10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

(Mark One)
☑	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2020 Or
☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from ________ to ________.

Commission File No.: 001-39468

Sun BioPharma, Inc.

(Exact Name of Registrant as Specified in its Charter)

Delaware	87-0543922
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
712 Vista Blvd #305, Waconia, Minnesota 55387
(Address of principal executive offices)

(952) 479-1196

(Registrant’s telephone number, including area code)

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

Title of each class	Trading Symbol	Name of each exchange on which registered
Common Stock, $0.001 par value	SNBP	The Nasdaq Stock Market LLC

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

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☑   No ☐

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

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

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

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

On November 11, 2020 there were 9,649,427 shares of the registrant’s common stock, par value $0.001, outstanding.

1

Sun BioPharma, Inc.
Index to Quarterly Report on Form 10-Q

Page

PART I – FINANCIAL INFORMATION

Item 1.	Financial Statements (Unaudited).	3
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations.	13
Item 3.	Quantitative and Qualitative Disclosure About Market Risk.	19
Item 4.	Controls and Procedures.	20

PART II – OTHER INFORMATION

Item 1.	Legal Proceedings.	20
Item 1A.	Risk Factors.	20
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds.	21
Item 3.	Defaults Upon Senior Securities.	21
Item 4.	Mine Safety Disclosures.	21
Item 5.	Other Information.	21
Item 6.	Exhibits.	22

2

PART I – FINANCIAL INFORMATION

Item 1.     Financial Statements.

Sun BioPharma, Inc.
Condensed Consolidated Balance Sheets

(In thousands, except share amounts)

	September 30, 2020			December 31, 2019
	(Unaudited)
ASSETS
Current assets:
Cash	$	10,870		$	2,449
Prepaid expenses and other current assets		335			283
Income tax receivable		228			361
Total current assets		11,433			3,093
Other noncurrent assets		52			51
Total assets	$	11,485		$	3,144
LIABILITIES AND STOCKHOLDERS' EQUITY
Current liabilities:
Accounts payable	$	422		$	597
Accrued expenses		632			304
Term debt		37			116
Payroll protection plan loan		103			-
Unsecured promissory note payable		742			742
Total current liabilities		1,936			1,759
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 authorized; no shares issued or outstanding as of September 30, 2020 and December 31 2019		-			-
Common stock, $0.001 par value; 100,000,000 authorized; 9,649,427 and 6,631,308 shares issued and outstanding as of September 30, 2020 and December 31, 2019 respectively		10			7
Additional paid-in capital		54,544			42,331
Accumulated deficit		(45,146	)		(41,258	)
Accumulated comprehensive income		141			305
Total stockholders' equity		9,549			1,385
Total liabilities and stockholders' equity	$	11,485		$	3,144

See accompanying notes to condensed consolidated financial statements.

3

Sun BioPharma, Inc.

Condensed Consolidated Statements of Operations and Comprehensive Loss
(In thousands, except share and per share amounts)

 (Unaudited)

		Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Operating expenses:
General and administrative	$	1,223		$	622		$	2,348		$	1,505
Research and development		773			720			1,805			1,578
Operating loss		(1,996	)		(1,342	)		(4,153	)		(3,083	)
Other (expense) income:
Interest expense		(3	)		(3	)		(12	)		(2,187	)
Other income (expense)		239			(219	)		55			(287	)
Total other income (expense)		236			(222	)		43			(2,474	)
Loss before income tax benefit		(1,760	)		(1,564	)		(4,110	)		(5,557	)
Income tax benefit		89			190			222			331
Net loss		(1,671	)		(1,374	)		(3,888	)		(5,226	)
Foreign currency translation adjustment		(246	)		202			(164	)		219
Comprehensive loss	$	(1,917	)	$	(1,172	)	$	(4,052	)	$	(5,007	)
Basic and diluted net loss per share	$	(0.21	)	$	(0.23	)	$	(0.55	)	$	(0.97	)
Weighted average shares outstanding - basic and diluted		7,888,609			6,009,904			7,085,326			5,385,986

See accompanying notes to condensed consolidated financial statements.

4

Sun BioPharma, Inc.

Condensed Consolidated Statements of Stockholders’ Equity (Deficit)

(In thousands)

(Unaudited) 

	For the Nine Months Ended September 30, 2020
	Common Stock				Additional Paid-In		Accumulated			Accumulated Other Comprehensive			Total Stockholders'
	Shares		Amount		Capital		Deficit			Gain (Loss)			Equity
Balances as of January 1, 2020		6,631	$	7	$	42,331	$	(41,258	)	$	305		$	1,385
Warrants issued for future services		-		-		228		-			-			228
Stock-based compensation		-		-		112		-			-			112
Net loss		-		-		-		(1,798	)		-			(1,798	)
Foreign currency translation adjustment		-		-		-		-			797			797
Balances as of March 31, 2020		6,631	$	7	$	42,671	$	(43,056	)	$	1,102		$	724
Sale of common stock and warrants		437		-		1,746		-			-			1,746
Stock-based compensation		-		-		264		-			-			264
Net loss		-		-		-		(419	)		-			(419	)
Foreign currency translation adjustment		-		-		-		-			(715	)		(715	)
Balances as of June 30, 2020		7,068	$	7	$	44,681	$	(43,475	)	$	387		$	1,600
Public offering -issuance of common stock and warrants		2,545		3		9,218		-			-			9,221
Exercise of warrants for cash		28		-		52		-			-			52
Exercise of warrants, cashless		8		-		-		-			-			-
Stock-based compensation		-		-		593		-			-			593
Net loss		-		-		-		(1,671	)		-			(1,671	)
Foreign currency translation adjustment		-		-		-		-			(246	)		(246	)
Balances as of September 30, 2020		9,649	$	10	$	54,544	$	(45,146	)	$	141		$	9,549

	For the Nine Months Ended September 30, 2019
	Common Stock					Additional Paid-In			Accumulated			Accumulated Other Comprehensive			Total Stockholders'
	Shares			Amount		Capital			Deficit			Gain (Loss)			Equity (Deficit)
Balances as of January 1, 2019		5,077		$	5	$	35,038		$	(35,058	)	$	283		$	268
Beneficial conversion feature on convertible notes payable		-			-		353			-			-			353
Warrants issued with sale of convertible notes payable		-			-		419			-			-			419
Common stock converted into convertible notes payable		(7	)		-		(25	)		-			-			(25	)
Stock-based compensation		-			-		10			-			-			10
Net loss		-			-		-			(1,581	)		-			(1,581	)
Foreign currency translation adjustment		-			-		-			-			(32	)		(32	)
Balances as of March 31, 2019		5,070		$	5	$	35,795		$	(36,639	)	$	251		$	(588	)
Conversion of convertible notes payable and accrued interest		652			1		2,280			-			-			2,281
Stock-based compensation		-			-		412			-			-			412
Net loss		-			-		-			(2,271	)		-			(2,271	)
Foreign currency translation adjustment		-			-		-			-			49			49
Balances as of June 30, 2019		5,722		$	6	$	38,487		$	(38,910	)	$	300		$	(117	)
Sale of common stock and warrants		902			1		3,141			-			-			3,142
Stock-based compensation		-			-		536			-			-			536
Net loss		-			-		-			(1,374	)		-			(1,374	)
Foreign currency translation adjustment		-			-		-			-			202			202
Balances as of September 30, 2019		6,624		$	7	$	42,164		$	(40,284	)	$	502		$	2,389

See accompanying notes to condensed consolidated financial statements.

5

Sun BioPharma, Inc.

Condensed Consolidated Statements of Cash Flows
(In thousands)

(Unaudited)

	Nine Months Ended September 30
	2020			2019
Cash flows from operating activities:
Net loss	$	(3,888	)	$	(5,226	)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation		969			958
Amortization of debt discount		-			2,061
Amortization of debt issuance costs		-			12
Non-cash interest expense		-			102
Changes in operating assets and liabilities:
Income tax receivable		133			44
Prepaid expenses and other current assets		64			(12	)
Accounts payable		(347	)		179
Accrued liabilities		328			15
Net cash used in operating activities		(2,741	)		(1,867	)
Cash flows from financing activities:
Proceeds from sale of common stock and warrants net of offering costs of $2		1,746			3,142
Proceeds from public offering of common stock and warrants net of underwriters discount and offering costs of $1,165		9,335			-
Proceeds from the sale of convertible promissory notes, net of debt issuance costs of $7		-			810
Proceeds from exercise of warrants		52			-
Proceeds from payroll protection loan		103			-
Repayment of demand note		-			(25	)
Repayments of term debt		(81	)		(82	)
Net cash provided by financing activities		11,155			3,845
Effect of exchange rate changes on cash		7			(6	)
Net change in cash		8,421			1,972
Cash at beginning of period		2,449			1,405
Cash at end of period	$	10,870		$	3,377
Supplemental disclosure of cash flow information:
Cash paid during period for interest	$	5		$	11
Supplemental disclosure of non-cash transactions:
Warrants issued for future services	$	228		$	-
Warrants issued to underwriter	$	353		$	-
Cashless exercise of warrants	$	8		$	-
Amortization of warrants as offering costs	$	114		$	-
Beneficial conversion feature on convertible notes	$	-		$	353
Warrants issued with convertible notes	$	-		$	419
Common stock converted into convertible notes payable	$	-		$	25
Conversion of convertible notes payable and accrued interest into common stock	$	-		$	2,281
Issuance of unsecured promissory note in exchange of vendor accounts payable	$	-		$	742

See accompanying notes to condensed consolidated financial statements.

6

Sun BioPharma, Inc.
Notes to Condensed Consolidated Financial Statements

1.     Business

Sun BioPharma, Inc. and its wholly-owned subsidiary, Sun BioPharma Australia Pty Ltd. (collectively “we,” “us,” “our,” and the “Company”), exist for the primary purpose of advancing the commercial development of a proprietary polyamine analogue for the treatment of patients with pancreatic cancer. We have exclusively licensed the worldwide rights to this compound, which has been designated as SBP-101, from the University of Florida Research Foundation, Inc. (“UFRF”).

2.     Risks and Uncertainties

The Company operates in a highly regulated and competitive environment. The development, manufacturing and marketing of pharmaceutical products require approval from, and are subject to ongoing oversight by, the Food and Drug Administration (“FDA”) in the United States, the Therapeutic Goods Administration in Australia, the European Medicines Agency in the European Union, and comparable agencies in other countries. Obtaining approval for a new pharmaceutical product is never certain, may take many years, and is normally expected to involve substantial expenditures.

We have incurred losses of $45.1 million since our inception in 2011. For the nine months ended September 30, 2020, we incurred a net loss of $3.9 million. We also incurred negative cash flows from operating activities of $2.7 million for this period. As we continue to pursue development activities and seek commercialization of our initial product candidate, SBP-101, we expect to incur substantial losses, which are likely to generate negative net cash flows from operating activities. As of September 30, 2020, we had cash of $10.9 million, working capital of $9.5 million, (current assets less current liabilities) and stockholders’ equity of $9.5 million. On September 1, 2020, the Company completed an underwritten public offering of common stock resulting in net proceeds, after deducting the underwriting discount and other offering expense, of $9.3 million and the listing of our common stock on the Nasdaq Capital Market tier of The Nasdaq Stock Market LLC (“Nasdaq”). Prior to the public offering the Company’s principal sources of cash consisted of issuances of debt and equity securities through private placements. As a result of the Company’s listing on Nasdaq an unsecured promissory note in the amount of $742,000 became payable. The Company used a portion of the net proceeds of the underwritten offering to pay this balance in full early in the fourth quarter.

The accompanying condensed consolidated financial statements have been prepared assuming that we will continue as a going concern, which contemplates the realization of assets and liquidation of liabilities in the normal course of business. The condensed consolidated financial statements do not include any adjustments relating to the recoverability or classification of assets or the amounts of liabilities that might result from the outcome of these uncertainties. Our current independent registered public accounting firm included a paragraph emphasizing this going concern uncertainty in their audit report regarding our 2019 financial statements dated March 24, 2020. Our ability to continue as a going concern, realize the carrying value of our assets and discharge our liabilities in the ordinary course of business is dependent upon a number of factors, including our ability to obtain additional financing, the success of our development efforts, our ability to obtain marketing approval for our SBP-101 product candidate in the United States, Australia, the European Union or other markets and ultimately our ability to market and sell our SBP-101 product candidate. These factors, among others, raised substantial doubt about our ability to continue operations as a going concern. See Note 4 titled “Liquidity and Business Plan.”

In March 2020, the World Health Organization declared the spread of a novel strain of coronavirus (“COVID-19”) a global pandemic. Actions have been taken by federal, state and local governmental authorities to combat the spread of COVID-19, including through issuances of “stay-at-home” directives and similar mandates for many individuals to substantially restrict daily activities and for many businesses to curtail or cease normal operations. These measures, while intended to protect human life, have led to significantly reduced economic activity. While many state and local authorities have started to reopen businesses, others have adopted additional measures to mitigate COVID-19 and the rapid development and uncertainty of the situation continues to preclude any prediction as to the ultimate impact COVID-19 will have on the Company's business, financial condition, results of operation and cash flows, which will depend largely on future developments directly or indirectly relating to the duration and scope of the COVID-19 outbreak in the United States and Australia. On April 3, 2020, we initiated a temporary pause in the enrollment of new patients in our ongoing clinical trial. On May 20, 2020, we reauthorized our clinical sites to resume recruitment and enrollment of patients in our clinical trial. We continued to treat patients already enrolled throughout the temporary pause in enrollment. New enrollments have not been interrupted again since the temporary pause was lifted in May of 2020.

