| 2026-04-02 | +46.8% | news | Stock Titan | Director Lou Basenese receives 3,024 options at ClearSign Technologies (CLIR) - Stock Titan |
| 2026-04-02 | +46.8% | earnings | Stock Titan | ClearSign (CLIR) director receives 3,024 fully vested stock options as Q1 pay - Stock Titan |
| 2026-04-02 | +46.8% | news | Stock Titan | ClearSign (CLIR) director awarded RSUs and stock options as board compensation - Stock Titan |
| 2026-04-05 | +43.2% | news | Seeking Alpha | Quant snapshot: Delta Air Lines leads top-rated names as Byrna Technologies, Simulations Plus lag |
| 2024-06-26 | +41.3% | legal | SEC EDGAR | CLIR 8-K: 1.01, 3.02, 5.03, 5.07 (SEC Filing) |
| 2024-11-20 | +25.0% | earnings | Seeking Alpha | Clearsign Technologies GAAP EPS of -$0.02, revenue of $1.86M beats by $0.31M |
| 2026-01-07 | +22.0% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-03-11 | -21.2% | earnings | Stock Titan | New hydrogen-capable burner keeps emissions ultra-low across fuel blends - Stock Titan |
| 2025-04-03 | -21.0% | earnings | Seeking Alpha | ClearSign Technologies Corporation (CLIR) Q4 2024 Earnings Call Transcript |
| 2024-11-21 | +20.8% | earnings | Seeking Alpha | ClearSign Technologies Corporation (CLIR) Q3 2024 Earnings Call Transcript |
| 2024-11-21 | +20.8% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2023-06-15 | +19.3% | legal | SEC EDGAR | CLIR 8-K: 1.01, 3.03, 5.03, 7.01 (SEC Filing) |
| 2026-04-09 | -18.7% | earnings | Seeking Alpha | Clearsign Technologies GAAP EPS of -$0.99, revenue of $5.2M misses by $4.53M |
| 2026-04-09 | -18.7% | news | Stock Titan | Hydrogen-ready burner maker ClearSign posts record quarter, sales up 44% - Stock Titan |
| 2026-03-31 | +18.7% | news | The Globe and Mail | ClearSign Combustion Regains Nasdaq Minimum Bid Compliance - The Globe and Mail |
| 2023-04-07 | +17.7% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-03-10 | -16.4% | news | Seeking Alpha | ClearSign Technologies announces 1-for-10 reverse stock split to regain Nasdaq compliance |
| 2026-03-10 | -16.4% | news | MSN | ClearSign Technologies announces 1-for-10 reverse stock split to regain Nasdaq compliance - MSN |
| 2026-03-10 | -16.4% | news | Stock Titan | ClearSign to shrink share count 10-to-1 to meet Nasdaq $1 rule - Stock Titan |
| 2026-03-10 | -16.4% | news | TipRanks | ClearSign Implements Reverse Stock Split to Maintain Nasdaq Listing - TipRanks |
| 2026-03-10 | -16.4% | news | The Globe and Mail | ClearSign Technologies Corporation Announces 1-for-10 Reverse Stock Split to be Effective As of March 16, 2026 - The Globe and Mail |
| 2025-07-17 | +15.5% | legal | Seeking Alpha | ClearSign files $50M mixed securities shelf |
| 2025-04-02 | -15.4% | earnings | Seeking Alpha | Clearsign Technologies GAAP EPS of -$0.11, revenue of $3.6M |
| 2025-08-13 | +14.7% | earnings | Seeking Alpha | Clearsign Technologies Q2 2025 Earnings Preview |
| 2023-09-01 | -14.5% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-03-30 | +14.0% | legal | SEC EDGAR | CLIR 8-K: 8.01 and (SEC Filing) |
| 2026-03-30 | +14.0% | news | Investing.com | ClearSign Technologies regains Nasdaq compliance with minimum bid price rule - Investing.com |
| 2026-03-30 | +14.0% | news | Stock Titan | ClearSign Technologies (NASDAQ: CLIR) back in Nasdaq bid compliance - Stock Titan |
| 2026-04-10 | -13.7% | earnings | Seeking Alpha | ClearSign Technologies Corporation (CLIR) Q4 2025 Earnings Call Transcript |
| 2026-04-10 | -13.7% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-04-10 | -13.7% | earnings | Stock Titan | ClearSign Technologies (Nasdaq: CLIR) grows 2025 revenue 44% on burner orders - Stock Titan |
| 2026-04-10 | -13.7% | news | ACCESS Newswire | ClearSign Technologies Corporation to Participate in Water Tower Research Insights Conference on April 15th 2026 - ACCESS Newswire |
