William Lewis Insider Trades & Stock Holdings

Chair and CEO · Insmed Incorporated · Latest filing Jun 25, 2026

William Lewis, Chair and CEO at Insmed Incorporated has 2 Form 4 trades on file since Jun 25, 2026. Open-market activity: 0 purchases ($0) and 1 sale ($2.21M), net -$2.21M. Latest filing: disposed of 21.40K shares of $INSM on Jun 25, 2026 at $103.32.

Trades on file

2

Open-market bought

$0

Open-market sold

$2.21M

Net open-market

-$2.21M

Latest filing

Jun 25, 2026

All insider trades by William Lewis

Date	Ticker	Type	Shares	Price	Value	Owned after	ΔOwn	1W	1M	6M	Role	Filing	Story
Jun 25, 2026	$INSM	Sell (Open-market sale) 10b5-1	21.40K	$103.32	$2.21M			+6.8%	+0.2%		Chair and CEO		—
Jun 25, 2026	$INSM	Buy (Option exercise)	21.40K	$24.94	$533.68K			+6.8%	+0.2%		Chair and CEO		Read

"Buy" means shares acquired on the Form 4 (including grants and option exercises); "Sell" means shares disposed. 1W / 1M / 6M = how the stock moved after the trade.

Stocks William Lewis traded

• $INSM

Frequently asked questions

Has William Lewis been buying or selling stock?

William Lewis has 0 open-market purchases and 1 open-market sale on file, net -$2.21M. Grants, option exercises and tax withholding are listed separately because they are not open-market trades.

What was William Lewis's latest insider trade?

disposed of 21.40K shares of $INSM on Jun 25, 2026 at $103.32.

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.