Cyanotech Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
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
Jul 2, 2025	0.40	0.40	0.34	0.40	0.40	-	4,200
Jul 1, 2025	0.33	0.40	0.33	0.40	0.40	19.76%	13,200
Jun 30, 2025	0.42	0.42	0.33	0.33	0.33	-16.50%	11,950
Jun 27, 2025	0.40	0.40	0.40	0.40	0.40	13.64%	1,000
Jun 26, 2025	0.35	0.35	0.35	0.35	0.35	-	-
Jun 25, 2025	0.35	0.35	0.35	0.35	0.35	-	3
Jun 24, 2025	0.35	0.35	0.35	0.35	0.35	-	-
Jun 23, 2025	0.35	0.35	0.35	0.35	0.35	-	115
Jun 20, 2025	0.36	0.36	0.35	0.35	0.35	-2.06%	760
Jun 18, 2025	0.36	0.36	0.36	0.36	0.36	-	25
Jun 17, 2025	0.42	0.42	0.36	0.36	0.36	-7.85%	22,786
Jun 16, 2025	0.39	0.39	0.39	0.39	0.39	-	1,333
Jun 13, 2025	0.39	0.39	0.39	0.39	0.39	-5.12%	273
Jun 12, 2025	0.41	0.41	0.41	0.41	0.41	-2.14%	296
Jun 11, 2025	0.41	0.42	0.40	0.42	0.42	4.50%	25,228
Jun 10, 2025	0.40	0.40	0.40	0.40	0.40	-4.28%	1,000
Jun 9, 2025	0.37	0.42	0.35	0.42	0.42	4.97%	44,586
Jun 6, 2025	0.40	0.40	0.40	0.40	0.40	-1.24%	329
Jun 5, 2025	0.42	0.42	0.36	0.41	0.41	-2.85%	2,900