X0609 4 2026-04-22 0 0001906324 QuidelOrtho Corp QDEL 0002045799 McLellan Philip D. false 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 0 1 0 0 Chief Operations Officer 0 Common Stock 2026-04-22 4 A 0 3238 0 A 22412 D Common Stock 2026-04-22 4 F 0 1162 11.90 D 21250 D Restricted Stock Units 2026-04-22 4 M 0 3238 0 D Common Stock 3238 3238 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. 3,238 shares vested on April 22, 2026; the remaining 3,238 shares will vest on April 22, 2027. /s/ Jennifer Ahn, attorney-in-fact for Philip D. McLellan 2026-04-24