7

3.     Basis of Presentation

We have prepared the accompanying interim condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and with the instructions to Form 10-Q and Regulation S-X of the Securities and Exchange Commission (“SEC”). Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. These interim condensed consolidated financial statements reflect all adjustments consisting of normal recurring accruals, which, in the opinion of management, are necessary to present fairly our consolidated financial position, consolidated results of operations and consolidated cash flows for the periods and as of the dates presented. Our fiscal year ends on December 31. The condensed consolidated balance sheet as of December 31, 2019 was derived from audited consolidated financial statements but does not include all disclosures required by U.S. GAAP. These interim condensed consolidated financial statements should be read in conjunction with the annual consolidated financial statements and the notes thereto included in our most recent filed Annual Report on Form 10-K and our subsequent filings with the SEC. The nature of our business is such that the results of any interim period may not be indicative of the results to be expected for the entire year.

4.     Liquidity and Business Plan

On September 1, 2020, the Company consummated an underwritten public offering of 2,545,454 shares of common stock and warrants to purchase the same number of shares of common stock which resulted in net proceeds of approximately $9.3 million. In the quarter ended June 30, 2020, the Company sold common stock and warrants to purchase common stock in private placements to certain accredited investors resulting in net proceeds of approximately $1.7 million. We expect the proceeds of these offerings will be sufficient to fund our planned business operations into the first half of 2022. We will need to raise additional capital in the future to support our operations.

Our future success is dependent upon our ability to obtain additional financing, the success of our development efforts, our ability to obtain marketing approval for our SBP-101 product candidate in the United States or other markets and ultimately our ability to market and sell our SBP-101 product candidate. If we are unable to obtain additional financing when needed, if our clinical trials are not successful or if we are unable to obtain marketing approval, we would not be able to continue as a going concern and would be forced to cease operations and liquidate our company.

There can be no assurances that we will be able to obtain additional financing on commercially reasonable terms, or at all. The sale of additional convertible debt or equity securities would likely result in dilution to our current stockholders.

5.     Summary of Significant Accounting Policies

Principles of consolidation

The accompanying condensed consolidated financial statements include the assets, liabilities, and expenses of the Company. All significant intercompany transactions and balances have been eliminated in consolidation.

Use of estimates

The preparation of condensed consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amount of expenses during the reporting period. Actual results could differ from those estimates.

8

Research and development costs

Research and development costs include expenses incurred in the conduct of our second Phase 1 human clinical trial, for third-party service providers performing various testing and accumulating data related to our preclinical studies; sponsored research agreements; developing and scaling the manufacturing process necessary to produce sufficient amounts of the SBP-101 compound for use in our pre-clinical studies and human clinical trials; consulting resources with specialized expertise related to execution of our development plan for our SBP-101 product candidate; personnel costs, including salaries, benefits and share-based compensation; and costs to license and maintain our licensed intellectual property.

We charge research and development costs, including clinical trial costs, to expense when incurred. Our human clinical trials are, and will be, performed at clinical trial sites and are administered jointly by us with assistance from contract research organizations (“CROs”). Costs of setting up clinical trial sites are accrued upon execution of the study agreement. Expenses related to the performance of clinical trials generally are accrued based on contracted amounts and the achievement of agreed upon milestones, such as patient enrollment, patient follow-up, etc. We monitor levels of performance under each significant contract, including the extent of patient enrollment and other activities through communications with the clinical trial sites and CROs, and adjust the estimates, if required, on a quarterly basis so that clinical expenses reflect the actual effort expended at each clinical trial site and by each CRO.

All material CRO contracts are terminable by us upon written notice and we are generally only liable for actual effort expended by the CROs and certain non-cancelable expenses incurred at any point of termination.

We expense costs associated with obtaining licenses for patented technologies when it is determined there is no alternative future use of the intellectual property subject to the license.

Stock-based compensation

In accounting for stock-based incentive awards, we measure and recognize the cost of employee and non-employee services received in exchange for awards of equity instruments based on the fair value of those awards on the grant date. Calculating stock-based compensation expense requires the input of highly subjective assumptions, which represent our best estimates and involve inherent uncertainties and the application of management’s judgment. Compensation cost is recognized ratably using the straight-line attribution method over the vesting period, which is considered to be the requisite service period. Compensation expense for performance-based stock option awards is recognized when “performance” has occurred or is probable of occurring.

The fair value of stock-based awards is estimated at the date of grant using the Black-Scholes option pricing model. The determination of the fair value of stock-based awards is affected by our stock price, as well as assumptions regarding a number of complex and subjective variables. Risk free interest rates are based upon U.S. Treasury rates appropriate for the expected term of each award. Expected volatility rates are based primarily on the volatility rates of a set of guideline companies, which consist of public and recently public biotechnology companies. The assumed dividend yield is zero, as we do not expect to declare any dividends in the foreseeable future. The expected term of options granted is determined using the “simplified” method. Under this approach, the expected term is presumed to be the mid-point between the average vesting date and the end of the contractual term.

Foreign currency translation adjustments

The functional currency of Sun BioPharma Australia Pty Ltd is the Australian Dollar. Accordingly, assets and liabilities, and equity transactions of Sun BioPharma Australia Pty Ltd are translated into U.S. dollars at period-end exchange rates. Revenues and expenses are translated at the average exchange rate in effect for the period. The resulting translation gains and losses are recorded as a component of accumulated comprehensive loss presented within the stockholders’ equity (deficit). During the nine-month periods ended September 30, 2020 and 2019, any reclassification adjustments from accumulated other comprehensive loss to operations were inconsequential.

Comprehensive loss

Comprehensive loss consists of our net loss and the effects of foreign currency translation.

Net loss per share

Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is based on the weighted average of common shares outstanding during the period plus dilutive potential common shares calculated using the treasury stock method. Such potentially dilutive shares are excluded when the effect would be anti-dilutive or reduce a net loss per share. The Company’s potential dilutive shares, which include outstanding common stock options and warrants, have not been included in the computation of diluted net loss per share for all periods as the result would be anti-dilutive.

9

The following table sets forth the potential shares of common stock that were not included in the calculation of diluted net loss per share as their effects would have been anti-dilutive as of:

		September 30,
	2020		2019
Employee and non-employee stock options		2,170,459		1,711,511
Common stock issuable under common stock purchase warrants		6,571,468		3,417,099
		8,741,927		5,128,610

6.     Indebtedness

Term debt

The terms of our unsecured loan (the “Term Debt”) payable to the Institute for Commercialization of Public Research, Inc. (the “Institute”) which was amended in December of 2019 to extend the maturity date from December 31, 2019 to December 31, 2020, remain unchanged as of September 30, 2020. The fair market value of the warrants issued in 2019 in exchange for modification of the terms is being amortized to interest expense over the remaining term of the loan. The amendment requires the continuation of monthly payments of principal and interest totaling $10,000. The unpaid principal balance on September 30, 2020 was $39,000.

PPP loan

On May 1, 2020, the Company obtained a loan in the principal amount of approximately $103,000 from Bank of America pursuant to the Paycheck Protection Program (“PPP”) of the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act administered by the U.S. Small Business Administration (“SBA”). In accordance with the requirements of the CARES Act, the Company has used the proceeds of the loan exclusively for qualified expenses, including payroll costs, as further detailed in the CARES Act and applicable guidance issued by the SBA. The loan is evidenced by an unsecured promissory note and interest is scheduled to accrue on the outstanding balance at a rate of 1.0% per annum beginning on November 1, 2020. However, the Company expects to be eligible to apply for forgiveness of up to all of the principal and interest due under the loan, in an amount equal to the sum of qualified expenses under the PPP during the twenty-four weeks following disbursement. Notwithstanding the Company’s anticipated eligibility to apply for forgiveness, no assurance can be given that it will obtain forgiveness of all or any portion of the amount due under the loan. Subject to any such forgiveness granted under the PPP, the loan is scheduled to mature on May 1, 2022 and may require us to commence payments of principal and interest as soon as November 2020. The loan may be prepaid at any time prior to maturity with no prepayment penalties. The unsecured promissory note governing the loan provides for customary events of default, including, among others, those relating to failure to make payments, bankruptcy, breaches of representations, significant changes in ownership, and material adverse effects. The Company’s obligations under the note are not secured by any collateral. The Company completed the application for forgiveness in November 2020, although a decision is not expected from the SBA before December 31, 2020.

Other indebtedness

On May 17, 2019, the Company executed an unsecured promissory note with a vendor that relieved the Company’s immediate obligation to pay the outstanding vendor invoices. The outstanding vendor invoices totaling approximately $742,000 were removed from the Company’s accounts payable as consideration for the promissory note. The promissory note was unsecured, did not bear interest and the balance became payable in full on September 1, 2020 as a result of the Company’s stock being listed on the Nasdaq securities exchange. On October 6, 2020, the Company paid the balance in full.

10

7.     Stockholders’ Equity

Public offering of common stock and warrants

On September 1, 2020, the Company closed an underwritten public offering of 2,545,454 shares of its common stock and warrants to purchase an aggregate of up to the same number of additional shares of common stock. The warrants are exercisable for a period of five years from the date of issuance at an initial exercise price of $4.54. The gross proceeds from the offering was approximately $10.5 million. The net proceeds, after deducting the underwriters discount and other offering costs was approximately $9.3 million. The securities were offered pursuant to a registration statement on Form S-1 (File No. 333-239661). In connection with this offering, the Company’s common stock was approved for listing and began trading on Nasdaq on August 28, 2020. See also Note 4, titled “Liquidity and Business Plan.”

Underwriter common stock

On September 1, 2020, the Company issued to the underwriter in the public offering a five-year warrant to purchase 127,273 shares of common stock at an exercise price of $4.538. The fair market value of the warrant, totaling approximately $353,000, has been charged against the net proceeds of the sale of the common stock on that date.

Exercise of Warrants to purchase common stock

On September 1, 2020, the Company issued 35,665 shares of common stock as a result of the exercise of outstanding warrants that were set to expire as a result of the public offering. All of the warrants were exercised at $1.875 per share. Of the shares issued, 27,500 were issued for approximately $52,000 cash. One warrant to purchase 15,000 shares of common stock was exercised on a net, cashless basis, resulting in the issuance of the remaining 8,165 shares.

Private placements of common stock and warrants

During the nine months ended September 30,2020, the Company issued an aggregate of 437,000 shares of common stock and warrants to purchase an aggregate of up to the same number of additional shares of common stock pursuant to securities purchase agreements. The warrants are exercisable for a period of five years from the date of issuance at an initial exercise price of $6.00. See Note 4, titled “Liquidity and Business Plan.”

Warrants to purchase common stock issued for future services

On February 21, 2020, the Company issued to a service provider a five-year warrant to purchase 75,000 shares of common stock at an exercise price of $6.49 per share. The fair market value of the warrant in the amount of approximately $228,000 was capitalized and will be charged against future proceeds. On September 1, 2020, one half of the capitalized amount was charged against additional paid in capital to recognize the partial completion of the services retained.

Shares of common stock reserved for future issuance were as follows as of September 30, 2020:

Stock options outstanding	2,170,459
Shares available for grant under equity incentive plan	893,901
Common shares issuable under outstanding common stock purchase warrants	6,571,468
	9,635,828

11

8.     Stock-based Compensation

2016 Omnibus Incentive Plan

The Sun BioPharma, Inc. 2016 Omnibus Incentive Plan, as last amended effective April 9, 2020 (the “2016 Plan”), has been approved by our Board of Directors and ratified by our stockholders. The 2016 Plan permits the granting of incentive and non-statutory stock options, restricted stock, stock appreciation rights, performance units, performance shares and other stock awards to eligible employees, directors and consultants. We grant options to purchase shares of common stock under the 2016 Plan with an exercise price not less than the fair market value of the underlying common stock as of the date of grant. Options granted under the 2016 Plan have a maximum term of ten years. Under the 2016 Plan, a total of 2,800,000 shares of common stock have been reserved for issuance. As of September 30, 2020, options to purchase 1,906,099 shares of common stock were outstanding under the 2016 Plan and 893,901 shares remained available for future awards.

2011 Stock Option Plan

Our Board of Directors ceased making awards under the Sun BioPharma, Inc. 2011 Stock Option Plan (the “2011 Plan”) upon the receipt of stockholder approval for the 2016 Plan. Awards outstanding under the 2011 Plan remain outstanding in accordance with and pursuant to the terms thereof. Options granted under the 2011 Plan have a maximum term of ten years and generally vest over zero to two years for employees. As of September 30, 2020, options to purchase 264,360 shares of common stock remained outstanding under the 2011 Plan.

