X0609 4 2026-06-25 0 0001906324 QuidelOrtho Corp QDEL 0001482197 Chiminski John R 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 5547 0 A Common Stock 5547 5547 D Restricted Stock Units (Premium) 2026-06-25 4 A 0 1109 0 A Common Stock 1109 1109 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. 1,386 shares vested on June 25, 2026, 1,387 shares will vest on September 25, 2026, 1,387 shares will vest on December 25, 2026, and 1,387 shares will vest on March 25, 2027. /s/ Euna Greene, attorney-in-fact for John R. Chiminski 2026-06-29