Form 4 for INSM INSMED Inc
Accepted 2025-09-04 00:00:00 ET · period of report 2025-09-02 · accession 0001870278-25-000009 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2025-09-04 | 2025-09-02 | INSM | Smith Michael Alexander | CLO | S - Sale+OE | $143.89 | -24.3K | 76.7K | -24% | -$3.49M |
| D | 2025-09-04 | 2025-09-02 | INSM | Smith Michael Alexander | CLO | M - OptEx | $30.46 | +12.8K | 79.2K | +19% | +$389.3K |
| D | 2025-09-04 | 2025-09-02 | INSM | Smith Michael Alexander | CLO | M - OptEx | $0.00 | -12.8K | 0 | -100% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-09-02 | S | D | 1,354 | $141.16 | 77,820 | D | — | — | (F2) This is the weighted average sales price representing 1,354 shares sold at prices ranging from $140.58 to $141.50 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. |
| 2 | Common | Common Stock | 2025-09-02 | S | D | 1,183 | $145.89 | 54,902 | D | — | — | (F7) This is the weighted average sales price representing 1,183 shares sold at prices ranging from $145.75 to $146.04 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. |
| 3 | Common | Common Stock | 2025-09-02 | S | D | 7,391 | $143.16 | 69,329 | D | — | — | (F4) This is the weighted average sales price representing 7,391 shares sold at prices ranging from $142.70 to $143.63 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. |
| 4 | Common | Common Stock | 2025-09-02 | S | D | 8,300 | $144.16 | 61,029 | D | — | — | (F5) This is the weighted average sales price representing 8,300 shares sold at prices ranging from $143.72 to $144.71 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. |
| 5 | Common | Common Stock | 2025-09-02 | S | D | 4,944 | $145.18 | 56,085 | D | — | — | (F6) This is the weighted average sales price representing 4,944 shares sold at prices ranging from $144.72 to $145.57 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. |
| 6 | Common | Common Stock | 2025-09-02 | M | A | 12,780 | $30.46 | 79,174 | D | — | — | |
| 7 | Common | Common Stock | 2025-09-02 | S | D | 1,100 | $142.06 | 76,720 | D | — | — | (F3) This is the weighted average sales price representing 1,100 shares sold at prices ranging from $141.58 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. |
| 8 | Derivative | Stock Option (right to buy) | 2025-09-02 | M | D | 12,780 | $0.00 | 0 | D | $30.46 · — to 2028-01-04 | 12,780 Common Stock | (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. |