Senior insider sale
Chair and CEO at INSMED INC — senior position signals high conviction
$12.15M
80.60K shares
What this filing means
LEWIS WILLIAM plans to sell 80.60K shares of INSMED INC valued at approximately $12.15M. 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: 4/16/2026ACC: 0001628280-26-025510
DirectorOfficer· Chair and CEO
Since Mar 2026
80.60K
Shares to sell
$12.15M
Approx. market value
10.70K
Acquired (3 months)
1
Planned
7 completed
Securities Acquired — Last 3 Months1
Stock Plan Activity
n/a
4/16/2026
10.70KTotal acquired10.70K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
4/16/2026 | Stock Plan Activity n/a | 10.70K | — |
| Total | 10.70K | ||
Planned & Completed Dispositions8
Completed
—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
—Completed
Units to sell
13.40K
Market value
$1.98M
2/9/2026
—Completed
Units to sell
3.01K
Market value
$470.4K
2/3/2026
—Completed
Units to sell
10.70K
Market value
$1.70M
1/20/2026
Planned — Approximate Date
NASDAQPlanned
Units to sell
10.70K
Market value
$1.54M
4/16/2026
Total
Units
80.60K
Value
$12.15M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| 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 |
2/9/2026 | 13.40K | $1.98M | — | Completed |
2/3/2026 | 3.01K | $470.4K | — | Completed |
1/20/2026 | 10.70K | $1.70M | — | Completed |
| Planned — Approximate Date | ||||
4/16/2026 | 10.70K | $1.54M | NASDAQ | Planned |
| Total | 80.60K | $12.15M | ||