Senior insider sale
Chair and CEO at INSMED INC — senior position signals high conviction
$11.01M
77.48K shares
What this filing means
LEWIS WILLIAM plans to sell 77.48K shares of INSMED INC valued at approximately $11.01M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 5/13/2026ACC: 0001628280-26-034684
DirectorOfficer· Chair and CEO
Since Mar 2026
77.48K
Shares to sell
$11.01M
Approx. market value
13.28K
Acquired (3 months)
1
Planned
6 completed
Securities Acquired — Last 3 Months1
Stock Plan Activity
n/a
5/11/2026
13.28KTotal acquired13.28K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
5/11/2026 | Stock Plan Activity n/a | 13.28K | — |
| Total | 13.28K | ||
Planned & Completed Dispositions7
Completed
—Completed
Units to sell
10.70K
Market value
$1.47M
5/4/2026
—Completed
Units to sell
10.70K
Market value
$1.54M
4/16/2026
—Completed
Units to sell
10.70K
Market value
$1.75M
4/6/2026
—Completed
Units to sell
10.70K
Market value
$1.54M
3/19/2026
—Completed
Units to sell
10.70K
Market value
$1.56M
3/5/2026
—Completed
Units to sell
10.70K
Market value
$1.62M
2/19/2026
Planned — Approximate Date
NASDAQPlanned
Units to sell
13.28K
Market value
$1.54M
5/13/2026
Total
Units
77.48K
Value
$11.01M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
5/4/2026 | 10.70K | $1.47M | — | Completed |
4/16/2026 | 10.70K | $1.54M | — | Completed |
4/6/2026 | 10.70K | $1.75M | — | Completed |
3/19/2026 | 10.70K | $1.54M | — | Completed |
3/5/2026 | 10.70K | $1.56M | — | Completed |
2/19/2026 | 10.70K | $1.62M | — | Completed |
| Planned — Approximate Date | ||||
5/13/2026 | 13.28K | $1.54M | NASDAQ | Planned |
| Total | 77.48K | $11.01M | ||