OTC:CYAN | Historical Stock Price | CYANOTECH CORP

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
1991-05-21 to 2026-08-27
Data captured

Stock Price Chart

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

$0.23$0.69$2.06$6.21$18.69$56.241991-05-212026-08-27

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

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Historical Stock Price — 2012

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2012-12-31$4.63$4.6312,300
2012-12-28$4.76$4.766,300
2012-12-27$4.77$4.779,400
2012-12-26$4.77$4.775,800
2012-12-24$4.81$4.811,400
2012-12-21$4.80$4.80500
2012-12-20$4.82$4.825,800
2012-12-19$4.95$4.9510,700
2012-12-18$4.95$4.9510,000
2012-12-17$4.96$4.968,000
2012-12-14$4.86$4.862,000
2012-12-13$4.82$4.8215,100
2012-12-12$4.99$4.9916,700
2012-12-11$5.20$5.205,100
2012-12-10$5.08$5.0814,700
2012-12-07$5.23$5.2345,700
2012-12-06$4.60$4.6041,400
2012-12-05$4.82$4.8240,000
2012-12-04$5.28$5.28300
2012-12-03$5.30$5.3016,700
2012-11-30$5.23$5.2316,600
2012-11-29$5.35$5.3514,100
2012-11-28$5.27$5.2728,200
2012-11-27$5.26$5.266,400
2012-11-26$5.20$5.209,500
2012-11-23$5.30$5.3012,600
2012-11-21$5.20$5.2016,100
2012-11-20$5.22$5.229,500
2012-11-19$5.26$5.2612,500
2012-11-16$5.36$5.3617,400
2012-11-15$5.55$5.5519,300
2012-11-14$5.59$5.5927,600
2012-11-13$5.84$5.846,000
2012-11-12$5.83$5.837,900
2012-11-09$5.81$5.8119,000
2012-11-08$6.15$6.1520,800
2012-11-07$6.08$6.0821,400
2012-11-06$5.99$5.994,700
2012-11-05$6.00$6.004,900
2012-11-02$6.00$6.003,500
2012-11-01$6.02$6.024,300
2012-10-31$6.00$6.0013,300
2012-10-26$6.01$6.012,900
2012-10-25$6.00$6.002,800
2012-10-24$5.95$5.952,600
2012-10-23$5.97$5.9711,600
2012-10-22$6.18$6.1813,700
2012-10-19$6.09$6.095,600
2012-10-18$6.10$6.102,800
2012-10-17$6.15$6.155,000
2012-10-16$6.09$6.096,000
2012-10-15$6.15$6.157,700
2012-10-12$6.00$6.002,300
2012-10-11$6.10$6.102,400
2012-10-10$6.15$6.1510,400
2012-10-09$6.19$6.198,000
2012-10-08$6.08$6.085,700
2012-10-05$5.85$5.8517,100
2012-10-04$5.96$5.961,600
2012-10-03$5.87$5.876,500
2012-10-02$5.87$5.8715,500
2012-10-01$6.16$6.1610,800
2012-09-28$5.90$5.901,700
2012-09-27$5.88$5.885,500
2012-09-26$5.81$5.815,100
2012-09-25$5.79$5.799,800
2012-09-24$5.80$5.806,800
2012-09-21$5.91$5.9126,500
2012-09-20$5.98$5.9824,900
2012-09-19$6.04$6.046,100
2012-09-18$6.00$6.008,200
2012-09-17$6.01$6.018,600
2012-09-14$5.84$5.8421,900
2012-09-13$6.00$6.0017,600
2012-09-12$5.86$5.8613,400
2012-09-11$5.79$5.7927,600
2012-09-10$5.93$5.9311,400
2012-09-07$6.27$6.277,700
2012-09-06$6.26$6.2630,000
2012-09-05$6.49$6.4923,900
2012-09-04$6.01$6.0133,200
2012-08-31$5.79$5.793,300
2012-08-30$5.76$5.765,200
2012-08-29$5.78$5.782,800
2012-08-28$5.75$5.754,800
2012-08-27$5.73$5.735,600
2012-08-24$5.90$5.908,200
2012-08-23$5.81$5.8113,000
2012-08-22$5.85$5.853,700
2012-08-21$5.90$5.909,600
2012-08-20$5.74$5.7436,800
2012-08-17$5.74$5.7415,200
2012-08-16$5.61$5.6124,600
2012-08-15$5.60$5.608,600
2012-08-14$5.61$5.6117,100
2012-08-13$5.70$5.7016,200
2012-08-10$5.61$5.6171,800
2012-08-09$6.15$6.157,700
2012-08-08$6.21$6.215,500
2012-08-07$6.03$6.0317,800
2012-08-06$6.25$6.2524,600
2012-08-03$6.43$6.4327,600
2012-08-02$6.18$6.1836,000
2012-08-01$6.65$6.653,500
2012-07-31$6.80$6.8010,500
2012-07-30$6.75$6.755,100
2012-07-27$6.67$6.6710,700
2012-07-26$6.60$6.608,500
2012-07-25$6.68$6.6816,600
2012-07-24$6.47$6.4721,200
2012-07-23$6.22$6.2214,400
2012-07-20$6.13$6.1336,100
2012-07-19$5.84$5.8445,400
2012-07-18$5.44$5.44135,900
2012-07-17$6.13$6.13155,400
2012-07-16$6.45$6.4528,800
2012-07-13$6.63$6.6325,900
2012-07-12$6.63$6.6325,100
2012-07-11$6.96$6.9611,300
