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 — 2022

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2022-12-30$1.10$1.1054,500
2022-12-29$1.22$1.22332,800
2022-12-28$0.95$0.9550,500
2022-12-27$0.93$0.9312,200
2022-12-23$0.92$0.9222,000
2022-12-22$0.94$0.947,900
2022-12-21$0.94$0.949,800
2022-12-20$1.00$1.0013,300
2022-12-19$1.01$1.0122,200
2022-12-16$1.04$1.0421,900
2022-12-15$0.99$0.9947,300
2022-12-14$0.94$0.9458,700
2022-12-13$1.06$1.067,200
2022-12-12$1.04$1.045,200
2022-12-09$1.06$1.0618,600
2022-12-08$1.09$1.0918,900
2022-12-07$1.15$1.158,900
2022-12-06$1.23$1.232,800
2022-12-05$1.25$1.257,600
2022-12-02$1.28$1.2844,400
2022-12-01$1.31$1.3173,000
2022-11-30$1.24$1.248,500
2022-11-29$1.27$1.272,300
2022-11-28$1.33$1.337,000
2022-11-25$1.37$1.371,200
2022-11-23$1.35$1.3518,100
2022-11-22$1.26$1.2623,600
2022-11-21$1.20$1.207,000
2022-11-18$1.17$1.1712,800
2022-11-17$1.17$1.1736,200
2022-11-16$1.25$1.2521,300
2022-11-15$1.30$1.3023,500
2022-11-14$1.31$1.3117,400
2022-11-11$1.33$1.3359,900
2022-11-10$1.48$1.4825,700
2022-11-09$1.53$1.5334,700
2022-11-08$1.91$1.915,400
2022-11-07$1.91$1.911,300
2022-11-04$1.91$1.912,100
2022-11-03$1.97$1.97400
2022-11-02$1.91$1.916,300
2022-11-01$1.97$1.97500
2022-10-31$1.97$1.972,700
2022-10-28$1.99$1.991,100
2022-10-27$2.04$2.041,500
2022-10-26$1.98$1.984,600
2022-10-25$2.03$2.036,000
2022-10-24$2.03$2.033,100
2022-10-21$2.05$2.053,800
2022-10-20$2.02$2.026,300
2022-10-19$2.05$2.053,200
2022-10-18$2.04$2.044,400
2022-10-17$2.07$2.077,100
2022-10-14$2.08$2.085,600
2022-10-13$2.11$2.1113,300
2022-10-12$2.12$2.123,200
2022-10-11$2.11$2.114,700
2022-10-10$2.20$2.203,800
2022-10-07$2.22$2.228,700
2022-10-06$2.32$2.327,200
2022-10-05$2.25$2.251,000
2022-10-04$2.29$2.295,600
2022-10-03$2.24$2.243,900
2022-09-30$2.16$2.1616,400
2022-09-29$2.20$2.203,800
2022-09-28$2.18$2.189,400
2022-09-27$1.97$1.972,100
2022-09-26$2.00$2.006,600
2022-09-23$1.99$1.9924,200
2022-09-22$1.98$1.9818,000
2022-09-21$2.14$2.145,000
2022-09-20$2.17$2.176,300
2022-09-19$2.17$2.1720,900
2022-09-16$2.21$2.214,700
2022-09-15$2.15$2.155,200
2022-09-14$2.18$2.1817,000
2022-09-13$2.18$2.181,700
2022-09-12$2.21$2.215,700
2022-09-09$2.23$2.2315,000
2022-09-08$2.15$2.154,800
2022-09-07$2.15$2.158,600
2022-09-06$2.25$2.2511,800
2022-09-02$2.29$2.295,200
2022-09-01$2.30$2.305,600
2022-08-31$2.38$2.3810,200
2022-08-30$2.45$2.459,900
2022-08-29$2.52$2.524,800
2022-08-26$2.51$2.514,500
2022-08-25$2.56$2.561,600
2022-08-24$2.56$2.563,400
2022-08-23$2.59$2.5911,400
2022-08-22$2.64$2.645,600
2022-08-19$2.68$2.684,600
2022-08-18$2.65$2.656,000
2022-08-17$2.70$2.7014,000
2022-08-16$2.68$2.6822,700
2022-08-15$2.75$2.7518,900
2022-08-12$2.70$2.7014,700
2022-08-11$2.72$2.7241,400
2022-08-10$2.80$2.8098,800
2022-08-09$3.30$3.3018,400
2022-08-08$3.02$3.0210,900
2022-08-05$3.03$3.032,400
2022-08-04$3.06$3.065,400
2022-08-03$3.04$3.0418,900
2022-08-02$3.12$3.1218,200
2022-08-01$3.15$3.1530,900
2022-07-29$3.13$3.1313,400
2022-07-28$3.01$3.0127,700
2022-07-27$2.83$2.8334,900
2022-07-26$2.73$2.7312,600
2022-07-25$2.81$2.8116,400
2022-07-22$2.75$2.7529,300
2022-07-21$2.90$2.9011,500
2022-07-20$2.93$2.9319,600
2022-07-19$2.96$2.968,500
2022-07-18$3.00$3.002,100
2022-07-15$3.09$3.0910,100
2022-07-14$3.01$3.012,600
2022-07-13$3.02$3.0211,700
2022-07-12$3.18$3.1817,500
2022-07-11$3.23$3.2315,500
2022-07-08$3.02$3.0212,700
2022-07-07$2.90$2.9011,000
