Werner Kroll - 27 May 2021 Form 4 Insider Report for QUIDEL CORP /DE/

Role: SVP, R&D
Signature: Robert J. Bujarski, attorney-in-fact for Werner Kroll
Issuer symbol: N/A
Transactions as of: 27 May 2021
Net transactions value: -$273,132
Form type: 4
Filing time: 01 Jun 2021, 19:56:20 UTC
Next filing: 02 Jul 2021
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	QDEL	Common Stock	Options Exercise	$0	+4,376	+54%	$0.000000	12,495	27 May 2021	Direct	F1
transaction	QDEL	Common Stock	Tax liability	$273,132	-2,248	-18%	$121.50^*	10,247	27 May 2021	Direct	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	QDEL	Restricted Stock Units	Options Exercise	$0	-4,376	-50%	$0.000000	4,376	27 May 2021	Common Stock	4,376		Direct	F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Reflects release of restricted stock units that were previously reported on a Form 4.
F2	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 share upon release of restricted stock units.
F3	Restricted stock units convert into common stock on a one-for-one basis.
F4	Award of time-based restricted stock with the following vesting: 4,377 shares vested on the fifth anniversary date of the grant date, May 27, 2019; 4,376 shares vested on the sixth anniversary date of the grant date, May 27, 2020; 4,376 shares vested on the seventh anniversary date of the grant date, May 27, 2021; 4,376 shares will vest on the eighth anniversary date of the grant date, May 27, 2022.