2012-07-10$6.65$6.6512,500
2012-07-09$6.58$6.5836,500
2012-07-06$6.80$6.8020,000
2012-07-05$6.88$6.8816,400
2012-07-03$7.08$7.0816,700
2012-07-02$7.24$7.2438,100
2012-06-29$6.92$6.9232,200
2012-06-28$6.75$6.7513,100
2012-06-27$6.71$6.7123,800
2012-06-26$6.60$6.6028,900
2012-06-25$6.57$6.5716,000
2012-06-22$6.97$6.9793,700
2012-06-21$7.21$7.21121,000
2012-06-20$7.20$7.2055,600
2012-06-19$7.45$7.4519,700
2012-06-18$7.38$7.3831,300
2012-06-15$7.29$7.2919,700
2012-06-14$7.18$7.1822,400
2012-06-13$7.17$7.1738,100
2012-06-12$7.45$7.459,800
2012-06-11$7.46$7.4619,900
2012-06-08$7.38$7.3817,400
2012-06-07$7.40$7.4027,700
2012-06-06$7.69$7.6965,000
2012-06-05$6.97$6.9732,900
2012-06-04$6.90$6.9035,500
2012-06-01$6.97$6.9739,500
2012-05-31$7.46$7.4617,100
2012-05-30$7.55$7.5513,500
2012-05-29$7.56$7.5618,300
2012-05-25$7.60$7.6028,700
2012-05-24$7.75$7.7534,600
2012-05-23$7.67$7.6730,000
2012-05-22$7.59$7.5947,000
2012-05-21$7.56$7.5661,600
2012-05-18$8.08$8.0855,500
2012-05-17$7.93$7.9395,100
2012-05-16$9.02$9.0249,900
2012-05-15$9.63$9.6338,000
2012-05-14$10.28$10.2812,300
2012-05-11$10.31$10.3116,700
2012-05-10$10.18$10.1825,000
2012-05-09$10.23$10.2331,200
2012-05-08$10.50$10.5019,800
2012-05-07$10.63$10.6329,000
2012-05-04$10.26$10.2632,800
2012-05-03$10.39$10.3938,000
2012-05-02$10.55$10.5530,100
2012-05-01$10.89$10.8988,000
2012-04-30$10.28$10.2844,000
2012-04-27$9.92$9.9247,900
2012-04-26$9.39$9.3934,500
2012-04-25$8.78$8.7837,500
2012-04-24$8.84$8.8426,800
2012-04-23$8.84$8.8443,100
2012-04-20$8.99$8.9962,400
2012-04-19$9.34$9.3456,200
2012-04-18$8.88$8.8880,400
2012-04-17$9.51$9.5131,300
2012-04-16$9.25$9.2521,100
2012-04-13$9.55$9.5518,500
2012-04-12$9.76$9.7649,000
2012-04-11$10.17$10.1774,600
2012-04-10$9.12$9.1234,700
2012-04-09$9.29$9.2927,900
2012-04-05$9.67$9.6757,500
2012-04-04$8.92$8.9245,100
2012-04-03$9.25$9.2529,900
2012-04-02$9.53$9.5353,400
2012-03-30$10.13$10.1364,400
2012-03-29$9.20$9.2052,800
2012-03-28$9.44$9.4428,000
2012-03-27$9.63$9.63112,800
2012-03-26$10.18$10.1845,300
2012-03-23$10.33$10.3349,100
2012-03-22$10.58$10.5851,900
2012-03-21$10.74$10.7439,500
2012-03-20$10.84$10.8426,900
2012-03-19$10.74$10.7473,000
2012-03-16$10.12$10.1274,200
2012-03-15$10.89$10.8971,000
2012-03-14$11.31$11.3181,000
2012-03-13$11.35$11.35353,100
2012-03-12$11.14$11.14140,000
2012-03-09$10.02$10.02125,900
2012-03-08$9.85$9.85188,200
2012-03-07$8.95$8.9551,600
2012-03-06$8.77$8.7746,000
2012-03-05$9.01$9.01142,300
2012-03-02$7.85$7.8536,000
2012-03-01$8.13$8.1325,300
2012-02-29$8.11$8.1119,700
2012-02-28$8.47$8.4723,700
2012-02-27$8.37$8.3740,500
2012-02-24$8.12$8.1236,500
2012-02-23$7.95$7.9538,500
2012-02-22$7.70$7.7028,000
2012-02-21$7.72$7.7283,500
2012-02-17$8.18$8.1884,000
2012-02-16$8.20$8.2078,200
2012-02-15$7.74$7.74119,500
2012-02-14$8.06$8.06165,800
2012-02-13$8.64$8.64209,100
2012-02-10$8.69$8.69142,800
2012-02-09$9.07$9.07559,600
2012-02-08$6.51$6.5112,600
2012-02-07$6.31$6.3129,500
2012-02-06$6.60$6.6031,700
2012-02-03$6.62$6.6222,800
2012-02-02$6.59$6.5925,500
2012-02-01$6.50$6.5017,800
2012-01-31$6.55$6.5521,600
2012-01-30$6.51$6.5145,800
2012-01-27$6.49$6.4925,500
2012-01-26$6.42$6.4219,100
2012-01-25$6.10$6.1024,700
2012-01-24$6.12$6.1217,100
2012-01-23$6.20$6.2040,500
2012-01-20$6.20$6.2064,400
2012-01-19$6.53$6.5318,800
2012-01-18$6.50$6.5018,400
2012-01-17$6.50$6.5042,700
2012-01-13$6.77$6.7731,400
2012-01-12$6.78$6.7885,400
2012-01-11$6.47$6.4721,200
2012-01-10$6.41$6.4175,200
2012-01-09$6.38$6.3839,900
2012-01-06$6.47$6.4742,600
2012-01-05$6.60$6.6062,100
2012-01-04$6.89$6.8982,200
2012-01-03$6.88$6.8895,000