ClearSign Technologies Corporation (CLIR)

NASDAQ: CLIR · Real-Time Price · USD

0.757

-0.003 (-0.38%)

At close: Dec 5, 2025, 4:00 PM EST

0.765

+0.008 (1.07%)

After-hours: Dec 5, 2025, 4:00 PM EST

ClearSign Technologies Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Dec 5, 2025	0.77	0.77	0.75	0.77	0.77	0.68%	25,670
Dec 4, 2025	0.77	0.78	0.75	0.76	0.76	-1.03%	19,781
Dec 3, 2025	0.72	0.80	0.72	0.77	0.77	6.96%	87,314
Dec 2, 2025	0.70	0.72	0.70	0.72	0.72	0.20%	33,347
Dec 1, 2025	0.73	0.74	0.67	0.72	0.72	-3.27%	81,595
Nov 28, 2025	0.74	0.75	0.74	0.74	0.74	0.11%	43,816
Nov 26, 2025	0.75	0.75	0.73	0.74	0.74	-1.80%	61,221
Nov 25, 2025	0.77	0.78	0.68	0.75	0.75	-3.04%	196,223
Nov 24, 2025	0.82	0.82	0.75	0.78	0.78	-4.40%	99,463
Nov 21, 2025	0.84	0.85	0.79	0.81	0.81	-0.97%	88,147
Nov 20, 2025	0.87	0.87	0.82	0.82	0.82	-4.46%	34,009
Nov 19, 2025	0.80	0.87	0.80	0.86	0.86	3.84%	72,592
Nov 18, 2025	0.84	0.84	0.79	0.83	0.83	-0.70%	32,611
Nov 17, 2025	0.86	0.88	0.79	0.83	0.83	-5.47%	112,949
Nov 14, 2025	0.86	0.98	0.78	0.88	0.88	1.84%	265,747
Nov 13, 2025	0.83	0.97	0.75	0.87	0.87	4.16%	446,172
Nov 12, 2025	0.85	0.89	0.83	0.83	0.83	-3.27%	75,381
Nov 11, 2025	0.95	0.95	0.85	0.86	0.86	-7.35%	135,916
Nov 10, 2025	0.95	0.96	0.91	0.93	0.93	-0.29%	43,140
Nov 7, 2025	0.92	0.93	0.90	0.93	0.93	3.83%	112,051
Nov 6, 2025	0.93	0.94	0.88	0.90	0.90	-2.24%	35,887
Nov 5, 2025	0.85	0.96	0.84	0.92	0.92	5.94%	164,800
Nov 4, 2025	0.88	0.91	0.84	0.86	0.86	1.17%	142,465
Nov 3, 2025	0.89	0.89	0.83	0.85	0.85	-1.75%	39,612
Oct 31, 2025	0.90	0.92	0.85	0.87	0.87	-0.90%	70,011
Oct 30, 2025	0.90	0.94	0.86	0.88	0.88	-2.46%	47,125
Oct 29, 2025	0.91	0.92	0.90	0.90	0.90	-1.39%	110,814
Oct 28, 2025	0.87	1.02	0.87	0.91	0.91	8.64%	399,443
Oct 27, 2025	0.88	0.89	0.81	0.84	0.84	-5.63%	184,402
Oct 24, 2025	0.95	0.95	0.86	0.89	0.89	-6.26%	211,159
Oct 23, 2025	0.87	0.97	0.85	0.95	0.95	14.41%	231,682
Oct 22, 2025	0.85	0.85	0.77	0.83	0.83	-3.62%	232,902
Oct 21, 2025	0.91	0.97	0.83	0.86	0.86	-9.37%	195,274
Oct 20, 2025	0.84	0.98	0.84	0.95	0.95	11.66%	131,496
Oct 17, 2025	0.81	0.90	0.81	0.85	0.85	-2.20%	198,082
Oct 16, 2025	1.02	1.02	0.85	0.87	0.87	-10.09%	206,267
Oct 15, 2025	0.91	1.00	0.91	0.97	0.97	-3.71%	240,562
Oct 14, 2025	0.86	1.01	0.83	1.01	1.01	9.24%	192,910
Oct 13, 2025	0.88	0.93	0.81	0.92	0.92	6.98%	208,726
Oct 10, 2025	0.92	0.92	0.81	0.86	0.86	-6.51%	254,424
Oct 9, 2025	1.00	1.00	0.91	0.92	0.92	-5.90%	202,633
Oct 8, 2025	0.93	0.99	0.88	0.98	0.98	1.82%	171,011
Oct 7, 2025	1.09	1.11	0.86	0.96	0.96	-9.42%	1,189,546
Oct 6, 2025	0.90	1.12	0.88	1.06	1.06	23.53%	1,354,399
Oct 3, 2025	0.84	0.88	0.82	0.86	0.86	1.74%	189,188
Oct 2, 2025	0.80	0.86	0.79	0.84	0.84	6.49%	256,459
Oct 1, 2025	0.77	0.81	0.77	0.79	0.79	2.70%	67,135
