Director at QuidelOrtho (QDEL) gains 6,829 shares through RSU vesting

Rhea-AI Filing Summary

QuidelOrtho Corp director Kenneth J. Widder reported an equity award tied to 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 cash cost, reflecting a compensation-related grant rather than a market purchase.

Following these transactions, Widder directly holds 43,890 shares of QuidelOrtho common stock. The filing shows an exercise of the corresponding derivative position, leaving no remaining restricted stock units from this grant.

Insider Trade Summary

6,829 shares exercised/converted

Mixed 2 txns

Insider WIDDER KENNETH J

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 — 43,890 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

RSU shares vested: 6,829 shares Common shares acquired: 6,829 shares Shares held after transaction: 43,890 shares +1 more

4 metrics

RSU shares vested 6,829 shares Restricted stock units vested on May 29, 2026

Common shares acquired 6,829 shares Shares received upon RSU conversion on May 29, 2026

Shares held after transaction 43,890 shares Direct holdings following the May 29, 2026 transactions

Derivative exercises 6,829 units Restricted stock units exercised/converted in this filing

Key Terms

Restricted Stock Units (Equity Grant), Exercise or conversion of derivative security, Grant, award, or other acquisition

3 terms

Restricted Stock Units (Equity Grant) financial

"Restricted Stock Units (Equity Grant)"

Exercise or conversion of derivative security financial

"transaction_code_description": "Exercise or conversion of derivative security"

Grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition"

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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^*

WIDDER KENNETH J

(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	43,890	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 J. Widder	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)

FAQ

What did QuidelOrtho (QDEL) director Kenneth J. Widder report in this Form 4?

Director Kenneth J. Widder reported an equity compensation event involving restricted stock units. On May 29, 2026, 6,829 restricted stock units vested and converted into 6,829 shares of QuidelOrtho common stock, increasing his directly held share position.

How many QuidelOrtho (QDEL) shares did Kenneth J. Widder acquire?

Kenneth J. Widder acquired 6,829 shares of QuidelOrtho common stock. These shares came from the vesting and release of an equal number of restricted stock units, recorded as a compensation-related grant, not an open-market share purchase.

What happened to Kenneth J. Widder’s restricted stock units at QuidelOrtho (QDEL)?

A block of 6,829 restricted stock units vested on May 29, 2026 and was released as 6,829 common shares. After this exercise and conversion, the filing shows no remaining restricted stock units from this specific grant for Widder.

How many QuidelOrtho (QDEL) shares does Kenneth J. Widder hold after this transaction?

After the reported grant and RSU conversion, Kenneth J. Widder directly holds 43,890 shares of QuidelOrtho common stock. This figure reflects his position immediately following the May 29, 2026 equity compensation transactions.

Was this QuidelOrtho (QDEL) Form 4 a market buy or sell by Kenneth J. Widder?

The Form 4 does not show a market buy or sell. Instead, it reports a grant and vesting of 6,829 restricted stock units that converted into common shares at no stated price, categorized as compensation rather than open-market trading activity.