OmniAb, Inc. (OABI)

Distributing

Institutional distribution: ownership decreased -1.22% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

38.54%

QoQ Change

-1.22%

Total Value

$87.1B

Shares Outstanding

145.0M

Crowding AnalysisCrowded

Holders126of 5,944

Avg: 68

Uncrowded88th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.06x

71th percentile

67 buying63 selling

+25

New

-25

Closed

-1,356,159

Net shares

Holding Period Distribution

estimate

Median: 4 QAvg: 3.6 QHolders: 126

Ownership Concentration

Top 5: 59.8%Top 10: 77.3%

Whitefort Capital Management,25.5%

BlackRock,14.5%

CADIAN CAPITAL MANAGEMENT,7.4%

VANGUARD CAPITAL MANAGEMENT7.2%

GEODE CAPITAL MANAGEMENT,5.2%

Others (121)40.2%

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Conviction-Weighted Ownership

Median weight: 0.06%Avg weight: 0.87%Max: 6.59%High conviction (>1%): 2

Whitefort Capital Management,

BlackRock,

CADIAN CAPITAL MANAGEMENT,

VANGUARD CAPITAL MANAGEMENT

GEODE CAPITAL MANAGEMENT,

RICE HALL JAMES & ASSOCIATES,

PRIVATE MANAGEMENT GROUP

STATE STREET

DIMENSIONAL FUND ADVISORS

TOWERVIEW

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD CAPITAL MANAGEMENT$6M4.0M shr

SOLDDIMENSIONAL FUND ADVISORS$640K407K shr

SOLDCADIAN CAPITAL MANAGEMENT$436K278K shr

BOUGHTGEODE CAPITAL MANAGEMENT$319K203K shr

BOUGHTRICE HALL JAMES & ASSOCIATES$229K146K shr

NEWSTATE STREET$4M2.0M shr

BOUGHTBlackRock$2M1.1M shr

NEWTOWERVIEW$2M1.0M shr

BOUGHTCADIAN CAPITAL MANAGEMENT$1M759K shr

BOUGHTVANGUARD GROUP$883K477K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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