Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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

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1. Name and Address of Reporting Person * ADVENT INTERNATIONAL, L.P. 2. Issuer Name and Ticker or Trading Symbol OLAPLEX HOLDINGS, INC. [OLPX] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) PRUDENTIAL TOWER, 800 BOYLSTON STREET, SUITE 3300 3. Date of Earliest Transaction (Month/Day/Year) 07/07/2026 (Street) BOSTON, MA 02199-8069 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) 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 07/07/2026 U 499,468,771(1) D $2.06(2) 0 I See Notes(1)(3)(4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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 of Derivative Security: 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ADVENT INTERNATIONAL, L.P. PRUDENTIAL TOWER 800 BOYLSTON STREET, SUITE 3300 BOSTON, MA 02199-8069	X	X
Advent International GPE IX-A SCSp PRUDENTIAL TOWER 800 BOYLSTON STREET, SUITE 3300 BOSTON, MA 02199-8069	X	X
Advent International GPE IX-D SCSp PRUDENTIAL TOWER 800 BOYLSTON STREET, SUITE 3300 BOSTON, MA 02199-8069	X	X
Advent International GPE IX-E SCSp PRUDENTIAL TOWER 800 BOYLSTON STREET, SUITE 3300 BOSTON, MA 02199-8069	X	X
Advent International GPE IX Strategic Investors SCSp PRUDENTIAL TOWER 800 BOYLSTON STREET, SUITE 3300 BOSTON, MA 02199-8069	X	X
GPE IX GP S.a.r.l. PRUDENTIAL TOWER 800 BOYLSTON STREET, SUITE 3300 BOSTON, MA 02199-8069	X	X

Signatures

ADVENT INTERNATIONAL, L.P., By: /s/ Neil Crawford, Name: Neil Crawford, Title: Senior Director		07/07/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	See Exhibit 99.1 for text of footnote (1).
(2)	See Exhibit 99.1 for text of footnote (2).
(3)	See Exhibit 99.1 for text of footnote (3).
(4)	See Exhibit 99.1 for text of footnote (4).
Remarks: David Mussafer, the Chairman and Managing Partner of Advent, Tricia Glynn, a Managing Director of Advent and Michael White, a Managing Director of Advent (together, the "Advent Directors"), each serve on the board of directors of the Issuer, and have been deputized to represent the Reporting Persons on the board of directors. By virtue of the Advent Directors' representation, for purposes of Section 16 of the Securities Exchange Act of 1934, each of the Reporting Persons may be deemed directors by deputization of the Issuer. The Advent Directors have filed separate Section 16 reports disclosing securities of the Issuer that they may be deemed to beneficially own for Section 16 purposes. Exhibit 99.1 (Footnotes to Form 4) is incorporated by reference. Form 2 of 3: This Form 4 is the third of three Forms 4 being filed relating to the same event. The Form 4 has been split into multiple filings because there are more than 10 Reporting Persons total, and the SEC's EDGAR filing system limits a single Form 4 to a maximum of 10 Reporting Persons. Each Form 4 will be filed by Designated Filer Advent International, L.P.

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