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Insider Trading

Last Updated: 5 days, 23 hours ago

Sara Bonstein has an estimated net worth of at least $27.2 million*, as of April 23, 2025. They own 118,863 shares of INSM stock. They have sold 350,369 shares of INSM stock since 2021, for an estimated $18.7 million.

Sara Bonstein $INSM SEC Form 4 Insider Trading

Sara Bonstein has filed a total of 18 insider trades in $INSM since 2021. Their most recent trade was a sale of 17,622 shares, made on Feb 18, 2025. Their largest trade was a sale of 220,564 shares, made on May 29, 2024. We estimate that they now own 118,863 shares of $INSM, worth an estimated $8.5 million.



Insider Trading at $INSM

There have been a total of 253 insider trades reported at $INSM since 2021, with 139,235 shares purchased and 2.8 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 3,334 shares reported by William Lewis (Chair and CEO), made on Apr 15, 2025.



History of Insider Stock Trades by Sara Bonstein

Company Ticker Purchase / Sale Shares Date Disclosed (EST)
INSM logo INSM Sale 17,622 Feb 18, 2025 Feb. 20, 2025, 5:52 p.m.
INSM logo INSM Sale 700 Feb 18, 2025 Feb. 20, 2025, 5:52 p.m.
INSM logo INSM Sale 13,302 Feb 11, 2025 Feb. 13, 2025, 6:09 p.m.
INSM logo INSM Sale 5,019 Feb 12, 2025 Feb. 13, 2025, 6:09 p.m.
INSM logo INSM Sale 28,390 Feb 06, 2025 Feb. 7, 2025, 6:10 p.m.
INSM logo INSM Sale 3,470 Jan 07, 2025 Jan. 10, 2025, 7:45 p.m.
INSM logo INSM Sale 1,464 Jan 08, 2025 Jan. 10, 2025, 7:45 p.m.
INSM logo INSM Sale 1,066 Jan 10, 2025 Jan. 10, 2025, 7:45 p.m.
INSM logo INSM Sale 220,564 May 29, 2024 May 30, 2024, 5:41 p.m.
INSM logo INSM Sale 20,724 May 28, 2024 May 30, 2024, 5:41 p.m.
INSM logo INSM Sale 11,088 May 14, 2024 May 15, 2024, 4:32 p.m.
INSM logo INSM Sale 4,497 Jan 09, 2024 Jan. 11, 2024, 5:07 p.m.
INSM logo INSM Sale 13,199 Dec 22, 2023 Dec. 22, 2023, 5:03 p.m.
INSM logo INSM Sale 2,210 May 15, 2023 May 17, 2023, 4:09 p.m.
INSM logo INSM Sale 1,610 May 16, 2023 May 17, 2023, 4:09 p.m.
INSM logo INSM Sale 2,857 Jan 10, 2023 Jan. 12, 2023, 5:08 p.m.
INSM logo INSM Sale 1,433 May 16, 2022 May 18, 2022, 4:10 p.m.
INSM logo INSM Sale 1,154 Jan 11, 2022 Jan. 13, 2022, 5:41 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.