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David A Duffield Insider Trading Activity

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

By · Insider-trading data from SEC EDGAR
Latest filing:

Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.

Quick Answer

Is David A Duffield buying or selling?

David A Duffield reported 0 open-market buys ($0) and 148 sells ($3.9B) across 148 Form 4 filings at 1 company — a net selling position of $3.9B.

Source: SEC EDGAR Form 4

What stands out

  • All 148 of David A Duffield's Form 4 filings are for one company, Workday, Inc. (WDAY).
  • The most recent Form 4 was accepted on Oct 13, 2026 (5 days ago).
  • In the last 12 months: no open-market purchases and 35 sales ($557.0M).
  • The largest open-market sale in the last 12 months was $19.1M of Workday, Inc. (WDAY) on Sep 25, 2026. SEC ↗

Key Statistics (as of Oct 13, 2026)

Total Form 4 filings
148
SEC EDGAR
Companies
1
Buys (0)
$0
Sells (148)
$3.9B

Insider sentiment

Net selling

Net insider flow of $3.9B in net selling, filed between Jan 10, 2018 – Oct 13, 2026.

Companies David A Duffield files for

#CompanyForm 4 filings
1WDAYWorkday, Inc.148

Recent David A Duffield transactions

DateTickerRoleTypeSharesValueFiling
Oct 13, 2026WDAY10% OwnerSale99.8K$18.7MSEC ↗
Oct 7, 2026WDAY10% OwnerSale99.2K$18.6MSEC ↗
Oct 5, 2026WDAY10% OwnerSale98.4K$18.4MSEC ↗
Sep 30, 2026WDAY10% OwnerSale99.0K$18.7MSEC ↗
Sep 25, 2026WDAY10% OwnerSale99.6K$19.1MSEC ↗
Sep 21, 2026WDAY10% OwnerSale94.1K$18.3MSEC ↗
Sep 17, 2026WDAY10% OwnerSale96.5K$18.6MSEC ↗
Sep 14, 2026WDAY10% OwnerSale100.8K$18.7MSEC ↗
Sep 9, 2026WDAY10% OwnerSale90.6K$18.0MSEC ↗
Sep 3, 2026WDAY10% OwnerSale95.0K$18.9MSEC ↗
Jul 13, 2026WDAY10% OwnerSale107.5K$14.7MSEC ↗
Jul 7, 2026WDAY10% OwnerSale107.5K$14.5MSEC ↗
Jul 1, 2026WDAY10% OwnerSale107.5K$13.1MSEC ↗
Jun 29, 2026WDAY10% OwnerSale107.5K$12.4MSEC ↗
Jun 24, 2026WDAY10% OwnerSale107.5K$12.3MSEC ↗
Jun 18, 2026WDAY10% OwnerSale107.5K$13.4MSEC ↗
Jun 15, 2026WDAY10% OwnerSale107.5K$13.8MSEC ↗
Jun 11, 2026WDAY10% OwnerSale107.5K$14.9MSEC ↗
Jun 8, 2026WDAY10% OwnerSale107.5K$16.1MSEC ↗
Jun 3, 2026WDAY10% OwnerSale107.5K$16.8MSEC ↗
Apr 13, 2026WDAY10% OwnerSale107.5K$12.1MSEC ↗
Apr 7, 2026WDAY10% OwnerSale107.5K$13.9MSEC ↗
Apr 2, 2026WDAY10% OwnerSale107.5K$13.9MSEC ↗
Mar 30, 2026WDAY10% OwnerSale107.5K$13.8MSEC ↗
Mar 25, 2026WDAY10% OwnerSale107.5K$14.7MSEC ↗

Showing the 25 most recent filings of 148. Screen every filing.

David A Duffield insider trading FAQ

Is David A Duffield buying or selling?

Across 148 SEC Form 4 filings, David A Duffield reported 0 open-market purchases totaling $0 and 148 sales totaling $3.9B — a net selling position of $3.9B.

Which companies does David A Duffield file Form 4s for?

David A Duffield has reported insider transactions at 1 company, most often Workday, Inc. (WDAY).

How far back does David A Duffield's filing history go?

Trabud holds David A Duffield's SEC Form 4 filings from Jan 10, 2018 – Oct 13, 2026, sourced directly from SEC EDGAR.

Where does Trabud get David A Duffield'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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