X0508 4 2023-10-15 0 0001906324 QuidelOrtho Corp QDEL 0001833942 Hodges Michelle A. 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 0 1 0 0 SVP, General Counsel 0 Common Stock 2023-10-15 4 A 0 390 0.00 A 4965 D Common Stock 2023-10-15 4 F 0 135 68.02 D 4830 D Restricted Stock Units 2023-10-15 4 M 0 390 0.00 D Common Stock 390 780 D Reflects release of restricted stock units that were previously reported on a Form 4. Disposition of shares, as set forth above, was in connection with the Issuer's withholding of common shares to satisfy tax withholding obligations related to the issuance of common shares upon release of restricted stock units. Each restricted stock unit represents the right to receive one share of QuidelOrtho Corporation common stock. 390 shares vested on October 15, 2023; the remaining 780 shares will vest in equal installments on October 15, 2024 and October 15, 2025. /s/ Phillip S. Askim, attorney-in-fact for Michelle A. Hodges 2023-10-17