Stock-based Compensation Expense

General and administrative (“G&A”) and research and development (“R&D”) expenses include non-cash stock-based compensation expense as a result of our issuance of stock options. The terms and vesting schedules for stock-based awards vary by type of grant and the employment status of the grantee. The awards granted through September 30, 2020 vest based upon time-based and performance conditions. There was approximately $1.7 million unamortized stock-based compensation expense related to options granted to employees as of September 30, 2020.

Stock-based compensation expense for each of the periods presented is as follows (in thousands):

	Nine Months Ended September 30,
	2020		2019
General and administrative	$	860	$	573
Research and development		109		385
	$	969	$	958

Details of options granted, exercised, cancelled or forfeited during the nine months ended September 30, 2020 follows:

	Shares Available for Grant			Shares Underlying Options		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value
Balance at January 1, 2020		19,549			1,744,811	$	6.53	$	1,047,197
Additional shares available to grant		1,300,000			-		-
Granted		(425,648	)		425,648		7.48
Exercised		-			-		-
Cancelled		-			-		-
Forfeitures		-			-		-
Balance at September 30, 2020		893,901			2,170,459	$	6.71	$	96,122

12

Information about stock options outstanding, vested and expected to vest as of September 30, 2020, is as follows:

			Outstanding, Vested and Expected to Vest						Options Vested and Exercisable
Per Share Exercise Price			Shares		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Options Exercisable		Weighted Average Remaining Contractual Life (Years)
$0.875	-	$1.10		26,360		2.25	$	1.03		26,360		2.25
$2.275	-	$2.50		38,000		3.37	$	2.46		38,000		3.37
$2.95	-	$3.70		774,100		7.57	$	3.04		605,950		7.26
$4.50	-	$8.10		751,900		7.94	$	6.24		563,500		7.39
$9.99	-	$10.10		266,048		9.18	$	9.99		107,012		8.28
$15.10				314,051		5.65	$	15.10		310,551		5.70
Totals				2,170,459		7.48	$	6.36		1,651,373		7.07

Key assumptions

The estimated grant-date fair values of the stock options were calculated using the Black-Scholes valuation model, based on the following assumptions for the nine months ended September 30, 2020:

	2020
Common stock fair value		$4.82	-	$9.99
Risk-free interest rate		0.29%	-	0.39%
Expected dividend yield			0
Expected Option life (years)		5.00	-	5.75
Expected stock price volatility			90%

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

This Quarterly Report and other publicly available documents, including any documents incorporated herein and therein by reference contain, and our officers and representatives may from time to time make, “forward-looking statements,” including within the meaning of the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995. When used in the following discussion, the words “anticipates,” “continue,” “intends,” “believes,” “expects,” “intends,” “plans,” ”seeks,” “estimates,” “likely,” “may,” “would,” “will,” and similar expressions, as they relate to us or our management, are intended to identify such forward-looking statements. Examples of forward-looking statements include, among others, statements we make regarding (i) our plans to complete Phase 1b; and (ii) our estimates of additional funds that may be required to complete Phase 1b and obtain necessary approvals.

Forward-looking statements are neither historical facts nor assurances of future performance. Instead, they are based only on our current beliefs, expectations and assumptions regarding the future of our business, future plans and strategies, projections, anticipated events and trends, the economy and other future conditions. Because forward-looking statements relate to the future, they are subject to inherent uncertainties, risks and changes in circumstances that are difficult to predict and many of which are outside of our control. Our actual results and financial condition may differ materially and adversely from the forward-looking statements. Therefore, you should not rely on any of these forward-looking statements. Important factors that could cause our actual results and financial condition to differ materially from those indicated in the forward-looking statements include, among others, the following: (i) our ability to obtain additional funding to complete a Phase 2 clinical trial; (ii) progress and success of our pending and any subsequent clinical trials; (iii) the impact of the COVID-19 pandemic on our ability to add new clinical sites for, complete enrollment in and administer clinical trials; (iv) our ability to demonstrate the safety and effectiveness of our SBP-101 product candidate (v) our ability to obtain regulatory approvals for our SBP-101 product candidate in the United States, the European Union or other international markets; (vi) the market acceptance and level of future sales of our SBP-101 product candidate; (vii) the cost and delays in product development that may result from changes in regulatory oversight applicable to our SBP-101 product candidate; (viii) the rate of progress in establishing reimbursement arrangements with third-party payors; (ix) the effect of competing technological and market developments; (x) the costs involved in filing and prosecuting patent applications and enforcing or defending patent claims; and (xi) such other factors as discussed in Part I, Item 1A under the caption “Risk Factors” in our most recent Annual Report on Form 10-K, any additional risks presented in our Quarterly Reports on Form 10-Q and our Current Reports on Form 8-K.

Any forward-looking statement made by us in this Quarterly Report is based on information currently available to us and speaks only as of the date on which it is made. We undertake no obligation to publicly update any forward-looking statement or reasons why actual results would differ from those anticipated in any such forward-looking statement, whether written or oral, whether as a result of new information, future developments or otherwise.

13

Overview

The Company exists for the primary purpose of advancing the commercial development of a proprietary polyamine analogue for pancreatic cancer and for potential additional indications in certain other solid tumor cancers. We have exclusively licensed the worldwide rights to this compound, which has been designated as SBP-101, from the UFRF.

In August 2015, the Food and Drug Administration of the United States (“FDA”) granted an Investigational New Drug (“IND”) approval for our SBP-101 product candidate. From January 2016 through September 2017, we enrolled twenty-nine patients into six cohorts, or groups, in the mono-therapy, dose-escalation phase of a Phase 1 safety trial and published results in the Spring of 2018. The Company’s second trial, a Phase 1a/1b combination of SBP-101 with gemcitabine and nab-paclitaxel in patients previously untreated for metastatic pancreatic ductal adenocarcinoma (“PDA”), began dosing patients in June of 2018. The Phase 1a portion of this study has a total of 4 dosing levels, cohorts, and determined a recommended dose (and schedule) of SBP-101 to be given in combination with standard treatment. The Company completed enrollment of the fourth cohort in the quarter ended March 31, 2020. Enrollment in the expansion cohort (1b) phase of the trial began immediately after enrollment in the fourth cohort. Due to the COVID-19 pandemic, the Company paused enrollment in the expansion phase of the study for 7 weeks in the quarter ended June 30, 2020. All patients enrolled prior to the pause continued to receive treatment. Recruiting and enrollment of subjects resumed in May of 2020 and has continued without further interruptions. Promising interim results were presented in a poster presentation at ASCO-GI. The poster contained data as of January 4, 2020 in the response-evaluable subjects in cohorts 2 and 3 (N=13). The conclusions, at that time, reflected (i) an objective response rate of 62%; 4 PRs were observed after 2 cycles of therapy and 4 PRs were observed after 4 cycles of therapy and (ii) a disease control rate (“DCR”) of 85% by RECIST criteria (at least SD for ≥ 16 weeks); 4 subjects had not reached week 16 scans. Subsequent to the publication of these results, an investigator reclassified one patient from PR to SD, resulting in an objective response rate of 54%. Results of the full (1a/1b) study are expected to become available in the first half of 2021.

In June of 2020, the FDA designated a Fast Track development program to the investigation of SBP-101 for the treatment of first-line patients with metastatic PDA when administered in combination with gemcitabine and nab-paclitaxel.

Additional clinical trials will be required for FDA approval or other similar approvals if the results of the current clinical trial of our SBP-101 product candidate remain positive. We are evaluating the appropriate timing and study design of the next clinical trial to be initiated at the completion of the expansion phase of the current study. It is expected to be a randomized trial for patients with first-line metastatic PDA. Current resources will allow us to begin this next trial in the first half of 2021, but additional funds will likely be required to complete the trial. The cost and timing of additional clinical trials are highly dependent on the nature and size of the trials.

Effective July 15, 2020, Jennifer K. Simpson was appointed to succeed Michael T. Cullen as President and Chief Executive Officer and elected to serve as an additional member of our board of directors. Dr. Simpson has more than 25 years of experience across a variety of executive, business operations, marketing and clinical development roles in the biopharmaceutical industry. Dr. Cullen continues to serve as Executive Chairman and remains actively engaged with the Company.

Financial Overview 

We have incurred losses of $45.1 million since the inception of our business in 2011. For the nine months ended September 30, 2020, we incurred a net loss of $3.9 million. We also incurred negative cash flows from operating activities of $2.7 million for this period. We expect to continue to incur substantial losses, which will generate negative net cash flows from operating activities, as we continue to pursue research and development activities and commercialize our SBP-101 product candidate.

14

Our cash was approximately $10.9 million and $2.4 million as of September 30, 2020 and December 31, 2019, respectively.

On September 1, 2020 we closed a public offering of 2,545,454 shares of common stock and five-year warrants to purchase the same amount of common stock. The gross proceeds of the offering were approximately $10.5 million. We received net proceeds of approximately $9.3 million, after deducting the underwriting discounts and commissions and offering expenses. In connection with this offering the Company’s common stock was approved for listing and began trading on the Nasdaq Capital Market tier of the Nasdaq Stock Market LLC (“Nasdaq”) on August 28, 2020. We expect the cash on hand at the end of the third quarter will be sufficient to fund our planned business operations into the first half of 2022.

Other than the temporary pause in enrollment in our current clinical trial, the Company has not experienced any significant disruptions to our operations as a result of the COVID-19 pandemic. Recruitment and enrollment were resumed in May of 2020 and will continue as conditions allow until the expansion cohort is fully enrolled which is expected by the end of 2020. The Company was not required to change management practices as it was decentralized prior to the COVID-19 pandemic.

Based on anticipated use of cash we expect the proceeds of the recent sale of equity securities will be sufficient to fund our expected operations into the first half of 2022.We will need to obtain additional funds to continue our operations and execute our current business plans, including completing required future trials and pursuing regulatory approvals in the United States, the European Union and other international markets, and laboratory studies to explore potential indications in other cancer types. We historically have financed our operations principally from the sale of equity securities and debt. While we have been successful in the past in obtaining the necessary capital to support our operations, and have similar future plans to obtain additional financing, there is no assurance that we will be able to obtain additional financing under commercially reasonable terms and conditions, or at all. This risk would increase if our clinical data is inconclusive or not positive or economic conditions worsen in the market as a whole or in the pharmaceutical or biotechnology markets individually.

If we are unable to obtain additional financing when needed, we will likely need to reduce our operations by taking actions that may include, among other things, reducing use of outside professional service providers, reducing staff or reducing staff compensation, significantly modifying or delaying the development of our SBP-101 product candidate, licensing rights to third parties, including the right to commercialize our SBP-101 product candidate for pancreatic cancer, or other applications that we would otherwise seek to pursue, or discontinue operations entirely.

Results of Operations

Comparison of the results of operations (in thousands):

	Three months Ended September 30,									Nine Months Ended September 30,
	2020			2019			Percent Change			2020			2019			Percent Change
Operating Expenses
General and administrative	$	1,223		$	622			96.6	%	$	2,348		$	1,505			56.0	%
Research and development		773			720			7.4	%		1,805			1,578			14.4	%
Total operating expenses		1,996			1,342			48.7	%		4,153			3,083			34.7	%
Other income (expense) net		236			(222	)		-206.3	%		43			(2,474	)		-101.7	%
Income tax benefit		89			190			-53.2	%		222			331			-32.9	%
Net Loss	$	(1,671	)	$	(1,374	)		21.6	%	$	(3,888	)	$	(5,226	)		-25.6	%

General and administrative (“G&A”) expenses consist primarily of salaries, incentive compensation and other employee benefits, including stock-based compensation. Other G&A expenses include professional fees for accounting and tax, legal services, insurance, and costs associated with being a publicly traded company including directors and officer’s liability insurance premiums.

Research and development (“R&D”) expenses consist primarily of clinical and regulatory costs, costs incurred under agreements with contract research organizations, pre commercial manufacturing and stability testing and employee compensation related expenses.

R&D and G&A expenses include non-cash stock-based compensation expense because of our issuances of stock options. We expense the fair value of equity awards over their vesting periods. The terms and vesting schedules for share-based awards vary by type of grant and the employment status of the grantee. The awards granted through September 30, 2020 vest upon performance and time-based conditions. We expect to record additional non-cash share-based compensation expense in the future, which may be significant.

15

The following table summarizes the stock-based compensation expense in our statements of comprehensive loss for (in thousands):

	Nine Months Ended September 30
	2020		2019
General and administative	$	860	$	573
Research and development		109		385
Total stock based compensation	$	969	$	958

Other Expense, net consists primarily to foreign currency exchange gains or losses and amortization of debt discounts on convertible notes.

Three months ended September 30, 2020 and September 30, 2019

General and administrative expense

For the three months ended September 30, 2020 and 2019 G&A expenses were $1.2 million and $0.6 million, respectively. The increase is due to higher employee compensation expense.

Research and development expense

For the three months ended September 30, 2020 and 2019 R&D expenses were $0.8 million and $0.7 million, respectively. The increase was primarily due to higher spending on the current clinical trial.

Other income (expense), net

Other income, net, was $236,000 for the three months ended September 30, 2020 and is primarily the result of a foreign currency exchange gain. The net expense of approximately $222,000 in the three months ended September 30, 2019 is primarily a foreign exchange loss.

Income tax benefit

Income tax benefit decreased to $89,000 for the three months ended September 30, 2020 down from $190,000 during the three months ended September 30, 2019. Our income tax benefit is derived primarily from refundable tax credits associated with our R&D activities conducted in Australia which were decreased in the quarter.

