X0508 4 2026-01-05 0 0001327811 Workday, Inc. WDAY 0002060774 Kazmaier Gerrit S C/O WORKDAY, INC. 6110 STONERIDGE MALL ROAD PLEASANTON CA 94588 0 1 0 0 President, Prod. and Tech. 1 Class A Common Stock 2026-01-05 4 F 0 2427 205.79 D 108926 D Class A Common Stock 2026-01-06 4 S 0 300 206.78 D 108626 D Class A Common Stock 2026-01-06 4 S 0 1200 207.635 D 107426 D Class A Common Stock 2026-01-06 4 S 0 1437 209.2695 D 105989 D Class A Common Stock 2026-01-06 4 S 0 822 210.109 D 105167 D Represents shares withheld by the Issuer to satisfy the tax withholding obligation in connection with the vesting of restricted stock units (RSUs). Includes 105,167 RSUs, each of which entitle the Reporting Person to receive one share of Class A Common Stock upon settlement. All grants are subject to the Reporting Person's continued service with the Issuer on the applicable vesting dates. The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person dated September 19, 2025. The price reported is a weighted average price. These shares were sold in multiple transactions at prices within the range of $206.17 to $207.1699, 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 $207.35 to $208.3499, 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 $208.66 to $209.6599, 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 $209.72 to $210.7199, 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. /s/ Juliana Capata, attorney-in-fact 2026-01-07