CLIR
CLEARSIGN TECH (CLIR)
NASDAQ
$2.34+$0.03 (+1.30%)
Price as of Oct 23, 2026 4:10 PM EDT
  • $16.7M
    Market Cap
  • -74.05%
    1-Year Change
  • Pollution & Treatment Controls
    Industry
  • 1 Month
    -34.75%
    Low Price$2.31
    High Price$3.73
  • 3 Months
    -31.04%
    Low Price$2.31
    High Price$4.84
  • 1 Year
    -74.05%
    Low Price$4.33
    High Price$6.94
Date
Open
High
Low
Close
Change (%)
Volume
10/23/2026
2.40
2.53
2.17
2.31
-5.71%
16,283
10/22/2026
2.51
2.51
2.22
2.45
+0.41%
3,127
10/21/2026
2.50
2.54
2.32
2.44
-2.01%
9,530
10/20/2026
2.43
2.52
2.43
2.49
+6.41%
11,806
10/19/2026
2.50
2.56
2.12
2.34
-2.50%
47,562
10/16/2026
2.54
2.69
2.36
2.40
-2.04%
27,974
10/15/2026
2.77
2.78
2.35
2.45
-7.02%
24,785
10/14/2026
2.83
2.85
2.62
2.64
-8.51%
18,965
10/13/2026
3.01
3.13
2.86
2.88
-2.70%
33,285
10/12/2026
3.20
3.23
2.92
2.96
-7.79%
22,886
10/09/2026
3.12
3.32
3.12
3.21
+3.22%
25,603
10/08/2026
3.27
3.43
3.11
3.11
-5.76%
13,777
10/07/2026
3.24
3.39
3.24
3.30
0.00%
9,691
10/06/2026
3.30
3.77
3.29
3.30
0.00%
9,114
10/05/2026
3.53
3.74
3.30
3.30
-5.98%
41,682
10/02/2026
3.57
3.64
3.41
3.51
-1.13%
28,444
10/01/2026
3.33
3.76
3.26
3.55
0.00%
13,981
09/30/2026
3.76
3.86
3.55
3.55
-4.83%
7,794
09/29/2026
3.65
3.90
3.65
3.73
+2.19%
6,792
09/28/2026
3.50
3.71
3.29
3.65
+5.78%
31,508
09/25/2026
3.59
3.60
3.38
3.45
-0.27%
11,660
09/24/2026
3.52
3.73
3.41
3.46
-2.26%
17,414
09/23/2026
3.76
4.01
3.47
3.54
-5.60%
36,853
09/22/2026
3.77
3.96
3.75
3.75
-1.06%
6,100
09/21/2026
3.85
4.05
3.79
3.79
-1.56%
10,781
09/18/2026
3.71
3.90
3.71
3.85
+6.65%
19,243
09/17/2026
3.60
3.75
3.60
3.61
+2.56%
8,696
09/16/2026
3.88
3.98
3.50
3.52
-12.76%
71,974
09/15/2026
3.80
4.18
3.79
4.04
+4.81%
5,867
09/14/2026
3.97
4.27
3.80
3.85
-4.47%
23,773
09/11/2026
4.09
4.18
3.74
4.03
-0.25%
68,707
09/10/2026
4.15
4.28
3.90
4.04
-4.27%
49,884
09/09/2026
4.41
4.41
4.22
4.22
-2.09%
3,323
09/08/2026
4.00
4.72
4.00
4.31
+10.23%
19,514
09/04/2026
3.98
4.15
3.90
3.91
-4.59%
9,241
09/03/2026
4.27
4.32
3.95
4.10
-3.58%
42,242
09/02/2026
4.22
4.45
4.10
4.25
+2.41%
10,715
09/01/2026
4.20
4.20
4.15
4.15
-2.58%
1,608
08/31/2026
4.35
4.36
4.22
4.26
-4.59%
4,953
