10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period ended June 30, 2021.

or

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

For the transition period from              to             

Commission File Number 000-19709

BIOLARGO, INC.

(Exact name of registrant as specified in its charter)

Delaware	65-0159115
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

14921 Chestnut St.

Westminster, CA 92683

(Address of principal executive offices)

(888) 400-2863

(Registrant’s telephone number, including area code)

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

Title of each class	Trading symbol(s)	Name of each exchange on which registered
Common stock	BLGO	OTC Markets (OTCQB)

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, a smaller reporting company, or emerging growth company. See definition 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  ☒

The number of shares of the Registrant’s Common Stock outstanding as of August 10, 2021 was 228,147,577 shares.

BIOLARGO, INC.

FORM 10-Q

INDEX

Item 1	Financial Statements	3
Item 2	Management's Discussion and Analysis and Financial Condition and Results of Operations	26
Item 4	Controls and Procedures	35

Item 2	Unregistered Sales of Equity Securities and Use of Proceeds	37
Item 5	Other Information	38
Item 6	Exhibits	39
	Signatures	41

i

PART I – FINANCIAL INFORMATION

Item 1. Financial Statements

BIOLARGO, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

AS OF JUNE 30, 2021 AND DECEMBER 31, 2020

(in thousands, except for per share data)

	June 30, 2021 (Unaudited)			December 31, 2020
Assets
Current assets:
Cash and cash equivalents	$	1,357		$	716
Accounts receivable, net of allowance		343			484
Inventories, net of allowance		262			277
Prepaid expenses and other current assets		90			28
Total current assets		2,052			1,505
Non-current assets
In-process research and development (Note 8)		2,150			2,150
Equipment, net of depreciation		69			60
Other non-current assets		35			35
Investment in South Korean joint venture		40			63
Right of use operating lease, net of amortization		311			341
Clyra Medical prepaid marketing (Note 9)		788			788
Total non-current assets		3,393			3,437
Total assets	$	5,445		$	4,942
Liabilities and stockholders’ equity (deficit)
Current liabilities:
Accounts payable and accrued expenses	$	331		$	513
Debt obligations, net of discount and amortization (Note 4)		—			1,102
Deferred revenue		139			48
Customer deposits		81			—
Lease liability		114			114
Clyra Medical accounts payable and accrued expenses (Note 9)		760			536
Clyra Medical debt obligations (Note 9)		1,007			1,231
Total current liabilities		2,432			3,544
Long-term liabilities:
Debt obligations, net of discount and amortization (Note 4)		485			507
Clyra Medical line of credit (Note 9)		200			—
Lease liability		196			226
Common stock held for redemption (Note 9)		900			900
Total long-term liabilities		1,781			1,633
Total liabilities		4,213			5,177
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS’ EQUITY (DEFICIT):
Preferred Series A, $0.00067 Par Value, 50,000,000 Shares Authorized, -0- Shares Issued and Outstanding, at June 30, 2021 and December 31, 2020		—			—
Common stock, $0.00067 Par Value, 400,000,000 Shares Authorized, 250,996,373 and 225,885,682 Shares Issued, at June 30, 2021 and December 31, 2020		168			151
Additional paid-in capital		140,292			135,849
Accumulated other comprehensive loss		(103	)		(101	)
Accumulated deficit		(135,294	)		(132,041	)
Total BioLargo Inc. and subsidiaries stockholders’ equity (deficit)		5,063			3,858
Non-controlling interest (Notes 9 and 10)		(3,831	)		(4,093	)
Total stockholders’ equity (deficit)		1,232			(235	)
Total liabilities and stockholders’ equity (deficit)	$	5,445		$	4,942

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

3

BIOLARGO, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS

FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2021 AND 2020

(in thousands, except for share and per share data)

(unaudited)

	THREE MONTHS						SIX MONTHS
	JUNE 30, 2021			JUNE 30, 2020			JUNE 30, 2021			JUNE 30, 2020
Revenues
Product revenue	$	319		$	301		$	762		$	580
Service revenue		145			117			273			276
Total revenue		464			418			1,035			856
Cost of revenue
Cost of goods sold		(160	)		(109	)		(397	)		(237	)
Cost of service		(103	)		(92	)		(205	)		(224	)
Gross profit		201			217			433			395
Selling, general and administrative expenses		1,547			1,872			3,310			3,417
Research and development		356			350			683			684
Operating loss:		(1,702	)		(2,005	)		(3,560	)		(3,706	)
Other (expense) income:
Interest expense		(89	)		(747	)		(182	)		(1,504	)
Loss on debt extinguishment		—			—			—			(214	)
PPP loan forgiveness		—			—			43			—
Tax credit		1			44			1			44
Grant income		—			7			30			64
Total other expense:		(88	)		(696	)		(108	)		(1,610	)
Net loss		(1,790	)		(2,701	)		(3,668	)		(5,316	)
Net loss attributable to noncontrolling interest		(168	)		(275	)		(415	)		(617	)
Net loss attributable to common shareholders	$	(1,622	)	$	(2,426	)	$	(3,253	)	$	(4,699	)
Net loss per share attributable to common shareholders:
Loss per share attributable to shareholders – basic and diluted	$	(0.01	)	$	(0.01	)	$	(0.02	)	$	(0.03	)
Weighted average number of common shares outstanding:		243,731,011			181,567,199			238,759,632			175,220,216
Comprehensive loss:
Net loss	$	(1,790	)	$	(2,701	)	$	(3,668	)	$	(5,316	)
Foreign currency translation		—			22			(2	)		22
Comprehensive loss		(1,790	)		(2,679	)		(3,670	)		(5,294	)
Comprehensive loss attributable to noncontrolling interest		(168	)		(275	)		(415	)		(617	)
Comprehensive loss attributable to common stockholders	$	(1,622	)	$	(2,404	)	$	(3,255	)	$	(4,677	)

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

4

BIOLARGO, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY (DEFICIT)
FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2021 AND 2020

(in thousands, except for share data)

(unaudited)

	Common stock				Additional paid-in			Accumulated			Accumulated other comprehensive			Non- controlling			Total stockholders’
	Shares		Amount		capital			deficit			Loss			interest			equity (deficit)
Balance, December 31, 2020		225,885,682	$	151	$	135,849		$	(132,041	)	$	(101	)	$	(4,093	)	$	(235	)
Sale of common stock for cash		13,330,619		9		2,097			—			—			—			2,106
Issuance of common stock for service		747,487		1		110			—			—			—			111
Stock option compensation expense		—		—		424			—			—			—			424
Warrants and conversion feature issued as discount on convertible note payable		—		—		35			—			—			—			35
Clyra Medical stock option expense		—		—		161			—			—			—			161
Noncontrolling interest allocation		—		—		(313	)		—			—			313			—
Clyra Medical securities offering		—		—		—			—			—			50			50
Net loss		—		—		—			(1,631	)		—			(247	)		(1,878	)
Foreign currency translation		—		—		—			—			(2	)		—			(2	)
Balance, March 31, 2021		239,963,788	$	161	$	138,363		$	(133,672	)	$	(103	)	$	(3,977	)	$	772
Conversion of notes		1,966,439		1		327			—			—			—			328
Sale of common stock for cash		8,627,237		6		1,408			—			—			—			1,414
Issuance of common stock for service		357,132		—		60			—			—			—			60
Issuance of common stock for interest		81,777		—		16			—			—			—			16
Stock option compensation expense		—		—		330			—			—			—			330
Clyra Medical stock option expense		—		—		102			—			—			—			102
Noncontrolling interest allocation		—		—		(314	)		—			—			314			—
Net loss		—		—		—			(1,622	)		—			(168	)		(1,790	)
Foreign currency translation		—		—		—			—			—			—			—
Balance, June 30, 2021		250,996,373	$	168	$	140,292		$	(135,294	)	$	(103	)	$	(3,831	)	$	1,232

	Common stock				Additional paid-in			Accumulated			Accumulated other comprehensive			Non- controlling			Total stockholders’
	Shares		Amount		capital			deficit			Loss			interest			equity (deficit)
Balance, December 31, 2019		166,256,024	$	111	$	121,327		$	(123,492	)	$	(99	)	$	(27	)	$	(2,180	)
Conversion of notes		3,387,649		2		432			—			—			—			434
Issuance of common stock for service		1,039,490		1		177			—			—			—			178
Issuance of common stock for interest		19,278		—		4			—			—			—			4
Sale of common stock for cash		4,848,305		3		898			—			—			—			901
Common stock issued as a financing fee; deferred offering costs		2,928,571		2		(124	)		—			—			—			(122	)
Stock option compensation expense		—		—		320			—			—			—			320
Deemed dividend for the change in accounting for derivative liability		—		—		100			(100	)		—			—			—
Clyra Medical securities offering		—		—		15			—			—			10			25
Clyra Medical stock option expense		—		—		420			—			—			—			420
Allocation of noncontrolling interest from Clyra Stock option issuance		—		—		(448	)		—			—			448			—
Net loss		—		—		—			(2,274	)		—			(342	)		(2,616	)
Balance, March 31, 2020		178,479,317	$	119	$	123,121		$	(125,866	)	$	(99	)	$	89		$	(2,636	)
Conversion of notes		6,463,784		6		682			—			—			—			688
Issuance of common stock for service		1,774,033		1		271			—			—			—			272
Issuance of common stock for interest		297,001		—		30			—			—			—			30
Sale of common stock for cash		3,689,246		2		558			—			—			—			560
Stock option compensation expense		—		—		528			—			—			—			528
Clyra Medical securities offering		—		—		476			—			—			348			824
Clyra Medical stock option expense		—		—		20			—			—			—			20
Clyra Medical stock for other asset (See Note 2)		—		—		788			—			—			—			788
Noncontrolling interest allocation		—		—		4,401			—			—			(4,401	)		—
Net loss		—		—		—			(2,426	)		—			(275	)		(2,701	)
Foreign currency translation		—		—		—			—			22			—			22
Balance, June 30, 2020		190,703,381	$	128	$	130,875		$	(128,292	)	$	(77	)	$	(4,239	)	$	(1,605	)

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

5

BIOLARGO, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS
FOR THE THREE AND SIX MONTHS ENDED JUNE 30, 2021 AND 2020

(in thousands, except for per share data)

(unaudited)

	JUNE 30, 2021			JUNE 30, 2020
Cash flows from operating activities
Net loss	$	(3,668	)	$	(5,316	)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock option compensation expense		1,017			1,074
Common stock issued in lieu of salary to officers and fees for services from vendors		171			450
Common stock issued for interest		16			34
Interest expense related to amortization of the discount on convertible notes payable and line of credit		110			1,327
PPP loan forgiveness		(43	)		—
Loss on extinguishment of debt		—			214
Loss on investment in South Korean joint venture		23			15
Bad debt expense		—			11
Depreciation expense		12			33
Changes in assets and liabilities:
Accounts receivable		141			86
Prepaid expenses and other current assets		(62	)		(4	)
Inventories		15			(100	)
Customer deposits		81			4
Accounts payable and accrued expenses		(182	)		47
Deferred revenue		91			(22	)
Clyra Medical accounts payable and accrued expenses		224			100
Net cash used in operating activities		(2,054	)		(2,047	)
Cash flows from investing activities
Investment in South Korean joint venture		—			(100	)
Purchase and sale of equipment		(21	)		16
Net cash used in investing activities		(21	)		(84	)
Cash flows from financing activities
Proceeds from sales of common stock		3,520			1,461
Proceeds from the sale of stock in Clyra Medical		50			849
Proceeds from payroll protection program loan		—			349
Payment of debt obligations		(828	)		—
Payment of Clyra Medical debt obligations		(24	)		—
Net cash provided by financing activities		2,718			2,661
Net effect of foreign currency translation		(2	)		22
Net change in cash		641			552
Cash at beginning of period		716			655
Cash at end of period	$	1,357		$	1,207
Supplemental disclosures of cash flow information
Cash paid for:
Interest	$	33		$	50
Income taxes	$	—		$	2
Non-cash investing and financing activities
Fair value of warrants issued with convertible notes	$	35		$	—
Inventory included in accounts payable and accrued expense	$	—		$	55
Lincoln Park deferred offering costs, recorded as additional paid-in capital	$	—		$	(122	)
Conversion of notes payable to common stock	$	328		$	1,122
Exchange of consulting services for Clyra common shares	$	—		$	788
Deemed dividend	$	—		$	100
Allocation of noncontrolling interest	$	627		$	4,849

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

6

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Note 1. Business and Organization

Description of Business

BioLargo, Inc. is an innovative technology developer and environmental engineering company driven by a mission to “make life better” by delivering robust, sustainable solutions for a broad range of industries and applications, with a focus on clean water, clean air and a cleaner earth. The company also owns a minority interest in a medical products subsidiary that has licensed BioLargo’s technologies.  Our business strategy is straightforward: we invent or acquire technologies that we believe have the potential to be disruptive in large commercial markets; we develop and validate these technologies to advance and promote their commercial success as we leverage our considerable scientific, engineering, and entrepreneurial talent; we then monetize these technical assets through a variety of business structures that may include licensure, joint venture, sale, spin off, or by deploying direct to market strategies.

Liquidity / Going concern

The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of our business. For the six months ended June 30, 2021, we had a net loss of $3,668,000, used $2,054,000 cash in operations, and at June 30, 2021, we had a working capital deficit of $380,000, and current assets of $2,052,000. We do not believe gross profits in 2021 will be sufficient to fund our current level of operations, and therefore we will have to obtain further investment capital to continue to fund operations, such as through our purchase agreement with Lincoln Park Capital. (See Note 3.) We have been, and anticipate that we will continue to be, limited in terms of our capital resources.

During the six months ended June 30, 2021, we generated revenues of $1,035,000 through our operational subsidiaries. (See Note 11.) Our subsidiaries did not individually or in the aggregate generate profits sufficient to fund their operations, or contribute to our corporate operations. Thus, we continued to sell securities to raise cash (see Note 3), and received additional research grant aid through our Canadian subsidiary.

As of June 30, 2021, our cash and cash equivalents totaled $1,357,000. During the six months ended June 30, 2021 we made cash payments to retire debt obligations totaling $852,000 (see Note 4 and Note 9 (“Inventory Line of Credit”)). Our total debt as of June 30, 2021 was $1,721,000. Of that amount, $1,207,000 is owed by our partially owned subsidiary Clyra Medical Technologies, Inc. (“Clyra”) as follows: (i) a note with a maturity date that automatically extends each June (see Note 9, “Note Payable (Scion)”), and (ii) a line of credit totaling $200,000, due in June 2023. Our remaining $514,000 of debt includes (i) $314,000 of loans issued as part of the Small Business Administration’s (“SBA”) Paycheck Protection Program (for which we have applied for forgiveness, (ii) a $150,000 loan accruing interest at 3.75% annually from the SBA’s Economic Injury Disaster Loan program that is payable over 30 years beginning August 2021, and (iii) a $50,000 convertible debt due in March 2023.

During the six months ended June 30, 2021, we received $3,015,000 in proceeds from sales of our common stock to Lincoln Park and $505,000 from stock sales from our 2020 Unit Offering (see Note 3). The cash we receive from stock sales to Lincoln Park is a function of stock price and volume – a lower stock price and less trading volume results in less money we can receive from Lincoln Park. Our agreement with Lincoln Park precludes us from selling shares to Lincoln Park on a daily basis if our stock price falls below $0.10 per share.

If we are unable to rely on our current arrangement with Lincoln Park to fund our working capital requirements, we would have to rely on other forms of financing, and there is no assurance that we will be able to do so, or if we do so, it will be on favorable terms.

To reduce our operational cash burdens, we regularly issue officers and vendors stock or options in lieu of cash compensation, and we anticipate that we will continue to be able to do so in the future. In the six months ended June 30, 2021, our CEO and CSO accepted stock in lieu of $31,000 in unpaid salary. Our CFO has also agreed to receive options to purchase our common stock in lieu of cash, (see Note 5, “Chief Financial Officer Extension”) as compensation for his services. Each has indicated a willingness to do so in the future.

The foregoing factors raise substantial doubt about our ability to continue as a going concern. Ultimately, our ability to continue as a going concern is dependent upon our ability to attract significant new sources of capital, attain a reasonable threshold of operating efficiencies and achieve profitable operations by licensing or otherwise commercializing products incorporating our technologies. The consolidated financial statements do not include any adjustments that might be necessary if we are unable to continue as a going concern.

7

 

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Organization

We are a Delaware corporation formed in 1991. We have four wholly-owned subsidiaries: BioLargo Life Technologies, Inc., organized under the laws of the State of California in 2006; ONM Environmental, Inc., organized under the laws of the State of California in 2009; BioLargo Water Investment Group Inc., organized under the laws of the State of California in 2019, which wholly owns BioLargo Water, Inc., organized under the laws of Canada in 2014; and BioLargo Development Corp., organized under the laws of the State of California in 2016. Additionally, we own 94% of BioLargo Engineering Science and Technologies, LLC (“BLEST”), organized under the laws of the State of Tennessee in 2017 (see Note 10). We also own 45% of Clyra Medical Technologies, Inc. (“Clyra” or “Clyra Medical”), organized under the laws of the State of California in 2012, and consolidate their financial statements (see Note 2, subheading “Principles of Consolidation,” and Note 9).

The unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and pursuant to Rule 8-03 of Regulation S-X under the Securities Act of 1933, as amended. Accordingly, they do not include all of the information and notes required by generally accepted accounting principles for annual financial statements.  In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation have been included. For some of our activities, we are still operating in the early stages of the sales and distribution process, and therefore our operating results for the six months ended June 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021, or for any other period. These unaudited consolidated financial statements and notes should be read in conjunction with the Company’s audited consolidated financial statements and accompanying notes included in the Annual Report on Form 10-K for the year ended December 31, 2020, filed with the Securities and Exchange Commission (the “SEC”) on March 30, 2021.

Note 2. Summary of Significant Accounting Policies

In the opinion of management, the accompanying balance sheet and related statements of operations, cash flows, and stockholders’ deficit include all adjustments, consisting only of normal recurring items, necessary for their fair presentation in conformity with accounting principles generally accepted in the United States of America.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries, BLEST, and Clyra Medical. Management believes Clyra Medical’s financial statements are appropriately consolidated with that of the Company after reviewing the Accounting Standards Codification (“ASC”), 810, “Consolidation” (“ASC 810), and concluding that BioLargo controls Clyra Medical. While BioLargo does not have voting interest control through a majority stock ownership of Clyra Medical (it owns 45% of the outstanding voting stock), it does exercise control under the “Variable Interest Model.” There is substantial board overlap, BioLargo is the primary beneficiary since it has the power to direct Clyra Medical’s activities that most significantly impact Clyra Medical’s performance, and it has the obligation to absorb losses or receive benefits (through royalties and licensing) that could be potentially significant to Clyra Medical. BioLargo has consolidated Clyra Medical’s operations for all periods presented. (See Note 9.)

All intercompany accounts and transactions have been eliminated in the financial statement presentation.

Foreign Currency

The Company has designated the functional currency of BioLargo Water, Inc., our Canadian subsidiary, to be the Canadian dollar. Therefore, translation gains and losses resulting from differences in exchange rates are recorded in accumulated other comprehensive income.

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less when acquired to be cash equivalents. Substantially all cash equivalents are held in short-term money market accounts at one of the largest financial institutions in the United States. From time to time, our cash account balances are greater than the Federal Deposit Insurance Corporation insurance limit of $250,000 per owner per bank, and during such times, we are exposed to credit loss for amounts in excess of insured limits in the event of non-performance by the financial institution. We do not anticipate non-performance by our financial institution.

8

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

As of June 30, 2021 and December 31, 2020, our cash balances were made up of the following (in thousands):

	June 30, 2021		December 31, 2020
BioLargo, Inc. and subsidiaries	$	1,338	$	637
Clyra Medical Technologies, Inc.		19		79
Total	$	1,357	$	716

Accounts Receivable

Trade accounts receivable are recorded net of allowances for doubtful accounts. Estimates for allowances for doubtful accounts are determined based on payment history and individual customer circumstances. The allowance for doubtful accounts as of  June 30, 2021 was $12,000 and at December 31, 2020, was $13,000.

Credit Concentration

We have a limited number of customers that account for significant portions of our revenue. During the six months ended June 30, 2021 and 2020, we had the following customers that accounted for more than 10% of consolidated revenues, as follows:

	June 30, 2021			June 30, 2020
Customer A		22	%		<10	%
Customer B		19	%		<10	%
Customer C		11	%		<10	%
Customer D		<10	%		13	%

We had three customers that each accounted for more than 10% of consolidated accounts receivable at June 30, 2021, and two customers at December 31, 2020, as follows:

	June 30, 2021			December 31, 2020
Customer C		31	%		<10	%
Customer D		17	%		<10	%
Customer E		11	%		<10	%
Customer F		<10	%		32	%
Customer G		<10	%		10	%

Inventory

Inventories are stated at the lower of cost or net realizable value using the average cost method. The allowance for obsolete inventory as of  June 30, 2021, and December 31, 2020, was $3,000. Inventories consisted of (in thousands):

	June 30, 2021		December 31, 2020
Raw material	$	91	$	111
Finished goods		171		166
Total	$	262	$	277

Other Assets

Other Assets consisted of security deposits of $35,000 related to our business offices.

9

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Equity Method of Accounting

On March 20, 2020, we invested $100,000 into a South Korean entity (Odin Co. Ltd., “Odin”) pursuant to a Joint Venture agreement we had entered into with BKT Co. Ltd. and its U.S. subsidiary, Tomorrow Water. We received a 40% non-dilutive equity interest, and BKT and Tomorrow Water each received 30% equity interests for an aggregate $150,000 investment.

We account for our investment in the joint venture under the equity method of accounting. We have determined that while we have significant influence over the joint venture through our technology license and our position on the Board of Directors, we do not control the joint venture or are otherwise involved in managing the entity and we own less than a majority of the equity. Therefore, we record the asset on our consolidated balance sheet and record an increase or decrease the recorded balance by our percentage ownership of the profits or losses in the joint venture. The joint venture incurred a loss during the three and six months ended June 30, 2021, and our 40% ownership share reduced our investment interest by $10,000 and $23,000, respectively.

Impairment

Long-lived and definite lived intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected future undiscounted cash flows from the use of the asset and its eventual disposition is less than the carrying amount of the asset, then an impairment loss is recognized. The impairment loss is measured based on the fair value of the asset. Any resulting impairment is recorded as a reduction in the carrying value of the related asset in excess of fair value and a charge to operating results. For the three and six months ended June 30, 2021 and 2020, management determined that there was no impairment of its long-lived assets, including its In-process Research and Development (see Note 8).

Earnings (Loss) Per Share

We report basic and diluted earnings (loss) per share (“EPS”) for common and common share equivalents. Basic EPS is computed by dividing reported earnings by the weighted average shares outstanding. Diluted EPS is computed by adding to the weighted average shares the dilutive effect if stock options and warrants were exercised into common stock. For the three and six months ended June 30, 2021 and 2020, the denominator in the diluted EPS computation is the same as the denominator for basic EPS due to the anti-dilutive effect of the warrants and stock options on the Company’s net loss.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the period reported. Actual results could differ from those estimates. Estimates are used when accounting for stock-based transactions, debt transactions, derivative liabilities, allowance for bad debt, asset depreciation and amortization, among others.

The methods, estimates and judgments we use in applying these most critical accounting policies have a significant impact on the results of our financial statements.

Share-Based Compensation Expense

We recognize compensation expense for stock option awards on a straight-line basis over the applicable service period of the award, which is the vesting period. Fair value is determined on the grant date. Share-based compensation expense is based on the grant date fair value estimated using the Black-Scholes Option Pricing Model.

For stock and stock options issued to consultants and other non-employees for services, the Company measures and records an expense as of the earlier of the date at which either: a commitment for performance by the non-employee has been reached or the non-employee’s performance is complete. The equity instruments are measured at the current fair value, and for stock options, the instruments are measured at fair value using the Black Scholes option model.

10

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

The following methodology and assumptions were used to calculate share-based compensation for the six months ended June 30, 2021 and 2020:

	2021						2020
	Non Plan			2018 Plan			Non Plan		2018 Plan
Risk free interest rate		1.73	%	0.93	–	1.73%	0.88	%	0.88	–	1.90%
Expected volatility		124	%	123	–	124%	131	%	131	–	133%
Expected dividend yield		—			—		—			—
Forfeiture rate		—			—		—			—
Life in years		10			10		10			10

Expected price volatility is the measure by which our stock price is expected to fluctuate during the expected term of an option. Expected volatility is derived from the historical daily change in the market price of our common stock, as we believe that historical volatility is the best indicator of future volatility.

The risk-free interest rate used in the Black-Scholes calculation is based on the prevailing U.S. Treasury yield as determined by the U.S. Federal Reserve. We have never paid any cash dividends on our common stock and do not anticipate paying cash dividends on our common stock in the foreseeable future.

Historically, we have not had significant forfeitures of unvested stock options granted to employees and Directors. A significant number of our stock option grants are fully vested at issuance or have short vesting provisions. Therefore, we have estimated the forfeiture rate of our outstanding stock options as zero.

Warrants

Warrants issued with our convertible promissory notes, note payables, line of credit are accounted for under the fair value and relative fair value method.

The warrant is first analyzed per its terms as to whether it has derivative features or not. If the warrant is determined to be a derivative and not qualify for equity treatment, then it is measured at fair value using the Black Scholes option model, and recorded as a liability on the balance sheet. The warrant is re-measured at its then current fair value at each subsequent reporting date (it is “marked-to-market”).

If the warrant is determined to not have derivative features, it is recorded into equity at its fair value using the Black Scholes option model, however, limited to a relative fair value based upon the percentage of its fair value to the total fair value including the fair value of the convertible note.

Convertible debt instruments are recorded at fair value, limited to a relative fair value based upon the percentage of its fair value to the total fair value including the fair value of the warrant. Further, the convertible debt instrument is examined for any intrinsic beneficial conversion feature (“BCF”) of which the conversion price is less than the closing common stock price on date of issuance. If the relative fair value method is used to value the convertible debt instrument and there is an intrinsic BCF, a further analysis is undertaken of the BCF using an effective conversion price which assumes the conversion price is the relative fair value divided by the number of shares the convertible debt is converted into by its terms. The BCF value is accounted for as equity.

The warrant and BCF relative fair values are also recorded as a discount to the convertible promissory notes. At present, these equity features of the convertible promissory notes have recorded a discount to the convertible notes that is substantially equal to the proceeds received.

Non-Cash Transactions

We have established a policy relative to the methodology to determine the value assigned to each intangible we acquire, and/or services or products received for non-cash consideration of our common stock. The value is based on the market price of our common stock issued as consideration, at the date of the agreement of each transaction or when the service is rendered, or product is received.

11

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Revenue Recognition

We account for revenue in accordance with ASC 606, “Revenue from Contacts with Customers”. The guidance focuses on the core principle for revenue recognition, which is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the guidance provides that an entity should apply the following steps:

Step 1: Identify the contract(s) with a customer.

Step 2: Identify the performance obligations in the contract.

Step 3: Determine the transaction price.

Step 4: Allocate the transaction price to the performance obligations in the contract.

Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation.

Products sold a through a contract with the customer and written purchase order, in which the details of the contract are defined including the transaction price and method of shipment. The only performance obligation is to create and ship the product and each product has separate pricing. Revenue is recognized at a point in time when the goods are shipped if the agreement is FOB manufacturer, and when goods are delivered if FOB destination. Revenue is recognized with a reduction for sales discounts, as appropriate and negotiated in the customer’s purchase order.

Service contracts are performed through a written contract, which specifies the performance obligations and the rate at which the services will be billed, typically by time and materials. Each service is separately negotiated and priced. Revenue is recognized as services are performed and completed, or, for services related to product installations, at the completion of the installation. A few contracts have called for milestone or fixed cost payments, where we invoice an agreed-to amount per month for the life of the contract. In these instances, completed work, billed hourly, is recognized as revenue. If the billing amount is greater or lesser than the completed work, a receivable or payable is created. These accounts are adjusted upon additional billings as the work is completed. To date, there have been no discounts or other financing terms for the contracts.

In the event that we generate revenues from royalties or license fees from our intellectual property, we anticipate a licensee would pay a license fee in one or more installments and ongoing royalties based on their sales of products incorporating or using our licensed intellectual property. Upon entering into a licensing agreement, we will determine the appropriate method of recognizing the royalty and license fees.

Clyra also has certain distribution agreements that call for consigned inventory. Although the product is shipped to a third party, it is not revenue until that consigned inventory is sold to end user customer.

Government Grants

We have been awarded multiple research grants from the Canadian National Research Institute – Industrial Research Assistance Program (NRC-IRAP) and the National Science and Engineering Research Council of Canada (NSERC). The grants received are considered other income and are included in our consolidated statements of operations. We received our first grant in 2015 and have been awarded over 80 grants totaling over $3.7 million. Some of the funds from these grants are given directly to third parties (such as the University of Alberta or a third-party research scientist) to support research on our technology. The grants have terms generally ranging between six and eighteen months and support a majority, but not all, of the related research budget costs. This cooperative research allows us to utilize (i) a depth of resources and talent to accomplish highly skilled work, (ii) financial aid to support research and development costs, (iii) independent and credible validation of our technical claims.

The grants typically provide for (i) recurring monthly amounts, (ii) reimbursement of costs for research talent for which we invoice to request payment, and (iii) ancillary cost reimbursement for research talent travel related costs. All awarded grants have specific requirements on how the money is spent, typically to employ researchers. None of the funds may be used for general administrative expenses or overhead in the United States. These grants have substantially increased our level of research and development activities in Canada. We continue to apply for Canadian government and agency grants to fund research and development activities. Not all of our grant applications have been awarded, and no assurance can be made that any pending grant application, or any future grant applications, will be awarded.

12

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Income Taxes

The asset and liability approach is used to recognize deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of asset and liabilities. Deferred tax assets and liabilities are determined based on the differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The effect on deferred tax asset and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

We account for uncertainties in income tax law under a comprehensive model for the financial statement recognition, measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns as prescribed by generally accepted accounting principles (“GAAP”).  Under GAAP, the tax effects of a position are recognized only if it is “more-likely-than-not” to be sustained by the taxing authority as of the reporting date.  If the tax position is not considered “more-likely-than-not” to be sustained, then no benefits of the position are recognized.  Management believes there are no unrecognized tax benefits or uncertain tax positions as of June 30, 2021, and December 31, 2020.

The Company assessed its earnings history, trends and estimates of future earnings and determined that the deferred tax asset could not be realized as of June 30, 2021. Accordingly, a valuation allowance was recorded against the net deferred tax asset.

The Company recognizes interest and penalties on income taxes as a component of income tax expense, should such an expense be realized.

Fair Value of Financial Instruments

Management believes the carrying amounts of the Company’s financial instruments (excluding debt and equity instruments) as of June 30, 2021 and December 31, 2020, approximate their respective fair values because of the short-term nature of these instruments. Such instruments consist of cash, accounts receivable, prepaid assets, accounts payable, lines of credit, and other assets and liabilities.

Tax Credits

Our research and development activities in Canada may entitle our Canadian subsidiary to claim benefits under the “Scientific Research and Experimental Development Program”, a Canadian federal tax incentive program designed to encourage Canadian businesses of all sizes and in all sectors to conduct research and development in Canada. Benefits under the program include credits to taxable income. If our Canadian subsidiary does not have taxable income in a reporting period, we instead receive a tax refund from the Canadian Revenue Authority. Those refunds are classified in Other Income on our Consolidated Statement of Operations and Comprehensive Loss.

Leases

In accordance with ASC 842, the Company elects to use hindsight as a practical expedient with respect to determining the lease terms (as we considered our updated expectations of acceptance of the Westminster California facility lease renewal) and in assessing any impairment of right-of-use assets for existing leases. No impairment is expected at this time.  As of June 30, 2021, the right of use assets on our balance sheet related to our operating leases total $311,000.

