About this page
Insider trades reported on SEC Form 4: when the people who run a company buy or sell its shares with their own money.
How to read it
- Form 4
- The form a company insider (officer, director or owner of more than 10%) must file with the SEC within two business days of buying or selling the company's shares.
- Buy (P) and Sell (S)
- Open-market purchases and sales. Gifts, option exercises and automatic tax withholding are left out because they say little about what the insider thinks.
- Value
- Shares times price, as reported on the filing.
- 10b5-1
- A trade made under a plan set up in advance. Planned sales are common and usually say less than an unplanned purchase.
- Late filing
- A Form 4 filed more than two business days after the trade.
- Vs. S&P 500
- How the stock did after the trade minus how the overall market did in the same weeks.
A real example
In January 2016, when bank stocks were falling, JPMorgan Chase CEO Jamie Dimon bought 500,000 JPMorgan shares with his own money, worth about $26 million. His Form 4 made the purchase public within days, and investors read it as a strong sign of confidence.
Explain it like I'm 13
If the coach of a team bets his own allowance that his team will win, that tells you something. A Form 4 is the note a company boss must hand in whenever he buys or sells his own company's shares, so everyone can see it.
Data from public SEC filings and congressional reports. Information, not investment advice. Check every number against the filing linked on the page.
ASP Isotopes Inc. (ASPI): Insider Trades and Fund Holdings
In the past 12 months, ASP Isotopes Inc. insiders reported 2 open-market purchases worth $62K and 13 sales worth $2.89M; 7 of the sales were reported as made under a 10b5-1 trading plan.
Timeline: news and trades
Company filings (8-K), insider trades, notices of planned sales (Form 144), Congress trades and fund moves in the past year, newest first.
- Oct 16, 2026Insider saleCFO Heather Kiessling sold $47,808
- Oct 16, 2026Planned saleHeather Kiessling (affiliate) filed notice to sell about $47,975 around Oct 16, 2026
- Oct 14, 2026Insider saleCOO Robert Ainscow sold $47,565 under a 10b5-1 plan
- Oct 14, 2026Planned saleAinscow Robert (officer) filed notice to sell about $46,575 around Oct 14, 2026
- Sep 30, 2026Insider buyDirector Robert John Andrew Ryan bought $40,200
- Sep 28, 2026Insider buyDirector Robert John Andrew Ryan bought $21,600
- Sep 25, 2026Planned saleTodd Wider (director) filed notice to sell about $590,000 around Sep 25, 2026
- Sep 8, 2026Insider saleCOO Robert Ainscow sold $36,216 under a 10b5-1 plan
- Sep 4, 2026Insider saleCEO Paul Elliot Mann sold $343,412 under a 10b5-1 plan
- Sep 3, 2026Insider saleCEO Paul Elliot Mann sold $328,331 under a 10b5-1 plan
- Sep 2, 2026Insider saleCEO Paul Elliot Mann sold $327,494 under a 10b5-1 plan
- Sep 2, 2026Insider saleCOO Robert Ainscow sold $97,625 under a 10b5-1 plan
- Sep 2, 2026Insider saleEVP Donald George Ainscow sold $92,107
- Sep 2, 2026Planned saleMann Paul Elliot (director, officer) filed notice to sell about $949,819 around Sep 2, 2026
- Sep 2, 2026Planned saleDonald George Ainscow (affiliate) filed notice to sell about $194,391 around Sep 2, 2026
- Sep 2, 2026Planned saleAinscow Robert (officer) filed notice to sell about $126,396 around Sep 2, 2026
- Aug 20, 2026NewsCompany reported: Signed a material agreement
- Aug 4, 2026NewsCompany reported: Quarterly or annual results
- Jul 1, 2026Insider saleCFO Heather Kiessling sold $145,219 under a 10b5-1 plan
- Jun 30, 2026Insider saleEVP Donald George Ainscow sold $614,000
- Jun 30, 2026Insider saleDirector Todd Wider sold $306,000
- Jun 30, 2026Insider saleDirector Michael Gorley sold $188,100
- Jun 29, 2026Insider saleDirector Todd Wider sold $312,500
Recent insider trades
Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 21, 2026.
| Filed | Insider | Type | Value | Score |
|---|---|---|---|---|
| Oct 21 | Heather KiesslingCFO | ▼ SELL | $48K | |
| Oct 16 | Robert AinscowCOO | ▼ SELL10b5-1 | $48K | |
| Oct 1 | Robert John Andrew RyanDirector | ▲ BUY | $40K | 29 |
| Sep 30 | Robert John Andrew RyanDirector | ▲ BUY | $22K | 26 |
| Sep 10 | Robert AinscowCOO | ▼ SELL10b5-1 | $36K | |
| Sep 4 | Paul Elliot MannCEO | ▼ SELL10b5-1 | $343K | |
| Sep 4 | Paul Elliot MannCEO | ▼ SELL10b5-1 | $328K | |
| Sep 4 | Paul Elliot MannCEO | ▼ SELL10b5-1 | $327K | |
| Sep 4 | Robert AinscowCOO | ▼ SELL10b5-1 | $98K | |
| Sep 4 | Donald George AinscowEVP | ▼ SELL | $92K |
Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Heather Kiessling | CFO | 0 | $0 | 2 | $193K |
| Robert Ainscow | COO | 0 | $0 | 3 | $181K |
| Robert John Andrew Ryan | Director | 2 | $62K | 0 | $0 |
| Paul Elliot Mann | CEO | 0 | $0 | 3 | $999K |
| Donald George Ainscow | EVP | 0 | $0 | 2 | $706K |
| Todd Wider | Director | 0 | $0 | 2 | $619K |
| Michael Gorley | Director | 0 | $0 | 1 | $188K |
29 Robert John Andrew Ryan (Director), 2026-09-30. What the score means
A 1 of 15 insider trades reported after the deadline. How it is graded
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →