Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  GIBSON KAREN
 2. Date of Event Requiring Statement (Month/Day/Year)
02/11/2019		 3. Issuer Name and Ticker or Trading Symbol
QUIDEL CORP /DE/ [QDEL]
(Last)
(First)
(Middle)
12544 HIGH BLUFF DRIVE, SUITE 200		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
SVP, IS & Bus. Transformation
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN DIEJO, CA 92130		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 5,096
D
 

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Non-Qualified Stock Options (Right to Buy)   (1) 04/06/2025 Common Stock 14,354 $ 25.55 D  
Non-Qualified Stock Options (Right to Buy)   (2) 02/10/2026 Common Stock 21,506 $ 15.4 D  
Non-Qualified Stock Options (Right to Buy)   (3) 02/15/2027 Common Stock 7,593 $ 21.08 D  
Non-Qualified Stock Options (Right to Buy)   (4) 01/16/2028 Common Stock 3,455 $ 46.41 D  
Non-Qualified Stock Options (Right to Buy) 01/29/2021 01/29/2028 Common Stock 2,970 $ 47.85 D  
Non-Qualified Stock Options (Right to Buy)   (5) 02/04/2029 Common Stock 3,322 $ 59.12 D  
Restricted Stock Units 04/06/2019   (6) Common Stock 5,870 $ 0 (7) D  
Restricted Stock Units   (8)   (8) Common Stock 2,938 $ 0 (7) D  
Restricted Stock Units 02/15/2021   (9) Common Stock 3,797 $ 0 (7) D  
Restricted Stock Units 01/16/2022   (10) Common Stock 1,727 $ 0 (7) D  
Restricted Stock Units 02/04/2023   (11) Common Stock 1,661 $ 0 (7) D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
GIBSON KAREN
12544 HIGH BLUFF DRIVE, SUITE 200
SAN DIEJO, CA 92130		       SVP, IS & Bus. Transformation  

Signatures

Robert J. Bujarski, attorney-in-fact for Karen C. Gibson 02/13/2019
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) 7,178 shares vested on 04/06/2017; 3,588 shares vested on 04/06/2018; and 3,588 shares will vest on 04/06/2019.
(2) 10,754 shares vested on 02/10/2018; 5,376 shares vested on 02/10/2019; and 5,375 shares will vest on 02/10/2020.
(3) 3,797 shares will vest on 2/15/2019; 1,898 shares will vest on 02/15/2020; and 1,898 shares will vest on 02/15/2021.
(4) 1,728 shares will vest on 01/16/2020; 864 shares will vest on 01/16/2021; and 863 shares will vest on 01/16/2022.
(5) 1,661 shares will vest on 02/04/2021; 831 shares will vest on 02/04/2022; and 830 shares will vest on 02/04/2023.
(6) The restricted stock units will vest on the fourth anniversary date of the grant date, 4/06/2019.
(7) Each restricted stock unit represents the right to receive one share of Quidel Corporation common stock.
(8) 1,469 shares vested on 02/10/2018; 734 shares vested on 02/10/2019; 735 shares will vest on 02/10/2020.
(9) The restricted stock units will vest on the fourth anniversary date of the grant date, 02/15/2021.
(10) The restricted stock units will vest on the fourth anniversary date of the grant date, 01/16/2022.
(11) The restricted stock units will vest on the fourth anniversary date of the grant date, 02/04/2023.

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