Thompson Peter A.
SEC Form 4 insider trading activity
Thompson Peter A. has filed 11 SEC Form 4 filings (33 transaction rows) across 2 companies, including SION, CRVS, with disclosures dating back to 2025. 11 of those filings fall inside the rolling window. Most recent filing: Jul 9, 2026.
On the most recent filing, Thompson Peter A. is listed as Director at Sionna Therapeutics, Inc. Inside the rolling window, Thompson Peter A. reported no open-market purchases and 20 open-market sales totaling $55.7M in SION. The largest disclosed transaction in the window is a sale of 235,863 SION shares on Apr 15, 2026, worth $10.5M.
Companies traded
Other insiders at SION
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$55.7M
reported sales (SEC code S)
Companies
2
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| SION | Director | Sale | 85,918 | $3.9M | Jul 9 | SEC ↗ | |
| SION | Director | Sale | 115,844 | $5.3M | Jul 2 | SEC ↗ | |
| SION | Director | Sale | 101 | $4K | May 30 | SEC ↗ | |
| SION | Director | Sale | 48,546 | $2.2M | May 11 | SEC ↗ | |
| SION | Director | Sale | 59,767 | $2.7M | May 11 | SEC ↗ | |
| SION | Director | Sale | 184,639 | $8.5M | May 11 | SEC ↗ | |
| SION | Director | Sale | 52,397 | $2.3M | Apr 21 | SEC ↗ | |
| SION | Director | Sale | 2,948 | $131K | Apr 21 | SEC ↗ | |
| SION | Director | Sale | 47,814 | $2.1M | Apr 16 | SEC ↗ | |
| SION | Director | Sale | 235,863 | $10.5M | Apr 16 | SEC ↗ | |
| SION | Director | Sale | 226,906 | $10.3M | Apr 16 | SEC ↗ | |
| SION | Director | Sale | 1,890 | $84K | Feb 4 | SEC ↗ | |
| SION | Director | Sale | 29,063 | $1.3M | Feb 4 | SEC ↗ | |
| SION | Director | Sale | 33,356 | $1.5M | Dec 29 | SEC ↗ | |
| SION | Director | Sale | 900 | $40K | Dec 19 | SEC ↗ | |
| SION | Director | Sale | 100 | $4K | Dec 19 | SEC ↗ | |
| SION | Director | Sale | 875 | $39K | Dec 19 | SEC ↗ | |
| SION | Director | Sale | 94,583 | $4.2M | Nov 26 | SEC ↗ | |
| SION | Director | Sale | 11,890 | $530K | Nov 26 | SEC ↗ | |
| SION | Director | Sale | 1,600 | $71K | Nov 26 | SEC ↗ |
Frequently asked questions
How many SEC Form 4 filings has Thompson Peter A. made?
Thompson Peter A. has filed 11 SEC Form 4 filings (33 transaction rows) across 2 companies, including SION, CRVS since 2025.
Which companies does Thompson Peter A. trade?
Thompson Peter A. has filed SEC Form 4 disclosures for 2 companies, including SION, CRVS.
When was Thompson Peter A.'s most recent SEC Form 4 filing?
Thompson Peter A.'s most recent SEC Form 4 filing on Tracefour is dated Jul 9, 2026.
What is Thompson Peter A.'s total buy and sell value in the current window?
Inside the rolling retention window, Thompson Peter A. bought $0 and sold $55.7M based on SEC Form 4 filings.
What was Thompson Peter A.'s largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 235,863 SION shares on 2026-04-15, worth $10.5M, per SEC Form 4 filings.