Form 4 for INSM INSMED Inc
Accepted 2025-12-03 00:00:00 ET · period of report 2025-12-01 · accession 0001796960-25-000008 · 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 | 2025-12-03 | 2025-12-01 | INSM | Flammer Martina M.D. | Chief Medical Off | S - Sale+OE | $206.98 | -8,895 | 84.7K | -10% | -$1.84M |
| D | 2025-12-03 | 2025-12-01 | INSM | Flammer Martina M.D. | Chief Medical Off | M - OptEx | $25.83 | +8,895 | 92.0K | +11% | +$229.8K |
| D | 2025-12-03 | 2025-12-01 | INSM | Flammer Martina M.D. | Chief Medical Off | M - OptEx | $0.00 | -8,895 | 44.5K | -17% | $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 | 2025-12-01 | S | D | 1,450 | $205.98 | 90,556 | D | — | — | (F2) This is the weighted average sales price representing 1,450 shares sold at prices ranging from $205.45 to $206.39 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 | 2025-12-01 | S | D | 1,559 | $207.73 | 83,111 | D | — | — | (F4) This is the weighted average sales price representing 1,559 shares sold at prices ranging from $207.49 to $208.17 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 | 2025-12-01 | S | D | 5,886 | $207.03 | 84,670 | D | — | — | (F3) This is the weighted average sales price representing 5,886 shares sold at prices ranging from $206.48 to $207.47 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 | 2025-12-01 | M | A | 8,895 | $25.83 | 92,006 | D | — | — | |
| 5 | Derivative | Stock Option (right to buy) | 2025-12-01 | M | D | 8,895 | $0.00 | 44,475 | D | $25.83 · — to 2034-05-13 | 8,895 Common Stock | (F5) 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. |