Nine months ended September 30, 2020 and September 30, 2019

General and administrative expense

For the nine months ended September 30, 2020 and 2019 G&A expenses were $2.3 million and $1.5 million, respectively. The increase is due to increased employee compensation expense as well as increased spending on consulting and legal services.

Research and development expense

For the nine months ended September 30, 2020 and 2019 R&D expenses were $1.8 million and $1.6 million, respectively. The increase was due primarily to increased spending on the current clinical trial resulting from 2 new sites in 2020 versus the same period in 2019.

16

Other income (expense), net

Other income, net, was $43,000 for the nine months ended September 30, 2020 and is primarily the result of a foreign currency exchange gain. The net expense approximately $2.5 million in the nine months ended September 30, 2019 is primarily the amortization of debt discount on convertible notes sold in December 2018 and January 2019, all of which converted into equity securities in 2019.

Income tax benefit

Income tax benefit decreased slightly to $222,000 for the nine months ended September 30, 2020 down from $331,000 during the nine months ended September 30, 2019. Our income tax benefit is derived primarily from refundable tax credits associated with our R&D activities conducted in Australia.

Liquidity and Capital Resources

The following table summarizes our liquidity and capital resources as of September 30, 2020 and December 31, 2019 and our cash flow data for the nine months ended September 30, 2020 and 2019 and is intended to supplement the more detailed discussion that follows (in thousands):

Liquidity and Capital Resources
	September 30, 2020		December 31, 2019
Cash	$	10,870	$	2,449
Working capital	$	9,497	$	1,334

Cash Flow Data	Nine Months Ended September 30,
	2020			2019
Cash Provided by (Used in):
Operating Activities	$	(2,741	)	$	(1,867	)
Investment Activities		-			-
Financing Activities		11,155			3,845
Effect of exchange rate changes on cash		7			(6	)
Net change in cash	$	8,421		$	1,972

Working Capital

Our total cash was $10.9 million and $2.4 million as of September 30, 2020 and December 31, 2019, respectively. We had $1.9 million in current liabilities and working capital of $9.5 million as of September 30, 2020, compared to $1.8 million in current liabilities and a working capital of $1.3 as of December 31, 2019.  Working capital is calculated as current assets less current liabilities.

Cash Flows

Net Cash Used in Operating Activities

Net cash used in operating activities was $2.7 million in the nine months ended September 30, 2020 compared to $1.9 million in the nine months ended September 30, 2019. The net cash used in each of these periods primarily reflects the net loss for these periods and is partially offset by the effects of changes in operating assets and liabilities.

Net Cash Provided by Financing Activities

Net cash provided by financing activities was $11.2 million and $3.8 million for the nine months ended September 30, 2020 and September 30, 2019, respectively. The cash provided for the nine months ended September 30, 2020 represents the net proceeds of $9.3 million from the underwritten public offering completed on September 1, 2020 and the sales of common stock and warrants in private placements to accredited investors completed in May and June of 2020 for net proceeds of $1.7 million. The cash provided for the nine months ended September 30, 2019 represents the net proceeds from the sale of convertible notes and the sale of common stock and warrants in private placements to accredited investors.

17

Capital Requirements

As we continue to pursue our operations and execute our business plan, including the completion of our current Phase 1 clinical trial for our initial product candidate, SBP-101, in pancreatic cancer, planning for required future trials and pursuing regulatory approvals in the United States, the European Union and other international markets, we expect to continue to incur substantial and increasing losses, which will continue to generate negative net cash flows from operating activities.

Our future capital uses, and requirements depend on numerous current and future factors. These factors include, but are not limited to, the following:

● the progress of clinical trials required to support our applications for regulatory approvals, including our Phase 1a /1b clinical trial, a human clinical trial in Australia and the United States, and the planning and initiation of the next clinical trial, likely a randomized trial in several countries;

● the impact of the COVID-19 pandemic on our ability to monitor and complete enrollment in our clinical trials;

● our ability to demonstrate the safety and effectiveness of our SBP-101 product candidate;

● our ability to obtain regulatory approval of our SBP-101 product candidate in the United States, the European Union or other international markets;

● the cost and delays in product development that may result from changes in regulatory oversight applicable to our SBP-101 product candidate;

● the cost and delays in product development that may result from the uncertain impact of the current global pandemic;

● the market acceptance and level of future sales of our SBP-101 product candidate;

● the rate of progress in establishing reimbursement arrangements with third-party payors;

● the effect of competing technological and market developments; and

● the costs involved in filing and prosecuting patent applications and enforcing or defending patent claims.

We traditionally have used the sale of equity securities and debt to fund our ongoing business operations and short-term liquidity needs. As of September 30, 2020, we did not have any existing credit facilities under which we could borrow funds.

We expect that we will have only modest increases in expenditures in order to continue our efforts to grow our business, complete our Phase 1a clinical trial and begin the next clinical trial for our SBP-101 product candidate. We also expect to invest in additional R&D efforts on mechanism of action, biomarkers, additional indications in other cancer types and the possibility of SBP-101 to act as a sensitizing agent for certain immunotherapies. The exact amounts and timing of any expenditure may vary significantly from our current intentions. We will need to obtain additional funds to continue our operations and execute our business plans including completion of required future trials and pursuing regulatory approvals in the United States, the European Union and other international markets. While we have been successful in the past in obtaining the necessary capital to support our operations, and have similar future plans to obtain additional financing, there is no assurance that we will be able to obtain additional financing under commercially reasonable terms and conditions, or at all. This risk would increase if our clinical data is inconclusive or not positive or economic conditions worsen in the market as a whole or in the pharmaceutical or biotechnology markets individually.

If we are unable to obtain additional financing when needed, we will likely need to reduce our operations by taking actions which may include, among other things, reducing use of outside professional service providers, reducing staff size or reduce staff compensation, significantly modifying or delaying the development of our SBP-101 product candidate, licensing rights to third parties, including the right to commercialize our SBP-101 product candidate for patients with pancreatic cancer, or other applications that we would otherwise seek to pursue, or discontinuing operations entirely.

18

To the extent that we raise additional capital through the sale of equity or convertible debt securities, the interests of our current stockholders could be diluted, and the terms may include liquidation or other preferences that adversely affect the rights of our current stockholders. If we issue preferred stock, it could affect the rights of our stockholders or reduce the value of our common stock. Specific rights granted to future holders of preferred stock may include voting rights, preferences as to dividends and liquidation, conversion and redemption rights, sinking fund provisions, and restrictions on our ability to merge with or sell our assets to a third party. Debt financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures or declaring dividends. Any of these events could adversely affect our ability to achieve our regulatory approvals and commercialization goals and harm our business.

Our future success is dependent upon our ability to obtain additional financing, the success of our current Phase 1 clinical trial and required future trials, our ability to obtain marketing approval for our SBP-101 product candidate in the United States, the European Union and other international markets. If we are unable to obtain additional financing when needed, if our Phase 1 clinical trial is not successful, if we do not receive regulatory approval required for future trials or if once these studies are concluded, we do not receive marketing approval for our SBP-101 product candidate, we would not be able to continue as a going concern and would be forced to cease operations. The interim financial statements included in this report have been prepared assuming that we will continue as a going concern and do not include any adjustments relating to the recoverability or classification of assets or the amounts of liabilities that might result from the outcome of these uncertainties.

Indebtedness

As of September 30, 2020, we had indebtedness totaling $0.9 million. This includes a balance of $0.7 million due under an unsecured, non-interest-bearing promissory note. The note became payable when the Company was listed on Nasdaq on September 1, 2020 and was paid in full subsequent to the close of the quarter. We also had a balance of $39,000 due under an unsecured loan that accrues an annual interest of 4.125% which is scheduled to mature on December 31, 2020. We commenced monthly payments of principal and interest on that loan totaling $10,000 per month on May 1, 2018.

Also included in our indebtedness is a loan obtained by the Company on May 1, 2020 in the principal amount of approximately $103,000 from Bank of America pursuant to the Paycheck Protection Program (“PPP”) of the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act administered by the U.S. Small Business Administration (“SBA”). In accordance with the requirements of the CARES Act, the Company has used the proceeds of the loan exclusively for qualified expenses, including payroll costs, as further detailed in the CARES Act and applicable guidance issued by the SBA. The loan is evidenced by an unsecured promissory note and interest is scheduled to accrue on the outstanding balance at a rate of 1.0% per annum beginning on November 1, 2020. However, the Company expects to be eligible to apply for forgiveness of up to all of the principal and interest due under the loan, in an amount equal to the sum of qualified expenses under the PPP during the twenty-four weeks following disbursement. Notwithstanding the Company’s anticipated eligibility to apply for forgiveness, no assurance can be given that it will obtain forgiveness of all or any portion of the amount due under the loan. Subject to any such forgiveness granted under the PPP, the loan is scheduled to mature on May 1, 2022 and may require us to commence payments of principal and interest as soon as November 2020. The loan may be prepaid at any time prior to maturity with no prepayment penalties. The unsecured promissory note governing the loan provides for customary events of default, including, among others, those relating to failure to make payments, bankruptcy, breaches of representations, significant changes in ownership, and material adverse effects. The Company’s obligations under the note are not secured by any collateral. The Company completed the application for forgiveness in November 2020, although a decision is not expected from the SBA before December 31, 2020.

Critical Accounting Policies and Estimates

Our significant accounting policies are set forth in the notes accompanying the condensed consolidated financial statements included in this document. The accounting policies used in preparing our interim fiscal 2019 condensed consolidated financial statements are the same as those described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements.

Item 3. Quantitative and Qualitative Disclosure About Market Risk.

As a smaller reporting company, we are not required to provide disclosure pursuant to this item.

19

Item 4. Controls and Procedures.

Evaluation of Disclosure Controls and Procedures

Our management is responsible for establishing and maintaining adequate internal control over financial reporting for the Company. As of the date of this filing, management has not identified any material weaknesses, but believes that it does have a significant deficiency in that it has insufficient personnel resources within the accounting function to fully segregate the duties over financial transaction processing and reporting. Management has mitigated this deficiency primarily through greater involvement in the review and monitoring of financial transaction processing and reporting by executive and senior management.

We believe that our internal control system provides reasonable assurance to our management and Board of Directors regarding the preparation and fair presentation of published financial statements. All internal controls over financial reporting, no matter how well designed, have inherent limitations, including the possibility of human error and the circumvention or overriding of controls. Therefore, even effective internal controls over financial reporting can provide only reasonable assurance with respect to financial statement preparation and presentation. Further, because of changes in conditions, the effectiveness of internal controls over financial reporting may vary over time.

As of the end of the period covered by this quarterly report, the Company’s management conducted an evaluation, under the supervision and with the participation of our Chief Executive Officer and Chief Financial Officer, of the effectiveness of the design and operation of our disclosure controls and procedures, pursuant to Rules 13a-15 and 15d-15 of the Securities Exchange Act of 1934 (the “Exchange Act”). Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that, as of September 30, 2020, our disclosure controls and procedures were effective in ensuring that information relating to the Company required to be disclosed in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, including ensuring that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

Changes to Internal Control Over Financial Reporting

We have not identified any change in our internal control over financial reporting during our most recently completed fiscal quarter 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.

None

Item 1A. Risk Factors.

Other than noted below, there have been no material changes to the risk factors described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2019.

Our business is subject to risks arising from epidemic diseases, such as the recent outbreak of the COVID-19 illness.

The recent outbreak of COVID-19, which has been declared by the World Health Organization to be a pandemic, has spread across the globe, and is impacting worldwide economic activity. A pandemic, including COVID-19, or other public health epidemic poses the risk that we or our employees, contractors, suppliers, and other partners may be prevented from conducting business activities for an indefinite period of time, including due to the spread of the disease within these groups or due to shutdowns that may be requested or mandated by governmental authorities. While it is not possible at this time to estimate the impact that COVID-19 could have on our business, the continued spread of COVID-19 and the measures taken by the governments of countries affected could disrupt the supply chain and the manufacture or shipment of both drug substance and finished drug product for our product candidates for preclinical testing and clinical trials and adversely impact our business, financial condition or results of operations. We often attend and present clinical updates at various medical and investor conferences throughout the year. The COVID-19 outbreak has caused, and is likely to continue to cause, cancellations or reduced attendance of these conferences and we may need to seek alternate methods to present clinical updates and to engage with the medical and investment communities. The spread of COVID-19 may also slow potential enrollment of clinical trials and reduce the number of eligible patients for our clinical trials. The COVID-19 outbreak and mitigation measures may also have an adverse impact on global economic conditions which could have an adverse effect on our business and financial condition and our potential to conduct financings on terms acceptable to us, if at all. The extent to which the COVID-19 outbreak impacts our results will depend on future developments that are highly uncertain and cannot be predicted, including new information that may emerge concerning the severity of the virus and the actions to contain its impact.

On April 3, 2020, as a result of the COVID-19 pandemic, the Company announced a temporary pause in enrollment in our current clinical study. The Company reauthorized recruitment and enrollment on May 20, 2020. Enrollment resumed at all clinical sites will continue as long conditions allow. At this time continued uncertainty remains regarding possible risk to our clinical monitoring access, supply chain and limitation on the resources of our investigational sites.

