David A Duffield - Net Worth and Insider Trading
David A Duffield Net Worth
The estimated net worth of David A Duffield is at least $20 Million dollars as of 2026-09-21. David A Duffield is the 10% Owner of Workday Inc and owns about 105,049 shares of Workday Inc (WDAY) stock worth over $20 Million. Details can be seen in David A Duffield's Latest Holdings Summary section.
Disclaimer: The insider information is derived from SEC filings. The estimated net worth is based on the final shares held after open market or private purchases and sales of common stock with a transaction code of "P" or "S" on Form 4, assuming that David A Duffield has not made any transactions after 2026-09-15 and currently still holds the listed stock(s). Please note that this estimate may not reflect the actual net worth.
Transaction Summary of David A Duffield
David A Duffield Insider Ownership Reports
Based on ownership reports from SEC filings, as the reporting owner, David A Duffield owns 1 companies in total, including Workday Inc (WDAY) .
Click here to see the complete history of David A Duffield’s form 4 insider trades.
Insider Ownership Summary of David A Duffield
| Ticker | Company | Transaction Date | Type of Owner |
|---|---|---|---|
| WDAY | Workday Inc | 2026-09-15 | 10 percent owner |
David A Duffield Latest Holdings Summary
David A Duffield currently owns a total of 1 stock. David A Duffield owns 105,049 shares of Workday Inc (WDAY) as of September 15, 2026, with a value of $20 Million.
Latest Holdings of David A Duffield
| Ticker | Company | Latest Transaction Date | Shares Owned | Current Price ($) | Current Value ($) |
|---|---|---|---|---|---|
| WDAY | Workday Inc | 2026-09-15 | 105,049 | 192.79 | 20,251,871 |
Holding Weightings of David A Duffield
David A Duffield Form 4 Trading Tracker
According to the SEC Form 4 filings, David A Duffield has made a total of 86 transactions in Workday Inc (WDAY) over the past 5 years, including 0 buys and 86 sells. The most-recent trade in Workday Inc is the sale of 96,545 shares on September 15, 2026, which brought David A Duffield around $19 Million.
Insider Trading History of David A Duffield
* The information on this page (including Insider Trading Shares, Share Changes, Cost, etc.) is sourced exclusively from Form 4 filings and does not incorporate any data from 13F or 13D/G filings. As a result, it may differ from the values shown on the Guru page.
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David A Duffield Trading Performance
David A Duffield Ownership Network
Ownership Network List of David A Duffield
Ownership Network Relation of David A Duffield
David A Duffield Owned Company Details
What does Workday Inc do?
Who are the key executives at Workday Inc?
David A Duffield is the 10 percent owner of Workday Inc. Other key executives at Workday Inc include Chief Accounting Officer Mark S. Garfield , President & Prod. and Tech. Gerrit S Kazmaier , and Chief Financial Officer Zane Rowe .
Workday Inc (WDAY) Insider Trades Summary
Over the past 18 months, David A Duffield made 41 insider transaction in Workday Inc (WDAY) with a net sale of 3,850,908. Other recent insider transactions involving Workday Inc (WDAY) include a net sale of 6,319 shares made by Mark S. Garfield , a net sale of 30,000 shares made by Zane Rowe , and a net sale of 21,875 shares made by Carl M. Eschenbach .
In summary, during the past 3 months, insiders sold 935,421 shares of Workday Inc (WDAY) in total and bought 0 shares, with a net sale of 935,421 shares. During the past 18 months, 3,983,087 shares of Workday Inc (WDAY) were sold and 0 shares were bought by its insiders, resulting in a net sale of 3,983,087 shares.
Workday Inc (WDAY)'s detailed insider trading history can be found in Insider Trading Tracker table.
Workday Inc Insider Transactions
David A Duffield Mailing Address
Above is the net worth, insider trading, and ownership report for David A Duffield. Based on the public information released on the U.S. Securities and Exchange Commission (SEC) website, David A Duffield's mailing address is: Pleasanton Ca 94588.
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