08/28/2026
4.58
4.75
4.47
4.47
-1.43%
4,944
08/27/2026
4.70
4.81
4.50
4.53
-2.79%
7,095
08/26/2026
4.67
4.80
4.57
4.66
-0.85%
8,598
08/25/2026
4.88
4.94
4.61
4.70
-2.89%
29,286
08/24/2026
4.43
4.89
4.35
4.84
+8.07%
30,212
08/21/2026
4.20
4.56
4.09
4.48
-4.40%
23,065
08/20/2026
4.53
4.96
3.86
4.69
+6.48%
31,789
08/19/2026
4.71
4.77
4.29
4.40
-5.78%
22,765
08/18/2026
4.69
4.85
4.40
4.67
+2.41%
13,806
08/17/2026
4.67
5.00
4.31
4.56
-1.94%
20,925
08/14/2026
4.10
4.70
4.10
4.65
+9.41%
27,226
08/14/2026
-$0.22 Earnings
08/13/2026
4.11
4.25
4.11
4.25
+2.80%
3,541
08/12/2026
4.06
4.20
4.06
4.13
-0.86%
2,695
08/11/2026
3.95
4.17
3.86
4.17
+6.79%
25,846
08/10/2026
3.81
3.95
3.66
3.91
+4.13%
15,469
08/07/2026
3.79
3.79
3.75
3.75
-2.34%
3,548
08/06/2026
3.88
3.91
3.73
3.84
-1.29%
9,955
08/05/2026
3.98
4.11
3.83
3.89
-2.75%
4,528
08/04/2026
3.96
4.03
3.96
4.00
+1.01%
2,991
08/03/2026
3.87
4.33
3.86
3.96
+2.59%
18,323
07/31/2026
3.88
3.96
3.85
3.86
-1.03%
1,207
07/30/2026
3.80
3.97
3.80
3.90
-2.89%
2,666
07/29/2026
3.91
4.04
3.85
4.02
-0.60%
2,758
07/28/2026
3.89
4.04
3.80
4.04
+1.51%
7,554
07/27/2026
3.74
4.00
3.74
3.98
+14.04%
18,388
07/24/2026
3.34
3.49
3.34
3.49
+4.18%
32,872
07/23/2026
3.20
3.72
3.20
3.35
+3.08%
62,410
07/22/2026
3.35
3.40
3.16
3.25
-2.99%
7,379
07/21/2026
3.40
3.43
3.35
3.35
-0.59%
3,392
07/20/2026
3.55
3.55
3.32
3.37
-6.91%
13,564
07/17/2026
3.65
3.66
3.52
3.62
-0.55%
3,845
07/16/2026
3.64
3.69
3.64
3.64
-2.15%
2,811
07/15/2026
3.60
3.72
3.60
3.72
+0.27%
3,581
07/14/2026
3.68
3.87
3.68
3.71
+2.49%
10,544
07/13/2026
3.71
3.79
3.61
3.62
-2.69%
16,743
07/10/2026
3.75
3.75
3.66
3.72
-0.80%
6,200
07/09/2026
3.72
3.80
3.70
3.75
+1.35%
5,992
07/08/2026
3.91
3.91
3.61
3.70
-3.65%
5,954
07/07/2026
4.08
4.14
3.82
3.84
-6.34%
13,004
07/06/2026
4.03
4.10
3.95
4.10
+0.99%
10,056
07/02/2026
4.08
4.24
4.06
4.06
-1.46%
9,536
07/01/2026
3.79
4.27
3.76
4.12
+12.26%
34,140
06/30/2026
3.61
3.88
3.58
3.67
+0.82%
17,466
06/29/2026
3.55
3.69
3.50
3.64
+0.55%
6,329
06/26/2026
3.40
3.70
3.39
3.62
+6.78%
14,654
06/25/2026
3.54
3.63
3.39
3.39
-3.70%
14,408
06/24/2026
3.69
3.86
3.52
3.52
-5.12%
5,172
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