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 — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2018-12-31$0.24$0.2457,600
2018-12-28$0.24$0.24282,000
2018-12-27$0.26$0.2668,100
2018-12-26$0.23$0.235,200
2018-12-24$0.24$0.2414,600
2018-12-21$0.22$0.224,700
2018-12-20$0.23$0.2342,000
2018-12-19$0.24$0.2447,100
2018-12-18$0.22$0.2269,000
2018-12-17$0.18$0.1880,300
2018-12-14$0.21$0.2128,800
2018-12-13$0.24$0.2453,300
2018-12-12$0.26$0.2625,000
2018-12-11$0.27$0.27114,700
2018-12-10$0.23$0.2325,800
2018-12-07$0.23$0.2310,400
2018-12-06$0.24$0.249,500
2018-12-04$0.26$0.26112,300
2018-12-03$0.23$0.2356,500
2018-11-30$0.22$0.221,400
2018-11-29$0.21$0.2110,000
2018-11-28$0.23$0.2333,300
2018-11-27$0.21$0.2117,000
2018-11-26$0.21$0.2123,000
2018-11-23$0.21$0.2128,200
2018-11-21$0.23$0.2314,200
2018-11-20$0.21$0.2119,800
2018-11-19$0.22$0.2226,900
2018-11-16$0.21$0.2132,600
2018-11-15$0.21$0.2173,800
2018-11-14$0.23$0.2330,000
2018-11-13$0.21$0.2171,400
2018-11-12$0.23$0.2322,500
2018-11-09$0.24$0.2433,500
2018-11-08$0.22$0.2251,000
2018-11-07$0.23$0.2349,900
2018-11-06$0.23$0.2349,100
2018-11-05$0.23$0.2335,200
2018-11-02$0.22$0.2223,300
2018-11-01$0.24$0.24204,600
2018-10-31$0.23$0.2343,500
2018-10-30$0.24$0.2483,000
2018-10-29$0.24$0.2440,100
2018-10-26$0.23$0.2333,400
2018-10-25$0.24$0.2414,500
2018-10-24$0.24$0.2434,000
2018-10-23$0.24$0.24368,800
2018-10-22$0.25$0.2537,900
2018-10-19$0.25$0.254,500
2018-10-18$0.26$0.2649,100
2018-10-17$0.27$0.27135,500
2018-10-16$0.25$0.2516,100
2018-10-15$0.26$0.266,300
2018-10-12$0.28$0.2816,000
2018-10-11$0.25$0.2539,500
2018-10-10$0.26$0.2618,900
2018-10-09$0.28$0.2828,100
2018-10-08$0.29$0.29219,300
2018-10-05$0.30$0.30256,800
2018-10-04$0.29$0.2983,500
2018-10-03$0.28$0.28127,400
2018-10-02$0.29$0.29158,100
2018-10-01$0.27$0.2749,000
2018-09-28$0.27$0.27132,300
2018-09-27$0.27$0.2756,600
2018-09-26$0.27$0.2796,700
2018-09-25$0.26$0.26212,300
2018-09-24$0.23$0.2349,700
2018-09-21$0.22$0.2295,700
2018-09-20$0.24$0.2478,000
2018-09-19$0.24$0.2497,500
2018-09-18$0.23$0.2334,100
2018-09-17$0.25$0.2552,200
2018-09-14$0.26$0.2671,000
2018-09-13$0.26$0.26105,000
2018-09-12$0.27$0.27109,000
2018-09-11$0.26$0.2661,800
2018-09-10$0.27$0.2792,300
2018-09-07$0.26$0.2664,800
2018-09-06$0.25$0.2596,700
2018-09-05$0.25$0.2547,600
2018-09-04$0.26$0.2646,600
2018-08-31$0.25$0.25161,600
2018-08-30$0.27$0.27131,600
2018-08-29$0.26$0.2682,200
2018-08-28$0.28$0.2863,900
2018-08-27$0.26$0.26107,800
2018-08-24$0.26$0.2689,300
2018-08-23$0.27$0.27170,400
2018-08-22$0.26$0.2655,700
2018-08-21$0.26$0.26122,000
2018-08-20$0.28$0.28101,600
2018-08-17$0.27$0.2773,000
2018-08-16$0.26$0.26126,800
2018-08-15$0.25$0.25206,700
2018-08-14$0.28$0.28189,700
2018-08-13$0.28$0.28123,900
2018-08-10$0.30$0.3019,500
2018-08-09$0.30$0.3049,900
2018-08-08$0.30$0.3063,200
2018-08-07$0.30$0.3032,800
2018-08-06$0.29$0.2982,600
2018-08-03$0.31$0.3171,800
2018-08-02$0.31$0.3187,000
2018-08-01$0.32$0.3256,100
2018-07-31$0.31$0.31122,900
2018-07-30$0.31$0.3187,700
2018-07-27$0.33$0.33158,900
2018-07-26$0.35$0.35263,900
2018-07-25$0.30$0.30116,600
2018-07-24$0.33$0.3381,400
2018-07-23$0.33$0.3360,100
2018-07-20$0.34$0.34133,900
2018-07-19$0.32$0.32125,200
2018-07-18$0.33$0.33176,400
2018-07-17$0.30$0.30117,500
2018-07-16$0.31$0.31113,200
2018-07-13$0.33$0.33101,300
2018-07-12$0.32$0.32172,000
2018-07-11$0.32$0.32198,700
2018-07-10$0.33$0.33123,000
2018-07-09$0.32$0.3286,800
2018-07-06$0.36$0.36325,500