| 2023-09-16 | +13.0% | news | InvestorPlace | 3 Stocks That Could Easily Hand You 1,000% Gains by 2026 - InvestorPlace |
| 2025-06-03 | -12.1% | legal | Seeking Alpha | ClearSign Technologies secures boiler burner order from California Boiler |
| 2021-07-30 | -11.9% | legal | SEC EDGAR | CLIR 8-K: 5.02, 7.01 (SEC Filing) |
| 2024-11-19 | +11.1% | earnings | Seeking Alpha | Clearsign Technologies Q3 2024 Earnings Preview |
| 2025-05-21 | -11.0% | earnings | Seeking Alpha | ClearSign Technologies Corporation (CLIR) Q1 2025 Earnings Call Transcript |
| 2025-05-21 | -11.0% | earnings | Seeking Alpha | Clearsign Technologies GAAP EPS of -$0.04, revenue of $0.4M misses by $0.24M |
| 2023-11-15 | -10.3% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-05-23 | -9.4% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-05-23 | -9.4% | news | Intellectia AI | CLIR Forecast — Price Prediction for 2026. Should I Buy CLIR? - Intellectia AI |
| 2026-04-07 | -9.4% | news | Stock Titan | ClearSign’s April 15 investor event will spotlight hydrogen tech and orders - Stock Titan |
| 2022-04-08 | -9.4% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2022-09-06 | +9.3% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-07-18 | +9.1% | legal | SEC EDGAR | CLIR 8-K: 1.01, 8.01 (SEC Filing) |
| 2025-11-04 | +9.1% | news | Seeking Alpha | ClearSign wins burner order for West Texas energy facility |
| 2021-11-29 | -9.0% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2024-06-07 | -8.8% | legal | SEC EDGAR | CLIR 8-K: 8.01 (SEC Filing) |
| 2025-04-04 | -8.7% | legal | SEC EDGAR | CLIR 8-K: 2.02, 3.01, 7.01 (SEC Filing) |
| 2025-02-27 | -8.4% | news | Seeking Alpha | ClearSign receives purchase order for flare for California project |
| 2024-05-28 | -8.3% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2023-05-24 | +8.2% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-08-15 | -7.9% | earnings | Seeking Alpha | Clearsign Technologies GAAP EPS of -$0.03 |
| 2025-08-15 | -7.9% | earnings | Seeking Alpha | ClearSign Technologies Corporation (CLIR) Q2 2025 Earnings Call Transcript |
| 2025-08-15 | -7.9% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-10-07 | -7.8% | legal | Seeking Alpha | ClearSign secures 32-burner engineering order from global supermajor |
| 2024-08-23 | +7.6% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2025-04-25 | -7.5% | news | Stock Titan | CLIR Stock Price, News & Analysis | Clearsign Technologies - Stock Titan |
| 2025-11-21 | -7.4% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2024-04-25 | -6.9% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01, 8.01 (SEC Filing) |
| 2024-04-24 | -6.5% | legal | SEC EDGAR | CLIR 8-K: 5.02, 7.01, 8.01 (SEC Filing) |
| 2024-06-20 | -6.3% | legal | SEC EDGAR | CLIR 8-K: 5.02, 8.01 (SEC Filing) |
| 2024-02-07 | -5.9% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2024-05-03 | -5.8% | legal | SEC EDGAR | CLIR 8-K: 3.01, 8.01 (SEC Filing) |
| 2026-03-04 | -5.6% | news | Investing.com | ClearSign Technologies shareholders approve reverse stock split and set annual meeting date - Investing.com |
| 2026-02-25 | -5.4% | news | Seeking Alpha | ClearSign Technologies Corporation (CLIR) Business Update Call Transcript |
| 2026-02-25 | -5.4% | legal | SEC EDGAR | CLIR 8-K: 2.02, 7.01 (SEC Filing) |
| 2026-03-19 | -5.3% | news | Stock Titan | ClearSign Technologies (CLIR) director buys 4,000 shares in open market - Stock Titan |
| 2026-03-19 | -5.3% | M&A | GuruFocus | Insider Buying: Gil Silva Acquires Shares of ClearSign Technologies Corp (CLIR) - GuruFocus |
| 2025-11-20 | -5.3% | earnings | Seeking Alpha | ClearSign Technologies Corporation (CLIR) Q3 2025 Earnings Call Transcript |
| 2024-04-23 | -4.8% | legal | SEC EDGAR | CLIR 8-K: 1.01, 3.02 (SEC Filing) |
| 2024-12-04 | +4.8% | news | Seeking Alpha | ClearSign awarded purchase order from Rogue Combustion |
