MONTAUK RENEWABLES INC (MNTK) — insider trading
Utilities · NASDAQ
MONTAUK RENEWABLES INC (MNTK) has 11 reported SEC Form 4 insider transactions in our data, including 1 open-market purchase among the most recent 11 (latest 2026-05-20).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-05-20 | Ciroli John | Officer (Chief Legal Officer) | Grant / award / vesting | 302,982 | $0.00 | $0 | Form 4 |
| 2026-05-20 | Van Asdalan Kevin A | Officer (Chief Financial Officer) | Grant / award / vesting | 302,982 | $0.00 | $0 | Form 4 |
| 2026-05-20 | McClain Sean F | Director, Officer (President & CEO) | Grant / award / vesting | 383,183 | $0.00 | $0 | Form 4 |
| 2026-05-20 | Shaw James A | Officer (Chief Operating Officer) | Grant / award / vesting | 282,842 | $0.00 | $0 | Form 4 |
| 2026-05-11 | Copelyn John A | Director | Open-market purchase | 17,506 | $1.45 | $25.4K | Form 4 |
| 2025-11-24 | Frank Sharon R | Officer (VP Environ Health & Safety) | Shares withheld for taxes / exercise cost | 2,748 | $1.67 | $4.6K | Form 4 |
| 2024-11-24 | Frank Sharon R | Officer (VP Environ Health & Safety) | Shares withheld for taxes / exercise cost | 2,748 | $4.46 | $12.3K | Form 4 |
| 2023-11-24 | Frank Sharon R | Officer (VP Environ. Health & Safety) | Shares withheld for taxes / exercise cost | 2,658 | $9.09 | $24.2K | Form 4 |
| 2023-09-15 | Barsch Michael | Officer (See Remarks) | Grant / award / vesting (derivative) | 75,000 | $0.00 | $0 | Form 4 |
| 2023-09-15 | Barsch Michael | Officer (See Remarks) | Grant / award / vesting (derivative) | 75,000 | $0.00 | $0 | Form 4 |
| 2023-09-15 | Barsch Michael | Officer (See Remarks) | Grant / award / vesting (derivative) | 75,000 | $0.00 | $0 | Form 4 |
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Transaction types are the SEC Form 4 codes: open-market purchases (P) and sales (S) are the only rows that reflect open-market conviction. Awards/vesting (A), option exercises (M/X/C), shares withheld for taxes (F) and gifts (G) are compensation or mechanical, not buying or selling on the open market. Sales may be planned and non-discretionary (e.g. a Rule 10b5-1 plan); open-market buying is not a recommendation to buy. Informational only — not financial advice.
Source: SEC EDGAR Form 3/4/5. See the full company profile: MONTAUK RENEWABLES INC (MNTK).
Last updated 2026-05-20 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.