20

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

On September 1, 2020, the Company issued 35,665 shares of common stock as a result of the exercise of outstanding warrants that were set to expire as a result of the public offering. All of the warrants were exercised at $1.875 per share. Of the shares issued, 27,500 were issued for approximately $52,000 cash. One warrant to purchase 15,000 shares of common stock was exercised on a net, cashless basis, resulting in the issuance of the remaining 8,165 shares. The shares were issued in reliance on an exemption from registration set forth in Section 4(a)(2) of the Securities Act of 1933, as amended (the “Securities Act”) to “accredited investors,” as defined in Rule 501 of Regulation D of the SEC, without the use of any general solicitation or advertising to market or otherwise offer the securities for sale. None of the shares issued have been registered under the Securities Act or applicable state securities laws and none may be offered or sold in the United States absent registration under the Securities Act, or an exemption from such registration requirements.

Item 3.     Defaults Upon Senior Securities.

None.

Item 4. Mine Safety Disclosures.

Not applicable.

Item 5. Other Information.

None.

21

Item 6. Exhibits.

Unless otherwise indicated, all documents incorporated into this quarterly report on Form 10-Q by reference to a document filed with the SEC pursuant to the Exchange Act are located under SEC file number 000-55242.

Exhibit No.	Description	Manner of Filing
3.1	Certificate of Incorporation, as amended through May 12, 2016 (incorporated by reference to Exhibit 3.1 to quarterly report on Form 10-Q for the quarter ended June 30, 2016)	Incorporated by Reference
3.2	Bylaws, as amended through May 12, 2016 (incorporated by reference to Exhibit 3.2 to quarterly report on Form 10-Q for the quarter ended June 30, 2016)	Incorporated by Reference
4.1	Form of Common Stock Purchase Warrant (incorporated by reference to Exhibit 4.2 Form S-1 effective August 27, 2020)	Incorporated by Reference
4.2	Form of Underwriter Common Stock Purchase Warrant (incorporated by reference to Exhibit 4.2 Form S-1 effective August 27, 2020)	Incorporated by Reference
4.5	Warrant Agency Agreement with VStock Transfer, LLC dated September 1, 2020 (incorporated by reference to Exhibit 4.1 to current report on Form 8-K filed September 1, 2020)	Incorporated by Reference
4.6	Form of Common Stock Purchase Warrant (incorporated by reference to Exhibit 4.2 to current report on Form 8-K filed September 1, 2020)	Incorporated by Reference
10.1*	Employment agreement with Jennifer K Simpson dated July 15, 2020 (incorporated by reference to Exhibit 10.1 to current report on Form 8-K filed July 16, 2020)	Incorporated by Reference
31.1	Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) or 15d-14(a) Under the Securities Exchange Act of 1934, as Amended, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed Electronically
31.2	Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) or 15d-14(a) Under the Securities Exchange Act of 1934, as Amended, as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002	Filed Electronically
32.1	Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Filed Electronically
32.2	Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350, as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002	Filed Electronically
101	Financial statements from the quarterly report on Form 10-Q of Sun BioPharma, Inc. for the quarter ended September 30, 2020, formatted in XBRL: (i) the Balance Sheets, (ii) the Statements of Operations and Comprehensive Loss, (iii) the Statements of Stockholders’ Equity (Deficit), (iv) the Statements of Cash Flows, and (v) the Notes to Financial Statements.	Filed Electronically

* Management compensatory arrangement required to be filed herewith.

22

SIGNATURES

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

	SUN BIOPHARMA, INC.
Date: November 12, 2020	/s/ Jennifer K. Simpson
	Jennifer K. Simpson President and Chief Executive Officer
	(Duly Authorized Officer)
Date: November 12, 2020	/s/ Susan Horvath
	Susan Horvath Vice President of Finance, Chief Financial Officer,
	Treasurer and Secretary
	(Principal Financial Officer and Principal Accounting Officer)

23

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a) UNDER THE SECURITIES

EXCHANGE ACT OF 1934, AS AMENDED, AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Jennifer K. Simpson, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Sun BioPharma, 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 condensed consolidated financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a.	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiary, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b.	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of condensed consolidated financial statements for external purposes in accordance with generally accepted accounting principles;
	c.	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d.	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
	a.	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	b.	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
Dated:  November 12, 2020			/s/ Jennifer K. Simpson
			Jennifer K. Simpson
			President and Chief Executive Officer
			(Principal Executive Officer)

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO RULE 13a-14(a) OR 15d-14(a) UNDER THE SECURITIES

EXCHANGE ACT OF 1934, AS AMENDED, AS ADOPTED PURSUANT TO
SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Susan Horvath, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Sun BioPharma, 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 condensed consolidated financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a.	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiary, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b.	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of condensed consolidated financial statements for external purposes in accordance with generally accepted accounting principles;
	c.	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d.	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
	a.	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	b.	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
Dated: November 12, 2020			/s/ Susan Horvath
			Susan Horvath
			Vice President of Finance, Chief Financial Officer, Treasurer and Secretary
			Treasurer and Secretary
			(Principal Financial Officer and Principal Accounting Officer)

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Jennifer K. Simpson, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	the Quarterly Report on Form 10-Q of Sun BioPharma, Inc. for the quarter ended September 30, 2020 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Sun BioPharma, Inc.

Dated: November 12, 2020

/s/ Jennifer K. Simpson

Jennifer K. Simpson

President and Chief Executive Officer

(Principal Executive Officer)

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Susan Horvath, hereby certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	the Quarterly Report on Form 10-Q of Sun BioPharma, Inc. for the quarter ended September 30, 2020 (the “Report”) fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and
(2)	the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Sun BioPharma, Inc.

Dated: November 12, 2020

/s/ Susan Horvath

Susan Horvath

Vice President of Finance, Chief Financial Officer,

Treasurer and Secretary

(Principal Financial Officer and Principal

Accounting Officer)

XML

Document And Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 11, 2020
Document Information [Line Items]
Entity Registrant Name	Sun BioPharma, Inc.
Entity Central Index Key	0001029125
Trading Symbol	snbp
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Current Reporting Status	Yes
Entity Emerging Growth Company	false
Entity Small Business	true
Entity Interactive Data Current	Yes
Entity Common Stock, Shares Outstanding (in shares)		9,649,427
Entity Shell Company	false
Document Type	10-Q
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
Title of 12(b) Security	Common Stock, $0.001 par value

XML

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash	$ 10,870	$ 2,449
Prepaid expenses and other current assets	335	283
Income tax receivable	228	361
Total current assets	11,433	3,093
Other noncurrent assets	52	51
Total assets	11,485	3,144
Current liabilities:
Accounts payable	422	597
Accrued expenses	632	304
Term debt	37	116
Payroll protection plan loan	103
Unsecured promissory note payable	742	742
Total current liabilities	1,936	1,759
Stockholders' equity:
Preferred stock, $0.001 par value; 10,000,000 authorized; no shares issued or outstanding as of September 30, 2020 and December 31 2019	0	0
Common stock, $0.001 par value; 100,000,000 authorized; 9,649,427 and 6,631,308 shares issued and outstanding as of September 30, 2020 and December 31, 2019 respectively	10	7
Additional paid-in capital	54,544	42,331
Accumulated deficit	(45,146)	(41,258)
Accumulated comprehensive income	141	305
Total stockholders' equity	9,549	1,385
Total liabilities and stockholders' equity	$ 11,485	$ 3,144

XML

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	9,649,427	6,631,308
Common stock, shares outstanding (in shares)	9,649,427	6,631,308

XML

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating expenses:
General and administrative	$ 1,223	$ 622	$ 2,348	$ 1,505
Research and development	773	720	1,805	1,578
Operating loss	(1,996)	(1,342)	(4,153)	(3,083)
Other (expense) income:
Interest expense	(3)	(3)	(12)	(2,187)
Other income (expense)	239	(219)	55	(287)
Total other income (expense)	236	(222)	43	(2,474)
Loss before income tax benefit	(1,760)	(1,564)	(4,110)	(5,557)
Income tax benefit	89	190	222	331
Net loss	(1,671)	(1,374)	(3,888)	(5,226)
Foreign currency translation adjustment	(246)	202	(164)	219
Comprehensive loss	$ (1,917)	$ (1,172)	$ (4,052)	$ (5,007)
Basic and diluted net loss per share (in dollars per share)	$ (0.21)	$ (0.23)	$ (0.55)	$ (0.97)
Weighted average shares outstanding - basic and diluted (in shares)	7,888,609	6,009,904	7,085,326	5,385,986

XML

Condensed Consolidated Statements of Stockholders' Equity (Deficit) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balances (in shares) at Dec. 31, 2018	5,077
Balances at Dec. 31, 2018	$ 5	$ 35,038	$ (35,058)	$ 283	$ 268
Warrants issued		419			419
Stock-based compensation		10			10
Net loss			(1,581)		(1,581)
Foreign currency translation adjustment				(32)	(32)
Beneficial conversion feature on convertible notes payable		353			353
Common stock converted into convertible notes payable (in shares)	(7)
Common stock converted into convertible notes payable		(25)			(25)
Balances (in shares) at Mar. 31, 2019	5,070
Balances at Mar. 31, 2019	$ 5	35,795	(36,639)	251	(588)
Balances (in shares) at Dec. 31, 2018	5,077
Balances at Dec. 31, 2018	$ 5	35,038	(35,058)	283	268
Net loss					(5,226)
Foreign currency translation adjustment					219
Cashless exercise of warrants
Common stock converted into convertible notes payable					(25)
Balances (in shares) at Sep. 30, 2019	6,624
Balances at Sep. 30, 2019	$ 7	42,164	(40,284)	502	2,389
Balances (in shares) at Mar. 31, 2019	5,070
Balances at Mar. 31, 2019	$ 5	35,795	(36,639)	251	(588)
Stock-based compensation		412			412
Net loss			(2,271)		(2,271)
Foreign currency translation adjustment				49	49
Conversion of convertible notes payable and accrued interest (in shares)	652
Conversion of convertible notes payable and accrued interest	$ 1	2,280			2,281
Balances (in shares) at Jun. 30, 2019	5,722
Balances at Jun. 30, 2019	$ 6	38,487	(38,910)	300	(117)
Stock-based compensation		536			536
Net loss			(1,374)		(1,374)
Foreign currency translation adjustment				202	202
Sale of common stock and warrants (in shares)	902
Sale of common stock and warrants	$ 1	3,141			3,142
Balances (in shares) at Sep. 30, 2019	6,624
Balances at Sep. 30, 2019	$ 7	42,164	(40,284)	502	2,389
Balances (in shares) at Dec. 31, 2019	6,631
Balances at Dec. 31, 2019	$ 7	42,331	(41,258)	305	1,385
Warrants issued		228			228
Stock-based compensation		112			112
Net loss			(1,798)		(1,798)
Foreign currency translation adjustment				797	797
Balances (in shares) at Mar. 31, 2020	6,631
Balances at Mar. 31, 2020	$ 7	42,671	(43,056)	1,102	724
Balances (in shares) at Dec. 31, 2019	6,631
Balances at Dec. 31, 2019	$ 7	42,331	(41,258)	305	1,385
Net loss					(3,888)
Foreign currency translation adjustment					(164)
Cashless exercise of warrants					8
Common stock converted into convertible notes payable
Balances (in shares) at Sep. 30, 2020	9,649
Balances at Sep. 30, 2020	$ 10	54,544	(45,146)	141	9,549
Balances (in shares) at Mar. 31, 2020	6,631
Balances at Mar. 31, 2020	$ 7	42,671	(43,056)	1,102	724
Stock-based compensation		264			264
Net loss			(419)		(419)
Foreign currency translation adjustment				(715)	(715)
Sale of common stock and warrants (in shares)	437
Sale of common stock and warrants		1,746			1,746
Balances (in shares) at Jun. 30, 2020	7,068
Balances at Jun. 30, 2020	$ 7	44,681	(43,475)	387	1,600
Stock-based compensation		593			593
Net loss			(1,671)		(1,671)
Foreign currency translation adjustment				(246)	(246)
Sale of common stock and warrants (in shares)	2,545
Sale of common stock and warrants	$ 3	9,218			9,221
Exercise of warrants for cash (in shares)	28
Exercise of warrants for cash		52			52
Exercise of warrants, cashless (in shares)	8
Cashless exercise of warrants
Balances (in shares) at Sep. 30, 2020	9,649
Balances at Sep. 30, 2020	$ 10	$ 54,544	$ (45,146)	$ 141	$ 9,549

XML

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended				9 Months Ended		117 Months Ended
	Sep. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020
Cash flows from operating activities:
Net loss	$ (1,671,000)	$ (1,798,000)	$ (1,374,000)	$ (1,581,000)	$ (3,888,000)	$ (5,226,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation					969,000	958,000
Amortization of debt discount						2,061,000
Amortization of debt issuance costs						12,000
Non-cash interest expense						102,000
Changes in operating assets and liabilities:
Income tax receivable					133,000	44,000
Prepaid expenses and other current assets					64,000	(12,000)
Accounts payable					(347,000)	179,000
Accrued liabilities					328,000	15,000
Net cash used in operating activities					(2,741,000)	(1,867,000)
Cash flows from financing activities:
Proceeds from sale of common stock and warrants net of offering costs of $2					1,746,000	3,142,000	$ (45,100,000)
Proceeds from public offering of common stock and warrants net of underwriters discount and offering costs of $1,165					9,335,000
Proceeds from the sale of convertible promissory notes, net of debt issuance costs of $7						810,000
Proceeds from exercise of warrants					52,000
Proceeds from payroll protection loan					103,000
Repayment of demand note						(25,000)
Repayments of term debt					(81,000)	(82,000)
Net cash provided by financing activities					11,155,000	3,845,000
Effect of exchange rate changes on cash					7,000	(6,000)
Net change in cash					8,421,000	1,972,000
Cash at beginning of period		$ 2,449,000		1,405,000	2,449,000	1,405,000
Cash at end of period	10,870,000		$ 3,377,000		10,870,000	3,377,000	$ 10,870,000
Supplemental disclosure of cash flow information:
Cash paid during period for interest					5,000	11,000
Supplemental disclosure of non-cash transactions:
Warrants issued for future services					228,000
Warrants issued to underwriter					353,000
Cashless exercise of warrants					8,000
Amortization of warrants as offering costs					114,000
Beneficial conversion feature on convertible notes						353,000
Warrants issued with convertible notes						419,000
Common stock converted into convertible notes payable				$ 25,000		25,000
Conversion of convertible notes payable and accrued interest into common stock						2,281,000
Issuance of unsecured promissory note in exchange of vendor accounts payable						$ 742,000

XML

Condensed Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Proceeds from the sale of convertible promissory notes, offering costs		$ 7
Private Placement [Member]
Proceeds from issuance of common stock and warrants, issuance costs	$ 2	$ 2
Underwritten Public Offering [Member]
Proceeds from issuance of common stock and warrants, issuance costs	$ 1,165

XML

Note 1 - Business

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]

1.

