ASP Isotopes Inc. Common Stock
ASP Isotopes Inc. Common Stock (ASPI) Insider Trading
Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.
SEC EDGAR · FMP · ASPI · as of Jun 9, 2026
Activity summary
Buy transactions
0
P-Purchase only
Sell transactions
23
12 Months
Buy/Sell ratio
0.00
Buy/Sell (by trades)
Overall sentiment
ASP Isotopes Inc. Common Stock insiders have been primarily selling shares over the past 12 Months. Selling activity is often driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment toward the company.
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only
As of Jun 9, 2026
ASPI insider buying and selling by quarter
ASPI insider selling · ASPI insider buying stocks · quarterly insider activity
Mobile shows last 4Q · Desktop shows full 8Q
▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters
As of Jun 9, 2026
Active insiders
Most active in past 12 months · ASPI ceo insider trading
Showing all insiders · Click a card to filter the transactions table below
▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API
Recent insider transactions
ASPI executive sell shares · ASPI board member insider trading · ASPI insider trading SEC filing
Scroll horizontally to see all columns
| Date | Insider | Type | Shares | Value | Filing |
|---|---|---|---|---|---|
| May 28, 2026 | Mann Paul Elliot Chairman and CEO · Director | Award | 2,233,555 | — | Form 4 |
| Jun 1, 2026 | Mann Paul Elliot Chairman and CEO · Director | Sale | 83,758 | $660K | Form 4 |
| Jun 2, 2026 | Mann Paul Elliot Chairman and CEO · Director | Sale | 83,758 | $694K | Form 4 |
| Jun 3, 2026 | Mann Paul Elliot Chairman and CEO · Director | Sale | 83,759 | $650K | Form 4 |
| May 28, 2026 | Ainscow Robert COO | Award | 800,000 | — | Form 4 |
| May 28, 2026 | Ainscow Donald George EVP, Gen Counsel, Secretary | Award | 400,000 | — | Form 4 |
| May 28, 2026 | Kiessling Heather CFO | Award | 840,000 | — | Form 4 |
| Apr 16, 2026 | Ainscow Robert COO | Sale | 22,500 | $117K | Form 4 |
| Apr 15, 2026 | Kiessling Heather CFO | Sale | 23,124 | $127K | Form 4 |
| Dec 18, 2025 | Moore Duncan Director | Award | 36,548 | — | Form 4 |
| Apr 16, 2026 | Moore Duncan Director | Sale | 11,642 | $61K | Form 4 |
| Nov 12, 2025 | Moore Duncan Director | Award | 25,469 | — | Form 4 |
| Mar 6, 2026 | Ainscow Robert COO | Sale | 25,000 | $113K | Form 4 |
| Mar 6, 2026 | Ainscow Robert COO | Sale | 8,438 | $46K | Form 4 |
| Mar 2, 2026 | Mann Paul Elliot Executive Chairman | Sale | 162,153 | $881K | Form 4 |
| Dec 18, 2025 | Kiessling Heather CFO | Sale | 80,000 | $464K | Form 4 |
| Dec 18, 2025 | Wider Todd Director | Award | 36,548 | — | Form 4 |
| Dec 18, 2025 | Ryan Robert John Andrew Director | Award | 36,548 | — | Form 4 |
| Dec 18, 2025 | Hunter Ralph L. JR Director | Award | 36,548 | — | Form 4 |
| Dec 18, 2025 | Gorley Michael Director | Award | 36,548 | — | Form 4 |
| Dec 8, 2025 | Ainscow Robert Interim CEO and COO | Sale | 8,438 | $52K | Form 4 |
| Dec 1, 2025 | Mann Paul Elliot Executive Chairman · Director | Sale | 162,153 | $933K | Form 4 |
| Sep 6, 2025 | Hunter Ralph L. JR Director | Award | 10,470 | — | Form 4 |
| Aug 1, 2025 | Ainscow Donald George EVP, Gen Counsel, Secretary | Award | 400,000 | — | Form 4 |
| Nov 25, 2025 | Ainscow Robert Interim CEO and COO | Sale | 25,000 | $144K | Form 4 |
Mann Paul Elliot
Chairman and CEO · Director
Date
May 28
Shares
2,233,555
Price
—
Value
—
Mann Paul Elliot
Chairman and CEO · Director
Date
Jun 1
Shares
83,758
Price
$7.88
Value
$660K
Mann Paul Elliot
Chairman and CEO · Director
Date
Jun 2
Shares
83,758
Price
$8.29
Value
$694K
Mann Paul Elliot
Chairman and CEO · Director
Date
Jun 3
Shares
83,759
Price
$7.76
Value
$650K
Ainscow Donald George
EVP, Gen Counsel, Secretary
Date
May 28
Shares
400,000
Price
—
Value
—
Mann Paul Elliot
Executive Chairman
Date
Mar 2
Shares
162,153
Price
$5.44
Value
$881K
Mann Paul Elliot
Executive Chairman · Director
Date
Dec 1
Shares
162,153
Price
$5.75
Value
$933K
Ainscow Donald George
EVP, Gen Counsel, Secretary
Date
Aug 1
Shares
400,000
Price
—
Value
—
Ainscow Robert
Interim CEO and COO
Date
Nov 25
Shares
25,000
Price
$5.77
Value
$144K
⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar
▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —
About ASPI insider trading
ASPI insider trades
ASP Isotopes Inc. Common Stock (ASPI) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Ainscow Robert (COO), Mann Paul Elliot (Chairman and CEO · Director), Wider Todd (Director). Over the past 12 months, 5 insiders have filed transactions with the SEC. ASPI insiders have been primarily selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.
For ASP Isotopes Inc. Common Stock's institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →
Frequently asked questions
ASPI insider trading · 5 questionsThe insiders of ASP Isotopes Inc. Common Stock (ASPI) include executives and directors such as Ainscow Robert (COO), Mann Paul Elliot (Chairman and CEO · Director), Wider Todd (Director), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.
▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 9, 2026