Recent Accounting Pronouncements

In May 2021, the FASB issued Accounting Standards Update No. 2021-04, regarding accounting for certain modifications of written call options.

In August 2020, the FASB issued Accounting Standards Update No. 2020-06, “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging— Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity”. For convertible instruments, the FASB decided to reduce the number of accounting models for convertible debt instruments and convertible preferred stock. Limiting the accounting models results in fewer embedded conversion features being separately recognized from the host contract as compared with current GAAP. Convertible instruments that continue to be subject to separation models are (1) those with embedded conversion features that are not clearly and closely related to the host contract, that meet the definition of a derivative, and that do not qualify for a scope exception from derivative accounting and (2) convertible debt instruments issued with substantial premiums for which the premiums are recorded as paid-in capital. The FASB decided to amend the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions. The FASB observed that the application of the derivatives scope exception guidance results in accounting for some contracts as derivatives while accounting for economically similar contracts as equity. The FASB also decided to improve and amend the related EPS guidance. The amendments in this Update are effective for public business entities that meet the definition of a Securities and Exchange Commission (SEC) filer, excluding entities eligible to be smaller reporting companies as defined by the SEC, for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Management is currently evaluating the effect on the Company’s financials if and when future convertible securities are issued. This Update does not affect the Company’s current financial statements.

13

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

In January 2020, the FASB issued Accounting Standards Update No 2020-01, “Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815): Clarifying the Interactions between Topic 321, Topic 323, and Topic 815”. This Update relates to the Company’s equity method of accounting and the potential interactions between the measurement alternative in Topic 321 and the equity method of accounting in Topic 323 and that diverse views have emerged about the application of the measurement alternative and the equity method of accounting since the adoption of Update 2016-01.  The measurement alternative is the ability to measure certain equity securities without a readily determinable fair value at cost, minus impairment, if any. Paragraph 321-10-35-2, as amended, states that if an entity identifies observable price changes in orderly transactions for the identical or a similar investment of the same issuer, it should measure the equity security at fair value as of the date that the observable transaction occurred (hereinafter referred to as the measurement alternative). The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. Management adopted the updates, and after evaluation, did not make any modifications to the financial statements.

Note 3. Sale of Stock for Cash

Lincoln Park Financing

On March 30, 2020, we entered into a stock purchase agreement (the “Purchase Agreement”) with Lincoln Park Capital Fund, LLC (“Lincoln Park”), pursuant to which Lincoln Park agreed to purchase from us at our request up to an aggregate of $10,250,000 of our common stock (subject to certain limitations) from time to time over a period of three years. The agreement allows us, at our sole discretion, to direct Lincoln Park to purchase shares of our common stock, subject to limitations in both volume and dollar amount. The purchase price of the shares that may be sold to Lincoln Park under the agreement is the lower of (i) the lowest sale price on the date of purchase, or (ii) the average of the three lowest closing prices in the prior 12 business days. There are no restrictions on future financings, rights of first refusal, participation rights, penalties or liquidated damages other than a prohibition on entering into a “Variable Rate Transaction,” as defined in the agreement. This agreement replaced the August 2017 agreement with Lincoln Park. Concurrently with the Purchase Agreement, we entered into a Registration Rights Agreement, pursuant to which we filed a registration statement on Form S-1 with the SEC on April 10, 2020. This registration statement was declared effective on April 21, 2020, and as of April 29, 2020, we commenced regular purchases under the agreement. The Purchase Agreement replaced a similar agreement with Lincoln Park dated August 2017.

During the six months ended June 30, 2021 and 2020, we sold 18,526,309 and 3,198,358 shares, respectively, to Lincoln Park, and received $3,015,000 and $1,461,000, respectively, in gross and net proceeds. Subsequent to June 30, 2021, we continue to draw on the Purchase Agreement for working capital from time to time (see Note 13).

2020 Unit Offering

During the six months ended June 30, 2021 and 2020, pursuant to an offering commenced in March 2020, we sold 3,431,547 and 1,571,667 shares, respectively, of our common stock and received $505,000 and $242,000, respectively, in gross and net proceeds, from a total of six accredited investors. In addition to the shares, we issued each investor a six-month and a five-year warrant to purchase additional shares (see Note 6, “Warrants Issued in 2020 Unit Offering”).

14

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Note 4. Debt Obligations

The following table summarizes our debt obligations outstanding as of June 30, 2021, and December 31, 2020 (in thousands). The table does not include debt obligations of our partially owned subsidiary Clyra Medical (see Note 9, “Debt Obligations of Clyra Medical”).

	June 30, 2021 (Unaudited)			December 31, 2020
Current portion of debt:
Note payable, matures on demand 60 days’ notice (or March 8, 2023)	$	—		$	50
Line of credit, matures on 30-day demand		—			50
Total notes payable and line of credit	$	—		$	100
Convertible notes payable:
Convertible note payable, matures April 20, 2021	$	—		$	100
Convertible note payable, matures August 9, 2021		—			600
Convertible notes, mature August 12 and 16, 2021		—			406
Total convertible notes payable		—			1,106
Debt discount, net of amortization		—			(104	)
Total current liabilities		—			1,102
Long-term debt:
Convertible note payable, matures March 1, 2023	$	50		$	—
Debt discount, net of amortization		(29	)		—
SBA Paycheck Protection Program loans		314			357
SBA EIDL Loan		150			150
Total long-term liabilities		485			507
Total	$	485		$	1,609

For the six months ended June 30, 2021 and 2020, we recorded $182,000 and $1,504,000, respectively, of interest expense related to the amortization of discounts on convertible notes payable, and coupon interest from our note payable, convertible notes and line of credit.

The following discussion includes debt instruments to which amendments were made or included other activity that management deemed appropriate to disclose during the six months ended June 30, 2021 and 2020. Each of the debt instruments contained in the above table are disclosed more fully in the financial statements contained in the Company’s Form 10-K filed March 30, 2021.

Cash payment of debt obligations

On May 17, 2021, we paid $178,000 in cash to Vernal Bay Investments, LLC, as payment of one-half the outstanding principal on the convertible note scheduled to mature on August 12, 2021. In addition, we issued 1,272,321 shares of our common stock to pay the remaining principal and interest due on the note.

On March 1, 2021, we paid in cash the outstanding principal of $600,000 on the promissory note issued August 9, 2019, and scheduled to mature on August 9, 2021.

On March 1, 2021, we paid in cash the outstanding principal of $50,000 on the remaining amount due on a line of credit in which was due on demand at any time after September 1, 2019. There is no remaining balance on this line of credit, and we no longer have the ability to draw on the line of credit.

Conversion of Debt into shares of common stock

On May 18, 2021, we converted to equity a promissory note, that was scheduled to mature on August 18, 2021, in the principal balance of $50,000 into 294,118 shares of our common stock.

On its maturity date of April 20, 2021, we converted to equity a promissory note in the principal balance of $100,000 into 400,000 shares of our common stock.

15

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Amendment to Note payable matures on 60 days’ notice (or March 8, 2023)

On March 1, 2021, we and the holder of a $50,000 note payable modified the note to set a specific maturity date of March 1, 2023, and allow the investor to convert the note to our common stock at a price of $0.16 per share. In lieu of interest during the extended period of the note, we issued the investor a stock purchase warrant (see Note 6).

Note 5. Share-Based Compensation

Issuance of Common Stock in exchange for payment of payables

Payment of Officer Salaries

On March 31, 2021, we issued 137,364 shares of our common stock at $0.23 per share in lieu of $31,000 of accrued and unpaid salary to our officers.

On June 30, 2020, we issued 367,403 shares of our common stock at $0.16 per share in lieu of $59,000 of accrued and unpaid salary to our officers. On March 31, 2020, we issued 648,755 shares of our common stock at $0.17 per share in lieu of $110,000 of accrued and unpaid salary to our officers.

Payment of Consultant Fees

On June 30, 2021, we issued 357,132 shares of our common stock at $0.17 per share in lieu of $60,000 of accrued and unpaid obligations to consultants. On March 31, 2021, we issued 610,123 shares of our common stock at $0.23 per share in lieu of $81,000 of accrued and unpaid obligations to consultants.

On June 30, 2020, we issued 1,406,630 shares of our common stock at $0.16 per share in lieu of $213,000 of accrued and unpaid salary to consultants. On March 31, 2020, we issued 390,735 shares of our common stock at $0.17 per share in lieu of $67,000 of accrued and unpaid obligations to consultants.

Payment of Accrued Interest

During the three months ended June 30, 2021, we issued 81,777 shares of our common stock at $0.17 per share in lieu of $16,000 of accrued and unpaid interest.

On June 30, 2020, we issued 594,428 shares of our common stock at $0.16 per share in lieu of $30,000 of accrued and unpaid interest.  On March 31, 2020, we issued 19,278 shares of our common stock at $0.17 per share in lieu of $4,000 of accrued interest.

Stock Option Expense

During the six months ended June 30, 2021 and 2020, we recorded an aggregate $754,000 and $848,000, in selling general and administrative expense related to the issuance of stock options. We issued options through our 2018 Equity Incentive Plan, our now expired 2007 Equity Incentive Plan, and outside of these plans. See Note 9 for information on stock option expense for options issued by subsidiary Clyra.

2018 Equity Incentive Plan

On June 22, 2018, our stockholders adopted the BioLargo 2018 Equity Incentive Plan (“2018 Plan”) as a means of providing our directors, key employees and consultants additional incentive to provide services. Both stock options and stock grants may be made under this plan for a period of 10 years. Our Board of Director’s Compensation Committee administers this plan. As plan administrator, the Compensation Committee has sole discretion to set the price of the options. The plan authorizes the following types of awards: (i) incentive and non-qualified stock options, (ii) restricted stock awards, (iii) stock bonus awards, (iv) stock appreciation rights, (v) restricted stock units, and (vi) performance awards. The total number of shares reserved and available for awards pursuant to this Plan as of the date of adoption of this 2018 Plan by the Board is 40 million shares. The number of shares available to be issued under the 2018 Plan increases automatically each January 1st by the lesser of (a) 2 million shares, or (b) such number of shares determined by our Board.

16

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Activity for our stock options under the 2018 Plan for the six months ended June 30, 2021 and June 30, 2020, is as follows:

							Weighted
							Average		Aggregate
	Options			Exercise			Price per		intrinsic
	Outstanding			Price per share			share		Value(1)
Balance, December 31, 2020		18,865,525		$0.16	–	0.40	$	0.19
Granted		2,483,691		0.13	–	0.23		0.19
Expired		—			—			—
Balance, June 30, 2021		21,349,216		$0.12	–	0.43	$	0.19
Non-vested		(4,218,833	)	0.12	–	0.40		0.23
Vested, June 30, 2021		17,130,383		$0.12	–	0.43	$	0.18	$	250,000
Balance, December 31, 2019		9,214,356		$0.16	–	0.43	$	0.25
Granted		8,610,689		0.17	–	0.22		0.19
Expired		(200,000	)	0.18	–	0.34		0.26
Balance, June 30, 2020		17,625,045		$0.16	–	0.43	$	0.20

(1) Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021.

The options granted to purchase 2,483,691 shares during the six months ended June 30, 2021 were issued to an officer, board of directors, employees and consultants: (i) we issued options to purchase 300,000 shares of our common stock at an exercise price on the respective grant date of $0.17 per share to our CFO as described below; (ii) we issued options to purchase 693,762 shares of our common stock at an exercise price on the respective grant date of $0.17 and $0.23 per share to members of our board of directors for services performed, in lieu of cash; the fair value of these options totaled $130,000, and is recorded as selling, general and administrative expenses; (iii) we issued options to purchase 1,298,411 shares of our common stock to employees as part of an employee retention and expiring options plan at exercises price on the respective date ranging between $0.17 and $0.23 per share; the fair value of employee retention plan options totaled $234,000 and will vest quarterly over four years as long as they are retained as employees; and (iv) we issued options to purchase 191,518 shares of our common stock to consultants and employees in lieu of cash for unpaid obligations totaling $35,000. All stock option expense is recorded on our consolidated statement of operations as selling, general and administrative expense.

The options granted under the 2018 Plan to purchase 8,610,689 shares during the six months ended June 30, 2020 were issued to officers, board of directors, employees and consultants: (i) we issued options to purchase 4,880,945 shares of our common stock at an exercise price of $0.14 per share to employees and consultants as a bonus during the pandemic. These options vest quarterly over one year and the fair value totaled $656,000 (ii) we issued options to purchase 457,500 shares of our common stock at an exercise price range of $0.14 – $0.21 per share to our CFO , with 177,500 shares having vested during the six months ended June 30, 2020, and the remaining shares to vest 25,000 monthly through January 31, 2021; (ii) we issued options to purchase 821,434 shares of our common stock at an exercise price on the respective grant date of $0.17 and $0.16 per share to members of our board of directors for services performed, all options vested at issuance and the fair value of these options totaled $130,000; (iii) we issued options to purchase 939,332 shares of our common stock to employees as part of an employee retention plan at an exercise price on the respective date of $0.17 and $0.16 per share; the fair value of employee retention plan options totaled $151,000 and vest quarterly over four years as long as they are retained as employees; (iv) we issued options to purchase 449,286 shares of our common stock to consultants in lieu of cash for unpaid obligations totaling $65,000; and (v) we issued options to purchase 1,062,192 shares of common stock at an exercise price ranging between $0.14 – $0.17 per share to employees to convert accrued and unpaid obligations and for previously issued options that expire. All of these options vested at issuance and the fair value totaled $145,000, All stock option expense is recorded on our consolidated statement of operations as selling, general and administrative expense.

Chief Financial Officer Contract Extension

On March 17, 2021, we and our Chief Financial Officer Charles K. Dargan, II, formally agreed to extend the engagement agreement dated February 1, 2008 (the “Engagement Agreement”, which had been previously extended multiple times), pursuant to which Mr. Dargan has been and continues to serve as the Company’s Chief Financial Officer. The Engagement Extension Agreement dated as of February 25, 2020 (the “Engagement Extension Agreement”) provides for an additional term to begin retroactively on October 1, 2019, and to expire January 31, 2021 (the “Extended Term”).

17

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

As compensation for the Extended Term, Mr. Dargan was issued an option (“Option”) to purchase 300,000 shares of our common stock. The Option vests over the period of the Extended Term, with 125,000 shares having vested as of June 30, 2021, and the remaining 175,000 shares to vest monthly through January 31, 2022, so long as the agreement is in full force and effect. The Option is exercisable at $0.23 per share, the closing price of our common stock on March 17, 2021, expires ten years from the grant date, and was issued pursuant to the 2018 Equity Incentive Plan. The fair value of these options totaled $49,000, which expense is recorded ratably over the twelve-month agreement term.

The Option is Mr. Dargan’s sole compensation for the Extended Term. As was the case in all prior terms of his engagement, there is no cash component of his compensation for the Extended Term. Mr. Dargan is eligible to be reimbursed for business expenses he incurs in connection with the performance of his services as the Company’s Chief Financial Officer (although he has made no such requests for reimbursement in the past). All other provisions of the Engagement Agreement not expressly amended pursuant to the Engagement Extension Agreement remain the same, including provisions regarding indemnification and arbitration of disputes.

2007 Equity Incentive Plan

On September 7, 2007, and as amended April 29, 2011, the BioLargo, Inc. 2007 Equity Incentive Plan (“2007 Plan”) was adopted as a means of providing our directors, key employees and consultants additional incentive to provide services. Both stock options and stock grants may be made under this plan for a period of 10 years, which expired on September 7, 2017. The Board’s Compensation Committee administers this plan. As plan administrator, the Compensation Committee has sole discretion to set the price of the options. As of September 2017, the Plan was closed to further stock option grants.

Activity for our stock options under the 2007 Plan for the six months ended June 30, 2021 and 2020 is as follows:

							Weighted
							Average		Aggregate
	Options			Exercise			Price per		intrinsic
	Outstanding			price per share			share		Value(1)
Balance, December 31, 2020		5,689,363		$0.23	-	0.94	$	0.44
Expired		(1,453,855	)	0.39	-	0.51		0.40
Balance, June 30, 2021		4,235,508		$0.23	-	1.65	$	0.45	$	—
Balance, December 31, 2019		8,769,451		$0.23	–	0.94	$	0.42
Expired		(930,000	)	0.39	–	0.58		0.56
Balance, June 30, 2020		7,839,451		$0.23	–	1.65	$	0.41

(1) – Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021.

Non-Plan Options issued

Activity of our non-plan stock options issued for the six months ended June 30, 2021 and 2020 is as follows:

							Weighted
	Non-plan						average		Aggregate
	Options			Exercise			price per		Intrinsic
	outstanding			price per share			share		value(1)
Balance, December 31, 2020		20,749,583		$0.17	–	1.00	$	0.41
Granted		43,956			0.23			0.23
Balance, June 30, 2021		20,793,539		$0.17	–	1.00	$	0.41
Non-vested		(1,996,576	)	0.17	–	0.45		0.45
Vested, June 30, 2021		18,796,963		$0.17	–	1.00	$	0.41	$	28,000
Balance, December 31, 2019		19,604,107		$0.23	–	1.00	$	0.41
Granted		292,437		0.17	–	0.21		0.18
Balance, June 30, 2020		19,896,544		$0.17	–	1.00	$	0.41

(1) – Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021.

18

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

During the six months ended June 30, 2021, we issued an option to purchase 43,956 shares of our common stock at $0.23 per share to a vendor for services. The fair value of these options total $10,000 and is recorded in our selling, general and administrative expense.

During the six months ended June 30, 2020, we issued options to purchase 292,437 shares of our common stock at exercise prices ranging between $0.17 – $0.21 per share to vendors for fees for service. The fair value of the options issued totaled $50,000, is recorded in our selling, general and administrative expense.

Note 6. Warrants

We issued warrants to purchase our common stock, at various prices for the six months ended June 30, 2021 and 2020, is as follows:

							Weighted
							average		Aggregate
	Warrants			Exercise			price per		Intrinsic
	outstanding			price per share			share		value(1)
Balance, December 31, 2020		32,980,989		$0.16	–	1.00	$	0.29
Issued		7,088,094		0.14	–	0.26		0.20
Expired		(1,046,528	)	0.19	–	0.35		0.24
Balance, June 30, 2021		39,022,555		$0.14	–	1.00	$	0.27	$	140,000
Balance, December 31, 2019		43,231,161		$0.16	–	1.00	$	0.42
Issued		3,934,592		0.13	-	0.24		0.13
Expired		(14,272,820	)	0.40	-	0.49		0.30
Balance, June 30, 2020		32,892,933		$0.16	–	1.00	$	0.35

(1) Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021

Warrants issued in 2020 Unit Offering

During the six months ended June 30, 2021, pursuant to our 2020 Unit Offering (see Note 3), we issued six-month stock purchase warrants to purchase an aggregate 3,431,547 shares of our common stock at exercise prices between $0.14 – 0.21 per share, and five-year stock purchase warrants to purchase an aggregate 3,431,547 shares of our common stock at exercise prices between $0.18 – 0.24 per share.

Warrant issued in conjunction with amendment to note payable

On March 1, 2021, we and the holder of a $50,000 note payable modified the note (see Note 4). In lieu of interest during the extended period of the note, we issued the investor a warrant to purchase 225,000 shares of our common stock at $0.16 per share for a period of five years.  The fair value of these warrants totaled $35,000 and is recorded as a debt discount on our consolidated balance sheets, of which amount will be amortized to interest expense over the two-year term of the debt.

19

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Fair Value – Interest Expense

To determine interest expense related to our outstanding warrants issued in conjunction with debt offerings, the fair value of each award grant is estimated on the date of grant using the Black-Scholes option pricing model and the relative fair values are amortized over the life of the warrant. For the determination of expense of warrants issued for services, extinguishment of debt and settlement, management also uses the option-pricing model. The principal assumptions we used in applying this model were as follows:

	June 30, 2021				June 30, 2020
Risk free interest rate			0.71%				0.23%
Expected volatility			100%				112
Expected dividend yield			—				—
Forfeiture rate			—				—
Expected life in years		.5	–	5		0.33	–	5

The risk-free interest rate is based on U.S. Treasury yields in effect at the time of grant. Expected volatilities are based on historical volatility of our common stock. The expected life in years is based on the contract term of the warrant.

Note 7. Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses for our operations other than our partially-owned subsidiary Clyra Medical included the following (in thousands):

	June 30, 2021		December 31, 2020
Accounts payable and accrued expense	$	145	$	315
Accrued interest		25		42
Accrued payroll		161		156
Total accounts payable and accrued expenses	$	331	$	513

Accounts payable and accrued expenses includes ordinary business payables incurred by the Company and its operational subsidiaries. See Note 9, “Accounts Payable and Accrued Expenses”, for the accounts payable and accrued expenses of Clyra Medical.

Note 8. In-process Research and Development

On September 26, 2018, BioLargo and Clyra Medical entered into a transaction (the “Scion Transaction”) whereby BioLargo would acquire, and then license back to Clyra, the intangible assets of Scion Solutions, LLC (“Scion”), and in particular its in-process research and development of the “SkinDisc,” a method for treating advanced hard-to-treat wounds including diabetic ulcers. In addition to a pending patent application, the assets included the technical know-how and data developed by the Scion team.

Note 9. Noncontrolling Interest – Clyra Medical

As discussed in Note 2, we consolidate the operations of our partially owned subsidiary Clyra Medical, of which we owned 45% of its outstanding shares as of June 30, 2021.

Acquisition of In-process Research and Development

On September 26, 2018, Clyra Medical entered into a transaction with Scion Solutions, LLC, for the purchase of its intellectual property, including its SkinDisc. The consideration provided to Scion is subject to an escrow agreement (“Escrow Agreement”) and earn out provisions and includes: (i) 21,000 shares of the Clyra Medical common stock; (ii) 10,000 shares of Clyra Medical common stock redeemable for 7,142,858 BioLargo common shares (detailed below); and (iii) a promissory note in the principal amount of $1,250,000 to be paid through new capital investments and revenue, as detailed below. This consideration was initially held in escrow pending Clyra Medical raising $1 million “base capital” to fund its business operations.

On December 17, 2018, the parties entered into a closing agreement (“Closing Agreement”) reflecting the satisfaction of the obligation to raise $1 million “base capital”; at that time, one-half of the shares of Clyra Medical common stock exchanged for the Scion assets were released to Scion. The remaining Clyra Medical common shares remain subject to the Escrow Agreement’s performance metrics, each vesting one-fifth of the remaining shares of common stock: (a) notification of FDA premarket clearance of certain orthopedics products, or recognition by Clyra Medical of $100,000 gross revenue; (b) the recognition by Clyra Medical of $100,000 in aggregate gross revenue; (c) the granting of all or any part of the patent application for the SkinDisc product, or recognition by Clyra Medical of $500,000 in gross revenue; (d) recognition by Clyra Medical of $1 million in aggregate gross revenue; and (e) recognition by Clyra Medical of $2 million in gross revenue. As of June 30, 2021, a total of 9,300 shares remain in escrow, the difference having been vested in accordance with the performance metrics.

20

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Debt Obligations of Clyra Medical

Note Payable (Scion)

In conjunction with the transaction in which certain intellectual property was purchased from Scion, Clyra issued a promissory note to Scion in the principal amount of $1,250,000 on September 26, 2018 (“Clyra-Scion Note”), accruing interest at an annual rate of 5%. Clyra is obligated to make principal and interest payments periodically, based on a percent (25%) of investment proceeds, and 5% of revenues. Payments are due annually each June 26th until paid. At June 30, 2021 and December 31, 2020, the balance due on the Clyra Medical Note Payable totaled $1,007,000. On June 26, 2021, the maturity date of the note automatically extended by one year, to June 26, 2022.

Inventory Line of Credit

On June 30, 2020, Clyra entered into a one-year revolving Line of Credit Agreement whereby Vernal Bay Capital Group, LLC committed to provide a $1,000,000 inventory line of credit to Clyra.  Clyra has received $260,000 in draws since the inception of the line of credit.

Clyra is required to use funds from the line of credit to produce inventory. Additional draws are conditional upon Clyra presenting invoices or purchase orders to the lender equal to the greater of one-half of principal outstanding on the line of credit, and $200,000.  The line of credit note earns interest at 15%, matures in one year, and requires Clyra pay interest and principal from gross product sales. For the first 180 days, on a monthly basis, Clyra is required to pay 30% of gross product sales to reduce amounts owed, and thereafter 60% of gross sales. Clyra issued Vernal Bay 323 shares of its common stock as a commitment fee for the line of credit, valued at $70,000. A security agreement of the same date grants Vernal Bay a security interest in Clyra’s inventory, as that term is defined in the Uniform Commercial Code. Clyra may prepay the note at any time.

During the six months ended June 30, 2021, we made payments on the line of credit totaling $24,000. In April, 2021, Vernal agreed to extend the maturity date by one year, to June 30, 2022. Clyra agreed to make interest-only payments through August 31, 2021, and then, in addition to interest payments, principal payments equal to the greater of (i) $7,500 and (ii) 40% of product sales beginning September 2021, for six months, and thereafter the greater of (i) $7,500 and (ii) 60% of product sales.

As of June 30, 2021, the balance outstanding on this line of credit totals $200,000.

Prepaid Marketing - Consulting Agreement

On December 30, 2015, Clyra entered into a consulting agreement with Beach House Consulting, LLC, through which Jack B. Strommen will be providing consulting services to Clyra related to its sales and marketing activities, and in exchange receive $23,000 per month for a period of four years. On June 30, 2020, at Clyra’s request, Beach House Consulting agreed to accept 3,639 shares of Clyra common stock, in lieu of cash, as full prepayment of the consulting fee. The obligation to provide the consulting services is dependent on Clyra generating an average of $250,000 in monthly sales over three consecutive months, which has not been met. The value of the shares issued to Beach House totaled $788,000 and is recorded as a non-current asset (prepaid marketing) on our balance sheet.

Clyra Medical Equity transactions

As of June 30, 2021, Clyra Medical had the following common shares outstanding:

Shareholder	Shares		Percent
BioLargo, Inc.		49,207		45	%
Sanatio Capital		18,704		17	%
Scion Solutions(1)		21,700		20	%
Other		19,280		18	%
Total		108,891

The above amounts do not include an additional 9,300 shares held in escrow subject to performance metrics that have not been met.

21

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Sales of Common Shares

During the six months ended June 30, 2021 and 2020, Clyra raised $50,000 and $849,000 at $310 per Clyra share.

Stock Options

Clyra issues options to its employees and consultants in lieu of compensation owed on a regular basis. As of December 31, 2020, the Company had issued options to purchase 11,411 shares of Clyra stock. During the six months ended June 30, 2021 and 2020, Clyra issued options to purchase 1,248 and 1,945 shares of its common stock, respectively. Each option issued has an exercise price of $1.00 per share, are vested upon issuance and an expiration date 10 years from the date of grant. The fair value of the options issued in in the six months ended June 30, 2021 and 2020 totaled $263,000 and $441,000, respectively. We used the Black-Scholes model to calculate the initial fair value, assuming a stock price on date of grant of $310 per share. Because Clyra is a private company with no secondary market for its common stock, the resulting fair value was discounted by 30%.

Clyra Accounts Payable and Accrued Expenses

Clyra had the following accounts payable and accrued expenses as follows:

	June 30, 2021		December 31, 2020
Accounts payable and accrued expense	$	582	$	402
Accrued interest		127		32
Accrued payroll		51		102
Total Clyra Medical accounts payable and accrued expenses	$	760	$	536

Note 10. BioLargo Engineering, Science and Technologies, LLC

In September 2017, we commenced a full-service environmental engineering firm and formed a Tennessee entity named BioLargo Engineering, Science & Technologies, LLC (“BLEST”). In conjunction with the start of this subsidiary, we entered into a three-year office lease in the Knoxville, Tennessee area, and entered into employment agreements with six scientists and engineers. (See Note 11, “Business Segment Information”.) The company was capitalized with two classes of membership units: Class A, 100% owned by BioLargo, and Class B, held by management of BLEST, and which initially have no “profit interest,” as that term is defined in Tennessee law. However, over the succeeding five years, the Class B members can earn up to a 30% profit interest. They also have been granted options to purchase up to an aggregate 1,750,000 shares of BioLargo, Inc. common stock. The profit interest and option shares are subject to a five year vesting schedule tied to the performance of the subsidiary, including gross revenue targets that increase over time, obtaining positive cash flow by March 31, 2018 (which was not met), collecting 90% of its account receivables, obtaining a profit of 10% in its first year (and increasing in subsequent years), making progress in the scale-up and commercialization of our AOS system, and using BioLargo research scientists (such as our Canadian team) for billable work on client projects. These criteria are to be evaluated annually by BLEST’s compensation committee (which includes BioLargo’s president, CFO, and BLEST’s president), beginning September 2018. Given the significant performance criteria, the Class B units and the stock options will only be recognized in compensation expense if or when the criteria are satisfied.

The BLEST Compensation Committee has met regularly since the subsidiary commenced operations. In 2018, it reviewed the operating performance and determined that the performance metrics were not met and as a result, did not award any Class B units or stock options. In November 2019, it determined that a portion of the performance metrics were met, and that one-half of the eligible profits interests would be vested (2.5% in the aggregate), and therefore one-half of the option interests (10%) would be vested (175,000 options shares in the aggregate). The vesting of option shares resulted in a fair value totaling $44,000, recorded on our consolidated statement of operations as selling, general and administrative expense. The fair value of the profit interest was nominal and not booked. In January 2021, the committee again reviewed the operating performance and determined that a portion of the performance metrics were met. It was agreed that one-half and one-quarter of the eligible profits interests would be vested (3.75% in the aggregate), and therefore one-half of the option interests (15%) would be vested (262,500 options shares in the aggregate). The vesting of option shares resulted in a fair value totaling $65,000, recorded on our consolidated statement of operations as selling, general and administrative expense for the year ended December 31, 2020. No additional meetings or evaluations have taken place as of June 30, 2021.

22

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Note 11. Business Segment Information

BioLargo currently has four operating business segments, plus its corporate entity which is responsible for general corporate operations, including administrative functions, finance, human resources, marketing, legal, etc. The four operational business segments are:

1. ONM Environmental (formerly Odor-No-More) (“ONM”) -- which sells odor and volatile organic control products and services (located in Westminster, California);

2. Clyra Medical Technologies (“Clyra”) -- which develops and sells medical products based on our technologies, including Clyraguard Personal Protective Spray;

3. BLEST -- which provides professional engineering services on a time and materials basis for outside clients and supports our internal operations as needed (located in Oak Ridge, Tennessee); and

4. BioLargo Water (“Water”) -- which historically focused entirely on R&D, and has now shifted its focus to commercializing the AOS technology, developing manufacturing operations for hand sanitizers and supporting the development of iodine based disinfecting products for the company (located in Edmonton, Alberta Canada).

Historically, none of our operating business units have operated at a profit and therefore each required additional cash to meet its monthly expenses. The additional sources of the cash to fund the shortfall from operations of ONM, BLEST and BioLargo Water have been provided by BioLargo’s sales of debt or equity, research grants, and tax credits. Clyra Medical has been funded by third party investors who invest directly in Clyra Medical in exchange for equity ownership in that entity.

