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Insider Trading

Last Updated: 1 month, 3 weeks ago

Leo Lee has an estimated net worth of at least $20.9 million*, as of Oct. 29, 2025. They own 54,677 shares of INSM stock. They have sold 75,000 shares of INSM stock since 2021, for an estimated $-796,050.

Leo Lee $INSM SEC Form 4 Insider Trading

Leo Lee has filed a total of 6 insider trades in $INSM since 2021. Their most recent trade was a sale of 3,212 shares, made on Nov 17, 2025. Their largest trade was a purchase of 45,000 shares, made on Oct 31, 2022. We estimate that they now own 54,677 shares of $INSM, worth an estimated $21.7 million.



Insider Trading at $INSM

There have been a total of 391 insider trades reported at $INSM since 2021, with 142,260 shares purchased and 4.1 million shares sold. The most active insider traders in $INSM stock have been William Lewis, Martina M.D. Flammer, and Orlov S Nicole Schaeffer. The most recent trade was a sale of 2,175 shares reported by William Lewis (Chair and CEO), made on Dec 18, 2025.



History of Insider Stock Trades by Leo Lee

Company Ticker Purchase / Sale Shares Date Disclosed (EST)
INSM logo INSM Sale 3,212 Nov 17, 2025 Nov. 18, 2025, 5:21 p.m.
INSM logo INSM Sale 17,594 Nov 17, 2025 Nov. 18, 2025, 5:21 p.m.
INSM logo INSM Sale 14,944 Nov 17, 2025 Nov. 18, 2025, 5:21 p.m.
INSM logo INSM Sale 24,076 Nov 17, 2025 Nov. 18, 2025, 5:21 p.m.
INSM logo INSM Sale 15,174 Nov 17, 2025 Nov. 18, 2025, 5:21 p.m.
INSM logo INSM Purchase 45,000 Oct 31, 2022 Nov. 2, 2022, 4:20 p.m.




$INSM Executives and Stock Owners with Insider Trades



*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.