Peter Feinberg insider trades: Immuneering (IMRX) stock purchases
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Peter reports to the SEC
Open-market buys and sales
12 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jan 12, 2026 | IMRX | ↑ Buy | 20,000 | $4.35 | $87K | General Partner of S4K Investments LLC. | Jan 14, 2026 (2d) |
| Oct 3, 2025 | IMRX | ↑ Buy | 7,500 | $6.67 | $50K | Direct | Oct 7, 2025 (4d) |
| Sep 30, 2025 | IMRX | ↑ Buy | 7,500 | $7.03 | $53K | Direct | Oct 1, 2025 (1d) |
| Sep 29, 2025 | IMRX | ↑ Buy | 5,000 | $7.18 | $36K | Direct | Sep 30, 2025 (1d) |
| Jun 18, 2025 | IMRX | ↑ Buy | 25,000 | $2.53 | $63K | Direct | Jun 23, 2025 (5d) |
| Mar 22, 2024 | IMRX | ↑ Buy | 25,000 | $2.55 | $64K | Direct | Mar 25, 2024 (3d) |
| Mar 19, 2024 | IMRX | ↑ Buy | 75,000 | $2.44 | $183K | Direct | Mar 19, 2024 (0d) |
| Mar 15, 2022 | IMRX | ↑ Buy | 6,667 | $6.75 | $45K | Direct | Mar 16, 2022 (1d) |
| Sep 20, 2021 | IMRX | ↑ Buy | 4,750 | $24.45 | $116K | Direct | Sep 21, 2021 (1d) |
| Sep 13, 2021 | IMRX | ↑ Buy | 5,750 | $21.51 | $124K | General Partner of PF Associates L.P. | Sep 15, 2021 (2d) |
| Sep 13, 2021 | IMRX | ↑ Buy | 349 | $21.25 | $7K | Direct | Sep 15, 2021 (2d) |
| Aug 3, 2021 | IMRX | ↑ Buy | 291,667 | $15.00 | $4.4M | See Foonote | Aug 4, 2021 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other IMRX insiders
Open-market trades in the last 12 months
About Peter Feinberg's insider trades
Peter Feinberg is a director at Immuneering (IMRX). Since Aug 3, 2021, Peter has reported 12 open-market purchases worth $5.2M and no sales on SEC Form 4. In the last 12 months: 1 buy ($87K).
Their filings also include grants and awards (10 filings), conversions (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every IMRX insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.