Anthony DiGiandomenico - 22 May 2025 Form 3 Insider Report for ClearSign Technologies Corp (CLIR)

Reporting relationship
Director
Issuer ticker
CLIR
Reported as of
22 May 2025
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 5 source fields
SEC form
3
Accepted by SEC
27 May 2025, 19:00:17 UTC
Prior SEC filing
29 Apr 2025
Next SEC filing
01 Jul 2025
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Anthony DiGiandomenico

Key filing fact

Anthony DiGiandomenico filed Form 3 for ClearSign Technologies Corp (CLIR) on 27 May 2025.

Key facts

  • This page summarizes Anthony DiGiandomenico's Form 3 filing for ClearSign Technologies Corp (CLIR).
  • 0 reported transactions and 1 derivative row are listed below.
  • Accepted by SEC: 27 May 2025, 19:00.

Change

  • Previous filing in this sequence was filed on 29 Apr 2025.
  • Current net transaction value: $0.

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

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (1)

CIK 0001083544 Primary reporting owner

DIGIANDOMENICO ANTHONY

Relationship
Director
Address
8023 EAST 63RD PLACE, SUITE 101, TULSA
Signature
/s/ Anthony DiGiandomenico
Signature date
27 May 2025

Reported non-derivative transactions

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

CLIR holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
544,478
Date
22 May 2025
Ownership
Direct

Reported derivative securities

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

CLIR holding Derivative

Warrants to Purchase Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date
22 May 2025
Ownership
Direct
Underlying class
Common Stock
Underlying amount
542,478
Exercise price
$1.05
* marks a reported price that did not pass the local price check.
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