X0306 4 2019-03-14 0 0000353569 QUIDEL CORP /DE/ QDEL 0001720077 BORKAR RATAN S 12544 HIGH BLUFF DRIVE SUITE 200 SAN DIEGO CA 92130 0 1 0 0 SVP, Intl Comm Operations Common Stock 2019-03-14 4 M 0 5376 23.41 A 21272 D Common Stock 2019-03-14 4 M 0 5376 15.40 A 26648 D Common Stock 2019-03-14 4 M 0 3797 21.08 A 30445 D Common Stock 2019-03-14 4 S 0 14549 68.00 D 16193 D Non-Qualified Stock Options 23.41 2019-03-14 4 M 0 5376 0.00 D 2025-02-05 Common Stock 5376 5376 D Non-Qualified Stock Options 15.40 2019-03-14 4 M 0 5376 0.00 D 2026-02-10 Common Stock 5376 16130 D Non-Qualified Stock Options 21.08 2019-03-14 4 M 0 3797 0.00 D 2027-02-15 Common Stock 3797 3796 D The weighted average sale price for these transactions was $68.00 per share, with a range of $68.00 to 68.00. 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 amount of securities beneficially owned following this transaction include an additional 297 shares due to the Reporting Person's purchase of shares pursuant to the Issuer's Employee Stock Purchase Plan. 10,754 shares vested on 2/5/2017; 5,376 shares vested on 2/5/2018; and 5,376 shares vested on 2/5/2019. 10,754 shares vested on 2/10/2018; 5,376 shares vested on 2/10/2019; and 5,376 shares will vest on 2/10/2020. 3,797 shares vested on 2/15/2019; 1,898 shares will vest on 2/15/2020; and 1,898 shares will vest on 2/15/2021. All transactions reported herein were effected pursuant to a pre-established 10b5-1 trading plan. Robert J. Bujarski, attorney-in-fact for Ratan S. Borkar 2019-03-18