IMRX Immuneering Corporation
Immuneering Corporation (IMRX) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
Where they traded
Last open-market purchase: June 23, 2026 , by Zeskind Benjamin J. .
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Zeskind Benjamin J. | PRESIDENT AND CEO | Buy | 2,400 | $4.56 | $10.9K | 2,315,252 | |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Buy | 6,035 | $4.15 | $25.0K | 382,531 | |
| Brakewood Harold Eugene | Chief Business Officer | Buy | 5,250 | $4.76 | $25.0K | 11,050 | |
| Schall Thomas J. | Director | Buy | 21,645 | $4.67 | $101.0K | 74,530 | |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Buy | 2,298 | $4.57 | $10.5K | 376,496 | |
| Neufeld Leah R | CHIEF PEOPLE OFFICER | Buy | 2,626 | $4.15 | $10.9K | 25,970 | |
| Feinberg Peter | Director | Buy | 20,000 | $4.35 | $86.9K | 135,441 | |
| Feinberg Peter | Director | Buy | 7,500 | $6.67 | $50.0K | 156,766 | |
| Bookman Michael | CHIEF LEGAL OFFICER, SECRETARY | Buy | 1,020 | $6.83 | $7.0K | 4,870 | |
| Neufeld Leah R | CHIEF PEOPLE OFFICER | Buy | 800 | $6.38 | $5.1K | 23,344 | |
| Morales Mallory | Chief Accounting Officer | Buy | 300 | $6.39 | $1.9K | 27,533 | |
| Feinberg Peter | Director | Buy | 7,500 | $7.03 | $52.7K | 149,266 | |
| Feinberg Peter | Director | Buy | 5,000 | $7.18 | $35.9K | 141,766 |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.