Lou Basenese - 22 May 2025 Form 4 Insider Report for ClearSign Technologies Corp (CLIR)

Role: Director
Signature: /s/ Louis J. Basenese
Issuer symbol: CLIR
Transactions as of: 22 May 2025
Net transactions value: $0
Form type: 4
Filing time: 27 May 2025, 19:06:12 UTC
Previous filing: 23 Feb 2024
Next filing: 01 Jul 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	27 May 2025	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	+10,923		$0.000000	10,923	22 May 2025	Common Stock	10,923		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 June 30, 2025, on May 22, 2025, the reporting person was granted restricted stock units ("RSUs") under the ClearSign Technologies Corporation 2021 Equity Incentive Plan, pro-rated based on an appointment date of May 22, 2025, 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.

Content

As compensation for services as a non-executive director during the quarter ending June 30, 2025, on May 22, 2025, the reporting person was granted restricted stock units ("RSUs") under the ClearSign Technologies Corporation 2021 Equity Incentive Plan, pro-rated based on an appointment date of May 22, 2025, and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.

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.