23

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

The segment information for the three and six months ended June 30, 2021 and 2020, is as follows (in thousands):

	Three months ended June 30,						Six months ended June 30,
	2021			2020			2021			2020
Revenue
BioLargo corporate	$	—		$	—		$	7		$	—
ONM		318			299			638			596
BLEST		266			160			654			444
Water		—			—			9			—
Clyra Medical		—			21			114			21
Intersegment revenue		(120	)		(62	)		(387	)		(205	)
Total	$	464		$	418		$	1,035		$	856
Operating loss
BioLargo corporate	$	(937	)	$	(1,129	)	$	(1,860	)	$	(1,936	)
ONM		(107	)		(134	)		(283	)		(287	)
Clyra Medical		(300	)		(422	)		(739	)		(728	)
BLEST		(190	)		(124	)		(373	)		(331	)
Water		(168	)		(196	)		(305	)		(424	)
Total	$	(1,702	)	$	(2,005	)	$	(3,560	)	$	(3,706	)
Interest expense
BioLargo corporate	$	(51	)	$	(735	)	$	(106	)	$	(1,479	)
Clyra Medical		(38	)		(12	)		(76	)		(25	)
Total	$	(89	)	$	(747	)	$	(182	)	$	(1,504	)
Research and development expense
BioLargo corporate	$	(209	)	$	(119	)	$	(545	)	$	(321	)
Clyra Medical		(6	)		(47	)		(33	)		(61	)
BLEST		(123	)		(85	)		(228	)		(166	)
Water		(138	)		(137	)		(257	)		(317	)
Intersegment R&D		120			38			380			181
Total	$	(356	)	$	(350	)	$	(683	)	$	(684	)

The segment asset information for June 30, 2021 and December 31, 2020, is as follows (in thousands):

As June 30, 2021	BioLargo		ONM		Clyra		BLEST		Water		Elimination			Total
Tangible assets	$	1,072	$	431	$	1,016	$	321	$	151	$	(47	)	$	2,944
Right of use		185		—		—		126		—		—			311
Investment in South Korean joint venture		40		—		—		—		—		—			40
Intangible assets		2,150		—		—		—		—		—			2,150

As of December 31, 2020	BioLargo		ONM		Clyra		BLEST		Water		Elimination			Total
Tangible assets	$	603	$	624	$	1,125	$	314	$	105	$	(42	)	$	2,388
Right of use		215		—		—		126		—		—			341
Investment in South Korean joint venture		63		—		—		—		—		—			63
Intangible assets		2,150		—		—		—		—		—			2,150

24

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Note 12. Commitments and Contingencies

Office Leases

We have long-term operating leases for office, industrial and laboratory space in Westminster, California, Oak Ridge, Tennessee, and Alberta, Canada. Payments made under operating leases are charged to the Consolidated Statement of Operations and Comprehensive Loss on a straight-line basis over the term of the operating lease agreement. For the six months ended June 30, 2021 and 2020, rental expense was $113,000 and $114,000, respectively.  As of June 30, 2021, our weighted average remaining lease term is three years and the total remaining operating lease payments is $434,000.

On January 1, 2019, we adopted ASC 842 which resulted in a right-of-use asset and lease liability. Short-term leases are not included in our analysis. The adoption resulted in an immaterial cumulative effect of an accounting change that was not recorded.  The lease of our Westminster facility qualifies for the new treatment; it originated in August 2016, was originally scheduled to expire August 2020, contains a yearly escalation of 3%, and includes a four-year renewal option whereby the base rent is adjusted to then market value. During 2020, we exercised our option to extend the lease for four years. It is too early for management to determine if it will extend another four years, therefore the additional four-year extension is not included in the analysis. The lease of our Oak Ridge, Tennessee facility also qualifies, and it had one three-year extension to September 2022, and has one renewal option for another five years where the rental rate would adjust to greater of the current price and fair market value. No determination has been made whether to exercise the five-year renewal option for the Oak Ridge facility. The lease of our Canadian facility is less than one year. None of our leases have additional terms related to the payments or mechanics of the lease. The leases have no additional payment terms such as common area maintenance payments, tax sharing payments or other allocable expenses. Likewise, the leases do not contain other terms and conditions of use, such as variable lease payments, residual value guaranties or other restrictive financial terms. Since there is no explicit interest rate in our leases, management used its incremental borrowing rate, which is estimated to be 18% to determine lease liability.

Note 13. Subsequent Events.

Management has evaluated subsequent events through the date of the filing of this Annual Report and management noted the following for disclosure.

Sales to Lincoln Park

From July 1, 2021, through August 9, 2021, we sold 884,391shares of our common stock to Lincoln Park (see Note 3), and received $164,000 in gross and net proceeds.

Unit Offering Investment

From July 1, 2021, through August 12, 2021, we received one investment in our 2020 Unit Offering (see Note 3) of $70,000 and issued 388,889 shares of common stock, a six-month warrant to purchase 388,889 shares of common stock at $0.216 per share, and a five-year warrant to purchase 388,889 shares of common stock at $0.27 per share.

25

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

This quarterly report on Form 10-Q contains forward-looking statements. These forward-looking statements involve risks and uncertainties, including statements regarding BioLargo’s capital needs, business plans and expectations. Such forward-looking statements involve risks and uncertainties regarding BioLargo’s ability to carry out its planned development and production of products. Forward-looking statements are made, without limitation, in relation to BioLargo’s operating plans, BioLargo’s liquidity and financial condition, availability of funds, operating and exploration costs and the market in which BioLargo competes. Any statements contained herein that are not statements of historical facts may be deemed to be forward-looking statements. In some cases, you can identify forward-looking statements by terminology such as “may”, “will”, “should”, “expect”, “plan”, “intend”, “anticipate”, “believe”, “estimate”, “predict”, “potential” or “continue”, the negative of such terms or other comparable terminology. Actual events or results may differ materially. In evaluating these statements, you should consider various factors, including the risks outlined in our Form most recent annual report on Form 10-K, and, from time to time, in other reports BioLargo files with the SEC. These factors may cause BioLargo’s actual results to differ materially from any forward-looking statement. BioLargo disclaims any obligation to publicly update these statements, or disclose any difference between its actual results and those reflected in these statements. The information constitutes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Given these uncertainties, readers are cautioned not to place undue reliance on such forward-looking statements.

Unless otherwise expressly stated herein, all statements, including forward-looking statements, set forth in this Form 10-Q are as of June 30, 2021, unless expressly stated otherwise, and we undertake no duty to update this information.

As used in this report, “we” and “Company” refers to (i) BioLargo, Inc., a Delaware corporation; (ii) its wholly-owned subsidiaries BioLargo Life Technologies, Inc., a California corporation, ONM Environmental, Inc., a California corporation, BioLargo Water Investment Group, Inc., a California corporation (which wholly owns BioLargo Water, Inc., a Canadian corporation), and BioLargo Development Corp., a California corporation, (iii) its majority-owned subsidiary BioLargo Engineering, Science & Technologies, LLC, a Tennessee limited liability company, and Canadian subsidiary BioLargo Water, Inc.; and (iv) Clyra Medical Technologies, Inc. (“Clyra”), a partially owned subsidiary.

The following discussion and analysis should be read in conjunction with our unaudited consolidated financial statements and the related notes to the consolidated financial statements included elsewhere in this report.

Our Business - Innovator and Solution Provider

BioLargo, Inc. invents, develops, and commercializes innovative platform technologies to solve challenging environmental problems like PFAS contamination, advanced water and wastewater treatment, industrial odor and VOC control, air quality control, and infection control. With over thirteen years of extensive research and development, BioLargo holds a wide array of issued patents, maintains a robust pipeline of products, and provides full-service environmental engineering. We invent or acquire novel technologies and develop them to maturity through our operating subsidiaries using cutting-edge scientific and engineering methodologies. With a keen emphasis on partnerships with academic, government, and commercial organizations and associations, BioLargo has proven itself with over 80 awarded grants and numerous pilot projects. We monetize through direct sales, recurring service contracts, licensing agreements, strategic joint venture formation and/or the sale of the intellectual property.

In the last year, we developed and refined new technologies that are now ready for commercial trials (see Development of AEC to Combat PFAS Crisis, and New Technology – Mineral Extraction), formalized strategic relationships to expand sales and revenues (see South Korean Joint Venture, and Full Service Environmental Engineering), arranged for demonstration pilot projects for our AOS water treatment system (see Sunworks Farm Pilot and Municipal Wastewater Treatment Pilot – Montreal), increased revenues, including those of our flagship product, CupriDyne Clean (see Results of Operations), and began the process to register our CupriDyne technology with the EPA to make advanced sanitization and disinfection claims, all the while we and the world struggled through the challenges presented by the COVID-19 pandemic.

Formula for Success: Technology, Talent and Purpose

Technology

The Company has continually advanced its robust portfolio of technologies since the first acquisition of early iterations of the BioLargo technology in the spring of 2007. Our innovations have primarily been developed through the company’s internal resources, and some through acquisition. These include patents, patents pending and trade secrets that include solutions for:

● Water decontamination, including:

26

o Removal of per- and poly-fluoroalkyl substances (PFAS) from drinking and ground water

o Micro-pollutant destruction and removal

o Legionella detection and water treatment solutions

● Air quality controls and systems including odor and VOC control

● Mineral processing

● Infection control

● Wound management

● Regenerative tissue therapy

● Disinfection

Talent

We have steadily grown our team to 27 team members and numerous other part-time consultants, including highly qualified PhDs, engineers, MDs and medical professionals, construction professionals, field service technicians, innovators, sales marketing specialists, entrepreneurial and executive leadership.

Purpose

Our mission to make life better drives us to serve others with integrity, knowledge, technology, and solutions that protect the environment, improve quality of life, and protect lives. All our technologies were developed from the ground-up to be sustainable, practical solutions to significant global challenges. We are unique in our ability to tailor our offerings to serve our customers with proven expertise, proven technology and, if needed, we often have the ability to develop new technical solutions to meet our customer’s needs.

Development of AEC to Combat PFAS Crisis

Our engineers at BLEST have developed a novel water treatment system, called the AEC (Aqueous Electrostatic Concentrator), that removes per- and poly-fluoroalkyl substances (PFAS) from water at a fraction of the cost of the most commonly used solutions (carbon filtration and reverse osmosis). PFAS chemicals can cause cancer, infertility, asthma, and other health problems in human beings, are present in a vast range of manufactured goods, common household products (e.g., cleaning products, cookware), and electronics, and contaminate drinking water in unsafe levels all over the globe. PFAS water contamination is a significant problem worldwide. In the United States, PFAS chemicals have been estimated to be present in the blood of 98% of the population and have been linked to a plethora of health problems including high cholesterol, liver dysfunction, immune disorders and various cancers. Thousands of communities so far in the U.S. have been proven to be affected by PFAS water contamination. In Orange County, California, where our corporate offices are located, more than 40 drinking water wells have been taken out of service due to PFAS contamination, and county officials estimate that treating the wells using existing technologies will cost more than $200 million in capital costs and more than $400 million in maintenance and operating costs, with a total cost over 30 years of nearly $1 billion. Operational costs include the cost to dispose of PFAS laden filters. Our technology significantly reduces these costs, as it concentrates the PFAS chemicals into smaller areas resulting in lower disposal costs.

Governments and industry are actively seeking less expensive technologies and processes to eliminate PFAS from groundwater and drinking water. The U.S. Environmental Protection Agency (“EPA”) has made finding an economical solution a priority, announcing in February 2021 final regulatory determinations on the safe maximum levels of PFAS in drinking water, paving the way for regulating the chemicals through the Safe Drinking Water Act and creating a regulatory environment where municipalities will be required to install technologies that help remove PFAS from their drinking water supplies prior to distribution. In March 2021, a bipartisan group in the House of Representatives introduced a bill to regulate PFAS titled the PFAS Action Act of 2021; on July 21, 2021, the House passed the bill and sent it to the Senate for consideration. As passed by the House, the proposed legislation would establish a national drinking water standard for select PFAS chemicals under the Safe Drinking Water Act, designate them as hazardous chemicals (allowing the EPA to clean up contaminated sites and creating stricter rules for handling them under CERCLA), limit industrial discharges under the Clean Water Act, and provide $200 million annually to assist water utilities and treatment facilities to remove PFAS chemicals from their water. The bill would also restrict incineration of PFAS-containing wastes under the Clean Air Act, which could significantly limit the use of the most common treatment strategy: carbon filtration followed by carbon incineration. When PFAS-laden carbon is incinerated, not only does it produce vast volumes of greenhouse gases such as carbon dioxide, but new evidence suggests volatile fluorochemicals like carbon tetrafluoride, hexafluoroethane, and hydrogen fluoride are released into the air which may have serious human health impacts on adjacent communities. As our technology significantly reduces the amount of material that has to be disposed, it can be disposed of economically in ways other than incineration, and when it is incinerated, it is incinerated in a fraction of the volume of carbon filtration equivalents.

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In July 2021, two potential clients (a major municipality in Southern California and a federal government agency) sent us PFAS-contaminated water samples to be treated by our AEC water treatment system. This is the first step of BioLargo’s multi-phased commercial approach: (1) off-site treatment of client supplied water, (2) on-site pilot treatment at client location, and (3) full-scale operation. In this first step, our engineers receive contaminated water from the client, evaluate it for operational optimization, treat the water removing the PFAS chemicals, and then have an independent laboratory analyze the treated water to confirm the PFAS has been removed to client specifications. In essence, it is a “proof of concept” phase to give the client confidence before moving to on-site treatment. Assuming a successful first phase, these agencies have asked for proposals for on-site piloting to confirm treatment success at a larger scale at the client location. Once piloting is complete, BioLargo would offer customized commercial-scale systems to each client.

There are three main markets for PFAS water treatment in the U.S., each of which we intend to address in the coming years. The first is municipal water treatment – that is water which needs treatment for PFAS before it can be distributed to the public or water that must be treated from a wastewater treatment plant. Southern California, Michigan and Wisconsin may be hotbeds for this market, as the states have adopted stringent regulations on PFAS limits in drinking water and wastewater, and significant initiatives have begun to implement systems to address the problem. The second market is military bases, where the use of PFAS-containing fire-fighting foam has contaminated the soil and groundwater. These sites are numerous and have significant groundwater and soil contamination problems which regulators are likely to require remediation for in the coming years. The third market is treatment for water intake or outfalls of industrial facilities that use PFAS compounds in manufacturing and other industrial processes. Our first pilot projects are in municipal water treatment. As our engineers are already providing environmental engineering services on U.S. Air Force bases, we believe that work may lead to sales in that arena. While the AEC is designed to efficiently remove and collect PFAS to allow for efficient disposal, our engineers have also conceived of a number of techniques to provide efficient destruction of concentrated PFAS and the membrane collection systems involved in the AEC system. Estimates for the size of the overall PFAS water treatment market vary wildly, due largely to the fact that it is an emerging market, but some estimates place its size over the next ten years between $3 billion per year and $80 billion per year.

ONM Environmental - Industrial Odor and VOC Solutions

In 2020, we changed the name of our odor control subsidiary Odor-No-More, Inc., to ONM Environmental, Inc., to reflect the expansion of its work from odor control product sales to more robust environmental services. Its flagship product, CupriDyne® Clean, reduces and eliminates tough odors and volatile organic compounds (“VOCs”) in various industrial settings. CupriDyne Clean is delivered through misting systems, sprayers, water trucks and similar water delivery systems designed, manufactured and installed by ONM. We believe the product is the number-one performing odor-control product in the market, and that it offers substantial savings to our customers compared with competing products. In response to customer demand for expanded services, ONM now holds General, Electrical, Plumbing and Low Voltage contractor licenses issued by the California Contractors State License Board, and offers a menu of services to landfills, transfer stations, wastewater treatment facilities as well as facilities in non-waste related industries. These services include engineering design, construction, installation, ongoing maintenance and on-site support services to assist our clients in the implementation and continued use of the various systems that deliver our liquid products in the field (such as misting systems).

ONM Environmental offers a deodorizing and sanitizing technology, called EcoMist®, that is installed directly onto waste collection vehicles and automatically sprays odor control products and/or sanitizer into refuse bins or dumpsters during the waste collection process. Since acquiring this product in late 2020, ONM has been upgrading the product prepositioning it, and creating marketing collateral readying for launch. A video showing EcoMist® in operation can be viewed here: https://www.biolargo.com/ecomist-video. EcoMist® is an “out-of-the-box” product, allowing customers to install the system themselves, and will thus not require a significant investment in logistics and servicing to support sales.

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Cannabis Industry

Our CupriDyne Clean product is sold to the Cannabis industry under a private-label brand through a third party, Mabre Systems. Testing shows that CupriDyne Clean eliminates the odors emitted by Cannabis grow and production facilities. Sales to the industry were severely impacted by the pandemic, and we expect and hope that sales will increase this fiscal year.

South Korean Joint Venture

On February 12, 2020, we executed a “Joint Venture Framework Agreement” with a leading wastewater treatment solution provider based in South Korea (BKT Co. Ltd., “BKT”), to create a South Korean entity that would manufacture odor and VOC control products based on our CupriDyne Clean products. We own 40% of the joint venture. Although the joint venture established manufacturing and is marketing the product, the pandemic significantly impacted the expected growth of the company. In late 2020, the joint venture (under the name Odin) established corporate offices at the Korea Water Cluster, which is a new world-renowned water innovation campus located in Daegu, South Korea, a center for industrial innovation in Asia. The move positions Odin well to interface with other innovators in the water treatment sector as well as with industry leaders who may need Odin’s products for air quality control.

Full Service Environmental Engineering

Our subsidiary BioLargo Engineering, Science & Technologies, LLC (“BLEST”) offers full service environmental engineering to third parties and provides engineering support services to our internal teams to accelerate the commercialization of our technologies. Its website is found at www.BioLargoEngineering.com.

BLEST focuses its efforts in three areas:

● providing engineering services to third-party clients

● supporting internal product development and business units’ services to customers (e.g., the AOS); and

● advancing their own technical innovations such as the AEC PFAS treatment technology 

The subsidiary is located in Oak Ridge (a suburb of Knoxville, Tennessee), and employs seven scientists and engineers who collectively worked together for almost 30 years and experience in diverse engineering fields, as well as multiple independent engineers. The team is led by Randall Moore, who served as Manager of Operations for Consulting and Engineering for the Knoxville office of CB&I Environmental & Infrastructure and was formerly a leader at The Shaw Group, Inc., a Fortune 500 global engineering firm. The other team members are also former employees of CB&I and Shaw. The team is highly experienced across multiple industries and they are considered experts in their respective fields, including chemical engineering, wastewater treatment (including design, operations, data gathering and data evaluation), process safety, energy efficiency, air pollution, design and control, technology evaluation, technology integration, air quality management & testing, engineering management, permitting, industrial hygiene, applied research and development, air testing, environmental permitting, HAZOP review, chemical processing, thermal design, computational fluid dynamics, mechanical engineering, mechanical design, NEPDES permitting, RCRA/TSCA compliance and permitting,  project management, storm water design & permitting, computer assisted design (CAD), bench chemistry, continuous emission monitoring system operator, data handling and evaluation and decommissioning and decontamination of radiological and chemical contaminated facilities. The engineering team also has developed an extended network of trusted engineering subcontractors that assist in serving specific client projects as needed, from time to time.

BLEST has partnered with Garratt-Callahan, a national industrial water treatment company, to develop and then sell custom wastewater treatment equipment to recycle water from commercial facilities. Garratt-Callahan plans to launch commercial sales of the new systems in late 2021 or early 2022. BLEST will serve as the manufacturing partner and Garratt Callahan will serve as the selling distributor to leverage their national sales force and over one hundred years of providing services and products to customers. BLEST is also working with Garratt Callahan to expand sales of other BioLargo products. While early, the parties are working closely together and have successfully sold other BioLargo products to customers within the Garratt Callahan network of customers.

In the second quarter of 2021, BLEST was notified of several important contract awards of significance that have the potential to increase the company’s operating cash flow and support the subsidiary’s role of commercializing BioLargo’s patented technologies. The new contract wins are for work with 1) a resin manufacturing facility, 2) a dairy farm, 3) a new project at Picatinny Arsenal, one of the company’s long-time customers, 4) a potato processing plant, and 5) a US Air Force base, adding to the other seven bases already served by the company. Together, the new contracts are worth more than $1.2 million in revenue, most of which will be earned over the next six months.

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New Technology – Mineral Extraction

At the request of a client, BLEST developed a proprietary and patent-pending process to extract valuable minerals from certain types of industrial waste. As a result of this invention, the client is planning a substantial long-term project expected to generate for the client over $1B in revenues, while avoiding expensive soil remediation costs. We are in negotiations to take the lead as project engineer/operator. We believe there are multiple similarly situated industrial waste sites across the country and around the world that would benefit from our newly developed process, and, as resources permit, we intend to explore these opportunities.

BioLargo Water and the Advanced Oxidation System – AOS

BioLargo Water is our wholly owned subsidiary located on campus at the University of Alberta, Edmonton, Canada, that developed and is commercializing our Advanced Oxidation System (AOS).  The AOS is our patented water treatment device that generates a series of highly oxidative species of iodine and other molecules that, because of its proprietary configuration and inner constituents, allow it to eliminate pathogenic organisms and organic contaminants as water passes through the device. The key value proposition of the AOS is its ability to eliminate a wide variety of contaminants with high performance while consuming extremely low levels of input electricity and extremely low levels of chemistry inputs – a trait made possible by the complex set of highly oxidative iodine compounds generated within the AOS reactor. Our proof-of-concept studies and case studies have generated results that project the AOS will be more cost- and energy-efficient than commonly used advanced water treatment technologies such as UV, electro-chlorination, and ozonation. This value proposition may enable advanced water treatment in applications where it otherwise would have been prohibitively costly, especially where energy efficiency is a key driver for buying decisions. Secondly, the AOS has been proven effective against certain soluble organic molecules, pharmaceuticals and a host of other micropollutants which are difficult to treat with other conventional tertiary water treatment technologies like UV. This characteristic of the AOS may offer a significant incentive for prospective customers to choose this technology over established incumbents because of the need in certain contexts to address these hard-to-treat contaminants, in addition to traditional targets of tertiary treatment like microorganisms.

BioLargo’s AOS water treatment technology has completed several pre-commercial demonstration pilots, including one at a poultry farm in Alberta, one at a microbrewery in Southern California, and another in Southern California where stormwater was treated by the AOS. It has an ongoing pilot near Montreal to treat municipal wastewater. Presently, we are working to plan the first commercial trials for the AOS technology, starting with Sunworks Farm (read more below). The company plans to secure additional agreements for commercial trials with suitable early-adopter industrial and agricultural wastewater treatment customers in 2021 as part of its plan to directly market the technology for its first revenue-generating projects.

Capabilities and characteristics of the BioLargo AOS have been published in peer-reviewed academic papers. In early 2021, the laboratory of Dr. Greg Goss, one of the company’s academic partners, published a paper about the technology’s ability to effectively remove micropollutants from wastewater and abrogate the negative biological effects of those micropollutants on aquatic life. The paper concluded that he AOS is “a promising and environmentally friendly technology for wastewater treatment, remediation, and management”. In June of 2021, the laboratory of Dr. Kimura-Hara published a paper about the safety of water treated by the AOS, specifically with regards to the low levels of disinfection by-products (DBPs) generated by the technology. The paper concluded that the levels of DBPs generated by the AOS were comparable to those found in ordinary tap water. The company is actively working to publish additional peer-reviewed scientific papers, as these are crucial tools in marketing emerging water treatment technologies and aid decision-makers at customer and partner organizations in recognizing the technical and scientific merits of the technology relative to incumbents in the field.

Sunworks Farm Pilot

We are continuing our efforts to establish our first commercial pilot for the AOS system at a poultry and livestock farm in Alberta, Canada. Our plans to have installed a fully functional treatment train featuring our AOS water system at the client’s farm in the third quarter of 2021 have been delayed by the ongoing Canadian pandemic lockdowns and negotiations to finalize the project scope and confirm financing from the government agencies. When complete, the system will be the first of its kind to allow for the complete reuse of this industrial wastewater, and, provided we obtain the appropriate government regulatory permissions, will allow the client to significantly save on water costs and expand production. We expect the project to set a precedent for the AOS and BioLargo’s total water treatment solutions for future customers seeking water reuse, or even “zero liquid discharge” systems, and we believe will lead to follow-up projects with customers who follow Sunworks’ example.

Municipal Wastewater Treatment Pilot - Montreal

BioLargo Water has commenced a second commercial-scale AOS demonstration pilot, which was installed at a municipal wastewater treatment facility near Montreal, Quebec, that is being run in partnership with acclaimed water experts at the Centre des Technologies de L’Eau (CTE). The purpose of the project is to assess the AOS (and eventually, an AEC unit to be added on to the treatment train) as effective, cost-efficient, and complementary solutions for disinfecting and eliminating a broad range of recalcitrant contaminants from municipal wastewater in an operating wastewater treatment plant. Our engineers have been working onsite to refine the treatment operations and have begun testing treated water. It is our belief that once these pre-commercial pilots have concluded with the AOS, our ability to entice major water industry players to partner with BioLargo Water to accelerate market adoption of the AOS will be increased dramatically.

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Clyra Medical Technologies

Clyra Medical Technologies, Inc. is our partially owned subsidiary creating medical products based on our technology. 

Clyra is launching a prescription-only product to be used by orthopedic surgeons to reduce infections in knee and hip replacement surgeries. Its other product designs are on hold until such time as it is able to secure the capital and resources to complete any final development and support additional inventory, technical support and sales for these products.

EPA Registration of CupriDyne Plus

We are actively working to obtain an EPA registration for CupriDyne Plus for a number of different applications. CupriDyne Plus has the potential to offer a safer, more environmentally friendly alternative to bleach and other common antimicrobials for applications like hard surface disinfection, sanitization of non-porous non-food contact surfaces, disinfection of air, textiles, and more. Our scientists have conducted many of the tests required for EPA registration. Based on our extensive work, we are confident it meets the minimum performance requirements required for EPA registration as a disinfectant and/or surface sanitizer. We have met with and presented data to officials at the EPA for the purpose of refining our product and determining additional data requirements, and have retained a firm specializing in EPA registration work to help us through the process. Our efforts with the EPA have been slower than expected as government agencies catch up on pandemic related work backlogs. While we are not able to predict the results of any EPA application we submit, or the time it will take to complete the process, we believe the market opportunities are large, with the U.S. market for surface disinfectants at more than $1 billion annually.

In Summary

BioLargo has advanced its technologies and infrastructure to achieve a critical mass to capitalize on its commercial efforts and have a positive impact around the world with clean water, clean air, and infection control solutions. The company presents a scalable business model that targets high impact cleantech market opportunities. We leverage our considerable scientific, engineering, and entrepreneurial talent to monetize our technologies and ensure high-quality customer service and increased revenue potential. We seek to unlock the value of our portfolio of disruptive technologies to advance our mission to “make life better” and continue creating shareholder value.

With the retirement of the bulk of our convertible debt over the past year, and as we continue to achieve new technical and business accomplishments, we are experiencing a swell in customer awareness and market acceptance of our special skills to serve customers.

Our revenue and commercial opportunities are extensive, important and expanding. We offer services through our team of highly qualified specialists in engineering, science and general contractor and construction and maintenance teams. We leverage those efforts with top performing products like our CupriDyne based products, the AOS, the AEC and more. We continue to expand our distribution and sales tools through partnerships like BKT/Odin and Garratt-Callahan. We leverage the combination of talent and products through engagement by and through our professional engineering services company to bid and win projects. We are expanding our technology portfolio through organic innovation, collaborations and through acquisition.

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Results of Operations

We operate our business in distinct business segments:

● ONM Environmental, which manufactures and sells our odor and VOC control products and services, including our flagship product, CupriDyne Clean;

● BLEST, our professional engineering services division supporting our internal business units and serving outside clients on a fee for service and/or project bid basis;

● BioLargo Water, our Canadian division that has been historically pure research and development, and is now transitioning to focus on commercializing our AOS system;

● Clyra Medical, our partially owned subsidiary focused on the medical device industry; and

● Our corporate operations, which support the operating segments with legal, accounting, human resources, and other services.

Our revenue increased for the three and six months ended June 30, 2021 by 11% and 20% as compared to the prior year periods.

Due to an 88% decrease in interest expense as a result of payment and conversion to equity of debt instruments in the past twelve months, our net loss for the three and six months ended June 30, 2021, decreased by 34% and 31% as compared to the prior year periods.

ONM Environmental

Our wholly owned subsidiary ONM Environmental generated revenues through sales of its flagship product CupriDyne Clean, and by providing design, installation, and maintenance services on the systems that deliver CupriDyne Clean at its clients’ facilities.

Revenue (ONM Environmental)

ONM Environmental’s revenue increased for the three and six months ended June 30, 2021 by 6% and 7% as compared to the prior year periods.  Substantially all of its revenue is from sales of CupriDyne Clean products and related system installations. The COVID-19 pandemic continues to impact sales, as it remains more difficult to meet face-to-face with potential clients, and, as the pandemic has disrupted operations of businesses in general, landfill and refuse transfer station operators are less concerned about odor emissions than they were pre-pandemic. We do not know if these two trends will continue, and whether our sales into the waste management industry will reclaim their upward trend. During 2021, ONM Environmental has invested considerable time and resources working with a number of distributors and resellers in preparation of the launch of consumer products.  While these have not yet generated meaningful revenues, our third-party partners are working diligently to professionally launch consumer products over the next few months. ONM has and continues to earn a reputation for quality and service for its construction, misting system design, installation and service capabilities resulting in an expanding opportunity to work by and through existing engineering services companies throughout the waste handling and public works industries.

Cost of Goods Sold (ONM Environmental)

ONM Environmental’s cost of goods sold includes costs of raw materials, contract manufacturing, and portions of salaries and expenses related to the manufacturing of our products. As a percentage of revenue, ONM Environmental’s costs of goods was 47% and 51% in the three and six months ended June 30, 2021, versus 38% and 40% in the same periods in 2020. The increase in cost of goods was due to new government-sector clients and jobs on which we are required to pay higher (so-called “prevailing”) wages to our employees resulting in increased labor charges.

Net Loss (ONM Environmental)

For the three and six months ended June 30, 2021, ONM Environmental generated $318,000 and $638,000 in revenue, a gross margin of $167,000 and $311,000, and had total costs and expenses of $275,000 and $596,000, resulting in a net loss of $108,000 and $285,000.

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For the three and six months ended June 30, 2020, ONM Environmental generated $299,000 and $596,000 in revenue, a gross margin of $186,000 and $354,000, and had total costs and expenses of $321,000 and $641,000, resulting in a net loss of $135,000 and $279,000.

BLEST (engineering division)

Revenue (BLEST)

Our engineering segment (BLEST) generated $146,000 and $274,000 of revenues from third party clients in the three and six months ended June 30, 2021, versus $119,000 and $260,000 in revenue in comparable periods in 2020.  BLEST revenues reported on our consolidated statement of operations do not include work performed on internal BioLargo projects, such as its further engineering and development of the AOS water filtration system, development of the AEC to combat the PFAS crisis (see “Development of AEC to Combat PFAS Crisis” above), and other new innovations which are largely attributable to research and development expense. The increase in third party revenues is due the addition of new contracts. BLEST has recently secured $1,200,000 in new contracts for services. To service these contracts, it will be required to hire more staff to meet the expanding demands. We do not believe the segment will begin generating a profit until it discontinues performing research and development work on behalf of BioLargo or BioLargo's operating units, or until it begins commercial sales of its innovations like the AEC or other water treatment products. 

Cost of Goods (Services) Sold (BLEST)

BLEST’s cost of services includes employee labor as well as subcontracted labor costs. In the three and six months ended June 30, 2021, its cost of services were 71% and 76% of its revenues, versus 77% and 80% cost of services in comparable periods in 2020. These fluctuations are a result of increases in efficiencies related to flat-fee monthly contracts.

Net Loss (BLEST)

For the three and six months ended June 30, 2021, BLEST generated $146,000 and $274,000 in revenue from third party clients, with a gross margin of $42,000 and $65,000, and had total costs and expenses of $234,000 and $438,000, resulting in a net loss of $192,000 and $373,000.

For the three and six months ended June 30, 2020, BLEST generated $120,000 and $280,000 in revenue, a gross margin of $27,000 and $56,000, and had total costs and expenses of $193,000 and $387,000, resulting in a net loss of $166,000 and $331,000.

Other Income

Our wholly owned Canadian subsidiary has been awarded more than 80 research grants over the years from various Canadian public and private agencies, including the Canadian National Research Institute – Industrial Research Assistance Program (NRC-IRAP), the National Science and Engineering Research Council of Canada (NSERC), and the Metropolitan Water District of Southern California’s Innovative Conservation Program “ICP”. The research grants received are considered reimbursement grants related to costs we incur and therefore are included as Other Income. We continued to win grants and it is important to note that amounts paid directly to third parties are not included as income in our financial statements.

