Brent Hinds - 26 Feb 2026 Form 4 Insider Report for ClearSign Technologies Corp (CLIR)

Reporting relationship: Chief Financial Officer
Issuer ticker: CLIR
Reported as of: 26 Feb 2026
Net transaction value: -$11,659
SEC form: 4
Accepted by SEC: 02 Mar 2026, 19:00:16 UTC
Prior SEC filing: 24 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Brent Hinds

Key filing fact

Brent Hinds filed Form 4 for ClearSign Technologies Corp (CLIR) on 02 Mar 2026.

Key facts

This page summarizes Brent Hinds's Form 4 filing for ClearSign Technologies Corp (CLIR).
3 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 02 Mar 2026, 19:00.

Change

Previous filing in this sequence was filed on 24 Feb 2026.
Current net transaction value: -$11,659.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001888082 Primary reporting owner

Hinds Brent

Relationship: Chief Financial Officer
Address: 8023 E. 63RD PLACE, SUITE 101, TULSA
Signature: /s/ Brent Hinds
Signature date: 02 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CLIR transaction

Common Stock

Award

Transaction value: $0
Shares: +56,645
Change %: +42%
Price: $0.000000
Shares after: 191,585
Date: 26 Feb 2026
Ownership: Direct
Footnotes: F1

CLIR transaction

Common Stock

Tax liability

Transaction value: $11,659
Shares: -20,761
Change %: -11%
Price: $0.5616
Shares after: 170,824
Date: 26 Feb 2026
Ownership: Direct
Footnotes: F2

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

CLIR transaction Derivative

Restricted Stock Unit

Award

Transaction value: $0
Shares: +47,009
Change %
Price: $0.000000
Shares after: 47,009
Date: 26 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 47,009
Exercise price
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

Represents a one-time bonus grant to the reporting person for services as an executive officer for the year ended December 31, 2025, upon achievement of certain performance target metrics approved by the human capital and compensation committee of the board of directors. The number of shares awarded is based on the closing price of the Company's common stock on February 26, 2026, of $0.5616.

Footnote F2

Represents the payment of the reporting person's tax liability by withholding shares incident to the receipt of the Company's common stock issued on February 26, 2026, based on the closing price of the Company's common stock on February 26, 2026, of $0.5616.

Footnote F3

Represents a one-time bonus restricted stock units ("RSUs") grant to reporting person for services as an executive officer for the year ended December 31, 2025, and each RSU represents a right to receive one share of common stock or the cash equivalent thereof.

Footnote F4

The RSUs granted on February 26, 2026, vest in three equal installments commencing on the first anniversary of the grant date.