Insmed's top three insider shareholders as of March 23, 2026 are Steinar J Engelsen (Director, 320.80K shares), William Lewis (Chair And Ceo, 301.19K shares), Melvin Md Sharoky (Director, 242.78K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| William Lewis | Chair And Ceo | 301,185 | 0 | 20 Mar, 2026 |
| Melvin Md Sharoky | 242,776 | 0 | 05 Mar, 2026 | |
| William Lewis | Chair And Ceo | 0 | 233,924 | 20 Aug, 2025 |
| Christine A Pellizzari | Chief Legal Officer | 149,985 | 0 | 18 May, 2021 |
| John Drayton Wise | Chief Commercial Officer | 133,015 | 0 | 07 Feb, 2025 |
| David W J Mcgirr | 44,323 | 53,400 | 11 Feb, 2026 | |
| Carol Schafer | 63,317 | 0 | 19 May, 2025 | |
| Leo Lee | 54,677 | 0 | 18 Nov, 2025 | |
| Michael Alexander Smith | Chief Legal Officer | 51,871 | 0 | 26 Feb, 2026 |
| Orlov S Nicole Schaeffer | Chief People Strategy Officer | 41,754 | 0 | 06 Jan, 2026 |
| John Soriano | Chief Compliance Officer | 35,204 | 0 | 09 Sep, 2021 |
| Melvin Md Sharoky | 0 | 819 | 27 Feb, 2026 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 19 Mar, 2026 | William Lewis | Common Stock | A | 6,259 | $30.46 | 307,444 | D | M |
| 19 Mar, 2026 | William Lewis | Common Stock | A | 4,440 | $17.16 | 311,884 | D | M |
| 19 Mar, 2026 | William Lewis | Common Stock | D | 1,629 | $142.17 | 310,255 | D | S |
| 19 Mar, 2026 | William Lewis | Common Stock | D | 4,537 | $143.42 | 305,718 | D | S |
| 19 Mar, 2026 | William Lewis | Common Stock | D | 4,533 | $144.11 | 301,185 | D | S |
| 19 Mar, 2026 | William Lewis | Stock Option (right to buy) | D | 6,259 | $0.00 | 50,073 | D | M |
| 19 Mar, 2026 | William Lewis | Stock Option (right to buy) | D | 4,440 | $0.00 | 35,520 | D | M |
| 05 Mar, 2026 | William Lewis | Common Stock | A | 6,259 | $30.46 | 307,444 | D | M |
| 03 Mar, 2026 | Melvin Md Sharoky | Common Stock | D | 100 | $0.00 | 242,776 | D | G |
| 05 Mar, 2026 | William Lewis | Common Stock | A | 4,440 | $17.16 | 311,884 | D | M |
| 05 Mar, 2026 | William Lewis | Common Stock | D | 2,083 | $144.23 | 309,801 | D | S |
| 05 Mar, 2026 | William Lewis | Common Stock | D | 2,589 | $145.27 | 307,212 | D | S |
| 05 Mar, 2026 | William Lewis | Common Stock | D | 3,899 | $146.66 | 303,313 | D | S |
| 05 Mar, 2026 | William Lewis | Common Stock | D | 2,128 | $147.54 | 301,185 | D | S |
| 05 Mar, 2026 | William Lewis | Stock Option (right to buy) | D | 6,259 | $0.00 | 56,332 | D | M |
| 05 Mar, 2026 | William Lewis | Stock Option (right to buy) | D | 4,440 | $0.00 | 39,960 | D | M |
| 25 Feb, 2026 | Melvin Md Sharoky | Common Stock | D | 1,072 | $0.00 | 242,876 | D | G |
| 25 Feb, 2026 | Melvin Md Sharoky | Common Stock | A | 243 | $0.00 | 5,423 | I | G |
| 25 Feb, 2026 | Melvin Md Sharoky | Common Stock | A | 243 | $0.00 | 3,724 | I | G |
| 25 Feb, 2026 | Melvin Md Sharoky | Common Stock | A | 243 | $0.00 | 5,007 | I | G |