| $247M | ||
| $203M | ||
| $40M | ||
| $31M | ||
| $21M | ||
| $18M |
Buys | $27,679 | 3 | 100 |
Sells | $0 | 0 | 0 |
| Silva Gil Todd | director | 3 | $27,679 | 0 | $0 | $27,679 |
ClearSign Technologies Corporation, founded in 2008 and headquartered in Tulsa, Oklahoma, is a company focused on inventing and refining products and technological solutions. Operating in both the United States and the People's Republic of China, its mission is to optimize the operational effectiveness, energy consumption, and safety of industrial and commercial systems, while simultaneously decreasing harmful emissions and overall expenses. The company's key product lines include the ClearSign Core Burner Technology, an advanced system combining an industrial burner with a specialized porous ceramic or metallic flame stabilizing structure. For the refinery sector, the ClearSign Core Plug & Play technology offers a straightforward, direct replacement for existing process heaters. Additionally, the ClearSign Eye Flame Sensor provides an electronic flame detection system tailored for various industrial applications. ClearSign also extends its offerings to include specialized ClearSign Core Boiler Burners and ClearSign Core Flaring Burners technologies. ClearSign Technologies serves a broad spectrum of industries, encompassing energy, institutional, commercial and industrial boiler operations, chemical manufacturing, and petrochemical processing. The organization was previously known as ClearSign Combustion Corporation before rebranding to ClearSign Technologies Corporation in November 2019.
Over the last 12 months, insiders at ClearSign Technologies Corporation have bought $27,679 and sold $0 worth of ClearSign Technologies Corporation stock.
On average, over the past 5 years, insiders at ClearSign Technologies Corporation have bought $1.04M and sold $0 worth of stock each year.
Highest buying activity among insiders over the last 12 months: Silva Gil Todd (director) — $27,679.
The last purchase of 2,000 shares for transaction amount of $10,569 was made by Silva Gil Todd (director) on 2026‑04‑23.
| 2026-04-23 | Silva Gil Todd | director | 2,000 0.0379% | $5.28 | $10,569 | -11.24% | ||
| 2026-03-17 | Silva Gil Todd | director | 2,000 0.0388% | $4.20 | $8,400 | +15.37% | ||
| 2026-03-16 | Silva Gil Todd | director | 2,000 0.0373% | $4.36 | $8,710 | +6.69% | ||
| 2024-06-24 | HOFFMAN Robert Thurston Sr | 10 percent owner | 3.35M 10.1018% | $0.91 | $3.05M | +26.70% | ||
| 2022-07-08 | Princeton Opportunity Management LLC | 0 – | $0 | $0 | -27.97% | |||
| 2022-06-14 | Pate Bruce Alan | 45,000 0.1342% | $1.12 | $50,400 | -24.11% | |||
| 2020-08-24 | Pate Bruce Alan | director | 35,000 0.1133% | $2.00 | $70,000 | +79.28% | ||
| 2020-08-24 | Meline Susanne | director | 5,000 0.0162% | $2.00 | $10,000 | +79.28% | ||
| 2019-05-17 | Pate Bruce Alan | director | 100,000 0.3646% | $1.01 | $101,240 | -5.77% | ||
| 2019-03-19 | Kendrick Donald W | Chief Technology Officer | 10,000 0.0393% | $0.94 | $9,400 | +5.32% | ||
| 2018-12-18 | Kendrick Donald W | Chief Technology Officer | 20,000 0.0794% | $1.14 | $22,800 | -5.31% | ||
| 2018-02-27 | BELL LON E | director | 222,000 1.2126% | $2.25 | $499,500 | -22.75% | ||
