Revenue Code, or Section 382. Consequently, the utilization of these net operating loss and tax credit carryforwards, as well as any additional net operating loss and tax credit carryforwards generated in 2015 through the issuance date, will be limited according to the provisions of Section 382, which will significantly limit the Company’s ability to use these carryforwards to offset taxable income on an annual basis in future periods. As such, a significant portion of these carryforwards will likely expire before they can be utilized, even if the Company is able to generate taxable income that, except for this transaction, would have been sufficient to fully utilize these carryforwards.

Earnings (Loss) per Share

Earnings (Loss) per Share

Basic net loss per share of common stock excludes dilution for potential common stock issuances and is computed by dividing net loss by the weighted average number of shares outstanding for the period. Diluted net loss per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock. Diluted net loss per share is identical to basic net loss per share as potentially dilutive securities have been excluded from the calculation of diluted net loss per common share because the inclusion of such securities would be antidilutive.

Contingencies

Contingencies

From time to time, the Company may have certain contingent liabilities that arise in the ordinary course of business. The Company accrues for liabilities when it is probable that future expenditures will be made and such expenditures can be reasonably estimated. For all periods presented, the Company was not a party to any pending material litigation that was estimable and had a probability of loss.

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Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2018

Accounting Policies [Abstract]

Revenue by Customer

The following table presents our revenue by customer, on a proportional basis, for the three and six months ended June 30, 2018 and 2017.

	Three Months Ended June 30,						Six Months Ended June 30,
Customer	2018		2017		Variance		2018		2017		Variance
Department of Defense	49.1	%	63.4	%	(14.3	)%	52.9	%	70.3	%	(17.4	)%
Incuron	50.9	%	36.6	%	14.3	%	47.1	%	29.7	%	17.4	%
Total	100.0	%	100.0	%	—	%	100.0	%	100.0	%	—	%

Changes in Accumulated Other Comprehensive Income (Loss)

The following table presents the changes in accumulated other comprehensive loss for the six months endedJune 30, 2018.

	Unrealized income (loss) on available-for-sale securities			Gains and losses on foreign exchange translations			Total
Beginning balance	$	(1,924	)	$	(514,533	)	$	(516,457	)
Other comprehensive income (loss) before reclassifications	1,978			(50,617		)	(48,639		)
Amounts reclassified from accumulated other comprehensive loss	—			—			—
Ending balance	$	54		$	(565,150	)	$	(565,096	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The Company has excluded the following securities from the calculation of diluted net loss per share because all such securities were antidilutive for the periods presented. Additionally, there were no dilutive securities outstanding as of June 30, 2018.

	As of June 30,
Common Equivalent Securities	2018	2017
Warrants	535,867	925,812
Options	172,631	217,921
Total	708,498	1,143,733

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Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2018

Fair Value Disclosures [Abstract]

Fair Value Hierarchy for Financial Assets and Liabilities Measured on Recurring Basis

The following tables represent the Company’s fair value hierarchy for its financial assets and liabilities measured at fair value on a recurring basis.

	As of June 30, 2018
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	77,343	$	—	$	—	$	77,343
Short-term investments	1,803,319		717,057		—		2,520,376
Total assets	$	1,880,662	$	717,057	$	—	$	2,597,719
Liabilities:
Accrued warrant liability	$	—	$	—	$	362,842	$	362,842

	As of December 31, 2017
	Level 1		Level 2		Level 3		Total
Assets:
Cash and cash equivalents	$	551,088	$	—	$	—	$	551,088
Short-term investments	3,606,499		954,858		—		4,561,357
Total assets	$	4,157,587	$	954,858	$	—	$	5,112,445
Liabilities:
Accrued warrant liability	$	—	$	—	$	1,041,455	$	1,041,455

Schedule of Share-Based Payment Award Warrant Liability Valuation Assumptions

The following are the assumptions used to measure the accrued warrant liability which were determined in a manner consistent with grants of options to purchase common stock:

