Armata Pharmaceuticals, Inc. (ARMP)

Accumulating

Strong institutional accumulation: ownership increased +7.11% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

10.54%

QoQ Change

+7.11%

Total Value

$39.4B

Shares Outstanding

36.6M

Crowding AnalysisCrowded

Holders43of 5,944

Avg: 68

Uncrowded81th percentileCrowded

Institutional Activity

Buy/Sell Ratio3x

57th percentile

24 buying8 selling

+13

New

-4

Closed

+2.7M

Net shares

Holding Period Distribution

estimate

Median: 2 QAvg: 3.3 QHolders: 43

Ownership Concentration

Top 5: 77.2%Top 10: 87.5%

Madison Asset Management,54.6%

VANGUARD CAPITAL MANAGEMENT9.5%

MILLENNIUM MANAGEMENT6.7%

683 Capital Management,3.5%

GEODE CAPITAL MANAGEMENT,3.0%

Others (38)22.8%

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Conviction-Weighted Ownership

Median weight: 0.00%Avg weight: 0.10%Max: 0.61%High conviction (>1%): 0

Madison Asset Management,

VANGUARD CAPITAL MANAGEMENT

MILLENNIUM MANAGEMENT

683 Capital Management,

GEODE CAPITAL MANAGEMENT,

EDGEWOOD MANAGEMENT

Dauntless Investment Group,

SEI INVESTMENTS

VANGUARD FIDUCIARY TRUST

BlackRock,

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWMadison Asset Management$22M2.1M shr

NEWVANGUARD CAPITAL MANAGEMENT$4M366K shr

NEWMILLENNIUM MANAGEMENT$3M258K shr

NEWDauntless Investment Group$928K91K shr

NEWSEI INVESTMENTS$760K74K shr

NEW683 Capital Management$878K140K shr

BOUGHTVANGUARD GROUP$381K61K shr

BOUGHTBlackRock$289K46K shr

NEWGOLDMAN SACHS GROUP$284K45K shr

BOUGHTRENAISSANCE TECHNOLOGIES$171K27K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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