Cyanotech Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
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
Apr 7, 2026	0.37	0.40	0.28	0.30	0.30	-	18,014
Apr 2, 2026	0.30	0.30	0.23	0.30	0.30	-	12,728
Mar 31, 2026	0.23	0.30	0.23	0.30	0.30	-	4,200
Mar 30, 2026	0.30	0.30	0.30	0.30	0.30	3.45%	100
Mar 26, 2026	0.29	0.29	0.29	0.29	0.29	-	1,999
Mar 25, 2026	0.34	0.34	0.29	0.29	0.29	-	1,700
Mar 24, 2026	0.30	0.30	0.29	0.29	0.29	-17.14%	19,036
Mar 23, 2026	0.29	0.35	0.29	0.35	0.35	12.54%	5,395
Mar 20, 2026	0.31	0.35	0.29	0.31	0.31	-11.14%	2,101
Mar 17, 2026	0.27	0.35	0.27	0.35	0.35	16.67%	638
Mar 16, 2026	0.32	0.35	0.28	0.30	0.30	-11.76%	6,525
Mar 13, 2026	0.33	0.34	0.31	0.34	0.34	-	1,000
Mar 12, 2026	0.31	0.35	0.31	0.34	0.34	-24.19%	1,111
Mar 11, 2026	0.45	0.45	0.45	0.45	0.45	40.60%	100
Mar 10, 2026	0.29	0.32	0.28	0.32	0.32	-22.18%	556
Mar 9, 2026	0.29	0.41	0.29	0.41	0.41	-4.67%	2,150