Although we are continuing to apply for government and industry grants, and indications from the various grant agencies is highly encouraging, we cannot be certain of continuing those successes in the future.

Selling, General and Administrative Expense – consolidated

Our SG&A expenses include both cash expenses and non-cash expenses (including non-cash stock option compensation expenses). Our SG&A expenses decreased by 17% ($325,000) and decreased by 3% ($107,000) in the three and six months ended June 30, 2021, compared to the same periods in 2020. Our non-cash expenses totaled $1,314,000 in the six months ended June 30, 2021, compared to $3,090,000 in the six months ended June 30, 2020. Our employees, vendors and consultants chose to receive a greater number of stock and stock options in lieu of cash owed, a pandemic bonus was issued in stock options and as part of an employee retention program in 2020. The largest components of our SG&A expenses included (in thousands):

	Three months ended:				Six months ended:
	June 30, 2021		June 30, 2020		June 30, 2021		June 30, 2020
Salaries and payroll related	$	628	$	726	$	1,360	$	1,274
Professional fees		188		244		356		472
Consulting		212		396		615		684
Office expense		308		300		590		584
Sales and marketing		81		58		159		136
Investor relations		61		68		96		104
Board of director expense		69		63		134		130

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The increase in salaries and payroll expenses in the six months ended June 30, 2021 versus 2020 is primarily related to the implementation of a stock option bonus compensation program for employees and other related stock option compensation expenses, and also the hiring of additional personnel to support increasing operations. The decline in the three months ended June 30, 2021 versus 2020 is consistent with reduced stock option grants to employees. Consulting expense decreased as we have reduced the use of consultants to identify business opportunities. The reduction in professional fees is largely due to the reduced use of outside legal counsel and other service providers.

Research and Development

In the three months and six months ended June 30, 2021, we spent $356,000 and $683,000 in the research and development of our technologies and products. This was consistent with the comparable periods in 2020.

Interest expense

Our interest expense for the three and six months ended June 30, 2021, was $89,000 and $182,000, a decrease of 88% compared with the same periods of 2020. Our interest expense includes interest from outstanding debt and it is related to the issuance of and modification of convertible promissory notes. Since March 31, 2020, we converted or paid almost $5,000,000 of debt. As such, we continue to expect our interest expense to be significantly lower in each quarterly period of the year ending December 31, 2021, as compared with the same periods in 2020.

Loss on extinguishment of debt

In the three months ended March 31, 2020, we recorded a loss on extinguishment of debt related to transactions with current vendor and employees where Clyra Medical is unable to pay obligations in cash. In lieu of cash, the vendors and employees accepted options to purchase shares of Clyra stock. The fair value of those options exceeded the debt that was converted by $214,000.

Net Loss

Net loss for the three and six months ended June 30, 2021, was $1,790,000 and $3,668,000, a loss of $0.01 and $0.02 per share, compared to a net loss for the three and six months ended June 30, 2020, of $2,701,000 and $5,316,000, a loss of $0.01 and $0.03 per share. The 34% and 31% decrease in net loss is due primarily to a reduction in interest expense. As noted in above (see “Interest Expense”), the reduction of interest expense is directly related to our reduction of the use of debt instruments to finance our working capital requirements.

The net loss per business segment is as follows (in thousands):

	Three months ended						Six months ended
	June 30, 2021			June 30, 2020			June 30, 2021			June 30, 2020
BioLargo corporate		(987	)		(1,823	)		(1,965	)		(3,415	)
ONM		(108	)		(126	)		(284	)		(279	)
Clyra Medical		(338	)		(432	)		(772	)		(965	)
BLEST		(190	)		(165	)		(373	)		(331	)
BioLargo Water		(167	)		(155	)		(274	)		(326	)
Net loss		(1,790	)		(2,701	)		(3,668	)		(5,316	)

Liquidity and Capital Resources

The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of our business. For the six months ended June 30, 2021, we had a net loss of $3,668,000, used $2,054,000 cash in operations, and at June 30, 2021, we had a working capital deficit of $380,000, and current assets of $2,052,000. We do not believe gross profits in 2021 will be sufficient to fund our current level of operations or pay our debts as they become due during the next 12 months, and therefore we will have to obtain further investment capital to continue to fund operations and seek to refinance our existing debt, such as through our purchase agreement with Lincoln Park Capital. (See Note 3.) We have been, and anticipate that we will continue to be, limited in terms of our capital resources.

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During the six months ended June 30, 2021, we generated revenues of $1,035,000 through our operational subsidiaries. (See Note 11.) Our subsidiaries did not individually or in the aggregate generate profits sufficient to fund their operations, or for our corporate operations or other business segments. Thus, we continued to sell securities to raise cash (see Note 3), and received additional grant aid through our Canadian subsidiary.

As of June 30, 2021, our cash and cash equivalents totaled $1,357,000. During the six months ended June 30, 2021 we made cash payments to retire debt obligations totaling $852,000 (see Note 4 and Note 9 (“Inventory Line of Credit”)). Our total liabilities included $200,000 due on a line of credit by our partially owned subsidiary Clyra Medical Technologies, Inc. (“Clyra”) due in June 2023, and $1,007,000 owed by Clyra related to a 2018 acquisition with a maturity date that automatically extends each June (see Note 9, “Note Payable (Scion)”). We have $314,000 of loans issued as part of the Small Business Administration’s (“SBA”) Paycheck Protection Program. We have applied for forgiveness of the entire balance owed on these loans and are awaiting decisions. We have a $150,000 loan accruing interest at 3.75% annually from the SBA’s Economic Injury Disaster Loan program that is payable over 30 years beginning August 2021.

During the six months ended June 30, 2021, we received $3,015,000 in proceeds from stock sales to Lincoln Park and $505,000 from stock sales from our 2020 Unit Offering (see Note 3). The cash we receive from stock sales to Lincoln Park is a function of stock price and volume – a lower stock price and less trading volume results in less money we can receive from Lincoln Park. Our agreement with Lincoln Park precludes us from selling shares to Lincoln Park on a daily basis if our stock price falls below $0.10 per share.

If we are unable to rely on our current arrangement with Lincoln Park to fund our working capital requirements, we would have to rely on other forms of financing, and there is no assurance that we will be able to do so, or if we do so, it will be on favorable terms.

We operate our business in five distinct business segments. Each of these segments obtains cash to fund operations in unique ways. ONM and BLEST generate cash by selling products and services. Clyra Medical obtains cash from revenues, and third-party investments of sales of its common stock. BioLargo Water generates cash through government research grants and tax credits; our corporate operations currently generate cash through private offerings of stock, debt instruments, and warrants, and then provides supplemental capital to support to our various business segments as they advance their technologies, products and commercial efforts.

Critical Accounting Policies

Our discussion and analysis of our results of operations and liquidity and capital resources are based on our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States. The preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and disclosure of contingent assets and liabilities. On an ongoing basis, we evaluate our estimates and judgments, including those related to revenue recognition, valuation of offerings of debt with equity or derivative features which include the valuation of the warrant component, any beneficial conversion feature and potential derivative treatment, and share-based payments. We base our estimates on anticipated results and trends and on various other assumptions that we believe are reasonable under the circumstances, including assumptions as to future events. These estimates form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. By their nature, estimates are subject to an inherent degree of uncertainty. Actual results that differ from our estimates could have a significant adverse effect on our operating results and financial position.

Note 2, “Summary of Significant Accounting Policies” in Part I, Item 1 of this Form 10-Q and in the Notes to Consolidated Financial Statements in Part II, Item 8 of the 2020 Form 10-K, and “Critical Accounting Policies and Estimates” in Part II, Item 7 of the 2020 Form 10-K, describe the significant accounting policies and methods used in the preparation of the Company’s consolidated financial statements. There have been no material changes to the Company’s critical accounting policies and estimates since the 2020 Form 10-K.

Item 4. Controls and Procedures

We conducted an evaluation, under the supervision and with the participation of management, including our chief executive officer and chief financial officer, of the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended – the “Exchange Act”) as of the end of the period covered by this Report. There were no changes in our internal control over financial reporting during the quarter ended June 30, 2021, which were identified in connection with management’s evaluation required by paragraph (d) of Rules 13a-15 and 15d-15 under the Exchange Act, that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

35

Our procedures have been designed to ensure that the information relating to our company, including our consolidated subsidiaries, required to be disclosed in our SEC reports is recorded, processed, summarized and reported within the time periods specified in SEC rules and forms, and is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as appropriate to allow for timely decisions regarding required disclosure. However, our Company is continuing to grow and evolve, as our product and services sales continues to grow, and as we diversify our clients to include municipalities, increasing strain on our accounting systems. These activities put stress on our overall controls and procedures. As our operations do not yet generate enough cash to fund operations, and we rely on financing activities to maintain our level of operations and fund our anticipated growth, we do not yet have the ability to implement the more sophisticated control systems used by larger companies. Although we have made some improvements, our chief executive officer and chief financial officer have concluded that, as of the evaluation date, our disclosure controls and procedures were not effective, due to the material weakness identified below.

It should be noted that the design of any system of controls is based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions, regardless of how remote.

Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). Our internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures are being made only in accordance with authorizations of management and directors; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of our assets that could have a material effect on the financial statements.

Under the supervision and with the participation of our management, including our chief executive officer and the chief financial officer, we have established internal control procedures in accordance with the guidelines established in the 2013 Framework —Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Management evaluated the effectiveness of our internal controls, and concluded that due to our limited financial and personnel resources, the fact that we operate our business in three distinct locations in the U.S. and Canada, and the lack of sophisticated reporting systems, we continue to have a material weakness in our internal controls with respect to the closing our financial statements. Until the company has the financial resources to implement more robust automated systems, or to hire additional dedicated accounting personnel, we expect this material weakness to continue.

Our management, including our chief executive officer and chief financial officer, does not expect that our disclosure controls or our internal control over financial reporting, or any system we design or implement in the future, will prevent or detect all errors and all fraud. A control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system’s objectives will be met. The design of any system of controls is based in part on certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions.

36

PART II

OTHER INFORMATION

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

The following is a report of the sales of unregistered securities during the period covered by this report not previously reported in an annual report on Form 10-K, a Quarterly Report on Form 10-Q, or a Current Report on Form 8-K.

During the three months ended June 30, 2021, pursuant to an offering commenced in May 2020 (the “2020 Unit Offering”), we sold 2,556,547 shares of our common stock and received $400,000 in gross and net proceeds from four accredited investors. In addition to the shares, we issued the investors six-month and a five-year warrants to purchase an aggregate 5,113,094 additional shares.

On June 30, 2021, we issued 172,059 shares of our common stock, and options to purchase 17,647 shares of our common stock, at $0.17 per share in lieu of $31,000 of accrued and unpaid obligations to consultants.

All of these offerings and sales were made in reliance on the exemption from registration contained in Section 4(2) of the Securities Exchange Act and/or Regulation D promulgated thereunder as not involving a public offering of securities.

37

Item 5. Other Information

On March 30, 2020, we entered into a purchase agreement (the “Purchase Agreement”) with Lincoln Park Capital Fund, LLC (“Lincoln Park”), pursuant to which the Company has the right to sell to Lincoln Park up to $10,250,000 in shares of the Company’s common stock, $0.00067 par value per share (the “Common Stock”), over the 36-month term of the Purchase Agreement, subject to certain limitations and conditions set forth in the Purchase Agreement.

Concurrently with the execution of the Purchase Agreement on March 30, 2020, we entered into a registration rights agreement (the “Registration Rights Agreement”) with Lincoln Park pursuant to which the Company agreed, among other things, to file a registration statement with the SEC to register for sale under the Securities Act of 1933, as amended (the “Act”), the shares of common stock that may be issued and sold to Lincoln Park from time to time under the Purchase Agreement. We filed a registration statement on Form S-1 with the SEC, which was deemed effective on April 21, 2020.

Lincoln Park agreed to make an initial purchase of $250,000 of shares for $0.14 per share. That purchase was completed March 31, 2020.

The Purchase Agreement provides that, commencing on the date that a registration statement is declared effective by the SEC and a final prospectus in connection therewith is filed and the other terms and conditions of the Purchase Agreement are satisfied from time to time on any trading day the Company selects, the Company has the right, in its sole discretion, subject to the conditions and limitations in the Purchase Agreement, to direct Lincoln Park to purchase up to 100,000 shares of Common Stock (each such purchase, a “Regular Purchase”) over the 36-month term of the Purchase Agreement, provided that at least one trading day has passed since the last Regular Purchase. The purchase price of shares of Common Stock pursuant to the Purchase Agreement will be based on the prevailing market price at the time of sale as set forth in the Purchase Agreement. There are no trading volume requirements or restrictions under the Purchase Agreement. Lincoln Park’s obligation under each Regular Purchase shall not exceed $500,000. There is no upper limit on the price per share that Lincoln Park must pay for Common Stock under the Purchase Agreement.

In addition to regular purchases, as described above, the Company may also direct Lincoln Park to purchase additional amounts as accelerated purchases. In all instances, the Company may not sell shares of its Common Stock to Lincoln Park under the Purchase Agreement if it would result in Lincoln Park beneficially owning more than 4.99% of the Common Stock.

Lincoln Park represented to the Company, among other things, that it was an “accredited investor” (as such term is defined in Rule 501(a) of Regulation D under the Securities Act of 1933, as amended), and the Company sold the securities in reliance upon exemptions from the registration requirements of United States federal and state securities laws.

The Purchase Agreement and the Registration Rights Agreement contain customary representations, warranties, agreements and conditions to completing future sale transactions, indemnification rights and obligations of the parties. The Company has the right to terminate the Purchase Agreement at any time, at no cost or penalty. During any “event of default” under the Purchase Agreement, all of which are outside of Lincoln Park’s control, Lincoln Park does not have the right to terminate the Purchase Agreement; however, the Company may not initiate any regular or other purchase of shares by Lincoln Park, until such event of default is cured. There are no restrictions on future financings, rights of first refusal, participation rights, penalties or liquidated damages in the Purchase Agreement or Registration Rights Agreement, other than a prohibition on entering into any “Variable Rate Transaction,” as defined in the Purchase Agreement.

Actual sales of shares of Common Stock to Lincoln Park under the Purchase Agreement will depend on a variety of factors to be determined by the Company from time to time, including, among others, market conditions, the trading price of the Common Stock and determinations by the Company as to the appropriate sources of funding for the Company and its operations. As set forth in the Purchase Agreement, in consideration for entering in the Purchase Agreement, the Company has agreed to issue to Lincoln Park 1,785,715 shares of Common Stock. The Company will not receive any cash proceeds from the issuance of these shares.

The net proceeds under the Purchase Agreement to the Company will depend on the frequency and prices at which the Company sells shares of its stock to Lincoln Park. The Company expects that any proceeds received by the Company from such sales to Lincoln Park will be used for working capital and general corporate purposes.

During the six months ended June 30, 2021 and 2020, we sold 18,526,309 and 3,198,358 shares, respectively, to Lincoln Park, and received $3,015,000 and $1,461,000, respectively, in gross and net proceeds. Subsequent to June 30, 2021, we continue to draw on the Purchase Agreement for working capital from time to time.

38

Item 6. Exhibits

See the Exhibit Index for a list of exhibits filed as part of this report and incorporated herein by reference.

Exhibit Index

		Incorporated by Reference Herein
Exhibit Number	Exhibit Description	Form	File Date
3.1	Bylaws of BioLargo, Inc., as amended and restated	Form 10-KSB	5/23/2003
3.2	Amended and Restated Certificate of Incorporation for BioLargo, Inc. filed March 16, 2007	Form 10-KSB	5/4/2007
3.3	Certificate of Amendment to Certificate of Incorporation, filed May 25, 2018	Pos Am	6/22/2018
3.4	Amended and Restated Articles of Incorporation of Clyra Medical Technologies, Inc.	Form 8-K	1/6/2016
4.1	2018 Equity Incentive Plan	Form S-8	6/22/2018
4.2	Stock Option Award Agreement under 2018 Equity Incentive Plan	Form S-8	6/22/2018
4.3	Notice of Stock Option Grant under 2018 Equity Incentive Plan	Form S-8	6/22/2018
4.4	Restricted Stock Unit Award Agreement under 2018 Equity Incentive Plan	Form S-8	6/22/2018
4.5	Notice of Restricted Stock Unit Award under 2018 Equity Incentive Plan	Form S-8	6/22/2018
4.6	Form of Stock Options issued in exchange for reduction in accounts payable.	Form 10-K	3/31/2015
4.7	Convertible Promissory Note issued to Vista Capital Investments LLC dated January 7, 2019	Form 8-K	1/11/2019
4.8	Form of Warrant issued to One Year Note holder dated December 30, 2016	Form S-1	1/25/2017
4.9	Purchase Agreement, dated as of August 25, 2017 by and between BioLargo, Inc. and Lincoln Park Capital Fund, LLC	Form 8-K	8/31/2017
4.10	Promissory note issued by Clyra Medical to Scion Solutions dated September 26, 2018	Form 8-K	10/2/2018
4.11	Amendment dated March 5, 2019 to Promissory Note issued to Vernal Bay Investments, LLC on September 19, 2018	Form 8-K	3/8/2019
4.12	Amendment dated March 5, 2019 to Promissory Note issued to Chappy Bean, LLC on September 19, 2018	Form 8-K	3/8/2019
4.13	$50,000 convertible note, matures March 8, 2020	Form 10-Q	5/14/2018
4.14	Amendment dated August 12, 2019 to Promissory Note issued to Vernal Bay Investments, LLC on September 19, 2018	Form 10-Q	8/14/2019
4.15	Amended and restated note issued to Vernal August 12, 2019	Form 10-Q	8/14/2019
4.16	Form of convertible notes that mature April 20, 2021 (Spring 2018 Offering)	Form 10-Q	5/14/2018
4.17	Warrant issued to Vernal August 12, 2019	Form 10-Q	8/14/2019
4.18	Revolving Line of Credit Agreement dated June 30, 2020, between Clyra Medical and Vernal Bay	Form 8-K	7/7/2020

39

4.19	Security Agreement dated June 30, 2020, between Clyra Medical and Vernal Bay	Form 8-K	7/7/2020
4.20	Revolving Line of Credit Note issued by Clyra Medical to Vernal Bay on June 30, 2020	Form 8-K	7/7/2020
4.21	Convertible Promissory Note issued to Tangiers Global, LLC dated January 31, 2019	Form 8-K	2/11/2019
4.22	Stock Purchase Warrant Issued to Lincoln Park Capital on January 31, 2019	Form 8-K	2/11/2019
4.23	OID twelve-month promissory note	Form 8-K	8/2/2019
4.24	$600,000 Promissory note dated August 9, 2019	Form 10-Q	8/14/2019
4.25	Registration Rights Agreement, dated as of March 30, 2020, by and between BioLargo, Inc. and Lincoln Park Capital Fund, LLC	Form 8-K	3/31/2020
4.26	Warrant issued in 2020 Unit Offering	Form 10-Q	8/14/2020
4.27	Amendment to $50,000 Convertible Note dated March 8, 2018	Form 10-K	3/30/2021
4.28	Warrant issued to $50,000 Convertible Noteholder on March 1, 2020	Form 10-K	3/30/2021
4.29	Second Amendment dated August 12, 2019 to Promissory Note issued to Vernal Bay Investments, LLC on September 19, 2018	Form 10-Q	8/14/2019
4.30	Amended and restated note issued to Vernal Bay on August 12, 2019	Form 10-Q	8/14/2019
4.31	Second Amendment dated August 12, 2019, to Promissory Note issued to Chappy Bean, LLC dated September 19, 2018	Form 8-K	5/19/2021
4.32	Amended and restated note issued to Chappy Bean on August 12, 2019	Form 8-K	5/19/2021
4.33	Third Amendment dated August 10, 2020 to Promissory Note issued to Vernal Bay Investments, LLC on September 19, 2018	Form 8-K	5/19/2021
4.34	Third Amendment dated August 10, 2020, to Promissory Note issued to Chappy Bean, LLC dated September 19, 2018	Form 8-K	5/19/2021
4.35	Final Payoff Agreement dated May 17, 2021 to Promissory Note issued to Vernal Bay Investments, LLC on September 19, 2018	Form 8-K	5/19/2021
4.36	Final Payoff Agreement dated May 18, 2021 to Promissory Note issued to Chappy Bean, LLC dated September 19, 2018	Form 8-K	5/19/2021
10.1	License Agreement to Clyra Medical Technologies, Inc., dated December 17, 2012	Form 8-K	1/6/2016
10.2	December 30, 2015 amendment to License Agreement with Clyra Medical Technologies, Inc.	Form 8-K	1/6/2016
10.3	Consulting Agreement dated December 30, 2015 with Beach House Consulting LLC	Form 8-K	1/6/2016
10.4	Commercial Office Lease Agreement for 14921 Chestnut St., Westminster, CA 92683	Form 8-K	8/24/2016
10.5†	January 16, 2019 Engagement Extension Agreement by and between BioLargo, Inc. and Charles K. Dargan	Form 8-K	1/18/2019
10.6†	2020 Engagement Extension Agreement with CFO	Form 8-K	2/27/2020
10.7	Purchase Agreement, dated as of March 30, 2020 by and between BioLargo, Inc. and Lincoln Park Capital Fund, LLC.	Form 8-K	3/31/2020
10.8†	2021 Engagement Extension Agreement with CFO	Form 8-K	3/19/2021
31.1*	Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and Rules 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934

40

31.2*	Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and Rules 13(a)-14 and 15(d)-14 under the Securities Exchange Act of 1934
32*	Certification of Chief Executive Officer and Chief Financial Officer Pursuant to 18 U.S.C. Section 1350.
101.INS**	Inline XBRL Instance
101.SCH**	Inline XBRL Taxonomy Extension Schema
101.CAL**	Inline XBRL Taxonomy Extension Calculation
101.DEF**	Inline XBRL Taxonomy Extension Definition
101.LAB**	Inline XBRL Taxonomy Extension Labels
101.PRE**	Inline XBRL Taxonomy Extension Presentation
104	Cover Page Interactive Data File (Formatted as Inline XBRL and contained in Exhibit 101)

* Filed herewith

** Furnished herewith

† Management contract or compensatory plan, contract or arrangement

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.

	BIOLARGO, INC.
Date: August 16, 2021	By: /s/ DENNIS P. CALVERT
	Dennis P. Calvert Chief Executive Officer
Date: August 16, 2021	By: /s/ CHARLES K. DARGAN, II
	Chief Financial Officer

41

EX-31.1

EXHIBIT 31.1

Certification of Chief Executive Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Dennis P. Calvert, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of BioLargo, Inc.;

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

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

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

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

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

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

(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;

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

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

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

Date: August 16, 2021	By:	/s/ DENNIS P. CALVERT
		Dennis P. Calvert
		Chief Executive Officer

EX-31.2

EXHIBIT 31.2

Certification of Chief Financial Officer

Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

I, Charles K. Dargan II, certify that:

1. I have reviewed this Quarterly Report on Form 10-Q of BioLargo, Inc.;

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

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

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

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

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

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

(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;

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

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

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

Date: August 16, 2021	By:	/s/ CHARLES K. DARGAN II
		Charles K. Dargan II
		Chief Financial Officer

EX-32

EXHIBIT 32

CERTIFICATION OF CHIEF EXECUTIVE OFFICER

AND CHIEF FINANCIAL OFFICER

PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Dennis P. Calvert, Chief Executive Officer of BioLargo, Inc., certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge, that the Quarterly Report of BioLargo, Inc. on Form 10-Q for the quarter ended June 30, 2021 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of BioLargo, Inc.

Dated: August 16, 2021	By:	/s/ DENNIS P. CALVERT
		Dennis P. Calvert
		President and Chief Executive Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to BioLargo, Inc. and will be retained by BioLargo, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

I, Charles K. Dargan II, Chief Financial Officer of BioLargo, Inc., certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, to the best of my knowledge that the Quarterly Report of BioLargo, Inc. on Form 10-Q for the quarter ended June 30, 2021 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of BioLargo, Inc.

Dated: August 16, 2021	By:	/s/ CHARLES K. DARGAN II
		Charles K. Dargan II
		Chief Financial Officer

A signed original of this written statement required by Section 906 of the Sarbanes-Oxley Act of 2002 has been provided to BioLargo, Inc. and will be retained by BioLargo, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.

XML

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2021	Aug. 10, 2021
Document Information [Line Items]
Entity Central Index Key	0000880242
Entity Registrant Name	BIOLARGO, INC.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2021
Document Transition Report	false
Entity File Number	000-19709
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	65-0159115
Entity Address, Address Line One	14921 Chestnut St.
Entity Address, City or Town	Westminster
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92683
City Area Code	888
Local Phone Number	400-2863
Title of 12(b) Security	Common stock
Trading Symbol	BLGO
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		228,147,577

XML

Consolidated Balance Sheets (Current Period Unaudited) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,357,000	$ 716,000
Accounts receivable, net of allowance	343,000	484,000
Inventories, net of allowance	262,000	277,000
Prepaid expenses and other current assets	90,000	28,000
Total current assets	2,052,000	1,505,000
Non-current assets
In-process research and development (Note 8)	2,150,000	2,150,000
Equipment, net of depreciation	69,000	60,000
Other non-current assets	35,000	35,000
Investment in South Korean joint venture	40,000	63,000
Right of use operating lease, net of amortization	311,000	341,000
Clyra Medical prepaid marketing (Note 9)	788,000	788,000
Total non-current assets	3,393,000	3,437,000
Total assets	5,445,000	4,942,000
Current liabilities:
Deferred revenue	139,000	48,000
Customer deposits	81,000	0
Lease liability	114,000	114,000
Total current liabilities	2,432,000	3,544,000
Long-term liabilities:
Long-term debt, noncurrent	485,000	507,000
Lease liability	196,000	226,000
Common stock held for redemption (Note 9)	900,000	900,000
Total long-term liabilities	1,781,000	1,633,000
Total liabilities	4,213,000	5,177,000
COMMITMENTS AND CONTINGENCIES (Note 12)
STOCKHOLDERS’ EQUITY (DEFICIT):
Preferred Series A, $0.00067 Par Value, 50,000,000 Shares Authorized, -0- Shares Issued and Outstanding, at June 30, 2021 and December 31, 2020	0	0
Common stock, $0.00067 Par Value, 400,000,000 Shares Authorized, 250,996,373 and 225,885,682 Shares Issued, at June 30, 2021 and December 31, 2020	168,000	151,000
Additional paid-in capital	140,292,000	135,849,000
Accumulated other comprehensive loss	(103,000)	(101,000)
Accumulated deficit	(135,294,000)	(132,041,000)
Total BioLargo Inc. and subsidiaries stockholders’ equity (deficit)	5,063,000	3,858,000
Non-controlling interest (Notes 9 and 10)	(3,831,000)	(4,093,000)
Total stockholders’ equity (deficit)	1,232,000	(235,000)
Total liabilities and stockholders’ equity (deficit)	5,445,000	4,942,000
Entities, Excluding Partially Owned Subsidiary [Member]
Current liabilities:
Accounts payable and accrued expenses	331,000	513,000
Debt obligations, net of discount and amortization (Note 4)	0	1,102,000
Accounts payable and accrued expenses	331,000	513,000
Long-term liabilities:
Long-term debt, noncurrent	485,000	507,000
Partially Owned Subsidiary [Member]
Current liabilities:
Accounts payable and accrued expenses	760,000	536,000
Debt obligations, net of discount and amortization (Note 4)	1,007,000	1,231,000
Accounts payable and accrued expenses	760,000	536,000
Long-term liabilities:
Long-term debt, noncurrent	$ 200,000	$ 0

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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2021	Dec. 31, 2020
Convertible Preferred Stock, Par Value (in dollars per share)	$ 0.00067	$ 0.00067
Convertible Preferred Stock, Shares Authorized (in shares)	50,000,000	50,000,000
Convertible Preferred Stock, Shares Issued (in shares)	0	0
Convertible Preferred Stock, Shares Outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.00067	$ 0.00067
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	250,996,373	225,885,682

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Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenues
Revenue	$ 464,000	$ 418,000	$ 1,035,000	$ 856,000
Cost of revenue
Gross profit	201,000	217,000	433,000	395,000
Selling, general and administrative expenses	1,547,000	1,872,000	3,310,000	3,417,000
Research and development	356,000	350,000	683,000	684,000
Operating loss	(1,702,000)	(2,005,000)	(3,560,000)	(3,706,000)
Other (expense) income:
Interest expense	(89,000)	(747,000)	(182,000)	(1,504,000)
Loss on debt extinguishment	0	0	0	(214,000)
PPP loan forgiveness	0	0	43,000	0
Tax credit	1,000	44,000	1,000	44,000
Grant income	0	7,000	30,000	64,000
Total other expense:	(88,000)	(696,000)	(108,000)	(1,610,000)
Net loss	(1,790,000)	(2,701,000)	(3,668,000)	(5,316,000)
Net loss attributable to noncontrolling interest	(168,000)	(275,000)	(415,000)	(617,000)
Net loss attributable to common shareholders	$ (1,622,000)	$ (2,426,000)	$ (3,253,000)	$ (4,699,000)
Net loss per share attributable to common shareholders:
Loss per share attributable to shareholders – basic and diluted (in dollars per share)	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.03)
Weighted average number of common shares outstanding: (in shares)	243,731,011	181,567,199	238,759,632	175,220,216
Comprehensive loss:
Net loss	$ (1,790,000)	$ (2,701,000)	$ (3,668,000)	$ (5,316,000)
Foreign currency translation	0	22,000	(2,000)	22,000
Comprehensive loss	(1,790,000)	(2,679,000)	(3,670,000)	(5,294,000)
Comprehensive loss attributable to noncontrolling interest	(168,000)	(275,000)	(415,000)	(617,000)
Comprehensive loss attributable to common stockholders	(1,622,000)	(2,404,000)	(3,255,000)	(4,677,000)
Product [Member]
Revenues
Revenue	319,000	301,000	762,000	580,000
Cost of revenue
Cost of Goods and Services Sold	(160,000)	(109,000)	(397,000)	(237,000)
Service [Member]
Revenues
Revenue	145,000	117,000	273,000	276,000
Cost of revenue
Cost of Goods and Services Sold	$ (103,000)	$ (92,000)	$ (205,000)	$ (224,000)

