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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2021-12-31$0.21$0.21213,000
2021-12-30$0.23$0.23706,600
2021-12-29$0.20$0.2088,200
2021-12-28$0.20$0.2087,200
2021-12-27$0.19$0.19460,000
2021-12-23$0.19$0.19504,700
2021-12-22$0.19$0.19248,500
2021-12-21$0.19$0.19115,500
2021-12-20$0.20$0.20336,400
2021-12-17$0.20$0.20219,300
2021-12-16$0.21$0.21222,200
2021-12-15$0.21$0.21146,700
2021-12-14$0.21$0.21339,500
2021-12-13$0.22$0.22191,500
2021-12-10$0.22$0.22265,600
2021-12-09$0.22$0.22150,500
2021-12-08$0.22$0.22174,500
2021-12-07$0.22$0.22291,600
2021-12-06$0.23$0.23249,900
2021-12-03$0.23$0.23228,900
2021-12-02$0.23$0.23288,900
2021-12-01$0.23$0.23602,600
2021-11-30$0.23$0.23897,800
2021-11-29$0.21$0.21717,900
2021-11-26$0.21$0.21234,900
2021-11-24$0.20$0.20163,300
2021-11-23$0.20$0.20680,000
2021-11-22$0.21$0.21296,500
2021-11-19$0.20$0.20218,300
2021-11-18$0.21$0.211,044,200
2021-11-17$0.19$0.19720,800
2021-11-16$0.19$0.19846,500
2021-11-15$0.17$0.17299,100
2021-11-12$0.18$0.18424,500
2021-11-11$0.17$0.17459,700
2021-11-10$0.17$0.17438,000
2021-11-09$0.17$0.17201,000
2021-11-08$0.17$0.17296,400
2021-11-05$0.17$0.17332,900
2021-11-04$0.17$0.17232,600
2021-11-03$0.17$0.17242,700
2021-11-02$0.18$0.18323,200
2021-11-01$0.18$0.18315,200
2021-10-29$0.18$0.18353,000
2021-10-28$0.17$0.17360,100
2021-10-27$0.17$0.17207,200
2021-10-26$0.17$0.17277,200
2021-10-25$0.17$0.17426,600
2021-10-22$0.17$0.17318,200
2021-10-21$0.18$0.18298,900
2021-10-20$0.17$0.17352,800
2021-10-19$0.18$0.18227,700
2021-10-18$0.18$0.18172,200
2021-10-15$0.18$0.18249,900
2021-10-14$0.17$0.17253,300
2021-10-13$0.18$0.18478,300
2021-10-12$0.18$0.18262,600
2021-10-11$0.18$0.18268,500
2021-10-08$0.18$0.18203,400
2021-10-07$0.19$0.19731,700
2021-10-06$0.19$0.1984,300
2021-10-05$0.19$0.19231,500
2021-10-04$0.19$0.19165,500
2021-10-01$0.19$0.19593,800
2021-09-30$0.19$0.19288,500
2021-09-29$0.19$0.1957,100
2021-09-28$0.19$0.1948,900
2021-09-27$0.19$0.19240,200
2021-09-24$0.18$0.18159,500
2021-09-23$0.18$0.1867,900
2021-09-22$0.18$0.18105,900
2021-09-21$0.18$0.18356,800
2021-09-20$0.17$0.17769,000
2021-09-17$0.18$0.1871,800
2021-09-16$0.18$0.18257,900
2021-09-15$0.18$0.18232,700
2021-09-14$0.18$0.18294,300
2021-09-13$0.18$0.18251,100
2021-09-10$0.18$0.18319,100
2021-09-09$0.19$0.19148,400
2021-09-08$0.19$0.19277,500
2021-09-07$0.19$0.19481,800
2021-09-03$0.19$0.19200,500
2021-09-02$0.19$0.1988,900
2021-09-01$0.19$0.19178,700
2021-08-31$0.19$0.19175,100
2021-08-30$0.20$0.20202,400
2021-08-27$0.20$0.20396,900
2021-08-26$0.19$0.19210,000
2021-08-25$0.20$0.20239,700
2021-08-24$0.20$0.20173,500
2021-08-23$0.20$0.20594,200
2021-08-20$0.19$0.19286,900
2021-08-19$0.18$0.18538,900
2021-08-18$0.18$0.18606,700
2021-08-17$0.20$0.20705,800
2021-08-16$0.21$0.21375,400
2021-08-13$0.21$0.21160,600
2021-08-12$0.20$0.20368,100
2021-08-11$0.21$0.21430,500
2021-08-10$0.21$0.21498,900
2021-08-09$0.20$0.20529,100
2021-08-06$0.20$0.20203,900
2021-08-05$0.20$0.20829,300
2021-08-04$0.20$0.20338,500
2021-08-03$0.21$0.21253,900
2021-08-02$0.21$0.21849,900
2021-07-30$0.20$0.20487,700
2021-07-29$0.22$0.22531,400
2021-07-28$0.21$0.21322,400
2021-07-27$0.21$0.21358,500
2021-07-26$0.19$0.19405,600
2021-07-23$0.18$0.18187,600
2021-07-22$0.18$0.1862,600
2021-07-21$0.18$0.18127,900
2021-07-20$0.18$0.18376,400
2021-07-19$0.19$0.19442,900
2021-07-16$0.19$0.19262,800
2021-07-15$0.19$0.19226,700
2021-07-14$0.20$0.20358,700
2021-07-13$0.21$0.21351,400
2021-07-12$0.21$0.21680,000
2021-07-09$0.20$0.20367,900
2021-07-08$0.20$0.20379,900
2021-07-07$0.21$0.21908,400
