LEWIS WILLIAM

PrivateCIK: 1402051
Location

BRIDGEWATER, NJ

LEWIS WILLIAM (Chair and CEO) sold 3.4% of their position (10.70K shares) of INSMED INC on the open market

Open‑market sale worth $1.54M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 4 sales
InsiderLEWIS WILLIAMCIK 1402051
IssuerINSMED INCCIK 1104506
DirectorOfficer· Chair and CEO
Since Mar 2026
-10.70K
Net shares
Net seller
$1.54M
Total sold
4
Open market trades
0B · 4S
8
Total transactions
10.70K acquired · 21.40K disposed
Non-Derivative Transactions6

Common Stock

Direct
M · Option Exercise

Shares

+6.26K

Price / share

$30.46

Trade value

$190.65K

% of position

2.1%
4/16/2026
301.19K307.44K

Common Stock

Direct
M · Option Exercise

Shares

+4.44K

Price / share

$17.16

Trade value

$76.19K

% of position

1.4%
4/16/2026
307.44K311.88K

Common Stock

Direct
S · Sale

Shares

2.25K

Price / share

$142.99

Trade value

$321.16K

% of position

0.7%
4/16/2026
311.88K309.64K

Common Stock

Direct
S · Sale

Shares

5.37K

Price / share

$143.81

Trade value

$772.69K

% of position

1.7%
4/16/2026
309.64K304.26K

Common Stock

Direct
S · Sale

Shares

2.25K

Price / share

$144.66

Trade value

$326.21K

% of position

0.7%
4/16/2026
304.26K302.01K

Common Stock

Direct
S · Sale

Shares

825.00

Price / share

$145.79

Trade value

$120.28K

% of position

0.3%
4/16/2026
302.01K301.19K
Total

Net shares

+0.00

Net value

-$1.27M

Derivative Transactions2

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

6.26K shares

Shares

6.26K

Strike price

30.46

Held after

37.55K

Exercisable

4/16/2026

Stock Option (right to buy)

Direct
M · Option Exercise
Converts to

Common Stock

4.44K shares

Shares

4.44K

Strike price

17.16

Held after

26.64K

Exercisable

4/16/2026
Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect
Shares owned233.92K
Total
233.92K indirect233.92K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
LEWIS WILLIAM — Insider Transaction (Form 4) Filed Apr 17, 2026 | Finecho