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Consolidated Statement of Stockholders' Equity (Deficit) (Unaudited) - USD ($)	Clyra Medical Technology Inc [Member] Common Stock [Member]	Clyra Medical Technology Inc [Member] Additional Paid-in Capital [Member]	Clyra Medical Technology Inc [Member] Retained Earnings [Member]	Clyra Medical Technology Inc [Member] AOCI Attributable to Parent [Member]	Clyra Medical Technology Inc [Member] Noncontrolling Interest [Member]	Clyra Medical Technology Inc [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2019							166,256,024
Balance at Dec. 31, 2019							$ 111,000	$ 121,327,000	$ (123,492,000)	$ (99,000)	$ (27,000)	$ (2,180,000)
Sale of common stock for cash (in shares)							4,848,305
Sale of common stock for cash							$ 3,000	898,000	0	0	0	901,000
Issuance of common stock for service (in shares)							1,039,490
Issuance of common stock for service							$ 1,000	177,000	0	0	0	178,000
Stock option compensation expense	$ 0	$ 420,000	$ 0	$ 0	$ 0	$ 420,000	0	320,000	0	0	0	320,000
Clyra Medical securities offering	0	15,000	0	0	10,000	25,000
Net loss							$ 0	0	(2,274,000)	0	(342,000)	(2,616,000)
Conversion of notes (in shares)							3,387,649
Conversion of notes							$ 2,000	432,000	0	0	0	434,000
Issuance of common stock for interest (in shares)							19,278
Issuance of common stock for interest							$ 0	4,000	0	0	0	4,000
Balance (in shares) at Mar. 31, 2020							178,479,317
Balance at Mar. 31, 2020							$ 119,000	123,121,000	(125,866,000)	(99,000)	89,000	(2,636,000)
Common stock issued as a financing fee; deferred offering costs (in shares)							2,928,571
Common stock issued as a financing fee; deferred offering costs							$ 2,000	(124,000)	0	0	0	(122,000)
Deemed dividend for the change in accounting for derivative liability							0	100,000	(100,000)	0	0	0
Allocation of noncontrolling interest from Clyra Stock option issuance							$ 0	(448,000)	0	0	448,000	0
Balance (in shares) at Dec. 31, 2019							166,256,024
Balance at Dec. 31, 2019							$ 111,000	121,327,000	(123,492,000)	(99,000)	(27,000)	(2,180,000)
Net loss												(5,316,000)
Foreign currency translation												22,000
Foreign currency translation												22,000
Balance (in shares) at Jun. 30, 2020							190,703,381
Balance at Jun. 30, 2020							$ 128,000	130,875,000	(128,292,000)	(77,000)	(4,239,000)	(1,605,000)
Balance (in shares) at Mar. 31, 2020							178,479,317
Balance at Mar. 31, 2020							$ 119,000	123,121,000	(125,866,000)	(99,000)	89,000	(2,636,000)
Sale of common stock for cash (in shares)							3,689,246
Sale of common stock for cash							$ 2,000	558,000	0	0	0	560,000
Issuance of common stock for service (in shares)							1,774,033
Issuance of common stock for service							$ 1,000	271,000	0	0	0	272,000
Stock option compensation expense	0	20,000	0	0	0	20,000	0	528,000	0	0	0	528,000
Noncontrolling interest allocation							0	4,401,000	0	0	(4,401,000)	0
Clyra Medical securities offering	0	476,000	0	0	348,000	824,000
Net loss							0	0	(2,426,000)	0	(275,000)	(2,701,000)
Foreign currency translation							$ 0	0	0	22,000	0	22,000
Conversion of notes (in shares)							6,463,784
Conversion of notes							$ 6,000	682,000	0	0	0	688,000
Issuance of common stock for interest (in shares)							297,001
Issuance of common stock for interest							$ 0	30,000	0	0	0	30,000
Foreign currency translation							$ 0	0	0	22,000	0	22,000
Balance (in shares) at Jun. 30, 2020							190,703,381
Balance at Jun. 30, 2020							$ 128,000	130,875,000	(128,292,000)	(77,000)	(4,239,000)	(1,605,000)
Clyra Medical stock for other asset (See Note 2)							$ 0	788,000	0	0	0	788,000
Balance (in shares) at Dec. 31, 2020							225,885,682
Balance at Dec. 31, 2020							$ 151,000	135,849,000	(132,041,000)	(101,000)	(4,093,000)	(235,000)
Sale of common stock for cash (in shares)							13,330,619
Sale of common stock for cash							$ 9,000	2,097,000	0	0	0	2,106,000
Issuance of common stock for service (in shares)							747,487
Issuance of common stock for service							$ 1,000	110,000	0	0	0	111,000
Stock option compensation expense	0	161,000	0	0	0	161,000	0	424,000	0	0	0	424,000
Warrants and conversion feature issued as discount on convertible note payable							0	35,000	0	0	0	35,000
Noncontrolling interest allocation							0	(313,000)	0	0	313,000	0
Clyra Medical securities offering	0	0	0	0	50,000	50,000
Net loss							0	0	(1,631,000)	0	(247,000)	(1,878,000)
Foreign currency translation							0	0	0	(2,000)	0	(2,000)
Foreign currency translation							$ 0	0	0	(2,000)	0	(2,000)
Balance (in shares) at Mar. 31, 2021							239,963,788
Balance at Mar. 31, 2021							$ 161,000	138,363,000	(133,672,000)	(103,000)	(3,977,000)	772,000
Balance (in shares) at Dec. 31, 2020							225,885,682
Balance at Dec. 31, 2020							$ 151,000	135,849,000	(132,041,000)	(101,000)	(4,093,000)	(235,000)
Net loss												(3,668,000)
Foreign currency translation												(2,000)
Foreign currency translation												(2,000)
Balance (in shares) at Jun. 30, 2021							250,996,373
Balance at Jun. 30, 2021							$ 168,000	140,292,000	(135,294,000)	(103,000)	(3,831,000)	1,232,000
Balance (in shares) at Mar. 31, 2021							239,963,788
Balance at Mar. 31, 2021							$ 161,000	138,363,000	(133,672,000)	(103,000)	(3,977,000)	772,000
Sale of common stock for cash (in shares)							8,627,237
Sale of common stock for cash							$ 6,000	1,408,000	0	0	0	1,414,000
Issuance of common stock for service (in shares)							357,132
Issuance of common stock for service							$ 0	60,000	0	0	0	60,000
Stock option compensation expense	$ 0	$ 102,000	$ 0	$ 0	$ 0	$ 102,000	0	330,000	0	0	0	330,000
Noncontrolling interest allocation							0	(314,000)	0	0	314,000	0
Net loss							0	0	(1,622,000)	0	(168,000)	(1,790,000)
Foreign currency translation							$ 0	0	0	0	0	0
Conversion of notes (in shares)							1,966,439
Conversion of notes							$ 1,000	327,000	0	0	0	328,000
Issuance of common stock for interest (in shares)							81,777
Issuance of common stock for interest							$ 0	16,000	0	0	0	16,000
Foreign currency translation							$ 0	0	0	0	0	0
Balance (in shares) at Jun. 30, 2021							250,996,373
Balance at Jun. 30, 2021							$ 168,000	$ 140,292,000	$ (135,294,000)	$ (103,000)	$ (3,831,000)	$ 1,232,000

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Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Cash flows from operating activities
Net loss	$ (3,668,000)	$ (5,316,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock option compensation expense	1,017,000	1,074,000
Common stock issued in lieu of salary to officers and fees for services from vendors	171,000	450,000
Common stock issued for interest	16,000	34,000
Interest expense related to amortization of the discount on convertible notes payable and line of credit	110,000	1,327,000
PPP loan forgiveness	(43,000)	0
Loss on extinguishment of debt	0	214,000
Loss on investment in South Korean joint venture	23,000	15,000
Bad debt expense	0	11,000
Depreciation expense	12,000	33,000
Changes in assets and liabilities:
Accounts receivable	141,000	86,000
Prepaid expenses and other current assets	62,000	4,000
Inventories	15,000	(100,000)
Customer deposits	81,000	4,000
Deferred revenue	91,000	(22,000)
Net cash used in operating activities	(2,054,000)	(2,047,000)
Cash flows from investing activities
Investment in South Korean joint venture	0	(100,000)
Purchase and sale of equipment	(21,000)	16,000
Net cash used in investing activities	(21,000)	(84,000)
Cash flows from financing activities
Proceeds from sales of common stock	3,520,000	1,461,000
Proceeds from payroll protection program loan	0	349,000
Payment of debt obligations	(828,000)	0
Net cash provided by financing activities	2,718,000	2,661,000
Net effect of foreign currency translation	(2,000)	22,000
Net change in cash	641,000	552,000
Cash at beginning of period	716,000	655,000
Cash at end of period	1,357,000	1,207,000
Supplemental disclosures of cash flow information
Interest	33,000	50,000
Income taxes	0	2,000
Non-cash investing and financing activities
Fair value of warrants issued with convertible notes	35,000	0
Inventory included in accounts payable and accrued expense	0	55,000
Lincoln Park deferred offering costs, recorded as additional paid-in capital	0	(122,000)
Conversion of notes payable to common stock	328,000	1,122,000
Exchange of consulting services for Clyra common shares	0	788,000
Deemed dividend	0	100,000
Allocation of noncontrolling interest	627,000	4,849,000
Clyra Medical Common Stock [Member]
Cash flows from financing activities
Proceeds from sales of common stock	50,000	849,000
Entities, Excluding Partially Owned Subsidiary [Member]
Changes in assets and liabilities:
Accounts payable and accrued expenses	(182,000)	47,000
Partially Owned Subsidiary [Member]
Changes in assets and liabilities:
Accounts payable and accrued expenses	224,000	100,000
Cash flows from financing activities
Payment of Clyra Medical debt obligations	$ (24,000)	$ 0

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Note 1 - Business and Organization

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

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

Note 1. Business and Organization

Description of Business

BioLargo, Inc. is an innovative technology developer and environmental engineering company driven by a mission to “make life better” by delivering robust, sustainable solutions for a broad range of industries and applications, with a focus on clean water, clean air and a cleaner earth. The company also owns a minority interest in a medical products subsidiary that has licensed BioLargo’s technologies.  Our business strategy is straightforward: we invent or acquire technologies that we believe have the potential to be disruptive in large commercial markets; we develop and validate these technologies to advance and promote their commercial success as we leverage our considerable scientific, engineering, and entrepreneurial talent; we then monetize these technical assets through a variety of business structures that may include licensure, joint venture, sale, spin off, or by deploying direct to market strategies.

Liquidity / Going concern

The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the settlement of liabilities and commitments in the normal course of our business. For the six months ended June 30, 2021, we had a net loss of $3,668,000, used $2,054,000 cash in operations, and at June 30, 2021, we had a working capital deficit of $380,000, and current assets of $2,052,000. We do not believe gross profits in 2021 will be sufficient to fund our current level of operations, and therefore we will have to obtain further investment capital to continue to fund operations, such as through our purchase agreement with Lincoln Park Capital. (See Note 3.) We have been, and anticipate that we will continue to be, limited in terms of our capital resources.

During the six months ended June 30, 2021, we generated revenues of $1,035,000 through our operational subsidiaries. (See Note 11.) Our subsidiaries did not individually or in the aggregate generate profits sufficient to fund their operations, or contribute to our corporate operations. Thus, we continued to sell securities to raise cash (see Note 3), and received additional research grant aid through our Canadian subsidiary.

As of June 30, 2021, our cash and cash equivalents totaled $1,357,000. During the six months ended June 30, 2021 we made cash payments to retire debt obligations totaling $852,000 (see Note 4 and Note 9 (“Inventory Line of Credit”)). Our total debt as of June 30, 2021 was $1,721,000. Of that amount, $1,207,000 is owed by our partially owned subsidiary Clyra Medical Technologies, Inc. (“Clyra”) as follows: (i) a note with a maturity date that automatically extends each June (see Note 9, “Note Payable (Scion)”), and (ii) a line of credit totaling $200,000, due in June 2023. Our remaining $514,000 of debt includes (i) $314,000 of loans issued as part of the Small Business Administration’s (“SBA”) Paycheck Protection Program (for which we have applied for forgiveness, (ii) a $150,000 loan accruing interest at 3.75% annually from the SBA’s Economic Injury Disaster Loan program that is payable over 30 years beginning August 2021, and (iii) a $50,000 convertible debt due in March 2023.

During the six months ended June 30, 2021, we received $3,015,000 in proceeds from sales of our common stock to Lincoln Park and $505,000 from stock sales from our 2020 Unit Offering (see Note 3). The cash we receive from stock sales to Lincoln Park is a function of stock price and volume – a lower stock price and less trading volume results in less money we can receive from Lincoln Park. Our agreement with Lincoln Park precludes us from selling shares to Lincoln Park on a daily basis if our stock price falls below $0.10 per share.

If we are unable to rely on our current arrangement with Lincoln Park to fund our working capital requirements, we would have to rely on other forms of financing, and there is no assurance that we will be able to do so, or if we do so, it will be on favorable terms.

To reduce our operational cash burdens, we regularly issue officers and vendors stock or options in lieu of cash compensation, and we anticipate that we will continue to be able to do so in the future. In the six months ended June 30, 2021, our CEO and CSO accepted stock in lieu of $31,000 in unpaid salary. Our CFO has also agreed to receive options to purchase our common stock in lieu of cash, (see Note 5, “Chief Financial Officer Extension”) as compensation for his services. Each has indicated a willingness to do so in the future.

The foregoing factors raise substantial doubt about our ability to continue as a going concern. Ultimately, our ability to continue as a going concern is dependent upon our ability to attract significant new sources of capital, attain a reasonable threshold of operating efficiencies and achieve profitable operations by licensing or otherwise commercializing products incorporating our technologies. The consolidated financial statements do not include any adjustments that might be necessary if we are unable to continue as a going concern.

BIOLARGO, INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

(UNAUDITED)

Organization

We are a Delaware corporation formed in 1991. We have four wholly-owned subsidiaries: BioLargo Life Technologies, Inc., organized under the laws of the State of California in 2006; ONM Environmental, Inc., organized under the laws of the State of California in 2009; BioLargo Water Investment Group Inc., organized under the laws of the State of California in 2019, which wholly owns BioLargo Water, Inc., organized under the laws of Canada in 2014; and BioLargo Development Corp., organized under the laws of the State of California in 2016. Additionally, we own 94% of BioLargo Engineering Science and Technologies, LLC (“BLEST”), organized under the laws of the State of Tennessee in 2017 (see Note 10). We also own 45% of Clyra Medical Technologies, Inc. (“Clyra” or “Clyra Medical”), organized under the laws of the State of California in 2012, and consolidate their financial statements (see Note 2, subheading “Principles of Consolidation,” and Note 9).

The unaudited consolidated financial statements of the Company have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial information and pursuant to Rule 8-03 of Regulation S-X under the Securities Act of 1933, as amended. Accordingly, they do not include all of the information and notes required by generally accepted accounting principles for annual financial statements.  In the opinion of management, all adjustments (consisting only of normal recurring adjustments) considered necessary for a fair presentation have been included. For some of our activities, we are still operating in the early stages of the sales and distribution process, and therefore our operating results for the six months ended June 30, 2021 are not necessarily indicative of the results that may be expected for the year ending December 31, 2021, or for any other period. These unaudited consolidated financial statements and notes should be read in conjunction with the Company’s audited consolidated financial statements and accompanying notes included in the Annual Report on Form 10-K for the year ended December 31, 2020, filed with the Securities and Exchange Commission (the “SEC”) on March 30, 2021.

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Note 2 - Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Significant Accounting Policies [Text Block]

Note 2. Summary of Significant Accounting Policies

In the opinion of management, the accompanying balance sheet and related statements of operations, cash flows, and stockholders’ deficit include all adjustments, consisting only of normal recurring items, necessary for their fair presentation in conformity with accounting principles generally accepted in the United States of America.

Principles of Consolidation

The consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries, BLEST, and Clyra Medical. Management believes Clyra Medical’s financial statements are appropriately consolidated with that of the Company after reviewing the Accounting Standards Codification (“ASC”), 810, “Consolidation” (“ASC 810), and concluding that BioLargo controls Clyra Medical. While BioLargo does not have voting interest control through a majority stock ownership of Clyra Medical (it owns 45% of the outstanding voting stock), it does exercise control under the “Variable Interest Model.” There is substantial board overlap, BioLargo is the primary beneficiary since it has the power to direct Clyra Medical’s activities that most significantly impact Clyra Medical’s performance, and it has the obligation to absorb losses or receive benefits (through royalties and licensing) that could be potentially significant to Clyra Medical. BioLargo has consolidated Clyra Medical’s operations for all periods presented. (See Note 9.)

All intercompany accounts and transactions have been eliminated in the financial statement presentation.

Foreign Currency

The Company has designated the functional currency of BioLargo Water, Inc., our Canadian subsidiary, to be the Canadian dollar. Therefore, translation gains and losses resulting from differences in exchange rates are recorded in accumulated other comprehensive income.

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less when acquired to be cash equivalents. Substantially all cash equivalents are held in short-term money market accounts at one of the largest financial institutions in the United States. From time to time, our cash account balances are greater than the Federal Deposit Insurance Corporation insurance limit of $250,000 per owner per bank, and during such times, we are exposed to credit loss for amounts in excess of insured limits in the event of non-performance by the financial institution. We do not anticipate non-performance by our financial institution.

As of June 30, 2021 and December 31, 2020, our cash balances were made up of the following (in thousands):

	June 30, 2021		December 31, 2020
BioLargo, Inc. and subsidiaries	$	1,338	$	637
Clyra Medical Technologies, Inc.		19		79
Total	$	1,357	$	716

Accounts Receivable

Trade accounts receivable are recorded net of allowances for doubtful accounts. Estimates for allowances for doubtful accounts are determined based on payment history and individual customer circumstances. The allowance for doubtful accounts as of  June 30, 2021 was $12,000 and at December 31, 2020, was $13,000.

Credit Concentration

We have a limited number of customers that account for significant portions of our revenue. During the six months ended June 30, 2021 and 2020, we had the following customers that accounted for more than 10% of consolidated revenues, as follows:

	June 30, 2021			June 30, 2020
Customer A		22	%		<10	%
Customer B		19	%		<10	%
Customer C		11	%		<10	%
Customer D		<10	%		13	%

We had three customers that each accounted for more than 10% of consolidated accounts receivable at June 30, 2021, and two customers at December 31, 2020, as follows:

	June 30, 2021			December 31, 2020
Customer C		31	%		<10	%
Customer D		17	%		<10	%
Customer E		11	%		<10	%
Customer F		<10	%		32	%
Customer G		<10	%		10	%

Inventory

Inventories are stated at the lower of cost or net realizable value using the average cost method. The allowance for obsolete inventory as of  June 30, 2021, and December 31, 2020, was $3,000. Inventories consisted of (in thousands):

	June 30, 2021		December 31, 2020
Raw material	$	91	$	111
Finished goods		171		166
Total	$	262	$	277

Other Assets

Other Assets consisted of security deposits of $35,000 related to our business offices.

Equity Method of Accounting

On March 20, 2020, we invested $100,000 into a South Korean entity (Odin Co. Ltd., “Odin”) pursuant to a Joint Venture agreement we had entered into with BKT Co. Ltd. and its U.S. subsidiary, Tomorrow Water. We received a 40% non-dilutive equity interest, and BKT and Tomorrow Water each received 30% equity interests for an aggregate $150,000 investment.

We account for our investment in the joint venture under the equity method of accounting. We have determined that while we have significant influence over the joint venture through our technology license and our position on the Board of Directors, we do not control the joint venture or are otherwise involved in managing the entity and we own less than a majority of the equity. Therefore, we record the asset on our consolidated balance sheet and record an increase or decrease the recorded balance by our percentage ownership of the profits or losses in the joint venture. The joint venture incurred a loss during the three and six months ended June 30, 2021, and our 40% ownership share reduced our investment interest by $10,000 and $23,000, respectively.

Impairment

Long-lived and definite lived intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected future undiscounted cash flows from the use of the asset and its eventual disposition is less than the carrying amount of the asset, then an impairment loss is recognized. The impairment loss is measured based on the fair value of the asset. Any resulting impairment is recorded as a reduction in the carrying value of the related asset in excess of fair value and a charge to operating results. For the three and six months ended June 30, 2021 and 2020, management determined that there was no impairment of its long-lived assets, including its In-process Research and Development (see Note 8).

Earnings (Loss) Per Share

We report basic and diluted earnings (loss) per share (“EPS”) for common and common share equivalents. Basic EPS is computed by dividing reported earnings by the weighted average shares outstanding. Diluted EPS is computed by adding to the weighted average shares the dilutive effect if stock options and warrants were exercised into common stock. For the three and six months ended June 30, 2021 and 2020, the denominator in the diluted EPS computation is the same as the denominator for basic EPS due to the anti-dilutive effect of the warrants and stock options on the Company’s net loss.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the period reported. Actual results could differ from those estimates. Estimates are used when accounting for stock-based transactions, debt transactions, derivative liabilities, allowance for bad debt, asset depreciation and amortization, among others.

The methods, estimates and judgments we use in applying these most critical accounting policies have a significant impact on the results of our financial statements.

Share-Based Compensation Expense

We recognize compensation expense for stock option awards on a straight-line basis over the applicable service period of the award, which is the vesting period. Fair value is determined on the grant date. Share-based compensation expense is based on the grant date fair value estimated using the Black-Scholes Option Pricing Model.

For stock and stock options issued to consultants and other non-employees for services, the Company measures and records an expense as of the earlier of the date at which either: a commitment for performance by the non-employee has been reached or the non-employee’s performance is complete. The equity instruments are measured at the current fair value, and for stock options, the instruments are measured at fair value using the Black Scholes option model.

The following methodology and assumptions were used to calculate share-based compensation for the six months ended June 30, 2021 and 2020:

	2021						2020
	Non Plan			2018 Plan			Non Plan		2018 Plan
Risk free interest rate		1.73	%	0.93	–	1.73%	0.88	%	0.88	–	1.90%
Expected volatility		124	%	123	–	124%	131	%	131	–	133%
Expected dividend yield		—			—		—			—
Forfeiture rate		—			—		—			—
Life in years		10			10		10			10

Expected price volatility is the measure by which our stock price is expected to fluctuate during the expected term of an option. Expected volatility is derived from the historical daily change in the market price of our common stock, as we believe that historical volatility is the best indicator of future volatility.

The risk-free interest rate used in the Black-Scholes calculation is based on the prevailing U.S. Treasury yield as determined by the U.S. Federal Reserve. We have never paid any cash dividends on our common stock and do not anticipate paying cash dividends on our common stock in the foreseeable future.

Historically, we have not had significant forfeitures of unvested stock options granted to employees and Directors. A significant number of our stock option grants are fully vested at issuance or have short vesting provisions. Therefore, we have estimated the forfeiture rate of our outstanding stock options as zero.

Warrants

Warrants issued with our convertible promissory notes, note payables, line of credit are accounted for under the fair value and relative fair value method.

The warrant is first analyzed per its terms as to whether it has derivative features or not. If the warrant is determined to be a derivative and not qualify for equity treatment, then it is measured at fair value using the Black Scholes option model, and recorded as a liability on the balance sheet. The warrant is re-measured at its then current fair value at each subsequent reporting date (it is “marked-to-market”).

If the warrant is determined to not have derivative features, it is recorded into equity at its fair value using the Black Scholes option model, however, limited to a relative fair value based upon the percentage of its fair value to the total fair value including the fair value of the convertible note.

Convertible debt instruments are recorded at fair value, limited to a relative fair value based upon the percentage of its fair value to the total fair value including the fair value of the warrant. Further, the convertible debt instrument is examined for any intrinsic beneficial conversion feature (“BCF”) of which the conversion price is less than the closing common stock price on date of issuance. If the relative fair value method is used to value the convertible debt instrument and there is an intrinsic BCF, a further analysis is undertaken of the BCF using an effective conversion price which assumes the conversion price is the relative fair value divided by the number of shares the convertible debt is converted into by its terms. The BCF value is accounted for as equity.

The warrant and BCF relative fair values are also recorded as a discount to the convertible promissory notes. At present, these equity features of the convertible promissory notes have recorded a discount to the convertible notes that is substantially equal to the proceeds received.

Non-Cash Transactions

We have established a policy relative to the methodology to determine the value assigned to each intangible we acquire, and/or services or products received for non-cash consideration of our common stock. The value is based on the market price of our common stock issued as consideration, at the date of the agreement of each transaction or when the service is rendered, or product is received.

Revenue Recognition

We account for revenue in accordance with ASC 606, “Revenue from Contacts with Customers”. The guidance focuses on the core principle for revenue recognition, which is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the guidance provides that an entity should apply the following steps:

Step 1: Identify the contract(s) with a customer.

Step 2: Identify the performance obligations in the contract.

Step 3: Determine the transaction price.

Step 4: Allocate the transaction price to the performance obligations in the contract.

Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation.

Products sold a through a contract with the customer and written purchase order, in which the details of the contract are defined including the transaction price and method of shipment. The only performance obligation is to create and ship the product and each product has separate pricing. Revenue is recognized at a point in time when the goods are shipped if the agreement is FOB manufacturer, and when goods are delivered if FOB destination. Revenue is recognized with a reduction for sales discounts, as appropriate and negotiated in the customer’s purchase order.

Service contracts are performed through a written contract, which specifies the performance obligations and the rate at which the services will be billed, typically by time and materials. Each service is separately negotiated and priced. Revenue is recognized as services are performed and completed, or, for services related to product installations, at the completion of the installation. A few contracts have called for milestone or fixed cost payments, where we invoice an agreed-to amount per month for the life of the contract. In these instances, completed work, billed hourly, is recognized as revenue. If the billing amount is greater or lesser than the completed work, a receivable or payable is created. These accounts are adjusted upon additional billings as the work is completed. To date, there have been no discounts or other financing terms for the contracts.

In the event that we generate revenues from royalties or license fees from our intellectual property, we anticipate a licensee would pay a license fee in one or more installments and ongoing royalties based on their sales of products incorporating or using our licensed intellectual property. Upon entering into a licensing agreement, we will determine the appropriate method of recognizing the royalty and license fees.

Clyra also has certain distribution agreements that call for consigned inventory. Although the product is shipped to a third party, it is not revenue until that consigned inventory is sold to end user customer.

Government Grants

We have been awarded multiple research grants from the Canadian National Research Institute – Industrial Research Assistance Program (NRC-IRAP) and the National Science and Engineering Research Council of Canada (NSERC). The grants received are considered other income and are included in our consolidated statements of operations. We received our first grant in 2015 and have been awarded over 80 grants totaling over $3.7 million. Some of the funds from these grants are given directly to third parties (such as the University of Alberta or a third-party research scientist) to support research on our technology. The grants have terms generally ranging between six and eighteen months and support a majority, but not all, of the related research budget costs. This cooperative research allows us to utilize (i) a depth of resources and talent to accomplish highly skilled work, (ii) financial aid to support research and development costs, (iii) independent and credible validation of our technical claims.

The grants typically provide for (i) recurring monthly amounts, (ii) reimbursement of costs for research talent for which we invoice to request payment, and (iii) ancillary cost reimbursement for research talent travel related costs. All awarded grants have specific requirements on how the money is spent, typically to employ researchers. None of the funds may be used for general administrative expenses or overhead in the United States. These grants have substantially increased our level of research and development activities in Canada. We continue to apply for Canadian government and agency grants to fund research and development activities. Not all of our grant applications have been awarded, and no assurance can be made that any pending grant application, or any future grant applications, will be awarded.

Income Taxes

The asset and liability approach is used to recognize deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of asset and liabilities. Deferred tax assets and liabilities are determined based on the differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The effect on deferred tax asset and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

We account for uncertainties in income tax law under a comprehensive model for the financial statement recognition, measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns as prescribed by generally accepted accounting principles (“GAAP”).  Under GAAP, the tax effects of a position are recognized only if it is “more-likely-than-not” to be sustained by the taxing authority as of the reporting date.  If the tax position is not considered “more-likely-than-not” to be sustained, then no benefits of the position are recognized.  Management believes there are no unrecognized tax benefits or uncertain tax positions as of June 30, 2021, and December 31, 2020.

The Company assessed its earnings history, trends and estimates of future earnings and determined that the deferred tax asset could not be realized as of June 30, 2021. Accordingly, a valuation allowance was recorded against the net deferred tax asset.

The Company recognizes interest and penalties on income taxes as a component of income tax expense, should such an expense be realized.

Fair Value of Financial Instruments

Management believes the carrying amounts of the Company’s financial instruments (excluding debt and equity instruments) as of June 30, 2021 and December 31, 2020, approximate their respective fair values because of the short-term nature of these instruments. Such instruments consist of cash, accounts receivable, prepaid assets, accounts payable, lines of credit, and other assets and liabilities.

Tax Credits

Our research and development activities in Canada may entitle our Canadian subsidiary to claim benefits under the “Scientific Research and Experimental Development Program”, a Canadian federal tax incentive program designed to encourage Canadian businesses of all sizes and in all sectors to conduct research and development in Canada. Benefits under the program include credits to taxable income. If our Canadian subsidiary does not have taxable income in a reporting period, we instead receive a tax refund from the Canadian Revenue Authority. Those refunds are classified in Other Income on our Consolidated Statement of Operations and Comprehensive Loss.

Leases

In accordance with ASC 842, the Company elects to use hindsight as a practical expedient with respect to determining the lease terms (as we considered our updated expectations of acceptance of the Westminster California facility lease renewal) and in assessing any impairment of right-of-use assets for existing leases. No impairment is expected at this time.  As of June 30, 2021, the right of use assets on our balance sheet related to our operating leases total $311,000.

Recent Accounting Pronouncements

In May 2021, the FASB issued Accounting Standards Update No. 2021-04, regarding accounting for certain modifications of written call options.

In August 2020, the FASB issued Accounting Standards Update No. 2020-06, “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging— Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity”. For convertible instruments, the FASB decided to reduce the number of accounting models for convertible debt instruments and convertible preferred stock. Limiting the accounting models results in fewer embedded conversion features being separately recognized from the host contract as compared with current GAAP. Convertible instruments that continue to be subject to separation models are (1) those with embedded conversion features that are not clearly and closely related to the host contract, that meet the definition of a derivative, and that do not qualify for a scope exception from derivative accounting and (2) convertible debt instruments issued with substantial premiums for which the premiums are recorded as paid-in capital. The FASB decided to amend the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions. The FASB observed that the application of the derivatives scope exception guidance results in accounting for some contracts as derivatives while accounting for economically similar contracts as equity. The FASB also decided to improve and amend the related EPS guidance. The amendments in this Update are effective for public business entities that meet the definition of a Securities and Exchange Commission (SEC) filer, excluding entities eligible to be smaller reporting companies as defined by the SEC, for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Management is currently evaluating the effect on the Company’s financials if and when future convertible securities are issued. This Update does not affect the Company’s current financial statements.

In January 2020, the FASB issued Accounting Standards Update No 2020-01, “Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815): Clarifying the Interactions between Topic 321, Topic 323, and Topic 815”. This Update relates to the Company’s equity method of accounting and the potential interactions between the measurement alternative in Topic 321 and the equity method of accounting in Topic 323 and that diverse views have emerged about the application of the measurement alternative and the equity method of accounting since the adoption of Update 2016-01.  The measurement alternative is the ability to measure certain equity securities without a readily determinable fair value at cost, minus impairment, if any. Paragraph 321-10-35-2, as amended, states that if an entity identifies observable price changes in orderly transactions for the identical or a similar investment of the same issuer, it should measure the equity security at fair value as of the date that the observable transaction occurred (hereinafter referred to as the measurement alternative). The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. Management adopted the updates, and after evaluation, did not make any modifications to the financial statements.

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Note 3 - Sale of Stock for Cash

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Stock Purchase Agreement [Text Block]

Note 3. Sale of Stock for Cash

Lincoln Park Financing

On March 30, 2020, we entered into a stock purchase agreement (the “Purchase Agreement”) with Lincoln Park Capital Fund, LLC (“Lincoln Park”), pursuant to which Lincoln Park agreed to purchase from us at our request up to an aggregate of $10,250,000 of our common stock (subject to certain limitations) from time to time over a period of three years. The agreement allows us, at our sole discretion, to direct Lincoln Park to purchase shares of our common stock, subject to limitations in both volume and dollar amount. The purchase price of the shares that may be sold to Lincoln Park under the agreement is the lower of (i) the lowest sale price on the date of purchase, or (ii) the average of the three lowest closing prices in the prior 12 business days. There are no restrictions on future financings, rights of first refusal, participation rights, penalties or liquidated damages other than a prohibition on entering into a “Variable Rate Transaction,” as defined in the agreement. This agreement replaced the August 2017 agreement with Lincoln Park. Concurrently with the Purchase Agreement, we entered into a Registration Rights Agreement, pursuant to which we filed a registration statement on Form S-1 with the SEC on April 10, 2020. This registration statement was declared effective on April 21, 2020, and as of April 29, 2020, we commenced regular purchases under the agreement. The Purchase Agreement replaced a similar agreement with Lincoln Park dated August 2017.

During the six months ended June 30, 2021 and 2020, we sold 18,526,309 and 3,198,358 shares, respectively, to Lincoln Park, and received $3,015,000 and $1,461,000, respectively, in gross and net proceeds. Subsequent to June 30, 2021, we continue to draw on the Purchase Agreement for working capital from time to time (see Note 13).

2020 Unit Offering

During the six months ended June 30, 2021 and 2020, pursuant to an offering commenced in March 2020, we sold 3,431,547 and 1,571,667 shares, respectively, of our common stock and received $505,000 and $242,000, respectively, in gross and net proceeds, from a total of six accredited investors. In addition to the shares, we issued each investor a six-month and a five-year warrant to purchase additional shares (see Note 6, “Warrants Issued in 2020 Unit Offering”).

