Senior insider sale
General Counsel, Senior VP at INSMED INC — senior position signals high conviction
$4.51M
28.57K shares
What this filing means
SMITH MICHAEL ALEXANDER plans to sell 28.57K shares of INSMED INC valued at approximately $4.51M. 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: 2/24/2026ACC: 0001628280-26-011144
Officer· General Counsel, Senior VP
Since Jul 2021
28.57K
Shares to sell
$4.51M
Approx. market value
24.77K
Acquired (3 months)
1
Planned
4 completed
Securities Acquired — Last 3 Months5
Stock Plan Activity
n/a
2/24/2026
20.25KStock Plan Activity
n/a
2/1/2026
786.00Stock Plan Activity
n/a
1/6/2026
1.31KStock Plan Activity
n/a
1/5/2026
874.00Stock Plan Activity
n/a
1/4/2026
1.55KTotal acquired24.77K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
2/24/2026 | Stock Plan Activity n/a | 20.25K | — |
2/1/2026 | Stock Plan Activity n/a | 786.00 | — |
1/6/2026 | Stock Plan Activity n/a | 1.31K | — |
1/5/2026 | Stock Plan Activity n/a | 874.00 | — |
1/4/2026 | Stock Plan Activity n/a | 1.55K | — |
| Total | 24.77K | ||
Planned & Completed Dispositions5
Completed
—Completed
Units to sell
640.00
Market value
$100.0K
2/4/2026
—Completed
Units to sell
1.05K
Market value
$183.4K
1/8/2026
—Completed
Units to sell
709.00
Market value
$124.1K
1/7/2026
—Completed
Units to sell
1.40K
Market value
$242.0K
1/6/2026
Planned — Approximate Date
NASDAQPlanned
Units to sell
24.77K
Market value
$3.86M
2/24/2026
Total
Units
28.57K
Value
$4.51M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
2/4/2026 | 640.00 | $100.0K | — | Completed |
1/8/2026 | 1.05K | $183.4K | — | Completed |
1/7/2026 | 709.00 | $124.1K | — | Completed |
1/6/2026 | 1.40K | $242.0K | — | Completed |
| Planned — Approximate Date | ||||
2/24/2026 | 24.77K | $3.86M | NASDAQ | Planned |
| Total | 28.57K | $4.51M | ||