Form 4 for INSM INSMED Inc
Accepted 2026-02-23 00:00:00 ET · period of report 2026-02-19 · accession 0001402051-26-000015 · 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 | 2026-02-23 | 2026-02-19 | INSM | Lewis William | COB, CEO, Dir | S - Sale+OE | $150.97 | -10.7K | 302.2K | -3% | -$1.62M |
| DM | 2026-02-23 | 2026-02-19 | INSM | Lewis William | COB, CEO, Dir | M - OptEx | $24.94 | +10.7K | 307.4K | +4% | +$266.8K |
| DM | 2026-02-23 | 2026-02-19 | INSM | Lewis William | COB, CEO, Dir | M - OptEx | $0.00 | -10.7K | 44.4K | -19% | $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 | 2026-02-19 | S | D | 1,030 | $153.38 | 301,185 | D | — | — | (F6) This is the weighted average sales price representing 1,030 shares sold at prices ranging from $153.00 to $153.78 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 | 2026-02-19 | S | D | 3,413 | $151.12 | 304,592 | D | — | — | (F4) This is the weighted average sales price representing 3,413 shares sold at prices ranging from $150.54 to $151.51 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 | 2026-02-19 | S | D | 1,891 | $150.10 | 308,005 | D | — | — | (F3) This is the weighted average sales price representing 1,891 shares sold at prices ranging from $149.53 to $150.50 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. |
| 4 | Common | Common Stock | 2026-02-19 | S | D | 1,988 | $149.17 | 309,896 | D | — | — | (F2) This is the weighted average sales price representing 1,988 shares sold at prices ranging from $148.51 to $149.50 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. |
| 5 | Common | Common Stock | 2026-02-19 | M | A | 4,440 | $17.16 | 311,884 | D | — | — | |
| 6 | Common | Common Stock | 2026-02-19 | M | A | 6,259 | $30.46 | 307,444 | D | — | — | |
| 7 | Common | Common Stock | 2026-02-19 | S | D | 2,377 | $151.92 | 302,215 | D | — | — | (F5) This is the weighted average sales price representing 2,377 shares sold at prices ranging from $151.56 to $152.43 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) | 2026-02-19 | M | D | 6,259 | $0.00 | 62,591 | D | $30.46 · — to 2028-01-04 | 6,259 Common Stock | (F7) 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. |
| 9 | Derivative | Stock Option (right to buy) | 2026-02-19 | M | D | 4,440 | $0.00 | 44,400 | D | $17.16 · — to 2027-05-17 | 4,440 Common Stock | (F7) 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. |