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.
MapLight Therapeutics, Inc. (MPLT): Insider Trades and Fund Holdings
In the past 12 months, MapLight Therapeutics, Inc. insiders reported 5 open-market purchases worth $65.5M and 26 sales worth $12.7M; 11 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 15, 2026Insider saleCEO Christopher A. Kroeger sold $595,423
- Oct 15, 2026Insider saleChief Medical Officer Erin Pennock Foff sold $124,068
- Oct 15, 2026Insider saleChief Discovery Officer Anatol Kreitzer sold $96,024
- Oct 15, 2026Insider saleChief Scientific Officer James Woodruff Lillie sold $93,025
- Oct 15, 2026Insider saleCFO Jonathan Gillis sold $82,149
- Oct 15, 2026Insider saleGeneral Counsel Kristopher Hanson sold $72,882
- Oct 15, 2026Planned saleKroeger Christopher A. (officer) filed notice to sell about $575,527 around Oct 15, 2026
- Oct 15, 2026Planned saleFoff Erin Pennock (officer) filed notice to sell about $119,923 around Oct 15, 2026
- Oct 15, 2026Planned saleROBERT MALENKA (director) filed notice to sell about $115,658 around Oct 15, 2026
- Oct 15, 2026Planned saleAnatol Kreitzer (officer) filed notice to sell about $97,625 around Oct 15, 2026
- Oct 15, 2026Planned saleLillie James Woodruff (officer) filed notice to sell about $89,917 around Oct 15, 2026
- Oct 15, 2026Planned saleGILLIS JONATHAN (officer) filed notice to sell about $79,404 around Oct 15, 2026
- Oct 15, 2026Planned saleHanson Kristopher (officer) filed notice to sell about $70,446 around Oct 15, 2026
- Sep 16, 2026Insider saleGeneral Counsel Kristopher Hanson sold $192,660 under a 10b5-1 plan
- Sep 16, 2026Planned saleHanson Kristopher (officer) filed notice to sell about $199,429 around Sep 16, 2026
- Aug 14, 2026Insider buy10% owner Catalyst4, Inc. bought $50.1 million (1 days after: signed a material agreement)
- Aug 13, 2026NewsCompany reported: Signed a material agreement; Quarterly or annual results
- Aug 3, 2026Insider saleChief Scientific Officer James Woodruff Lillie sold $276,908 under a 10b5-1 plan
- Aug 3, 2026Planned saleLillie James Woodruff (officer) filed notice to sell about $287,508 around Aug 3, 2026
- Jul 30, 2026Insider buy10% owner Catalyst4, Inc. bought $13 million
- Jul 30, 2026Planned saleNovo Holdings A/S (former affiliate) filed notice to sell about $24 million around Jul 30, 2026
- Jul 29, 2026Insider buy10% owner Catalyst4, Inc. bought $37,890
- Jul 28, 2026Insider buy10% owner Catalyst4, Inc. bought $2.3 million
- Jul 28, 2026Insider buyDirector Troy Cox bought $148,702
- Jul 17, 2026Insider saleCFO Jonathan Gillis sold $694,463 under a 10b5-1 plan
- Jul 17, 2026Insider saleChief Discovery Officer Anatol Kreitzer sold $645,719 under a 10b5-1 plan
- Jul 17, 2026Insider saleCEO Christopher A. Kroeger sold $635,924
- Jul 17, 2026Insider saleChief Medical Officer Erin Pennock Foff sold $138,562 under a 10b5-1 plan
- Jul 17, 2026Insider saleChief Scientific Officer James Woodruff Lillie sold $78,718
- Jul 17, 2026Insider saleGeneral Counsel Kristopher Hanson sold $42,827
- Jul 16, 2026Insider saleChief Discovery Officer Anatol Kreitzer sold $333,234 under a 10b5-1 plan
- Jul 16, 2026Insider saleCFO Jonathan Gillis sold $311,111 under a 10b5-1 plan
- Jul 16, 2026Insider saleCEO Christopher A. Kroeger sold $2.5 million
- Jul 16, 2026Insider saleChief Medical Officer Erin Pennock Foff sold $553,334 under a 10b5-1 plan
- Jul 16, 2026Insider saleChief Scientific Officer James Woodruff Lillie sold $314,413
- Jul 16, 2026Insider saleGeneral Counsel Kristopher Hanson sold $298,616
- Jul 15, 2026Insider saleCFO Jonathan Gillis sold $367,093 under a 10b5-1 plan
- Jul 15, 2026Insider saleChief Discovery Officer Anatol Kreitzer sold $366,940 under a 10b5-1 plan
- Jul 15, 2026Insider saleCEO Christopher A. Kroeger sold $2.3 million
- Jul 15, 2026Insider saleChief Medical Officer Erin Pennock Foff sold $1 million under a 10b5-1 plan
Showing the latest 40 of 43 events.
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 16, 2026.
| Filed | Insider | Type | Value | Score |
|---|---|---|---|---|
| Oct 16 | Christopher A. KroegerCEO | ▼ SELL | $595K | |
| Oct 16 | Erin Pennock FoffChief Medical Officer | ▼ SELL | $124K | |
| Oct 16 | Anatol KreitzerChief Discovery Officer | ▼ SELL | $96K | |
| Oct 16 | James Woodruff LillieChief Scientific Officer | ▼ SELL | $93K | |
| Oct 16 | Jonathan GillisCFO | ▼ SELL | $82K | |
| Oct 16 | Kristopher HansonGeneral Counsel | ▼ SELL | $73K | |
| Sep 18 | Kristopher HansonGeneral Counsel | ▼ SELL10b5-1 | $193K | |
| Aug 18 | Catalyst4, Inc.10% owner | ▲ BUY | $50.1M | 47 |
| Aug 4 | James Woodruff LillieChief Scientific Officer | ▼ SELL10b5-1 | $277K | |
| Jul 30 | Catalyst4, Inc.10% owner | ▲ BUY | $13.0M | 38 |
Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| Christopher A. Kroeger | CEO | 0 | $0 | 4 | $6.04M |
| Erin Pennock Foff | Chief Medical Officer | 0 | $0 | 4 | $1.86M |
| Anatol Kreitzer | Chief Discovery Officer | 0 | $0 | 4 | $1.44M |
| James Woodruff Lillie | Chief Scientific Officer | 0 | $0 | 5 | $1.04M |
| Jonathan Gillis | CFO | 0 | $0 | 4 | $1.45M |
| Kristopher Hanson | General Counsel | 0 | $0 | 5 | $873K |
| Catalyst4, Inc. | 10% owner | 4 | $65.4M | 0 | $0 |
| Troy Cox | Director | 1 | $149K | 0 | $0 |
47 Catalyst4, Inc. (10% owner), 2026-08-14. What the score means
A 2 of 31 insider trades reported after the deadline. How it is graded
Tracked funds that report MPLT
From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.
| Fund | Shares | Value | Change |
|---|---|---|---|
| Renaissance Technologies | 6,937 | $249K | ▲ New |
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 →