X0306 4 2015-02-25 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 2015-02-25 4 A 0 2195 0.01 A 226721 D Common Stock 2015-02-25 4 F 0 824 25.68 D 225897 D Reporting Person acquired these shares in connection with Company's 2013 Long-Term Equity Incentive Program. The amount of securities beneficially owned following this transaction include an additional 1,045 shares due to the Reporting Person's purchase of shares pursuant to the Issuer's Employee Stock Purchase Plan. The disposition of shares, as set forth above, was in connection with the Issuer's withholding of common shares to satisfy tax withholding obligations related to the issuance of common shares upon vesting of a restricted stock award. Robert J. Bujarski, attorney-in-fact for Douglas C. Bryant 2015-02-27