     Business

Sun BioPharma, Inc. and its wholly-owned subsidiary, Sun BioPharma Australia Pty Ltd. (collectively “we,” “us,” “our,” and the “Company”), exist for the primary purpose of advancing the commercial development of a proprietary polyamine analogue for the treatment of patients with pancreatic cancer. We have exclusively licensed the worldwide rights to this compound, which has been designated as SBP-

101,

from the University of Florida Research Foundation, Inc. (“UFRF”).

XML

Note 2 - Risks and Uncertainties

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Nature of Operations [Text Block]

2.

     Risks and Uncertainties

The Company operates in a highly regulated and competitive environment. The development, manufacturing and marketing of pharmaceutical products require approval from, and are subject to ongoing oversight by, the Food and Drug Administration (“FDA”) in the United States, the Therapeutic Goods Administration in Australia, the European Medicines Agency in the European Union, and comparable agencies in other countries. Obtaining approval for a new pharmaceutical product is never certain,

may

take many years, and is normally expected to involve substantial expenditures.

We have incurred losses of

$45.1

million since our inception in

2011.

For the

nine

months ended

September 30, 2020,

we incurred a net loss of

$3.9

million. We also incurred negative cash flows from operating activities of

$2.7

 million for this period. As we continue to pursue development activities and seek commercialization of our initial product candidate, SBP-

101,

we expect to incur substantial losses, which are likely to generate negative net cash flows from operating activities. As of

September 30, 2020,

we had cash of

$10.9

million, working capital of

$9.5

million, (current assets less current liabilities) and stockholders' equity of

$9.5

million. On

September 1, 2020,

the Company completed an underwritten public offering of common stock resulting in net proceeds, after deducting the underwriting discount and other offering expense, of

$9.3

million and the listing of our common stock on the Nasdaq Capital Market tier of The Nasdaq Stock Market LLC (“Nasdaq”). Prior to the public offering the Company's principal sources of cash consisted of issuances of debt and equity securities through private placements. As a result of the Company's listing on Nasdaq an unsecured promissory note in the amount of

$742,000

became payable. The Company used a portion of the net proceeds of the underwritten offering to pay this balance in full early in the

fourth

quarter.

The accompanying condensed consolidated financial statements have been prepared assuming that we will continue as a going concern, which contemplates the realization of assets and liquidation of liabilities in the normal course of business. The condensedconsolidated financial statements do

not

include any adjustments relating to the recoverability or classification of assets or the amounts of liabilities that might result from the outcome of these uncertainties. Our current independent registered public accounting firm included a paragraph emphasizing this going concern uncertainty in their audit report regarding our

2019

financial statements dated

March 24, 2020.

Our ability to continue as a going concern, realize the carrying value of our assets and discharge our liabilities in the ordinary course of business is dependent upon a number of factors, including our ability to obtain additional financing, the success of our development efforts, our ability to obtain marketing approval for our SBP-

101

product candidate in the United States, Australia, the European Union or other markets and ultimately our ability to market and sell our SBP-

101

product candidate. These factors, among others, raised substantial doubt about our ability to continue operations as a going concern. See Note

4

titled “Liquidity and Business Plan.”

In

March 2020,

the World Health Organization declared the spread of a novel strain of coronavirus (“COVID-

19”

) a global pandemic. Actions have been taken by federal, state and local governmental authorities to combat the spread of COVID-

19,

including through issuances of “stay-at-home” directives and similar mandates for many individuals to substantially restrict daily activities and for many businesses to curtail or cease normal operations. These measures, while intended to protect human life, have led to significantly reduced economic activity. While many state and local authorities have started to reopen businesses, others have adopted additional measures to mitigate COVID-

19

and the rapid development and uncertainty of the situation continues to preclude any prediction as to the ultimate impact COVID-

19

will have on the Company's business, financial condition, results of operation and cash flows, which will depend largely on future developments directly or indirectly relating to the duration and scope of the COVID-

19

outbreak in the United States and Australia. On

April 3, 2020,

we initiated a temporary pause in the enrollment of new patients in our ongoing clinical trial. On

May 20, 2020,

we reauthorized our clinical sites to resume recruitment and enrollment of patients in our clinical trial. We continued to treat patients already enrolled throughout the temporary pause in enrollment. New enrollments have

not

been interrupted again since the temporary pause was lifted in

May

of

2020.

XML

Note 3 - Basis of Presentation

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Basis of Presentation and Significant Accounting Policies [Text Block]

3.

     Basis of Presentation

We have prepared the accompanying interim condensed consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information and with the instructions to Form 

10

-Q and Regulation S-

X

of the Securities and Exchange Commission (“SEC”). Accordingly, they do

not

include all of the information and footnotes required by U.S. GAAP for complete financial statements. These interim condensed consolidated financial statements reflect all adjustments consisting of normal recurring accruals, which, in the opinion of management, are necessary to present fairly our consolidated financial position, consolidated results of operations and consolidated cash flows for the periods and as of the dates presented. Our fiscal year ends on

December 31.

The condensed consolidated balance sheet as of

December 31, 2019

was derived from audited consolidated financial statements but does

not

include all disclosures required by U.S. GAAP. These interim condensed consolidated financial statements should be read in conjunction with the annual consolidated financial statements and the notes thereto included in our most recent filed Annual Report on Form

10

-K and our subsequent filings with the SEC. The nature of our business is such that the results of any interim period

may

not

be indicative of the results to be expected for the entire year.

XML

Note 4 - Liquidity and Business Plan

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Substantial Doubt about Going Concern [Text Block]

4.

     Liquidity and

Business

Plan

On

September 1, 2020,

the Company consummated an underwritten public offering of

2,545,454

shares of common stock and warrants to purchase the same number of shares of common stock which resulted in net proceeds of approximately

$9.3

million. In the quarter ended

June 30, 2020,

the Company sold common stock and warrants to purchase common stock in private placements to certain accredited investors resulting in net proceeds of approximately

$1.7

million. We expect the proceeds of these offerings will be sufficient to fund our planned business operations into the

first

half of

2022.

We will need to raise additional capital in the future to support our operations.

Our future success is dependent upon our ability to obtain additional financing, the success of our development efforts, our ability to obtain marketing approval for our SBP-

101

product candidate in the United States or other markets and ultimately our ability to market and sell our SBP-

101

product candidate. If we are unable to obtain additional financing when needed, if our clinical trials are

not

successful or if we are unable to obtain marketing approval, we would

not

be able to continue as a going concern and would be forced to cease operations and liquidate our company.

There can be

no

assurances that we will be able to obtain additional financing on commercially reasonable terms, or at all. The sale of additional convertible debt or equity securities would likely result in dilution to our current stockholders.

XML

Note 5 - Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Significant Accounting Policies [Text Block]

5.

     Summary of Significant Accounting Policies

Principles of consolidation

The accompanying condensed consolidated financial statements include the assets, liabilities, and expenses of the Company. All significant intercompany transactions and balances have been eliminated in consolidation.

Use of estimates

The preparation of condensed consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amount of expenses during the reporting period. Actual results could differ from those estimates.

Research and development costs

Research and development costs include expenses incurred in the conduct of our

second

Phase

1

human clinical trial, for

third

-party service providers performing various testing and accumulating data related to our preclinical studies; sponsored research agreements; developing and scaling the manufacturing process necessary to produce sufficient amounts of the SBP-

101

compound for use in our pre-clinical studies and human clinical trials; consulting resources with specialized expertise related to execution of our development plan for our SBP-

101

product candidate; personnel costs, including salaries, benefits and share-based compensation; and costs to license and maintain our licensed intellectual property.

We charge research and development costs, including clinical trial costs, to expense when incurred. Our human clinical trials are, and will be, performed at clinical trial sites and are administered jointly by us with assistance from contract research organizations (“CROs”). Costs of setting up clinical trial sites are accrued upon execution of the study agreement. Expenses related to the performance of clinical trials generally are accrued based on contracted amounts and the achievement of agreed upon milestones, such as patient enrollment, patient follow-up, etc. We monitor levels of performance under each significant contract, including the extent of patient enrollment and other activities through communications with the clinical trial sites and CROs, and adjust the estimates, if required, on a quarterly basis so that clinical expenses reflect the actual effort expended at each clinical trial site and by each CRO.

All material CRO contracts are terminable by us upon written notice and we are generally only liable for actual effort expended by the CROs and certain non-cancelable expenses incurred at any point of termination.

We expense costs associated with obtaining licenses for patented technologies when it is determined there is

no

alternative future use of the intellectual property subject to the license.

Stock

-based compensation

In accounting for stock-based incentive awards, we measure and recognize the cost of employee and non-employee services received in exchange for awards of equity instruments based on the fair value of those awards on the grant date. Calculating stock-based compensation expense requires the input of highly subjective assumptions, which represent our best estimates and involve inherent uncertainties and the application of management's judgment. Compensation cost is recognized ratably using the straight-line attribution method over the vesting period, which is considered to be the requisite service period. Compensation expense for performance-based stock option awards is recognized when “performance” has occurred or is probable of occurring.

The fair value of stock-based awards is estimated at the date of grant using the Black-Scholes option pricing model. The determination of the fair value of stock-based awards is affected by our stock price, as well as assumptions regarding a number of complex and subjective variables. Risk free interest rates are based upon U.S. Treasury rates appropriate for the expected term of each award. Expected volatility rates are based primarily on the volatility rates of a set of guideline companies, which consist of public and recently public biotechnology companies. The assumed dividend yield is zero, as we do

not

expect to declare any dividends in the foreseeable future. The expected term of options granted is determined using the “simplified” method. Under this approach, the expected term is presumed to be the mid-point between the average vesting date and the end of the contractual term.

Foreign currency translation adjustments

The functional currency of Sun BioPharma Australia Pty Ltd is the Australian Dollar. Accordingly, assets and liabilities, and equity transactions of Sun BioPharma Australia Pty Ltd are translated into U.S. dollars at period-end exchange rates. Revenues and expenses are translated at the average exchange rate in effect for the period. The resulting translation gains and losses are recorded as a component of accumulated comprehensive loss presented within the stockholders' equity (deficit). During the

nine

-month periods ended

September 30, 2020

and

2019,

any reclassification adjustments from accumulated other comprehensive loss to operations were inconsequential.

Comprehensive loss

Comprehensive loss consists of our net loss and the effects of foreign currency translation.

Net loss per share

Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is based on the weighted average of common shares outstanding during the period plus dilutive potential common shares calculated using the treasury stock method. Such potentially dilutive shares are excluded when the effect would be anti-dilutive or reduce a net loss per share. The Company's potential dilutive shares, which include outstanding common stock options and warrants, have

not

been included in the computation of diluted net loss per share for all periods as the result would be anti-dilutive.

The following table sets forth the potential shares of common stock that were

not

included in the calculation of diluted net loss per share as their effects would have been anti-dilutive as of:

		September 30,
	2020		2019
Employee and non-employee stock options		2,170,459		1,711,511
Common stock issuable under common stock purchase warrants		6,571,468		3,417,099
		8,741,927		5,128,610

XML

Note 6 - Indebtedness

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Debt Disclosure [Text Block]

6.

     

Indebtedness

Term debt

The terms of our unsecured loan (the “Term Debt”) payable to the Institute for Commercialization of Public Research, Inc. (the “Institute”) which was amended in

December

of

2019

to extend the maturity date from

December 31, 2019

to

December 31, 2020,

remain unchanged as of

September 30, 2020.