	June 30, 2018			December 31, 2017
Stock Price	$	2.46		$	4.01
Exercise Price	$3.64  - $24.40			$ 3.00 - 24.40
Term in years	0.54 – 3.10			0.25 - 3.60
Volatility	52.63%  - 103.38%			71.48 - 139.58%
Annual rate of quarterly dividends	—		%	—		%
Discount rate- bond equivalent yield	1.27% - 2.64%			0.44 - 2.05%

Summary of Changes in Fair Value of Company's Level 3 Fair Value Measurements

The following table sets forth a summary of changes in the fair value of the Company’s Level 3 fair value measurements for the periods indicated:

	Three Months Ended June 30, 2018			Three Months Ended June 30, 2017
	Accrued Warrant Liability			Accrued Warrant Liability
Beginning Balance	$	532,913		$	1,071,117
Total (gains) or losses, realized and unrealized, included in earnings (1)	(170,071		)	4,124,009
Issuances	—			—
Settlements	—			(4,334,110		)
Ending Balance	$	362,842		$	861,016

	Six Months Ended June 30, 2018			Six Months Ended June 30, 2017
	Accrued Warrant Liability			Accrued Warrant Liability
Beginning Balance	$	1,041,455		$	949,419
Total (gains) or losses, realized and unrealized, included in earnings (1)	(678,613		)	4,245,707
Issuances	—			—
Settlements	—			(4,334,110		)
Ending Balance	$	362,842		$	861,016

(1) Unrealized gains or losses related to the accrued warrant liability were included as change in value of accrued warrant liability. There were no realized gains or losses for the three and six months ended June 30, 2018 and 2017.

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Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2018

Equity [Abstract]

Summary of Option Award Activity

The following is a summary of option award activity during the six months ended June 30, 2018:

	Total Stock Options Outstanding		Weighted Average Exercise Price per Share
December 31, 2017	211,487		$	36.94
Granted	—		—
Vested	—		—
Forfeited, Canceled	(38,856	)	44.60
June 30, 2018	172,631		$	35.22

Summary of Outstanding Stock Options

The following is a summary of outstanding stock options as of June 30, 2018:

	As of June 30, 2018
	Stock Options Outstanding		Vested Stock Options
Quantity	172,631		172,631
Weighted-average exercise price	$	35.22	$	35.22
Weighted Average Remaining Contractual Term (in Years)	5.14		5.14
Intrinsic value	$	—	$	—

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Warrants Warrants - (Tables)

6 Months Ended

Jun. 30, 2018

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

Summary of Outstanding Warrants

The following table summarizes the activity in our outstanding warrants since December 31, 2017:

	Number of Warrants		Weighted Average Exercise Price
December 31, 2017	710,174		$	8.95
Granted	—		—
Exercised	(18,405	)	3.00
Forfeited, Canceled	(155,902	)	3.00
June 30, 2018	535,867		$	10.89

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Description of Business - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2018 Subsidiary
BioLab 612
Subsidiary or Equity Method Investee [Line Items]
Number of wholly-owned subsidiaries	1

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Summary of Significant Accounting Policies - Basis of Presentation and Consolidation (Details) $ in Millions	Jun. 30, 2018 USD ($)
Accounting Policies [Abstract]
Cash, cash equivalents, and short-term investments	$ 6.5

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Summary of Significant Accounting Policies - Short Term Investments (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Net Investment Income [Line Items]
Short-term investments	$ 2,520,376	$ 4,561,357
US Treasury Securities
Net Investment Income [Line Items]
Short-term investments	1,800,000
Certificates of Deposit
Net Investment Income [Line Items]
Short-term investments	$ 700,000

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Summary of Significant Accounting Policies - Significant Customers and Accounts Receivable (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Sales Revenue, Services, Net | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Concentration risk percentage	100.00%	100.00%	100.00%	100.00%
Increase (decrease) in concentration risk percentage	0.00%		0.00%
Sales Revenue, Services, Net | Department of Defense | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Concentration risk percentage	49.10%	63.40%	52.90%	70.30%
Increase (decrease) in concentration risk percentage	(14.30%)		(17.40%)
Sales Revenue, Services, Net | Incuron | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Concentration risk percentage	50.90%	36.60%	47.10%	29.70%
Increase (decrease) in concentration risk percentage	14.30%		17.40%
Accounts Receivable
Revenue, Major Customer [Line Items]
Credit term			30 days

