0001434524 2026-07-06 2026-07-06 0001434524 1 2026-07-06 2026-07-06 iso4217:USD pure shares S-8 S-8 EX-FILING FEES 0001434524 ClearSign Technologies Corp N/A false S-8 ClearSign Technologies Corp Equity Common Stock, $0.0001 par value per share true 1107022 3.545 3924392.99 0.0001381 541.96 3924392.99 541.96 0.00 541.96 (1) Pursuant to Rule 416(a) under the Securities Act of 1933, as amended ("Securities Act"), this Registration Statement shall also cover any additional shares of the Registrant's common stock that become issuable in respect of the securities identified in the above table by reason of any stock dividend, stock split, recapitalization or other similar transaction effected without the Registrant's receipt of consideration that results in an increase in the number of the outstanding shares of the Registrant's common stock. (2) Estimated in accordance with Rules 457(c) and 457(h) of the Securities Act solely for the purpose of calculating the registration fee based on the average of the high and low prices of the Registrant's common stock as reported on the Nasdaq Capital Market on June 26, 2026. (3) Represents 1,107,022 additional shares of the Registrant's common stock reserved for issuance under the Registrant's Amended and Restated 2021 Equity Incentive Plan (the "2021 Plan"), including (i) 1,1077,007 shares of common stock that were added to the number of shares authorized for issuance under the 2021 Plan pursuant to stockholder approval obtained at the Registrant's 2026 annual meeting of stockholders held on June 8, 2026, and (ii) 30,015 shares of common stock that were added to the number of shares authorized for issuance under the 2021 Plan on January 1, 2026, pursuant to the provisions of the 2021 Plan that provide for an automatic annual increase in the number of shares reserved for issuance under the 2021 Plan.