Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended March 31, 2020 OR Commission File Number: 1-13252 McKESSON CORPORATION (Exact name of registrant as specified in its charter) Delaware 94-3207296 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 6555 State Hwy 161, Irving, TX 75039 (Address of prin ...