Lou Basenese - Oct 1, 2025 Form 4 Insider Report for ClearSign Technologies Corp (CLIR)

Role
Director
Signature
/s/ Louis J. Basenese
Stock symbol
CLIR
Transactions as of
Oct 1, 2025
Transactions value $
$0
Form type
4
Date filed
10/3/2025, 06:00 PM
Previous filing
Jul 3, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Basenese Lou Director 8023 E. 63RD PLACE, SUITE 101, TULSA /s/ Louis J. Basenese 2025-10-03 0001809482

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CLIR Restricted Stock Units Award $0 +24.6K +53.94% $0.00 70.3K Oct 1, 2025 Common Stock 24.6K Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 As compensation for services as a non-executive director during the quarter ending December 31, 2025, the reporting person was granted restricted stock units ("RSUs") under the ClearSign Technologies Corporation 2021 Equity Incentive Plan and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.
F2 The RSUs will vest upon the first to occur of: (1) a Change in Control (as defined in the applicable RSU award agreement), (2) the reporting person's Disability (as defined in the applicable RSU award agreement); (3) the reporting person's death; or (4) the reporting person's separation from service.