Form 4 for INSM INSMED Inc
Accepted 2026-03-31 00:00:00 ET · period of report 2026-03-30 · accession 0001870278-26-000010 · 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 | 2026-03-31 | 2026-03-30 | INSM | Smith Michael Alexander | CLO | M - OptEx | $24.78 | +19.6K | 57.5K | +52% | +$486.6K |
| D | 2026-03-31 | 2026-03-30 | INSM | Smith Michael Alexander | CLO | S - Sale+OE | $150.98 | -19.6K | 51.9K | -27% | -$2.96M |
| DM | 2026-03-31 | 2026-03-30 | INSM | Smith Michael Alexander | CLO | M - OptEx | $0.00 | -19.6K | 8,633 | -69% | $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 | 2026-03-30 | M | A | 13,989 | $27.89 | 71,509 | D | — | — | |
| 2 | Common | Common Stock | 2026-03-30 | M | A | 5,649 | $17.07 | 57,520 | D | — | — | |
| 3 | Common | Common Stock | 2026-03-30 | S | D | 19,638 | $150.98 | 51,871 | D | — | — | |
| 4 | Derivative | Stock Option (right to buy) | 2026-03-30 | M | D | 13,989 | $0.00 | 18,561 | D | $27.89 · — to 2031-07-08 | 13,989 Common Stock | (F3) 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. |
| 5 | Derivative | Stock Option (right to buy) | 2026-03-30 | M | D | 5,649 | $0.00 | 8,633 | D | $17.07 · — to 2032-05-11 | 5,649 Common Stock | (F2) 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. |