Cyanotech Corporation (CYAN)
OTCMKTS · Delayed Price · Currency is USD
0.2750
-0.0150 (-5.17%)
Sep 15, 2025, 12:39 PM EDT
Cyanotech Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Sep 12, 2025 | 0.29 | 0.29 | 0.27 | 0.29 | 0.29 | -2.50% | 3,426 |
| Sep 11, 2025 | 0.30 | 0.30 | 0.29 | 0.30 | 0.30 | - | 3,841 |
| Sep 10, 2025 | 0.26 | 0.30 | 0.26 | 0.30 | 0.30 | 15.38% | 3,500 |
| Sep 9, 2025 | 0.25 | 0.27 | 0.25 | 0.26 | 0.26 | -13.33% | 40,010 |
| Sep 8, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 137 |
| Sep 5, 2025 | 0.28 | 0.30 | 0.25 | 0.30 | 0.30 | 3.45% | 4,800 |
| Sep 4, 2025 | 0.28 | 0.29 | 0.28 | 0.29 | 0.29 | 3.57% | 356 |
| Sep 3, 2025 | 0.28 | 0.28 | 0.28 | 0.28 | 0.28 | - | 100 |
| Sep 2, 2025 | 0.28 | 0.28 | 0.28 | 0.28 | 0.28 | -17.65% | 600 |
| Aug 29, 2025 | 0.34 | 0.34 | 0.34 | 0.34 | 0.34 | 21.34% | 150 |
| Aug 28, 2025 | 0.32 | 0.32 | 0.28 | 0.28 | 0.28 | -3.38% | 2,150 |
| Aug 27, 2025 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | - | 2 |
| Aug 26, 2025 | 0.29 | 0.29 | 0.29 | 0.29 | 0.29 | - | 40 |
| Aug 25, 2025 | 0.28 | 0.29 | 0.28 | 0.29 | 0.29 | -8.23% | 692 |
| Aug 22, 2025 | 0.29 | 0.32 | 0.29 | 0.32 | 0.32 | 5.33% | 1,100 |
| Aug 21, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 30 |
| Aug 20, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 2 |
| Aug 19, 2025 | 0.27 | 0.33 | 0.27 | 0.30 | 0.30 | -12.28% | 10,173 |
| Aug 18, 2025 | 0.30 | 0.34 | 0.30 | 0.34 | 0.34 | 13.25% | 6,000 |
| Aug 15, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | - |
| Aug 14, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | - | 101 |
| Aug 13, 2025 | 0.30 | 0.30 | 0.30 | 0.30 | 0.30 | -15.64% | 208 |
| Aug 12, 2025 | 0.25 | 0.36 | 0.25 | 0.36 | 0.36 | -14.76% | 1,455 |
| Aug 11, 2025 | 0.36 | 0.42 | 0.30 | 0.42 | 0.42 | - | 3,404 |
| Aug 8, 2025 | 0.21 | 0.42 | 0.21 | 0.42 | 0.42 | 27.27% | 48,402 |
| Aug 7, 2025 | 0.35 | 0.36 | 0.33 | 0.33 | 0.33 | -15.38% | 22,750 |
| Aug 6, 2025 | 0.38 | 0.39 | 0.36 | 0.39 | 0.39 | 5.41% | 15,759 |
| Aug 5, 2025 | 0.37 | 0.37 | 0.37 | 0.37 | 0.37 | - | - |
| Aug 4, 2025 | 0.37 | 0.40 | 0.37 | 0.37 | 0.37 | - | 7,444 |
| Aug 1, 2025 | 0.39 | 0.39 | 0.37 | 0.37 | 0.37 | - | 1,500 |
| Jul 31, 2025 | 0.38 | 0.38 | 0.37 | 0.37 | 0.37 | -3.90% | 1,198 |
| Jul 30, 2025 | 0.39 | 0.39 | 0.39 | 0.39 | 0.39 | -4.94% | 182 |
| Jul 29, 2025 | 0.37 | 0.41 | 0.37 | 0.41 | 0.41 | 6.58% | 2,025 |
| Jul 28, 2025 | 0.38 | 0.38 | 0.38 | 0.38 | 0.38 | -3.77% | 3,052 |
| Jul 25, 2025 | 0.38 | 0.42 | 0.38 | 0.39 | 0.39 | -8.08% | 3,700 |
| Jul 24, 2025 | 0.43 | 0.43 | 0.38 | 0.43 | 0.43 | 2.29% | 1,300 |
| Jul 23, 2025 | 0.39 | 0.42 | 0.38 | 0.42 | 0.42 | 0.02% | 2,399 |
| Jul 22, 2025 | 0.39 | 0.42 | 0.39 | 0.42 | 0.42 | 7.67% | 784 |
| Jul 21, 2025 | 0.42 | 0.42 | 0.39 | 0.39 | 0.39 | -7.12% | 3,321 |
| Jul 18, 2025 | 0.39 | 0.42 | 0.39 | 0.42 | 0.42 | 0.06% | 2,476 |
| Jul 17, 2025 | 0.42 | 0.42 | 0.42 | 0.42 | 0.42 | - | - |
| Jul 16, 2025 | 0.39 | 0.42 | 0.39 | 0.42 | 0.42 | -0.06% | 16,286 |
| Jul 15, 2025 | 0.40 | 0.42 | 0.39 | 0.42 | 0.42 | 0.21% | 4,914 |
| Jul 14, 2025 | 0.38 | 0.42 | 0.38 | 0.42 | 0.42 | -8.91% | 5,289 |
| Jul 11, 2025 | 0.37 | 0.46 | 0.37 | 0.46 | 0.46 | - | 3,680 |
| Jul 10, 2025 | 0.37 | 0.46 | 0.37 | 0.46 | 0.46 | 0.59% | 3,987 |
| Jul 9, 2025 | 0.41 | 0.46 | 0.37 | 0.46 | 0.46 | 13.76% | 23,291 |
| Jul 8, 2025 | 0.42 | 0.42 | 0.36 | 0.40 | 0.40 | -2.07% | 620 |
| Jul 7, 2025 | 0.41 | 0.41 | 0.41 | 0.41 | 0.41 | 14.03% | 200 |
| Jul 3, 2025 | 0.36 | 0.36 | 0.36 | 0.36 | 0.36 | -10.00% | 5,000 |