QuidelOrtho (QDEL) COO reports RSU vesting and tax share withholding

Rhea-AI Filing Summary

QuidelOrtho Corporation’s Chief Operations Officer Philip D. McLellan reported routine equity compensation activity. On January 29, 2026, 4,897 restricted stock units vested and converted into an equal number of common shares at $0 per share. To cover tax withholding on this release, 2,017 common shares were withheld at $27.41 per share, leaving McLellan with 16,184 common shares held directly. After this vesting, he also holds 9,796 restricted stock units, scheduled to vest in equal installments on January 29, 2027 and January 29, 2028.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

McLellan Philip D.

(Last) (First) (Middle)

9975 SUMMERS RIDGE ROAD

(Street)

SAN DIEGO CA 92121

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
QuidelOrtho Corp [ QDEL ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operations Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/29/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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	01/29/2026		A		4,897(1)	A	$0	18,201	D
Common Stock	01/29/2026		F		2,017(2)	D	$27.41	16,184	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. 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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(3)	01/29/2026		M			4,897	(4)	(4)	Common Stock	4,897	$0	9,796	D

Explanation of Responses:

1. Reflects release of restricted stock units that were previously reported on a Form 4.

2. 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.

3. Each restricted stock unit represents the right to receive one share of QuidelOrtho Corporation common stock.

4. 4,897 shares vested on January 29, 2026; the remaining 9,796 shares will vest in equal installments on January 29, 2027 and January 29, 2028.

Remarks:

	/s/ Jennifer Ahn, attorney-in-fact for Philip D. McLellan	02/02/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did QuidelOrtho (QDEL) COO Philip McLellan report?

Philip D. McLellan reported the vesting of restricted stock units that converted into QuidelOrtho common stock. The filing shows equity compensation activity and related tax share withholding, rather than an open-market stock purchase or discretionary sale by the Chief Operations Officer.

How many QuidelOrtho RSUs vested for the COO in this Form 4?

The Form 4 shows that 4,897 restricted stock units vested for Philip D. McLellan. Each unit represents one QuidelOrtho common share, so 4,897 common shares were issued to him as part of his equity compensation on January 29, 2026, at zero exercise price.

How many QuidelOrtho shares were withheld for taxes in this filing?

The filing reports that 2,017 QuidelOrtho common shares were disposed of in a code “F” transaction. This reflects issuer share withholding at $27.41 per share to satisfy tax withholding obligations tied to the RSU vesting, not an open-market sale.

How many QuidelOrtho shares does the COO own after these transactions?

After the reported transactions, Philip D. McLellan directly owns 16,184 QuidelOrtho common shares. This amount reflects the net result of RSU conversion at no cost and share withholding for taxes, as disclosed in the Form 4’s non-derivative table.

What is the remaining RSU balance for QuidelOrtho’s COO and vesting schedule?

Following the January 29, 2026 vesting, McLellan holds 9,796 restricted stock units. According to the footnotes, these remaining RSUs will vest in two equal installments on January 29, 2027 and January 29, 2028, each tranche delivering common shares.

What do the Form 4 transaction codes A, F, and M mean for this QuidelOrtho filing?

Code M reflects the settlement of 4,897 restricted stock units into common stock. Code A shows those 4,897 common shares acquired at $0. Code F reports 2,017 shares withheld at $27.41 to satisfy tax withholding related to the RSU release.