InsiderPres. & Chief Exec. Officer

Derek J Maetzold Insider Trading Activity

Every SEC Form 4 transaction reported by Derek J Maetzold, 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 Derek J Maetzold buying or selling?

Derek J Maetzold reported 0 open-market buys ($0) and 178 sells ($94.7M) across 178 Form 4 filings at 1 company — a net selling position of $94.7M.

Source: SEC EDGAR Form 4

Key Statistics (as of Sep 1, 2026)

Total Form 4 filings
178
SEC EDGAR
Companies
1
Buys (0)
$0
Sells (178)
$94.7M

Insider sentiment

Net selling

Net insider flow of $94.7M in net selling, filed between May 18, 2020 – Sep 1, 2026.

Companies Derek J Maetzold files for

#CompanyForm 4 filings
1CSTLCASTLE BIOSCIENCES INC178

Recent Derek J Maetzold transactions

DateTickerRoleTypeSharesValue
Sep 1, 2026CSTLPres. & Chief Exec. OfficerSale18.6K$616.1K
Aug 18, 2026CSTLPres. & Chief Exec. OfficerSale7.2K$217.1K
Aug 6, 2026CSTLPres. & Chief Exec. OfficerSale39.0K$1.2M
Aug 4, 2026CSTLPres. & Chief Exec. OfficerSale28.6K$867.5K
Jul 29, 2026CSTLPres. & Chief Exec. OfficerSale9.8K$237.7K
Jul 16, 2026CSTLPres. & Chief Exec. OfficerSale4.2K$95.6K
Jul 6, 2026CSTLPres. & Chief Exec. OfficerSale9.8K$238.9K
Jun 17, 2026CSTLPres. & Chief Exec. OfficerSale4.2K$86.2K
Jun 3, 2026CSTLPres. & Chief Exec. OfficerSale9.8K$205.1K
May 22, 2026CSTLPres. & Chief Exec. OfficerSale4.2K$84.1K
May 11, 2026CSTLPres. & Chief Exec. OfficerSale9.8K$217.9K
Apr 23, 2026CSTLPres. & Chief Exec. OfficerSale4.2K$104.7K
Apr 8, 2026CSTLPres. & Chief Exec. OfficerSale9.8K$246.2K
Mar 30, 2026CSTLPres. & Chief Exec. OfficerSale4.2K$106.6K
Mar 19, 2026CSTLPres. & Chief Exec. OfficerSale19.3K$500.1K
Mar 17, 2026CSTLPres. & Chief Exec. OfficerSale30.8K$792.4K
Mar 13, 2026CSTLPres. & Chief Exec. OfficerSale44.1K$1.1M
Feb 5, 2026CSTLPres. & Chief Exec. OfficerSale4.0K$158.8K
Jan 22, 2026CSTLPres. & Chief Exec. OfficerSale4.0K$160.7K
Jan 7, 2026CSTLPres. & Chief Exec. OfficerSale4.0K$155.7K
Dec 29, 2025CSTLPres. & Chief Exec. OfficerSale830$33.5K
Dec 19, 2025CSTLPres. & Chief Exec. OfficerSale509$20.4K
Dec 17, 2025CSTLPres. & Chief Exec. OfficerSale32.3K$1.3M
Dec 8, 2025CSTLPres. & Chief Exec. OfficerSale1.3K$53.6K
Dec 4, 2025CSTLPres. & Chief Exec. OfficerSale2.7K$105.1K

Showing the 25 most recent filings of 178. Screen every filing.

Derek J Maetzold insider trading FAQ

Is Derek J Maetzold buying or selling?

Across 178 SEC Form 4 filings, Derek J Maetzold reported 0 open-market purchases totaling $0 and 178 sales totaling $94.7M — a net selling position of $94.7M.

Which companies does Derek J Maetzold file Form 4s for?

Derek J Maetzold has reported insider transactions at 1 company, most often CASTLE BIOSCIENCES INC (CSTL).

How far back does Derek J Maetzold's filing history go?

Trabud holds Derek J Maetzold's SEC Form 4 filings from May 18, 2020 – Sep 1, 2026, sourced directly from SEC EDGAR.

Where does Trabud get Derek J Maetzold'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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