Item 10. Directors, Executive Officers, and Corporate Governance.

Information about our directors is incorporated by reference from the discussion under the heading “Election of Directors” under Item 1 of our Proxy Statement for the calendar year 2025 Annual Meeting of Shareholders, which will be filed with the SEC within 120 days of the Company’s fiscal year end covered by this Annual Report (the “Proxy Statement”). Information about our executive officers is incorporated by reference from the discussion in Part I of this Annual Report under the heading “Information about our Executive Officers.” Information about our Audit Committee, including the members of the committee and our Audit Committee Financial Experts, is incorporated by reference from the discussion in Item 1 of the Proxy Statement under the heading “The Board, Committees and Meetings,” and in Item 2 of the Proxy Statement under the heading “Audit Committee Report.”

Information about the Code of Conduct applicable to all employees, officers, and directors can be found on our website, www.mckesson.com, under the caption “Investors — Governance.” Our Corporate Governance Guidelines and current charters for the Audit Committee, Compensation and Talent Committee, Governance and Sustainability Committee, as well as the Compliance Committee and Finance Committee, can be found on the same website, under the same caption.

The Company intends to post on its website required information regarding any amendment to, or waiver from, the Code of Conduct that applies to our Chief Executive Officer, Chief Financial Officer, Controller, and persons performing similar functions within four business days after any such amendment or waiver.

Insider Trading Policies and Procedures

We are committed to fostering a culture of compliance, ethics, and regulatory excellence. In furtherance of that commitment, the Company maintains an insider trading compliance program consisting of multiple integrated policies, procedures, controls, and practices that, together, represent our systematic approach to facilitating the oversight, management, and mitigation of insider trading risks across our organization. The foundation of this program is a framework of insider trading policies and procedures (“Insider Trading Policy Framework”) we have adopted applicable to our directors, officers, and employees, as well as the Company itself, which governs the purchase, sale, and other disposition of the securities of the Company and other organizations, including our business partners. We believe the Insider Trading Policy Framework is reasonably designed to promote compliance with insider trading laws, rules, and regulations, and the listing standards applicable to us. Copies of the various policies and procedures comprising our Insider Trading Policy Framework are filed as Exhibits 19.1 through 19.5 to this Annual Report on Form 10-K.

We apply aspects of the Insider Trading Policy Framework commensurate with our assessment of the varying insider trading risks facing the Company and its workforce. The Insider Trading Policy Framework’s general policies and procedures, together with the insider trading compliance standards in the Code of Conduct, cover all of our directors and employees and provide broad prohibitions against the illegal and unauthorized use and disclosure of material non-public information (“MNPI”). The Insider Trading Policy Framework also contains supplemental targeted policies and procedures for individuals whose roles and functions present heightened risk of access to, and misuse of, MNPI. These separate policies and procedures subject directors, designated officers for purposes of Section 16 of the Exchange Act, and certain other employees who are

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McKESSON CORPORATION

likely to be aware of potential MNPI (collectively, “Designated Insiders”) to additional trading restrictions, which may limit trading in the Company’s securities to defined trading window periods or upon pre-approval by the Company’s securities counsel, or both. The Insider Trading Policy Framework generally permits, however, trading by the Company and its personnel pursuant to a trading plan that is designed to meet the requirements of Rule 10b5-1 of the Exchange Act and the Insider Trading Policy Framework.

The Company reinforces the Insider Trading Policy Framework with similarly-tailored periodic training and compliance reminders. Insider trading compliance is part of our Code of Conduct training that is required for all employees during the onboarding process and on an annual basis thereafter, and we provide supplemental training to Designated Insiders.

The Chief Legal Officer is principally responsible for designing and implementing our insider trading compliance program and risk management strategy. The Chief Legal Officer and other members of our general counsel organization work collaboratively across the enterprise, including in coordination with our global corporate reporting and investor relations functions, to administer the program and otherwise assist senior leadership in monitoring and mitigating our insider trading risks. We review and refresh the program as needed, considering developments in insider trading laws, emerging risk areas, and policy benchmarks.

A committee of our Board periodically reviews our Insider Trading Policy Framework and related compliance and risk management measures to assist the Board in its oversight of the Company’s compliance with legal and regulatory requirements and risk management.