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 — 2009

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2009-12-31$0.70$0.707,300
2009-12-30$0.45$0.452,500
2009-12-29$0.75$0.7510,400
2009-12-28$0.65$0.652,500
2009-12-24$0.59$0.590
2009-12-23$0.59$0.599,800
2009-12-22$0.59$0.590
2009-12-21$0.59$0.590
2009-12-18$0.59$0.59200
2009-12-17$0.65$0.652,400
2009-12-16$0.55$0.55200
2009-12-15$0.55$0.55700
2009-12-14$0.55$0.554,000
2009-12-11$0.70$0.704,000
2009-12-10$0.80$0.800
2009-12-09$0.80$0.805,200
2009-12-08$0.80$0.803,500
2009-12-07$0.70$0.701,200
2009-12-04$0.80$0.800
2009-12-03$0.80$0.801,000
2009-12-02$0.80$0.801,500
2009-12-01$0.80$0.803,200
2009-11-30$0.57$0.572,200
2009-11-27$0.80$0.800
2009-11-25$0.80$0.80500
2009-11-24$0.75$0.751,000
2009-11-23$0.72$0.724,300
2009-11-20$0.70$0.7024,500
2009-11-19$0.72$0.7211,500
2009-11-18$0.61$0.6115,500
2009-11-17$0.70$0.7025,000
2009-11-16$0.71$0.712,800
2009-11-13$0.70$0.7016,200
2009-11-12$0.62$0.626,800
2009-11-11$0.55$0.55300
2009-11-10$0.55$0.552,400
2009-11-09$0.60$0.606,000
2009-11-06$0.60$0.608,000
2009-11-05$0.50$0.500
2009-11-04$0.50$0.507,600
2009-11-03$0.41$0.4128,500
2009-11-02$0.45$0.450
2009-10-30$0.45$0.450
2009-10-29$0.45$0.450
2009-10-28$0.45$0.450
2009-10-27$0.45$0.4515,000
2009-10-26$0.45$0.45100
2009-10-23$0.50$0.504,200
2009-10-22$0.43$0.436,400
2009-10-21$0.37$0.370
2009-10-20$0.37$0.370
2009-10-19$0.37$0.370
2009-10-16$0.37$0.370
2009-10-15$0.37$0.370
2009-10-14$0.37$0.372,700
2009-10-13$0.45$0.4529,400
2009-10-12$0.38$0.381,300
2009-10-09$0.43$0.43700
2009-10-08$0.43$0.431,000
2009-10-07$0.31$0.312,000
2009-10-06$0.43$0.431,600
2009-10-05$0.40$0.4010,000
2009-10-02$0.41$0.417,500
2009-10-01$0.40$0.400
2009-09-30$0.40$0.4032,600
2009-09-29$0.37$0.3717,000
2009-09-28$0.30$0.306,500
2009-09-25$0.41$0.4125,000
2009-09-24$0.35$0.352,800
2009-09-23$0.36$0.3615,500
2009-09-22$0.32$0.328,600
2009-09-21$0.41$0.418,000
2009-09-18$0.30$0.30400
2009-09-17$0.31$0.3112,000
2009-09-16$0.43$0.430
2009-09-15$0.43$0.431,000
2009-09-14$0.43$0.4317,700
2009-09-11$0.30$0.3010,000
2009-09-10$0.45$0.450
2009-09-09$0.45$0.4510,100
2009-09-08$0.35$0.3510,000
2009-09-04$0.27$0.273,300
2009-09-03$0.35$0.359,100
2009-09-02$0.46$0.460
2009-09-01$0.46$0.4617,400
2009-08-31$0.43$0.435,400
2009-08-28$0.21$0.21900
2009-08-27$0.46$0.46500
2009-08-26$0.43$0.430
2009-08-25$0.43$0.430
2009-08-24$0.43$0.430
2009-08-21$0.43$0.436,100
2009-08-20$0.42$0.42900
2009-08-19$0.39$0.396,000
2009-08-18$0.42$0.420
2009-08-17$0.42$0.420
2009-08-14$0.42$0.4211,800
2009-08-13$0.35$0.3510,000
2009-08-12$0.30$0.3016,000
2009-08-11$0.33$0.339,000
2009-08-10$0.29$0.2919,200
2009-08-07$0.41$0.4147,700
2009-08-06$0.60$0.6010,100
2009-08-05$0.53$0.531,000
2009-08-04$0.50$0.500
2009-08-03$0.50$0.5013,800
2009-07-31$0.50$0.5041,200
2009-07-30$0.45$0.45900
2009-07-29$0.50$0.501,200
2009-07-28$0.37$0.37300
2009-07-27$0.37$0.370
2009-07-24$0.37$0.374,000
2009-07-23$0.38$0.3815,000
2009-07-22$0.43$0.438,800
2009-07-21$0.50$0.500
2009-07-20$0.50$0.5017,500
2009-07-17$0.50$0.501,000
2009-07-16$0.50$0.502,000
2009-07-15$0.60$0.607,700
2009-07-14$0.48$0.485,000
