ASP Isotopes Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Kiessling Heather | Chief Financial Officer | Sale | 80,000 | $5.80 | $464,000 | 732,500 | Dec 18, 2025 |
| Wider Todd | — | Award / Grant | 36,548 | — | — | 772,247 | Dec 18, 2025 |
| Ryan Robert John Andrew | — | Award / Grant | 36,548 | — | — | 652,222 | Dec 18, 2025 |
| Hunter Ralph L. JR | — | Award / Grant | 36,548 | — | — | 47,018 | Dec 18, 2025 |
| Gorley Michael | — | Award / Grant | 36,548 | — | — | 117,908 | Dec 18, 2025 |
| Ainscow Robert | Interim CEO and COO | Sale | 8,438 | $6.20 | $52,316 | 1,546,255 | Dec 8, 2025 |
| Mann Paul Elliot | Executive Chairman | Sale | 162,153 | $5.75 | $932,380 | 7,759,538 | Dec 1, 2025 |
| Ainscow Robert | Interim CEO and COO | Sale | 25,000 | $5.77 | $144,250 | 1,554,693 | Nov 25, 2025 |
| Mann Paul Elliot | Executive Officer | Sale | 112,500 | $7.51 | $844,875 | 7,971,691 | Nov 25, 2025 |
| Ainscow Robert | Interim CEO and COO | Sale | 67,500 | $7.51 | $506,925 | 1,579,693 | Nov 17, 2025 |
| Wider Todd | — | Award / Grant | 25,469 | — | — | 735,699 | Nov 12, 2025 |
| Ainscow Robert | Interim CEO and COO | Sale | 22,500 | $13.60 | $306,000 | 1,647,193 | Oct 14, 2025 |
| Gorley Michael | — | Sale | 64,000 | $9.75 | $624,000 | 81,360 | Sep 30, 2025 |
| Wider Todd | — | Option Exercise | 96,000 | $2.00 | $192,000 | 806,230 | Sep 15, 2025 |
| Mann Paul Elliot | Chief Executive Officer | Tax Withholding | 234,466 | $8.53 | $1,999,995 | 8,165,268 | Sep 9, 2025 |
| Ainscow Robert | Chief Operating Officer | Option Exercise | 12,000 | $2.00 | $24,000 | 1,569,158 | Sep 8, 2025 |
| Hunter Ralph L. JR | — | Award / Grant | 10,470 | — | — | 10,470 | Sep 6, 2025 |
| Moore Duncan | — | Sale | 75,000 | $9.28 | $696,000 | 994,553 | Aug 29, 2025 |
| Ainscow Donald George | EVP, Gen Counsel, Secretary | Award / Grant | 400,000 | — | — | 500,000 | Aug 1, 2025 |
| Ainscow Robert | Chief Operating Officer | Sale | 66,668 | $5.62 | $374,674 | 1,419,992 | Apr 15, 2025 |
| Mann Paul Elliot | Chief Executive Officer | Sale | 316,667 | $5.45 | $1,725,835 | 7,632,120 | Apr 15, 2025 |
| Ainscow Robert | Chief Operating Officer | Award / Grant | 400,000 | — | — | 1,619,992 | Apr 14, 2025 |
| Kiessling Heather | Chief Financial Officer | Award / Grant | 400,000 | — | — | 812,500 | Apr 14, 2025 |
| Mann Paul Elliot | Chief Executive Officer | Award / Grant | 1,441,361 | — | — | 8,265,454 | Apr 14, 2025 |
| Moore Duncan | — | Award / Grant | 95,238 | — | — | 1,069,553 | Dec 9, 2024 |
| Gorley Michael | — | L | 1,000 | $5.05 | $5,050 | 145,360 | Nov 29, 2024 |
| Wider Todd | — | Award / Grant | 42,522 | — | — | 710,230 | Nov 20, 2024 |
| Moore Duncan | — | Award / Grant | 42,522 | — | — | 896,689 | Nov 20, 2024 |
| Ryan Robert John Andrew | — | Award / Grant | 42,522 | — | — | 614,624 | Nov 20, 2024 |
| Gorley Michael | — | Award / Grant | 42,522 | — | — | 144,360 | Nov 20, 2024 |
| AK Jensen Investment Management Ltd | — | Award / Grant | 30,000 | $3.03 | $90,900 | 6,746,874 | Oct 11, 2024 |
| Ainscow Robert | Chief Operating Officer | Award / Grant | 300,000 | — | — | 1,219,992 | Sep 6, 2024 |
| Mann Paul Elliot | Chief Executive Officer | Award / Grant | 978,466 | — | — | 6,824,093 | Sep 6, 2024 |
| Wider Todd | — | Award / Grant | 77,626 | — | — | 572,470 | Aug 13, 2024 |
| Gorley Michael | — | Award / Grant | 8,380 | — | — | 101,838 | Aug 13, 2024 |
| AK Jensen Investment Management Ltd | — | Sale | 80,000 | $2.23 | $178,400 | 6,566,874 | Aug 1, 2024 |
| Ainscow Robert | Chief Operating Officer | Purchase | 19,992 | — | — | 919,992 | Jul 15, 2024 |
| Mann Paul Elliot | Chief Executive Officer | Purchase | 39,984 | — | — | 5,845,627 | Jul 15, 2024 |
| AK Jensen Investment Management Ltd | — | Purchase | 70,000 | $3.05 | $213,500 | 6,586,874 | Jul 9, 2024 |
| Kiessling Heather | Chief Financial Officer | Award / Grant | 400,000 | — | — | 412,500 | Jul 1, 2024 |
| Ryan Robert John Andrew | — | L | 1,050 | $5.40 | $5,670 | 615,674 | May 30, 2024 |
| Ryan Robert John Andrew | — | Purchase | 7,500 | $3.34 | $25,050 | 572,102 | Apr 30, 2024 |
| Ryan Robert John Andrew | — | Purchase | 5,000 | $3.48 | $17,400 | 551,555 | Apr 26, 2024 |
| Ryan Robert John Andrew | — | Purchase | 2,000 | $3.40 | $6,800 | 546,555 | Apr 25, 2024 |
| Ryan Robert John Andrew | — | Purchase | 100 | $2.54 | $254 | 521,459 | Jan 14, 2024 |
| Donfeld Joshua Jay | — | Purchase | 104,167 | $0.96 | $100,000 | 1,104,167 | Oct 26, 2023 |
| Moore Duncan | — | Award / Grant | 200,000 | — | — | 750,000 | Oct 26, 2023 |
| Wider Todd | — | Purchase | 94,844 | $0.96 | $91,050 | 494,844 | Oct 26, 2023 |
| Gorley Michael | — | Award / Grant | 93,458 | — | — | 93,458 | Oct 23, 2023 |
| Moore Duncan | — | Purchase | 50,000 | $0.50 | $25,000 | 500,000 | Jun 29, 2023 |