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 *

Hodges Michelle A.		 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, General Counsel
(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)  708 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 $188.95 5/27/2022  D (2)    2105   (3)12/1/2030 Common Stock 2105 $0.00 0 D  
Non-Qualified Stock Options $254.00 5/27/2022  D (2)    1892   (4)2/1/2031 Common Stock 1892 $0.00 0 D  
Non-Qualified Stock Options $103.36 5/27/2022  D (2)    6438   (5)1/31/2032 Common Stock 6438 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    714   (8) (8)Common Stock 714 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    1420   (9) (9)Common Stock 1420 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    1260   (10) (10)Common Stock 1260 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    1559   (11) (11)Common Stock 1559 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    11910   (12) (12)Common Stock 11910 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    6439   (13) (13)Common Stock 6439 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    7256   (14) (14)Common Stock 7256 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    1020   (15) (15)Common Stock 1020 $0.00 0 D  
Restricted Stock Units  (6)5/27/2022  D (7)    204   (15)(16) (15)(16)Common Stock 204 $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) 1,052 shares will vest on December 1, 2022; 526 shares will vest on December 1, 2023; and 527 shares will vest on December 1, 2024.
(4) 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.
(5) 1,609 shares will vest on each of January 31, 2023 and January 31, 2024; 1,610 shares will vest on each of January 31, 2025 and January 31, 2026.
(6) Each restricted stock unit represents the right to receive one share of Quidel common stock.
(7) 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).
(8) 714 shares will vest in equal installments on December 1, 2022, December 1, 2023 and December 1, 2024.
(9) 473 shares will vest on each of February 1, 2023 and February 1, 2024; 474 shares will vest on February 1, 2025.
(10) 1,260 shares will vest in equal installments on May 25, 2023, May 25, 2024 and May 25, 2025.
(11) 389 shares will vest on October 15, 2022; the remaining 1,170 shares will vest in equal installments on October 15, 2023, October 15, 2024 and October 15, 2025.
(12) 11,910 shares will vest in equal installments on November 8, 2022, November 8, 2023 and November 8, 2024.
(13) 1,609 shares will vest on January 31, 2023; the remaining 4,830 shares will vest in equal installments on January 31, 2024, January 31, 2025 and January 31, 2026.
(14) 3,628 shares will vest on January 31, 2024; the remaining 3,628 shares will vest in equal installments on January 31, 2025 and January 31, 2026.
(15) Release of restricted stock units was deferred pursuant to Quidel's deferred compensation program applicable to participating employees and will occur according to the elected deferral schedule.
(16) 204 shares will vest on January 31, 2023.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Hodges Michelle A.
9975 SUMMERS RIDGE ROAD
SAN DIEGO, CA 92121

SVP, General Counsel
Signatures
/s/ Phillip S. Askim, attorney-in-fact for Michelle A. Hodges6/1/2022
**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).
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