X0306 4 2022-05-27 0 0001906324 QuidelOrtho Corp QDEL 0001848760 Wilkins Joseph D Jr. 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 1 0 0 0 Common Stock 2022-05-27 4 A 0 1913 A 1913 D Pursuant to the Business Combination Agreement, dated as of December 22, 2021 (the "Business Combination Agreement") by and among Quidel Corporation ("Quidel"), Ortho Clinical Diagnostics Holdings plc, QuidelOrtho Corporation ("QuidelOrtho"), Orca Holdco, Inc., Laguna Merger Sub, Inc. and Orca Holdco 2, Inc., each share of common stock of Quidel beneficially owned by the Reporting Person at the effective time of the transaction contemplated by the Business Combination Agreement was exchanged for one share of common stock of QuidelOrtho. /s/ Phillip S. Askim, attorney-in-fact for Joseph D. Wilkins, Jr. 2022-06-01