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First Manhattan Co

SEC CIK
0000728083
Latest filing
Aug 14, 2026

INSM holding history

INSMED Inc in every 13F filed by First Manhattan Co, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

INSM overviewAll 13F holders of INSMFull Q2 2026 holdings

Shares (Q1 2023)
0
Sold out in Q1 2023
Value
$0
% of portfolio
0.0%
Quarters held
8
Since Q1 2021
Holdings of INSM by First Manhattan Co, by quarter
QuarterSharesValue% of portfolioShare changeActionAll holders
Q1 20230$00.0%−25−100.0%Sold outHolders
Q4 202225$499<0.1%00.0%UnchangedHolders
Q3 202225$00.0%00.0%UnchangedHolders
Q2 202225$00.0%00.0%UnchangedHolders
Q1 202225$00.0%00.0%UnchangedHolders
Q4 202125$00.0%00.0%UnchangedHolders
Q3 202125$00.0%00.0%UnchangedHolders
Q2 202125$00.0%00.0%UnchangedHolders
Q1 202125$00.0%––Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.