Senior insider sale
Chair and CEO at INSMED INC — senior position signals high conviction
$12.89M
99.95K shares
What this filing means
LEWIS WILLIAM plans to sell 99.95K shares of INSMED INC valued at approximately $12.89M. 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: 6/3/2026ACC: 0001628280-26-040244
DirectorOfficer· Chair and CEO
Since Mar 2026
99.95K
Shares to sell
$12.89M
Approx. market value
7.61K
Acquired (3 months)
1
Planned
7 completed
Securities Acquired — Last 3 Months1
Stock Plan Activity
n/a
6/1/2026
7.61KTotal acquired7.61K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
6/1/2026 | Stock Plan Activity n/a | 7.61K | — |
| Total | 7.61K | ||
Planned & Completed Dispositions8
Completed
—Completed
Units to sell
25.56K
Market value
$2.72M
5/18/2026
—Completed
Units to sell
13.28K
Market value
$1.54M
5/13/2026
—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
Planned — Approximate Date
NASDAQPlanned
Units to sell
7.61K
Market value
$777.8K
6/3/2026
Total
Units
99.95K
Value
$12.89M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
5/18/2026 | 25.56K | $2.72M | — | Completed |
5/13/2026 | 13.28K | $1.54M | — | 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 |
| Planned — Approximate Date | ||||
6/3/2026 | 7.61K | $777.8K | NASDAQ | Planned |
| Total | 99.95K | $12.89M | ||