X0306 4 2020-09-02 0 0000353569 QUIDEL CORP /DE/ QDEL 0001377832 Strobeck Matthew 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 1 0 0 0 Common Stock 2020-09-02 4 P 0 7000 166.5986 A 37445 I Birchview Common Stock 2020-09-02 4 P 0 300 167.735 A 37745 I Birchview Common Stock 2020-09-03 4 P 0 350 155.64 A 38095 I Birchview Common Stock 2020-09-03 4 P 0 50 155.597 A 38145 I Birchview Common Stock 16630 I UGMA Account Common Stock 7399 D The weighted average purchase price for these transactions was $166.5986 per share, with a range of $166.545 to $166.78 per share and were made by the Birchview Fund and Birchview Capital accounts. Upon request, the Reporting Person hereby undertakes to provide to staff of the U.S. Securities and Exchange Commission, the Issuer, or a security holder, the full information regarding the number of shares purchased at each separate price. The Reporting Person has sole voting and dispositive power with respect to shares held by Birchview Fund, LLC in his capacity as the Chief Executive Officer 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. 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. Robert J. Bujarski, attorney-in-fact for Matthew W. Strobeck 2020-09-04