MCKESSON CORP

We are a diversified healthcare services leader dedicated to advancing health outcomes for patients everywhere. Our teams partner with biopharma companies, care providers, pharmacies, manufacturers, governments, and others to deliver insights, products, and services to help make quality care more accessible and affordable.

We implemented a new segment reporting structure commencing in the second quarter of fiscal 2026, which resulted in four reportable segments: North American Pharmaceutical, Oncology & Multispecialty, Prescription Technology Solutions (“RxTS”), and Medical-Surgical Solutions. Our Norwegian operations are included in Other. All prior segment information has been recast to reflect our new segment structure and current period presentation. Our organizational structure also includes Corporate, which consists of income and expenses associated with administrative functions and projects, as well as the results of certain investments. The factors for determining the reportable segments include the manner in which management evaluates the performance of the Company combined with the nature of individual business activities. We evaluate the performance of our operating segments on a number of measures, including revenues and operating profit before interest expense and income taxes.

The following summarizes our four reportable segments. Refer to Financial Note 13, “Segments of Business,” to the accompanying condensed consolidated financial statements included in this Quarterly Report for further information regarding our reportable segments.

•North American Pharmaceutical is a reportable segment that provides distribution and logistics services for branded, generic, specialty, biosimilar and over-the-counter pharmaceutical drugs along with other healthcare-related products to wholesale and institutional customers in the United States (“U.S.”) and Canada. In addition, the segment sells financial, operational, and clinical solutions to pharmacies (retail, hospital, alternate sites) and provides consulting, outsourcing, technological, and other services. The U.S. distribution operations was previously included in the former U.S. Pharmaceutical reportable segment and the Canadian operations was previously included in the former International reportable segment.

•Oncology & Multispecialty is a reportable segment that includes provider solutions that encompass specialty drug distribution, group purchasing organizations, infusion services, direct to patient pharmacy capabilities, cell and gene therapy services with InspiroGene, technology solutions, practice consulting services, and vaccine distribution. In addition, the segment supports one of the largest networks of physician-led, integrated, community-based oncology practices dedicated to advancing high-quality, evidence-based cancer care in the U.S. The segment also includes PRISM Vision Holdings, LLC (“PRISM Vision”), which drives patient outcomes in a retina and ophthalmology setting. Combined with Sarah Cannon Research Institute and our technology business, Ontada, this segment provides research, insights, technologies, and services that address and improve cancer and specialty care. This segment was previously reflected in the former U.S. Pharmaceutical reportable segment.

•Prescription Technology Solutionsis a reportable segment that combines automation and our ability to navigate the healthcare ecosystem to connect patients, pharmacies, providers, pharmacy benefit managers, health plans, and biopharma companies to address patients’ medication access, affordability, and adherence challenges. RxTS offers technology services, which includes electronic prior authorization, prescription price transparency, benefit insight, dispensing support services, in addition to third-party logistics, and wholesale distribution support across various therapeutic categories and temperature ranges to biopharma customers throughout the product lifecycle.

•Medical-Surgical Solutions is a reportable segment that provides medical-surgical supply distribution, logistics, and other services to healthcare providers, operating in ambulatory care environments, such as physician offices, surgery centers, and hospital reference labs, as well as extended care settings, including nursing homes and home health care agencies. This segment offers national brand medical-surgical products as well as McKesson’s own line of high-quality products through a network of distribution centers within the U.S. On May 8th, 2025, we announced our intention to separate this segment into an independent company.

Our Norwegian operations, which provide distribution and services to wholesale and retail customers in Norway where we own, partner, or franchise with retail pharmacies, were previously included in the former International reportable segment, but are now included in Other. During the nine months ended December 31, 2025, we entered into a definitive agreement to sell our businesses in Norway, and classified the assets and liabilities as held for sale (“Norway disposal group”). On January 30, 2026, we completed the sale of our Norway disposal group. Refer to Financial Note 2, “Business Acquisitions and Divestitures,” to the accompanying condensed consolidated financial statements in this Quarterly Report for additional information.

Business Acquisitions and Divestitures

PRISM Vision Holdings, LLC

On April 1, 2025, we completed the acquisition of a controlling interest in PRISM Vision, a leading provider of general ophthalmology and retina administrative services. We acquired an 80% interest in PRISM Vision for $875 million in cash and prior owners, including management and physicians in PRISM Vision practices, retained a 20% ownership interest. As of the acquisition date, the financial results of PRISM Vision are reported within our Oncology & Multispecialty segment.

Community Oncology Revitalization Enterprise Ventures, LLC

On June 2, 2025, we completed the acquisition of a controlling interest in Community Oncology Revitalization Enterprise Ventures, LLC (“Core Ventures”), a business and administrative services organization established by Florida Cancer Specialists & Research Institute, LLC, (“FCS”). We acquired a 70% controlling interest in Core Ventures for $2.5 billion in cash and FCS physicians retained 30% interest. As of the acquisition date, Core Ventures is a part of the Oncology platform and financial results are reported within our Oncology & Multispecialty segment.

Refer to Financial Note 2, “Business Acquisitions and Divestitures,” to the accompanying condensed consolidated financial statements in this Quarterly Report for additional information regarding these acquisition transactions.