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Summary of Significant Accounting Policies - Other Compressive Income (Loss) (Details)	6 Months Ended
	Jun. 30, 2018 USD ($)
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	$ 7,408,370
Ending balance	5,259,674
Unrealized income (loss) on available-for-sale securities
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(1,924)
Other comprehensive income (loss) before reclassifications	1,978
Amounts reclassified from accumulated other comprehensive loss	0
Ending balance	54
Gains and losses on foreign exchange translations
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(514,533)
Other comprehensive income (loss) before reclassifications	(50,617)
Amounts reclassified from accumulated other comprehensive loss	0
Ending balance	(565,150)
Total
AOCI Including Portion Attributable to Noncontrolling Interest [Abstract]
Beginning balance	(516,457)
Other comprehensive income (loss) before reclassifications	(48,639)
Amounts reclassified from accumulated other comprehensive loss	0
Ending balance	$ (565,096)

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Summary of Significant Accounting Policies - Accounting for Stock-Based Compensation (Details) - shares	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted during period (in shares)	0	0	0
2006 Equity Incentive Plan (The Plan)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for issuance (in shares)		424,926
Shares available for future awards (in shares)		424,926
Common stock shares reserved for issuance upon exercise of currently outstanding stock options (in shares)		172,631
Maximum amount of shares that can be awarded annually to single participant (in shares)		100,000
Contractual life of shares awarded, maximum		10 years
2013 ESPP Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future awards (in shares)		525,000
Percentage of the total number of shares of common stock outstanding of the preceding year		10.00%
Maximum amount of shares of common stock that employee can purchase per year (in shares)		100,000
Maximum percentage of annual compensation that employee can use to purchase common stock shares		15.00%
Percent of fair market value that common stock can be purchased at		85.00%

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Summary of Significant Accounting Policies - Income Taxes (Details) - USD ($)		3 Months Ended		6 Months Ended
	Jul. 09, 2015	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Tax Credit Carryforward [Line Items]
Income tax expense (benefit)		$ 0	$ 0	$ 0	$ 0
Shares of common stock sold (in shares)	6,459,948
Expire in 2023
Tax Credit Carryforward [Line Items]
Net operating loss carryforwards						$ 139,700,000
Expire in 2027
Tax Credit Carryforward [Line Items]
U.S. state net operating loss carryforwards						84,200,000
Domestic Tax Authority | Expire in 2024
Tax Credit Carryforward [Line Items]
Tax credit carryforwards						4,046,000
State and Local Jurisdiction | Expire in 2022
Tax Credit Carryforward [Line Items]
Tax credit carryforwards						$ 311,000
Investor
Tax Credit Carryforward [Line Items]
Percent of company purchased	60.20%

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Summary of Significant Accounting Policies - Earnings (Loss) per Share (Detail) - shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	708,498	1,143,733
Options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	172,631	217,921
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities (in shares)	535,867	925,812

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Fair Value Measurements - Fair Value Hierarchy for Financial Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Liabilities:
Accrued warrant liability	$ 362,842	$ 1,041,455
Recurring
Assets:
Cash and cash equivalents	77,343	551,088
Short-term investments	2,520,376	4,561,357
Total assets	2,597,719	5,112,445
Recurring | Warrants
Liabilities:
Accrued warrant liability	362,842	1,041,455
Recurring | Level 1
Assets:
Cash and cash equivalents	77,343	551,088
Short-term investments	1,803,319	3,606,499
Total assets	1,880,662	4,157,587
Recurring | Level 1 | Warrants
Liabilities:
Accrued warrant liability	0	0
Recurring | Level 2
Assets:
Cash and cash equivalents	0	0
Short-term investments	717,057	954,858
Total assets	717,057	954,858
Recurring | Level 2 | Warrants
Liabilities:
Accrued warrant liability	0	0
Recurring | Level 3
Assets:
Cash and cash equivalents	0	0
Short-term investments	0	0
Total assets	0	0
Recurring | Level 3 | Warrants
Liabilities:
Accrued warrant liability	$ 362,842	$ 1,041,455