Sep 30, 2025	0.83	0.83	0.75	0.77	0.77	-3.73%	112,806
Sep 29, 2025	0.86	0.87	0.78	0.80	0.80	-0.62%	297,659
Sep 26, 2025	0.80	0.86	0.78	0.81	0.81	10.24%	468,699
Sep 25, 2025	0.77	0.78	0.71	0.73	0.73	-3.54%	154,411
Sep 24, 2025	0.72	0.77	0.72	0.76	0.76	6.01%	197,348
Sep 23, 2025	0.80	0.89	0.64	0.72	0.72	-14.65%	951,540
Sep 22, 2025	0.66	0.90	0.61	0.84	0.84	22.88%	2,681,329
Sep 19, 2025	0.51	0.95	0.51	0.68	0.68	36.26%	36,197,285
Sep 18, 2025	0.51	0.54	0.48	0.50	0.50	-1.46%	392,847
Sep 17, 2025	0.50	0.53	0.48	0.51	0.51	0.83%	180,329
Sep 16, 2025	0.52	0.53	0.46	0.50	0.50	-5.04%	550,952
Sep 15, 2025	0.56	0.57	0.53	0.53	0.53	-1.83%	161,133
Sep 12, 2025	0.55	0.56	0.54	0.54	0.54	-0.90%	103,924
Sep 11, 2025	0.56	0.58	0.54	0.55	0.55	-3.88%	88,023
Sep 10, 2025	0.59	0.60	0.57	0.57	0.57	-2.36%	68,367
Sep 9, 2025	0.57	0.60	0.57	0.58	0.58	-0.77%	43,356
Sep 8, 2025	0.60	0.60	0.59	0.59	0.59	-0.54%	53,664
Sep 5, 2025	0.60	0.60	0.58	0.59	0.59	1.26%	40,814
Sep 4, 2025	0.60	0.60	0.58	0.58	0.58	-2.34%	49,418
Sep 3, 2025	0.59	0.60	0.58	0.60	0.60	-0.78%	36,170
Sep 2, 2025	0.61	0.61	0.58	0.60	0.60	2.64%	46,127
Aug 29, 2025	0.59	0.60	0.58	0.58	0.58	-1.50%	16,744
Aug 28, 2025	0.59	0.60	0.58	0.59	0.59	0.17%	40,229
Aug 27, 2025	0.58	0.60	0.58	0.59	0.59	2.10%	35,861
Aug 26, 2025	0.58	0.61	0.57	0.58	0.58	-0.85%	88,668
Aug 25, 2025	0.61	0.61	0.57	0.59	0.59	-0.85%	81,597
Aug 22, 2025	0.60	0.62	0.58	0.59	0.59	2.63%	91,153
Aug 21, 2025	0.58	0.58	0.55	0.57	0.57	5.91%	101,807
Aug 20, 2025	0.55	0.55	0.54	0.54	0.54	-1.49%	29,976
Aug 19, 2025	0.55	0.55	0.52	0.55	0.55	-1.61%	43,735
Aug 18, 2025	0.57	0.59	0.56	0.56	0.56	-0.37%	35,185
Aug 15, 2025	0.60	0.60	0.56	0.56	0.56	-8.32%	79,414
Aug 14, 2025	0.62	0.62	0.58	0.61	0.61	4.79%	76,777
Aug 13, 2025	0.55	0.59	0.55	0.59	0.59	10.38%	62,302
Aug 12, 2025	0.57	0.57	0.50	0.53	0.53	-1.83%	118,146
Aug 11, 2025	0.55	0.57	0.53	0.54	0.54	-3.59%	80,055
Aug 8, 2025	0.57	0.58	0.55	0.56	0.56	-0.30%	98,657
Aug 7, 2025	0.56	0.59	0.54	0.56	0.56	-3.12%	58,916
Aug 6, 2025	0.56	0.58	0.56	0.58	0.58	5.05%	30,680
Aug 5, 2025	0.57	0.57	0.54	0.55	0.55	0.90%	60,071
Aug 4, 2025	0.56	0.57	0.54	0.55	0.55	0.39%	29,236
Aug 1, 2025	0.57	0.58	0.54	0.55	0.55	-5.55%	45,097
Jul 31, 2025	0.60	0.60	0.57	0.58	0.58	1.75%	13,622
Jul 30, 2025	0.60	0.63	0.57	0.57	0.57	-4.71%	65,041
Jul 29, 2025	0.64	0.65	0.60	0.60	0.60	-5.54%	54,721
Jul 28, 2025	0.61	0.65	0.61	0.63	0.63	5.78%	204,371
Jul 25, 2025	0.57	0.62	0.57	0.60	0.60	1.74%	95,171
Jul 24, 2025	0.59	0.60	0.57	0.59	0.59	1.54%	73,349
Jul 23, 2025	0.58	0.62	0.57	0.58	0.58	-3.11%	96,196
Jul 22, 2025	0.60	0.63	0.57	0.60	0.60	1.71%	132,327
Jul 21, 2025	0.58	0.61	0.57	0.59	0.59	0.79%	84,489
Jul 18, 2025	0.58	0.63	0.57	0.58	0.58	7.48%	148,417
Jul 17, 2025	0.51	0.57	0.49	0.54	0.54	8.00%	133,473