X0202 4 2007-09-19 0 0000353569 QUIDEL CORP /DE/ QDEL 0001405732 McLeod Scot M 10165 MCKELLAR COURT SAN DIEGO CA 92121 0 1 0 0 Sr. VP - Operations Common Stock 2009-09-19 4 F 0 96 18.97 D 41191 D Disposition of shares, as set forth above, was in connection with the Company's withholding of stock to satisfy tax withholding obligations related to the lapse of restrictions on Reporting Person's restricted stock award. Robert J. Bujarski, attorney-in-fact for Scot McLeod 2007-09-21