[SCHEDULE 13G/A] QuidelOrtho Corporation SEC Filing

Rhea-AI Filing Summary

Rubric Capital Management LP and its managing member David Rosen filed Amendment No. 2 to Schedule 13G disclosing a 6.86 % passive stake in QuidelOrtho Corporation (QDEL) as of 30 June 2025.

The filing covers 4,637,738 common shares, all held with shared voting and dispositive power; neither party claims sole authority over the stock. The position is reported on the basis of 67,625,872 shares outstanding (per QDEL’s 30 March 2025 Form 10-Q). Rubric acts as investment adviser to a series of funds, the largest of which—Rubric Capital Master Fund LP—has the economic right to dividends or sale proceeds exceeding 5 % of QDEL’s shares.

The Schedule 13G is filed under Rule 13d-1(b), signalling a passive investment with no intent to influence control of the issuer. Both reporting persons certify that the shares were acquired in the ordinary course of business and not for activist purposes.

Key ownership details:

• Sole voting/dispositive power: 0 shares
• Shared voting/dispositive power: 4,637,738 shares
• Percent of class: 6.86 %

The amendment updates Rubric’s aggregate holdings but does not announce any purchase or sale terms, financing arrangements, or governance initiatives. Consequently, the disclosure is largely informational, indicating Rubric has crossed—and continues to hold—above the 5 % reporting threshold.

Insights

Securities Analyst

TL;DR: Hedge fund Rubric declares 6.9 % passive QDEL stake; informative but not a strategic shift.

This 13G/A affirms Rubric Capital’s sizable, yet passive, ownership in QuidelOrtho. A holding of nearly 7 % can improve market perception by signalling institutional confidence, but the Rule 13d-1(b) filing type limits expectations of activism. No transaction metrics or cost basis are provided, so valuation impact is indeterminate. Overall, the disclosure enhances float concentration but poses no immediate strategic implications.

Portfolio Manager

TL;DR: Position size suggests conviction, but passive stance limits catalyst; monitor future filings.

Rubric’s 4.6 M-share position consolidates roughly 7 % of QDEL’s equity under one hedge-fund umbrella, tightening liquidity and potentially supporting the share price. However, without board ambitions or activist language, the stake is unlikely to drive operational change. Investors should watch Form 13F and any shift to Schedule 13D for signs of an activist pivot or material trimming of the stake.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 2)

QuidelOrtho Corporation

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

219798105

(CUSIP Number)

06/30/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. 219798105

1

Names of Reporting Persons

Rubric Capital Management LP

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,637,738.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,637,738.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,637,738.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.86 %

12

Type of Reporting Person (See Instructions)

IA, PN

SCHEDULE 13G

CUSIP No. 219798105

1

Names of Reporting Persons

David Rosen

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 0.00
6	Shared Voting Power 4,637,738.00
7	Sole Dispositive Power 0.00
8	Shared Dispositive Power 4,637,738.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

4,637,738.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

6.86 %

12

Type of Reporting Person (See Instructions)

HC, IN

SCHEDULE 13G

Item 1.
(a)	Name of issuer: QuidelOrtho Corporation
(b)	Address of issuer's principal executive offices: 9975 Summers Ridge Road San Diego, CA, 92121
Item 2.
(a)	Name of person filing: This statement is filed by: (i) Rubric Capital Management LP ("Rubric Capital"), the investment adviser to certain investment funds and/or accounts (collectively, the "Rubric Funds") that hold the shares of common stock, par value $0.001 (the "Common Stock") of QuidelOrtho Corporation, a Delaware corporation (the "Issuer") reported herein; and (ii) David Rosen ("Mr. Rosen"), Managing Member of Rubric Capital Management GP LLC, the general partner of Rubric Capital The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons." The filing of this statement should not be construed as an admission that any of the forgoing persons or any Reporting Person is, for the purposes of Section 13 of the Act, the beneficial owner of the Shares reported herein.
(b)	Address or principal business office or, if none, residence: The address of the principal business office of each of the Reporting Persons is 155 East 44th St, Suite 1630, New York, NY 10017.
(c)	Citizenship: Rubric Capital is a Delaware limited partnership. Mr. Rosen is a citizen of the United States of America.
(d)	Title of class of securities: Common Stock, par value $0.001 per share
(e)	CUSIP No.: 219798105
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The percentage set forth in Row (11) of the cover page for each of the Reporting Persons and in Item 4(b) is based on the 67,625,872 shares of Common Stock outstanding as of April 30, 2025, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 30, 2025 filed with the Securities and xchange Commission on May 8, 2025.
(b)	Percent of class: 6.86 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(ii) Shared power to vote or to direct the vote: The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iii) Sole power to dispose or to direct the disposition of: The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
	(iv) Shared power to dispose or to direct the disposition of: The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Item 5.	Ownership of 5 Percent or Less of a Class.
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. See Item 2(a). Rubric Capital Master Fund LP, a Rubric Fund, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, more than 5% of the Common Stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Rubric Capital Management LP

Signature:	/s/ Michael Nachmani
Name/Title:	Michael Nachmani / Chief Operating Officer
Date:	07/09/2025

David Rosen

Signature:	/s/ David Rosen
Name/Title:	David Rosen / Individually
Date:	07/09/2025