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Fair Value Measurements - Schedule of Share-Based Payment Award Warrant Liability Valuation Assumptions (Detail) - $ / shares	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Stock Price (in dollars per share)	$ 2.46	$ 4.01
Annual rate of quarterly dividends	0.00%	0.00%
Minimum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Exercise Price (in dollars per share)	$ 3.64	$ 3
Term in years	6 months 14 days	3 months
Volatility	52.63%	71.48%
Discount rate- bond equivalent yield	1.27%	0.44%
Maximum
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Exercise Price (in dollars per share)	$ 24.40	$ 24.4
Term in years	3 years 1 month 6 days	3 years 7 months 5 days
Volatility	103.38%	139.58%
Discount rate- bond equivalent yield	2.64%	2.05%

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Fair Value Measurements - Summary of Changes in Fair Value of Company's Level 3 Fair Value Measurements (Detail) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2018	Jun. 30, 2017
Accrued Warrant Liability
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 532,913	$ 1,071,117	$ 949,419	$ 1,041,455	$ 949,419
Total (gains) or losses, realized and unrealized, included in earnings	(170,071)	4,124,009		(678,613)	4,245,707
Issuances	0	0		0	0
Settlements	0	(4,334,110)		0	(4,334,110)
Ending balance	362,842	$ 861,016	1,071,117	362,842	$ 861,016
Series B Pre-funded Warrants
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Realized gains or losses	$ 0		$ 0	$ 0

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Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets or liabilities measured at fair value on a recurring basis	$ 0	$ 0
Minimum | Accrued Warrant Liability
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range in years	6 months 14 days
Maximum | Accrued Warrant Liability
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Range in years	3 years 1 month 6 days

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Stockholders' Equity - Summary of Option Award Activity (Detail) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Total Stock Options Outstanding
Total Stock Options Outstanding, Beginning balance (in shares)		211,487
Total Stock Options Outstanding, Granted (in shares)	0	0	0
Total Stock Options Outstanding, Vested (in shares)		0
Total Stock Options Outstanding, Forfeited, Canceled (in shares)		(38,856)
Total Stock Options Outstanding, Ending balance (in shares)		172,631
Weighted Average Exercise Price per Share
Weighted Average Exercise Price per Share, Beginning balance (in dollars per share)		$ 36.94
Weighted Average Exercise Price per Share, Granted (in dollars per share)		0.00
Weighted Average Exercise Price per Share, Vested (in dollars per share)		0.00
Weighted Average Exercise Price per Share, Forfeited, Canceled (in dollars per share)		44.60
Weighted Average Exercise Price per Share, Ending balance (in dollars per share)		$ 35.22

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Stockholders' Equity - Summary of Outstanding Stock Options (Detail) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Quantity (in shares)		172,631		211,487
Stock Options Outstanding, Weighted-average exercise price (in dollars per share)		$ 35.22		$ 36.94
Options Additional Information:
Options granted during period (in shares)	0	0	0
Total fair value of options vested		$ 0	$ 0
Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Options Outstanding, Quantity (in shares)		172,631
Stock Options Outstanding, Weighted-average exercise price (in dollars per share)		$ 35.22
Stock Options Outstanding, Weighted Average Remaining Contractual Term (in Years)		5 years 1 month 20 days
Stock Options Outstanding, Intrinsic value		$ 0
Vested Stock Options, Quantity ( in shares)		172,631
Vested Stock Options, Weighted-average exercise price ( in dollars per share)		$ 35.22
Vested Stock Options, Weighted Average Remaining Contractual Term (in Years)		5 years 1 month 20 days
Vested Stock Options, Intrinsic value		$ 0
Options Additional Information:
Compensation cost not yet recognized related to non-vested stock options		$ 0

