MNTK (Montauk Renewables, Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by MNTK officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | James A Shaw | Chief Operating Officer | A | — | — |
| 2026-05-22 | Sean F McClain | President & CEO | A | — | — |
| 2026-05-22 | Kevin A Van Asdalan | Chief Financial Officer | A | — | — |
| 2026-05-22 | John Ciroli | Chief Legal Officer | A | — | — |
| 2026-05-13 | John A Copelyn | Director | Buy | — | — |
| 2025-11-26 | Sharon R Frank | VP Environ Health & Safety | F | — | — |
| 2024-11-26 | Sharon R Frank | VP Environ Health & Safety | F | — | — |
| 2023-11-27 | Sharon R Frank | VP Environ. Health & Safety | F | — | — |
| 2023-09-18 | Michael Barsch | See Remarks | A | — | — |
| 2023-04-26 | John Ciroli | See Remarks | A | — | — |
| 2023-04-26 | Kevin A Van Asdalan | CFO and Treasurer | A | — | — |
| 2023-04-26 | James A Shaw | Vice President of Operations | A | — | — |
| 2023-04-26 | Sean F McClain | President and CEO | A | — | — |
| 2023-04-26 | Sharon R Frank | VP Environ. Health & Safety | A | — | — |
| 2022-12-05 | Sharon R Frank | VP Environ. Health & Safety | F | — | — |
| 2022-11-29 | Scott E Hill | VP of Business Development | Sell | — | — |
| 2022-11-29 | Sean F McClain | President and CEO | Sell | — | — |
| 2022-02-01 | Sharon R Frank | VP Environ. Health & Safety | F | — | — |
| 2022-02-01 | John Ciroli | VP, GC and Secretary | F | — | — |
| 2022-02-01 | Kevin A Van Asdalan | CFO and Treasurer | F | — | — |
| 2022-02-01 | Sean F McClain | President and CEO | F | — | — |
| 2022-02-01 | James A Shaw | Vice President of Operations | F | — | — |
| 2022-02-01 | Scott E Hill | VP of Business Development | F | — | — |
| 2021-12-01 | Sharon R Frank | VP Environ. Health & Safety | A | — | — |
| 2021-04-01 | Scott E Hill | VP of Business Development | — | — | — |
| 2021-04-01 | Sean F McClain | President and CEO | — | — | — |
| 2021-04-01 | Bruce S Raynor | Director | J | — | — |
| 2021-01-29 | John Ciroli | VP, GC and Secretary | MIXED | — | — |
| 2021-01-29 | Scott E Hill | VP of Business Development | MIXED | — | — |
| 2021-01-29 | James A Shaw | Vice President of Operations | MIXED | — | — |
| 2021-01-29 | Sean F McClain | President and CEO | MIXED | — | — |
| 2021-01-29 | Kevin A Van Asdalan | CFO and Treasurer | MIXED | — | — |
| 2021-01-25 | Montauk Holdings Ltd | 10%+ Owner | J | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | 10%+ Owner | 2,347,199 | — |
| — | President & CEO | 1,141,172 | — |
| — | VP of Business Development | 622,810 | — |
| — | Chief Financial Officer | 497,493 | — |
| — | Chief Operating Officer | 477,387 | — |
| — | Chief Legal Officer | 470,772 | — |
| — | VP Environ Health & Safety | 39,275 | — |
| — | Director | 17,506 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MNTK quote page; the site-wide leaderboard is on the insider transactions hub.