CLIR
CLEARSIGN TECH (CLIR)
NASDAQ
$3.64-$0.07 (-1.88%)
Price as of Jun 23, 2026 6:21 PM EDT
  • $23.0M
    Market Cap
  • -37.90%
    1-Year Change
  • Pollution & Treatment Controls
    Industry
  • 1 Month
    -23.51%
    Low Price$3.71
    High Price$4.63
  • 3 Months
    +3.05%
    Low Price$3.71
    High Price$6.94
  • 1 Year
    -37.90%
    Low Price$0.43
    High Price$6.94
Date
Open
High
Low
Close
Change (%)
Volume
06/23/2026
3.67
3.77
3.59
3.71
-0.27%
4,891
06/22/2026
3.89
3.94
3.62
3.72
-1.85%
19,041
06/18/2026
4.10
4.10
3.71
3.79
-6.42%
34,032
06/17/2026
4.14
4.14
4.02
4.05
-1.70%
13,974
06/16/2026
4.33
4.33
4.07
4.12
-0.36%
25,775
06/15/2026
4.28
4.28
4.08
4.14
+1.35%
12,568
06/12/2026
4.18
4.29
4.08
4.08
-2.16%
10,994
06/11/2026
4.32
4.32
4.07
4.17
-0.48%
16,093
06/10/2026
4.28
4.34
4.07
4.19
+0.72%
18,238
06/09/2026
4.25
4.43
4.07
4.16
+0.24%
22,773
06/08/2026
3.93
4.25
3.93
4.15
+5.33%
19,702
06/05/2026
4.31
4.40
3.94
3.94
-7.94%
9,512
06/04/2026
4.35
4.48
4.28
4.28
-2.28%
17,549
06/03/2026
4.40
4.47
4.38
4.38
-1.75%
10,937
06/02/2026
4.45
4.55
4.36
4.46
-0.27%
9,665
06/01/2026
4.55
4.66
3.73
4.47
-3.46%
7,939
05/29/2026
4.39
4.69
4.27
4.63
+1.54%
57,987
05/28/2026
4.45
4.75
4.41
4.56
+2.47%
45,441
05/27/2026
4.40
4.65
4.40
4.45
-3.89%
14,490
05/26/2026
4.61
4.88
4.60
4.63
-4.54%
51,487
05/22/2026
4.74
4.89
4.61
4.85
-3.19%
17,891
05/21/2026
4.73
5.01
4.59
5.01
+2.24%
8,068
05/20/2026
4.61
5.09
4.51
4.90
+6.52%
16,855
05/19/2026
4.47
4.65
4.46
4.60
+4.31%
6,202
05/18/2026
4.71
4.82
4.41
4.41
-6.37%
25,389
05/15/2026
4.86
5.07
4.62
4.71
-9.51%
21,737
05/15/2026
-$0.39 Earnings
05/14/2026
4.61
5.56
4.57
5.21
+16.97%
29,320
05/13/2026
4.49
4.74
4.35
4.45
-2.20%
16,132
05/12/2026
4.38
4.75
4.37
4.55
+4.24%
17,329
05/11/2026
4.61
4.61
4.18
4.36
-3.86%
22,542
05/08/2026
4.80
4.80
4.21
4.54
-6.00%
26,176
05/07/2026
4.97
4.98
4.62
4.83
-1.63%
16,310
05/06/2026
4.91
5.01
4.80
4.91
0.00%
15,731
05/05/2026
4.94
4.99
4.88
4.91
-2.96%
4,995
05/04/2026
5.03
5.10
4.57
5.06
-1.17%
16,145
05/01/2026
5.05
5.22
5.01
5.12
+2.40%
14,552
04/30/2026
5.33
5.33
5.00
5.00
-6.89%
9,144
04/29/2026
5.33
5.56
5.33
5.37
+0.75%
2,881
04/28/2026
5.32
5.51
5.32
5.33
+1.91%
9,463
04/27/2026
4.88
5.33
4.73
5.23
+4.60%
14,731
04/24/2026
5.08
5.26
5.00
5.00
-3.10%
5,724
04/23/2026
5.48
5.50
5.06
5.16
-7.69%
15,256
04/22/2026
5.48
5.80
5.48
5.59
+3.52%
12,982
04/21/2026
5.44
5.53
5.21
5.40
-0.09%
11,908
04/20/2026