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Warrants - (Detail) - Warrants - $ / shares	6 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Class of Warrant or Right [Line Items]
Exercise price (in dollars per share)	$ 10.89	$ 8.95
Minimum
Class of Warrant or Right [Line Items]
Exercise price (in dollars per share)	$ 3.64
Warrants expiration period	1 year
Maximum
Class of Warrant or Right [Line Items]
Exercise price (in dollars per share)	$ 24.40
Warrants expiration period	7 years

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Warrants Warrants - (Outstanding Warrant Activity) (Details) - Warrants	6 Months Ended
	Jun. 30, 2018 $ / shares shares
Number of Warrants
Number of Warrants Outstanding, Beginning Balance (in shares) | shares	710,174
Granted (in shares) | shares	0
Exercised (in shares) | shares	(18,405)
Forfeited, Canceled (in shares) | shares	(155,902)
Number of Warrants Outstanding, Ending Balance (in shares) | shares	535,867
Weighted Average Exercise Price
Weighted Average Exercise Price, Outstanding, Beginning Balance (in dollars per share) | $ / shares	$ 8.95
Weighted Average Exercise Price, Granted (in dollars per share) | $ / shares	0.00
Weighted Average Exercise Price, Exercised (in dollars per share) | $ / shares	3.00
Weighted Average Exercise Price, Forfeited, Canceled (in dollars per share) | $ / shares	3.00
Weighted Average Exercise Price, Outstanding, Ending Balance (in dollars per share) | $ / shares	$ 10.89

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Significant Alliances and Related Parties - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Related Party Transaction [Line Items]
Research and development expense	$ 908,907	$ 1,188,380	$ 2,245,377	$ 2,605,378
R P C I
Related Party Transaction [Line Items]
Expense related to research and grants	48,445	20,111	48,445	46,908
Accounts payable owed	29,602	87,964	29,602	87,964
Accrued expenses payable	84,429	85,102	84,429	85,102
Cleveland Clinic
Related Party Transaction [Line Items]
Expense related to research and grants		0	0
Royalty or milestone payments paid		0	0
Buffalo BioLabs
Related Party Transaction [Line Items]
Accounts payable owed	0	4,840	0	4,840
Accrued expenses payable	40,000	0	40,000	0
Research and development expense	44,128	84,519	332,008	154,065
Sublease and other income received	11,553	11,553	23,106	23,106
Accounts receivable related parties, gross	213,704	213,704	213,704	213,704
Accounts receivable related parties	11,553	11,553	11,553	11,553
Incuron
Related Party Transaction [Line Items]
Sublease and other income received	199,324	75,402	291,445	231,633
Accounts receivable related parties, gross	37,215	50,303	37,215	50,303
Incuron | Sublease and Other Income
Related Party Transaction [Line Items]
Sublease and other income received	$ 1,134	$ 1,776	$ 2,910	$ 3,552

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Subsequent Event (Details) - shares	Aug. 06, 2018	Jun. 30, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Common stock issued (in shares)		11,298,239	11,279,834
Consideration For License Agreement, Assignment Of Intellectual Property, Pursuant To Contribution And Subscription Agreement | Genome Protection, Inc., GPI | Subsequent Event
Subsequent Event [Line Items]
Common stock issued (in shares)	1,000
Joint Venture, Everon Contributed Intellectual Property To GPI In Exchange for Shares | Genome Protection, Inc., GPI | Subsequent Event
Subsequent Event [Line Items]
Common stock issued (in shares)	1,000
Joint Venture, Shares Received By The Company And Everon, From GPI | Genome Protection, Inc., GPI | Subsequent Event
Subsequent Event [Line Items]
Shares received by joint venture members (in shares)	1,000
Joint Venture, The Company And Everon Ownership In GPI | Genome Protection, Inc., GPI | Subsequent Event
Subsequent Event [Line Items]
Ownership percentage	50.00%