CLIR · ClearSign Technologies Corp
$4.65
+0.40 (+9.41%)
At close · Aug 14
Going-concern doubt
— flagged Aug 14, 2026
Substantial doubt about the company's ability to continue as a going concern.
“There can be no assurance that we will be successful in achieving our long term plans, or that such plans, if consummated, will result in profitable operations or enable us to continue in the long term as a going concern.”View the 10-Q filed Aug 14, 2026
Market Cap
$31.65M
Shares
6.81M
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-07-06 | 1,938 | 21,151 | 23,089 | 55.9% |
| 2026-06-29 | 2,570 | 39,725 | 42,295 | 62.8% |
| 2026-06-22 | 4,054 | 31,660 | 35,714 | 61.4% |
| 2026-06-15 | 3,635 | 40,569 | 44,204 | 51.2% |
| 2026-06-08 | 6,723 | 49,549 | 56,272 | 64.1% |
| 2026-06-01 | 3,813 | 24,481 | 28,294 | 50.9% |
| 2026-05-25 | 7,094 | 65,970 | 73,064 | 43.6% |
| 2026-05-18 | 3,791 | 47,198 | 50,989 | 68.4% |
| 2026-05-11 | 10,579 | 47,656 | 58,235 | 54.5% |
| 2026-05-04 | 7,482 | 41,880 | 49,362 | 62.2% |
| 2026-04-27 | 4,592 | 24,479 | 29,071 | 57.3% |
| 2026-04-20 | 7,327 | 25,577 | 32,904 | 32.3% |
| 2026-04-13 | 17,429 | 47,254 | 64,683 | 52.6% |
| 2026-04-06 | 46,028 | 543,336 | 589,364 | 59.0% |
| 2026-03-30 | 3,557 | 43,088 | 46,645 | 60.9% |
| 2026-03-23 | 9,593 | 23,051 | 32,644 | 55.3% |
| 2026-03-16 | 7,126 | 61,486 | 68,612 | 53.2% |
| 2026-03-09 | 58,072 | 1,133,696 | 1,191,768 | 100.0% |
| 2026-03-02 | 12,529 | 374,728 | 387,257 | 100.0% |
| 2026-02-23 | 3,812 | 199,554 | 203,366 | 100.0% |
| 2026-02-16 | 2,743 | 115,922 | 118,665 | 100.0% |
| 2026-02-09 | 16,792 | 444,310 | 461,102 | 100.0% |
| 2026-02-02 | 5,991 | 276,452 | 282,443 | 100.0% |
| 2026-01-26 | 19,021 | 681,990 | 701,011 | 100.0% |
| 2026-01-19 | 12,578 | 436,585 | 449,163 | 100.0% |
| 2026-01-12 | 17,957 | 508,997 | 526,954 | 100.0% |
| 2026-01-05 | 36,928 | 715,337 | 752,265 | 100.0% |
| 2025-12-29 | 8,871 | 364,599 | 373,470 | 100.0% |
| 2025-12-22 | 15,043 | 111,994 | 127,037 | 100.0% |
| 2025-12-15 | 44,061 | 516,362 | 560,423 | 100.0% |
| 2025-12-08 | 17,681 | 454,015 | 471,696 | 100.0% |
| 2025-12-01 | 6,196 | 173,555 | 179,751 | 100.0% |
| 2025-11-24 | 15,166 | 271,111 | 286,277 | 100.0% |
| 2025-11-17 | 8,997 | 214,897 | 223,894 | 100.0% |
| 2025-11-10 | 30,548 | 596,232 | 626,780 | 100.0% |
| 2025-11-03 | 10,810 | 331,815 | 342,625 | 100.0% |
| 2025-10-27 | 17,246 | 505,943 | 523,189 | 100.0% |
| 2025-10-20 | 19,492 | 633,999 | 653,491 | 100.0% |
| 2025-10-13 | 29,697 | 572,803 | 602,500 | 100.0% |
| 2025-10-06 | 63,662 | 2,006,408 | 2,070,070 | 100.0% |
| 2025-09-29 | 30,973 | 664,940 | 695,913 | 100.0% |
| 2025-09-22 | 86,863 | 2,737,101 | 2,823,964 | 100.0% |
| 2025-09-15 | 423,703 | 25,936,607 | 26,360,310 | 100.0% |
| 2025-09-08 | 14,163 | 252,914 | 267,077 | 100.0% |
| 2025-09-01 | 4,469 | 136,217 | 140,686 | 100.0% |
| 2025-08-25 | 13,651 | 158,626 | 172,277 | 100.0% |
| 2025-08-18 | 3,546 | 184,023 | 187,569 | 100.0% |
Showing 1–47 of 47 weeks
Key facts
CIK
1434524
CUSIP
185064201
13F (30d)
25 filings
25 filers
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