Form 4 for INSM INSMED Inc
Accepted 2025-12-05 00:00:00 ET · period of report 2025-12-04 · accession 0001402051-25-000009 · 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 | 2025-12-05 | 2025-12-04 | INSM | Lewis William | COB, CEO, Dir | S - Sale+OE | $205.62 | -10.7K | 307.9K | -3% | -$2.20M |
| DM | 2025-12-05 | 2025-12-04 | INSM | Lewis William | COB, CEO, Dir | M - OptEx | $24.94 | +10.7K | 314.6K | +4% | +$266.8K |
| DM | 2025-12-05 | 2025-12-04 | INSM | Lewis William | COB, CEO, Dir | M - OptEx | $0.00 | -10.7K | 66.6K | -14% | $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 | 2025-12-04 | S | D | 2,921 | $206.49 | 304,951 | D | — | — | (F4) This is the weighted average sales price representing 2,921 shares sold at prices ranging from $206.15 to $207.13 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 | 2025-12-04 | S | D | 1,040 | $207.42 | 303,911 | D | — | — | (F5) This is the weighted average sales price representing 1.040 shares sold at prices ranging from $207.20 to $207.73 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 | 2025-12-04 | M | A | 6,259 | $30.46 | 310,170 | D | — | — | |
| 4 | Common | Common Stock | 2025-12-04 | M | A | 4,440 | $17.16 | 314,610 | D | — | — | |
| 5 | Common | Common Stock | 2025-12-04 | S | D | 4,516 | $204.62 | 310,094 | D | — | — | (F2) This is the weighted average sales price representing 4,516 shares sold at prices ranging from $204.01 to $204.98 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 | 2025-12-04 | S | D | 2,222 | $205.66 | 307,872 | D | — | — | (F3) This is the weighted average sales price representing 2,222 shares sold at prices ranging from $205.11 to $206.02 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. |
| 7 | Derivative | Stock Option (right to buy) | 2025-12-04 | M | D | 6,259 | $0.00 | 93,886 | D | $30.46 · — to 2028-01-04 | 6,259 Common Stock | (F6) 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. |
| 8 | Derivative | Stock Option (right to buy) | 2025-12-04 | M | D | 4,440 | $0.00 | 66,600 | D | $17.16 · — to 2027-05-17 | 4,440 Common Stock | (F6) 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. |