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Note 4 - Debt Obligations

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Debt Disclosure [Text Block]

Note 4. Debt Obligations

The following table summarizes our debt obligations outstanding as of June 30, 2021, and December 31, 2020 (in thousands). The table does not include debt obligations of our partially owned subsidiary Clyra Medical (see Note 9, “Debt Obligations of Clyra Medical”).

	June 30, 2021 (Unaudited)			December 31, 2020
Current portion of debt:
Note payable, matures on demand 60 days’ notice (or March 8, 2023)	$	—		$	50
Line of credit, matures on 30-day demand		—			50
Total notes payable and line of credit	$	—		$	100
Convertible notes payable:
Convertible note payable, matures April 20, 2021	$	—		$	100
Convertible note payable, matures August 9, 2021		—			600
Convertible notes, mature August 12 and 16, 2021		—			406
Total convertible notes payable		—			1,106
Debt discount, net of amortization		—			(104	)
Total current liabilities		—			1,102
Long-term debt:
Convertible note payable, matures March 1, 2023	$	50		$	—
Debt discount, net of amortization		(29	)		—
SBA Paycheck Protection Program loans		314			357
SBA EIDL Loan		150			150
Total long-term liabilities		485			507
Total	$	485		$	1,609

For the six months ended June 30, 2021 and 2020, we recorded $182,000 and $1,504,000, respectively, of interest expense related to the amortization of discounts on convertible notes payable, and coupon interest from our note payable, convertible notes and line of credit.

The following discussion includes debt instruments to which amendments were made or included other activity that management deemed appropriate to disclose during the six months ended June 30, 2021 and 2020. Each of the debt instruments contained in the above table are disclosed more fully in the financial statements contained in the Company’s Form 10-K filed March 30, 2021.

Cash payment of debt obligations

On May 17, 2021, we paid $178,000 in cash to Vernal Bay Investments, LLC, as payment of one-half the outstanding principal on the convertible note scheduled to mature on August 12, 2021. In addition, we issued 1,272,321 shares of our common stock to pay the remaining principal and interest due on the note.

On March 1, 2021, we paid in cash the outstanding principal of $600,000 on the promissory note issued August 9, 2019, and scheduled to mature on August 9, 2021.

On March 1, 2021, we paid in cash the outstanding principal of $50,000 on the remaining amount due on a line of credit in which was due on demand at any time after September 1, 2019. There is no remaining balance on this line of credit, and we no longer have the ability to draw on the line of credit.

Conversion of Debt into shares of common stock

On May 18, 2021, we converted to equity a promissory note, that was scheduled to mature on August 18, 2021, in the principal balance of $50,000 into 294,118 shares of our common stock.

On its maturity date of April 20, 2021, we converted to equity a promissory note in the principal balance of $100,000 into 400,000 shares of our common stock.

Amendment to Note payable matures on 60 days’ notice (or March 8, 2023)

On March 1, 2021, we and the holder of a $50,000 note payable modified the note to set a specific maturity date of March 1, 2023, and allow the investor to convert the note to our common stock at a price of $0.16 per share. In lieu of interest during the extended period of the note, we issued the investor a stock purchase warrant (see Note 6).

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Note 5 - Share-based Compensation

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Compensation and Employee Benefit Plans [Text Block]

Note 5. Share-Based Compensation

Issuance of Common Stock in exchange for payment of payables

Payment of Officer Salaries

On March 31, 2021, we issued 137,364 shares of our common stock at $0.23 per share in lieu of $31,000 of accrued and unpaid salary to our officers.

On June 30, 2020, we issued 367,403 shares of our common stock at $0.16 per share in lieu of $59,000 of accrued and unpaid salary to our officers. On March 31, 2020, we issued 648,755 shares of our common stock at $0.17 per share in lieu of $110,000 of accrued and unpaid salary to our officers.

Payment of Consultant Fees

On June 30, 2021, we issued 357,132 shares of our common stock at $0.17 per share in lieu of $60,000 of accrued and unpaid obligations to consultants. On March 31, 2021, we issued 610,123 shares of our common stock at $0.23 per share in lieu of $81,000 of accrued and unpaid obligations to consultants.

On June 30, 2020, we issued 1,406,630 shares of our common stock at $0.16 per share in lieu of $213,000 of accrued and unpaid salary to consultants. On March 31, 2020, we issued 390,735 shares of our common stock at $0.17 per share in lieu of $67,000 of accrued and unpaid obligations to consultants.

Payment of Accrued Interest

During the three months ended June 30, 2021, we issued 81,777 shares of our common stock at $0.17 per share in lieu of $16,000 of accrued and unpaid interest.

On June 30, 2020, we issued 594,428 shares of our common stock at $0.16 per share in lieu of $30,000 of accrued and unpaid interest.  On March 31, 2020, we issued 19,278 shares of our common stock at $0.17 per share in lieu of $4,000 of accrued interest.

Stock Option Expense

During the six months ended June 30, 2021 and 2020, we recorded an aggregate $754,000 and $848,000, in selling general and administrative expense related to the issuance of stock options. We issued options through our 2018 Equity Incentive Plan, our now expired 2007 Equity Incentive Plan, and outside of these plans. See Note 9 for information on stock option expense for options issued by subsidiary Clyra.

2018 Equity Incentive Plan

On June 22, 2018, our stockholders adopted the BioLargo 2018 Equity Incentive Plan (“2018 Plan”) as a means of providing our directors, key employees and consultants additional incentive to provide services. Both stock options and stock grants may be made under this plan for a period of 10 years. Our Board of Director’s Compensation Committee administers this plan. As plan administrator, the Compensation Committee has sole discretion to set the price of the options. The plan authorizes the following types of awards: (i) incentive and non-qualified stock options, (ii) restricted stock awards, (iii) stock bonus awards, (iv) stock appreciation rights, (v) restricted stock units, and (vi) performance awards. The total number of shares reserved and available for awards pursuant to this Plan as of the date of adoption of this 2018 Plan by the Board is 40 million shares. The number of shares available to be issued under the 2018 Plan increases automatically each January 1st by the lesser of (a) 2 million shares, or (b) such number of shares determined by our Board.

Activity for our stock options under the 2018 Plan for the six months ended June 30, 2021 and June 30, 2020, is as follows:

							Weighted
							Average		Aggregate
	Options			Exercise			Price per		intrinsic
	Outstanding			Price per share			share		Value(1)
Balance, December 31, 2020		18,865,525		$0.16	–	0.40	$	0.19
Granted		2,483,691		0.13	–	0.23		0.19
Expired		—			—			—
Balance, June 30, 2021		21,349,216		$0.12	–	0.43	$	0.19
Non-vested		(4,218,833	)	0.12	–	0.40		0.23
Vested, June 30, 2021		17,130,383		$0.12	–	0.43	$	0.18	$	250,000
Balance, December 31, 2019		9,214,356		$0.16	–	0.43	$	0.25
Granted		8,610,689		0.17	–	0.22		0.19
Expired		(200,000	)	0.18	–	0.34		0.26
Balance, June 30, 2020		17,625,045		$0.16	–	0.43	$	0.20

(1) Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021.

The options granted to purchase 2,483,691 shares during the six months ended June 30, 2021 were issued to an officer, board of directors, employees and consultants: (i) we issued options to purchase 300,000 shares of our common stock at an exercise price on the respective grant date of $0.17 per share to our CFO as described below; (ii) we issued options to purchase 693,762 shares of our common stock at an exercise price on the respective grant date of $0.17 and $0.23 per share to members of our board of directors for services performed, in lieu of cash; the fair value of these options totaled $130,000, and is recorded as selling, general and administrative expenses; (iii) we issued options to purchase 1,298,411 shares of our common stock to employees as part of an employee retention and expiring options plan at exercises price on the respective date ranging between $0.17 and $0.23 per share; the fair value of employee retention plan options totaled $234,000 and will vest quarterly over four years as long as they are retained as employees; and (iv) we issued options to purchase 191,518 shares of our common stock to consultants and employees in lieu of cash for unpaid obligations totaling $35,000. All stock option expense is recorded on our consolidated statement of operations as selling, general and administrative expense.

The options granted under the 2018 Plan to purchase 8,610,689 shares during the six months ended June 30, 2020 were issued to officers, board of directors, employees and consultants: (i) we issued options to purchase 4,880,945 shares of our common stock at an exercise price of $0.14 per share to employees and consultants as a bonus during the pandemic. These options vest quarterly over one year and the fair value totaled $656,000 (ii) we issued options to purchase 457,500 shares of our common stock at an exercise price range of $0.14 – $0.21 per share to our CFO , with 177,500 shares having vested during the six months ended June 30, 2020, and the remaining shares to vest 25,000 monthly through January 31, 2021; (ii) we issued options to purchase 821,434 shares of our common stock at an exercise price on the respective grant date of $0.17 and $0.16 per share to members of our board of directors for services performed, all options vested at issuance and the fair value of these options totaled $130,000; (iii) we issued options to purchase 939,332 shares of our common stock to employees as part of an employee retention plan at an exercise price on the respective date of $0.17 and $0.16 per share; the fair value of employee retention plan options totaled $151,000 and vest quarterly over four years as long as they are retained as employees; (iv) we issued options to purchase 449,286 shares of our common stock to consultants in lieu of cash for unpaid obligations totaling $65,000; and (v) we issued options to purchase 1,062,192 shares of common stock at an exercise price ranging between $0.14 – $0.17 per share to employees to convert accrued and unpaid obligations and for previously issued options that expire. All of these options vested at issuance and the fair value totaled $145,000, All stock option expense is recorded on our consolidated statement of operations as selling, general and administrative expense.

Chief Financial Officer Contract Extension

On March 17, 2021, we and our Chief Financial Officer Charles K. Dargan, II, formally agreed to extend the engagement agreement dated February 1, 2008 (the “Engagement Agreement”, which had been previously extended multiple times), pursuant to which Mr. Dargan has been and continues to serve as the Company’s Chief Financial Officer. The Engagement Extension Agreement dated as of February 25, 2020 (the “Engagement Extension Agreement”) provides for an additional term to begin retroactively on October 1, 2019, and to expire January 31, 2021 (the “Extended Term”).

As compensation for the Extended Term, Mr. Dargan was issued an option (“Option”) to purchase 300,000 shares of our common stock. The Option vests over the period of the Extended Term, with 125,000 shares having vested as of June 30, 2021, and the remaining 175,000 shares to vest monthly through January 31, 2022, so long as the agreement is in full force and effect. The Option is exercisable at $0.23 per share, the closing price of our common stock on March 17, 2021, expires ten years from the grant date, and was issued pursuant to the 2018 Equity Incentive Plan. The fair value of these options totaled $49,000, which expense is recorded ratably over the twelve-month agreement term.

The Option is Mr. Dargan’s sole compensation for the Extended Term. As was the case in all prior terms of his engagement, there is no cash component of his compensation for the Extended Term. Mr. Dargan is eligible to be reimbursed for business expenses he incurs in connection with the performance of his services as the Company’s Chief Financial Officer (although he has made no such requests for reimbursement in the past). All other provisions of the Engagement Agreement not expressly amended pursuant to the Engagement Extension Agreement remain the same, including provisions regarding indemnification and arbitration of disputes.

2007 Equity Incentive Plan

On September 7, 2007, and as amended April 29, 2011, the BioLargo, Inc. 2007 Equity Incentive Plan (“2007 Plan”) was adopted as a means of providing our directors, key employees and consultants additional incentive to provide services. Both stock options and stock grants may be made under this plan for a period of 10 years, which expired on September 7, 2017. The Board’s Compensation Committee administers this plan. As plan administrator, the Compensation Committee has sole discretion to set the price of the options. As of September 2017, the Plan was closed to further stock option grants.

Activity for our stock options under the 2007 Plan for the six months ended June 30, 2021 and 2020 is as follows:

							Weighted
							Average		Aggregate
	Options			Exercise			Price per		intrinsic
	Outstanding			price per share			share		Value(1)
Balance, December 31, 2020		5,689,363		$0.23	-	0.94	$	0.44
Expired		(1,453,855	)	0.39	-	0.51		0.40
Balance, June 30, 2021		4,235,508		$0.23	-	1.65	$	0.45	$	—
Balance, December 31, 2019		8,769,451		$0.23	–	0.94	$	0.42
Expired		(930,000	)	0.39	–	0.58		0.56
Balance, June 30, 2020		7,839,451		$0.23	–	1.65	$	0.41

(1) – Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021.

Non-Plan Options issued

Activity of our non-plan stock options issued for the six months ended June 30, 2021 and 2020 is as follows:

							Weighted
	Non-plan						average		Aggregate
	Options			Exercise			price per		Intrinsic
	outstanding			price per share			share		value(1)
Balance, December 31, 2020		20,749,583		$0.17	–	1.00	$	0.41
Granted		43,956			0.23			0.23
Balance, June 30, 2021		20,793,539		$0.17	–	1.00	$	0.41
Non-vested		(1,996,576	)	0.17	–	0.45		0.45
Vested, June 30, 2021		18,796,963		$0.17	–	1.00	$	0.41	$	28,000
Balance, December 31, 2019		19,604,107		$0.23	–	1.00	$	0.41
Granted		292,437		0.17	–	0.21		0.18
Balance, June 30, 2020		19,896,544		$0.17	–	1.00	$	0.41

(1) – Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021.

During the six months ended June 30, 2021, we issued an option to purchase 43,956 shares of our common stock at $0.23 per share to a vendor for services. The fair value of these options total $10,000 and is recorded in our selling, general and administrative expense.

During the six months ended June 30, 2020, we issued options to purchase 292,437 shares of our common stock at exercise prices ranging between $0.17 – $0.21 per share to vendors for fees for service. The fair value of the options issued totaled $50,000, is recorded in our selling, general and administrative expense.

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Note 6 - Warrants

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Warrants [Text Block]

Note 6. Warrants

We issued warrants to purchase our common stock, at various prices for the six months ended June 30, 2021 and 2020, is as follows:

							Weighted
							average		Aggregate
	Warrants			Exercise			price per		Intrinsic
	outstanding			price per share			share		value(1)
Balance, December 31, 2020		32,980,989		$0.16	–	1.00	$	0.29
Issued		7,088,094		0.14	–	0.26		0.20
Expired		(1,046,528	)	0.19	–	0.35		0.24
Balance, June 30, 2021		39,022,555		$0.14	–	1.00	$	0.27	$	140,000
Balance, December 31, 2019		43,231,161		$0.16	–	1.00	$	0.42
Issued		3,934,592		0.13	-	0.24		0.13
Expired		(14,272,820	)	0.40	-	0.49		0.30
Balance, June 30, 2020		32,892,933		$0.16	–	1.00	$	0.35

(1) Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021

Warrants issued in 2020 Unit Offering

During the six months ended June 30, 2021, pursuant to our 2020 Unit Offering (see Note 3), we issued six-month stock purchase warrants to purchase an aggregate 3,431,547 shares of our common stock at exercise prices between $0.14 – 0.21 per share, and five-year stock purchase warrants to purchase an aggregate 3,431,547 shares of our common stock at exercise prices between $0.18 – 0.24 per share.

Warrant issued in conjunction with amendment to note payable

On March 1, 2021, we and the holder of a $50,000 note payable modified the note (see Note 4). In lieu of interest during the extended period of the note, we issued the investor a warrant to purchase 225,000 shares of our common stock at $0.16 per share for a period of five years.  The fair value of these warrants totaled $35,000 and is recorded as a debt discount on our consolidated balance sheets, of which amount will be amortized to interest expense over the two-year term of the debt.

Fair Value – Interest Expense

To determine interest expense related to our outstanding warrants issued in conjunction with debt offerings, the fair value of each award grant is estimated on the date of grant using the Black-Scholes option pricing model and the relative fair values are amortized over the life of the warrant. For the determination of expense of warrants issued for services, extinguishment of debt and settlement, management also uses the option-pricing model. The principal assumptions we used in applying this model were as follows:

	June 30, 2021				June 30, 2020
Risk free interest rate			0.71%				0.23%
Expected volatility			100%				112
Expected dividend yield			—				—
Forfeiture rate			—				—
Expected life in years		.5	–	5		0.33	–	5

The risk-free interest rate is based on U.S. Treasury yields in effect at the time of grant. Expected volatilities are based on historical volatility of our common stock. The expected life in years is based on the contract term of the warrant.

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Note 7 - Accounts Payable and Accrued Expenses

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Accounts Payable and Accrued Liabilities Disclosure [Text Block]

Note 7. Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses for our operations other than our partially-owned subsidiary Clyra Medical included the following (in thousands):

	June 30, 2021		December 31, 2020
Accounts payable and accrued expense	$	145	$	315
Accrued interest		25		42
Accrued payroll		161		156
Total accounts payable and accrued expenses	$	331	$	513

Accounts payable and accrued expenses includes ordinary business payables incurred by the Company and its operational subsidiaries. See Note 9, “Accounts Payable and Accrued Expenses”, for the accounts payable and accrued expenses of Clyra Medical.

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Note 8 - In-process Research and Development

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

In Process Research and Development [Text Block]

Note 8. In-process Research and Development

On September 26, 2018, BioLargo and Clyra Medical entered into a transaction (the “Scion Transaction”) whereby BioLargo would acquire, and then license back to Clyra, the intangible assets of Scion Solutions, LLC (“Scion”), and in particular its in-process research and development of the “SkinDisc,” a method for treating advanced hard-to-treat wounds including diabetic ulcers. In addition to a pending patent application, the assets included the technical know-how and data developed by the Scion team.

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Note 9 - Noncontrolling Interest - Clyra Medical

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Noncontrolling Interest Disclosure [Text Block]

Note 9. Noncontrolling Interest – Clyra Medical

As discussed in Note 2, we consolidate the operations of our partially owned subsidiary Clyra Medical, of which we owned 45% of its outstanding shares as of June 30, 2021.

Acquisition of In-process Research and Development

On September 26, 2018, Clyra Medical entered into a transaction with Scion Solutions, LLC, for the purchase of its intellectual property, including its SkinDisc. The consideration provided to Scion is subject to an escrow agreement (“Escrow Agreement”) and earn out provisions and includes: (i) 21,000 shares of the Clyra Medical common stock; (ii) 10,000 shares of Clyra Medical common stock redeemable for 7,142,858 BioLargo common shares (detailed below); and (iii) a promissory note in the principal amount of $1,250,000 to be paid through new capital investments and revenue, as detailed below. This consideration was initially held in escrow pending Clyra Medical raising $1 million “base capital” to fund its business operations.

On December 17, 2018, the parties entered into a closing agreement (“Closing Agreement”) reflecting the satisfaction of the obligation to raise $1 million “base capital”; at that time, one-half of the shares of Clyra Medical common stock exchanged for the Scion assets were released to Scion. The remaining Clyra Medical common shares remain subject to the Escrow Agreement’s performance metrics, each vesting one-fifth of the remaining shares of common stock: (a) notification of FDA premarket clearance of certain orthopedics products, or recognition by Clyra Medical of $100,000 gross revenue; (b) the recognition by Clyra Medical of $100,000 in aggregate gross revenue; (c) the granting of all or any part of the patent application for the SkinDisc product, or recognition by Clyra Medical of $500,000 in gross revenue; (d) recognition by Clyra Medical of $1 million in aggregate gross revenue; and (e) recognition by Clyra Medical of $2 million in gross revenue. As of June 30, 2021, a total of 9,300 shares remain in escrow, the difference having been vested in accordance with the performance metrics.

Debt Obligations of Clyra Medical

Note Payable (Scion)

In conjunction with the transaction in which certain intellectual property was purchased from Scion, Clyra issued a promissory note to Scion in the principal amount of $1,250,000 on September 26, 2018 (“Clyra-Scion Note”), accruing interest at an annual rate of 5%. Clyra is obligated to make principal and interest payments periodically, based on a percent (25%) of investment proceeds, and 5% of revenues. Payments are due annually each June 26th until paid. At June 30, 2021 and December 31, 2020, the balance due on the Clyra Medical Note Payable totaled $1,007,000. On June 26, 2021, the maturity date of the note automatically extended by one year, to June 26, 2022.

Inventory Line of Credit

On June 30, 2020, Clyra entered into a one-year revolving Line of Credit Agreement whereby Vernal Bay Capital Group, LLC committed to provide a $1,000,000 inventory line of credit to Clyra.  Clyra has received $260,000 in draws since the inception of the line of credit.

Clyra is required to use funds from the line of credit to produce inventory. Additional draws are conditional upon Clyra presenting invoices or purchase orders to the lender equal to the greater of one-half of principal outstanding on the line of credit, and $200,000.  The line of credit note earns interest at 15%, matures in one year, and requires Clyra pay interest and principal from gross product sales. For the first 180 days, on a monthly basis, Clyra is required to pay 30% of gross product sales to reduce amounts owed, and thereafter 60% of gross sales. Clyra issued Vernal Bay 323 shares of its common stock as a commitment fee for the line of credit, valued at $70,000. A security agreement of the same date grants Vernal Bay a security interest in Clyra’s inventory, as that term is defined in the Uniform Commercial Code. Clyra may prepay the note at any time.

During the six months ended June 30, 2021, we made payments on the line of credit totaling $24,000. In April, 2021, Vernal agreed to extend the maturity date by one year, to June 30, 2022. Clyra agreed to make interest-only payments through August 31, 2021, and then, in addition to interest payments, principal payments equal to the greater of (i) $7,500 and (ii) 40% of product sales beginning September 2021, for six months, and thereafter the greater of (i) $7,500 and (ii) 60% of product sales.

As of June 30, 2021, the balance outstanding on this line of credit totals $200,000.

Prepaid Marketing - Consulting Agreement

On December 30, 2015, Clyra entered into a consulting agreement with Beach House Consulting, LLC, through which Jack B. Strommen will be providing consulting services to Clyra related to its sales and marketing activities, and in exchange receive $23,000 per month for a period of four years. On June 30, 2020, at Clyra’s request, Beach House Consulting agreed to accept 3,639 shares of Clyra common stock, in lieu of cash, as full prepayment of the consulting fee. The obligation to provide the consulting services is dependent on Clyra generating an average of $250,000 in monthly sales over three consecutive months, which has not been met. The value of the shares issued to Beach House totaled $788,000 and is recorded as a non-current asset (prepaid marketing) on our balance sheet.

Clyra Medical Equity transactions

As of June 30, 2021, Clyra Medical had the following common shares outstanding:

Shareholder	Shares		Percent
BioLargo, Inc.		49,207		45	%
Sanatio Capital		18,704		17	%
Scion Solutions(1)		21,700		20	%
Other		19,280		18	%
Total		108,891

The above amounts do not include an additional 9,300 shares held in escrow subject to performance metrics that have not been met.

Sales of Common Shares

During the six months ended June 30, 2021 and 2020, Clyra raised $50,000 and $849,000 at $310 per Clyra share.

Stock Options

Clyra issues options to its employees and consultants in lieu of compensation owed on a regular basis. As of December 31, 2020, the Company had issued options to purchase 11,411 shares of Clyra stock. During the six months ended June 30, 2021 and 2020, Clyra issued options to purchase 1,248 and 1,945 shares of its common stock, respectively. Each option issued has an exercise price of $1.00 per share, are vested upon issuance and an expiration date 10 years from the date of grant. The fair value of the options issued in in the six months ended June 30, 2021 and 2020 totaled $263,000 and $441,000, respectively. We used the Black-Scholes model to calculate the initial fair value, assuming a stock price on date of grant of $310 per share. Because Clyra is a private company with no secondary market for its common stock, the resulting fair value was discounted by 30%.

Clyra Accounts Payable and Accrued Expenses

Clyra had the following accounts payable and accrued expenses as follows:

	June 30, 2021		December 31, 2020
Accounts payable and accrued expense	$	582	$	402
Accrued interest		127		32
Accrued payroll		51		102
Total Clyra Medical accounts payable and accrued expenses	$	760	$	536

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Note 10 - BioLargo Engineering, Science and Technologies, LLC

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Wholly-Owned Subsidiary [Text Block]

Note 10. BioLargo Engineering, Science and Technologies, LLC

In September 2017, we commenced a full-service environmental engineering firm and formed a Tennessee entity named BioLargo Engineering, Science & Technologies, LLC (“BLEST”). In conjunction with the start of this subsidiary, we entered into a three-year office lease in the Knoxville, Tennessee area, and entered into employment agreements with six scientists and engineers. (See Note 11, “Business Segment Information”.) The company was capitalized with two classes of membership units: Class A, 100% owned by BioLargo, and Class B, held by management of BLEST, and which initially have no “profit interest,” as that term is defined in Tennessee law. However, over the succeeding five years, the Class B members can earn up to a 30% profit interest. They also have been granted options to purchase up to an aggregate 1,750,000 shares of BioLargo, Inc. common stock. The profit interest and option shares are subject to a five year vesting schedule tied to the performance of the subsidiary, including gross revenue targets that increase over time, obtaining positive cash flow by March 31, 2018 (which was not met), collecting 90% of its account receivables, obtaining a profit of 10% in its first year (and increasing in subsequent years), making progress in the scale-up and commercialization of our AOS system, and using BioLargo research scientists (such as our Canadian team) for billable work on client projects. These criteria are to be evaluated annually by BLEST’s compensation committee (which includes BioLargo’s president, CFO, and BLEST’s president), beginning September 2018. Given the significant performance criteria, the Class B units and the stock options will only be recognized in compensation expense if or when the criteria are satisfied.

The BLEST Compensation Committee has met regularly since the subsidiary commenced operations. In 2018, it reviewed the operating performance and determined that the performance metrics were not met and as a result, did not award any Class B units or stock options. In November 2019, it determined that a portion of the performance metrics were met, and that one-half of the eligible profits interests would be vested (2.5% in the aggregate), and therefore one-half of the option interests (10%) would be vested (175,000 options shares in the aggregate). The vesting of option shares resulted in a fair value totaling $44,000, recorded on our consolidated statement of operations as selling, general and administrative expense. The fair value of the profit interest was nominal and not booked. In January 2021, the committee again reviewed the operating performance and determined that a portion of the performance metrics were met. It was agreed that one-half and one-quarter of the eligible profits interests would be vested (3.75% in the aggregate), and therefore one-half of the option interests (15%) would be vested (262,500 options shares in the aggregate). The vesting of option shares resulted in a fair value totaling $65,000, recorded on our consolidated statement of operations as selling, general and administrative expense for the year ended December 31, 2020. No additional meetings or evaluations have taken place as of June 30, 2021.

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Note 11 - Business Segment Information

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Segment Reporting Disclosure [Text Block]

Note 11. Business Segment Information

BioLargo currently has four operating business segments, plus its corporate entity which is responsible for general corporate operations, including administrative functions, finance, human resources, marketing, legal, etc. The four operational business segments are:

1. ONM Environmental (formerly Odor-No-More) (“ONM”) -- which sells odor and volatile organic control products and services (located in Westminster, California);

2. Clyra Medical Technologies (“Clyra”) -- which develops and sells medical products based on our technologies, including Clyraguard Personal Protective Spray;

3. BLEST -- which provides professional engineering services on a time and materials basis for outside clients and supports our internal operations as needed (located in Oak Ridge, Tennessee); and

4. BioLargo Water (“Water”) -- which historically focused entirely on R&D, and has now shifted its focus to commercializing the AOS technology, developing manufacturing operations for hand sanitizers and supporting the development of iodine based disinfecting products for the company (located in Edmonton, Alberta Canada).

Historically, none of our operating business units have operated at a profit and therefore each required additional cash to meet its monthly expenses. The additional sources of the cash to fund the shortfall from operations of ONM, BLEST and BioLargo Water have been provided by BioLargo’s sales of debt or equity, research grants, and tax credits. Clyra Medical has been funded by third party investors who invest directly in Clyra Medical in exchange for equity ownership in that entity.

The segment information for the three and six months ended June 30, 2021 and 2020, is as follows (in thousands):

	Three months ended June 30,						Six months ended June 30,
	2021			2020			2021			2020
Revenue
BioLargo corporate	$	—		$	—		$	7		$	—
ONM		318			299			638			596
BLEST		266			160			654			444
Water		—			—			9			—
Clyra Medical		—			21			114			21
Intersegment revenue		(120	)		(62	)		(387	)		(205	)
Total	$	464		$	418		$	1,035		$	856
Operating loss
BioLargo corporate	$	(937	)	$	(1,129	)	$	(1,860	)	$	(1,936	)
ONM		(107	)		(134	)		(283	)		(287	)
Clyra Medical		(300	)		(422	)		(739	)		(728	)
BLEST		(190	)		(124	)		(373	)		(331	)
Water		(168	)		(196	)		(305	)		(424	)
Total	$	(1,702	)	$	(2,005	)	$	(3,560	)	$	(3,706	)
Interest expense
BioLargo corporate	$	(51	)	$	(735	)	$	(106	)	$	(1,479	)
Clyra Medical		(38	)		(12	)		(76	)		(25	)
Total	$	(89	)	$	(747	)	$	(182	)	$	(1,504	)
Research and development expense
BioLargo corporate	$	(209	)	$	(119	)	$	(545	)	$	(321	)
Clyra Medical		(6	)		(47	)		(33	)		(61	)
BLEST		(123	)		(85	)		(228	)		(166	)
Water		(138	)		(137	)		(257	)		(317	)
Intersegment R&D		120			38			380			181
Total	$	(356	)	$	(350	)	$	(683	)	$	(684	)

The segment asset information for June 30, 2021 and December 31, 2020, is as follows (in thousands):

As June 30, 2021	BioLargo		ONM		Clyra		BLEST		Water		Elimination			Total
Tangible assets	$	1,072	$	431	$	1,016	$	321	$	151	$	(47	)	$	2,944
Right of use		185		—		—		126		—		—			311
Investment in South Korean joint venture		40		—		—		—		—		—			40
Intangible assets		2,150		—		—		—		—		—			2,150

As of December 31, 2020	BioLargo		ONM		Clyra		BLEST		Water		Elimination			Total
Tangible assets	$	603	$	624	$	1,125	$	314	$	105	$	(42	)	$	2,388
Right of use		215		—		—		126		—		—			341
Investment in South Korean joint venture		63		—		—		—		—		—			63
Intangible assets		2,150		—		—		—		—		—			2,150

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Note 12 - Commitments and Contingencies

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Commitments and Contingencies Disclosure [Text Block]

Note 12. Commitments and Contingencies

Office Leases

We have long-term operating leases for office, industrial and laboratory space in Westminster, California, Oak Ridge, Tennessee, and Alberta, Canada. Payments made under operating leases are charged to the Consolidated Statement of Operations and Comprehensive Loss on a straight-line basis over the term of the operating lease agreement. For the six months ended June 30, 2021 and 2020, rental expense was $113,000 and $114,000, respectively.  As of June 30, 2021, our weighted average remaining lease term is three years and the total remaining operating lease payments is $434,000.

On January 1, 2019, we adopted ASC 842 which resulted in a right-of-use asset and lease liability. Short-term leases are not included in our analysis. The adoption resulted in an immaterial cumulative effect of an accounting change that was not recorded.  The lease of our Westminster facility qualifies for the new treatment; it originated in August 2016, was originally scheduled to expire August 2020, contains a yearly escalation of 3%, and includes a four-year renewal option whereby the base rent is adjusted to then market value. During 2020, we exercised our option to extend the lease for four years. It is too early for management to determine if it will extend another four years, therefore the additional four-year extension is not included in the analysis. The lease of our Oak Ridge, Tennessee facility also qualifies, and it had one three-year extension to September 2022, and has one renewal option for another five years where the rental rate would adjust to greater of the current price and fair market value. No determination has been made whether to exercise the five-year renewal option for the Oak Ridge facility. The lease of our Canadian facility is less than one year. None of our leases have additional terms related to the payments or mechanics of the lease. The leases have no additional payment terms such as common area maintenance payments, tax sharing payments or other allocable expenses. Likewise, the leases do not contain other terms and conditions of use, such as variable lease payments, residual value guaranties or other restrictive financial terms. Since there is no explicit interest rate in our leases, management used its incremental borrowing rate, which is estimated to be 18% to determine lease liability.

