OTC:BLGO | Historical Stock Price | BIOLARGO, INC.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
2007-03-22 to 2026-08-27
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.10$0.17$0.31$0.57$1.04$1.892007-03-222026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2025-12-31$0.18$0.18252,200
2025-12-30$0.18$0.18164,200
2025-12-29$0.18$0.18264,800
2025-12-26$0.18$0.18595,400
2025-12-24$0.18$0.18221,600
2025-12-23$0.18$0.18229,900
2025-12-22$0.18$0.18215,800
2025-12-19$0.18$0.18456,400
2025-12-18$0.18$0.18149,800
2025-12-17$0.18$0.18694,000
2025-12-16$0.18$0.18121,300
2025-12-15$0.18$0.18712,400
2025-12-12$0.18$0.18478,900
2025-12-11$0.18$0.18306,800
2025-12-10$0.18$0.18309,800
2025-12-09$0.18$0.18150,500
2025-12-08$0.18$0.18372,700
2025-12-05$0.19$0.19223,200
2025-12-04$0.19$0.19154,700
2025-12-03$0.19$0.19424,900
2025-12-02$0.19$0.19317,200
2025-12-01$0.19$0.19349,400
2025-11-28$0.18$0.18186,200
2025-11-26$0.18$0.18688,000
2025-11-25$0.19$0.191,046,400
2025-11-24$0.16$0.16568,100
2025-11-21$0.15$0.15775,800
2025-11-20$0.15$0.15218,000
2025-11-19$0.15$0.15937,200
2025-11-18$0.15$0.151,356,400
2025-11-17$0.16$0.16546,300
2025-11-14$0.16$0.16540,200
2025-11-13$0.17$0.17317,400
2025-11-12$0.17$0.1794,300
2025-11-11$0.17$0.17200,300
2025-11-10$0.18$0.18425,000
2025-11-07$0.18$0.181,333,800
2025-11-06$0.16$0.16211,400
2025-11-05$0.16$0.16176,700
2025-11-04$0.16$0.1683,900
2025-11-03$0.16$0.16312,200
2025-10-31$0.16$0.16172,200
2025-10-30$0.16$0.16227,600
2025-10-29$0.17$0.17450,100
2025-10-28$0.17$0.17714,300
2025-10-27$0.17$0.17240,200
2025-10-24$0.16$0.16310,800
2025-10-23$0.16$0.1694,600
2025-10-22$0.17$0.17206,500
2025-10-21$0.17$0.17468,300
2025-10-20$0.19$0.191,368,100
2025-10-17$0.17$0.17632,900
2025-10-16$0.16$0.16429,600
2025-10-15$0.17$0.17404,000
2025-10-14$0.17$0.17550,200
2025-10-13$0.17$0.17381,300
2025-10-10$0.16$0.16798,300
2025-10-09$0.17$0.17808,200
2025-10-08$0.16$0.161,001,100
2025-10-07$0.17$0.17448,900
2025-10-06$0.17$0.17867,700
2025-10-03$0.17$0.17529,000
2025-10-02$0.17$0.17410,000
2025-10-01$0.17$0.17347,900
2025-09-30$0.17$0.17241,700
2025-09-29$0.18$0.18197,300
2025-09-26$0.18$0.18288,700
2025-09-25$0.16$0.163,480,700
2025-09-24$0.19$0.19596,800
2025-09-23$0.19$0.19431,900
2025-09-22$0.20$0.20424,000
2025-09-19$0.20$0.20404,800
2025-09-18$0.21$0.21390,400
2025-09-17$0.22$0.22503,300
2025-09-16$0.23$0.23671,000
2025-09-15$0.22$0.22544,300
2025-09-12$0.21$0.21154,800
2025-09-11$0.23$0.23238,900
2025-09-10$0.23$0.23193,100
2025-09-09$0.21$0.21192,500
2025-09-08$0.21$0.21536,900
2025-09-05$0.22$0.22856,700
2025-09-04$0.22$0.22151,000
2025-09-03$0.23$0.23268,400
2025-09-02$0.22$0.22242,400
2025-08-29$0.22$0.22179,200
2025-08-28$0.22$0.22728,900
2025-08-27$0.21$0.21375,100
2025-08-26$0.21$0.21263,400
2025-08-25$0.19$0.19318,100
2025-08-22$0.20$0.20190,600
2025-08-21$0.19$0.19450,100
2025-08-20$0.19$0.19417,500
2025-08-19$0.19$0.19599,300
2025-08-18$0.18$0.18289,300
2025-08-15$0.18$0.18345,200
2025-08-14$0.18$0.1891,200
2025-08-13$0.18$0.18395,700
2025-08-12$0.17$0.17495,800
2025-08-11$0.17$0.17292,800
2025-08-08$0.17$0.17364,100
2025-08-07$0.17$0.17296,200
2025-08-06$0.17$0.1782,200
2025-08-05$0.17$0.17249,600
2025-08-04$0.17$0.17318,500
2025-08-01$0.18$0.18328,200
2025-07-31$0.18$0.18521,000
2025-07-30$0.18$0.18275,300
2025-07-29$0.18$0.18387,700
2025-07-28$0.18$0.18393,300
2025-07-25$0.19$0.19227,700
2025-07-24$0.18$0.18331,500
2025-07-23$0.18$0.18627,000
2025-07-22$0.19$0.19356,200
2025-07-21$0.19$0.191,416,100
2025-07-18$0.19$0.19703,900
2025-07-17$0.19$0.19497,600
2025-07-16$0.19$0.19243,900
2025-07-15$0.20$0.20198,400
2025-07-14$0.20$0.20482,900
