Immuneering Corp

IMRX

Exchange: Nasdaq
Industry: Pharmaceutical Preparations
SEC CIK: 0001790340

SEC filings (opens in a new tab)

No open-market purchases or sales by Immuneering Corp insiders were filed in the last 90 days; 111 institutions reported holding it in 13F filings for Q2 2026, worth $171.6M in total; no superinvestor holds it.

Q3 2025 vs. Q2 2025

How the institutions holding Immuneering Corp changed between Q2 2025 and Q3 2025.

All holders in Q3 2025 All holders in Q2 2025

13F holders of IMRX: Q2 2025 compared with Q3 2025
Measure	Q2 2025	Q3 2025	Change
Holders	39	69	+30
Shares	3.83M	26.2M	+22.4M (+583.8%)
Value	$12.9M	$183.3M	+$170.4M (+1,320.4%)

New holders (34)

Institutions that held Immuneering Corp at the end of Q3 2025 but not at the end of Q2 2025.

Institutions new to IMRX in Q3 2025
Institution	Shares	Value	% of portfolio
Sanofi	2,708,559	$19.0M	7.28%
Price T Rowe Associates Inc	1,798,782	$12.6M	0.00%
ExodusPoint Capital Management, LP	1,516,833	$10.6M	0.15%
Logos Global Management LP	950,000	$6.65M	0.66%
Citadel Advisors LLC	943,144	$6.60M	0.01%
Blue Owl Capital Holdings LP	550,000	$3.85M	1.20%
Occam Crest Management LP	498,498	$3.49M	2.37%
Monashee Investment Management LLC	300,000	$2.10M	1.05%
Burkehill Global Management, LP	300,000	$2.10M	0.12%
Iridian Asset Management LLC	275,086	$1.93M	0.76%
Diametric Capital, LP	252,193	$1.77M	0.65%
AWM Investment Company, Inc.	150,000	$1.05M	0.10%
Woodline Partners LP	150,000	$1.05M	0.00%
DCF Advisers, LLC	147,000	$1.03M	0.39%
TD Asset Management Inc	145,180	$1.02M	0.00%
Hudson Bay Capital Management LP	102,448	$717.1K	0.00%
Avidity Partners Management LP	90,900	$636.3K	0.14%
Prelude Capital Management, LLC	72,467	$507.3K	0.04%
Manufacturers Life Insurance Company, The	69,274	$484.9K	0.00%
Palumbo Wealth Management LLC	49,052	$343.4K	0.11%
Ameriprise Financial Inc	47,299	$331.1K	0.00%
Gsa Capital Partners LLP	37,836	$265.0K	0.02%
Berman McAleer LLC	25,000	$175.0K	0.02%
Quadrature Capital Ltd	23,785	$165.9K	0.00%
LPL Financial LLC	22,400	$156.8K	0.00%
Vontobel Holding Ltd.	21,500	$150.0K	0.00%
Heights Capital Management, Inc	20,000	$140.0K	0.04%
Resonant Capital Advisors, LLC	20,000	$140.0K	0.01%
Wendell David Associates Inc	15,000	$105.0K	0.01%
Virtu Financial LLC	13,994	$98.0K	0.01%
Moors & Cabot, Inc.	11,000	$77.0K	0.00%
Mercer Global Advisors Inc	10,000	$70.0K	0.00%
Future Financial Wealth Managment LLC	5,000	$35.0K	0.02%
China Universal Asset Management Co., Ltd.	5,000	$35.0K	0.00%

Sold out (4)

Institutions that held Immuneering Corp at the end of Q2 2025 and filed for Q3 2025 without it.

Institutions that sold out of IMRX in Q3 2025
Institution	Shares, Q2 2025	Value, Q2 2025
Cubist Systematic Strategies, LLC	29,404	$99.1K
Tower Research Capital LLC (TRC)	2,984	$10.1K
SBI Securities Co., Ltd.	74	$249
Point72 (DIFC) Ltd	16	$54