| 2018-02-27 | PIRNAT STEPHEN E | Chief Executive Officer | 20,000 0.1092% | $2.25 | $45,000 | -22.75% | ||
| 2018-02-27 | Meline Susanne | director | 44,444 0.2428% | $2.25 | $99,999 | -22.75% | ||
| 2018-02-27 | Fike Brian Grant | Interim CFO | 2,000 0.0109% | $2.25 | $4,500 | -22.75% | ||
| 2017-12-04 | Kendrick Donald W | Chief Technology Officer | 10,000 0.0578% | $2.13 | $21,250 | -3.85% | ||
| 2017-08-22 | Kendrick Donald W | Chief Technology Officer | 10,000 0.0639% | $2.89 | $28,907 | -20.69% | ||
| 2017-08-21 | PIRNAT STEPHEN E | Chief Executive Officer | 2,000 0.013% | $2.94 | $5,890 | -20.69% | ||
| 2017-08-18 | Ruiz Roberto | Chief Operating Officer | 2,000 0.0132% | $3.19 | $6,380 | -25.81% | ||
| 2017-08-17 | LEE ANDREW U | See Remarks | 2,000 0.0126% | $3.19 | $6,390 | -29.23% |
| Silva Gil Todd | director | 6000 0.0969% | $25,020.00 | 3 | 0 | |
| HOFFMAN Robert Thurston Sr | 10 percent owner | 9539857 154.107% | $39.78M | 1 | 0 | +26.7% |
| BD & DBG LIVING TRUST | director | 603324 9.7461% | $2.52M | 0 | 36 | |
| OSLER GEOFFREY D | Chief Marketing Officer | 425249 6.8695% | $1.77M | 0 | 5 | |
| BELL LON E | director | 354472 5.7261% | $1.48M | 3 | 0 | <0.0001% |
| RUTKOWSKI RICHARD F | Chief Executive Officer | 171250 2.7664% | $714,112.50 | 1 | 0 | <0.0001% |
| Pate Bruce Alan | 150000 2.4231% | $625,500.00 | 3 | 0 | +16.47% | |
| PIRNAT STEPHEN E | Chief Executive Officer | 113947 1.8407% | $475,158.99 | 4 | 0 | <0.0001% |
| Princeton Opportunity Management LLC | 110519 1.7853% | $460,864.23 | 1 | 0 | ||
| Meline Susanne | director | 54249 0.8763% | $226,218.33 | 2 | 0 | +28.27% |
| Kendrick Donald W | Chief Technology Officer | 44233 0.7145% | $184,451.61 | 4 | 0 | <0.0001% |
| COLANNINO JOSEPH | Chief Technology Officer | 25775 0.4164% | $107,481.75 | 4 | 0 | +34.46% |
| HARMON JAMES N | Chief Financial Officer | 16000 0.2585% | $66,720.00 | 4 | 0 | +18.64% |
| LEE ANDREW U | See Remarks | 5800 0.0937% | $24,186.00 | 4 | 0 | +21.58% |
| Ruiz Roberto | Chief Operating Officer | 5560 0.0898% | $23,185.20 | 3 | 0 | <0.0001% |
| Fike Brian Grant | Interim CFO | 1000 0.0162% | $4,170.00 | 1 | 0 | <0.0001% |
| Increased Positions | 14 | +33.33% | 339,062 | +8.05% |
| Decreased Positions | 13 | -30.95% | 89,229 | -2.12% |
| New Positions | 5 | New | 76,357 | New |
| Sold Out Positions | 5 | Sold Out | 59,657 | Sold Out |
| Total Postitions | 43 | +2.38% | 4M | +5.93% |
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| Simon Quick Advisors, Llc | $344.00 | 1.14% | 603,149 | 0 | 0% | 2025-09-30 |
| Geode Capital Management, Llc | $298.00 | 0.99% | 523,229 | -30,446 | -5.5% | 2025-09-30 |
| Cambridge Investment Research Advisors, Inc. | $253.00 | 0.84% | 443,000 | 0 | 0% | 2025-09-30 |
| Blackrock, Inc. | $114.00 | 0.38% | 199,304 | 0 | 0% | 2025-09-30 |
| Creative Planning | $91.00 | 0.3% | 159,053 | +17,200 | +12.13% | 2025-09-30 |
| Hightower Advisors, Llc | $72.00 | 0.24% | 126,809 | -2,000 | -1.55% | 2025-09-30 |
| Ddd Partners, Llc | $66.00 | 0.22% | 115,000 | 0 | 0% | 2025-09-30 |
| State Street Corp | $51.00 | 0.17% | 88,989 | 0 | 0% | 2025-09-30 |
| Northern Trust Corp | $43.00 | 0.14% | 75,466 | 0 | 0% | 2025-09-30 |