INSM
INSMED IncCompany with tickers: INSM
Market Cap
$23.03B
Shares Outstanding
216,752,451
CIK
1104506
CUSIP
457669307
13F Activity (30d)
24 filings
5 filers
Website
Visit website
Investor Relations
Investor relations
Notices of intent to sell restricted or control shares, filed with the SEC on Form 144 by insiders and affiliates. A Form 144 signals a planned sale — it does not confirm the shares were actually sold.
| Filed | Seller | Relationship | Shares | Approx. Sale | Broker |
|---|---|---|---|---|---|
| 2026-04-06 | William Lewis | Officer | 10,699 | 2026-04-06 | Merrill Lynch |
| 2026-04-01 | Roger Adsett | Officer | 88,060 | 2026-04-01 | Merrill Lynch |
| 2026-03-30 | Michael Smith | Officer | 19,638 | 2026-03-30 | Merrill Lynch |
| 2026-03-19 | William Lewis | Officer | 10,699 | 2026-03-19 | Merrill Lynch |
| 2026-03-05 | William Lewis | Officer | 10,699 | 2026-03-05 | Merrill Lynch |
| 2026-02-24 | Michael Smith | Officer | 24,774 | 2026-02-24 | Merrill Lynch |
| 2026-02-19 | William Lewis | Officer | 10,699 | 2026-02-19 | Merrill Lynch |
| 2026-02-09 | William Lewis | Officer | 13,396 | 2026-02-09 | Merrill Lynch |
| 2026-02-05 | Martina Flammer | Officer | 869 | 2026-02-05 | Merrill Lynch |
| 2026-02-03 | Sara Bonstein | Officer | 748 | 2026-02-03 | Merrill Lynch |
| 2026-02-03 | William Lewis | Officer | 3,009 | 2026-02-03 | Merrill Lynch |
| 2026-02-03 | Michael Smith | Officer | 640 | 2026-02-03 | Merrill Lynch |
| 2026-02-03 | Martina Flammer | Officer | 795 | 2026-02-03 | Merrill Lynch |
| 2026-02-03 | Roger Adsett | Officer | 791 | 2026-02-03 | Merrill Lynch |
| 2026-02-02 | Martina Flammer | Officer | 7,982 | 2026-02-02 | Merrill Lynch |
| 2026-01-20 | William Lewis | Officer | 10,699 | 2026-01-20 | Merrill Lynch |
| 2026-01-12 | William Lewis | Officer | 19,215 | 2026-01-12 | Merrill Lynch |
| 2026-01-08 | Michael Smith | Officer | 1,053 | 2026-01-08 | Merrill Lynch |
| 2026-01-08 | Martina Flammer | Officer | 5,138 | 2026-01-08 | Merrill Lynch |
| 2026-01-08 | Roger Adsett | Officer | 2,059 | 2026-01-08 | Merrill Lynch |
| 2026-01-08 | Martina Flammer | Officer | 1,660 | 2026-01-08 | Merrill Lynch |
| 2026-01-08 | William Lewis | Officer | 3,223 | 2026-01-08 | Merrill Lynch |
| 2026-01-08 | Sara Bonstein | Officer | 1,447 | 2026-01-08 | Merrill Lynch |
| 2026-01-07 | William Lewis | Officer | 2,357 | 2026-01-07 | Merrill Lynch |
| 2026-01-07 | Roger Adsett | Officer | 802 | 2026-01-07 | Merrill Lynch |
| 2026-01-07 | Martina Flammer | Officer | 1,434 | 2026-01-07 | Merrill Lynch |
| 2026-01-07 | Sara Bonstein | Officer | 1,678 | 2026-01-07 | Merrill Lynch |
| 2026-01-07 | Michael Smith | Officer | 709 | 2026-01-07 | Merrill Lynch |
| 2026-01-06 | Roger Adsett | Officer | 1,429 | 2026-01-06 | Merrill Lynch |
| 2026-01-06 | Michael Smith | Officer | 1,396 | 2026-01-06 | Merrill Lynch |
| 2026-01-06 | Martina Flammer | Officer | 1,615 | 2026-01-06 | Merrill Lynch |
| 2026-01-06 | William Lewis | Officer | 4,096 | 2026-01-06 | Merrill Lynch |
| 2026-01-06 | Sara Bonstein | Officer | 1,517 | 2026-01-06 | Merrill Lynch |
| 2026-01-05 | Martina Flammer | Officer | 20,873 | 2026-01-05 | Merrill Lynch |
| 2026-01-02 | Stacey Nicole Schaeffer Orlov | Officer | 87,290 | 2026-01-02 | Merrill Lynch |
| 2025-12-18 | William Lewis | Officer | 10,699 | 2025-12-18 | Merrill Lynch |
| 2025-12-05 | MELVIN SHAROKY | DIRECTOR | 20,000 | 2025-12-05 | MERRILL LYNCH |
| 2025-12-04 | William Lewis | Officer | 10,699 | 2025-12-04 | Merrill Lynch |
| 2025-12-01 | Martina Flammer | Officer | 8,895 | 2025-12-01 | Merrill Lynch |
| 2025-11-24 | ANDERSON ELIZABETH M | Director | 5,000 | 2025-11-24 | Fidelity Brokerage Services LLC |
| 2025-11-17 | Leo Lee | Director | 75,000 | 2025-11-17 | J.P. Morgan Securities LLC |
| 2025-11-13 | ANDERSON ELIZABETH M | Director | 10,000 | 2025-11-13 | FIDELITY BROKERAGE SERVICES LLC |
| 2025-11-12 | Martina Flammer | Officer | 31,226 | 2025-11-11 | Merrill Lynch |
| 2025-11-12 | Stacey Nicole Schaeffer Orlov | Officer | 30,000 | 2025-11-12 | Merrill Lynch |
| 2025-11-03 | Michael A Smith | Officer | 27,130 | 2025-11-03 | Merrill Lynch |
| 2025-09-12 | Schaeffer Orlov S Nicole | Officer | 76,520 | 2025-09-12 | Merrill Lynch |
| 2025-09-12 | SHAROKY MELVIN MD | Director | 10,000 | 2025-09-12 | Merrill Lynch |
| 2025-09-02 | Flammer Martina M.D. | Officer | 186,648 | 2025-09-02 | Merrill Lynch |
| 2025-09-02 | Smith Michael Alexander | Officer | 24,272 | 2025-09-02 | Merrill Lynch |
| 2025-08-20 | SHAROKY MELVIN MD | Director | 10,000 | 2025-08-20 | Merrill Lynch |
Showing 1–50 of 199 filings