2018-07-05$0.40$0.40125,700
2018-07-03$0.42$0.4217,900
2018-07-02$0.45$0.45112,400
2018-06-29$0.43$0.4351,800
2018-06-28$0.42$0.4280,900
2018-06-27$0.43$0.4362,300
2018-06-26$0.45$0.45183,700
2018-06-25$0.43$0.4350,100
2018-06-22$0.41$0.4152,600
2018-06-21$0.42$0.4236,600
2018-06-20$0.42$0.4291,800
2018-06-19$0.42$0.4270,500
2018-06-18$0.41$0.41149,000
2018-06-15$0.41$0.41201,300
2018-06-14$0.43$0.43282,900
2018-06-13$0.45$0.45457,600
2018-06-12$0.41$0.41220,200
2018-06-11$0.38$0.38294,700
2018-06-08$0.40$0.40305,400
2018-06-07$0.38$0.38241,700
2018-06-06$0.38$0.38133,500
2018-06-05$0.40$0.40402,300
2018-06-04$0.44$0.44810,900
2018-06-01$0.36$0.36162,500
2018-05-31$0.31$0.3196,000
2018-05-30$0.29$0.29138,200
2018-05-29$0.27$0.2747,200
2018-05-25$0.26$0.2640,400
2018-05-24$0.25$0.2534,700
2018-05-23$0.25$0.2591,800
2018-05-22$0.27$0.2720,700
2018-05-21$0.27$0.2747,300
2018-05-18$0.27$0.2718,500
2018-05-17$0.26$0.2619,500
2018-05-16$0.25$0.2518,900
2018-05-15$0.24$0.2426,400
2018-05-14$0.23$0.2365,900
2018-05-11$0.23$0.2334,500
2018-05-10$0.24$0.2437,400
2018-05-09$0.24$0.2414,700
2018-05-08$0.24$0.249,000
2018-05-07$0.24$0.2437,700
2018-05-04$0.23$0.2317,300
2018-05-03$0.23$0.2335,300
2018-05-02$0.23$0.2346,300
2018-05-01$0.23$0.2320,900
2018-04-30$0.23$0.2344,100
2018-04-27$0.23$0.237,400
2018-04-26$0.24$0.2429,300
2018-04-25$0.23$0.2322,700
2018-04-24$0.24$0.2416,500
2018-04-23$0.24$0.247,800
2018-04-20$0.24$0.2437,300
2018-04-19$0.24$0.2428,300
2018-04-18$0.24$0.2430,600
2018-04-17$0.25$0.25105,400
2018-04-16$0.25$0.2587,100
2018-04-13$0.26$0.2629,000
2018-04-12$0.25$0.256,600
2018-04-11$0.26$0.2624,800
2018-04-10$0.23$0.2386,900
2018-04-09$0.26$0.2616,800
2018-04-06$0.26$0.2649,400
2018-04-05$0.26$0.2624,300
2018-04-04$0.26$0.2616,100
2018-04-03$0.24$0.2431,100
2018-04-02$0.26$0.2677,400
2018-03-29$0.26$0.2622,100
2018-03-28$0.26$0.2663,900
2018-03-27$0.21$0.21223,700
2018-03-26$0.24$0.2454,200
2018-03-23$0.24$0.24160,900
2018-03-22$0.23$0.23194,100
2018-03-21$0.25$0.2547,800
2018-03-20$0.25$0.2535,600
2018-03-19$0.25$0.25124,300
2018-03-16$0.26$0.26246,300
2018-03-15$0.25$0.2577,200
2018-03-14$0.27$0.2787,500
2018-03-13$0.27$0.27111,100
2018-03-12$0.26$0.26212,400
2018-03-09$0.28$0.2846,200
2018-03-08$0.28$0.2873,500
2018-03-07$0.26$0.2684,400
2018-03-06$0.26$0.2645,300
2018-03-05$0.28$0.2826,800
2018-03-02$0.28$0.2866,700
2018-03-01$0.28$0.2856,100
2018-02-28$0.28$0.2872,700
2018-02-27$0.29$0.29107,800
2018-02-26$0.29$0.29177,700
2018-02-23$0.26$0.2674,600
2018-02-22$0.25$0.2554,800
2018-02-21$0.25$0.2568,300
2018-02-20$0.27$0.2770,900
2018-02-16$0.27$0.2743,100
2018-02-15$0.27$0.27103,500
2018-02-14$0.29$0.2968,600
2018-02-13$0.27$0.2759,200
2018-02-12$0.28$0.2860,900
2018-02-09$0.29$0.2960,800
2018-02-08$0.31$0.31126,700
2018-02-07$0.32$0.3259,100
2018-02-06$0.30$0.3022,500
2018-02-05$0.32$0.3267,400
2018-02-02$0.30$0.3054,800
2018-02-01$0.28$0.28101,900
2018-01-31$0.28$0.2848,200
2018-01-30$0.30$0.30169,400
2018-01-29$0.33$0.3338,200
2018-01-26$0.32$0.32122,400
2018-01-25$0.35$0.35119,400
2018-01-24$0.32$0.32251,400
2018-01-23$0.34$0.3495,100
2018-01-22$0.35$0.35244,500
2018-01-19$0.37$0.3737,700
2018-01-18$0.39$0.3962,000
2018-01-17$0.37$0.3784,000
2018-01-16$0.39$0.3942,600
2018-01-12$0.41$0.4169,900
2018-01-11$0.38$0.3836,000
2018-01-10$0.40$0.4078,300
2018-01-09$0.40$0.40158,900
2018-01-08$0.38$0.38100,900
2018-01-05$0.38$0.3833,700
2018-01-04$0.41$0.41123,200
2018-01-03$0.38$0.38106,400
2018-01-02$0.41$0.4151,100