X0305 4 2012-05-15 0 0000353569 QUIDEL CORP /DE/ QDEL 0001021412 SCHULER JACK W 10165 MCKELLAR COURT SAN DIEGO CA 92121 1 0 1 0 Restricted Stock Units (Converted) 2012-05-15 4 A 0 2469 0.00 A Common Stock 2469 2469 D Restricted Stock Units (Premium) 2012-05-15 4 A 0 740 0.00 A 2013-05-15 Common Stock 740 740 D Non-Qualified Stock Option 15.73 2012-05-15 4 A 0 7800 0.00 A 2013-05-15 2022-05-15 Common Stock 7800 7800 D Restricted Stock Units (Equity Grant) 2012-05-15 4 A 0 2600 0.00 A 2013-05-15 Common Stock 2600 2600 D Each restricted stock unit represents the right to receive one share of Quidel Corporation common stock. The restricted stock units vest on the date of grant, May 15, 2012. 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. The restricted stock units vest upon the earlier of (a) immediately prior to the annual meeting of Quidel Corporation's stockholders in 2013 or (b) on the first anniversary of the grant date or May 15, 2013. Robert J. Bujarski, attorney-in-fact for Jack W. Schuler 2012-05-17