5.56
5.66
5.19
5.41
-0.83%
56,182
04/17/2026
5.33
5.68
5.33
5.45
+2.25%
21,245
04/16/2026
5.90
6.14
5.22
5.33
-8.73%
17,537
04/15/2026
5.60
5.96
5.60
5.84
+8.55%
17,682
04/14/2026
5.47
5.60
5.26
5.38
-0.19%
18,765
04/13/2026
5.29
5.39
4.93
5.39
+1.89%
47,758
04/10/2026
6.28
6.59
4.73
5.29
-14.40%
133,132
04/09/2026
6.30
6.87
5.99
6.18
-4.48%
58,115
04/09/2026
-$0.09 Earnings
04/08/2026
6.58
6.59
5.99
6.47
+5.20%
40,226
04/07/2026
6.45
6.98
5.55
6.15
-11.38%
77,114
04/06/2026
4.85
7.56
4.80
6.94
+43.69%
690,976
04/02/2026
4.72
4.94
4.31
4.83
+2.55%
8,385
04/01/2026
4.39
4.71
4.35
4.71
+8.03%
13,644
03/31/2026
3.69
4.46
3.69
4.36
+13.25%
11,129
03/30/2026
3.78
4.04
3.60
3.85
+2.94%
43,905
03/27/2026
3.71
3.76
3.24
3.74
+0.54%
9,762
03/26/2026
3.50
4.06
3.50
3.72
+4.20%
19,446
03/25/2026
3.65
3.73
3.57
3.57
+1.13%
7,075
03/24/2026
3.53
3.71
3.53
3.53
-1.94%
8,046
03/23/2026
3.78
3.84
3.52
3.60
+4.05%
14,689
03/20/2026
3.63
3.96
3.37
3.46
-4.16%
33,095
03/19/2026
3.66
3.83
3.56
3.61
-3.22%
16,519
03/18/2026
4.00
4.03
3.67
3.73
-7.67%
28,680
03/17/2026
4.26
4.34
4.01
4.04
-7.23%
25,843
03/16/2026
4.62
4.75
4.26
4.36
+0.62%
25,043
03/16/2026
1:10 Split
03/13/2026
4.22
4.40
3.90
4.33
-1.64%
321,678
03/12/2026
4.80
5.00
4.38
4.40
-1.65%
325,650
03/11/2026
5.05
5.10
4.39
4.47
-21.65%
621,555
03/10/2026
5.36
6.43
5.36
5.71
+6.51%
636,708
03/09/2026
5.62
5.62
5.25
5.36
+0.11%
63,018
03/06/2026
5.20
5.80
5.20
5.36
+2.78%
193,490
03/05/2026
5.22
5.38
5.15
5.21
-3.52%
92,753
03/04/2026
5.50
5.50
5.11
5.40
-1.66%
189,316
03/03/2026
5.40
5.60
5.40
5.49
-2.24%
25,274
03/02/2026
5.69
5.79
5.60
5.62
0.00%
58,603
02/27/2026
5.40
5.70
5.40
5.62
+0.02%
43,988
02/26/2026
5.52
5.81
5.52
5.62
-3.11%
67,259
02/25/2026
5.74
5.89
5.60
5.80
-1.34%
67,858
02/24/2026
5.95
6.10
5.50
5.88
+0.26%
76,940
02/23/2026
5.95
6.03
5.83
5.86
-1.50%
46,878
02/20/2026
6.24
6.39
5.92
5.95
-3.28%
37,233
02/19/2026
6.19
6.36
6.07
6.15
+1.40%
73,422
02/18/2026
6.20
6.45
5.97
6.07
-3.41%
42,545
02/17/2026
6.10
6.28
5.93
6.28
+2.28%
22,233
02/13/2026
5.99
6.33
5.93
6.14
+0.66%
123,713
02/12/2026
5.93
6.10
5.60
6.10
+4.99%
81,681
02/11/2026
6.11
6.27
5.80
5.81
-5.27%
84,356
02/10/2026
6.50
6.50
6.11
6.13
-6.93%
66,149
02/09/2026
6.20
7.04
5.90
6.59
+13.68%
247,566
02/06/2026
5.80
5.91
5.50
5.80
+2.06%
54,298
02/05/2026
5.71
5.88
5.57
5.68
-3.24%
86,710
02/04/2026
5.95
6.07
5.70
5.87
-4.05%
82,708
02/03/2026
5.75
6.21
5.63
6.12
+2.12%
68,598