X0508 4 2023-09-14 0 0001906324 QuidelOrtho Corp QDEL 0001333458 Bujarski Robert Joseph 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 0 1 0 0 EVP & COO 0 Common Stock 2023-09-14 4 A 0 314 0.00 A 36426 D Common Stock 2023-09-14 4 F 0 156 76.37 D 36270 D Restricted Stock Units 2023-09-14 4 M 0 314 0.00 D Common Stock 314 314 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. 314 shares vested on September 14, 2023; the remaining 314 shares will vest on September 14, 2024. /s/ Phillip S. Askim, attorney-in-fact for Robert J. Bujarski 2023-09-18