X0306 4 2022-01-31 0 0000353569 QUIDEL CORP /DE/ QDEL 0001833942 Hodges Michelle A. 9975 SUMMERS RIDGE ROAD SAN DIEGO CA 92121 0 1 0 0 SVP, General Counsel Common Stock 2022-02-01 4 A 0 473 0.00 A 628 D Common Stock 2022-02-01 4 F 0 194 102.32 D 434 D Non-Qualified Stock Option 103.36 2022-01-31 4 A 0 6438 0.00 A 2032-01-31 Common Stock 6438 6438 D Restricted Stock Units 2022-01-31 4 A 0 6439 0.00 A Common Stock 6439 6439 D Restricted Stock Units 2022-01-31 4 A 0 7256 0.00 A Common Stock 7256 7256 D Restricted Stock Units (Converted) 2022-01-31 4 A 0 1020 0.00 A Common Stock 1020 1020 D Restricted Stock Units (Premium) 2022-01-31 4 A 0 204 0.00 A Common Stock 204 204 D Restricted Stock Units 2022-02-01 4 M 0 473 0.00 D Common Stock 473 1420 D Reflects release of restricted stock units that were previously reported on a Form 4. Disposition of shares, as set forth above, was in connection with the Issuer's withholding of common shares to satisfy tax withholding obligations related to the issuance of common shares upon release of restricted stock units. 1,609 shares vest on the first anniversary date of the grant date, January 31, 2023; 1,609 shares vest on the second anniversary date of the grant date, January 31, 2024; 1,610 shares vest on the third anniversary date of the grant date, January 31, 2025; and 1,610 shares vest on the fourth anniversary date of the grant date, January 31, 2026. Each restricted stock unit represents the right to receive one (1) share of Quidel Corporation common stock. 1,609 shares vest on the first anniversary date of the grant date, January 31, 2023; 1,610 shares vest on the second anniversary date of the grant date, January 31, 2024; 1,610 shares vest on the third anniversary date of the grant date, January 31, 2025; and 1,610 shares vest on the fourth anniversary date of the grant date, January 31, 2026. 3,628 shares vest on the second anniversary date of the grant date, January 31, 2024; 1,814 shares vest on the third anniversary date of the grant date, January 31, 2025; and 1,814 shares vest on the fourth anniversary date of the grant date, January 31, 2026. The restricted stock units were received in lieu of cash payments to the reporting person under a deferred compensation program applicable to participating employees. 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 January 31, 2022. The restricted stock units vest on January 31, 2023. One-quarter of the shares subject to the original grant vest annually over a four-year period, commencing on the first anniversary date of the grant date. Robert J. Bujarski, attorney-in-fact for Michelle A. Hodges 2022-02-02