X0306 4 2016-05-05 0 0000353569 QUIDEL CORP /DE/ QDEL 0001077650 Dammeyer Rodney F 12544 HIGH BLUFF DRIVE, SUITE 200 SAN DIEGO CA 92130 1 0 0 0 Common Stock 2016-05-05 4 M 0 962 0.00 A 962 D Common Stock 2016-05-05 4 G 0 962 0.00 D 0 D Common Stock 2016-05-05 4 G 0 962 0.00 A 42769 I By Family Trust Reflects vesting of prior restricted stock units, which were previously reported on a Form 4. These shares were gifted by the Reporting Person to the Reporting Person's Dammeyer Family Trust. The Reporting Person disclaims all beneficial ownership of the shares owned by the Dammeyer Family Trust, except to the extent of his pecuniary interest, if any, and the inclusion of these shares in this report should not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. Robert J. Bujarski, attorney-in-fact for Rodney F. Dammeyer 2016-05-09