Cyanotech Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
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
Jan 5, 2026	0.40	0.44	0.40	0.44	0.44	-	920
Jan 2, 2026	0.42	0.44	0.41	0.44	0.44	-3.33%	600
Dec 31, 2025	0.39	0.45	0.39	0.45	0.45	9.76%	9,667
Dec 30, 2025	0.37	0.45	0.37	0.41	0.41	10.81%	18,600
Dec 29, 2025	0.32	0.45	0.32	0.37	0.37	2.81%	39,149
Dec 26, 2025	0.35	0.36	0.32	0.36	0.36	5.85%	4,256
Dec 24, 2025	0.34	0.34	0.34	0.34	0.34	13.14%	502
Dec 23, 2025	0.34	0.35	0.30	0.30	0.30	-6.09%	3,170
Dec 22, 2025	0.35	0.36	0.32	0.32	0.32	-8.57%	11,653
Dec 19, 2025	0.40	0.40	0.35	0.35	0.35	-9.98%	9,265
Dec 18, 2025	0.36	0.39	0.36	0.39	0.39	-2.80%	1,200
Dec 16, 2025	0.36	0.40	0.36	0.40	0.40	2.88%	12,700
Dec 15, 2025	0.45	0.45	0.36	0.39	0.39	-13.60%	18,960
Dec 11, 2025	0.40	0.45	0.40	0.45	0.45	2.97%	1,695
Dec 10, 2025	0.44	0.44	0.44	0.44	0.44	-18.88%	100
Dec 9, 2025	0.40	0.54	0.40	0.54	0.54	-1.82%	692
Dec 8, 2025	0.45	0.55	0.44	0.55	0.55	16.74%	21,300
Dec 5, 2025	0.42	0.48	0.40	0.47	0.47	30.56%	49,878
Dec 4, 2025	0.36	0.36	0.36	0.36	0.36	-37.28%	217
Dec 2, 2025	0.34	0.57	0.34	0.57	0.57	64.00%	2,918
Dec 1, 2025	0.35	0.35	0.35	0.35	0.35	2.94%	1,101
Nov 26, 2025	0.38	0.46	0.34	0.34	0.34	1.49%	4,512
Nov 25, 2025	0.34	0.34	0.34	0.34	0.34	-	4,920
Nov 24, 2025	0.34	0.34	0.34	0.34	0.34	-0.36%	2,822