🕵️ Immuneering Corp ($IMRX)
SEC insider & ownership activity, last 12 months · CIK 1790340 · every row links its SEC filing
Over the last 12 months insiders bought $423K with no open-market selling against it. Feinberg Peter bought $226K (Sep–Jan). Benjamin J. Zeskind trimmed 12.8% → 6.6%. No red-flag 8-Ks in the window.
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Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
8 buyers, $423K (13 lots) · 0 sellers, $0 (0 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Feinberg Peter | 4 | $226K | 0 | – | Jan 12, 2026 |
| Thomas J. Schall | 1 | $101K | 0 | – | Jan 15, 2026 |
| Hall Brett Matthew | 2 | $36K | 0 | – | Jun 15, 2026 |
| Brakewood Harold Eugene | 1 | $25K | 0 | – | Jan 16, 2026 |
| Leah R. Neufeld | 2 | $16K | 0 | – | Jan 13, 2026 |
| Benjamin J. Zeskind | 1 | $11K | 0 | – | Jun 23, 2026 |
| Bookman Michael | 1 | $7K | 0 | – | Oct 1, 2025 |
| Morales Mallory | 1 | $2K | 0 | – | Oct 1, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| FMR LLC | 14.5% | 13G | Oct 7, 2025 | filing ↗ | |
| Abigail P. Johnson | 14.5% | 13G | Oct 7, 2025 | filing ↗ | |
| Martin D. Hoe | 8.8% | 13G | Oct 21, 2025 | filing ↗ | |
| Blackrock, Inc. | 6.7% | Class A | 13G | Jul 28, 2026 | filing ↗ |
| Benjamin J. Zeskind | 6.6% | 13G | Jan 22, 2026 | filing ↗ | |
| HBM Healthcare Investments (CAYMAN) Ltd. | 5.7% | 13G | Oct 3, 2025 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Ann E. Berman | $136K | Sep 23, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Officer/director changes (5.02) | Jun 11, 2026 | filing ↗ |
| Shareholder vote (5.07) | Jun 11, 2026 | filing ↗ |
| Other events (8.01) | Jun 1, 2026 | filing ↗ |
| Earnings (2.02) | May 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 15, 2026 | filing ↗ |
| Earnings (2.02) | Mar 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Mar 6, 2026 | filing ↗ |
| Other events (8.01) | Jan 7, 2026 | filing ↗ |
| Earnings (2.02) | Nov 12, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 12, 2025 | filing ↗ |
| Material agreement (1.01) | Sep 24, 2025 | filing ↗ |
| Other events (8.01) | Sep 24, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 24, 2025 | filing ↗ |
| Material agreement (1.01) | Sep 24, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Sep 24, 2025 | filing ↗ |
| Other events (8.01) | Sep 24, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 24, 2025 | filing ↗ |
| Material agreement (1.01) | Aug 21, 2025 | filing ↗ |
| Unregistered equity sale (3.02) | Aug 21, 2025 | filing ↗ |
| Other events (8.01) | Aug 21, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 21, 2025 | filing ↗ |
| Earnings (2.02) | Aug 13, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 13, 2025 | filing ↗ |