BLGO Biolargo

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 advanced wound care. We develop and commercialize disruptive technologies by providing the capital, support, and expertise to expedite them from "cradle" to "maturity" ( Our engineering division features experienced professional engineers dedicated to integrity, reliability, and environmental stewardship ( Our industrial odor control division, Odor-No-More ( features CupriDyne Clean Industrial Odor Eliminator (, which eliminates the odor-causing compounds and VOCs rather than masking them, and is now winning over leading companies in the solid waste handling and wastewater industries and other industries that contend with malodors and VOCs. Our subsidiary BioLargo Water ( develops the Advanced Oxidation System "AOS," a disruptive industrial water treatment technology designed to eliminate waterborne pathogens and recalcitrant contaminants with better energy-efficiency and lower operational costs than incumbent technologies. Our subsidiary Clyra Medical ( features effective and gentle solutions for chronic infected wounds to promote infection control and regenerative tissue therapy.

Company profile

Dennis P. Calvert
Fiscal year end
Former names
IRS number

BLGO stock data


Investment data

Data from SEC filings
Securities sold
Number of investors


17 May 21
27 Jul 21
31 Dec 21
Quarter (USD)
Mar 21 Dec 20 Sep 20 Jun 20
Cost of revenue
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Annual (USD)
Dec 20 Dec 19 Dec 18 Dec 17
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Financial data from Biolargo earnings reports.

Cash burn rate (estimated) Burn method: Change in cash Burn method: Operating income/loss Burn method: FCF (opex + capex)
Last Q Avg 4Q Last Q Avg 4Q Last Q Avg 4Q
Cash on hand (at last report) 1.34M 1.34M 1.34M 1.34M 1.34M 1.34M
Cash burn (monthly) (positive/no burn) (positive/no burn) 619.33K 645K 281.67K 353.83K
Cash used (since last report) n/a n/a 2.4M 2.5M 1.09M 1.37M
Cash remaining n/a n/a -1.06M -1.16M 247.35K -32.85K
Runway (months of cash) n/a n/a -1.7 -1.8 0.9 -0.1

Beta Read what these cash burn values mean

Date Owner Security Transaction Code Indirect 10b5-1 $Price #Shares $Value #Remaining
1 Jul 21 Roberts Kent Charles II Option to Purchase Common Stock Common stock Grant Aquire A No No 0.17 88,235 15K 2,166,102
1 Jul 21 Runyan John S. Option to Purchase Common Stock Common stock Grant Aquire A No No 0.17 110,294 18.75K 2,432,264
1 Jul 21 Strommen Jack B. Option to Purchase Common Stock Common stock Grant Aquire A No No 0.17 88,235 15K 1,046,778
1 Jul 21 Marshall Dennis E Option to Purchase Common Stock Common stock Grant Aquire A No No 0.17 110,294 18.75K 3,180,749
21 May 21 Provenzano Joseph L Option to purchase common stock Common stock Grant Aquire A No No 0.18 50,000 9K 1,508,661

Data for the last complete 13F reporting period. To see the most recent changes to ownership, click the ownership history button above.

0.1% owned by funds/institutions
13F holders
Current Prev Q Change
Total holders 2 1 +100.0%
Opened positions 1 0 NEW
Closed positions 0 0
Increased positions 0 0
Reduced positions 0 0
13F shares
Current Prev Q Change
Total value 15K 18K -16.7%
Total shares 132.84K 117.84K +12.7%
Total puts 0 0
Total calls 0 0
Total put/call ratio
Largest owners
Shares Value Change
First American Trust, FSB 117.84K $14K 0.0%
Vanguard Capital Wealth Advisors 15K $1K NEW
Largest transactions
Shares Bought/sold Change
Vanguard Capital Wealth Advisors 15K +15K NEW
First American Trust, FSB 117.84K 0 0.0%
Content analysis
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