Immuneering Corp — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Feinberg Peter | — | Purchase | 7,500 | $6.67 | $50,025 | 156,766 | Oct 3, 2025 |
| Morales Mallory | Chief Accounting Officer | Purchase | 300 | $6.39 | $1,917 | 27,533 | Oct 1, 2025 |
| Neufeld Leah R | CHIEF PEOPLE OFFICER | Purchase | 800 | $6.38 | $5,104 | 23,344 | Oct 1, 2025 |
| Bookman Michael | CHIEF LEGAL OFFICER, SECRETARY | Purchase | 1,020 | $6.83 | $6,967 | 4,870 | Oct 1, 2025 |
| Feinberg Peter | — | Purchase | 7,500 | $7.03 | $52,725 | 149,266 | Sep 30, 2025 |
| Feinberg Peter | — | Purchase | 5,000 | $7.18 | $35,900 | 141,766 | Sep 29, 2025 |
| Morales Mallory | Chief Accounting Officer | Award / Grant | 14,497 | $1.43 | $20,731 | 27,233 | Sep 15, 2025 |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Award / Grant | 14,880 | $1.43 | $21,278 | 374,198 | Sep 15, 2025 |
| Neufeld Leah R | CHIEF PEOPLE OFFICER | Award / Grant | 11,815 | $1.43 | $16,895 | 22,544 | Sep 15, 2025 |
| HAUSMAN DIANA | — | Purchase | 3,000 | $3.62 | $10,860 | 3,000 | Jul 2, 2025 |
| Neufeld Leah R | CHIEF PEOPLE OFFICER | Purchase | 700 | $3.57 | $2,499 | 10,729 | Jul 2, 2025 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Purchase | 2,985 | $3.38 | $10,089 | 2,305,837 | Jul 2, 2025 |
| Schall Thomas J. | — | Purchase | 9,500 | $3.66 | $34,770 | 52,885 | Jun 27, 2025 |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Purchase | 6,007 | $2.43 | $14,597 | 359,318 | Jun 20, 2025 |
| Brakewood Harold Eugene | Chief Business Officer | Purchase | 1,900 | $2.53 | $4,807 | 5,800 | Jun 20, 2025 |
| Feinberg Peter | — | Purchase | 25,000 | $2.53 | $63,250 | 136,766 | Jun 18, 2025 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Purchase | 21,000 | $2.39 | $50,190 | 2,302,852 | Jun 18, 2025 |
| Schall Thomas J. | — | Purchase | 40,485 | $2.21 | $89,472 | 43,385 | Jun 17, 2025 |
| Morales Mallory | Chief Accounting Officer | Award / Grant | 4,458 | $1.62 | $7,222 | 12,736 | Sep 15, 2024 |
| Cormorant Private Healthcare Fund III LP | — | Sale | 100 | $3.05 | $305 | 3,294,773 | Apr 1, 2024 |
| Schall Thomas J. | — | Purchase | 2,900 | $2.55 | $7,395 | 2,900 | Mar 22, 2024 |
| Feinberg Peter | — | Purchase | 25,000 | $2.55 | $63,750 | 111,766 | Mar 22, 2024 |
| Brakewood Harold Eugene | Chief Business Officer | Purchase | 3,900 | $2.57 | $10,023 | 3,900 | Mar 22, 2024 |
| Morales Mallory | Chief Accounting Officer | Award / Grant | 4,344 | $1.62 | $7,037 | 6,778 | Mar 22, 2024 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Purchase | 20,000 | $2.77 | $55,400 | 2,281,852 | Mar 19, 2024 |
| BERMAN ANN E | — | Purchase | 57,965 | $2.13 | $123,465 | 67,465 | Mar 18, 2024 |
| Feinberg Peter | — | Purchase | 45,024 | $2.31 | $104,005 | 56,790 | Mar 18, 2024 |
| Neufeld Leah R | CHIEF PEOPLE OFFICER | Purchase | 3,818 | $2.88 | $10,996 | 10,029 | Mar 15, 2024 |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Purchase | 7,000 | $2.86 | $20,020 | 345,896 | Mar 15, 2024 |
| Bookman Michael | CHIEF LEGAL OFFICER, SECRETARY | Award / Grant | 1,448 | $1.62 | $2,346 | 3,850 | Mar 15, 2024 |
| Cormorant Global Healthcare Master Fund, LP | — | Sale | 345,266 | $3.24 | $1,118,662 | 3,859,098 | Mar 14, 2024 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Option Exercise | 2,500 | $3.01 | $7,525 | 2,261,852 | Dec 22, 2022 |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Purchase | 2,551 | $3.92 | $10,000 | 332,685 | May 25, 2022 |
| Bookman Michael | GENERAL COUNSEL AND SECRETARY | Purchase | 1,000 | $4.88 | $4,880 | 2,402 | May 17, 2022 |
| KEATING LAURIE | — | Purchase | 7,000 | $5.00 | $35,000 | 14,000 | May 16, 2022 |
| Amin Biren | CFO, TREASURER | Purchase | 1,000 | $4.42 | $4,420 | 7,898 | May 12, 2022 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Option Exercise | 2,000 | $3.01 | $6,020 | 2,259,352 | Apr 12, 2022 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Purchase | 3,000 | $8.02 | $24,060 | 2,257,352 | Mar 23, 2022 |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Purchase | 1,050 | $7.91 | $8,306 | 330,134 | Mar 23, 2022 |
| Barrett Scott | CHIEF MEDICAL OFFICER | Purchase | 900 | $7.49 | $6,741 | 7,563 | Mar 22, 2022 |
| Feinberg Peter | — | Purchase | 6,667 | $6.75 | $45,002 | 11,766 | Mar 15, 2022 |
| BERMAN ANN E | — | Purchase | 6,000 | $6.40 | $38,400 | 9,500 | Mar 15, 2022 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Option Exercise | 2,000 | $3.01 | $6,020 | 2,254,352 | Feb 28, 2022 |
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | Award / Grant | 322,691 | — | — | 329,084 | Dec 22, 2021 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Gift | 350,000 | — | — | 2,252,352 | Oct 22, 2021 |
| Feinberg Peter | — | Purchase | 4,750 | $24.45 | $116,138 | 5,099 | Sep 20, 2021 |
| Feinberg Peter | — | Purchase | 5,750 | $21.51 | $123,683 | 392,242 | Sep 13, 2021 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | Purchase | 2,083 | $22.87 | $47,638 | 2,602,352 | Sep 13, 2021 |
| Cormorant Asset Management, LP | — | Purchase | 550,000 | $15.00 | $8,250,000 | 2,252,628 | Aug 3, 2021 |
| Feinberg Peter | — | Purchase | 33,333 | $15.00 | $499,995 | 115,441 | Aug 3, 2021 |