X0306 4 2019-05-14 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 2019-05-15 4 M 0 1661 0.00 A 5299 D Restricted Stock Units (Converted) 2019-05-14 4 A 0 875 0.00 A Common Stock 875 875 D Restricted Stock Units (Premium) 2019-05-14 4 A 0 262 0.00 A Common Stock 262 262 D Restricted Stock Units (Equity Grant) 2019-05-14 4 A 0 2100 0.00 A Common Stock 2100 2100 D Reflects release of restricted stock units that were previously reported on Form 4. In addition to 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 these shares, the reporting person is custodian under the Uniform Gift to Minor Act of 16,630 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 were received in lieu of cash payments to the reporting person for certain retainer and Board of Director service-related fees under a deferred compensation program applicable to participating non-employee directors. Vested restricted stock units may be deferred, in which case, payment will occur according to the elected deferral schedule. The restricted stock units vest on the date of the grant, May 14, 2019. The restricted stock units vest on May 14, 2020. Robert J. Bujarski, attorney-in-fact for Matthew W. Strobeck 2019-05-16