QuidelOrtho (QDEL) director adds 6,829 shares through RSU vesting

Rhea-AI Filing Summary

QuidelOrtho Corp director Kenneth F. Buechler reported a compensation-related stock award and vesting of restricted stock units. On May 29, 2026, 6,829 restricted stock units vested and were converted into 6,829 shares of common stock at no exercise price. This is reflected as a grant/acquisition of common shares and an exercise of the corresponding restricted stock unit derivative, leaving no units from that grant outstanding. Following these transactions, Buechler directly holds 108,750 shares of QuidelOrtho common stock.

Insider Trade Summary

6,829 shares exercised/converted

Mixed 2 txns

Insider BUECHLER KENNETH F

Role null

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units (Equity Grant)	6,829	$0.00	--
Grant/Award	Common Stock	6,829	$0.00	--

Holdings After Transaction: Restricted Stock Units (Equity Grant) — 0 shares (Direct, null); Common Stock — 108,750 shares (Direct, null)

Footnotes (1)

1. Reflects release of restricted stock units that were previously reported on a Form 4. Each restricted stock unit represents the right to receive one share of QuidelOrtho Corporation common stock. The restricted stock units vested on May 29, 2026.

Key Figures

RSUs vested: 6,829 units Shares issued from RSUs: 6,829 shares Exercise/conversion price: $0.00 per share +3 more

6 metrics

RSUs vested 6,829 units Restricted stock units vested on May 29, 2026

Shares issued from RSUs 6,829 shares Common stock received upon RSU vesting

Exercise/conversion price $0.00 per share RSU conversion into common stock

Shares held after transaction 108,750 shares Director’s direct common stock holdings post-transaction

Derivative positions remaining from this grant 0 units No RSUs from this award outstanding after vesting

Transactions classified as acquisitions 2 transactions One stock award, one derivative exercise on May 29, 2026

Key Terms

Restricted Stock Units, derivative security, vested

3 terms

Restricted Stock Units financial

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

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

derivative security financial

"Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

vested financial

"The restricted stock units vested on May 29, 2026."

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Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

BUECHLER KENNETH F

(Last) (First) (Middle)

9975 SUMMERS RIDGE ROAD

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/29/2026

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

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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

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	05/29/2026		A		6,829(1)	A	$0	108,750	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 (Equity Grant)	(2)	05/29/2026		M			6,829	(3)	(3)	Common Stock	6,829	$0	0	D

Explanation of Responses:

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

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

3. The restricted stock units vested on May 29, 2026.

Remarks:

	/s/ Phillip S. Askim, attorney-in-fact for Kenneth F. Buechler	06/02/2026
	** Signature of Reporting Person	Date
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.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)