As of November 10, 2026, Immuneering Corp is a publicly traded company (Nasdaq: IMRX); its largest reported holder is Fidelity (FMR), with 14.5% on Schedule 13G of October 7, 2025, then BlackRock (6.7%). The largest insider holding is Benjamin J. Zeskind, the chief executive and president, with 3,210,179 shares (12.4% of shares outstanding), per Form 4 of June 24, 2026 (Schedule 13G, October 7, 2025).
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Is Immuneering Corp a real, registered company?
- Immuneering Corp files with the SEC under CIK 1790340 (its SEC filings).
- Its shares are listed under the ticker IMRX on Nasdaq (SEC company record).
- Incorporated in Delaware; business address in Cambridge, Massachusetts, as its SEC filings state.
- Court and bankruptcy records: see Before you sign or pay below.
Before you sign or pay
- Court and bankruptcy: No federal court case or bankruptcy filing found under Immuneering Corp in our court records and SEC 8-K records (as of 2026-11-10).
- Leadership changes: the latest reported is Grant C. Bogle (Form 8-K filed 2026-11-09). Check you are dealing with the people now in charge.
- Ownership: 5%+ holders are reported on Schedule 13D or 13G; the latest names BlackRock (filed 2026-07-28).
Who are Immuneering Corp's owners and officers?
Immuneering Corp: incorporated in Delaware; business address in Cambridge, Massachusetts; industry Pharmaceutical Preparations (Form D, 2026-11-09).
Officers and directors, each with the role and the filing that names them:
- : Executive Officer, Director (Form D, 2025-09-09)
- : Director (Form D, 2025-09-09)
- : Director (Form D, 2025-09-09)
- : Director (Form D, 2025-09-09)
- : Director (Form D, 2025-09-09)
- : Director (Form D, 2025-09-09)
| Report | Holder | Share |
|---|---|---|
| Schedule 13G, 2026-07-28 | Blackrock, Inc. | 6.7% |
| Schedule 13G/A, 2026-01-22 | Benjamin J. Zeskind | 6.6% |
| Schedule 13G/A, 2026-01-15 | Empery Asset Management, LP | 4.99% |
| Schedule 13G, 2025-10-21 | Empery Asset Management, LP | 8.83% |
| Schedule 13G, 2025-10-07 | Fmr LLC | 14.5% |
| Schedule 13G, 2025-10-03 | Hbm Healthcare Investments (Cayman) LTD. | 5.7% |
Questions about who owns Immuneering Corp
Who owns Immuneering Corp?
On this page, 4 holders' latest ownership filings report 5% or more of Immuneering Corp: Fmr LLC (14.5%, Schedule 13G, filed 2025-10-07), Blackrock, Inc. (6.7%, Schedule 13G, filed 2026-07-28), Benjamin J. Zeskind (6.6%, Schedule 13G/A, filed 2026-01-22) and Hbm Healthcare Investments (Cayman) LTD. (5.7%, Schedule 13G, filed 2025-10-03).
Who are the largest shareholders of Immuneering Corp?
By the share each holder's latest filing reports, the largest holders of Immuneering Corp on this page are Fmr LLC (14.5%), Blackrock, Inc. (6.7%) and Benjamin J. Zeskind (6.6%).
When did Fmr LLC buy into Immuneering Corp?
The filings give report dates, not purchase dates. The earliest filing from Fmr LLC on this page is the Schedule 13G, filed 2025-10-07, reporting 14.5%.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 6 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
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What They Do, And How The Money Works
Who Runs It, And How To Reach Them
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| Filed | Person | Role | Change | Effective |
|---|---|---|---|---|
| Form 8-K, 2026-11-09 | Grant C. Bogle | appointed | ||
| Form 8-K, 2026-06-15 | Andrew Gengos | Chief Financial Officer | appointed | |
| Form 8-K, 2026-06-15 | Andrew Gengos | appointed |
Which insiders own Immuneering Corp shares?
Directors, officers and holders of 10% or more report their shares on Forms 3, 4 and 5. Each line is the latest such report, largest holding first.
- , the chief executive and president: 3,210,179 shares (12.4% of shares outstanding), 2,315,252 held directly and 894,927 indirectly (Form 4, 2026-06-24).
- , a director: 1,161,064 shares (4.5% of shares outstanding), 156,766 held directly and 1,004,298 indirectly (Form 4, 2026-01-14).
- , the chief scientific officer: 382,531 shares (1.5% of shares outstanding) (Form 4, 2026-06-16).
- , the chief financial officer: 225,000 shares (0.87% of shares outstanding) (Form 3, 2026-07-16).
- , a director: 74,530 shares (0.29% of shares outstanding) (Form 4, 2026-01-20).
Shares outstanding: 25,938,064 as of 2021-09-03, from the company's latest SEC cover page.
How much has Immuneering Corp raised?
| Filed | Sold | Offered |
|---|---|---|
| Form D, 2025-09-09 | $25M | $25M |
Keep reading
More on Immuneering Corp and the records around it.
Immuneering Corp elsewhere on the record
- Leadership changes Jun 2026
- Form D filing Sep 2025
Companies that share a holder
- HBM Healthcare Investments (Cayman) Ltd. also filed stake reports on 7 other companies: Chemomab Therapeutics Ltd. (Sep 2026), ALX ONCOLOGY HOLDINGS INC (May 2026), IO Biotech, Inc. (Apr 2026)
- Empery Asset Management, LP also filed stake reports on 21 other companies: Dyadic International Inc. (Oct 2026), Femasys Inc. (Oct 2026), Clene Inc. (Oct 2026)
- FMR LLC also filed stake reports on 761 other companies: ASPEN NEUROSCIENCE INC (Nov 2026), AVALO THERAPEUTICS INC (Nov 2026), BRAZE INC (Nov 2026)
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