IMRX: Immuneering Corp insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 0 sales totaling - in the last 180 days.
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-07-28 | New 13G stake | BlackRock, Inc. | 6.70% | SEC |
Institutional ownership (Q2 2026)
111 institutions reported holding $160.09M of Immuneering Corp on Form 13F (95 the quarter before). 37 opened a new position and 21 sold out. Shares held by institutions: +18%.
| Largest holders | Shares | Value |
|---|---|---|
| FMR LLC | 9,704,610 | $48.43M |
| BlackRock, Inc. | 4,374,020 | $21.83M |
| Sanofi | 2,708,559 | $13.52M |
| VANGUARD CAPITAL MANAGEMENT LLC | 2,286,434 | $11.41M |
| GEODE CAPITAL MANAGEMENT, LLC | 1,370,750 | $6.84M |
| STATE STREET CORP | 1,001,995 | $5.00M |
| DCF Advisers, LLC | 790,000 | $3.94M |
| MARSHALL WACE, LLP | 731,897 | $3.65M |
| Connor, Clark & Lunn Investment Management Ltd. | 601,255 | $3.00M |
| ALETHEA CAPITAL MANAGEMENT, LLC | 472,935 | $2.36M |
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