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.
Amylyx Pharmaceuticals, Inc. (AMLX): Insider Trades and Fund Holdings
In the past 12 months, Amylyx Pharmaceuticals, Inc. insiders reported no open-market purchases and 8 sales worth $4.31M; 3 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 5, 2026Insider saleDirector George M. Milne Jr sold $830,904 under a 10b5-1 plan
- Oct 5, 2026Planned saleGEORGE MILNE (director) filed notice to sell about $2.8 million around Oct 5, 2026
- Sep 11, 2026Planned saleCohen Joshua B (officer, director) filed notice to sell about $980,504 around Sep 10, 2026
- Sep 11, 2026Planned saleKlee Justin B. (officer, director) filed notice to sell about $980,264 around Sep 10, 2026
- Sep 11, 2026Planned saleFrates James M (officer) filed notice to sell about $349,821 around Sep 10, 2026
- Sep 11, 2026Planned saleBedrosian Camille L (officer) filed notice to sell about $324,868 around Sep 10, 2026
- Sep 11, 2026Planned saleMazzariello Gina (officer) filed notice to sell about $309,506 around Sep 10, 2026
- Sep 10, 2026Insider saleCEO Joshua B. Cohen sold $980,504 (2 days after: signed a material agreement)
- Sep 10, 2026Insider saleCEO Justin B. Klee sold $980,263 (2 days after: signed a material agreement)
- Sep 10, 2026Insider saleCFO James M. Frates sold $349,821 (2 days after: signed a material agreement)
- Sep 10, 2026Insider saleChief Medical Officer Camille L. Bedrosian sold $324,868 (2 days after: signed a material agreement)
- Sep 10, 2026Insider saleGeneral Counsel Gina Mazzariello sold $309,507 (2 days after: signed a material agreement)
- Sep 8, 2026NewsCompany reported: Signed a material agreement
- Aug 20, 2026NewsCompany reported: Signed a material agreement
- Aug 6, 2026NewsCompany reported: Quarterly or annual results
- Jul 10, 2026Insider saleGeneral Counsel Gina Mazzariello sold $264,122 under a 10b5-1 plan
- Jul 9, 2026Insider saleGeneral Counsel Gina Mazzariello sold $274,746 under a 10b5-1 plan
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 7, 2026.
| Filed | Insider | Type | Value |
|---|---|---|---|
| Oct 7 | George M. Milne JrDirector | ▼ SELL10b5-1 | $831K |
| Sep 14 | Joshua B. CohenCEO | ▼ SELL | $981K |
| Sep 14 | Justin B. KleeCEO | ▼ SELL | $980K |
| Sep 14 | James M. FratesCFO | ▼ SELL | $350K |
| Sep 14 | Camille L. BedrosianChief Medical Officer | ▼ SELL | $325K |
| Sep 14 | Gina MazzarielloGeneral Counsel | ▼ SELL | $310K |
| Jul 13 | Gina MazzarielloGeneral Counsel | ▼ SELL10b5-1 | $275K |
| Jul 13 | Gina MazzarielloGeneral Counsel | ▼ SELL10b5-1 | $264K |
Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| George M. Milne Jr | Director | 0 | $0 | 1 | $831K |
| Joshua B. Cohen | CEO | 0 | $0 | 1 | $981K |
| Justin B. Klee | CEO | 0 | $0 | 1 | $980K |
| James M. Frates | CFO | 0 | $0 | 1 | $350K |
| Camille L. Bedrosian | Chief Medical Officer | 0 | $0 | 1 | $325K |
| Gina Mazzariello | General Counsel | 0 | $0 | 3 | $848K |
A All 8 insider trades reported on time. 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 →