Cyanotech Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
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
Jun 1, 2026	0.44	0.44	0.44	0.44	0.44	18.92%	334
May 29, 2026	0.37	0.37	0.37	0.37	0.37	-28.83%	250
May 26, 2026	0.40	0.52	0.37	0.52	0.52	-	3,476
May 22, 2026	0.52	0.52	0.52	0.52	0.52	-0.02%	463
May 15, 2026	0.53	0.53	0.38	0.52	0.52	-5.45%	4,222
May 12, 2026	0.38	0.55	0.38	0.55	0.55	33.62%	1,252
May 11, 2026	0.34	0.41	0.34	0.41	0.41	5.78%	3,404
Apr 22, 2026	0.33	0.39	0.33	0.39	0.39	3.46%	900
Apr 21, 2026	0.36	0.38	0.36	0.38	0.38	13.97%	359
Apr 20, 2026	0.39	0.39	0.33	0.33	0.33	-	1,100
Apr 17, 2026	0.33	0.33	0.33	0.33	0.33	-15.28%	147
Apr 16, 2026	0.39	0.39	0.39	0.39	0.39	-	2,200
Apr 15, 2026	0.35	0.39	0.33	0.39	0.39	15.97%	9,250
Apr 13, 2026	0.32	0.39	0.30	0.34	0.34	4.96%	8,970
Apr 10, 2026	0.34	0.34	0.32	0.32	0.32	-17.91%	423
Apr 9, 2026	0.30	0.39	0.30	0.39	0.39	29.93%	3,657
Apr 8, 2026	0.30	0.30	0.30	0.30	0.30	-	1,144