Montauk Renewables, Inc. SEC filings MNTK
Montauk Renewables, Inc. has 180 filings in SEC EDGAR's recent list, going back to Oct 14, 2020. Its latest annual report, Form ARS, was filed on Apr 10, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 5, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 6, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 20, 2026 |
| 4 | Insider transaction | May 13, 2026 | May 11, 2026 |
| 4 | Insider transaction | Nov 26, 2025 | Nov 24, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 24, 2025 | — |
| SCHEDULE 13D | Ownership over 5% (active) | Nov 10, 2025 | — |
| 3 | Initial insider ownership | Nov 10, 2025 | Nov 3, 2025 |
| 4 | Insider transaction | Nov 26, 2024 | Nov 24, 2024 |
| 3 | Initial insider ownership | Apr 3, 2024 | Apr 2, 2024 |
| 4 | Insider transaction | Nov 27, 2023 | Nov 24, 2023 |
| 4 | Insider transaction | Sep 18, 2023 | Sep 15, 2023 |
| 3 | Initial insider ownership | Sep 18, 2023 | Sep 15, 2023 |
| 4 | Insider transaction | Apr 26, 2023 | Apr 19, 2023 |
| 4 | Insider transaction | Apr 26, 2023 | Apr 19, 2023 |
| 4 | Insider transaction | Apr 26, 2023 | Apr 19, 2023 |
| 4 | Insider transaction | Apr 26, 2023 | Apr 19, 2023 |
| 4 | Insider transaction | Apr 26, 2023 | Apr 19, 2023 |
| 4 | Insider transaction | Dec 5, 2022 | Dec 1, 2022 |
| 4 | Insider transaction | Nov 29, 2022 | Nov 28, 2022 |
| 4 | Insider transaction | Nov 29, 2022 | Nov 28, 2022 |
| 3/A | Form 3/a submission | Feb 11, 2022 | Jan 21, 2021 |
| 3/A | Form 3/a submission | Feb 11, 2022 | Jan 21, 2021 |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 11, 2022 | — |
| 4 | Insider transaction | Feb 1, 2022 | Jan 28, 2022 |
| 4 | Insider transaction | Feb 1, 2022 | Jan 28, 2022 |
| 4 | Insider transaction | Feb 1, 2022 | Jan 28, 2022 |
| 4 | Insider transaction | Feb 1, 2022 | Jan 28, 2022 |
| 4 | Insider transaction | Feb 1, 2022 | Jan 28, 2022 |
| 4 | Insider transaction | Feb 1, 2022 | Jan 28, 2022 |
| 3 | Initial insider ownership | Jan 3, 2022 | Jan 1, 2022 |
| 4 | Insider transaction | Dec 1, 2021 | Dec 1, 2021 |
| 3 | Initial insider ownership | Oct 26, 2021 | Oct 25, 2021 |
| 3 | Initial insider ownership | Jun 14, 2021 | Jun 4, 2021 |
| 4/A | Form 4/a submission | Apr 1, 2021 | Jan 28, 2021 |
| 4 | Insider transaction | Apr 1, 2021 | Jan 26, 2021 |
| 4/A | Form 4/a submission | Apr 1, 2021 | Jan 28, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Apr 1, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Mar 30, 2021 | — |
| 4 | Insider transaction | Jan 29, 2021 | Jan 28, 2021 |
| 4 | Insider transaction | Jan 29, 2021 | Jan 28, 2021 |
| 4 | Insider transaction | Jan 29, 2021 | Jan 28, 2021 |
| 4 | Insider transaction | Jan 29, 2021 | Jan 28, 2021 |
| 4 | Insider transaction | Jan 29, 2021 | Jan 28, 2021 |
| 4 | Insider transaction | Jan 25, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
| 3 | Initial insider ownership | Jan 21, 2021 | Jan 21, 2021 |
Showing 58 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
Company profile
- Industry
- Gas & Other Services Combined (SIC 4932)
- Listed as
- MNTK (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Pittsburgh, PA
- SEC filer status
- , Emerging growth company
- SEC CIK
- 1826600
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.