Lewis William sold INSM

December 18, 2025 · Form 4 insider transaction

Lewis William sold 2,175 shares of Insmed Incorporated at $168.54 per share, a transaction worth $366.6K. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 1 day after the transaction.

Direction
Disposed (sell-side)
Shares
2,175
Price
$168.54
Total value
$366.6K
RoleDirector
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateDecember 18, 2025
Filing dateDecember 19, 2025
Shares owned after306,262
OwnershipDirect
10b5-1 planYes
AmendedNo

Footnotes

This transaction was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on September 4, 2025, in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.; This is the weighted average sales price representing 2,175 shares sold at prices ranging from $168.01 to $169.00 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.

View the original Form 4 on SEC EDGAR
Lewis William sold INSM: December 18, 2025 | Insider Trading Screener