2021-07-06$0.21$0.21936,800
2021-07-02$0.20$0.202,866,600
2021-07-01$0.17$0.17297,900
2021-06-30$0.17$0.17249,100
2021-06-29$0.17$0.17158,600
2021-06-28$0.17$0.17262,100
2021-06-25$0.17$0.17177,500
2021-06-24$0.17$0.1784,600
2021-06-23$0.17$0.171,113,000
2021-06-22$0.16$0.16873,400
2021-06-21$0.18$0.18391,500
2021-06-18$0.18$0.18362,400
2021-06-17$0.18$0.18588,000
2021-06-16$0.18$0.18526,100
2021-06-15$0.17$0.17651,400
2021-06-14$0.18$0.18771,400
2021-06-11$0.17$0.17268,400
2021-06-10$0.17$0.17299,300
2021-06-09$0.18$0.18367,100
2021-06-08$0.18$0.18368,200
2021-06-07$0.18$0.18225,800
2021-06-04$0.18$0.18175,600
2021-06-03$0.18$0.18177,400
2021-06-02$0.17$0.17357,400
2021-06-01$0.17$0.17183,900
2021-05-28$0.17$0.17259,800
2021-05-27$0.17$0.17148,500
2021-05-26$0.17$0.1778,900
2021-05-25$0.18$0.1844,400
2021-05-24$0.18$0.18174,400
2021-05-21$0.18$0.18154,500
2021-05-20$0.18$0.18154,700
2021-05-19$0.18$0.1848,200
2021-05-18$0.18$0.18167,200
2021-05-17$0.18$0.18215,900
2021-05-14$0.19$0.19250,600
2021-05-13$0.18$0.1850,500
2021-05-12$0.18$0.18327,100
2021-05-11$0.18$0.18302,200
2021-05-10$0.16$0.16668,200
2021-05-07$0.17$0.17764,000
2021-05-06$0.17$0.17822,900
2021-05-05$0.18$0.18565,700
2021-05-04$0.18$0.18569,500
2021-05-03$0.19$0.19470,900
2021-04-30$0.19$0.19429,900
2021-04-29$0.19$0.19393,100
2021-04-28$0.19$0.19398,000
2021-04-27$0.20$0.20139,400
2021-04-26$0.19$0.19643,100
2021-04-23$0.20$0.20312,400
2021-04-22$0.20$0.20692,900
2021-04-21$0.19$0.19148,500
2021-04-20$0.19$0.19184,000
2021-04-19$0.19$0.19320,600
2021-04-16$0.19$0.19122,600
2021-04-15$0.19$0.19151,700
2021-04-14$0.19$0.1991,600
2021-04-13$0.19$0.19272,200
2021-04-12$0.19$0.19990,300
2021-04-09$0.22$0.2275,900
2021-04-08$0.22$0.22168,300
2021-04-07$0.22$0.22196,300
2021-04-06$0.23$0.23226,200
2021-04-05$0.23$0.23374,500
2021-04-01$0.24$0.24570,100
2021-03-31$0.23$0.23581,400
2021-03-30$0.20$0.20289,700
2021-03-29$0.19$0.19205,300
2021-03-26$0.18$0.18351,100
2021-03-25$0.20$0.20585,600
2021-03-24$0.23$0.23798,500
2021-03-23$0.22$0.221,510,900
2021-03-22$0.20$0.201,113,100
2021-03-19$0.17$0.17300,800
2021-03-18$0.17$0.17245,000
2021-03-17$0.18$0.18255,200
2021-03-16$0.18$0.18195,600
2021-03-15$0.18$0.18358,300
2021-03-12$0.18$0.18785,600
2021-03-11$0.17$0.17207,800
2021-03-10$0.17$0.17216,400
2021-03-09$0.17$0.17297,100
2021-03-08$0.15$0.15281,300
2021-03-05$0.15$0.151,001,600
2021-03-04$0.14$0.141,016,100
2021-03-03$0.16$0.16634,500
2021-03-02$0.16$0.16976,000
2021-03-01$0.16$0.16983,200
2021-02-26$0.16$0.16974,300
2021-02-25$0.17$0.171,582,000
2021-02-24$0.18$0.18739,100
2021-02-23$0.16$0.16709,500
2021-02-22$0.18$0.18595,500
2021-02-19$0.18$0.18588,700
2021-02-18$0.17$0.17685,900
2021-02-17$0.18$0.18877,400
2021-02-16$0.18$0.182,584,400
2021-02-12$0.19$0.19743,600
2021-02-11$0.19$0.191,182,900
2021-02-10$0.19$0.19875,200
2021-02-09$0.20$0.201,039,100
2021-02-08$0.22$0.221,199,000
2021-02-05$0.19$0.19649,100
2021-02-04$0.19$0.19853,500
2021-02-03$0.20$0.201,211,600
2021-02-02$0.22$0.22700,900
2021-02-01$0.19$0.191,153,100
2021-01-29$0.20$0.20879,900
2021-01-28$0.21$0.211,196,100
2021-01-27$0.21$0.211,718,900
2021-01-26$0.24$0.245,622,800
2021-01-25$0.25$0.253,623,800
2021-01-22$0.17$0.17849,800
2021-01-21$0.15$0.15504,600
2021-01-20$0.15$0.15596,500
2021-01-19$0.14$0.14466,700
2021-01-15$0.14$0.14380,100
2021-01-14$0.14$0.14540,700
2021-01-13$0.14$0.14374,600
2021-01-12$0.15$0.15380,700
2021-01-11$0.16$0.161,102,100
2021-01-08$0.15$0.15573,800
2021-01-07$0.15$0.15735,900
2021-01-06$0.14$0.14461,100
2021-01-05$0.14$0.14583,000
2021-01-04$0.13$0.13868,700