X0609 4 2026-09-23 0 0001327811 Workday, Inc. WDAY 0000938071 DUFFIELD DAVID A false C/O WORKDAY, INC. 6110 STONERIDGE MALL ROAD PLEASANTON CA 94588 0 0 1 0 1 Class A Common Stock 2026-09-23 4 C 0 99613 0 A 204662 D Class A Common Stock 2026-09-23 4 S 0 2324 188.9153 D 202338 D Class A Common Stock 2026-09-23 4 S 0 1776 189.6906 D 200562 D Class A Common Stock 2026-09-23 4 S 0 4849 190.9495 D 195713 D Class A Common Stock 2026-09-23 4 S 0 63855 192.0989 D 131858 D Class A Common Stock 2026-09-23 4 S 0 24934 192.8404 D 106924 D Class A Common Stock 2026-09-23 4 S 0 1875 193.621 D 105049 D Class B Common Stock 2026-09-23 4 C 0 99613 0 D Class A Common Stock 99613 35877231 D The reported shares are held by the David A. Duffield Trust dated July 14, 1988, a revocable living trust, of which the Reporting Person is trustee and sole beneficiary. This sale was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the David A. Duffield Trust dated December 2, 2025. The price reported is a weighted average price. These shares were sold in multiple transactions at prices within the range of $188.42 to $189.4199, inclusive. The Reporting Person undertakes to provide to Workday, Inc., any security holder of Workday, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices within the range of $189.42 to $190.4199, inclusive. The Reporting Person undertakes to provide to Workday, Inc., any security holder of Workday, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices within the range of $190.4650 to $191.4649, inclusive. The Reporting Person undertakes to provide to Workday, Inc., any security holder of Workday, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices within the range of $191.48 to $192.4799, inclusive. The Reporting Person undertakes to provide to Workday, Inc., any security holder of Workday, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices within the range of $192.48 to $193.4799, inclusive. The Reporting Person undertakes to provide to Workday, Inc., any security holder of Workday, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices within the range of $193.49 to $194.4899, inclusive. The Reporting Person undertakes to provide to Workday, Inc., any security holder of Workday, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range(s) set forth in this footnote of this Form 4. All shares of Class A and Class B Common Stock will convert automatically into shares of a single class of Common Stock upon the earliest to occur of the following: (a) upon the election by the holders of a majority of the then outstanding shares of Class B Common Stock, (b) the date when the number of outstanding shares of Class B Common Stock represents less than 9% of all outstanding shares of Class A and Class B Common Stock, (c) October 11, 2032 or (d) nine months after the death of the later to die of David A. Duffield and Aneel Bhusri. The shares of Class A and Class B Common Stock have no expiration date. Each share of Class B Common Stock is convertible, at any time at the option of the holder, into one (1) share of Class A Common Stock. In addition, each share of Class B Common Stock will convert automatically into one (1) share of Class A Common Stock upon any transfer, whether or not for value, except for certain permitted transfers described in, and transfers to any "permitted transferee" as defined in, the Issuer's restated certificate of incorporation in effect as of the date hereof. The shares of Class B Common Stock have no expiration date. /s/ Juliana Capata, attorney-in-fact 2026-09-24