2022-07-06$2.80$2.804,300
2022-07-05$2.81$2.816,600
2022-07-01$3.00$3.004,300
2022-06-30$2.92$2.9214,700
2022-06-29$3.00$3.0019,300
2022-06-28$3.11$3.116,300
2022-06-27$3.18$3.1859,000
2022-06-24$3.22$3.2217,500
2022-06-23$3.27$3.2772,300
2022-06-22$3.43$3.437,900
2022-06-21$3.43$3.4317,000
2022-06-17$3.30$3.3028,400
2022-06-16$3.05$3.0545,800
2022-06-15$3.03$3.0321,800
2022-06-14$3.11$3.116,800
2022-06-13$2.93$2.9310,700
2022-06-10$3.12$3.124,600
2022-06-09$3.28$3.283,700
2022-06-08$3.30$3.3011,900
2022-06-07$3.32$3.3278,800
2022-06-06$3.15$3.1523,300
2022-06-03$3.20$3.2014,000
2022-06-02$3.15$3.1560,800
2022-06-01$3.00$3.005,700
2022-05-31$2.99$2.999,900
2022-05-27$2.92$2.924,400
2022-05-26$3.00$3.004,000
2022-05-25$2.90$2.908,400
2022-05-24$2.79$2.795,600
2022-05-23$2.87$2.871,100
2022-05-20$2.79$2.795,100
2022-05-19$2.88$2.882,400
2022-05-18$2.83$2.832,400
2022-05-17$2.84$2.845,000
2022-05-16$2.91$2.913,500
2022-05-13$3.04$3.0420,900
2022-05-12$2.76$2.768,500
2022-05-11$2.68$2.6820,900
2022-05-10$2.75$2.758,300
2022-05-09$2.82$2.828,800
2022-05-06$2.85$2.8511,200
2022-05-05$2.90$2.907,900
2022-05-04$2.99$2.997,300
2022-05-03$2.89$2.892,900
2022-05-02$2.92$2.922,200
2022-04-29$2.88$2.882,700
2022-04-28$2.99$2.996,500
2022-04-27$2.91$2.912,500
2022-04-26$2.90$2.904,100
2022-04-25$2.91$2.9114,600
2022-04-22$2.93$2.9310,100
2022-04-21$2.92$2.9215,300
2022-04-20$3.06$3.066,300
2022-04-19$3.05$3.053,700
2022-04-18$3.18$3.1814,200
2022-04-14$3.10$3.103,100
2022-04-13$3.14$3.1414,800
2022-04-12$3.03$3.034,600
2022-04-11$3.05$3.0530,500
2022-04-08$3.02$3.0216,100
2022-04-07$3.06$3.0618,300
2022-04-06$3.03$3.0315,100
2022-04-05$3.15$3.1512,300
2022-04-04$3.23$3.2319,700
2022-04-01$3.34$3.3411,100
2022-03-31$3.37$3.377,500
2022-03-30$3.40$3.4023,600
2022-03-29$3.37$3.3749,600
2022-03-28$3.30$3.3018,000
2022-03-25$3.40$3.409,300
2022-03-24$3.46$3.4668,400
2022-03-23$3.38$3.3835,700
2022-03-22$3.33$3.3331,000
2022-03-21$3.27$3.2782,400
2022-03-18$3.16$3.1616,900
2022-03-17$3.18$3.1899,400
2022-03-16$3.12$3.128,800
2022-03-15$3.08$3.0819,000
2022-03-14$3.15$3.15167,100
2022-03-11$3.05$3.0510,000
2022-03-10$3.00$3.0030,100
2022-03-09$2.97$2.975,400
2022-03-08$2.88$2.8818,800
2022-03-07$2.85$2.8514,600
2022-03-04$3.02$3.0225,500
2022-03-03$2.97$2.97105,100
2022-03-02$2.81$2.819,000
2022-03-01$2.75$2.7522,400
2022-02-28$2.73$2.7329,900
2022-02-25$2.65$2.6522,700
2022-02-24$2.64$2.6411,100
2022-02-23$2.69$2.6925,400
2022-02-22$2.74$2.7411,900
2022-02-18$2.79$2.7910,400
2022-02-17$2.85$2.8522,800
2022-02-16$2.91$2.9162,800
2022-02-15$2.86$2.8691,300
2022-02-14$2.65$2.6551,500
2022-02-11$2.66$2.66106,400
2022-02-10$2.69$2.69163,400
2022-02-09$2.89$2.8915,100
2022-02-08$2.87$2.8716,300
2022-02-07$2.89$2.898,500
2022-02-04$2.83$2.839,900
2022-02-03$2.90$2.901,500
2022-02-02$2.86$2.862,400
2022-02-01$2.87$2.8731,500
2022-01-31$2.82$2.8221,200
2022-01-28$2.81$2.818,800
2022-01-27$2.85$2.858,200
2022-01-26$2.84$2.8420,000
2022-01-25$2.79$2.7930,800
2022-01-24$2.78$2.7825,900
2022-01-21$2.84$2.84194,400
2022-01-20$2.87$2.8732,700
2022-01-19$2.93$2.9313,700
2022-01-18$2.98$2.9812,400
2022-01-14$3.01$3.0112,200
2022-01-13$2.99$2.9930,800
2022-01-12$2.92$2.9283,600
2022-01-11$2.86$2.8690,900
2022-01-10$2.90$2.9086,300
2022-01-07$2.99$2.9943,800
2022-01-06$3.06$3.0635,600
2022-01-05$3.14$3.1431,200
2022-01-04$3.18$3.1841,900
2022-01-03$3.24$3.2466,600