ASP ISOTOPES INC (ASPI) — insider trading
Materials · NASDAQ
ASP ISOTOPES INC (ASPI) has 18 reported SEC Form 4 insider transactions in our data, including 12 open-market sales among the most recent 18 (latest 2026-07-01-05:00).
Recent Form 4 transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-01-05:00 | Kiessling Heather | Officer (Chief Financial Officer) | Open-market sale | 23,124 | $6.28 | $145.2K | Form 4 |
| 2026-06-30-05:00 | Ainscow Donald George | Officer (EVP, Gen Counsel, Secretary) | Open-market sale | 100,000 | $6.14 | $614.0K | Form 4 |
| 2026-06-30-05:00 | Gorley Michael | Director | Open-market sale | 30,000 | $6.27 | $188.1K | Form 4 |
| 2026-06-30-05:00 | Wider Todd | Director | Open-market sale | 50,000 | $6.12 | $306.0K | Form 4 |
| 2026-06-29-05:00 | Wider Todd | Director | Open-market sale | 50,000 | $6.25 | $312.5K | Form 4 |
| 2026-06-08-05:00 | Ainscow Robert | Officer (COO) | Open-market sale | 8,438 | $7.00 | $59.1K | Form 4 |
| 2026-06-03-05:00 | Mann Paul Elliot | Director, Officer (Chairman and CEO) | Open-market sale | 83,759 | $7.76 | $650.0K | Form 4 |
| 2026-06-02-05:00 | Mann Paul Elliot | Director, Officer (Chairman and CEO) | Open-market sale | 83,758 | $8.29 | $694.4K | Form 4 |
| 2026-06-01-05:00 | Mann Paul Elliot | Director, Officer (Chairman and CEO) | Open-market sale | 83,758 | $7.88 | $660.0K | Form 4 |
| 2026-05-28-05:00 | Kiessling Heather | Officer (Chief Financial Officer) | Grant / award / vesting | 840,000 | — | — | Form 4 |
| 2026-05-28-05:00 | Ainscow Donald George | Officer (EVP, Gen Counsel, Secretary) | Grant / award / vesting | 400,000 | — | — | Form 4 |
| 2026-05-28-05:00 | Ainscow Robert | Officer (Chief Operating Officer) | Grant / award / vesting | 800,000 | — | — | Form 4 |
| 2026-05-28-05:00 | Mann Paul Elliot | Director, Officer (Chairman and CEO) | Grant / award / vesting | 2,233,555 | — | — | Form 4 |
| 2026-04-16-05:00 | Moore Duncan | Director | Open-market sale | 11,642 | $5.21 | $60.6K | Form 4 |
| 2026-04-16-05:00 | Ainscow Robert | Officer (COO) | Open-market sale | 22,500 | $5.21 | $117.1K | Form 4 |
| 2026-04-15-05:00 | Kiessling Heather | Officer (Chief Financial Officer) | Open-market sale | 23,124 | $5.48 | $126.7K | Form 4 |
| 2025-12-18-05:00 | Moore Duncan | Director | Grant / award / vesting | 36,548 | — | — | Form 4 |
| 2025-11-12-05:00 | Moore Duncan | Director | Grant / award / vesting | 25,469 | — | — | 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: ASP ISOTOPES INC (ASPI).
Last updated 2026-07-01 (most recent filing date).
Informational only — NOT financial advice. Insider filings are sourced from SEC EDGAR and shown with their reported dates.