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Note 13 - Subsequent Events

6 Months Ended

Jun. 30, 2021

Notes to Financial Statements

Subsequent Events [Text Block]

Note 13. Subsequent Events.

Management has evaluated subsequent events through the date of the filing of this Annual Report and management noted the following for disclosure.

Sales to Lincoln Park

From July 1, 2021, through August 9, 2021, we sold 884,391shares of our common stock to Lincoln Park (see Note 3), and received $164,000 in gross and net proceeds.

Unit Offering Investment

From July 1, 2021, through August 12, 2021, we received one investment in our 2020 Unit Offering (see Note 3) of $70,000 and issued 388,889 shares of common stock, a six-month warrant to purchase 388,889 shares of common stock at $0.216 per share, and a five-year warrant to purchase 388,889 shares of common stock at $0.27 per share.

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Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2021

Accounting Policies [Abstract]

Consolidation, Policy [Policy Text Block]

Principles of Consolidation

The consolidated financial statements include the accounts of the Company, its wholly owned subsidiaries, BLEST, and Clyra Medical. Management believes Clyra Medical’s financial statements are appropriately consolidated with that of the Company after reviewing the Accounting Standards Codification (“ASC”), 810, “Consolidation” (“ASC 810), and concluding that BioLargo controls Clyra Medical. While BioLargo does not have voting interest control through a majority stock ownership of Clyra Medical (it owns 45% of the outstanding voting stock), it does exercise control under the “Variable Interest Model.” There is substantial board overlap, BioLargo is the primary beneficiary since it has the power to direct Clyra Medical’s activities that most significantly impact Clyra Medical’s performance, and it has the obligation to absorb losses or receive benefits (through royalties and licensing) that could be potentially significant to Clyra Medical. BioLargo has consolidated Clyra Medical’s operations for all periods presented. (See Note 9.)

All intercompany accounts and transactions have been eliminated in the financial statement presentation.

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Foreign Currency

The Company has designated the functional currency of BioLargo Water, Inc., our Canadian subsidiary, to be the Canadian dollar. Therefore, translation gains and losses resulting from differences in exchange rates are recorded in accumulated other comprehensive income.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents

The Company considers all highly liquid investments with maturities of three months or less when acquired to be cash equivalents. Substantially all cash equivalents are held in short-term money market accounts at one of the largest financial institutions in the United States. From time to time, our cash account balances are greater than the Federal Deposit Insurance Corporation insurance limit of $250,000 per owner per bank, and during such times, we are exposed to credit loss for amounts in excess of insured limits in the event of non-performance by the financial institution. We do not anticipate non-performance by our financial institution.

As of June 30, 2021 and December 31, 2020, our cash balances were made up of the following (in thousands):

	June 30, 2021		December 31, 2020
BioLargo, Inc. and subsidiaries	$	1,338	$	637
Clyra Medical Technologies, Inc.		19		79
Total	$	1,357	$	716

Receivable [Policy Text Block]

Accounts Receivable

Trade accounts receivable are recorded net of allowances for doubtful accounts. Estimates for allowances for doubtful accounts are determined based on payment history and individual customer circumstances. The allowance for doubtful accounts as of  June 30, 2021 was $12,000 and at December 31, 2020, was $13,000.

Concentration Risk, Credit Risk, Policy [Policy Text Block]

Credit Concentration

We have a limited number of customers that account for significant portions of our revenue. During the six months ended June 30, 2021 and 2020, we had the following customers that accounted for more than 10% of consolidated revenues, as follows:

	June 30, 2021			June 30, 2020
Customer A		22	%		<10	%
Customer B		19	%		<10	%
Customer C		11	%		<10	%
Customer D		<10	%		13	%

We had three customers that each accounted for more than 10% of consolidated accounts receivable at June 30, 2021, and two customers at December 31, 2020, as follows:

	June 30, 2021			December 31, 2020
Customer C		31	%		<10	%
Customer D		17	%		<10	%
Customer E		11	%		<10	%
Customer F		<10	%		32	%
Customer G		<10	%		10	%

Inventory, Policy [Policy Text Block]

Inventory

Inventories are stated at the lower of cost or net realizable value using the average cost method. The allowance for obsolete inventory as of  June 30, 2021, and December 31, 2020, was $3,000. Inventories consisted of (in thousands):

	June 30, 2021		December 31, 2020
Raw material	$	91	$	111
Finished goods		171		166
Total	$	262	$	277

Other Assets, Policy [Policy Text Block]

Other Assets

Other Assets consisted of security deposits of $35,000 related to our business offices.

Equity Method Investments [Policy Text Block]

Equity Method of Accounting

On March 20, 2020, we invested $100,000 into a South Korean entity (Odin Co. Ltd., “Odin”) pursuant to a Joint Venture agreement we had entered into with BKT Co. Ltd. and its U.S. subsidiary, Tomorrow Water. We received a 40% non-dilutive equity interest, and BKT and Tomorrow Water each received 30% equity interests for an aggregate $150,000 investment.

We account for our investment in the joint venture under the equity method of accounting. We have determined that while we have significant influence over the joint venture through our technology license and our position on the Board of Directors, we do not control the joint venture or are otherwise involved in managing the entity and we own less than a majority of the equity. Therefore, we record the asset on our consolidated balance sheet and record an increase or decrease the recorded balance by our percentage ownership of the profits or losses in the joint venture. The joint venture incurred a loss during the three and six months ended June 30, 2021, and our 40% ownership share reduced our investment interest by $10,000 and $23,000, respectively.

Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]

Impairment

Long-lived and definite lived intangible assets are reviewed for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be recoverable. If the sum of the expected future undiscounted cash flows from the use of the asset and its eventual disposition is less than the carrying amount of the asset, then an impairment loss is recognized. The impairment loss is measured based on the fair value of the asset. Any resulting impairment is recorded as a reduction in the carrying value of the related asset in excess of fair value and a charge to operating results. For the three and six months ended June 30, 2021 and 2020, management determined that there was no impairment of its long-lived assets, including its In-process Research and Development (see Note 8).

Earnings Per Share, Policy [Policy Text Block]

Earnings (Loss) Per Share

We report basic and diluted earnings (loss) per share (“EPS”) for common and common share equivalents. Basic EPS is computed by dividing reported earnings by the weighted average shares outstanding. Diluted EPS is computed by adding to the weighted average shares the dilutive effect if stock options and warrants were exercised into common stock. For the three and six months ended June 30, 2021 and 2020, the denominator in the diluted EPS computation is the same as the denominator for basic EPS due to the anti-dilutive effect of the warrants and stock options on the Company’s net loss.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and revenues and expenses during the period reported. Actual results could differ from those estimates. Estimates are used when accounting for stock-based transactions, debt transactions, derivative liabilities, allowance for bad debt, asset depreciation and amortization, among others.

The methods, estimates and judgments we use in applying these most critical accounting policies have a significant impact on the results of our financial statements.

Share-based Payment Arrangement [Policy Text Block]

Share-Based Compensation Expense

We recognize compensation expense for stock option awards on a straight-line basis over the applicable service period of the award, which is the vesting period. Fair value is determined on the grant date. Share-based compensation expense is based on the grant date fair value estimated using the Black-Scholes Option Pricing Model.

For stock and stock options issued to consultants and other non-employees for services, the Company measures and records an expense as of the earlier of the date at which either: a commitment for performance by the non-employee has been reached or the non-employee’s performance is complete. The equity instruments are measured at the current fair value, and for stock options, the instruments are measured at fair value using the Black Scholes option model.

The following methodology and assumptions were used to calculate share-based compensation for the six months ended June 30, 2021 and 2020:

	2021						2020
	Non Plan			2018 Plan			Non Plan		2018 Plan
Risk free interest rate		1.73	%	0.93	–	1.73%	0.88	%	0.88	–	1.90%
Expected volatility		124	%	123	–	124%	131	%	131	–	133%
Expected dividend yield		—			—		—			—
Forfeiture rate		—			—		—			—
Life in years		10			10		10			10

Expected price volatility is the measure by which our stock price is expected to fluctuate during the expected term of an option. Expected volatility is derived from the historical daily change in the market price of our common stock, as we believe that historical volatility is the best indicator of future volatility.

The risk-free interest rate used in the Black-Scholes calculation is based on the prevailing U.S. Treasury yield as determined by the U.S. Federal Reserve. We have never paid any cash dividends on our common stock and do not anticipate paying cash dividends on our common stock in the foreseeable future.

Historically, we have not had significant forfeitures of unvested stock options granted to employees and Directors. A significant number of our stock option grants are fully vested at issuance or have short vesting provisions. Therefore, we have estimated the forfeiture rate of our outstanding stock options as zero.

Warrant Policy [Policy Text Block]

Warrants

Warrants issued with our convertible promissory notes, note payables, line of credit are accounted for under the fair value and relative fair value method.

The warrant is first analyzed per its terms as to whether it has derivative features or not. If the warrant is determined to be a derivative and not qualify for equity treatment, then it is measured at fair value using the Black Scholes option model, and recorded as a liability on the balance sheet. The warrant is re-measured at its then current fair value at each subsequent reporting date (it is “marked-to-market”).

If the warrant is determined to not have derivative features, it is recorded into equity at its fair value using the Black Scholes option model, however, limited to a relative fair value based upon the percentage of its fair value to the total fair value including the fair value of the convertible note.

Convertible debt instruments are recorded at fair value, limited to a relative fair value based upon the percentage of its fair value to the total fair value including the fair value of the warrant. Further, the convertible debt instrument is examined for any intrinsic beneficial conversion feature (“BCF”) of which the conversion price is less than the closing common stock price on date of issuance. If the relative fair value method is used to value the convertible debt instrument and there is an intrinsic BCF, a further analysis is undertaken of the BCF using an effective conversion price which assumes the conversion price is the relative fair value divided by the number of shares the convertible debt is converted into by its terms. The BCF value is accounted for as equity.

The warrant and BCF relative fair values are also recorded as a discount to the convertible promissory notes. At present, these equity features of the convertible promissory notes have recorded a discount to the convertible notes that is substantially equal to the proceeds received.

Non Cash Transactions [Policy Text Block]

Non-Cash Transactions

We have established a policy relative to the methodology to determine the value assigned to each intangible we acquire, and/or services or products received for non-cash consideration of our common stock. The value is based on the market price of our common stock issued as consideration, at the date of the agreement of each transaction or when the service is rendered, or product is received.

Revenue from Contract with Customer [Policy Text Block]

Revenue Recognition

We account for revenue in accordance with ASC 606, “Revenue from Contacts with Customers”. The guidance focuses on the core principle for revenue recognition, which is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. To achieve that core principle, the guidance provides that an entity should apply the following steps:

Step 1: Identify the contract(s) with a customer.

Step 2: Identify the performance obligations in the contract.

Step 3: Determine the transaction price.

Step 4: Allocate the transaction price to the performance obligations in the contract.

Step 5: Recognize revenue when (or as) the entity satisfies a performance obligation.

Products sold a through a contract with the customer and written purchase order, in which the details of the contract are defined including the transaction price and method of shipment. The only performance obligation is to create and ship the product and each product has separate pricing. Revenue is recognized at a point in time when the goods are shipped if the agreement is FOB manufacturer, and when goods are delivered if FOB destination. Revenue is recognized with a reduction for sales discounts, as appropriate and negotiated in the customer’s purchase order.

Service contracts are performed through a written contract, which specifies the performance obligations and the rate at which the services will be billed, typically by time and materials. Each service is separately negotiated and priced. Revenue is recognized as services are performed and completed, or, for services related to product installations, at the completion of the installation. A few contracts have called for milestone or fixed cost payments, where we invoice an agreed-to amount per month for the life of the contract. In these instances, completed work, billed hourly, is recognized as revenue. If the billing amount is greater or lesser than the completed work, a receivable or payable is created. These accounts are adjusted upon additional billings as the work is completed. To date, there have been no discounts or other financing terms for the contracts.

In the event that we generate revenues from royalties or license fees from our intellectual property, we anticipate a licensee would pay a license fee in one or more installments and ongoing royalties based on their sales of products incorporating or using our licensed intellectual property. Upon entering into a licensing agreement, we will determine the appropriate method of recognizing the royalty and license fees.

Clyra also has certain distribution agreements that call for consigned inventory. Although the product is shipped to a third party, it is not revenue until that consigned inventory is sold to end user customer.

Government Grants [Policy Text Block]

Government Grants

We have been awarded multiple research grants from the Canadian National Research Institute – Industrial Research Assistance Program (NRC-IRAP) and the National Science and Engineering Research Council of Canada (NSERC). The grants received are considered other income and are included in our consolidated statements of operations. We received our first grant in 2015 and have been awarded over 80 grants totaling over $3.7 million. Some of the funds from these grants are given directly to third parties (such as the University of Alberta or a third-party research scientist) to support research on our technology. The grants have terms generally ranging between six and eighteen months and support a majority, but not all, of the related research budget costs. This cooperative research allows us to utilize (i) a depth of resources and talent to accomplish highly skilled work, (ii) financial aid to support research and development costs, (iii) independent and credible validation of our technical claims.

The grants typically provide for (i) recurring monthly amounts, (ii) reimbursement of costs for research talent for which we invoice to request payment, and (iii) ancillary cost reimbursement for research talent travel related costs. All awarded grants have specific requirements on how the money is spent, typically to employ researchers. None of the funds may be used for general administrative expenses or overhead in the United States. These grants have substantially increased our level of research and development activities in Canada. We continue to apply for Canadian government and agency grants to fund research and development activities. Not all of our grant applications have been awarded, and no assurance can be made that any pending grant application, or any future grant applications, will be awarded.

Income Tax, Policy [Policy Text Block]

Income Taxes

The asset and liability approach is used to recognize deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the carrying amounts and the tax bases of asset and liabilities. Deferred tax assets and liabilities are determined based on the differences between financial reporting and tax bases of assets and liabilities and are measured using the enacted tax rates and laws that will be in effect when the differences are expected to reverse. The effect on deferred tax asset and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date.

We account for uncertainties in income tax law under a comprehensive model for the financial statement recognition, measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns as prescribed by generally accepted accounting principles (“GAAP”).  Under GAAP, the tax effects of a position are recognized only if it is “more-likely-than-not” to be sustained by the taxing authority as of the reporting date.  If the tax position is not considered “more-likely-than-not” to be sustained, then no benefits of the position are recognized.  Management believes there are no unrecognized tax benefits or uncertain tax positions as of June 30, 2021, and December 31, 2020.

The Company assessed its earnings history, trends and estimates of future earnings and determined that the deferred tax asset could not be realized as of June 30, 2021. Accordingly, a valuation allowance was recorded against the net deferred tax asset.

The Company recognizes interest and penalties on income taxes as a component of income tax expense, should such an expense be realized.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value of Financial Instruments

Management believes the carrying amounts of the Company’s financial instruments (excluding debt and equity instruments) as of June 30, 2021 and December 31, 2020, approximate their respective fair values because of the short-term nature of these instruments. Such instruments consist of cash, accounts receivable, prepaid assets, accounts payable, lines of credit, and other assets and liabilities.

Tax Credits [Policy Text Block]

Tax Credits

Our research and development activities in Canada may entitle our Canadian subsidiary to claim benefits under the “Scientific Research and Experimental Development Program”, a Canadian federal tax incentive program designed to encourage Canadian businesses of all sizes and in all sectors to conduct research and development in Canada. Benefits under the program include credits to taxable income. If our Canadian subsidiary does not have taxable income in a reporting period, we instead receive a tax refund from the Canadian Revenue Authority. Those refunds are classified in Other Income on our Consolidated Statement of Operations and Comprehensive Loss.

Lessee, Leases [Policy Text Block]

Leases

In accordance with ASC 842, the Company elects to use hindsight as a practical expedient with respect to determining the lease terms (as we considered our updated expectations of acceptance of the Westminster California facility lease renewal) and in assessing any impairment of right-of-use assets for existing leases. No impairment is expected at this time.  As of June 30, 2021, the right of use assets on our balance sheet related to our operating leases total $311,000.

New Accounting Pronouncements, Policy [Policy Text Block]

Recent Accounting Pronouncements

In May 2021, the FASB issued Accounting Standards Update No. 2021-04, regarding accounting for certain modifications of written call options.

In August 2020, the FASB issued Accounting Standards Update No. 2020-06, “Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging— Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity”. For convertible instruments, the FASB decided to reduce the number of accounting models for convertible debt instruments and convertible preferred stock. Limiting the accounting models results in fewer embedded conversion features being separately recognized from the host contract as compared with current GAAP. Convertible instruments that continue to be subject to separation models are (1) those with embedded conversion features that are not clearly and closely related to the host contract, that meet the definition of a derivative, and that do not qualify for a scope exception from derivative accounting and (2) convertible debt instruments issued with substantial premiums for which the premiums are recorded as paid-in capital. The FASB decided to amend the guidance for the derivatives scope exception for contracts in an entity’s own equity to reduce form-over-substance-based accounting conclusions. The FASB observed that the application of the derivatives scope exception guidance results in accounting for some contracts as derivatives while accounting for economically similar contracts as equity. The FASB also decided to improve and amend the related EPS guidance. The amendments in this Update are effective for public business entities that meet the definition of a Securities and Exchange Commission (SEC) filer, excluding entities eligible to be smaller reporting companies as defined by the SEC, for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. Management is currently evaluating the effect on the Company’s financials if and when future convertible securities are issued. This Update does not affect the Company’s current financial statements.

In January 2020, the FASB issued Accounting Standards Update No 2020-01, “Investments—Equity Securities (Topic 321), Investments—Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815): Clarifying the Interactions between Topic 321, Topic 323, and Topic 815”. This Update relates to the Company’s equity method of accounting and the potential interactions between the measurement alternative in Topic 321 and the equity method of accounting in Topic 323 and that diverse views have emerged about the application of the measurement alternative and the equity method of accounting since the adoption of Update 2016-01.  The measurement alternative is the ability to measure certain equity securities without a readily determinable fair value at cost, minus impairment, if any. Paragraph 321-10-35-2, as amended, states that if an entity identifies observable price changes in orderly transactions for the identical or a similar investment of the same issuer, it should measure the equity security at fair value as of the date that the observable transaction occurred (hereinafter referred to as the measurement alternative). The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. Management adopted the updates, and after evaluation, did not make any modifications to the financial statements.

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Note 2 - Summary of Significant Accounting Policies (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Cash and Cash Equivalents [Table Text Block]

	June 30, 2021		December 31, 2020
BioLargo, Inc. and subsidiaries	$	1,338	$	637
Clyra Medical Technologies, Inc.		19		79
Total	$	1,357	$	716

Schedules of Concentration of Risk, by Risk Factor [Table Text Block]

	June 30, 2021			June 30, 2020
Customer A		22	%		<10	%
Customer B		19	%		<10	%
Customer C		11	%		<10	%
Customer D		<10	%		13	%

	June 30, 2021			December 31, 2020
Customer C		31	%		<10	%
Customer D		17	%		<10	%
Customer E		11	%		<10	%
Customer F		<10	%		32	%
Customer G		<10	%		10	%

Schedule of Inventory, Current [Table Text Block]

	June 30, 2021		December 31, 2020
Raw material	$	91	$	111
Finished goods		171		166
Total	$	262	$	277

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

	2021						2020
	Non Plan			2018 Plan			Non Plan		2018 Plan
Risk free interest rate		1.73	%	0.93	–	1.73%	0.88	%	0.88	–	1.90%
Expected volatility		124	%	123	–	124%	131	%	131	–	133%
Expected dividend yield		—			—		—			—
Forfeiture rate		—			—		—			—
Life in years		10			10		10			10

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Note 4 - Debt Obligations (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Debt [Table Text Block]

	June 30, 2021 (Unaudited)			December 31, 2020
Current portion of debt:
Note payable, matures on demand 60 days’ notice (or March 8, 2023)	$	—		$	50
Line of credit, matures on 30-day demand		—			50
Total notes payable and line of credit	$	—		$	100
Convertible notes payable:
Convertible note payable, matures April 20, 2021	$	—		$	100
Convertible note payable, matures August 9, 2021		—			600
Convertible notes, mature August 12 and 16, 2021		—			406
Total convertible notes payable		—			1,106
Debt discount, net of amortization		—			(104	)
Total current liabilities		—			1,102
Long-term debt:
Convertible note payable, matures March 1, 2023	$	50		$	—
Debt discount, net of amortization		(29	)		—
SBA Paycheck Protection Program loans		314			357
SBA EIDL Loan		150			150
Total long-term liabilities		485			507
Total	$	485		$	1,609

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Note 5 - Share-based Compensation (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

							Weighted
							Average		Aggregate
	Options			Exercise			Price per		intrinsic
	Outstanding			Price per share			share		Value(1)
Balance, December 31, 2020		18,865,525		$0.16	–	0.40	$	0.19
Granted		2,483,691		0.13	–	0.23		0.19
Expired		—			—			—
Balance, June 30, 2021		21,349,216		$0.12	–	0.43	$	0.19
Non-vested		(4,218,833	)	0.12	–	0.40		0.23
Vested, June 30, 2021		17,130,383		$0.12	–	0.43	$	0.18	$	250,000
Balance, December 31, 2019		9,214,356		$0.16	–	0.43	$	0.25
Granted		8,610,689		0.17	–	0.22		0.19
Expired		(200,000	)	0.18	–	0.34		0.26
Balance, June 30, 2020		17,625,045		$0.16	–	0.43	$	0.20

							Weighted
							Average		Aggregate
	Options			Exercise			Price per		intrinsic
	Outstanding			price per share			share		Value(1)
Balance, December 31, 2020		5,689,363		$0.23	-	0.94	$	0.44
Expired		(1,453,855	)	0.39	-	0.51		0.40
Balance, June 30, 2021		4,235,508		$0.23	-	1.65	$	0.45	$	—
Balance, December 31, 2019		8,769,451		$0.23	–	0.94	$	0.42
Expired		(930,000	)	0.39	–	0.58		0.56
Balance, June 30, 2020		7,839,451		$0.23	–	1.65	$	0.41

							Weighted
	Non-plan						average		Aggregate
	Options			Exercise			price per		Intrinsic
	outstanding			price per share			share		value(1)
Balance, December 31, 2020		20,749,583		$0.17	–	1.00	$	0.41
Granted		43,956			0.23			0.23
Balance, June 30, 2021		20,793,539		$0.17	–	1.00	$	0.41
Non-vested		(1,996,576	)	0.17	–	0.45		0.45
Vested, June 30, 2021		18,796,963		$0.17	–	1.00	$	0.41	$	28,000
Balance, December 31, 2019		19,604,107		$0.23	–	1.00	$	0.41
Granted		292,437		0.17	–	0.21		0.18
Balance, June 30, 2020		19,896,544		$0.17	–	1.00	$	0.41

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Note 6 - Warrants (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

							Weighted
							average		Aggregate
	Warrants			Exercise			price per		Intrinsic
	outstanding			price per share			share		value(1)
Balance, December 31, 2020		32,980,989		$0.16	–	1.00	$	0.29
Issued		7,088,094		0.14	–	0.26		0.20
Expired		(1,046,528	)	0.19	–	0.35		0.24
Balance, June 30, 2021		39,022,555		$0.14	–	1.00	$	0.27	$	140,000
Balance, December 31, 2019		43,231,161		$0.16	–	1.00	$	0.42
Issued		3,934,592		0.13	-	0.24		0.13
Expired		(14,272,820	)	0.40	-	0.49		0.30
Balance, June 30, 2020		32,892,933		$0.16	–	1.00	$	0.35

Schedule Of Assumptions Used To Determine Fair Value Of Warrants [Table Text Block]

	June 30, 2021				June 30, 2020
Risk free interest rate			0.71%				0.23%
Expected volatility			100%				112
Expected dividend yield			—				—
Forfeiture rate			—				—
Expected life in years		.5	–	5		0.33	–	5

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Note 7 - Accounts Payable and Accrued Expenses (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	June 30, 2021		December 31, 2020
Accounts payable and accrued expense	$	145	$	315
Accrued interest		25		42
Accrued payroll		161		156
Total accounts payable and accrued expenses	$	331	$	513

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Note 9 - Noncontrolling Interest - Clyra Medical (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Other Ownership Interests [Table Text Block]

Shareholder	Shares		Percent
BioLargo, Inc.		49,207		45	%
Sanatio Capital		18,704		17	%
Scion Solutions(1)		21,700		20	%
Other		19,280		18	%
Total		108,891

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	June 30, 2021		December 31, 2020
Accounts payable and accrued expense	$	145	$	315
Accrued interest		25		42
Accrued payroll		161		156
Total accounts payable and accrued expenses	$	331	$	513

Clyra Medical [Member]

Notes Tables

Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

	June 30, 2021		December 31, 2020
Accounts payable and accrued expense	$	582	$	402
Accrued interest		127		32
Accrued payroll		51		102
Total Clyra Medical accounts payable and accrued expenses	$	760	$	536

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Note 11 - Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

	Three months ended June 30,						Six months ended June 30,
	2021			2020			2021			2020
Revenue
BioLargo corporate	$	—		$	—		$	7		$	—
ONM		318			299			638			596
BLEST		266			160			654			444
Water		—			—			9			—
Clyra Medical		—			21			114			21
Intersegment revenue		(120	)		(62	)		(387	)		(205	)
Total	$	464		$	418		$	1,035		$	856
Operating loss
BioLargo corporate	$	(937	)	$	(1,129	)	$	(1,860	)	$	(1,936	)
ONM		(107	)		(134	)		(283	)		(287	)
Clyra Medical		(300	)		(422	)		(739	)		(728	)
BLEST		(190	)		(124	)		(373	)		(331	)
Water		(168	)		(196	)		(305	)		(424	)
Total	$	(1,702	)	$	(2,005	)	$	(3,560	)	$	(3,706	)
Interest expense
BioLargo corporate	$	(51	)	$	(735	)	$	(106	)	$	(1,479	)
Clyra Medical		(38	)		(12	)		(76	)		(25	)
Total	$	(89	)	$	(747	)	$	(182	)	$	(1,504	)
Research and development expense
BioLargo corporate	$	(209	)	$	(119	)	$	(545	)	$	(321	)
Clyra Medical		(6	)		(47	)		(33	)		(61	)
BLEST		(123	)		(85	)		(228	)		(166	)
Water		(138	)		(137	)		(257	)		(317	)
Intersegment R&D		120			38			380			181
Total	$	(356	)	$	(350	)	$	(683	)	$	(684	)

As June 30, 2021	BioLargo		ONM		Clyra		BLEST		Water		Elimination			Total
Tangible assets	$	1,072	$	431	$	1,016	$	321	$	151	$	(47	)	$	2,944
Right of use		185		—		—		126		—		—			311
Investment in South Korean joint venture		40		—		—		—		—		—			40
Intangible assets		2,150		—		—		—		—		—			2,150

As of December 31, 2020	BioLargo		ONM		Clyra		BLEST		Water		Elimination			Total
Tangible assets	$	603	$	624	$	1,125	$	314	$	105	$	(42	)	$	2,388
Right of use		215		—		—		126		—		—			341
Investment in South Korean joint venture		63		—		—		—		—		—			63
Intangible assets		2,150		—		—		—		—		—			2,150

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Note 1 - Business and Organization (Details Textual) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Sep. 30, 2017
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	$ (1,790,000)	$ (1,878,000)	$ (2,701,000)	$ (2,616,000)	$ (3,668,000)	$ (5,316,000)
Net Cash Provided by (Used in) Operating Activities, Total					(2,054,000)	(2,047,000)
Working Capital (Deficit)	380,000				380,000
Assets, Current, Total	2,052,000				2,052,000		$ 1,505,000
Revenue from Contract with Customer, Including Assessed Tax	464,000		$ 418,000		1,035,000	856,000
Cash and Cash Equivalents, at Carrying Value, Ending Balance	1,357,000				1,357,000		716,000
Repayments of Debt					852,000
Long-term Debt, Total	1,721,000				1,721,000
Long-term Line of Credit, Total	$ 0				0		$ 50,000
Proceeds from Issuance of Common Stock					3,520,000	1,461,000
Stock Issued During Period, Value, Issued for Unpaid Salary and Business Expenses					$ 31,000
Number of Wholly-Owned Subsidiaries	4				4
BioLargo Engineering, Science & Technologies, LLC [Member]
Noncontrolling Interest, Ownership Percentage by Parent	94.00%				94.00%			100.00%
Clyra Medical Technologies [Member]
Noncontrolling Interest, Ownership Percentage by Parent	45.00%				45.00%
The 2020 Unit Offering [Member]
Proceeds from Issuance of Common Stock					$ 505,000	242,000
Lincoln Park Capital Fund, LLC [Member]
Proceeds from Issuance of Common Stock					$ 3,015,000	$ 1,461,000
Sale of Stock, Daily Basis, Requirement, Minimum Share Price (in dollars per share)					$ 0.10
Debt Instrument, Excluding Debt from Clyra [Member]
Long-term Debt, Total	$ 514,000				$ 514,000
Paycheck Protection Program CARES Act [Member]
Long-term Debt, Total	314,000				314,000
Economic Injury Disaster Loan [Member]
Long-term Debt, Total	$ 150,000				$ 150,000
Debt Instrument, Interest Rate, Stated Percentage	3.75%				3.75%
Debt Instrument, Term (Year)					30 years
Convertible Debt due in March 2023 [Member]
Convertible Debt, Total	$ 50,000				$ 50,000
Clyra Medical Technology Inc [Member]
Long-term Debt, Total	1,207,000				1,207,000
Long-term Line of Credit, Total	$ 200,000				$ 200,000

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Note 2 - Summary of Significant Accounting Policies (Details Textual)		3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 20, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Accounts Receivable, Allowance for Credit Loss, Current		$ 12,000		$ 12,000		$ 13,000
Inventory Valuation Reserves, Ending Balance		3,000		3,000		3,000
Security Deposit		35,000		35,000
Payments to Acquire Interest in Joint Venture				(0)	$ 100,000
Income (Loss) from Equity Method Investments, Total				(23,000)	(15,000)
Impairment of Long-Lived Assets Held-for-use		0	$ 0	0	$ 0
Unrecognized Tax Benefits, Ending Balance		0		0		0
Operating Lease, Right-of-Use Asset		311,000		$ 311,000		$ 341,000
Canadian Government Grants [Member]
Number of Grants Received				80
Grants Receivable		$ 3,700,000		$ 3,700,000
Canadian Government Grants [Member] | Minimum [Member]
Grant Term (Month)				6 months
Canadian Government Grants [Member] | Maximum [Member]
Grant Term (Month)				18 months
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Major Customers				3		2
Clyra Medical Technologies [Member]
Noncontrolling Interest, Ownership Percentage by Parent		45.00%		45.00%
Odin Co Ltd [Member]
Payments to Acquire Interest in Joint Venture	$ 100,000
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	40.00%	40.00%		40.00%
Income (Loss) from Equity Method Investments, Total		$ (10,000)		$ (23,000)
Odin Co Ltd [Member] | Tomorrow Water [Member]
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage	30.00%
Odin Co Ltd [Member] | BKT and Tomorrow Water [Member]
Payments to Acquire Interest in Joint Venture	$ 150,000

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Note 2 - Summary of Significant Accounting Policies - Summary of Cash Balances (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Cash and Cash Equivalents, at Carrying Value, Ending Balance	$ 1,357,000	$ 716,000
Parent Company [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance	1,338,000	637,000
Noncontrolling Interest [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance	$ 19,000	$ 79,000

