ASP Isotopes Inc. (ASPI) Insider Trading & SEC Filings
Last SEC filing
ASP Isotopes Inc. (ASPI) has filed 9 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-07-03. 12 Form 8-K material event filings were reported by ASPI in the last 90 days. 5 Form 144 notices of proposed sale were filed for ASPI stock. InsiderAlpha tracks every ASPI SEC filing - Form 4, Form 144, and 8-K - in real time, including Rule 10b5-1 plan detection.
About ASP Isotopes Inc. (ASPI)
ASP Isotopes Inc. trades under the ticker ASPI. InsiderAlpha tracks 36 primary SEC Form 4 filings from 10 reporting insiders for ASPI since 2024, sourced directly from SEC EDGAR.
| SEC CIK | 0001921865 |
|---|
90-Day SEC Filing Activity
| Form 4 filings (90d) | 9 |
|---|---|
| Form 8-K filings (90d) | 12 |
| Form 144 notices (90d) | 5 |
| Latest Form 4 filing | 2026-07-03 |
Recent ASPI Insider Transactions (Form 4)
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Paul Elliot Mann | Executive Chairman | S - Open-market sale [10b5-1] | 162.2K | $5.75 | $933K | SEC | |
| Paul Elliot Mann | Executive Officer | S - Open-market sale [10b5-1] | 50.0K | $5.77 | $288K | SEC | |
| Robert Ainscow | Interim CEO and COO | S - Open-market sale [10b5-1] | 25.0K | $5.77 | $144K | SEC | |
| Robert Ainscow | Interim CEO and COO | S - Open-market sale [10b5-1] | 67.5K | $7.51 | $507K | SEC | |
| Paul Elliot Mann | Executive Officer | S - Open-market sale [10b5-1] | 112.5K | $7.51 | $845K | SEC | |
| Todd Wider | Insider | A - Grant or award | 25.5K | - | - | SEC | |
| Robert Ainscow | Interim CEO and COO | S - Open-market sale [10b5-1] | 22.5K | $13.60 | $306K | SEC | |
| Michael Gorley | Insider | S - Open-market sale | 64.0K | $9.75 | $624K | SEC | |
| Todd Wider | Insider | S - Open-market sale | 74.1K | $8.76 | $649K | SEC | |
| Todd Wider | Insider | M - Option exercise | 96.0K | $2.00 | $192K | SEC | |
| Todd Wider | Insider | F - Tax withholding / forfeiture | 21.9K | $8.77 | $192K | SEC | |
| Ralph L. Hunter Jr. | Insider | A - Grant or award | 10.5K | - | - | SEC | |
| Donald George Ainscow | EVP, Gen Counsel, Secretary | A - Grant or award | 400.0K | - | - | SEC | |
| AK Jensen Investment Management Ltd | 10% Owner | A - Grant or award | 30.0K | $3.03 | $91K | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for ASP Isotopes Inc. (ASPI). Updated in real time as new filings are submitted to the SEC.
Most-Active ASPI Insiders - Last 90 Days
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| Robert Ainscow | 2 | - |
| Donald George Ainscow | 2 | - |
| Heather Kiessling | 2 | - |
| Todd Wider | 1 | - |
| Michael Gorley | 1 | - |
Recent ASPI Form 8-K Material Events
- - Item 7.01, 9.01 [SEC]
- - Item 7.01, 9.01 [SEC]
- - Item 7.01, 9.01 [SEC]
- - Item 8.01, 9.01 [SEC]
- - Item 1.01, 3.02, 7.01, 9.01 [SEC]
Recent ASPI Form 144 Notices of Proposed Sale
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
Recent Insider Filings
- - Heather Kiessling (Chief Financial Officer)
- - Donald George Ainscow (EVP, Gen Counsel, Secretary)
- - Todd Wider (Insider)
- - Michael Gorley (Insider)
- - Robert Ainscow (COO)
Form 4 Transaction Code Reference
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ASPI insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
ASPI Insider Trading - FAQ
- What is the latest insider trade for ASPI?
- ASP Isotopes Inc. (ASPI) had 9 insider filings in the last 90 days, with the most recent on 2026-07-03. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
- How many insiders are buying ASPI stock?
- 0 insider purchases of ASPI were filed in the last 90 days.
- How many insiders are selling ASPI stock?
- 0 insider sales of ASPI were filed in the last 90 days.
- Where can I see ASPI SEC filings (Form 4, 10-K, 10-Q, 8-K)?
- This page tracks ASPI Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Learn More
- What is SEC Form 4?
- How to read insider buying signals
- Rule 10b5-1 trading plans explained
- The cluster buying signal
Open the live ASPI dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.