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Cyanotech Corporation (CYAN)
OTCMKTS · Delayed Price · Currency is USD
0.470
+0.110 (30.56%)
At close: Dec 5, 2025

Cyanotech Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Dec 5, 20250.420.480.400.470.4730.56%49,878
Dec 4, 20250.360.360.360.360.36-37.28%217
Dec 2, 20250.340.570.340.570.5764.00%2,918
Dec 1, 20250.350.350.350.350.352.94%1,101
Nov 26, 20250.380.460.340.340.341.49%4,512
Nov 25, 20250.340.340.340.340.34-4,920
Nov 24, 20250.340.340.340.340.34-0.36%2,822
Nov 21, 20250.340.450.340.340.34-29.15%2,726
Nov 20, 20250.360.470.360.470.4718.62%270
Nov 19, 20250.390.400.340.400.40-7,575
Nov 18, 20250.320.400.320.400.40-708
Nov 14, 20250.320.400.320.400.4025.00%6,040
Nov 13, 20250.320.320.320.320.32-18.30%174
Nov 12, 20250.330.400.300.390.390.44%700
Nov 11, 20250.390.390.390.390.391.30%5,001
Nov 10, 20250.330.390.290.390.3927.74%44,637
Nov 4, 20250.290.300.290.300.30-5.22%400
Oct 30, 20250.320.320.320.320.322.58%686
Oct 29, 20250.320.320.310.310.31-0.19%14,690
Oct 28, 20250.250.310.250.310.31-2.33%455
Oct 27, 20250.250.320.250.320.3213.57%6,996
Oct 24, 20250.330.330.260.280.28-15.15%9,352
Oct 23, 20250.290.330.290.330.33-2.94%820
Oct 21, 20250.340.340.340.340.3417.24%518
Oct 16, 20250.290.290.290.290.29-13.43%1,005
Oct 15, 20250.270.340.270.340.3415.52%310
Oct 14, 20250.270.340.270.290.29-12.12%5,380
Oct 10, 20250.330.330.330.330.33-500
Oct 9, 20250.330.330.330.330.33-2.94%700
Oct 7, 20250.340.340.340.340.343.03%160
Oct 6, 20250.330.340.330.330.33-7,801
Oct 3, 20250.330.330.330.330.33-3.57%1,705
Oct 2, 20250.350.350.290.340.3415.69%850
Oct 1, 20250.300.300.300.300.30-1.92%101
Sep 30, 20250.350.350.300.300.30-13.33%392
Sep 29, 20250.350.350.350.350.35-0.57%181
Sep 26, 20250.330.350.330.350.3516.67%8,025
Sep 25, 20250.300.300.300.300.300.87%251
Sep 24, 20250.270.330.270.300.302.55%2,417
Sep 23, 20250.290.300.290.290.291.05%8,900
Sep 22, 20250.270.290.270.290.29-3.37%1,977
Sep 18, 20250.270.330.270.300.3010.00%29,362
Sep 16, 20250.280.280.240.270.27-1.82%72,125
Sep 15, 20250.280.280.280.280.28-5.98%1,000
Sep 12, 20250.290.290.270.290.29-2.50%3,426
Sep 11, 20250.300.300.290.300.30-3,841
Sep 10, 20250.260.300.260.300.3015.38%3,500
Sep 9, 20250.250.270.250.260.26-13.33%40,010
Sep 5, 20250.280.300.250.300.303.45%4,800
Sep 4, 20250.280.290.280.290.293.57%356
Sep 3, 20250.280.280.280.280.28-100
Sep 2, 20250.280.280.280.280.28-17.65%600
Aug 29, 20250.340.340.340.340.3421.34%150
Aug 28, 20250.320.320.280.280.28-3.38%2,150
Aug 25, 20250.280.290.280.290.29-8.23%692
Aug 22, 20250.290.320.290.320.325.33%1,100
Aug 19, 20250.270.330.270.300.30-12.28%10,173
Aug 18, 20250.300.340.300.340.3413.25%6,000
Aug 14, 20250.300.300.300.300.30-101
Aug 13, 20250.300.300.300.300.30-15.64%208
Aug 12, 20250.250.360.250.360.36-14.76%1,455
Aug 11, 20250.360.420.300.420.42-3,404
Aug 8, 20250.210.420.210.420.4227.27%48,402
Aug 7, 20250.350.360.330.330.33-15.38%22,750
Aug 6, 20250.380.390.360.390.395.41%15,759
Aug 4, 20250.370.400.370.370.37-7,444
Aug 1, 20250.390.390.370.370.37-1,500
Jul 31, 20250.380.380.370.370.37-3.90%1,198
Jul 30, 20250.390.390.390.390.39-4.94%182
Jul 29, 20250.370.410.370.410.416.58%2,025
Jul 28, 20250.380.380.380.380.38-3.77%3,052
Jul 25, 20250.380.420.380.390.39-8.08%3,700
Jul 24, 20250.430.430.380.430.432.29%1,300
Jul 23, 20250.390.420.380.420.420.02%2,399
Jul 22, 20250.390.420.390.420.427.67%784
Jul 21, 20250.420.420.390.390.39-7.12%3,321
Jul 18, 20250.390.420.390.420.420.07%2,476
Jul 16, 20250.390.420.390.420.42-0.07%16,286
Jul 15, 20250.400.420.390.420.420.21%4,914
Jul 14, 20250.380.420.380.420.42-8.91%5,289
Jul 11, 20250.370.460.370.460.46-3,680
Jul 10, 20250.370.460.370.460.460.59%3,987
Jul 9, 20250.410.460.370.460.4613.76%23,291
Jul 8, 20250.420.420.360.400.40-2.07%620
Jul 7, 20250.410.410.410.410.4114.03%200
Jul 3, 20250.360.360.360.360.36-10.00%5,000
Jul 2, 20250.400.400.340.400.40-4,200
Jul 1, 20250.330.400.330.400.4019.76%13,200
Jun 30, 20250.420.420.330.330.33-16.50%11,950
Jun 27, 20250.400.400.400.400.4013.64%1,000
Jun 23, 20250.350.350.350.350.35-115
Jun 20, 20250.360.360.350.350.35-2.06%760
Jun 17, 20250.420.420.360.360.36-7.85%22,786
Jun 16, 20250.390.390.390.390.39-1,333
Jun 13, 20250.390.390.390.390.39-5.11%273
Jun 12, 20250.410.410.410.410.41-2.14%296
Jun 11, 20250.410.420.400.420.424.50%25,228
Jun 10, 20250.400.400.400.400.40-4.29%1,000
Jun 9, 20250.370.420.350.420.424.97%44,586
Jun 6, 20250.400.400.400.400.40-1.23%329