Sean F. McClain - 20 May 2026 Form 4 Insider Report for Montauk Renewables, Inc. (MNTK)

Reporting relationship: President & CEO, Director
Issuer ticker: MNTK
Reported as of: 20 May 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 22 May 2026, 16:55:09 UTC
Prior SEC filing: 26 Apr 2023
Source filing: View source filing
Reporting owner signature: /s/ John Ciroli, by Power of Attorney

Key filing fact

Sean F. McClain filed Form 4 for Montauk Renewables, Inc. (MNTK) on 22 May 2026.

Key facts

This page summarizes Sean F. McClain's Form 4 filing for Montauk Renewables, Inc. (MNTK).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 22 May 2026, 16:55.

Change

Previous filing in this sequence was filed on 26 Apr 2023.
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

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001833634 Primary reporting owner

McClain Sean F

Relationship: President & CEO, Director
Address: 5313 CAMPBELLS RUN ROAD, SUITE 200, PITTSBURGH
Signature: /s/ John Ciroli, by Power of Attorney
Signature date: 22 May 2026

Reported non-derivative transactions

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

MNTK transaction

Common Stock

Award

Transaction value
Shares: +383,183
Change %: +51%
Price: $0.000000^*
Shares after: 1,141,172
Date: 20 May 2026
Ownership: Direct
Footnotes: F1, F2

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents Restricted Stock Units ("RSUs"). The grant of RSUs shall vest ratably on the third, fourth and fifth anniversary of date of grant. Each RSU is settled solely for one share of Common Stock.

Footnote F2

Includes 383,183 RSUs.