FORM 4
[X] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Ferenczy William J.
2. Issuer Name and Ticker or Trading Symbol

QUIDEL CORP /DE/ [ QDEL ]
5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
SVP, Cardio/Metabolic Unit
(Last)          (First)          (Middle)

9975 SUMMERS RIDGE ROAD
3. Date of Earliest Transaction (MM/DD/YYYY)

5/27/2022
(Street)

SAN DIEGO, CA 92121
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)
2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8)
4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)
6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 5/27/2022  D(1)  8683 D (1)0 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)
2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)
5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)
6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)
8. Price of Derivative Security
(Instr. 5)
9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Non-Qualified Stock Options $23.41 5/27/2022  D (2)    460   (3)2/5/2025 Common Stock 460 $0.00 0 D  
Non-Qualified Stock Options $21.08 5/27/2022  D (2)    1349   (3)2/15/2027 Common Stock 1349 $0.00 0 D  
Non-Qualified Stock Options $46.41 5/27/2022  D (2)    1727   (3)1/16/2028 Common Stock 1727 $0.00 0 D  
Non-Qualified Stock Options $59.12 5/27/2022  D (2)    3322   (4)2/4/2029 Common Stock 3322 $0.00 0 D  
Non-Qualified Stock Options $77.16 5/27/2022  D (2)    2609   (5)2/3/2030 Common Stock 2609 $0.00 0 D  
Non-Qualified Stock Options $103.64 5/27/2022  D (2)    4685   (6)3/30/2030 Common Stock 4685 $0.00 0 D  
Non-Qualified Stock Options $254.00 5/27/2022  D (2)    1892   (7)2/1/2031 Common Stock 1892 $0.00 0 D  
Non-Qualified Stock Options $103.36 5/27/2022  D (2)    4957   (8)1/31/2032 Common Stock 4957 $0.00 0 D  
Restricted Stock Units  (9)5/27/2022  D (10)    1661   (11) (11)Common Stock 1661 $0.00 0 D  
Restricted Stock Units  (9)5/27/2022  D (10)    1304   (12) (12)Common Stock 1304 $0.00 0 D  
Restricted Stock Units  (9)5/27/2022  D (10)    868   (13) (13)Common Stock 868 $0.00 0 D  
Restricted Stock Units  (9)5/27/2022  D (10)    1420   (14) (14)Common Stock 1420 $0.00 0 D  
Restricted Stock Units  (9)5/27/2022  D (10)    4958   (15) (15)Common Stock 4958 $0.00 0 D  

Explanation of Responses:
(1) Pursuant to the Business Combination Agreement, dated as of December 22, 2021 (the "Business Combination Agreement") by and among Quidel Corporation ("Quidel"), Ortho Clinical Diagnostics Holdings plc, QuidelOrtho Corporation ("QuidelOrtho"), Orca Holdco, Inc., Laguna Merger Sub, Inc. and Orca Holdco 2, Inc., each share of common stock of Quidel beneficially owned by the Reporting Person at the effective time of the transaction contemplated by the Business Combination Agreement will be exchanged for one share of common stock of QuidelOrtho.
(2) Pursuant to the Business Combination Agreement, the Quidel Non-Qualified Stock Options will be converted into an equal number of Non-Qualified Stock Options to purchase shares of common stock of QuidelOrtho on the same terms and conditions (including applicable vesting conditions).
(3) Vested in full.
(4) 2,492 shares are vested in full; 830 shares will vest on February 4, 2023.
(5) 1,305 shares are vested in full; the remaining 1,304 shares will vest in equal installments on February 3, 2023 and February 3, 2024.
(6) 2,343 shares are vested in full; the remaining 2,342 shares will vest in equal installments on March 30, 2023 and March 30, 2024.
(7) 473 shares are vested in full; the remaining 1,419 shares will vest in equal installments on February 1, 2023, February 1, 2024 and February 1, 2025.
(8) 1,239 shares will vest on each of January 31, 2023, January 31, 2024 and January 31, 2025; 1,240 shares will vest on January 31, 2026.
(9) Each restricted stock unit represents the right to receive one share of Quidel common stock.
(10) Pursuant to the Business Combination Agreement, the Quidel restricted stock units will be converted into an equal number of restricted stock units representing the right to receive shares of common stock of QuidelOrtho on the same terms and conditions (including applicable vesting conditions).
(11) 1,661 shares will vest on February 4, 2023.
(12) 1,304 shares will vest in equal installments on February 3, 2023 and February 3, 2024.
(13) 868 shares will vest in equal installments on March 30, 2023 and March 30, 2024.
(14) 473 shares will vest on each of February 1, 2023 and February 1, 2024; 474 shares will vest on February 1, 2025.
(15) 1,239 shares will vest on each of January 31, 2023 and January 31, 2024; 1,240 shares will vest on each of January 31, 2025 and January 31, 2026.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Ferenczy William J.
9975 SUMMERS RIDGE ROAD
SAN DIEGO, CA 92121


SVP, Cardio/Metabolic Unit

Signatures
/s/ Phillip S. Askim, attorney-in-fact for William J. Ferenczy6/1/2022
**Signature of Reporting PersonDate


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
*If the form is filed by more than one reporting person, see Instruction 4(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).
Note:File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
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