Form 4 for INSM INSMED Inc
Accepted 2025-08-20 00:00:00 ET · period of report 2025-08-18 · accession 0001402051-25-000007 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMI | 2025-08-20 | 2025-08-18 | INSM | Lewis William | COB, CEO, Dir | S - Sale+OE | $128.40 | -6,865 | 233.9K | -3% | -$881.5K |
| DI | 2025-08-20 | 2025-08-18 | INSM | Lewis William | COB, CEO, Dir | M - OptEx | $10.85 | +6,865 | 240.8K | +3% | +$74.5K |
| DI | 2025-08-20 | 2025-08-18 | INSM | Lewis William | COB, CEO, Dir | M - OptEx | $0.00 | -6,865 | 0 | -100% | $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 | 2025-08-18 | S | D | 2,481 | $128.76 | 235,340 | I By the Katie Procter Dynasty Trust | — | — | (F3) This is the weighted average sales price representing 2,481 shares sold at prices ranging from $128.26 to $129.21 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 | 2025-08-18 | S | D | 2,968 | $127.59 | 237,821 | I By the Katie Procter Dynasty Trust | — | — | (F2) This is the weighted average sales price representing 2,968 shares sold at prices ranging from $127.20 to $128.16 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 | 2025-08-18 | M | A | 6,865 | $10.85 | 240,789 | I By the Katie Procter Dynasty Trust | — | — | |
| 4 | Common | Common Stock | 2025-08-18 | S | D | 1,416 | $129.47 | 233,924 | I By the Katie Procter Dynasty Trust | — | — | (F4) This is the weighted average sales price representing 1,416 shares sold at prices ranging from $129.26 to $129.95 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) | 2025-08-18 | M | D | 6,865 | $0.00 | 0 | I By the Katie Procter Dynasty Trust | $10.85 · — to 2026-05-19 | 6,865 Common Stock | (F5) 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. |