Martina M.d. Flammer - 05 Feb 2026 Form 4 Insider Report for INSMED Inc (INSM)

Signature
/s/ Martina Flammer, M.D., by Michael A. Smith as Attorney-in-fact
Issuer symbol
INSM
Transactions as of
05 Feb 2026
Net transactions value
-$132,470
Form type
4
Filing time
06 Feb 2026, 16:18:50 UTC
Previous filing
04 Feb 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Flammer Martina M.D. Chief Medical Officer 700 US HIGHWAY 202/206, BRIDGEWATER /s/ Martina Flammer, M.D., by Michael A. Smith as Attorney-in-fact 06 Feb 2026 0001796960

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction INSM Common Stock Sale $132,470 -869 -1% $152.44 83,243 05 Feb 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 This transaction was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on February 27, 2025 in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended.