On February 9, 2026, Joseph M. Busky, the principal financial officer of QuidelOrtho Corporation, notified the Company of his plans to retire effective as of June 30, 2026. Mr. Busky?s decision to retire is for personal reasons and is not the result of any disagreement with the Company or its independent registered public accountants on any matter relating to the Company?s financial statements, operations, policies or practices.