2025-07-11$0.20$0.20222,900
2025-07-10$0.20$0.20216,200
2025-07-09$0.20$0.20491,700
2025-07-08$0.20$0.20326,500
2025-07-07$0.20$0.20169,900
2025-07-03$0.20$0.20242,200
2025-07-02$0.20$0.20131,700
2025-07-01$0.20$0.20690,300
2025-06-30$0.21$0.21505,800
2025-06-27$0.20$0.20272,000
2025-06-26$0.20$0.20622,800
2025-06-25$0.21$0.21315,400
2025-06-24$0.21$0.21375,800
2025-06-23$0.21$0.21329,700
2025-06-20$0.21$0.21666,300
2025-06-18$0.21$0.21223,600
2025-06-17$0.20$0.20295,600
2025-06-16$0.20$0.20389,100
2025-06-13$0.20$0.20292,900
2025-06-12$0.20$0.20531,200
2025-06-11$0.20$0.20597,800
2025-06-10$0.21$0.21938,100
2025-06-09$0.21$0.21628,800
2025-06-06$0.22$0.22506,500
2025-06-05$0.20$0.20122,400
2025-06-04$0.21$0.21348,500
2025-06-03$0.21$0.21320,300
2025-06-02$0.22$0.22112,800
2025-05-30$0.21$0.21117,600
2025-05-29$0.21$0.21531,700
2025-05-28$0.20$0.20688,300
2025-05-27$0.21$0.21362,800
2025-05-23$0.22$0.22330,500
2025-05-22$0.22$0.22811,300
2025-05-21$0.21$0.21520,300
2025-05-20$0.21$0.2175,400
2025-05-19$0.21$0.21243,100
2025-05-16$0.21$0.21687,300
2025-05-15$0.24$0.24369,900
2025-05-14$0.24$0.24204,900
2025-05-13$0.26$0.26613,200
2025-05-12$0.25$0.25522,400
2025-05-09$0.24$0.24354,900
2025-05-08$0.25$0.25416,600
2025-05-07$0.24$0.24250,500
2025-05-06$0.23$0.23566,200
2025-05-05$0.22$0.22641,900
2025-05-02$0.22$0.22170,100
2025-05-01$0.23$0.23182,100
2025-04-30$0.22$0.22208,500
2025-04-29$0.23$0.23222,300
2025-04-28$0.24$0.24112,800
2025-04-25$0.24$0.2412,700
2025-04-24$0.23$0.23108,600
2025-04-23$0.23$0.23111,100
2025-04-22$0.23$0.23147,500
2025-04-21$0.24$0.24116,800
2025-04-17$0.23$0.2380,400
2025-04-16$0.24$0.24188,000
2025-04-15$0.24$0.2437,700
2025-04-14$0.24$0.24245,000
2025-04-11$0.23$0.23181,000
2025-04-10$0.24$0.2469,000
2025-04-09$0.24$0.24428,700
2025-04-08$0.24$0.24317,600
2025-04-07$0.24$0.24314,000
2025-04-04$0.25$0.25344,100
2025-04-03$0.27$0.27165,400
2025-04-02$0.28$0.28109,000
2025-04-01$0.27$0.27227,600
2025-03-31$0.28$0.28312,600
2025-03-28$0.28$0.28227,100
2025-03-27$0.28$0.2857,100
2025-03-26$0.29$0.2911,700
2025-03-25$0.29$0.2989,700
2025-03-24$0.29$0.29136,200
2025-03-21$0.29$0.29156,600
2025-03-20$0.28$0.28394,200
2025-03-19$0.28$0.28404,000
2025-03-18$0.26$0.26135,500
2025-03-17$0.26$0.26153,500
2025-03-14$0.26$0.26315,200
2025-03-13$0.24$0.24142,500
2025-03-12$0.25$0.25319,200
2025-03-11$0.25$0.25214,700
2025-03-10$0.27$0.27321,700
2025-03-07$0.26$0.26104,900
2025-03-06$0.26$0.26157,200
2025-03-05$0.26$0.26145,300
2025-03-04$0.26$0.26192,500
2025-03-03$0.25$0.25227,200
2025-02-28$0.26$0.26324,100
2025-02-27$0.25$0.25272,500
2025-02-26$0.25$0.2595,800
2025-02-25$0.27$0.27405,800
2025-02-24$0.26$0.26327,700
2025-02-21$0.26$0.26195,400
2025-02-20$0.26$0.26214,900
2025-02-19$0.26$0.26286,400
2025-02-18$0.25$0.25345,000
2025-02-14$0.26$0.26123,300
2025-02-13$0.26$0.26270,000
2025-02-12$0.26$0.26302,500
2025-02-11$0.27$0.27158,100
2025-02-10$0.28$0.2859,400
2025-02-07$0.27$0.27198,200
2025-02-06$0.26$0.26286,800
2025-02-05$0.27$0.2720,600
2025-02-04$0.26$0.26219,500
2025-02-03$0.24$0.24358,400
2025-01-31$0.25$0.2562,500
2025-01-30$0.26$0.26179,400
2025-01-29$0.26$0.26236,500
2025-01-28$0.25$0.2534,200
2025-01-27$0.25$0.25501,400
2025-01-24$0.25$0.25142,800
2025-01-23$0.26$0.26759,200
2025-01-22$0.27$0.27314,700
2025-01-21$0.29$0.29164,000
2025-01-17$0.29$0.29154,400
2025-01-16$0.29$0.29363,300
2025-01-15$0.29$0.29286,100
2025-01-14$0.30$0.30184,600
2025-01-13$0.30$0.30159,100
2025-01-10$0.30$0.30122,500
2025-01-08$0.30$0.30600,300
2025-01-07$0.30$0.30607,000
2025-01-06$0.29$0.291,112,200
2025-01-03$0.25$0.25448,100
2025-01-02$0.23$0.23477,600