| 2024-04-19 | -4.7% | legal | SEC EDGAR | CLIR 8-K: 1.01, 3.02, 7.01 (SEC Filing) |
| 2024-08-06 | -4.2% | legal | SEC EDGAR | CLIR 8-K: 5.02, 7.01 (SEC Filing) |
| 2025-12-22 | +4.2% | news | Trefis | With ClearSign Technologies Stock Sliding, Have You Assessed The Risk? - Trefis |
| 2025-08-08 | -4.2% | legal | SEC EDGAR | CLIR 8-K: 3.01, 5.02, 8.01 (SEC Filing) |
| 2025-08-07 | -4.1% | news | Seeking Alpha | ClearSign Technologies announces engineering order |
| 2025-11-18 | +4.1% | earnings | Seeking Alpha | Clearsign Technologies Q3 2025 Earnings Preview |
| 2025-11-17 | -3.9% | legal | SEC EDGAR | CLIR 8-K: 5.03, 8.01 (SEC Filing) |
| 2024-05-10 | -3.9% | legal | SEC EDGAR | CLIR 8-K: 3.02, 8.01 (SEC Filing) |
| 2025-07-11 | -3.5% | legal | SEC EDGAR | CLIR 8-K: 8.01 (SEC Filing) |
| 2025-05-27 | -3.1% | legal | SEC EDGAR | CLIR 8-K: 1.01, 5.02, 7.01 (SEC Filing) |
| 2025-08-29 | +3.0% | legal | SEC EDGAR | CLIR 8-K: 8.01 (SEC Filing) |
| 2023-09-22 | -2.8% | legal | SEC EDGAR | CLIR 8-K: 8.01 and (SEC Filing) |
| 2023-08-29 | -2.8% | legal | SEC EDGAR | CLIR 8-K: 8.01 and (SEC Filing) |
| 2021-10-18 | -2.7% | legal | SEC EDGAR | CLIR 8-K: 5.02, 7.01 (SEC Filing) |
| 2026-04-08 | -2.7% | news | Cổng thông tin điện tử Tỉnh Sơn La | Is ClearSign (CLIR) Stock Overvalued Now | Price at $6.23, Up 1.30% - Breakout Stocks - Cổng thông tin điện tử Tỉnh Sơn La |
| 2025-01-30 | +2.5% | news | Seeking Alpha | ClearSign Technologies announces federal grant |
| 2023-05-30 | +2.5% | legal | SEC EDGAR | CLIR 8-K: 8.01 and (SEC Filing) |
| 2022-06-07 | +2.5% | legal | SEC EDGAR | CLIR 8-K: 2.02, 5.07, 7.01 (SEC Filing) |
| 2021-06-21 | +1.9% | legal | SEC EDGAR | CLIR 8-K: 2.02, 5.07, 7.01 (SEC Filing) |
| 2025-03-12 | -1.7% | news | Seeking Alpha | ClearSign announces purchase order for a Core M1 from Devco |
| 2023-02-24 | -1.6% | legal | SEC EDGAR | CLIR 8-K: 5.02, 7.01 (SEC Filing) |
| 2024-01-05 | -1.6% | legal | SEC EDGAR | CLIR 8-K: 1.01 and (SEC Filing) |
| 2024-10-02 | +1.4% | news | Stock Titan | ClearSign Technologies Announces Public Release of California Statewide Gas Emerging Technologies (GET) Report on Boiler Burners - Stock Titan |
| 2025-12-24 | +1.3% | news | Yahoo Finance | We're Not Very Worried About ClearSign Technologies' (NASDAQ:CLIR) Cash Burn Rate - Yahoo Finance |
| 2022-08-02 | +1.0% | legal | SEC EDGAR | CLIR 8-K: 5.02 and (SEC Filing) |
| 2022-10-18 | +0.9% | analyst | Zacks Investment Research | What is the current Price Target and Forecast for ClearSign Technologies (CLIR) - Zacks Investment Research |
| 2024-12-09 | -0.9% | news | Seeking Alpha | ClearSign Technologies regains Nasdaq compliance |
| 2024-12-09 | -0.9% | legal | SEC EDGAR | CLIR 8-K: 8.01 and (SEC Filing) |
| 2025-05-20 | -0.7% | earnings | Seeking Alpha | Clearsign Technologies Q1 2025 Earnings Preview |
| 2023-02-09 | +0.6% | news | Moomoo | ClearSign Technologies (NASDAQ:CLIR) Share Price Crosses Below 200-Day Moving Average of $0.81 - Moomoo |
| 2021-09-10 | +0.5% | legal | SEC EDGAR | CLIR 8-K: 2.02, 5.03, 7.01 (SEC Filing) |
| 2025-09-17 | -0.3% | legal | Seeking Alpha | ClearSign Technologies secures engineering order for heater retrofit at Texas refinery |
| 2022-06-01 | -0.3% | legal | SEC EDGAR | CLIR 8-K: 8.01 and (SEC Filing) |
| 2022-05-31 | -0.2% | legal | SEC EDGAR | CLIR 8-K: 1.01, 8.01 (SEC Filing) |
| 2024-04-08 | -0.2% | news | CNN | symbol__ Stock Quote Price and Forecast - CNN |
| 2026-04-20 | -0.1% | news | Cổng thông tin điện tử tỉnh Lào Cai | ClearSign (CLIR) Stock: Price Action Overview (Mini Selloff) 2026-04-20 - High Interest Stocks - Cổng thông tin điện tử tỉnh Lào Cai |
| 2025-11-19 | -0.1% | earnings | Seeking Alpha | Clearsign Technologies GAAP EPS of -$0.03, revenue of $1.03M misses by $0.99M |
| 2026-04-24 | — | analyst | MSN | ClearSign Technologies (CLIR) price target increased by 900.00% to 20.40 - MSN |