Stock listing

OTC:BLGO BioLargo, Inc. Stock

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Share price · OTC:BLGO

$0.075 USD +0.003 (+3.4%)

Close on Nov 4, 2026

Past year -53.1% · daily closes, Nov 4, 2025 – Nov 4, 2026, adjusted for splits
Day range
$0.073 – $0.075 USDNov 4, 2026
Volume
24,881 sharesNov 4, 2026
Market cap
$25.10M USDAt the close on Nov 4, 2026 · price × 334.7M shares outstanding
52-week range
$0.062 – $0.200 USDLowest and highest trades, Nov 5, 2025 – Nov 4, 2026
Traded on an average day
$35,045 USDMedian day 297,151 shares · last 3 months, Aug 4, 2026 – Nov 4, 2026
BioLargo, Inc. logo

Daily closes

Last 3 months, Aug 4, 2026 – Nov 4, 2026 · OTC:BLGO · USD, adjusted for splits

DayCloseChange%OpenHighLowVolume
$0.075+0.003+3.4%$0.073$0.075$0.07324,881
$0.073+0.001+0.7%$0.072$0.079$0.070296,302
$0.072+0.010+16.1%$0.067$0.078$0.066613,870
$0.062-0.003-4.6%$0.065$0.067$0.062176,541
$0.065+0.002+3.2%$0.069$0.069$0.063128,965
$0.063-0.006-8.7%$0.064$0.067$0.063202,086
$0.069+0.001+1.5%$0.070$0.070$0.063265,161
$0.068-0.002-2.9%$0.072$0.072$0.068159,800
$0.0700.0000.0%$0.070$0.070$0.070244,200
$0.0700.0000.0%$0.070$0.070$0.070172,900
$0.0700.0000.0%$0.070$0.070$0.070310,600
$0.0700.0000.0%$0.070$0.070$0.070319,500
$0.0700.0000.0%$0.070$0.070$0.070290,500
$0.0700.0000.0%$0.070$0.070$0.070292,200
$0.070-0.010-12.5%$0.080$0.080$0.070287,000
$0.0800.0000.0%$0.070$0.080$0.070298,000
$0.0800.0000.0%$0.080$0.080$0.070446,500
$0.0800.0000.0%$0.080$0.090$0.080844,300
$0.0800.0000.0%$0.080$0.080$0.08089,400
$0.0800.0000.0%$0.070$0.080$0.070774,300
$0.080+0.010+14.3%$0.080$0.080$0.080434,100
$0.070-0.010-12.5%$0.080$0.080$0.070380,400
$0.0800.0000.0%$0.080$0.080$0.0801,428,100
$0.0800.0000.0%$0.080$0.080$0.080141,600
$0.0800.0000.0%$0.080$0.080$0.080168,800
$0.0800.0000.0%$0.080$0.090$0.080492,400
$0.080-0.010-11.1%$0.080$0.090$0.080182,900
$0.0900.0000.0%$0.090$0.090$0.090211,900
$0.0900.0000.0%$0.090$0.090$0.080704,800
$0.0900.0000.0%$0.090$0.090$0.090260,100
$0.0900.0000.0%$0.090$0.090$0.090465,900
$0.0900.0000.0%$0.090$0.100$0.090173,500
$0.0900.0000.0%$0.100$0.100$0.090577,100
$0.0900.0000.0%$0.100$0.100$0.090296,100
$0.0900.0000.0%$0.090$0.100$0.090362,100
$0.0900.0000.0%$0.100$0.100$0.090136,900
$0.090-0.010-10.0%$0.090$0.100$0.090789,000
$0.1000.0000.0%$0.100$0.100$0.09077,600
$0.1000.0000.0%$0.100$0.100$0.090754,600
$0.1000.0000.0%$0.090$0.100$0.090471,200
$0.1000.0000.0%$0.100$0.100$0.090425,500
$0.100+0.010+11.1%$0.090$0.100$0.090648,000
$0.0900.0000.0%$0.090$0.090$0.090532,800
$0.090-0.010-10.0%$0.090$0.100$0.090666,500
$0.100+0.010+11.1%$0.100$0.100$0.090880,900
$0.090-0.010-10.0%$0.100$0.100$0.090239,700
$0.1000.0000.0%$0.100$0.110$0.100334,000
$0.1000.0000.0%$0.100$0.100$0.100108,900
$0.100-0.010-9.1%$0.110$0.110$0.100501,300
$0.1100.0000.0%$0.110$0.110$0.100157,200
$0.1100.0000.0%$0.110$0.110$0.100190,300
$0.110+0.010+10.0%$0.100$0.110$0.100273,300
$0.100+0.020+25.0%$0.080$0.100$0.0801,124,400
$0.080-0.020-20.0%$0.100$0.100$0.0801,337,700
$0.1000.0000.0%$0.100$0.100$0.090290,400
$0.1000.0000.0%$0.100$0.100$0.090332,400
$0.1000.0000.0%$0.100$0.110$0.100209,800
$0.1000.0000.0%$0.100$0.100$0.100138,900
$0.1000.0000.0%$0.110$0.110$0.100306,800
$0.100-0.010-9.1%$0.110$0.110$0.100102,700
$0.1100.0000.0%$0.110$0.110$0.100155,000
$0.1100.0000.0%$0.110$0.110$0.100165,200
$0.110+0.010+10.0%$0.110$0.110$0.100489,400
$0.100-0.010-9.1%$0.100$0.110$0.100456,300
$0.1100.0000.0%$0.110$0.110$0.100526,100
$0.1100.0000.0%$0.100$0.110$0.100665,900
Ticker
OTC:BLGO
Asset type
Stock
Exchange
OTC
Currency
USD

What changed lately

Calls

Replays

  • BioLargo (OTC:BLGO) Q4 2025 Earnings Call

    Thu, Mar 05, 2026 · 12:00 PM ET

    Watch Transcript

  • BioLargo (OTC:BLGO) Q3 2025 Earnings Call

    Fri, Nov 14, 2025 · 4:30 PM ET

    Watch Transcript

  • BioLargo (OTC:BLGO) Q2 2025 Earnings Call

    Fri, Aug 15, 2025 · 11:00 AM ET

    Watch Transcript

Latest news

BioLargo Announces Launch of barebird.com

Nov 3, 2026

Closed $0.073 (+0.7%) on Nov 3, 2026

BioLargo's Clyra Medical Gains Commercial Traction as Clinician Enthusiasm Drives Health System Adoption

Nov 2, 2026

Closed $0.072 (+16.1%) on Nov 2, 2026

BioLargo Introduces barebird, a Company-Owned Brand, Reuniting Key Teams Behind Pooph's Consumer Market Success

Oct 28, 2026

Closed $0.063 (-8.7%) on Oct 28, 2026

BioLargo Subsidiary Clyra Medical to Exhibit at SAWC Fall 2026 in Las Vegas

Oct 13, 2026

Closed $0.08 (0.0%) on Oct 13, 2026

BioLargo, Inc. to Present at November 21st Virtual Investor Summit Microcap Event

Nov 11, 2024

All BioLargo, Inc. news

Decks

BioLargo, Inc. on 6ix

News releases
4 in the last 12 months · 5 in all · newest Nov 3, 2026 · oldest 2024
Calls
15 calls with a replay · 15 with a transcript · latest Mar 5, 2026
Decks
26 decks · latest Sep 14, 2026

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