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INSMED Inc — Director's Dealing 2025
Sep 4, 2025
30150_dirs_2025-09-04_73c5f847-1e4a-4fb1-b7c3-d29936eb7fb3.zip
Director's Dealing
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SEC Form 4 — Statement of Changes in Beneficial Ownership
Issuer: INSMED Inc (INSM)
CIK: 0001104506
Period of Report: 2025-09-02
Reporting Person: Flammer Martina M.D. (Chief Medical Officer)
Non-Derivative Transactions
| Date | Security | Code | Shares | Price | A/D | Holdings After | Ownership |
|---|---|---|---|---|---|---|---|
| 2025-09-02 | Common Stock | M | 13680 | $34.03 | Acquired | 96791 | Direct |
| 2025-09-02 | Common Stock | M | 17160 | $26.46 | Acquired | 113951 | Direct |
| 2025-09-02 | Common Stock | M | 25710 | $26.43 | Acquired | 139661 | Direct |
| 2025-09-02 | Common Stock | M | 38846 | $17.07 | Acquired | 178507 | Direct |
| 2025-09-02 | Common Stock | M | 13072 | $19.74 | Acquired | 191579 | Direct |
| 2025-09-02 | Common Stock | M | 36555 | $18.95 | Acquired | 228134 | Direct |
| 2025-09-02 | Common Stock | M | 23835 | $29.13 | Acquired | 251969 | Direct |
| 2025-09-02 | Common Stock | M | 17790 | $25.83 | Acquired | 269759 | Direct |
| 2025-09-02 | Common Stock | S | 19066 | $141.27 | Disposed | 250693 | Direct |
| 2025-09-02 | Common Stock | S | 5877 | $142.03 | Disposed | 244816 | Direct |
| 2025-09-02 | Common Stock | S | 35245 | $143.16 | Disposed | 209571 | Direct |
| 2025-09-02 | Common Stock | S | 28063 | $144.05 | Disposed | 181508 | Direct |
| 2025-09-02 | Common Stock | S | 63782 | $145.33 | Disposed | 117726 | Direct |
| 2025-09-02 | Common Stock | S | 34615 | $146.05 | Disposed | 83111 | Direct |
Derivative Transactions
| Date | Security | Exercise Price | Code | Shares | A/D | Expiration | Underlying | Ownership |
|---|---|---|---|---|---|---|---|---|
| 2025-09-02 | Stock Option (right to buy) | $34.03 | M | 13680 | Disposed | 2031-01-07 | Common Stock (13680) | Direct |
| 2025-09-02 | Stock Option (right to buy) | $26.46 | M | 17160 | Disposed | 2031-05-12 | Common Stock (17160) | Direct |
| 2025-09-02 | Stock Option (right to buy) | $26.43 | M | 25710 | Disposed | 2032-01-06 | Common Stock (25710) | Direct |
| 2025-09-02 | Stock Option (right to buy) | $17.07 | M | 38846 | Disposed | 2032-05-11 | Common Stock (38846) | Direct |
| 2025-09-02 | Stock Option (right to buy) | $19.74 | M | 13072 | Disposed | 2033-01-05 | Common Stock (13072) | Direct |
| 2025-09-02 | Stock Option (right to buy) | $18.95 | M | 36555 | Disposed | 2033-05-11 | Common Stock (36555) | Direct |
| 2025-09-02 | Stock Option (right to buy) | $29.13 | M | 23835 | Disposed | 2034-01-04 | Common Stock (23835) | Direct |
| 2025-09-02 | Stock Option (right to buy) | $25.83 | M | 17790 | Disposed | 2034-05-13 | Common Stock (17790) | Direct |
Footnotes
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.
F2: This is the weighted average sales price representing 19,066 shares sold at prices ranging from $140.56 to $141.51 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.
F3: This is the weighted average sales price representing 5,877 shares sold at prices ranging from $141.61 to $142.55 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.
F4: This is the weighted average sales price representing 35,245 shares sold at prices ranging from $142.70 to $143.69 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.
F5: This is the weighted average sales price representing 28,063 shares sold at prices ranging from $143.70 to $144.63 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.
F6: This is the weighted average sales price representing 63,782 shares sold at prices ranging from $144.70 to $145.69 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.
F7: This is the weighted average sales price representing 34,615 shares sold at prices ranging from $145.70 to $146.51 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.
F8: The options became exercisable based on the following vesting schedule: 25% vested on the first anniversary of the grant date and an additional 12.5% vested on each sixth month anniversary date thereafter through the fourth anniversary of the date of grant. All options are currently exercisable.
F9: The options become exercisable based on the following vesting schedule: 25% vest on the first anniversary of the grant date and an additional 12.5% vest on each sixth month anniversary date thereafter through the fourth anniversary of the date of grant.
F10: The options become exercisable based on the following vesting schedule: 25% vest on the first day of the first month following the first anniversary of the date of grant (the Initial Vesting Date) and 12.5% vest on each sixth month anniversary date thereafter through the fourth anniversary of the Initial Vesting Date.