X0306 4 2019-11-18 0 0000353569 QUIDEL CORP /DE/ QDEL 0001720077 BORKAR RATAN S 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 0 1 0 0 SVP, Intl Comm Operations Restricted Stock Units 2019-11-18 4 A 0 3100 0.00 A Common Stock 3100 3100 D Each restricted stock unit represents the right to receive one share of Quidel Corporation common stock. 1,034 shares will vest on the first anniversary date of the grant date, November 18, 2020. 1,033 shares will vest on the second anniversary date of the grant date, November 18, 2021. 1,033 shares will vest on the third anniversary date of the grant date, November 18, 2022. Robert J. Bujarski, attorney-in-fact for Ratan S. Borkar 2019-11-20