Mckesson

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-07-22 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: MCKESSON CORP (MCK) CIK: 0000927653 --- Reporting Owner --- Name: Hinton James H. CIK: 0001905630 Role: Director --- Derivative Transactions --- [Transaction #1] Security: Restricted Stock Units (RSUs) Date: 2026-07-22 | Code: A (Grant or award) Shares: +277 | Price: $0.00 Shares Owned After: 277 | Ownership: D (Direct) Footnotes: [F1] RSUs granted pursuant to an annual grant under the 2022 Stock Plan. This grant vests immediately, however, receipt of the underlying shares is deferred until the Director leaves the Board. [F1] RSUs granted pursuant to an annual grant under the 2022 Stock Plan. This grant vests immediately, however, receipt of the underlying shares is deferred until the Director leaves the Board. --- Footnotes (Complete Index) --- F1: RSUs granted pursuant to an annual grant under the 2022 Stock Plan. This grant vests immediately, however, receipt of the underlying shares is deferred until the Director leaves the Board. --- Signature --- /s/ /s/ Sarah Ahmad Ali, Attorney-in-fact (2026-07-23)