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* MSD Partners, L.P. (Last) (First) (Middle) ONE VANDERBILT AVENUE, 26TH FLOOR (Street) NEW YORK NY 10017 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Hayward Holdings, Inc. [ HAYW ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 08/01/2024
	4. If Amendment, Date of 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

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	08/01/2024		J(1)		6,534,219	D	$0	65,003,866	I	See Footnotes(2)

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

1. Name and Address of Reporting Person* MSD Partners, L.P. (Last) (First) (Middle) ONE VANDERBILT AVENUE, 26TH FLOOR (Street) NEW YORK NY 10017 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* MSD Aqua Partners, LLC (Last) (First) (Middle) ONE VANDERBILT AVENUE, 26TH FLOOR (Street) NEW YORK NY 10017 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Pro rata distribution by MSD Aqua Partners, LLC ("MSD Aqua Partners") to its members for no consideration.

2. This statement is jointly filed by and on behalf of each of MSD Partners, L.P. ("MSD Partners") and MSD Aqua Partners. MSD Aqua Partners is the record holder and direct beneficial owner of the shares of the issuer's common stock. MSD Partners is the manager of MSD Aqua Partners and may be deemed to beneficially own securities owned by MSD Aqua Partners. MSD Partners (GP), LLC ("MSD GP", and together with MSD Partners and MSD Aqua Partners, the "MSD Parties") is the general partner of MSD Partners and may be deemed to beneficially own securities owned by MSD Partners. Gregg R. Lemkau maintains investment discretion over this investment and therefore may be deemed to beneficially own securities beneficially owned by MSD GP. Mr. Lemkau disclaims beneficial ownership of such securities except to the extent of any pecuniary interest therein.

	MSD PARTNERS, L.P. By: MSD Partners (GP), LLC Its: General Partner By: /s/ Robert K. Simonds Name: Robert K. Simonds Title: Authorized Signatory	08/02/2024
	MSD AQUA PARTNERS, LLC By: MSD Partners, L.P. Its: Manager By: MSD Partners (GP), LLC Its: General Partner By: /s/ Robert K. Simonds Name: Robert K. Simonds Title: Authorized Signatory	08/02/2024
	** 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).
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