2009-07-13$0.45$0.455,400
2009-07-10$0.50$0.500
2009-07-09$0.50$0.502,000
2009-07-08$0.50$0.502,500
2009-07-07$0.50$0.505,800
2009-07-06$0.50$0.500
2009-07-02$0.50$0.5014,400
2009-07-01$0.33$0.335,000
2009-06-30$0.45$0.455,000
2009-06-29$0.45$0.451,400
2009-06-26$0.42$0.4243,700
2009-06-25$0.32$0.3212,200
2009-06-24$0.30$0.30500
2009-06-23$0.30$0.3020,000
2009-06-22$0.30$0.3025,000
2009-06-19$0.35$0.350
2009-06-18$0.35$0.355,000
2009-06-17$0.35$0.354,000
2009-06-16$0.25$0.2546,500
2009-06-15$0.35$0.3510,000
2009-06-12$0.35$0.350
2009-06-11$0.35$0.350
2009-06-10$0.35$0.35200
2009-06-09$0.40$0.400
2009-06-08$0.40$0.409,300
2009-06-05$0.35$0.35800
2009-06-04$0.45$0.452,900
2009-06-03$0.45$0.452,000
2009-06-02$0.45$0.45500
2009-06-01$0.45$0.450
2009-05-29$0.45$0.450
2009-05-28$0.45$0.450
2009-05-27$0.45$0.452,000
2009-05-26$0.45$0.451,000
2009-05-22$0.45$0.450
2009-05-21$0.45$0.450
2009-05-20$0.45$0.451,000
2009-05-19$0.45$0.450
2009-05-18$0.45$0.450
2009-05-15$0.45$0.450
2009-05-14$0.45$0.450
2009-05-13$0.45$0.450
2009-05-12$0.45$0.450
2009-05-11$0.45$0.450
2009-05-08$0.45$0.450
2009-05-07$0.45$0.455,100
2009-05-06$0.27$0.270
2009-05-05$0.27$0.274,000
2009-05-04$0.26$0.2613,600
2009-05-01$0.30$0.300
2009-04-30$0.30$0.300
2009-04-29$0.30$0.300
2009-04-28$0.30$0.300
2009-04-27$0.30$0.305,400
2009-04-24$0.50$0.500
2009-04-23$0.50$0.500
2009-04-22$0.50$0.500
2009-04-21$0.50$0.50300
2009-04-20$0.30$0.30600
2009-04-17$0.45$0.455,000
2009-04-16$0.35$0.350
2009-04-15$0.35$0.351,400
2009-04-14$0.45$0.451,000
2009-04-13$0.30$0.300
2009-04-09$0.30$0.305,000
2009-04-08$0.45$0.452,300
2009-04-07$0.45$0.450
2009-04-06$0.45$0.454,000
2009-04-03$0.35$0.350
2009-04-02$0.35$0.3519,900
2009-04-01$0.48$0.480
2009-03-31$0.48$0.480
2009-03-30$0.48$0.480
2009-03-27$0.48$0.480
2009-03-26$0.48$0.480
2009-03-25$0.48$0.480
2009-03-24$0.48$0.484,000
2009-03-23$0.50$0.500
2009-03-20$0.50$0.500
2009-03-19$0.50$0.500
2009-03-18$0.50$0.500
2009-03-17$0.50$0.500
2009-03-16$0.50$0.500
2009-03-13$0.50$0.5014,700
2009-03-12$0.50$0.504,000
2009-03-11$0.50$0.500
2009-03-10$0.50$0.505,000
2009-03-09$0.40$0.400
2009-03-06$0.40$0.400
2009-03-05$0.40$0.4020,400
2009-03-04$0.30$0.302,500
2009-03-03$0.25$0.250
2009-03-02$0.25$0.251,600
2009-02-27$0.28$0.280
2009-02-26$0.28$0.280
2009-02-25$0.28$0.280
2009-02-24$0.28$0.280
2009-02-23$0.28$0.281,000
2009-02-20$0.28$0.280
2009-02-19$0.28$0.282,000
2009-02-18$0.28$0.28200
2009-02-17$0.28$0.28300
2009-02-13$0.42$0.424,300
2009-02-12$0.40$0.405,000
2009-02-11$0.40$0.400
2009-02-10$0.40$0.400
2009-02-09$0.40$0.400
2009-02-06$0.40$0.400
2009-02-05$0.40$0.400
2009-02-04$0.40$0.400
2009-02-03$0.40$0.40200
2009-02-02$0.38$0.380
2009-01-30$0.38$0.380
2009-01-29$0.38$0.380
2009-01-28$0.38$0.380
2009-01-27$0.38$0.380
2009-01-26$0.38$0.380
2009-01-23$0.38$0.38500
2009-01-22$0.38$0.380
2009-01-21$0.38$0.38700
2009-01-20$0.38$0.380
2009-01-16$0.38$0.38500
2009-01-15$0.65$0.650
2009-01-14$0.65$0.65500
2009-01-13$0.41$0.415,000
2009-01-12$0.41$0.41800
2009-01-09$0.60$0.600
2009-01-08$0.60$0.600
2009-01-07$0.60$0.60500
2009-01-06$0.59$0.593,000
2009-01-05$0.79$0.792,000
2009-01-02$0.89$0.89100