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 — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2008-12-31$0.41$0.411,000
2008-12-30$0.59$0.590
2008-12-29$0.59$0.590
2008-12-26$0.59$0.5910,900
2008-12-24$0.49$0.490
2008-12-23$0.49$0.491,100
2008-12-22$0.50$0.5012,000
2008-12-19$0.50$0.500
2008-12-18$0.50$0.509,500
2008-12-17$0.41$0.410
2008-12-16$0.41$0.410
2008-12-15$0.41$0.410
2008-12-12$0.41$0.412,000
2008-12-11$0.41$0.41100
2008-12-10$0.70$0.700
2008-12-09$0.70$0.700
2008-12-08$0.70$0.700
2008-12-05$0.70$0.700
2008-12-04$0.70$0.700
2008-12-03$0.70$0.700
2008-12-02$0.70$0.70100
2008-12-01$0.60$0.605,100
2008-11-28$0.70$0.700
2008-11-26$0.70$0.701,000
2008-11-25$0.78$0.780
2008-11-24$0.78$0.78200
2008-11-21$0.70$0.701,400
2008-11-20$0.78$0.782,100
2008-11-19$0.35$0.351,000
2008-11-18$0.77$0.77500
2008-11-17$0.35$0.35200
2008-11-14$0.35$0.352,300
2008-11-13$0.78$0.780
2008-11-12$0.78$0.780
2008-11-11$0.78$0.780
2008-11-10$0.78$0.780
2008-11-07$0.78$0.780
2008-11-06$0.78$0.783,400
2008-11-05$0.78$0.78100
2008-11-04$0.37$0.370
2008-11-03$0.37$0.37300
2008-10-31$0.35$0.350
2008-10-30$0.35$0.350
2008-10-29$0.35$0.350
2008-10-28$0.35$0.350
2008-10-27$0.35$0.35300
2008-10-24$0.35$0.35400
2008-10-23$0.78$0.780
2008-10-22$0.78$0.783,000
2008-10-21$0.79$0.791,200
2008-10-20$0.51$0.511,000
2008-10-17$0.51$0.511,600
2008-10-16$0.51$0.51900
2008-10-15$0.80$0.807,400
2008-10-14$0.37$0.370
2008-10-13$0.37$0.37400
2008-10-10$0.52$0.520
2008-10-09$0.52$0.520
2008-10-08$0.52$0.520
2008-10-07$0.52$0.529,700
2008-10-06$0.55$0.550
2008-10-03$0.55$0.55400
2008-10-02$0.65$0.651,200
2008-10-01$0.89$0.890
2008-09-30$0.89$0.892,500
2008-09-29$0.78$0.780
2008-09-26$0.78$0.780
2008-09-25$0.78$0.780
2008-09-24$0.78$0.78600
2008-09-23$0.79$0.790
2008-09-22$0.79$0.791,500
2008-09-19$0.79$0.790
2008-09-18$0.79$0.790
2008-09-17$0.79$0.79800
2008-09-16$0.79$0.793,100
2008-09-15$0.91$0.913,500
2008-09-12$0.70$0.702,000
2008-09-11$0.75$0.751,000
2008-09-10$0.89$0.890
2008-09-09$0.89$0.890
2008-09-08$0.89$0.890
2008-09-05$0.89$0.8914,000
2008-09-04$0.95$0.950
2008-09-03$0.95$0.950
2008-09-02$0.95$0.951,300
2008-08-29$0.90$0.900
2008-08-28$0.90$0.900
2008-08-27$0.90$0.901,800
2008-08-26$0.90$0.906,400
2008-08-25$0.90$0.900
2008-08-22$0.90$0.900
2008-08-21$0.90$0.905,300
2008-08-20$0.90$0.900
2008-08-19$0.90$0.906,100
2008-08-18$0.85$0.850
2008-08-15$0.85$0.850
2008-08-14$0.85$0.850
2008-08-13$0.85$0.852,400
2008-08-12$0.61$0.61400
2008-08-11$0.88$0.880
2008-08-08$0.88$0.880
2008-08-07$0.88$0.881,000
2008-08-06$0.88$0.882,300
2008-08-05$0.62$0.622,600
2008-08-04$0.99$0.990
2008-08-01$0.99$0.990
2008-07-31$0.99$0.992,100
2008-07-30$0.95$0.952,400
2008-07-29$0.95$0.95800
2008-07-28$1.00$1.000
2008-07-25$1.00$1.000
2008-07-24$1.00$1.000
2008-07-23$1.00$1.000
2008-07-22$1.00$1.000
2008-07-21$1.00$1.001,500
2008-07-18$1.00$1.00500
2008-07-17$1.01$1.010
2008-07-16$1.01$1.010
2008-07-15$1.01$1.011,500
2008-07-14$1.05$1.050
2008-07-11$1.05$1.050
2008-07-10$1.05$1.050
2008-07-09$1.05$1.052,000
2008-07-08$0.90$0.90500
2008-07-07$0.70$0.700
2008-07-03$0.70$0.700
2008-07-02$0.70$0.703,000
2008-07-01$1.30$1.305,400
2008-06-30$1.10$1.102,200
