Form 4 for INSM INSMED Inc
Accepted 2026-05-15 16:07:35 ET · period of report 2026-05-13 · accession 0001796960-26-000014 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| MT | 2026-05-15 16:07 | 2026-05-13+ | INSM | Flammer Martina M.D. | Chief Medical Off | S - Sale | $116.12 | -18.3K | 64.9K | -22% | -$2.13M |
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 | 2026-05-13 | S | D | 4,470 | $112.76 | 78,773 | D | — | — | (F1) Shares sold to satisfy tax withholding obligations upon the vesting of Restricted Stock Units and to cover related broker fees. (F2) This is the weighted average sales price representing 4,470 shares sold at prices ranging from $112.65 to $112.85 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 | 2026-05-13 | S | D | 3,384 | $116.18 | 75,389 | D | — | — | (F1) Shares sold to satisfy tax withholding obligations upon the vesting of Restricted Stock Units and to cover related broker fees. |
| 3 | Common | Common Stock | 2026-05-14 | S | D | 10,479 | $117.54 | 64,910 | D | — | — | (F3) This transaction was effected pursuant to a 10b5-1 trading plan adopted by the Reporting Person on February 27, 2025 in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934, as amended. |