X0306 4 2014-01-18 0 0000353569 QUIDEL CORP /DE/ QDEL 0001406652 BRYANT DOUGLAS C 10165 MCKELLAR COURT SAN DIEGO CA 92121 1 1 0 0 President & CEO Common Stock 2014-01-18 4 F 0 2592 31.44 D 185604 D 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 2014-01-21