2008-06-27$1.10$1.101,000
2008-06-26$1.10$1.107,600
2008-06-25$1.25$1.251,000
2008-06-24$1.25$1.251,000
2008-06-23$1.30$1.30100
2008-06-20$1.30$1.301,200
2008-06-19$1.15$1.153,000
2008-06-18$1.12$1.1215,100
2008-06-17$1.10$1.104,800
2008-06-16$1.10$1.102,000
2008-06-13$1.44$1.443,000
2008-06-12$1.60$1.600
2008-06-11$1.60$1.602,100
2008-06-10$1.60$1.606,200
2008-06-09$1.50$1.503,000
2008-06-06$1.50$1.503,200
2008-06-05$1.25$1.254,000
2008-06-04$1.25$1.25200
2008-06-03$1.45$1.451,000
2008-06-02$1.60$1.601,000
2008-05-30$1.55$1.5511,200
2008-05-29$1.45$1.45700
2008-05-28$1.50$1.504,600
2008-05-27$1.65$1.650
2008-05-23$1.65$1.653,700
2008-05-22$1.50$1.5012,100
2008-05-21$1.65$1.650
2008-05-20$1.65$1.652,000
2008-05-19$1.50$1.50200
2008-05-16$1.65$1.652,200
2008-05-15$1.70$1.705,700
2008-05-14$1.70$1.704,000
2008-05-13$1.65$1.650
2008-05-12$1.65$1.655,600
2008-05-09$1.70$1.700
2008-05-08$1.70$1.708,100
2008-05-07$1.70$1.702,800
2008-05-06$1.70$1.701,500
2008-05-05$1.70$1.704,500
2008-05-02$1.70$1.701,700
2008-05-01$1.25$1.253,200
2008-04-30$1.65$1.652,700
2008-04-29$1.70$1.702,000
2008-04-28$1.70$1.702,900
2008-04-25$1.68$1.6810,300
2008-04-24$1.68$1.682,000
2008-04-23$1.65$1.655,200
2008-04-22$1.70$1.702,000
2008-04-21$1.70$1.700
2008-04-18$1.70$1.704,100
2008-04-17$1.60$1.601,500
2008-04-16$1.60$1.607,000
2008-04-15$1.50$1.508,800
2008-04-14$1.25$1.257,200
2008-04-11$1.25$1.250
2008-04-10$1.25$1.25100
2008-04-09$1.01$1.012,100
2008-04-08$1.05$1.052,000
2008-04-07$1.10$1.108,300
2008-04-04$1.15$1.156,000
2008-04-03$1.15$1.156,000
2008-04-02$1.01$1.014,500
2008-04-01$1.20$1.202,200
2008-03-31$1.20$1.202,000
2008-03-28$1.20$1.203,000
2008-03-27$1.50$1.502,100
2008-03-26$1.20$1.202,300
2008-03-25$1.60$1.607,600
2008-03-24$1.01$1.011,000
2008-03-20$1.11$1.113,300
2008-03-19$1.50$1.502,300
2008-03-18$1.40$1.405,200
2008-03-17$1.25$1.250
2008-03-14$1.25$1.253,000
2008-03-13$1.17$1.171,000
2008-03-12$0.80$0.804,600
2008-03-11$1.20$1.20200
2008-03-10$1.20$1.200
2008-03-07$1.20$1.201,000
2008-03-06$1.30$1.300
2008-03-05$1.30$1.300
2008-03-04$1.30$1.305,400
2008-03-03$1.03$1.0316,000
2008-02-29$1.20$1.2011,300
2008-02-28$1.20$1.205,400
2008-02-27$1.34$1.346,600
2008-02-26$1.30$1.309,000
2008-02-25$1.45$1.456,500
2008-02-22$1.45$1.457,100
2008-02-21$1.40$1.401,600
2008-02-20$1.45$1.457,700
2008-02-19$1.50$1.504,400
2008-02-15$1.69$1.694,800
2008-02-14$1.69$1.697,000
2008-02-13$1.50$1.501,700
2008-02-12$1.50$1.503,500
2008-02-11$1.64$1.646,100
2008-02-08$1.88$1.885,200
2008-02-07$1.88$1.887,100
2008-02-06$1.88$1.884,700
2008-02-05$1.89$1.893,100
2008-02-04$1.85$1.851,100
2008-02-01$1.89$1.891,000
2008-01-31$1.80$1.8036,300
2008-01-30$1.80$1.8012,800
2008-01-29$1.90$1.90100
2008-01-28$1.70$1.708,900
2008-01-25$2.00$2.0019,100
2008-01-24$1.99$1.9916,300
2008-01-23$1.70$1.7022,900
2008-01-22$1.29$1.297,400
2008-01-18$1.40$1.408,700
2008-01-17$1.25$1.2553,900
2008-01-16$0.75$0.7525,300
2008-01-15$0.99$0.99600
2008-01-14$0.99$0.9914,000
2008-01-11$0.99$0.996,000
2008-01-10$0.99$0.9911,500
2008-01-09$1.00$1.0023,400
2008-01-08$1.00$1.000
2008-01-07$1.00$1.00200
2008-01-04$1.01$1.01500
2008-01-03$0.95$0.9512,700
2008-01-02$0.96$0.960