QuidelOrtho (QDEL) legal chief files Form 3 showing zero shares held

Q: How many QuidelOrtho (QDEL) shares does Nathaniel Sisitsky report owning?

He reports owning 0 shares of QuidelOrtho Corp. The Form 3 states “No securities beneficially owned” and shows total shares following the reported position as 0.0000, indicating no current equity stake is disclosed in this filing.

Q: Does the QuidelOrtho (QDEL) Form 3 show any insider buy or sell transactions?

No, it does not show any buys or sells. The entry is a holding record with an unknown transaction code, stating “No securities beneficially owned” and total direct holdings of 0 shares, so there are no purchase or sale amounts disclosed.

Q: What is the significance of reporting 'No securities beneficially owned' on a Form 3 for QDEL?

Reporting no securities beneficially owned sets an official baseline that the insider starts with zero reported shares. Future Forms 4 or 5 would then show changes relative to this initial position if he later acquires or disposes of QuidelOrtho equity.

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

QuidelOrtho Corp executive Nathaniel Sisitsky, the Chief Legal Officer, has filed an initial ownership report indicating that he currently holds no securities beneficially owned in the company. The filing shows total direct holdings of 0 shares following the reported position.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider SISITSKY NATHANIEL

Role Chief Legal Officer

Type	Security	Shares	Price	Value
holding	No securities beneficially owned	--	--	--

Holdings After Transaction: No securities beneficially owned — 0 shares (Direct)

Footnotes (1)

Key Figures

Shares beneficially owned: 0 shares

1 metrics

Shares beneficially owned 0 shares Total direct holdings reported on Form 3

Key Terms

beneficially owned, Form 3, reporting person

3 terms

beneficially owned financial

"security_title: "No securities beneficially owned""

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Form 3 regulatory

"INSIDER FILING DATA (Form 3)"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reporting person regulatory

""reportingPersons": [ { "name": "SISITSKY NATHANIEL""

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03/31/2026 - 04:15 PM

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

SISITSKY NATHANIEL

(Last)

(First)

(Middle)

9975 SUMMERS RIDGE ROAD

(Street)

SAN DIEGO

CALIFORNIA

92121

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/23/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
No securities beneficially owned	0	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)

Explanation of Responses:

Remarks:

	/s/ Euna Greene, attorney-in-fact for Nathaniel Sisitsky	03/31/2026
	** 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 5 (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 3: SEC 1473 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What does the QuidelOrtho (QDEL) Form 3 filing by Nathaniel Sisitsky show?

It shows that Chief Legal Officer Nathaniel Sisitsky reported no securities beneficially owned in QuidelOrtho Corp. The Form 3 lists total direct holdings of 0 shares as of the reporting date, establishing his baseline ownership position.

How many QuidelOrtho (QDEL) shares does Nathaniel Sisitsky report owning?

He reports owning 0 shares of QuidelOrtho Corp. The Form 3 states “No securities beneficially owned” and shows total shares following the reported position as 0.0000, indicating no current equity stake is disclosed in this filing.

What is the role of Nathaniel Sisitsky in QuidelOrtho (QDEL) as noted in the Form 3?

Nathaniel Sisitsky is identified as an officer of QuidelOrtho Corp, serving as Chief Legal Officer. Form 3 requires certain officers, directors, and large shareholders to report their beneficial ownership when they become subject to Section 16 reporting.

Does the QuidelOrtho (QDEL) Form 3 show any insider buy or sell transactions?

No, it does not show any buys or sells. The entry is a holding record with an unknown transaction code, stating “No securities beneficially owned” and total direct holdings of 0 shares, so there are no purchase or sale amounts disclosed.

What is the significance of reporting 'No securities beneficially owned' on a Form 3 for QDEL?

Reporting no securities beneficially owned sets an official baseline that the insider starts with zero reported shares. Future Forms 4 or 5 would then show changes relative to this initial position if he later acquires or disposes of QuidelOrtho equity.