Immuneering Corporation (IMRX)

Distributing

Strong institutional distribution: ownership decreased -6.43% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

66.66%

QoQ Change

-6.43%

Total Value

$144.2B

Shares Outstanding

44.0M

Crowding AnalysisCrowded

Holders91of 5,944

Avg: 68

Uncrowded86th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.33x

69th percentile

57 buying43 selling

+29

New

-22

Closed

-2,650,114

Net shares

Holding Period Distribution

estimate

Median: 2 QAvg: 2 QHolders: 91

Ownership Concentration

Top 5: 63.1%Top 10: 77.9%

FMR33.1%

Sanofi9.2%

VANGUARD CAPITAL MANAGEMENT7.8%

MARSHALL WACE, LLP6.8%

PRICE T ROWE ASSOCIATES6.2%

Others (86)36.9%

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Conviction-Weighted Ownership

Median weight: 0.00%Avg weight: 0.60%Max: 4.25%High conviction (>1%): 2

FMR

Sanofi

VANGUARD CAPITAL MANAGEMENT

MARSHALL WACE, LLP

PRICE T ROWE ASSOCIATES

BlackRock,

MILLENNIUM MANAGEMENT

GEODE CAPITAL MANAGEMENT,

Occam Crest Management

CITADEL ADVISORS

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD CAPITAL MANAGEMENT$12M2.3M shr

BOUGHTMARSHALL WACE, LLP$7M1.3M shr

NEWMILLENNIUM MANAGEMENT$6M1.1M shr

NEWOccam Crest Management$3M545K shr

NEWCITADEL ADVISORS$3M529K shr

NEWEmpery Asset Management$18M2.7M shr

NEWSTATE STREET$16M2.4M shr

BOUGHTFMR$6M898K shr

BOUGHTBlackRock$5M771K shr

NEWMARSHALL WACE, LLP$5M712K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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