ClearSign Technologies Corporation (CLIR)
NASDAQ: CLIR · Real-Time Price · USD
3.760
-0.030 (-0.79%)
At close: Jun 22, 2026, 4:00 PM EDT
3.720
-0.040 (-1.06%)
After-hours: Jun 22, 2026, 4:10 PM EDT
ClearSign Technologies Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Jun 22, 2026 | 3.89 | 3.94 | 3.62 | 3.72 | 3.72 | -1.85% | 19,041 |
| Jun 18, 2026 | 4.10 | 4.10 | 3.71 | 3.79 | 3.79 | -6.42% | 34,004 |
| Jun 17, 2026 | 4.14 | 4.14 | 4.02 | 4.05 | 4.05 | -1.70% | 13,974 |
| Jun 16, 2026 | 4.33 | 4.33 | 4.07 | 4.12 | 4.12 | -0.36% | 25,775 |
| Jun 15, 2026 | 4.28 | 4.28 | 4.08 | 4.14 | 4.14 | 1.35% | 12,568 |
| Jun 12, 2026 | 4.18 | 4.29 | 4.08 | 4.08 | 4.08 | -2.16% | 10,994 |
| Jun 11, 2026 | 4.32 | 4.32 | 4.07 | 4.17 | 4.17 | -0.48% | 16,093 |
| Jun 10, 2026 | 4.28 | 4.34 | 4.07 | 4.19 | 4.19 | 0.72% | 18,238 |
| Jun 9, 2026 | 4.25 | 4.43 | 4.07 | 4.16 | 4.16 | 0.24% | 22,773 |
| Jun 8, 2026 | 3.93 | 4.25 | 3.93 | 4.15 | 4.15 | 5.33% | 19,702 |
| Jun 5, 2026 | 4.31 | 4.40 | 3.94 | 3.94 | 3.94 | -7.94% | 9,512 |
| Jun 4, 2026 | 4.35 | 4.48 | 4.28 | 4.28 | 4.28 | -2.28% | 17,549 |
| Jun 3, 2026 | 4.40 | 4.47 | 4.38 | 4.38 | 4.38 | -1.75% | 11,033 |
| Jun 2, 2026 | 4.45 | 4.55 | 4.36 | 4.46 | 4.46 | -0.27% | 9,665 |
| Jun 1, 2026 | 4.55 | 4.66 | 3.73 | 4.47 | 4.47 | -3.46% | 7,939 |
| May 29, 2026 | 4.39 | 4.69 | 4.27 | 4.63 | 4.63 | 1.54% | 57,987 |
| May 28, 2026 | 4.45 | 4.75 | 4.41 | 4.56 | 4.56 | 2.47% | 45,441 |
| May 27, 2026 | 4.40 | 4.65 | 4.40 | 4.45 | 4.45 | -3.89% | 14,490 |
| May 26, 2026 | 4.61 | 4.88 | 4.60 | 4.63 | 4.63 | -4.54% | 51,487 |
| May 22, 2026 | 4.74 | 4.89 | 4.61 | 4.85 | 4.85 | -3.19% | 17,891 |
| May 21, 2026 | 4.73 | 5.01 | 4.59 | 5.01 | 5.01 | 2.24% | 8,068 |
| May 20, 2026 | 4.61 | 5.09 | 4.51 | 4.90 | 4.90 | 6.52% | 16,855 |
| May 19, 2026 | 4.47 | 4.65 | 4.46 | 4.60 | 4.60 | 4.31% | 6,202 |
| May 18, 2026 | 4.71 | 4.82 | 4.41 | 4.41 | 4.41 | -6.37% | 25,389 |
| May 15, 2026 | 4.86 | 5.07 | 4.62 | 4.71 | 4.71 | -9.51% | 21,737 |
| May 14, 2026 | 4.61 | 5.56 | 4.57 | 5.21 | 5.21 | 16.97% | 29,320 |
| May 13, 2026 | 4.49 | 4.74 | 4.35 | 4.45 | 4.45 | -2.20% | 16,132 |
| May 12, 2026 | 4.38 | 4.75 | 4.37 | 4.55 | 4.55 | 4.24% | 17,329 |
| May 11, 2026 | 4.61 | 4.61 | 4.18 | 4.37 | 4.36 | -3.86% | 22,542 |
| May 8, 2026 | 4.80 | 4.80 | 4.21 | 4.54 | 4.54 | -6.00% | 26,176 |
| May 7, 2026 | 4.97 | 4.98 | 4.62 | 4.83 | 4.83 | -1.63% | 16,310 |
| May 6, 2026 | 4.91 | 5.01 | 4.80 | 4.91 | 4.91 | - | 15,731 |
| May 5, 2026 | 4.94 | 4.99 | 4.88 | 4.91 | 4.91 | -2.96% | 4,995 |
| May 4, 2026 | 5.03 | 5.10 | 4.57 | 5.06 | 5.06 | -1.17% | 16,145 |
| May 1, 2026 | 5.05 | 5.22 | 5.01 | 5.12 | 5.12 | 2.40% | 14,552 |
| Apr 30, 2026 | 5.33 | 5.33 | 5.00 | 5.00 | 5.00 | -6.89% | 9,144 |
| Apr 29, 2026 | 5.33 | 5.56 | 5.33 | 5.37 | 5.37 | 0.75% | 2,881 |
| Apr 28, 2026 | 5.32 | 5.51 | 5.32 | 5.33 | 5.33 | 1.91% | 9,463 |
| Apr 27, 2026 | 4.88 | 5.33 | 4.73 | 5.23 | 5.23 | 4.60% | 14,731 |
| Apr 24, 2026 | 5.08 | 5.27 | 5.00 | 5.00 | 5.00 | -3.10% | 5,724 |
| Apr 23, 2026 | 5.48 | 5.50 | 5.06 | 5.16 | 5.16 | -7.69% | 15,256 |
| Apr 22, 2026 | 5.48 | 5.80 | 5.48 | 5.59 | 5.59 | 3.52% | 12,982 |
| Apr 21, 2026 | 5.44 | 5.53 | 5.21 | 5.40 | 5.40 | -0.09% | 11,908 |
| Apr 20, 2026 | 5.56 | 5.66 | 5.19 | 5.41 | 5.41 | -0.83% | 56,182 |
| Apr 17, 2026 | 5.33 | 5.68 | 5.33 | 5.45 | 5.45 | 2.25% | 21,245 |
| Apr 16, 2026 | 5.90 | 6.14 | 5.22 | 5.33 | 5.33 | -8.73% | 17,537 |
| Apr 15, 2026 | 5.60 | 5.96 | 5.60 | 5.84 | 5.84 | 8.55% | 17,682 |
| Apr 14, 2026 | 5.47 | 5.60 | 5.26 | 5.38 | 5.38 | -0.19% | 18,765 |
| Apr 13, 2026 | 5.29 | 5.39 | 4.93 | 5.39 | 5.39 | 1.89% | 47,758 |
| Apr 10, 2026 | 6.28 | 6.59 | 4.73 | 5.29 | 5.29 | -14.40% | 133,132 |