ASP Isotopes Inc. (ASPI)
Data as of , from SEC Form 4 filings.
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Heather Kiessling - OfficerOpen-market sale$48K- Robert Ainscow
About ASP Isotopes Inc. (ASPI)
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.
- DALLAS, TX
- 271
- 2022
- Nasdaq
ASPI Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market purchase | 2 | 23,000 | $62K |
| Open-market sale | 8 | 352,721 | $1.32M |
ASPI insider transactions (Form 4)
1344 Form 4 filings on record, the earliest from Oct 16, 2024, newest first. Filing history page 2 of 2.
| Traded | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Donald George Ainscow - Officer | Grant or award | Common Stock | 400,000 | - footnote F1 | - | |
| ||||||
| Robert Ainscow - Officer | Open-market sale | Common Stock | 25,000 | $5.77 footnote F2 | $144K | |
| ||||||
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 112,500 | $7.51 footnote F2 | $845K | |
| Paul Elliot Mann - Officer | Open-market sale | Common Stock | 50,000 | $5.77 footnote F4 | $288K | |
| ||||||
| Robert Ainscow - Officer | Open-market sale | Common Stock | 67,500 | $7.51 footnote F2 | $507K | |
| ||||||
| Todd Wider | Grant or award | Common Stock | 25,469 | - footnote F1 | - | |
| ||||||
| Robert Ainscow - Officer | Open-market sale | Common Stock | 22,500 | $13.60 footnote F2 | $306K | |
| ||||||
| Todd Wider | Open-market sale | Common Stock | 74,108 | $8.76 footnote F3 | $649K | |
| Todd Wider | Option exercise | Stock Option (right to buy) | 96,000 | $0.00 | - | |
| Todd Wider | Option exercise | Common Stock | 96,000 | $2.00 | $192K | |
| Todd Wider | Tax withholding / forfeiture | Common Stock | 21,892 | $8.77 | $192K | |
| ||||||
| Michael Gorley | Open-market sale | Common Stock | 64,000 | $9.75 footnote F2 | $624K | |
| ||||||
| AK Jensen Investment Management Ltd - 10% Owner | Grant or award | Common Stock, par value $0.01 per share | 30,000 | $3.03 | $91K | |
Recent ASPI Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| Heather Kiessling | Affiliate | 21,830 | $48K | View on EDGAR | |
| Robert Ainscow | Officer | 22,500 |
ASPI insider trading FAQ
What is the latest insider trade for ASPI?
ASP Isotopes Inc. (ASPI) had 8 insider filings in the last 90 days, with the most recent on 22 October 2026. The full record for ASPI runs to 44 Form 4 filings, the earliest from 16 October 2024. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying ASPI stock?
2 insider purchases of ASPI were filed in the last 90 days, totaling $62K.
How many insiders are selling ASPI stock?
8 insider sales of ASPI were filed in the last 90 days, totaling $1.32M.
Where can I see ASPI SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects ASPI Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Materials companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Heather Kiessling view on EDGAR
- - Robert Ainscow view on EDGAR
- - Robert John Andrew Ryan view on EDGAR
- - Robert John Andrew Ryan view on EDGAR
- - Robert Ainscow view on EDGAR
- - Donald George Ainscow view on EDGAR
- - Robert Ainscow view on EDGAR
- - Paul Elliot Mann view on EDGAR
- - Heather Kiessling view on EDGAR
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Learn more
- Insider selling: signal or noise?
- Why most insider sales are routine, and the few patterns worth a second look.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Materials
- Where ASPI's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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