X0609 4 2026-06-25 0 0001906324 QuidelOrtho Corp QDEL 0001238916 BUECHLER KENNETH F false 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 1 0 0 0 0 Restricted Stock Units (Equity Grant) 2026-06-25 4 A 0 15532 0 A Common Stock 15532 15532 D Restricted Stock Units (Converted) 2026-06-25 4 A 0 12204 0 A Common Stock 12204 12204 D Restricted Stock Units (Premium) 2026-06-25 4 A 0 3661 0 A Common Stock 3661 3661 D Each restricted stock unit represents the right to receive one share of QuidelOrtho Corporation common stock. The restricted stock units will vest on June 25, 2027. The restricted stock units were received in lieu of cash payments to the reporting person for certain retainer and Board of Director service-related fees under a deferred compensation program applicable to participating non-employee directors. Release of vested restricted stock units will occur according to the elected deferral schedule. 3,051 shares vested on June 25, 2026, 3,051 shares will vest on September 25, 2026, 3,051 shares will vest on December 25, 2026, and 3,051 shares will vest on March 25, 2027. /s/ Phillip S. Askim, attorney-in-fact for Kenneth F. Buechler 2026-06-29