X0306 4 2020-05-18 0 0000353569 QUIDEL CORP /DE/ QDEL 0001631320 Abney Michael Donald Jr. 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 0 1 0 0 SVP - Distribution Common Stock 2020-05-18 4 M 0 8798 15.40 A 15432 D Common Stock 2020-05-18 4 S 0 8798 198.1224 D 6634 D Common Stock 2020-05-18 4 M 0 7172 21.08 A 13806 D Common Stock 2020-05-18 4 S 0 7172 198.8715 D 6634 D Non-Qualified Stock Option 15.40 2020-05-18 4 M 0 8798 0.00 D 2026-02-10 Common Stock 8798 0 D Non-Qualified Stock Option 21.08 2020-05-18 4 M 0 7172 0.00 D 2027-02-15 Common Stock 7172 7171 D The weighted average sale price for these transactions was $198.1224 per share, with a range of $193.13 to $201.97. Upon request, the Reporting Person hereby undertakes to provide to staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder, the full information regarding the number of shares sold at each separate price. The weighted average sale price for these transactions was $198.8715 per share, with a range of $196.035 to $201.97. Upon request, the Reporting Person hereby undertakes to provide to staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder, the full information regarding the number of shares sold at each separate price. 17,596 shares vested on the second anniversary date of the grant date, February 10, 2018. 8.798 shares vested on the third anniversary date of the grant date, February 10, 2019. 8,798 shares vested on the fourth anniversary date of the grant date, February 10, 2020. 7,172 shares vested on the second anniversary date of the grant date, February 15, 2019. 3,586 shares vested on the third anniversary date of the grant date, February 15, 2020. 3,585 shares will vest on the fourth anniversary date of the grant date, February 15, 2021. All transactions reported herein were effected pursuant to a pre-established 10b5-1 trading plan. Robert J. Bujarski, attorney-in-fact for Michael D. Abney, Jr. 2020-05-20