X0306 4 2018-11-28 0 0000353569 QUIDEL CORP /DE/ QDEL 0001406652 BRYANT DOUGLAS C 12544 HIGH BLUFF DRIVE, SUITE 200 SAN DIEGO CA 92130 1 1 0 0 President & CEO Common Stock 2018-11-28 4 M 0 8745 12.36 A 303058 D Common Stock 2018-11-28 4 M 0 9288 15.28 A 312346 D Common Stock 2018-11-28 4 S 0 18033 61.17 D 294313 D Non-Qualified Stock Option 12.36 2018-11-28 4 M 0 8745 0.00 D 2013-02-02 2019-02-02 Common Stock 8745 0 D Non-Qualified Stock Options 15.28 2018-11-28 4 M 0 9288 0.00 D 2014-01-18 2020-01-18 Common Stock 9288 46170 D The weighted average sale price for these transactions was $61.17 per share, with a range of $60.03 to $62.04. 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. All transactions reported herein were effected pursuant to a pre-established 10b5-1 trading plan. Robert J. Bujarski, attorney-in-fact for Douglas C. Bryant 2018-11-30