X0306 4 2015-02-25 0 0000353569 QUIDEL CORP /DE/ QDEL 0001333458 Bujarski Robert Joseph 12544 HIGH BLUFF DRIVE, SUITE 200 SAN DIEGO CA 92130 0 1 0 0 SVP, Bus Dev & Gen Counsel Common Stock 2015-02-25 4 A 0 675 0.01 A 55427 D Common Stock 2015-02-25 4 F 0 249 25.68 D 55178 D Reporting Person acquired these shares in connection with Company's 2013 Long-Term Equity Incentive Program. 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 2015-02-27