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Zacks Company Profile for ClearSign Technologies Corporation (CLIR : NSDQ)

• Company Description    ClearSign Technologies Corporation provides industrial combustion and sensing technologies for industrial and commercial systems. The company's OEM products consists ClearSign Core(TM) and ClearSign Eye(TM) and other sensing configurations. It serves energy, commercial/industrial boiler, chemical, petrochemical, transport and power industries. ClearSign Technologies Corporation, formerly known as ClearSign Combustion Corporation, is based in Seattle, United States. Number of Employees: 18

• Price / Volume Information    Yesterday's Closing Price: $0.56 Daily Weekly Monthly 20 Day Moving Average: 116,628 shares Shares Outstanding: 53.27 (millions) Market Capitalization: $29.62 (millions) Beta: 1.19 52 Week High: $1.60 52 Week Low: $0.46 Short Interest Ratio:   % Price Change % Price Change Relative to S&P 500 4 Week -26.84% -26.71% 12 Week -39.55% -40.52% Year To Date 0.00% 0.00%

• Address & Contact Information Street Address Phone / Fax Email Address Web URL 8023 E. 63RD PLACE SUITE 101 - TULSA,OK 74133 USA ph: 918-236-6461 fax: 206-299-3553 mselinger@firmirgroup.com http://www.clearsign.com

• General Corporate Information    Officers Colin J. Deller - Chief Executive Officer and Director Brent Hinds - Chief Financial Officer Judith S. Schrecker - Lead Independent Director David Maley - Director G. Todd Silva - Director Peer Information ClearSign Technologies Corporation (BOOM) ClearSign Technologies Corporation (AMBIQ) ClearSign Technologies Corporation (DSGR) ClearSign Technologies Corporation (MSM) ClearSign Technologies Corporation (SIEGY) ClearSign Technologies Corporation (MATTQ) Industry / Sector / Ticker Info Analyst Coverage: No Industry Group: Industrial Services Sector: Industrial Products CUSIP: 185064102 SIC: 3823 Fiscal Year Fiscal Year End: December Last Reported Quarter: 09/01/25 Next Expected EPS Date: 04/01/26 Share - Related Items Shares Outstanding: 53.27 Most Recent Split Date: (:1) Beta: 1.19 Market Capitalization: $29.62 (millions)

• EPS Information     • Dividend Information Analyst Coverage: No Dividend Yield: 0.00% Current Fiscal Quarter EPS Consensus Estimate: $-0.03 Indicated Annual Dividend: $0.00 Current Fiscal Year EPS Consensus Estimate: $-0.10 Payout Ratio: Number of Estimates in the Fiscal Year Consensus: 1.00 Change In Payout Ratio: Estmated Long-Term EPS Growth Rate: % Last Dividend Paid: NA - $0.00 Next EPS Report Date: 04/01/26

• Fundamental Ratios P/E Current FY Estimate: - Trailing 12 Months: - PEG Ratio: - Price Ratios Price/Book: 3.21 Price/Cash Flow: - Price / Sales: 13.76 EPS Growth vs. Year Ago Period: -50.00% vs. Previous Quarter: 0.00% Sales Growth vs. Year Ago Period: -44.65% vs. Previous Quarter: 673.68% ROE 12/31/25 - - 09/30/25 - -56.07 06/30/25 - -47.61 ROA 12/31/25 - - 09/30/25 - -44.22 06/30/25 - -39.34 Current Ratio 12/31/25 - - 09/30/25 - 3.28 06/30/25 - 3.56 Quick Ratio 12/31/25 - - 09/30/25 - 3.28 06/30/25 - 3.56 Operating Margin 12/31/25 - - 09/30/25 - -294.89 06/30/25 - -203.65 Net Margin 12/31/25 - - 09/30/25 - -294.89 06/30/25 - -203.65 Pre-Tax Margin 12/31/25 - - 09/30/25 - -294.89 06/30/25 - -203.65 Book Value 12/31/25 - - 09/30/25 - 0.17 06/30/25 - 0.20 Inventory Turnover 12/31/25 - - 09/30/25 - - 06/30/25 - - Debt-to-Equity 12/31/25 - - 09/30/25 - 0.00 06/30/25 - 0.00 Debt-to-Capital 12/31/25 - - 09/30/25 - 0.00 06/30/25 - 0.00

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