William Lewis is Chair and CEO of INSMED Inc. Currently has a direct ownership of 303,554 shares of INSM, which is worth approximately $29.6 Million. The most recent transaction as insider was on Jun 16, 2025, when has been sold 5,204 shares (Common Stock) at a price of $100.06 per share, resulting in proceeds of $520,712. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 304K
9.17% 3M change
20.98% 12M change
Total Value Held $29.6 Million

William Lewis Transaction History

Date Transaction Value Shares Traded Shares Held Form
Jun 16 2025
SELL
Open market or private sale
$520,712 $100.06 p/Share
5,204 Reduced 1.69%
303,554 Common Stock
Jun 03 2025
SELL
Open market or private sale
$391,248 $71.5 p/Share
5,472 Reduced 1.74%
308,758 Common Stock
May 20 2025
SELL
Open market or private sale
$1,427,032 $67.77 p/Share
21,057 Reduced 6.28%
314,230 Common Stock
May 15 2025
BUY
Grant, award, or other acquisition
-
22,314 Added 6.24%
335,287 Common Stock
May 14 2025
SELL
Open market or private sale
$247,415 $65.61 p/Share
3,771 Reduced 1.19%
312,973 Common Stock
May 13 2025
SELL
Open market or private sale
$1,169,486 $67.05 p/Share
17,442 Reduced 5.22%
316,744 Common Stock
Mar 17 2025
SELL
Open market or private sale
$1,441,125 $76.86 p/Share
18,750 Reduced 5.31%
334,186 Common Stock
Mar 17 2025
BUY
Exercise of conversion of derivative security
$426,750 $22.76 p/Share
18,750 Added 5.04%
352,936 Common Stock
Mar 03 2025
SELL
Open market or private sale
$1,473,562 $78.59 p/Share
18,750 Reduced 5.31%
334,186 Common Stock
Mar 03 2025
BUY
Exercise of conversion of derivative security
$426,750 $22.76 p/Share
18,750 Added 5.04%
352,936 Common Stock
Feb 18 2025
SELL
Open market or private sale
$1,516,875 $80.9 p/Share
18,750 Reduced 5.31%
334,186 Common Stock
Feb 18 2025
BUY
Exercise of conversion of derivative security
$426,750 $22.76 p/Share
18,750 Added 5.04%
352,936 Common Stock
Feb 06 2025
SELL
Open market or private sale
$6,419,415 $80.9 p/Share
79,350 Reduced 14.88%
453,894 Common Stock
Feb 05 2025
BUY
Grant, award, or other acquisition
-
153,710 Added 22.38%
533,244 Common Stock
Feb 03 2025
SELL
Open market or private sale
$1,443,750 $77.0 p/Share
18,750 Reduced 4.71%
379,534 Common Stock
Feb 03 2025
BUY
Exercise of conversion of derivative security
$426,750 $22.76 p/Share
18,750 Added 4.5%
398,284 Common Stock
Jan 15 2025
SELL
Open market or private sale
$2,234,301 $70.25 p/Share
31,805 Reduced 7.73%
379,534 Common Stock
Jan 15 2025
BUY
Exercise of conversion of derivative security
$426,750 $22.76 p/Share
18,750 Added 4.36%
411,339 Common Stock
Jan 10 2025
SELL
Open market or private sale
$188,686 $63.36 p/Share
2,978 Reduced 0.75%
392,589 Common Stock
Jan 08 2025
SELL
Open market or private sale
$263,774 $65.96 p/Share
3,999 Reduced 1.06%
372,743 Common Stock
Jan 08 2025
BUY
Grant, award, or other acquisition
-
22,824 Added 5.46%
395,567 Common Stock
Jan 07 2025
SELL
Open market or private sale
$542,552 $66.02 p/Share
8,218 Reduced 2.13%
376,742 Common Stock
Jan 02 2025
SELL
Open market or private sale
$1,309,500 $69.84 p/Share
18,750 Reduced 4.64%
384,960 Common Stock
Jan 02 2025
BUY
Exercise of conversion of derivative security
$426,750 $22.76 p/Share
18,750 Added 4.44%
403,710 Common Stock
Dec 19 2024
SELL
Open market or private sale
$1,314,000 $70.08 p/Share
18,750 Reduced 4.64%
384,960 Common Stock

Also insider at

NAMS
NewAmsterdam Pharma Co N.V.
WL

William Lewis

Chair and CEO
Bridgewater, NJ

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