X0306 4 2018-05-15 0 0000353569 QUIDEL CORP /DE/ QDEL 0001377832 Strobeck Matthew 12544 HIGH BLUFF DRIVE SUITE 200 SAN DIEGO CA 92130 1 0 0 0 Common Stock 2018-05-16 4 M 0 108 0.00 A 3638 D Restricted Stock Units (Equity Grant) 2018-05-15 4 A 0 1661 0.00 A Common Stock 1661 1661 D Reflects vesting of prior restricted stock units, which were previously reported on a Form 4. In addition to the these shares, the reporting person has sole voting and dispositive power with respect to 30,445 shares held by Birchview Fund, LLC in his capacity as the CEO of such entity. The reporting person disclaims beneficial ownership of the shares held by Birchview Fund, LLC except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. In addition to the these shares, the reporting person is custodian under the Uniform Gift to Minor Act for 13,100 shares held by four of the reporting person's children. The reporting person disclaims beneficial ownership of these shares, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose. Each restricted stock unit represents the right to receive one share of Quidel Corporation common Stock. The restricted stock units vest on May 15, 2019. Robert J. Bujarski, attorney-in-fact for Matthew W. Strobeck 2018-05-17