Cyanotech Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Oct 14, 2026	0.78	0.78	0.70	0.70	0.70	2.01%	1,972
Oct 13, 2026	0.78	0.78	0.69	0.69	0.69	2.42%	6,960
Oct 12, 2026	0.67	0.78	0.67	0.67	0.67	-14.32%	13,141
Oct 9, 2026	0.75	0.78	0.75	0.78	0.78	5.68%	13,300
Oct 8, 2026	0.50	0.74	0.50	0.74	0.74	39.60%	12,065
Oct 6, 2026	0.50	0.55	0.50	0.53	0.53	32.53%	17,025
Oct 5, 2026	0.41	0.55	0.40	0.40	0.40	-2.44%	12,050
Oct 2, 2026	0.31	0.53	0.31	0.41	0.41	17.14%	15,875
Oct 1, 2026	0.31	0.38	0.31	0.35	0.35	-6.94%	21,772
Sep 30, 2026	0.36	0.38	0.36	0.38	0.38	-10.45%	1,107
Sep 28, 2026	0.42	0.42	0.42	0.42	0.42	-14.34%	2,501
Sep 21, 2026	0.42	0.49	0.42	0.49	0.49	7.76%	10,073
Sep 17, 2026	0.42	0.46	0.42	0.46	0.46	-10.78%	2,850
Sep 15, 2026	0.51	0.51	0.51	0.51	0.51	5.00%	6,617
Sep 11, 2026	0.49	0.49	0.49	0.49	0.49	-	2,000
Sep 10, 2026	0.50	0.51	0.49	0.49	0.49	-4.35%	3,780
Sep 8, 2026	0.51	0.51	0.51	0.51	0.51	4.57%	141
Sep 4, 2026	0.51	0.51	0.49	0.49	0.49	-8.38%	2,100
Sep 3, 2026	0.46	0.53	0.46	0.53	0.53	3.92%	11,606
Sep 2, 2026	0.51	0.51	0.51	0.51	0.51	21.43%	1,220
Aug 31, 2026	0.42	0.42	0.42	0.42	0.42	-16.00%	943
Aug 28, 2026	0.53	0.53	0.35	0.50	0.50	11.11%	50,500
Aug 26, 2026	0.45	0.45	0.45	0.45	0.45	-	500
Aug 25, 2026	0.49	0.50	0.45	0.45	0.45	-	19,290
Aug 18, 2026	0.46	0.46	0.45	0.45	0.45	-8.16%	9,288
Aug 14, 2026	0.49	0.49	0.49	0.49	0.49	6.52%	510
Aug 13, 2026	0.50	0.50	0.46	0.46	0.46	-	1,358
Aug 11, 2026	0.48	0.53	0.46	0.46	0.46	-13.19%	3,674
Aug 10, 2026	0.53	0.53	0.53	0.53	0.53	-	100
Aug 7, 2026	0.53	0.53	0.53	0.53	0.53	8.14%	1,891
Aug 6, 2026	0.49	0.49	0.49	0.49	0.49	-7.51%	670
Aug 5, 2026	0.43	0.53	0.43	0.53	0.53	-	811
Jul 29, 2026	0.53	0.53	0.53	0.53	0.53	0.02%	1,000
Jul 21, 2026	0.41	0.53	0.39	0.53	0.53	-0.02%	12,014
Jul 20, 2026	0.53	0.53	0.53	0.53	0.53	-0.02%	1,532
Jul 16, 2026	0.44	0.53	0.44	0.53	0.53	3.90%	4,905
Jul 15, 2026	0.51	0.51	0.51	0.51	0.51	-3.76%	200
Jul 14, 2026	0.53	0.53	0.53	0.53	0.53	8.14%	1,125
Jul 13, 2026	0.53	0.53	0.49	0.49	0.49	-7.53%	3,828
Jul 10, 2026	0.47	0.53	0.47	0.53	0.53	2.89%	8,424
Jul 9, 2026	0.52	0.52	0.52	0.52	0.52	-0.79%	1,040
Jul 8, 2026	0.52	0.52	0.52	0.52	0.52	-0.04%	1,000
Jul 7, 2026	0.52	0.52	0.52	0.52	0.52	6.72%	1,002
Jul 1, 2026	0.49	0.49	0.49	0.49	0.49	12.10%	100
Jun 30, 2026	0.43	0.43	0.43	0.43	0.43	-16.43%	1,000
Jun 25, 2026	0.52	0.52	0.52	0.52	0.52	-0.02%	1,500
Jun 23, 2026	0.50	0.52	0.50	0.52	0.52	33.21%	9,731
Jun 15, 2026	0.39	0.39	0.39	0.39	0.39	-2.50%	125
Jun 11, 2026	0.40	0.40	0.40	0.40	0.40	2.56%	3,999
Jun 10, 2026	0.40	0.40	0.39	0.39	0.39	-11.36%	4,501