ASP Isotopes Inc. Insider Trading Activity
Every SEC Form 4 insider transaction reported for ASP Isotopes Inc. (ASPI), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are ASPI insiders buying or selling?
In the last 12 months, ASP Isotopes Inc. insiders reported 3 open-market purchases ($943.3K) and 20 sales ($7.2M) — net selling of $6.3M. Since April 2023, Trabud has recorded 46 Form 4 filings for ASPI: 17 buys ($2.0M) and 29 sells ($17.6M).
Source: SEC EDGAR Form 4
What stands out
- The largest open-market purchase in the last 12 months was $881.5K by Paul Elliot Mann (Executive Chairman) on Mar 3, 2026. SEC ↗
- The most recent open-market purchase was reported on Oct 1, 2026 (17 days ago).
Key Statistics (April 2023 – Oct 17, 2026)
Total Form 4 filings
46
SEC EDGAR
Insider filers
10
Insider buys (17)
$2.0M
Insider sells (29)
$17.6M
Insider sentiment
Net sellingNet insider flow of $15.6M in net selling since April 2023, and $6.3M in net selling over the last 12 months. 2 insider buys in the last 90 days.
Recent ASPI insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Oct 17, 2026 | Robert Ainscow | COO | Sale | 22.5K | $2.11 | $47.6K | SEC ↗ |
| Oct 1, 2026 | Robert John Andrew Ryan | Director | Purchase | 15.0K | $2.68 | $40.2K | SEC ↗ |
| Sep 30, 2026 | Robert John Andrew Ryan | Director | Purchase | 8.0K | $2.70 | $21.6K | SEC ↗ |
| Sep 11, 2026 | Robert Ainscow | COO | Sale | 8.4K | $4.29 | $36.2K | SEC ↗ |
| Sep 5, 2026 | Donald George Ainscow | EVP, Gen Counsel, Secretary | Sale | 23.7K | $3.89 | $92.1K | SEC ↗ |
| Sep 5, 2026 | Robert Ainscow | COO | Sale | 25.0K | $3.90 | $97.6K | SEC ↗ |
| Sep 5, 2026 | Paul Elliot Mann | Chairman and CEO | Sale | 251.3K | $3.98 | $999.2K | SEC ↗ |
| Jul 3, 2026 | Heather Kiessling | Chief Financial Officer | Sale | 23.1K | $6.28 | $145.2K | SEC ↗ |
| Jul 3, 2026 | Donald George Ainscow | EVP, Gen Counsel, Secretary | Sale | 100.0K | $6.14 | $614.0K | SEC ↗ |
| Jul 2, 2026 | Todd Wider | Director | Sale | 100.0K | $6.19 | $618.5K | SEC ↗ |
| Jul 2, 2026 | Michael Gorley | Director | Sale | 30.0K | $6.27 | $188.1K | SEC ↗ |
| Jun 11, 2026 | Robert Ainscow | COO | Sale | 8.4K | $7.00 | $59.1K | SEC ↗ |
| Jun 4, 2026 | Paul Elliot Mann | Chairman and CEO | Sale | 251.3K | $7.98 | $2.0M | SEC ↗ |
| Apr 18, 2026 | Robert Ainscow | COO | Sale | 22.5K | $5.21 | $117.1K | SEC ↗ |
| Apr 18, 2026 | Heather Kiessling | Chief Financial Officer | Sale | 23.1K | $5.48 | $126.7K | SEC ↗ |
| Apr 18, 2026 | Duncan Moore | Director | Sale | 11.6K | $5.21 | $60.6K | SEC ↗ |
| Apr 14, 2026 | Robert Ainscow | COO | Sale | 25.0K | $4.51 | $112.8K | SEC ↗ |
| Mar 7, 2026 | Robert Ainscow | COO | Sale | 8.4K | $5.44 | $45.9K | SEC ↗ |
| Mar 3, 2026 | Paul Elliot Mann | Executive Chairman | Purchase | 162.2K | $5.44 | $881.5K | SEC ↗ |
| Dec 12, 2025 | Robert Ainscow | Interim CEO and COO | Sale | 8.4K | $6.20 | $52.3K | SEC ↗ |
| Nov 29, 2025 | Robert Ainscow | Interim CEO and COO | Sale | 25.0K | $5.77 | $144.2K | SEC ↗ |
| Nov 29, 2025 | Paul Elliot Mann | Executive Officer | Sale | 162.5K | $6.97 | $1.1M | SEC ↗ |
| Nov 20, 2025 | Robert Ainscow | Interim CEO and COO | Sale | 67.5K | $7.51 | $506.7K | SEC ↗ |
| Oct 17, 2025 | Robert Ainscow | Interim CEO and COO | Sale | 22.5K | $13.60 | $306.0K | SEC ↗ |
| Oct 4, 2025 | Todd Wider | Director | Sale | 74.1K | $8.76 | $648.8K | SEC ↗ |
Showing the 25 most recent of 46 Form 4 filings for ASP Isotopes Inc..
Most active ASPI insiders
- Robert Ainscow14 filings
- Duncan Moore7 filings
- Paul Elliot Mann7 filings
- Robert John Andrew Ryan6 filings
- Todd Wider3 filings
Ask anything about ASPI insider activity
Use Trabud's AI agent to query ASP Isotopes Inc.'s Form 4 history in plain English — "Show me ASPI CEO purchases this year" or compare it against any other ticker.
Open the AI agentASPI insider trading FAQ
Are ASP Isotopes Inc. insiders buying or selling?
In the last 12 months, ASP Isotopes Inc. insiders reported 3 open-market purchases ($943.3K) and 20 sales ($7.2M) — net selling of $6.3M. Since April 2023, Trabud has recorded 46 Form 4 filings for ASPI: 17 buys ($2.0M) and 29 sells ($17.6M). Over the full record that is net selling of $15.6M.
How many insiders trade ASPI stock?
10 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for ASP Isotopes Inc.. The most recent filing was accepted on Oct 17, 2026.
Where does Trabud get ASPI insider trading data?
All ASPI insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.