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William Lewis Insider Trading Activity

Every SEC Form 4 transaction reported by William Lewis, sourced directly from SEC EDGAR and updated as new filings are accepted.

By · SEC Form 4 & insider trading data analysts
Last updated:

Quick Answer

Is William Lewis buying or selling?

William Lewis reported 1 open-market buys ($249.6K) and 58 sells ($118.8M) across 59 Form 4 filings at 1 company — a net selling position of $118.6M.

Source: SEC EDGAR Form 4

Key Statistics (as of Jul 10, 2026)

Total Form 4 filings
59
SEC EDGAR
Companies
1
Buys (1)
$249.6K
Sells (58)
$118.8M

Insider sentiment

Net selling

Net insider flow of $118.6M in net selling, filed between Nov 2, 2018 – Jul 10, 2026.

Companies William Lewis files for

#CompanyForm 4 filings
1INSMINSMED Inc59

Recent William Lewis transactions

DateTickerRoleTypeSharesValue
Jul 10, 2026INSMChair and CEOSale10.7K$1.3M
Jun 26, 2026INSMChair and CEOSale21.4K$2.2M
Jun 10, 2026INSMChair and CEOSale6.5K$612.6K
Jun 5, 2026INSMChair and CEOSale7.6K$777.8K
May 20, 2026INSMChair and CEOSale25.6K$2.7M
May 15, 2026INSMChair and CEOSale13.3K$1.5M
May 6, 2026INSMChair and CEOSale10.7K$1.5M
Apr 17, 2026INSMChair and CEOSale10.7K$1.5M
Apr 8, 2026INSMChair and CEOSale10.7K$1.7M
Mar 20, 2026INSMChair and CEOSale10.7K$1.5M
Feb 23, 2026INSMChair and CEOSale10.7K$1.6M
Feb 11, 2026INSMChair and CEOSale13.4K$2.0M
Feb 4, 2026INSMChair and CEOSale3.0K$470.4K
Jan 22, 2026INSMChair and CEOSale10.7K$1.7M
Jan 13, 2026INSMChair and CEOSale19.2K$3.2M
Jan 8, 2026INSMChair and CEOSale9.7K$1.7M
Dec 19, 2025INSMChair and CEOSale10.7K$1.8M
Dec 5, 2025INSMChair and CEOSale10.7K$2.2M
Aug 20, 2025INSMChair and CEOSale6.9K$881.5K
Aug 6, 2025INSMChair and CEOSale6.8K$750.0K
Jul 15, 2025INSMChair and CEOSale6.8K$699.2K
Jul 2, 2025INSMChair and CEOSale6.8K$671.6K
Jun 18, 2025INSMChair and CEOSale135.0K$13.6M
Jun 4, 2025INSMChair and CEOSale12.3K$878.3K
May 22, 2025INSMChair and CEOSale27.9K$1.9M

Showing the 25 most recent filings of 59. Screen every filing.

William Lewis insider trading FAQ

Is William Lewis buying or selling?

Across 59 SEC Form 4 filings, William Lewis reported 1 open-market purchases totaling $249.6K and 58 sales totaling $118.8M — a net selling position of $118.6M.

Which companies does William Lewis file Form 4s for?

William Lewis has reported insider transactions at 1 company, most often INSMED Inc (INSM).

How far back does William Lewis's filing history go?

Trabud holds William Lewis's SEC Form 4 filings from Nov 2, 2018 – Jul 10, 2026, sourced directly from SEC EDGAR.

Where does Trabud get William Lewis's insider trading data?

Directly from SEC EDGAR Form 4 filings. Every transaction on this page is a real filing accepted by the SEC, updated as new filings arrive.

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