Immuneering Ownership | Who Owns Immuneering?

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Immuneering Ownership Summary

Immuneering is owned by 14.67% institutional investors, 17.81% insiders, and 67.51% retail investors. Fmr is the largest institutional shareholder, holding 22.03% of IMRX shares. Fidelity Growth Compy Commingled Pl S is the top mutual fund, with 6.02% of its assets in Immuneering shares.

IMRX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Immuneering	14.67%	17.81%	67.51%
Sector	Healthcare Stocks	35.38%	11.35%	53.27%
Industry	Biotech Stocks	33.91%	11.39%	54.70%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Fmr	9.70M	22.03%	$51.11M
Vanguard group	2.57M	6.47%	$16.90M
Sanofi	2.71M	6.15%	$14.27M
Marshall wace, llp	2.00M	4.54%	$10.52M
Exoduspoint capital management, lp	1.52M	4.22%	$10.62M
Price t rowe associates inc /md/	1.83M	4.16%	$9.64M
Blackrock funding, inc. /de	1.51M	3.42%	$7.94M
Logos global management lp	950.00K	2.64%	$6.65M
Millennium management	1.10M	2.51%	$5.81M
Blackrock	533.36K	1.82%	$682.71K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Southport management	272.50K	7.87%	$1.91M
Sanofi	2.71M	4.25%	$14.27M
Logos global management lp	950.00K	0.60%	$6.65M
Diametric capital, lp	174.90K	0.24%	$921.71K
Dcf advisers	141.46K	0.20%	$745.50K
Flower city capital	55.03K	0.15%	$290.00K
Exoduspoint capital management, lp	1.52M	0.11%	$10.62M
Prosight management, lp	123.41K	0.11%	$650.37K
Burkehill global management, lp	300.00K	0.08%	$1.58M
Future financial wealth managment	18.00K	0.07%	$103.50K

Top Buyers

Holder	Shares	% Assets	Change
Exoduspoint capital management, lp	1.52M	0.11%	1.52M
Marshall wace, llp	2.00M	0.01%	1.28M
Millennium management	1.10M	0.00%	1.05M
Logos global management lp	950.00K	0.60%	950.00K
Summit financial	376.75K	0.03%	376.75K

Top Sellers

Holder	Shares	% Assets	Change
Cormorant asset management, lp	-	-	-3.30M
Empery asset management, lp	-	-	-2.67M
State street	268.52K	-	-2.13M
Blackrock	533.36K	-	-843.76K
Blue owl capital lp	-	-	-665.00K

New Positions

Holder	Shares	% Assets	Change	Value
Exoduspoint capital management, lp	1.52M	0.11%	1.52M	$10.62M
Logos global management lp	950.00K	0.60%	950.00K	$6.65M
Summit financial	376.75K	0.03%	376.75K	$1.99M
Vanguard fiduciary trust	322.04K	0.00%	322.04K	$1.70M
Two sigma advisers, lp	248.70K	0.00%	248.70K	$318.34K

Sold Out

Holder	Change
Nelson, van denburg & campbell wealth management group	-4.00
Nisa investment advisors	-10.00
Point72 (difc)	-16.00
Sbi securities	-74.00
Farther finance advisors	-80.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	51	-45.16%	6,458,494	-79.66%	14	0.23%	31	-47.46%	8	-33.33%
Dec 31, 2025	64	-7.25%	18,176,982	-30.34%	45	0.87%	43	-24.56%	9	28.57%
Sep 30, 2025	68	74.36%	26,041,962	580.01%	72	62.29%	56	194.74%	7	16.67%
Jun 30, 2025	39	14.71%	3,829,641	-14.87%	10	6.72%	19	46.15%	6	-33.33%
Mar 31, 2025	3	-92.86%	288,934	-93.28%	-	0.39%	2	-89.47%	1	-90.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Fidelity Growth Compy Commingled Pl S	3.90M	6.02%	11.83K
HBM Healthcare Investments AG Ord	3.65M	5.65%	-
Fidelity Growth Company Fund	2.85M	4.40%	2.87K
State Street® SPDR® S&P® Biotech ETF	2.18M	3.37%	12.07K
Vanguard Total Stock Mkt Idx Inv	1.62M	2.51%	-
Fidelity Select Biotechnology	1.29M	2.00%	-
Fidelity Growth Company K6	808.79K	1.25%	-3.26K
T. Rowe Price Health Sciences	431.83K	1.20%	-6.52K
Fidelity Series Growth Company	759.90K	1.17%	1.00K
US Small-Cap Growth II Equity Comp	691.47K	1.07%	-6.70K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Jan 16, 2026	Brakewood Harold Eugene	Chief Business Officer	Buy	$24.99K
Jan 15, 2026	Schall Thomas J.	-	Buy	$101.04K
Jan 15, 2026	Hall Brett Matthew	CHIEF SCIENTIFIC OFFICER	Buy	$10.50K
Jan 13, 2026	Neufeld Leah R	CHIEF PEOPLE OFFICER	Buy	$10.91K
Jan 12, 2026	Feinberg Peter	-	Buy	$86.90K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	5	-
2025 Q4	4	-
2025 Q3	7	-
2025 Q2	7	-
2025 Q1	-	-

IMRX Ownership FAQ

Who Owns Immuneering?

Immuneering shareholders are primarily institutional investors at 14.67%, followed by 17.81% insiders and 67.52% retail investors. The average institutional ownership in Immuneering's industry, Biotech Stocks , is 33.91%, which Immuneering falls below.

Who owns the most shares of Immuneering?

Immuneering’s largest shareholders are Fmr (9.7M shares, 22.03%), Vanguard group (2.57M shares, 6.47%), and Sanofi (2.71M shares, 6.15%). Together, they hold 34.66% of Immuneering’s total shares outstanding.

Does Blackrock own Immuneering?

Yes, BlackRock owns 1.82% of Immuneering, totaling 533.36K shares as of Jun 2024. This represents 0% of BlackRock's total assets, with a market value of 682.71K$. In the last quarter, BlackRock decreased its holdings by -844K shares, a -61.27% change.

Who is Immuneering’s biggest shareholder by percentage of total assets invested?

Southport management is Immuneering’s biggest shareholder by percentage of total assets invested, with 7.87% of its assets in 272.5K Immuneering shares, valued at 1.91M$.

Who is the top mutual fund holder of Immuneering shares?

Fidelity Growth Compy Commingled Pl S is the top mutual fund holder of Immuneering shares, with 6.02% of its total shares outstanding invested in 3.9M Immuneering shares.

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