ASP Isotopes Inc is a materials company focused on producing and commercializing enriched isotopes for the nuclear medicine, healthcare, green energy, and quantum computing industries. Currently, the company has three operating segments: (i) nuclear fuels, (ii) specialist isotopes and related services, and (iii) construction services. Using proprietary technology-the Aerodynamic Separation Process (ASP)-the company enriches isotopes in South Africa, targeting high-value, low-volume markets to reduce reliance on foreign supply chains. Geographically, the company operates in South Africa, Hong Kong and United States generating key revenue from the Hong Kong region.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 6 | 308,391 | $1.23M |
40 Form 4 filings on record, the earliest from Oct 16, 2024, newest first. Filing history page 1 of 2.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Robert Ainscow - Officer | Open-market sale | Common Stock | 8,438 | $4.29 | $36K | |
| Donald George Ainscow - Officer | Open-market sale | Common Stock | 23,678 | $3.89 | $92K | |
| Robert Ainscow - Officer | Open-market sale | Common Stock | 25,000 | $3.91 | $98K | |
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 83,758 | $3.91 | $327K | |
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 83,758 | $3.92 | $328K | |
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 83,759 | $4.10 | $343K | |
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 162,153 | $5.75 | $933K | |
| Ralph L. Hunter Jr. | Grant or award | Common Stock | 10,470 | - | - | |
| Robert Ainscow - Officer | Open-market sale | Common Stock | 25,000 | $5.77 | $144K | |
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 112,500 | $7.51 | $845K | |
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 50,000 | $5.77 | $288K | |
| Donald George Ainscow - Officer | Grant or award | Common Stock | 400,000 | - | - | |
| Robert Ainscow - Officer | Open-market sale | Common Stock | 67,500 | $7.51 | $507K |
A Form 144 is notice of an INTENDED sale, not a completed one. It often precedes the Form 4 that reports the trade actually happening.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Mann Paul Elliot | DIRECTOR, OFFICER | 83,758 | $317K | View on EDGAR | |
| Ainscow Robert | OFFICER | 25,000 | $95K | View on EDGAR | |
| Donald George Ainscow | Affiliate | 50,000 | $194K | View on EDGAR |
ASP Isotopes Inc. (ASPI) had 8 insider filings in the last 90 days, with the most recent on 2026-09-11. The full record for ASPI runs to 40 Form 4 filings, the earliest from 2024-10-16. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of ASPI were filed in the last 90 days.
6 insider sales of ASPI were filed in the last 90 days, totaling $1.23M.
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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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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