Cyanotech Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Apr 13, 2026	0.32	0.39	0.30	0.34	0.34	4.97%	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
Mar 2, 2026	0.35	0.43	0.35	0.43	0.43	7.50%	1,300
Feb 19, 2026	0.40	0.40	0.40	0.40	0.40	13.51%	104
Feb 18, 2026	0.29	0.35	0.29	0.35	0.35	0.69%	3,170
Feb 17, 2026	0.36	0.39	0.25	0.35	0.35	-20.45%	23,710
Feb 12, 2026	0.44	0.44	0.44	0.44	0.44	-3.08%	4,770
Feb 11, 2026	0.44	0.49	0.44	0.45	0.45	3.18%	12,319
Feb 10, 2026	0.44	0.44	0.44	0.44	0.44	-13.73%	1,500
Feb 9, 2026	0.50	0.51	0.50	0.51	0.51	9.68%	3,660
Feb 6, 2026	0.47	0.47	0.47	0.47	0.47	-7.92%	18,949
Feb 5, 2026	0.51	0.51	0.51	0.51	0.51	7.45%	1,200
Feb 4, 2026	0.47	0.47	0.47	0.47	0.47	-6.00%	4,771
Feb 3, 2026	0.53	0.54	0.48	0.50	0.50	-0.79%	36,971
Feb 2, 2026	0.50	0.53	0.50	0.50	0.50	-4.91%	2,017
Jan 30, 2026	0.50	0.55	0.50	0.53	0.53	14.45%	3,599
Jan 29, 2026	0.48	0.48	0.46	0.46	0.46	-2.51%	6,736
Jan 28, 2026	0.53	0.53	0.48	0.48	0.48	-9.49%	19,484
Jan 27, 2026	0.40	0.53	0.40	0.52	0.52	28.66%	54,295
Jan 26, 2026	0.41	0.41	0.41	0.41	0.41	-2.88%	207
Jan 23, 2026	0.42	0.42	0.42	0.42	0.42	5.00%	1,001
Jan 22, 2026	0.39	0.41	0.39	0.40	0.40	-	20,175
Jan 21, 2026	0.36	0.40	0.36	0.40	0.40	0.08%	7,899
Jan 20, 2026	0.33	0.40	0.33	0.40	0.40	5.91%	16,560
Jan 16, 2026	0.33	0.38	0.33	0.38	0.38	7.83%	4,904
Jan 15, 2026	0.35	0.36	0.35	0.35	0.35	-1.07%	2,715
Jan 14, 2026	0.36	0.36	0.35	0.35	0.35	1.81%	6,741
Jan 13, 2026	0.42	0.42	0.34	0.35	0.35	-30.50%	54,950
Jan 12, 2026	0.44	0.50	0.44	0.50	0.50	-	23,010
Jan 9, 2026	0.44	0.50	0.44	0.50	0.50	-1.96%	1,337
Jan 7, 2026	0.51	0.51	0.51	0.51	0.51	13.33%	100
Jan 6, 2026	0.45	0.45	0.44	0.45	0.45	3.45%	18,433