ASPI (ASP Isotopes Inc. Common Stock)
Insider Trading Activity
Every open-market purchase and sale reported by ASPI 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 |
|---|---|---|---|---|---|
| 2026-09-04 | Donald George Ainscow | EVP, Gen Counsel, Secretary | Sell | — | — |
| 2026-09-04 | Robert Ainscow | COO | Sell | — | — |
| 2026-09-04 | Paul Elliot Mann | Chairman and CEO | Sell | — | — |
| 2026-07-02 | Heather Kiessling | Chief Financial Officer | Sell | — | — |
| 2026-07-02 | Donald George Ainscow | EVP, Gen Counsel, Secretary | Sell | — | — |
| 2026-07-01 | Michael Gorley | Director | Sell | — | — |
| 2026-07-01 | Todd Wider | Director | Sell | — | — |
| 2026-06-10 | Robert Ainscow | COO | Sell | — | — |
| 2026-06-03 | Heather Kiessling | Chief Financial Officer | A | — | — |
| 2026-06-03 | Robert Ainscow | Chief Operating Officer | A | — | — |
| 2026-06-03 | Donald George Ainscow | EVP, Gen Counsel, Secretary | A | — | — |
| 2026-06-03 | Paul Elliot Mann | Chairman and CEO | MIXED | — | — |
| 2026-04-17 | Duncan Moore | Director | MIXED | — | — |
| 2026-04-17 | Heather Kiessling | Chief Financial Officer | Sell | — | — |
| 2026-04-17 | Robert Ainscow | COO | Sell | — | — |
| 2026-04-13 | Robert Ainscow | COO | Sell | — | — |
| 2026-03-06 | Robert Ainscow | COO | Sell | — | — |
| 2026-03-02 | Paul Elliot Mann | Executive Chairman | Sell | — | — |
| 2025-12-29 | Heather Kiessling | Chief Financial Officer | Sell | — | — |
| 2025-12-22 | Todd Wider | Director | A | — | — |
| 2025-12-22 | Michael Gorley | Director | A | — | — |
| 2025-12-22 | Ralph L. Hunter JR | Director | A | — | — |
| 2025-12-22 | Robert John Andrew Ryan | Director | A | — | — |
| 2025-12-11 | Robert Ainscow | Interim CEO and COO | Sell | — | — |
| 2025-12-03 | Paul Elliot Mann | Executive Chairman | Sell | — | — |
| 2025-11-28 | Donald George Ainscow | EVP, Gen Counsel, Secretary | A | — | — |
| 2025-11-28 | Ralph L. Hunter JR | Director | A | — | — |
| 2025-11-28 | Robert Ainscow | Interim CEO and COO | Sell | — | — |
| 2025-11-28 | Paul Elliot Mann | Executive Officer | Sell | — | — |
| 2025-11-19 | Robert Ainscow | Interim CEO and COO | Sell | — | — |
| 2025-11-14 | Todd Wider | Director | A | — | — |
| 2025-10-16 | Robert Ainscow | Interim CEO and COO | Sell | — | — |
| 2025-10-03 | Todd Wider | Director | MIXED | — | — |
| 2025-10-02 | Michael Gorley | Director | Sell | — | — |
| 2025-09-10 | Paul Elliot Mann | Chief Executive Officer | MIXED | — | — |
| 2025-09-10 | Robert Ainscow | Chief Operating Officer | MIXED | — | — |
| 2025-09-03 | Duncan Moore | Director | Sell | — | — |
| 2025-04-17 | Robert Ainscow | Chief Operating Officer | Sell | — | — |
| 2025-04-17 | Paul Elliot Mann | Chief Executive Officer | Sell | — | — |
| 2025-04-15 | Heather Kiessling | Chief Financial Officer | A | — | — |
| 2025-04-15 | Paul Elliot Mann | Chief Executive Officer | A | — | — |
| 2025-04-15 | Robert Ainscow | Chief Operating Officer | A | — | — |
| 2024-12-11 | Duncan Moore | Director | A | — | — |
| 2024-11-21 | Michael Gorley | Director | A | — | — |
| 2024-11-21 | Duncan Moore | Director | A | — | — |
| 2024-11-21 | Robert John Andrew Ryan | Director | A | — | — |
| 2024-11-21 | Todd Wider | Director | A | — | — |
| 2024-10-16 | AK Jensen Investment Management Ltd | 10%+ Owner | A | — | — |
| 2024-09-10 | Paul Elliot Mann | Chief Executive Officer | A | — | — |
| 2024-09-10 | Robert Ainscow | Chief Operating Officer | A | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Chairman and CEO | 9,496,087 | — |
| — | 10%+ Owner | 6,746,874 | — |
| — | Director | 3,838,607 | — |
| — | Director | 3,797,423 | — |
| — | COO | 2,256,879 | — |
| — | Chief Financial Officer | 1,526,252 | — |
| — | Director | 1,104,167 | — |
| — | Director | 1,020,022 | — |
| — | EVP, Gen Counsel, Secretary | 776,322 | — |
| — | Director | 722,247 | — |
| — | Director | 652,222 | — |
| — | Director | 87,908 | — |
| — | Director | 47,018 | — |
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 ASPI quote page; the site-wide leaderboard is on the insider transactions hub.