John A. Copelyn - 11 May 2026 Form 4 Insider Report for Montauk Renewables, Inc. (MNTK)

Reporting relationship: Director
Issuer ticker: MNTK
Reported as of: 11 May 2026
Net transaction value: +$25,384
SEC form: 4
Accepted by SEC: 13 May 2026, 16:16:05 UTC
Prior SEC filing: 11 Feb 2022
Source filing: View source filing
Reporting owner signature: JOHN A. COPELYN, /s/ John Ciroli, by Power of Attorney

Key filing fact

John A. Copelyn filed Form 4 for Montauk Renewables, Inc. (MNTK) on 13 May 2026.

Key facts

This page summarizes John A. Copelyn's Form 4 filing for Montauk Renewables, Inc. (MNTK).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 13 May 2026, 16:16.

Change

Previous filing in this sequence was filed on 11 Feb 2022.
Current net transaction value: +$25,384.

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 0001833521 Primary reporting owner

Copelyn John A

Relationship: Director
Address: 5313 CAMPBELLS RUN ROAD, SUITE 200, PITTSBURGH
Signature: JOHN A. COPELYN, /s/ John Ciroli, by Power of Attorney
Signature date: 13 May 2026

Reported non-derivative transactions

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

MNTK transaction

Common Stock

Purchase

Transaction value: $25,384
Shares: +17,506
Change %
Price: $1.45
Shares after: 17,506
Date: 11 May 2026
Ownership: See Footnote
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

The underlying transaction was denominated in South African rand ("ZAR"). The amount reported in United States Dollars ("USD") has been converted from ZAR using the South African Reserve Bank exchange rate in effect on the transaction date of 16.4093 ZAR to 1 USD. The per share purchase price was ZAR 23.86.

Footnote F2

These shares of common stock, par value $0.01 ("Common Stock"), of Montauk Renewables, Inc. (the "Issuer") are owned directly by Rivetprops 47 (PTY) Ltd. ("Rivetprops") and indirectly by Mr. Copelyn. Mr. Copelyn is a member of the board of directors of Rivetprops and is deemed to have voting and investment power with respect to the shares of Common Stock held by Rivetprops.