Immuneering Corporation (IMRX)
Nasdaq: IMRX · Pharmaceutical Preparations · Cambridge, MA · filing with the SEC since 2019
Who owns Immuneering Corporation
As filed with the SECHolders of 5% or more
4
Fmr LLC holds 14.5% of Class A Common Stock, as its SCHEDULE 13G filed Oct 7, 2025 says.
Directors and officers
14
report now, of 17 people on the record since 2021. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
Fmr LLC
SCHEDULE 13G · filed Oct 7, 2025 · Class A Common Stock
Blackrock, Inc.
SCHEDULE 13G · filed Jul 28, 2026 · Class A Stock
Benjamin J. Zeskind
SCHEDULE 13G/A · filed Jan 22, 2026 · Class A common stock, par value $0.001 per share · 12.8% in Jan 17, 2025
HBM Healthcare Investments (Cayman) Ltd.
SCHEDULE 13G · filed Oct 3, 2025 · Class A Common Stock, par value $0.001 per share
Empery Asset Management, LP
SCHEDULE 13G/A · filed Jan 15, 2026 · Class A Common Stock, $0.001 par value per share · reported falling below 5%, from 8.83% in Oct 21, 2025
What IMRX reports owning in othersstakes of 5% or more, and other ties
Immuneering Corporation reports no stake in another company in the record.
Insider tradesForm 4
0sales
7purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$300,000bought, in dollars
Open-market trades on Form 4 from Nov 9, 2025 to Nov 9, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 9, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window6 of 21 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Hall Brett Matthew | CHIEF SCIENTIFIC OFFICER | 0 | $0 | 0 | 2 | $0 |
| Zeskind Benjamin J. | PRESIDENT AND CEO | 0 | $0 | 0 | 1 | $0 |
| Neufeld Leah R | CHIEF PEOPLE OFFICER | 0 | $0 | 0 | 1 | $0 |
| Brakewood Harold Eugene | Chief Business Officer | 0 | $0 | 0 | 1 | $0 |
| Feinberg Peter | director | 0 | $0 | 0 | 1 | $100,000 |
| Schall Thomas J. | director | 0 | $0 | 0 | 1 | $100,000 |