Form 4 for INSM INSMED Inc
Accepted 2026-02-25 00:00:00 ET · period of report 2026-02-24 · accession 0001870278-26-000008 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-02-25 | 2026-02-24 | INSM | Smith Michael Alexander | CLO | M - OptEx | $17.07 | +20.2K | 76.6K | +36% | +$345.6K |
| DM | 2026-02-25 | 2026-02-24 | INSM | Smith Michael Alexander | CLO | S - Sale+OE | $155.77 | -24.8K | 51.9K | -32% | -$3.86M |
| D | 2026-02-25 | 2026-02-24 | INSM | Smith Michael Alexander | CLO | M - OptEx | $0.00 | -20.2K | 14.3K | -59% | $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 | 2026-02-24 | M | A | 20,248 | $17.07 | 76,645 | D | — | — | |
| 2 | Common | Common Stock | 2026-02-24 | S | D | 4,852 | $153.93 | 71,793 | D | — | — | (F2) This is the weighted average sales price representing 4,852 shares sold at prices ranging from $153.47 to $154.46 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 | 2026-02-24 | S | D | 4,151 | $155.06 | 67,642 | D | — | — | (F3) This is the weighted average sales price representing 4,151 shares sold at prices ranging from $154.47 to $155.45 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 | 2026-02-24 | S | D | 15,771 | $156.53 | 51,871 | D | — | — | (F4) This is the weighted average sales price representing 15,771 shares sold at prices ranging from $156.00 to $156.86 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 | Derivative | Stock Option (right to buy) | 2026-02-24 | M | D | 20,248 | $0.00 | 14,282 | D | $17.07 · — to 2032-05-11 | 20,248 Common Stock | (F5) 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. |