The fair market value of the warrants issued in

2019

in exchange for modification of the terms is being amortized to interest expense over the remaining term of the loan. The amendment requires the continuation of monthly payments of principal and interest totaling

$10,000.

The unpaid principal balance on

September 30, 2020

was

$39,000.

PPP

l

oan

On

May 1, 2020,

the Company obtained a loan in the principal amount of approximately

$103,000

from Bank of America pursuant to the Paycheck Protection Program (“PPP”) of the Coronavirus Aid, Relief, and Economic Security (“CARES”) Act administered by the U.S. Small Business Administration (“SBA”). In accordance with the requirements of the CARES Act, the Company has used the proceeds of the loan exclusively for qualified expenses, including payroll costs, as further detailed in the CARES Act and applicable guidance issued by the SBA. The loan is evidenced by an unsecured promissory note and interest is scheduled to accrue on the outstanding balance at a rate of

1.0%

per annum beginning on

November 1, 2020.

However, the Company expects to be eligible to apply for forgiveness of up to all of the principal and interest due under the loan, in an amount equal to the sum of qualified expenses under the PPP during the

twenty-four

weeks following disbursement. Notwithstanding the Company's anticipated eligibility to apply for forgiveness,

no

assurance can be given that it will obtain forgiveness of all or any portion of the amount due under the loan. Subject to any such forgiveness granted under the PPP, the loan is scheduled to mature on

May 1, 2022

and

may

require us to commence payments of principal and interest as soon as

November 2020.

The loan

may

be prepaid at any time prior to maturity with

no

prepayment penalties. The unsecured promissory note governing the loan provides for customary events of default, including, among others, those relating to failure to make payments, bankruptcy, breaches of representations, significant changes in ownership, and material adverse effects. The Company's obligations under the note are

not

secured by any collateral. The Company completed the application for forgiveness in

November 2020,

although a decision is

not

expected from the SBA before

December 31, 2020.

Other indebtedness

On

May 17, 2019,

the Company executed an unsecured promissory note with a vendor that relieved the Company's immediate obligation to pay the outstanding vendor invoices. The outstanding vendor invoices totaling approximately

$742,000

were removed from the Company's accounts payable as consideration for the promissory note. The promissory note was unsecured, did

not

bear interest and the balance became payable in full on

September 1, 2020

as a result of the Company's stock being listed on the Nasdaq securities exchange. On

October 6, 2020,

the Company paid the balance in full.

XML

Note 7 - Stockholders' Equity

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Stockholders' Equity Note Disclosure [Text Block]

7

.     

S

tock

holders'

Equity

Public

o

ffering

of common stock and warrants

On

September 1, 2020,

the Company closed an underwritten public offering of

2,545,454

shares of its common stock and warrants to purchase an aggregate of up to the same number of additional shares of common stock. The warrants are exercisable for a period of

five

years from the date of issuance at an initial exercise price of

$4.54.

The gross proceeds from the offering was approximately

$10.5

million. The net proceeds, after deducting the underwriters discount and other offering costs was approximately

$9.3

million. The securities were offered pursuant to a registration statement on Form S-

1

(File

No.

333

-

239661

). In connection with this offering, the Company's common stock was approved for listing and began trading on Nasdaq on

August 28, 2020.

See also Note

4,

titled “Liquidity and Business Plan.”

Underwriter common stock

On

September 1, 2020,

the Company issued to the underwriter in the public offering a

five

-year warrant to purchase

127,273

shares of common stock at an exercise price of

$4.538.

The fair market value of the warrant, totaling approximately

$353,000,

has been charged against the net proceeds of the sale of the common stock on that date.

Exercise of Warrants to purchase common stock

On

September 1, 2020,

the Company issued

35,665

shares of common stock as a result of the exercise of outstanding warrants that were set to expire as a result of the public offering. All of the warrants were exercised at

$1.875

per share. Of the shares issued,

27,500

were issued for approximately

$52,000

cash. One warrant to purchase

15,000

shares of common stock was exercised on a net, cashless basis, resulting in the issuance of the remaining

8,165

shares.

Private

p

lacement

s of

c

ommon

s

tock and

w

arrants

During the

nine

months ended

September

30,2020,

the Company issued an aggregate of

437,000

shares of common stock and warrants to purchase an aggregate of up to the same number of additional shares of common stock pursuant to securities purchase agreements. The warrants are exercisable for a period of

five

years from the date of issuance at an initial exercise price of

$6.00.

See Note

4,

titled “Liquidity and Business Plan.”

Warrants to purchase common stock issued for future services

On

February 21, 2020,

the Company issued to a service provider a

five

-year warrant to purchase

75,000

shares of common stock at an exercise price of

$6.49

per share. The fair market value of the warrant in the amount of approximately

$228,000

was capitalized and will be charged against future proceeds. On

September 1, 2020,

one

half of the capitalized amount was charged against additional paid in capital to recognize the partial completion of the services retained.

Shares

of common stock reserved for future issuance were as follows as of

September

30

,

20

20

:

Stock options outstanding	2,170,459
Shares available for grant under equity incentive plan	893,901
Common shares issuable under outstanding common stock purchase warrants	6,571,468
	9,635,828

XML

Note 8 - Stock-based Compensation

9 Months Ended

Sep. 30, 2020

Notes to Financial Statements

Share-based Payment Arrangement [Text Block]

8

.

S

tock

-based

Compensation

2016

Omnibus Incentive Plan

The Sun BioPharma, Inc.

2016

Omnibus Incentive Plan, as last amended effective

April 9, 2020 (

the

“2016

Plan”), has been approved by our Board of Directors and ratified by our stockholders. The

2016

Plan permits the granting of incentive and non-statutory stock options, restricted stock, stock appreciation rights, performance units, performance shares and other stock awards to eligible employees, directors and consultants. We grant options to purchase shares of common stock under the

2016

Plan with an exercise price

not

less than the fair market value of the underlying common stock as of the date of grant. Options granted under the

2016

Plan have a maximum term of

ten

years. Under the

2016

Plan, a total of

2,800,000

 shares of common stock have been reserved for issuance. As of

September 30, 2020,

options to purchase

1,906,099

shares of common stock were outstanding under the

2016

Plan and

893,901

shares remained available for future awards.

2011

Stock Option Plan

Our Board of Directors ceased making awards under the Sun BioPharma, Inc.

2011

Stock Option Plan (the

“2011

Plan”) upon the receipt of stockholder approval for the

2016

Plan. Awards outstanding under the

2011

Plan remain outstanding in accordance with and pursuant to the terms thereof. Options granted under the

2011

Plan have a maximum term of

ten

years and generally vest over

zero

to

two

years for employees. As of

September 30, 2020,

options to purchase

264,360

shares of common stock remained outstanding under the

2011

Plan.

Stock

-based Compensation

Expense

General and administrative (“G&A”) and research and development (“R&D”) expenses include non-cash stock-based compensation expense as a result of our issuance of stock options. The terms and vesting schedules for stock-based awards vary by type of grant and the employment status of the grantee. The awards granted through

September 30, 2020

vest based upon time-based and performance conditions. There was approximately

$1.7

million unamortized stock-based compensation expense related to options granted to employees as of

September 30, 2020.

Stock-based compensation expense for each of the periods presented is as follows (in thousands):

	Nine Months Ended September 30,
	2020		2019
General and administrative	$	860	$	573
Research and development		109		385
	$	969	$	958

Details of options granted, exercised, cancelled or forfeited during the

nine

months ended

September 30, 2020

follows:

	Shares Available for Grant			Shares Underlying Options		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value
Balance at January 1, 2020		19,549			1,744,811	$	6.53	$	1,047,197
Additional shares available to grant		1,300,000			-		-
Granted		(425,648	)		425,648		7.48
Exercised		-			-		-
Cancelled		-			-		-
Forfeitures		-			-		-
Balance at September 30, 2020		893,901			2,170,459	$	6.71	$	96,122

Information about stock options outstanding, vested and expected to vest as of

September 30, 2020,

is as follows:

			Outstanding, Vested and Expected to Vest						Options Vested and Exercisable
Per Share Exercise Price			Shares		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Options Exercisable		Weighted Average Remaining Contractual Life (Years)
$0.875	-	$1.10		26,360		2.25	$	1.03		26,360		2.25
$2.275	-	$2.50		38,000		3.37	$	2.46		38,000		3.37
$2.95	-	$3.70		774,100		7.57	$	3.04		605,950		7.26
$4.50	-	$8.10		751,900		7.94	$	6.24		563,500		7.39
$9.99	-	$10.10		266,048		9.18	$	9.99		107,012		8.28
$15.10				314,051		5.65	$	15.10		310,551		5.70
Totals				2,170,459		7.48	$	6.36		1,651,373		7.07

Key assumptions

The estimated grant-date fair values of the stock options were calculated using the Black-Scholes valuation model, based on the following assumptions for the

nine

months ended

September 30, 2020:

	2020
Common stock fair value		$4.82	-	$9.99
Risk-free interest rate		0.29%	-	0.39%
Expected dividend yield			0
Expected Option life (years)		5.00	-	5.75
Expected stock price volatility			90%

XML

Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2020

Accounting Policies [Abstract]

Consolidation, Policy [Policy Text Block]

Principles of consolidation

The accompanying condensed consolidated financial statements include the assets, liabilities, and expenses of the Company. All significant intercompany transactions and balances have been eliminated in consolidation.

Use of Estimates, Policy [Policy Text Block]

Use of estimates

The preparation of condensed consolidated financial statements requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amount of expenses during the reporting period. Actual results could differ from those estimates.

Research and Development Expense, Policy [Policy Text Block]

Research and development costs

Research and development costs include expenses incurred in the conduct of our

second

Phase

1

human clinical trial, for

third

-party service providers performing various testing and accumulating data related to our preclinical studies; sponsored research agreements; developing and scaling the manufacturing process necessary to produce sufficient amounts of the SBP-

101

compound for use in our pre-clinical studies and human clinical trials; consulting resources with specialized expertise related to execution of our development plan for our SBP-

101

product candidate; personnel costs, including salaries, benefits and share-based compensation; and costs to license and maintain our licensed intellectual property.

We charge research and development costs, including clinical trial costs, to expense when incurred. Our human clinical trials are, and will be, performed at clinical trial sites and are administered jointly by us with assistance from contract research organizations (“CROs”). Costs of setting up clinical trial sites are accrued upon execution of the study agreement. Expenses related to the performance of clinical trials generally are accrued based on contracted amounts and the achievement of agreed upon milestones, such as patient enrollment, patient follow-up, etc. We monitor levels of performance under each significant contract, including the extent of patient enrollment and other activities through communications with the clinical trial sites and CROs, and adjust the estimates, if required, on a quarterly basis so that clinical expenses reflect the actual effort expended at each clinical trial site and by each CRO.

All material CRO contracts are terminable by us upon written notice and we are generally only liable for actual effort expended by the CROs and certain non-cancelable expenses incurred at any point of termination.

We expense costs associated with obtaining licenses for patented technologies when it is determined there is

no

alternative future use of the intellectual property subject to the license.

Share-based Payment Arrangement [Policy Text Block]

Stock

-based compensation

In accounting for stock-based incentive awards, we measure and recognize the cost of employee and non-employee services received in exchange for awards of equity instruments based on the fair value of those awards on the grant date. Calculating stock-based compensation expense requires the input of highly subjective assumptions, which represent our best estimates and involve inherent uncertainties and the application of management's judgment. Compensation cost is recognized ratably using the straight-line attribution method over the vesting period, which is considered to be the requisite service period. Compensation expense for performance-based stock option awards is recognized when “performance” has occurred or is probable of occurring.

The fair value of stock-based awards is estimated at the date of grant using the Black-Scholes option pricing model. The determination of the fair value of stock-based awards is affected by our stock price, as well as assumptions regarding a number of complex and subjective variables. Risk free interest rates are based upon U.S. Treasury rates appropriate for the expected term of each award. Expected volatility rates are based primarily on the volatility rates of a set of guideline companies, which consist of public and recently public biotechnology companies. The assumed dividend yield is zero, as we do

not

expect to declare any dividends in the foreseeable future. The expected term of options granted is determined using the “simplified” method. Under this approach, the expected term is presumed to be the mid-point between the average vesting date and the end of the contractual term.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign currency translation adjustments

The functional currency of Sun BioPharma Australia Pty Ltd is the Australian Dollar. Accordingly, assets and liabilities, and equity transactions of Sun BioPharma Australia Pty Ltd are translated into U.S. dollars at period-end exchange rates. Revenues and expenses are translated at the average exchange rate in effect for the period. The resulting translation gains and losses are recorded as a component of accumulated comprehensive loss presented within the stockholders' equity (deficit). During the

nine

-month periods ended

September 30, 2020

and

2019,

any reclassification adjustments from accumulated other comprehensive loss to operations were inconsequential.

Comprehensive Income, Policy [Policy Text Block]

Comprehensive loss

Comprehensive loss consists of our net loss and the effects of foreign currency translation.

