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


29 Mar 21
13 Apr 21
31 Dec 21
Quarter (USD)
Dec 20 Sep 20 Jun 20 Mar 20
Cost of revenue
Operating income
Operating margin
Net income
Net profit margin
Cash on hand
Change in cash
Diluted EPS
Annual (USD)
Dec 20 Dec 19 Dec 18 Dec 17
Cost of revenue
Operating income
Operating margin
Net income
Net profit margin
Cash on hand
Change in cash
Diluted EPS

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) 716K 716K 716K 716K 716K 716K
Cash burn (monthly) 133.67K (positive/no burn) 656K 632K 278.67K 346.17K
Cash used (since last report) 460.17K n/a 2.26M 2.18M 959.36K 1.19M
Cash remaining 255.83K n/a -1.54M -1.46M -243.36K -475.75K
Runway (months of cash) 1.9 n/a -2.4 -2.3 -0.9 -1.4

Beta Read what these cash burn values mean

Date Owner Security Transaction Code Indirect 10b5-1 $Price #Shares $Value #Remaining
1 Apr 21 Calvert Dennis P Common stock Grant Aquire A No No 0.2275 61,758 14.05K 9,658,274
1 Apr 21 Roberts Kent Charles II Option to Purchase Common Stock Common stock Grant Aquire A No No 0.2275 65,934 15K 2,077,867
1 Apr 21 Marshall Dennis E Option to Purchase Common Stock Common stock Grant Aquire A No No 0.2275 82,418 18.75K 3,152,772
1 Apr 21 Strommen Jack B. Option to Purchase Common Stock Common stock Grant Aquire A No No 0.2275 65,934 15K 958,543
1 Apr 21 Code Kenneth Reay Common stock Grant Aquire A No No 0.2275 75,606 17.2K 24,519,253

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

0.0% owned by funds/institutions
13F holders
Current Prev Q Change
Total holders 1 1
Opened positions 0 0
Closed positions 0 0
Increased positions 0 0
Reduced positions 0 0
13F shares
Current Prev Q Change
Total value 18K 19K -5.3%
Total shares 117.84K 117.84K
Total puts 0 0
Total calls 0 0
Total put/call ratio
Largest owners
Shares Value Change
First American Trust, FSB 117.84K $18K 0.0%
Largest transactions
Shares Bought/sold Change
First American Trust, FSB 117.84K 0 0.0%
Content analysis
H.S. freshman Good
New words: academic, acclaimed, adjacent, administered, Airforce, arena, attached, bar, battle, bleach, Branch, brisk, Broadly, CEO, characteristic, charter, check, cholesterol, cleantech, Cluster, Clyraguard, combat, conventional, cookware, correct, covid, CSO, CTE, Cyyra, Daegu, deodorizing, dioxide, discontinue, discontinuing, distancing, Dow, dysfunction, ecomist, embedded, emitted, estate, faster, fewer, filer, float, fluoride, foam, foretell, fraction, friendly, frontline, Galveston, greenhouse, hamper, hereinafter, hexafluoroethane, immune, infertility, influence, infrequent, inquired, intake, IP, keen, Kelber, kind, liver, logistical, longevity, main, MDs, Mineral, Montreal, Orange, orderly, outset, Paessler, paused, Paycheck, pick, plethora, Plumbing, potent, quarantine, Quebec, rebounded, recalcitrant, recalculated, redevelopment, reevaluate, refinanced, repayment, resigned, resume, retiring, revisit, Revolving, roughly, run, safer, saturation, save, secondary, sequestration, Slobodan, smaller, speaking, specialty, steadily, stopped, struggled, subcontractor, Subtopic, surge, tailor, tetrafluoride, theoretically, thirteen, Uniform, unrecognized, vehicle, video, viewed, Voltage, voluntarily, Wisconsin
Removed: agriculture, alliance, assessment, attention, attributable, beneficially, biofilm, biological, build, Californian, capable, chair, chose, chronic, collaboration, complement, compute, conference, considerably, Cosmetic, cradle, default, demonstrate, Department, differentiated, directed, disruption, dosing, Downeast, drug, efficient, electrochemistry, encouraged, equitably, experiencing, exposure, external, familiar, FirstFire, Florida, food, forever, gentle, good, governing, healing, holding, incubate, institutional, introduced, landfill, lowering, maritime, multiplied, narrowly, negotiating, neighbor, notified, notify, occurring, official, offset, pattern, payroll, penalty, permitted, pharmaceutical, phase, piloting, polishing, portal, precise, prepare, presence, provincial, purposeful, pursue, rapid, reflected, regenerative, regional, reliability, reliable, remediate, renegotiate, representing, resale, resistance, RRA, secured, setting, shown, simple, Solidifier, Specimen, split, submitted, target, tendered, therapy, thereof, top, toxic, transport, traumatic, trend, unavailable, understand, USA, validated, veterinary, voluntary, wait, winter