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Note 2 - Summary of Significant Accounting Policies - Credit Concentration (Details) - Customer Concentration Risk [Member]	6 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Customer A [Member] | Revenue from Contract with Customer Benchmark [Member]
Credit concentration	22.00%
Customer C [Member] | Revenue from Contract with Customer Benchmark [Member]
Credit concentration	11.00%
Customer C [Member] | Accounts Receivable [Member]
Credit concentration	31.00%
Customer B [Member] | Revenue from Contract with Customer Benchmark [Member]
Credit concentration	19.00%
Customer D [Member] | Revenue from Contract with Customer Benchmark [Member]
Credit concentration		13.00%
Customer D [Member] | Accounts Receivable [Member]
Credit concentration	17.00%
Customer E [Member] | Accounts Receivable [Member]
Credit concentration	11.00%
Customer F [Member] | Accounts Receivable [Member]
Credit concentration			32.00%
Customer G [Member] | Accounts Receivable [Member]
Credit concentration			10.00%

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Note 2 - Summary of Significant Accounting Policies - Inventory (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Raw material	$ 91	$ 111
Finished goods	171	166
Total	$ 262	$ 277

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Note 2 - Summary of Significant Accounting Policies - Stock Options, Valuation Assumptions (Details)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Non Plan [Member]
Risk free interest rate	1.73%	0.88%
Expected volatility	124.00%	131.00%
Expected dividend yield	0.00%	0.00%
Life in years (Year)	10 years	10 years
2018 Equity Incentive Plan [Member]
Expected dividend yield	0.00%	0.00%
Life in years (Year)	10 years	10 years
2018 Equity Incentive Plan [Member] | Minimum [Member]
Risk free interest rate	0.93%	0.88%
Expected volatility	123.00%	131.00%
2018 Equity Incentive Plan [Member] | Maximum [Member]
Risk free interest rate	1.73%	1.90%
Expected volatility	124.00%	133.00%

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Note 3 - Sale of Stock for Cash (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 30, 2020
Proceeds from Issuance of Common Stock	$ 3,520,000	$ 1,461,000
Warrants Issued in Connection with Investment from Three Investors [Member]
Warrants and Rights Outstanding, Term (Month)	6 months
Warrants Issued in Connection with Investment from Three Investors [Member] | Minimum [Member]
Warrants and Rights Outstanding, Term (Month)	6 months
Warrants Issued with 2020 Unit Offering [Member] | Maximum [Member]
Warrants and Rights Outstanding, Term (Month)	5 years
The 2020 Unit Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	3,431,547	1,571,667
Proceeds from Issuance of Common Stock	$ 505,000	$ 242,000
Lincoln Park Capital Fund, LLC [Member]
Stock Purchase Agreement, Maximum Amount of Common Stock			$ 10,250,000
Stock Issued During Period, Shares, New Issues (in shares)	18,526,309	3,198,358
Proceeds from Issuance of Common Stock	$ 3,015,000	$ 1,461,000

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Note 4 - Debt Obligations (Details Textual) - USD ($)					6 Months Ended
	May 18, 2021	May 17, 2021	Apr. 20, 2021	Mar. 01, 2021	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Interest Expense, Debt, Total					$ 182,000	$ 1,504,000
Long-term Line of Credit, Total					0		$ 50,000
Debt Conversion, Original Debt, Amount					328,000	$ 1,122,000
Convertible Note, Maturing August 12, 2021 [Member]
Repayments of Convertible Debt		$ 178,000
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares)		1,272,321
Convertible Note, Maturing August 9, 2021 [Member]
Repayments of Convertible Debt				$ 600,000
Line of Credit, Maturing September 1, 2019 [Member]
Repayments of Long-term Lines of Credit				50,000
Long-term Line of Credit, Total					0
Promissory Note, Maturing on August 18, 2021 [Member] | Conversion of Debt into Shares of Common Stock [Member]
Debt Conversion, Original Debt, Amount	$ 50,000
Debt Conversion, Converted Instrument, Shares Issued (in shares)	294,118
Promissory Note, Maturing on April 20, 2021 [Member] | Conversion of Debt into Shares of Common Stock [Member]
Debt Conversion, Original Debt, Amount			$ 100,000
Debt Conversion, Converted Instrument, Shares Issued (in shares)			400,000
Note Payable, Maturing March 8, 2023 [Member]
Debt Instrument, Face Amount				$ 50,000	$ 50,000
Debt Instrument, Convertible, Conversion Price (in dollars per share)				$ 0.16

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Note 4 - Debt Obligations - Schedule of Debt (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Long-term Line of Credit, Total	$ 0	$ 50
Total notes payable and line of credit	0	100
Convertible notes	0	1,106
Debt discount, net of amortization	0	(104)
Total current liabilities	0	1,102
Long-term debt	485	507
Debt discount, net of amortization	(29)	0
Total	485	1,609
Note Payable, Maturing March 8, 2023 [Member]
Notes Payable, Current, Total	0	50
Convertible Note, Maturing April 20 2021 [Member]
Convertible notes	0	100
Convertible Note, Maturing August 9, 2021 [Member]
Convertible notes	0	600
Long-term debt	50	0
Convertible Notes, Maturing August 12 and 16, 2020 [Member]
Convertible notes	0	406
Paycheck Protection Program CARES Act [Member]
Long-term debt	314	357
Economic Injury Disaster Loan [Member]
Long-term debt	$ 150	$ 150

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Note 5 - Share-based Compensation (Details Textual) - USD ($)								1 Months Ended	3 Months Ended					6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Mar. 17, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 22, 2018	Sep. 07, 2017	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Stock Issued During Period, Value, Issued for Services										$ 60,000	$ 111,000	$ 272,000	$ 178,000
Stock Issued During Period, Value, New Issues										$ 1,414,000	$ 2,106,000	$ 560,000	$ 901,000
Share Price (in dollars per share)	$ 0.17								$ 0.17	$ 0.17				$ 0.17
2018 Equity Incentive 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, Number of Shares Authorized (in shares)						40,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized Per Year (in shares)						2,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)														2,483,691	8,610,689
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)														$ 0.19	$ 0.19
The 2007 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)							10 years
Non Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)														43,956	292,437
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)														$ 0.23	$ 0.18
Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Expense														$ 754,000	$ 848,000
Common Stock Issued for Accrued Interest Due on Promissory Note [Member]
Shares Issued, Price Per Share (in dollars per share)	$ 0.17			$ 0.16	$ 0.17			$ 0.16	0.17	$ 0.17		$ 0.16	$ 0.17	$ 0.17	$ 0.16
Stock Issued During Period, Shares, New Issues (in shares)										81,777			19,278		594,428
Stock Issued During Period, Value, New Issues										$ 16,000			$ 4,000		$ 30,000
Officer [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)		137,364			648,755			367,403
Shares Issued, Price Per Share (in dollars per share)		$ 0.23		$ 0.16	$ 0.17			$ 0.16			$ 0.23	0.16	$ 0.17		$ 0.16
Stock Issued During Period, Value, Issued for Services		$ 31,000			$ 110,000			$ 59,000
Consultants [Member]
Stock Issued During Period, Shares, Issued for Services (in shares)	357,132	610,123		1,406,630	390,735
Shares Issued, Price Per Share (in dollars per share)	$ 0.17	$ 0.23		$ 0.16	$ 0.17			$ 0.16	$ 0.17	$ 0.17	$ 0.23	0.16	$ 0.17	$ 0.17	$ 0.16
Stock Issued During Period, Value, Issued for Services	$ 60,000	$ 81,000		$ 213,000	$ 67,000
Consultants [Member] | 2018 Equity Incentive Plan [Member]
Stock Issued During Period, Value, Issued for Services															$ 65,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)															449,286
Employees, Consultations, Officers, and Directors [Member] | 2018 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)														2,483,691	8,610,689
Chief Financial Officer [Member] | 2018 Equity Incentive 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, Grants in Period, Gross (in shares)			300,000											300,000	457,500
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)			$ 0.23											$ 0.17
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Number of Shares (in shares)									125,000						177,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Fair Value			$ 49,000
Engagement Agreement, Term (Month)			12 months
Chief Financial Officer [Member] | 2018 Equity Incentive Plan [Member] | Vesting Monthly [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)			175,000												25,000
Chief Financial Officer [Member] | 2018 Equity Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)															$ 0.14
Chief Financial Officer [Member] | 2018 Equity Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)															$ 0.21
Board Of Directors [Member] | 2018 Equity Incentive Plan [Member]
Share-based Payment Arrangement, Expense														$ 130,000	$ 130,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)														693,762	821,434
Board Of Directors [Member] | 2018 Equity Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)														$ 0.17	$ 0.17
Board Of Directors [Member] | 2018 Equity Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)														$ 0.23	$ 0.16
Employees [Member] | 2018 Equity Incentive Plan [Member]
Share-based Payment Arrangement, Expense														$ 234,000	$ 151,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)														1,298,411	939,332
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)														4 years	4 years
Employees [Member] | 2018 Equity Incentive Plan [Member] | Converted Accrued and Unpaid Obligations for Previous Issued Expired Options [Member]
Share-based Payment Arrangement, Expense															$ 145,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)															1,062,192
Employees [Member] | 2018 Equity Incentive Plan [Member] | Minimum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)														$ 0.17	$ 0.16
Employees [Member] | 2018 Equity Incentive Plan [Member] | Minimum [Member] | Converted Accrued and Unpaid Obligations for Previous Issued Expired Options [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)															0.14
Employees [Member] | 2018 Equity Incentive Plan [Member] | Maximum [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)														$ 0.23	0.17
Employees [Member] | 2018 Equity Incentive Plan [Member] | Maximum [Member] | Converted Accrued and Unpaid Obligations for Previous Issued Expired Options [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)															$ 0.17
Employees and Consultants [Member] | 2018 Equity Incentive Plan [Member]
Stock Issued During Period, Value, Issued for Services														$ 35,000
Share-based Payment Arrangement, Expense															$ 656,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)														191,518	4,880,945
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)															$ 0.14
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)															1 year
Vendors [Member] | Non Plan [Member]
Shares Issued, Price Per Share (in dollars per share)	$ 0.23								$ 0.23	$ 0.23				$ 0.23
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)														43,956	292,437
Vendors [Member] | Non Plan [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Expense														$ 10,000	$ 50,000
Vendors [Member] | Non Plan [Member] | Minimum [Member]
Shares Issued, Price Per Share (in dollars per share)				$ 0.17				0.17				0.17			$ 0.17
Vendors [Member] | Non Plan [Member] | Maximum [Member]
Shares Issued, Price Per Share (in dollars per share)				$ 0.21				$ 0.21				$ 0.21			$ 0.21

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Note 5 - Share-based Compensation - Stock Options (Details) - USD ($)		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
2018 Equity Incentive Plan [Member]
Options outstanding, balance (in shares)		18,865,525	9,214,356
Weighted average exercise price per share, balance (in dollars per share)		$ 0.19	$ 0.25
Options granted (in shares)		2,483,691	8,610,689
Weighted average exercise price per share, granted (in dollars per share)		$ 0.19	$ 0.19
Options expired (in shares)		0	(200,000)
Weighted average exercise price per share, Expired (in dollars per share)		$ 0	$ 0.26
Options Non-vested (in shares)		(4,218,833)
Weighted average exercise price per share, Non-vested (in dollars per share)		$ 0.23
Options Vested (in shares)		17,130,383
Vested, June 30, 2021 (in dollars per share)		$ 0.18
Vested, aggregate intrinsic value	[1]	$ 250,000
Options outstanding, balance (in shares)		21,349,216	17,625,045
Weighted average exercise price per share, balance (in dollars per share)		$ 0.19	$ 0.20
2018 Equity Incentive Plan [Member] | Minimum [Member]
Exercise price per share, balance (in dollars per share)		0.16	0.16
Exercise price per share, granted (in dollars per share)		0.13	0.17
Exercise price per share, Non-vested (in dollars per share)		0.12
Exercise price per share, Vested (in dollars per share)		0.12
Exercise price per share, Expired (in dollars per share)			0.18
Exercise price per share, balance (in dollars per share)		0.12	0.16
2018 Equity Incentive Plan [Member] | Maximum [Member]
Exercise price per share, balance (in dollars per share)		0.40	0.43
Exercise price per share, granted (in dollars per share)		0.23	0.22
Exercise price per share, Non-vested (in dollars per share)		0.40
Exercise price per share, Vested (in dollars per share)		0.43
Exercise price per share, Expired (in dollars per share)			0.34
Exercise price per share, balance (in dollars per share)		$ 0.43	$ 0.43
The 2007 Equity Incentive Plan [Member]
Options outstanding, balance (in shares)		5,689,363	8,769,451
Weighted average exercise price per share, balance (in dollars per share)		$ 0.44	$ 0.42
Options expired (in shares)		(1,453,855)	(930,000)
Weighted average exercise price per share, Expired (in dollars per share)		$ 0.40	$ 0.56
Options outstanding, balance (in shares)		4,235,508	7,839,451
Weighted average exercise price per share, balance (in dollars per share)		$ 0.45	$ 0.41
Outstanding, aggregate intrinsic value	[1]
The 2007 Equity Incentive Plan [Member] | Minimum [Member]
Exercise price per share, balance (in dollars per share)		0.23	$ 0.23
Exercise price per share, Expired (in dollars per share)		0.39	0.39
Exercise price per share, balance (in dollars per share)		0.23	0.23
The 2007 Equity Incentive Plan [Member] | Maximum [Member]
Exercise price per share, balance (in dollars per share)		0.94	0.94
Exercise price per share, Expired (in dollars per share)		0.51	0.58
Exercise price per share, balance (in dollars per share)		$ 1.65	$ 1.65
Non Plan [Member]
Options outstanding, balance (in shares)		20,749,583	19,604,107
Weighted average exercise price per share, balance (in dollars per share)		$ 0.41	$ 0.41
Options granted (in shares)		43,956	292,437
Exercise price per share, granted (in dollars per share)		$ 0.23
Weighted average exercise price per share, granted (in dollars per share)		$ 0.23	$ 0.18
Options Non-vested (in shares)		(1,996,576)
Weighted average exercise price per share, Non-vested (in dollars per share)		$ 0.45
Options Vested (in shares)		18,796,963
Vested, June 30, 2021 (in dollars per share)		$ 0.41
Vested, aggregate intrinsic value	[1]	$ 28,000
Options outstanding, balance (in shares)		20,793,539	19,896,544
Weighted average exercise price per share, balance (in dollars per share)		$ 0.41	$ 0.41
Non Plan [Member] | Minimum [Member]
Exercise price per share, balance (in dollars per share)		0.17	0.23
Exercise price per share, granted (in dollars per share)			0.17
Exercise price per share, Non-vested (in dollars per share)		0.17
Exercise price per share, Vested (in dollars per share)		0.17
Exercise price per share, balance (in dollars per share)		0.17	0.17
Non Plan [Member] | Maximum [Member]
Exercise price per share, balance (in dollars per share)		1.00	1.00
Exercise price per share, granted (in dollars per share)			0.21
Exercise price per share, Non-vested (in dollars per share)		0.45
Exercise price per share, Vested (in dollars per share)		1.00
Exercise price per share, balance (in dollars per share)		$ 1.00	$ 1.00

[1] Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021

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Note 6 - Warrants (Details Textual) - USD ($)		6 Months Ended
	Mar. 01, 2021	Jun. 30, 2021
Share Price (in dollars per share)		$ 0.17
Note Payable, Maturing March 8, 2023 [Member]
Debt Instrument, Face Amount	$ 50,000	$ 50,000
Debt Instrument, Term (Year)	2 years
Warrants Issued in Connection with Investment from Three Investors [Member]
Warrants and Rights Outstanding, Term (Month)		6 months
Class of Warrant or Right, Issued During Period, Number of Securities Called by Warrants or Rights (in shares)		3,431,547
Warrants Issued in Connection with Investment from Three Investors [Member] | Minimum [Member]
Warrants and Rights Outstanding, Term (Month)		6 months
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share)		$ 0.14
Warrants Issued in Connection with Investment from Three Investors [Member] | Maximum [Member]
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share)		$ 0.21
Five Year Warrant [Member]
Warrants and Rights Outstanding, Term (Month)		5 years
Class of Warrant or Right, Issued During Period, Number of Securities Called by Warrants or Rights (in shares)		3,431,547
Five Year Warrant [Member] | Minimum [Member]
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share)		$ 0.18
Five Year Warrant [Member] | Maximum [Member]
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share)		$ 0.24
Warrants Issued in Connection with Conversion of Interest on Note Payable Maturing March 8, 2023 [Member]
Warrants and Rights Outstanding, Term (Month)	5 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	225,000
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.16
Warrants and Rights Outstanding	$ 35,000

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Note 6 - Warrants - Warrants Outstanding (Details) - USD ($)		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020
Balance, outstanding (in shares)		32,980,989	43,231,161
Issued (in shares)		7,088,094	3,934,592
Expired (in shares)		(1,046,528)	(14,272,820)
Balance, outstanding (in shares)		39,022,555	32,892,933
Balance, aggregate intrinsic value	[1]	$ 140,000
Minimum [Member]
Balance, outstanding, price range (in dollars per share)		$ 0.16	$ 0.16
Granted, price range (in dollars per share)		0.14	0.13
Expired (in dollars per share)		0.19	0.40
Balance, outstanding, price range (in dollars per share)		0.14	0.16
Maximum [Member]
Balance, outstanding, price range (in dollars per share)		1.00	1.00
Granted, price range (in dollars per share)		0.26	0.24
Expired (in dollars per share)		0.35	0.49
Balance, outstanding, price range (in dollars per share)		1.00	1.00
Weighted Average [Member]
Balance, outstanding, price range (in dollars per share)		0.29	0.42
Granted, price range (in dollars per share)		0.20	0.13
Expired (in dollars per share)		0.24	0.30
Balance, outstanding, price range (in dollars per share)		$ 0.27	$ 0.35

[1] Aggregate intrinsic value based on closing common stock price of $0.17 at June 30, 2021

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Note 6 - Warrants - Assumptions Used to Determine Fair Value of Warrants (Details)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Risk free interest rate	0.71%	0.23%
Expected volatility	100.00%	112.00%
Minimum [Member]
Expected life (Year)	6 months	3 months 29 days
Maximum [Member]
Expected life (Year)	5 years	5 years

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Note 7 - Accounts Payable and Accrued Expenses - Summary of Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Corporate, Non-Segment [Member]
Accounts payable and accrued expense	$ 145
Accrued interest	25
Accrued payroll	161
Total accounts payable and accrued expenses	$ 331
Operating Segments [Member] | Odor-No-More [Member]
Accounts payable and accrued expense		$ 315
Accrued interest		42
Accrued payroll		156
Total accounts payable and accrued expenses		$ 513

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Note 9 - Noncontrolling Interest - Clyra Medical (Details Textual) - USD ($)						3 Months Ended				6 Months Ended			12 Months Ended
	Mar. 01, 2022	Jun. 30, 2020	Dec. 17, 2018	Sep. 26, 2018	Dec. 30, 2015	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Feb. 28, 2022	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Dec. 31, 2020
Long-term Line of Credit, Total						$ 0					$ 0		$ 0	$ 50,000
Stock Issued During Period, Value, Issued for Services						60,000	$ 111,000	$ 272,000	$ 178,000
Stock Issued During Period, Value, New Issues						$ 1,414,000	$ 2,106,000	$ 560,000	$ 901,000
Share Price (in dollars per share)						$ 0.17					$ 0.17		$ 0.17
Clyra Medical [Member]
Stock Issued During Period, Value, New Issues											$ 50,000	$ 849,000
Shares Issued, Price Per Share (in dollars per share)		$ 310				$ 310		$ 310			$ 310	$ 310	$ 310
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)		1,945				1,248		1,945			1,248	1,945	1,248	11,411
Share Price (in dollars per share)						$ 310					$ 310		$ 310
Clyra Medical [Member] | Vendors and Employees [Member]
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)											$ 1.00
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)											10 years
Clyra Medical [Member] | Vendors and Employees [Member] | Share-based Payment Arrangement, Option [Member]
Stock Issued During Period, Value, Issued for Services											$ 263,000	$ 441,000
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Discount Rate											30.00%
Clyra Medical [Member] | Beach House Consulting, LLC [Member]
Consulting Services, Monthly Payment					$ 23,000
Consulting Services, Period of Services (Year)					4 years
Stock Issued During Period, Shares, Issued for Services (in shares)												3,639
Consulting Services, Three Consecutive Month Average Revenue Threshold for Consulting Fees to Accrue											$ 250,000
Stock Issued During Period, Value, Issued for Services											788,000
Clyra Medical [Member] | Revolving Credit Facility [Member] | Vernal Bay Capital Group, LLC [Member] | Inventory Line of Credit [Member]
Debt Instrument, Interest Rate, Stated Percentage		15.00%						15.00%				15.00%
Debt Instrument, Term (Year)		1 year
Line of Credit Facility, Maximum Borrowing Capacity		$ 1,000,000						$ 1,000,000				$ 1,000,000
Proceeds from Lines of Credit, Total													$ 260,000
Line of Credit Facility, Covenant, Additional Draws, Maximum Percentage of Total Principal Outstanding Allowed		50.00%						50.00%				50.00%
Line of Credit Facility, Covenant, Additional Draws, Minimum Amount Allowed		$ 200,000						$ 200,000				$ 200,000
Line of Credit Facility, Monthly Percentage of Gross Product Sales Required to be Used as Payment of Debt on First 180 Days		30.00%						30.00%				30.00%
Line of Credit Facility, Monthly Percentage of Gross Product Sales Required to be Used as Payment of Debt after the First 180 Days		60.00%						60.00%				60.00%
Stock Issued During Period, Shares, Commitment Fee (in shares)		323
Stock Issued During Period, Value, Commitment Fee		$ 70,000
Repayments of Lines of Credit											24,000
Long-term Line of Credit, Total						$ 200,000					$ 200,000		$ 200,000
Clyra Medical [Member] | Revolving Credit Facility [Member] | Vernal Bay Capital Group, LLC [Member] | Inventory Line of Credit [Member] | Forecast [Member]
Debt Instrument, Periodic Payment, Percentage of Sales	60.00%									40.00%
Clyra Medical [Member] | Revolving Credit Facility [Member] | Vernal Bay Capital Group, LLC [Member] | Inventory Line of Credit [Member] | Minimum [Member] | Forecast [Member]
Debt Instrument, Periodic Payment, Principal	$ 7,500									$ 7,500
Clyra Medical [Member] | Scion Acquisition [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)				21,000
Business Combination, Consideration Transferred, Liabilities Incurred				$ 1,250,000
Business Acquisition, Base Capital Requirement for Escrow Release			$ 1,000,000	$ 1,000,000
Business Acquisition, Gross Revenue, Tranche One			100,000
Business Acquisition, Gross Revenue, Tranche Two			100,000
Business Acquisition, Gross Revenue, Tranche Three			500,000
Business Acquisition, Gross Revenue, Tranche Five			$ 2,000,000
Shares Remaining in Escrow (in shares)						9,300					9,300		9,300
Clyra Medical [Member] | Scion Acquisition [Member] | Clyra Acquisition, Common Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)				10,000
Clyra Medical [Member] | Scion Acquisition [Member] | Clyra Acquisition, Common Stock Redeemable for BioLargo Common Shares [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)				7,142,858
Clyra Medical [Member] | Scion Solutions [Member]
Debt Instrument, Interest Rate, Stated Percentage				5.00%
Debt Instrument, Percent of Investment Proceeds				25.00%
Debt Instrument, Percent of Gross Revenue				5.00%
Notes Payable, Current, Total						$ 1,007,000					$ 1,007,000		$ 1,007,000	$ 1,007,000
Clyra Medical [Member] | Clyra Acquisition, Common Stock [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)											9,300
Clyra Medical Technologies [Member]
Noncontrolling Interest, Ownership Percentage by Parent						45.00%					45.00%		45.00%

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Note 9 - Noncontrolling Interest - Clyra Medical Common and Preferred Shares Outstanding (Details) - Clyra Medical Technology Inc [Member]	Jun. 30, 2021 shares
Shares, Outstanding (in shares)	108,891
Biolargo [Member]
Shares, Outstanding (in shares)	49,207
Percent	45.00%
Sanatio [Member]
Shares, Outstanding (in shares)	18,704
Percent	17.00%
Scion Solutions [Member]
Shares, Outstanding (in shares)	21,700	[1]
Percent	20.00%	[1]
Other [Member]
Shares, Outstanding (in shares)	19,280
Percent	18.00%

[1] The above amounts do not include an additional 9,300 shares held in escrow subject to performance metrics that have not been met.

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Note 9 - Noncontrolling Interest - Summary of Accounts Payable and Accrued Expenses (Details) - Clyra Medical [Member] - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accounts payable and accrued expense	$ 582	$ 402
Accrued interest	127	32
Accrued payroll	51	102
Total accounts payable and accrued expenses	$ 760	$ 536

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Note 10 - BioLargo Engineering, Science and Technologies, LLC (Details Textual) - USD ($)	1 Months Ended			6 Months Ended		12 Months Ended
	Jan. 31, 2021	Nov. 30, 2019	Sep. 30, 2017	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Share-based Payment Arrangement, Noncash Expense, Total				$ 1,017,000	$ 1,074,000
Percentage of Profits Interests Vested		2.50%
Percentage of Option to Purchase Shares of Common Stock		10.00%
Seven Employees Working at BioLargo Engineering, Science & Technologies, LLC [Member]
Deferred Compensation Arrangement with Individual, Requisite Service Period (Year)			5 years
Potential Ownership Percentage of Subsidiary Held by Subsidiary Employees Based on Performance			30.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)	262,500	175,000
Incentive Issuance Stipulations for Subsidiary Employees, Accounts Receivable Collected by Year One of Operation			90.00%
Incentive Issuance Stipulations for Subsidiary Employees, Profit Earned in Year One of Operation			10.00%
Percentage of Profits Interests Vested	3.75%
Percentage of Option to Purchase Shares of Common Stock	15.00%
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value		$ 44,000		$ 0		$ 65,000
Seven Employees Working at BioLargo Engineering, Science & Technologies, LLC [Member] | Non-Qualified Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)			1,750,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)			5 years
Share-based Payment Arrangement, Noncash Expense, Total		$ 0
BioLargo Engineering, Science & Technologies, LLC [Member]
Noncontrolling Interest, Ownership Percentage by Parent			100.00%	94.00%

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Note 11 - Business Segment Information (Details Textual)	6 Months Ended
	Jun. 30, 2021
Number of Operating Segments	4

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Note 11 - Business Segment Information - Segment Information (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Revenue	$ 464,000	$ 418,000	$ 1,035,000	$ 856,000
Operating loss	(1,702,000)	(2,005,000)	(3,560,000)	(3,706,000)
Interest expense	(89,000)	(747,000)	(182,000)	(1,504,000)
Research and development	(356,000)	(350,000)	(683,000)	(684,000)
Tangible assets	2,944,000		2,944,000		$ 2,388,000
Operating Lease, Right-of-Use Asset	311,000		311,000		341,000
Investment in South Korean joint venture	40,000		40,000		63,000
Intangible assets	2,150,000		2,150,000		2,150,000
Investment in South Korean Joint Venture [Member]
Investment in South Korean joint venture	40,000		40,000		63,000
Corporate, Non-Segment [Member]
Revenue	0	0	7,000	0
Operating loss	(937,000)	(1,129,000)	(1,860,000)	(1,936,000)
Interest expense	(51,000)	(735,000)	(106,000)	(1,479,000)
Research and development	(209,000)	(119,000)	(545,000)	(321,000)
Tangible assets	1,072,000		1,072,000		603,000
Operating Lease, Right-of-Use Asset	185,000		185,000		215,000
Intangible assets	2,150,000		2,150,000		2,150,000
Corporate, Non-Segment [Member] | Investment in South Korean Joint Venture [Member]
Investment in South Korean joint venture	40,000		40,000		63,000
Operating Segments [Member] | Odor-No-More [Member]
Revenue	318,000	299,000	638,000	596,000
Operating loss	(107,000)	(134,000)	(283,000)	(287,000)
Tangible assets	431,000		431,000		624,000
Operating Lease, Right-of-Use Asset	0		0		0
Intangible assets	0		0		0
Operating Segments [Member] | Odor-No-More [Member] | Investment in South Korean Joint Venture [Member]
Investment in South Korean joint venture	0		0		0
Operating Segments [Member] | Clyra Medical [Member]
Tangible assets	1,016,000		1,016,000		1,125,000
Operating Lease, Right-of-Use Asset	0		0		0
Intangible assets	0		0		0
Operating Segments [Member] | Clyra Medical [Member] | Investment in South Korean Joint Venture [Member]
Investment in South Korean joint venture	0		0		0
Operating Segments [Member] | BLEST [Member]
Tangible assets	321,000		321,000		314,000
Operating Lease, Right-of-Use Asset	126,000		126,000		126,000
Intangible assets	0		0		0
Operating Segments [Member] | BLEST [Member] | Investment in South Korean Joint Venture [Member]
Investment in South Korean joint venture	0		0		0
Operating Segments [Member] | BioLargo Water [Member]
Revenue	0	0	9,000	0
Operating loss	(168,000)	(196,000)	(305,000)	(424,000)
Research and development	(138,000)	(137,000)	(257,000)	(317,000)
Tangible assets	151,000		151,000		105,000
Operating Lease, Right-of-Use Asset	0		0		0
Intangible assets	0		0		0
Operating Segments [Member] | BioLargo Water [Member] | Investment in South Korean Joint Venture [Member]
Investment in South Korean joint venture	0		0		0
Operating Segments [Member] | BioLargo Engineering, Science & Technologies, LLC [Member]
Revenue	266,000	160,000	654,000	444,000
Operating loss	(190,000)	(124,000)	(373,000)	(331,000)
Research and development	(123,000)	(85,000)	(228,000)	(166,000)
Operating Segments [Member] | Clyra Segment [Member]
Revenue	0	21,000	114,000	21,000
Operating loss	(300,000)	(422,000)	(739,000)	(728,000)
Interest expense	(38,000)	(12,000)	(76,000)	(25,000)
Research and development	(6,000)	(47,000)	(33,000)	(61,000)
Consolidation, Eliminations [Member]
Revenue	(120,000)	(62,000)	(387,000)	(205,000)
Research and development	120,000	$ 38,000	380,000	$ 181,000
Tangible assets	(47,000)		(47,000)		(42,000)
Operating Lease, Right-of-Use Asset	0		0		0
Intangible assets	0		0		0
Consolidation, Eliminations [Member] | Investment in South Korean Joint Venture [Member]
Investment in South Korean joint venture	$ 0		$ 0		$ 0

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Note 12 - Commitments and Contingencies (Details Textual) - USD ($)	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Operating Lease, Expense	$ 113,000	$ 114,000
Operating Lease, Weighted Average Remaining Lease Term (Year)	3 years
Lessee, Operating Lease, Liability, to be Paid, Total	$ 434,000
Lessee, Operating Lease, Discount Rate	18.00%
Corporate Office Lease [Member]
Lessee Operating, Lease Annual Escalation Rate	3.00%
Lessee, Operating Lease, Renewal Term (Year)	4 years
Oak Ridge, Tennessee Facility Lease [Member]
Lessee, Operating Lease, Renewal Term (Year)	5 years
Lessee, Operating Lease, Option to Extend Term (Year)	3 years

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Note 13 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended		6 Months Ended
	Aug. 12, 2021	Aug. 09, 2021	Jun. 30, 2021	Jun. 30, 2020
Proceeds from Issuance of Common Stock			$ 3,520,000	$ 1,461,000
Lincoln Park Capital Fund, LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)			18,526,309	3,198,358
Proceeds from Issuance of Common Stock			$ 3,015,000	$ 1,461,000
Subsequent Event [Member] | Six-month Warrants in Connection With the 2020 Unit Offering [Member]
Warrants and Rights Outstanding, Term (Month)	6 months
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	388,889
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.216
Subsequent Event [Member] | Five-year Warrants in Connection With the 2020 Unit Offering [Member]
Warrants and Rights Outstanding, Term (Month)	5 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	388,889
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.27
Subsequent Event [Member] | Lincoln Park Capital Fund, LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)		884,391
Proceeds from Issuance of Common Stock		$ 164,000
Subsequent Event [Member] | The 2020 Unit Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	388,889
Proceeds from Issuance of Common Stock	$ 70,000