Earnings Per Share, Policy [Policy Text Block]

Net loss per share

Basic net loss per share is computed by dividing net loss by the weighted-average number of common shares outstanding during the period. Diluted net loss per share is based on the weighted average of common shares outstanding during the period plus dilutive potential common shares calculated using the treasury stock method. Such potentially dilutive shares are excluded when the effect would be anti-dilutive or reduce a net loss per share. The Company's potential dilutive shares, which include outstanding common stock options and warrants, have

not

been included in the computation of diluted net loss per share for all periods as the result would be anti-dilutive.

The following table sets forth the potential shares of common stock that were

not

included in the calculation of diluted net loss per share as their effects would have been anti-dilutive as of:

		September 30,
	2020		2019
Employee and non-employee stock options		2,170,459		1,711,511
Common stock issuable under common stock purchase warrants		6,571,468		3,417,099
		8,741,927		5,128,610

XML

Note 5 - Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

		September 30,
	2020		2019
Employee and non-employee stock options		2,170,459		1,711,511
Common stock issuable under common stock purchase warrants		6,571,468		3,417,099
		8,741,927		5,128,610

XML

Note 7 - Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Common Stock Reserved for Future Issuance [Table Text Block]

Stock options outstanding	2,170,459
Shares available for grant under equity incentive plan	893,901
Common shares issuable under outstanding common stock purchase warrants	6,571,468
	9,635,828

XML

Note 8 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Nine Months Ended September 30,
	2020		2019
General and administrative	$	860	$	573
Research and development		109		385
	$	969	$	958

Share-based Payment Arrangement, Option, Activity [Table Text Block]

	Shares Available for Grant			Shares Underlying Options		Weighted Average Exercise Price Per Share		Aggregate Intrinsic Value
Balance at January 1, 2020		19,549			1,744,811	$	6.53	$	1,047,197
Additional shares available to grant		1,300,000			-		-
Granted		(425,648	)		425,648		7.48
Exercised		-			-		-
Cancelled		-			-		-
Forfeitures		-			-		-
Balance at September 30, 2020		893,901			2,170,459	$	6.71	$	96,122

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

			Outstanding, Vested and Expected to Vest						Options Vested and Exercisable
Per Share Exercise Price			Shares		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Options Exercisable		Weighted Average Remaining Contractual Life (Years)
$0.875	-	$1.10		26,360		2.25	$	1.03		26,360		2.25
$2.275	-	$2.50		38,000		3.37	$	2.46		38,000		3.37
$2.95	-	$3.70		774,100		7.57	$	3.04		605,950		7.26
$4.50	-	$8.10		751,900		7.94	$	6.24		563,500		7.39
$9.99	-	$10.10		266,048		9.18	$	9.99		107,012		8.28
$15.10				314,051		5.65	$	15.10		310,551		5.70
Totals				2,170,459		7.48	$	6.36		1,651,373		7.07

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2020
Common stock fair value		$4.82	-	$9.99
Risk-free interest rate		0.29%	-	0.39%
Expected dividend yield			0
Expected Option life (years)		5.00	-	5.75
Expected stock price volatility			90%

XML

Note 2 - Risks and Uncertainties (Details Textual) - USD ($)		3 Months Ended							9 Months Ended		117 Months Ended
	Sep. 01, 2020	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Dec. 31, 2019	Dec. 31, 2018
Proceeds from Issuance of Private Placement									$ 1,746,000	$ 3,142,000	$ (45,100,000)
Net Income (Loss) Attributable to Parent, Total			$ (1,671,000)	$ (419,000)	$ (1,798,000)	$ (1,374,000)	$ (2,271,000)	$ (1,581,000)	(3,888,000)	(5,226,000)
Net Cash Provided by (Used in) Operating Activities, Total									(2,741,000)	(1,867,000)
Cash and Cash Equivalents, at Carrying Value, Ending Balance			10,870,000						10,870,000		10,870,000	$ 2,449,000
Working Capital			9,500,000						9,500,000		9,500,000
Stockholders' Equity Attributable to Parent, Ending Balance			$ 9,549,000	$ 1,600,000	$ 724,000	$ 2,389,000	$ (117,000)	$ (588,000)	9,549,000	2,389,000	$ 9,549,000	$ 1,385,000	$ 268,000
Proceeds from Issuance of Common Stock, Net									$ 9,335,000
Unsecured Debt, Total	$ 742,000
Forecast [Member]
Repayments of Unsecured Debt		$ 742,000
Underwritten Public Offering [Member]
Proceeds from Issuance of Common Stock, Net	$ 9,300,000

XML

Note 4 - Liquidity and Business Plan (Details Textual) - USD ($)		3 Months Ended	9 Months Ended		117 Months Ended
	Sep. 01, 2020	Jun. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020
Proceeds from Issuance of Common Stock, Net			$ 9,335,000
Proceeds from Issuance of Private Placement			$ 1,746,000	$ 3,142,000	$ (45,100,000)
Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	2,545,454
Proceeds from Issuance of Common Stock, Net	$ 9,300,000
Private Placement [Member]
Stock Issued During Period, Shares, New Issues (in shares)			437,000
Proceeds from Issuance of Private Placement		$ 1,700,000

XML

Note 5 - Summary of Significant Accounting Policies - Anti-dilutive Securities (Details) - shares	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Anti-dilutive securities (in shares)	8,741,927	5,128,610
Share-based Payment Arrangement [Member]
Anti-dilutive securities (in shares)	2,170,459	1,711,511
Warrant [Member]
Anti-dilutive securities (in shares)	6,571,468	3,417,099

XML

Note 6 - Indebtedness (Details Textual) - USD ($)		9 Months Ended
	May 01, 2020	Sep. 30, 2020	May 17, 2019
Proceeds from Paycheck Protection Program Under CARES Act	$ 103,000
Term Debt [Member]
Debt Instrument, Periodic Payment, Total		$ 10,000
Short-term Debt, Total		$ 39,000
Unsecured Promissory Note [Member]
Unsecured Long-term Debt, Noncurrent			$ 742,000

XML

Note 7 - Stockholders' Equity (Details Textual) - USD ($)		3 Months Ended	9 Months Ended
	Sep. 01, 2020	Sep. 30, 2020	Sep. 30, 2020	Sep. 30, 2019	Feb. 21, 2020
Proceeds from Issuance of Common Stock, Net			$ 9,335,000
Stock Issued During Period, Value, Exercise of Warrants for Cash		$ 52,000
Underwritten Warrants [Member]
Warrants and Rights Outstanding, Term (Year)	5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 4.538
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	127,273
Warrants and Rights Outstanding	$ 353,000
Class of Warrant or Right, Exercised During Period, Exercise Price (in dollars per share)	$ 1.875
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	15,000
Warrants in Connection with the Private Placement [Member]
Warrants and Rights Outstanding, Term (Year)		5 years	5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)		$ 6	$ 6
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)		437,000	437,000
Warrants Issued for Future Services [Member]
Warrants and Rights Outstanding, Term (Year)					5 years
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 6.49
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					75,000
Warrants and Rights Outstanding					$ 228,000
Underwritten Public Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	2,545,454
Proceeds from Issuance or Sale of Equity, Total	$ 10,500,000
Proceeds from Issuance of Common Stock, Net	$ 9,300,000
Stock Issued During Period, Shares, Warrants Exercised (in shares)	35,665
Stock Issued During Period, Shares, Exercise of Warrants for Cash (in shares)	27,500
Stock Issued During Period, Value, Exercise of Warrants for Cash	$ 52,000
Stock Issued During Period, Shares, Exercise of Warrants on Cashless Basis (in shares)	8,165
Private Placement [Member]
Stock Issued During Period, Shares, New Issues (in shares)			437,000

XML

Note 7 - Stockholders' Deficit - Common Stock Reserved for Future Issuance (Details) - shares	Sep. 30, 2020	Dec. 31, 2019
Stock options outstanding (in shares)	2,170,459
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	893,901	19,549
Common shares issuable under outstanding common stock purchase warrants (in shares)	6,571,468
Common Stock, Capital Shares Reserved for Future Issuance	9,635,828

XML

Note 8 - Stock-based Compensation (Details Textual) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	9,635,828
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	2,170,459	1,744,811
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	893,901	19,549
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount	$ 1.7
Sun BioPharma, Inc. 2016 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Common Stock, Capital Shares Reserved for Future Issuance (in shares)	2,800,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	1,906,099
Sun BioPharma, Inc. 2016 Omnibus Incentive Plan [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)	893,901
Sun BioPharma, Inc. 2011 Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)	10 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)	264,360
Sun BioPharma, Inc. 2011 Stock Option Plan [Member] | Share-based Payment Arrangement, Option [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	0 years
Sun BioPharma, Inc. 2011 Stock Option Plan [Member] | Share-based Payment Arrangement, Option [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)	2 years

XML

Note 8 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Share-based compensation expense	$ 969	$ 958
General and Administrative Expense [Member]
Share-based compensation expense	860	573
Research and Development Expense [Member]
Share-based compensation expense	$ 109	$ 385

XML

Note 8 - Stock-based Compensation - Summary of Option Activity (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Balance, shares available for grant (in shares)	19,549
Balance, shares underlying options (in shares)	1,744,811
Balance, weighted average exercise price per share (in dollars per share)	$ 6.53
Aggregate intrinsic value	$ 96,122	$ 1,047,197
Additional shares available to grant (in shares)	1,300,000
Granted, shares available for grant (in shares)	(425,648)
Granted, shares underlying options (in shares)	425,648
Granted, weighted average exercise price per share (in dollars per share)	$ 7.48
Balance, shares available for grant (in shares)	893,901
Balance, shares underlying options (in shares)	2,170,459
Balance, weighted average exercise price per share (in dollars per share)	$ 6.71

XML

Note 8 - Stock-based Compensation - Options Outstanding (Details)	9 Months Ended
	Sep. 30, 2020 $ / shares shares
Options outstanding (in shares) | shares	2,170,459
Options outstanding, weighted average remaining contractual life (Year)	7 years 175 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.36
Options excercisable (in shares) | shares	1,651,373
Options excercisable, weighted average remaining contractual life (Year)	7 years 25 days
Exercise Price Range 1 [Member]
Per share exercise price, lower limit (in dollars per share)	$ 0.875
Per share exercise price, upper limit (in dollars per share)	$ 1.10
Options outstanding (in shares) | shares	26,360
Options outstanding, weighted average remaining contractual life (Year)	2 years 91 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 1.03
Options excercisable (in shares) | shares	26,360
Options excercisable, weighted average remaining contractual life (Year)	2 years 91 days
Exercise Price Range 2 [Member]
Per share exercise price, lower limit (in dollars per share)	$ 2.275
Per share exercise price, upper limit (in dollars per share)	$ 2.50
Options outstanding (in shares) | shares	38,000
Options outstanding, weighted average remaining contractual life (Year)	3 years 135 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 2.46
Options excercisable (in shares) | shares	38,000
Options excercisable, weighted average remaining contractual life (Year)	3 years 135 days
Exercise Price Range 3 [Member]
Per share exercise price, lower limit (in dollars per share)	$ 2.95
Per share exercise price, upper limit (in dollars per share)	$ 3.70
Options outstanding (in shares) | shares	774,100
Options outstanding, weighted average remaining contractual life (Year)	7 years 208 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 3.04
Options excercisable (in shares) | shares	605,950
Options excercisable, weighted average remaining contractual life (Year)	7 years 94 days
Exercise Price Range 4 [Member]
Per share exercise price, lower limit (in dollars per share)	$ 4.50
Per share exercise price, upper limit (in dollars per share)	$ 8.10
Options outstanding (in shares) | shares	751,900
Options outstanding, weighted average remaining contractual life (Year)	7 years 343 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 6.24
Options excercisable (in shares) | shares	563,500
Options excercisable, weighted average remaining contractual life (Year)	7 years 142 days
Exercise Price Range 5 [Member]
Per share exercise price, lower limit (in dollars per share)	$ 9.99
Per share exercise price, upper limit (in dollars per share)	$ 10.10
Options outstanding (in shares) | shares	266,048
Options outstanding, weighted average remaining contractual life (Year)	9 years 65 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 9.99
Options excercisable (in shares) | shares	107,012
Options excercisable, weighted average remaining contractual life (Year)	8 years 102 days
Exercise Price Range 6 [Member]
Per share exercise price, lower limit (in dollars per share)	$ 15.10
Options outstanding (in shares) | shares	314,051
Options outstanding, weighted average remaining contractual life (Year)	5 years 237 days
Options outstanding, weighted average exercise price (in dollars per share)	$ 15.10
Options excercisable (in shares) | shares	310,551
Options excercisable, weighted average remaining contractual life (Year)	5 years 255 days

XML

Note 8 - Stock-based Compensation - Stock Option Valuation Assumption (Details) - Share-based Payment Arrangement, Option [Member]	9 Months Ended
	Sep. 30, 2020 $ / shares
Expected dividend yield	0.00%
Expected stock price volatility	90.00%
Minimum [Member]
Common stock fair value (in dollars per share)	$ 4.82
Risk-free interest rate	0.29%
Expected Option life (years) (Year)	5 years
Maximum [Member]
Common stock fair value (in dollars per share)	$ 9.99
Risk-free interest rate	0.39%
Expected Option life (years) (Year)	5 years 273 days