HAYW

SEC source: 0001834622-23-000049 · wk-form4_1689197462.xml · nonDerivative · entry 1

HOLLERAN KEVIN · CIK 0001851021 · Director · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 476,321

F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $13.00 to $13.295, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001834622-23-000046 · wk-form4_1688157184.xml · derivative · entry 3

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,140,375

Underlying: Common Stock · 30,000 shares

Expires 2030-04-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: This option is vested as to 80% of the initial underlying shares of Common Stock. The option vests as to the remaining 20% of the initial underlying shares of Common Stock in two equal installments, on April 20, 2024 and April 20, 2025.

SEC source: 0001834622-23-000046 · wk-form4_1688157184.xml · nonDerivative · entry 2

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 211,862

F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $12.50 to $12.675, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001834622-23-000046 · wk-form4_1688157184.xml · nonDerivative · entry 1

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 241,862

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001834622-23-000041 · wk-form4_1685997161.xml · derivative · entry 3

Soucy Arthur L · CIK 0001461045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 116,236

Underlying: Common Stock · 5,000 shares

Expires 2027-08-04

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The options vested at various dates and became fully vested and exercisable on August 4, 2022.

SEC source: 0001834622-23-000041 · wk-form4_1685997161.xml · nonDerivative · entry 2

Soucy Arthur L · CIK 0001461045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,891

F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $10.565 to $10.675, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. The net proceeds from the sale of 10,712 shares of the 15,712 shares sold were used to fund the exercise price of the 5,000 options exercised and the tax liability arising from the exercise of such options.

SEC source: 0001834622-23-000041 · wk-form4_1685997161.xml · nonDerivative · entry 1

Soucy Arthur L · CIK 0001461045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,603

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001834622-23-000033 · wf-form4_168452828611123.xml · nonDerivative · entry 1

Soucy Arthur L · CIK 0001461045 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,603

F1 · shares: Represents restricted stock units granted to the Reporting Person. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest on December 31, 2023, provided that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000034 · wf-form4_168452836113926.xml · nonDerivative · entry 1

Felice Stephen J · CIK 0001334802 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 277,759

F1 · shares: Represents restricted stock units granted to the Reporting Person. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest on December 31, 2023.

SEC source: 0001104659-23-059702 · tm2315516-1_4seq1.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 836,843

F2 · kind: Shares sold by the reporting person were part of the underwriter's complete exercise of the option to purchase an additional 3,150,000 shares of the Issuer's common stock in connection with the Offering.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-23-059702 · tm2315516-1_4seq1.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 13,557,066

F2 · kind: Shares sold by the reporting person were part of the underwriter's complete exercise of the option to purchase an additional 3,150,000 shares of the Issuer's common stock in connection with the Offering.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-23-059702 · tm2315516-1_4seq1.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 955,266

F1 · kind: Shares sold by the reporting person were part of an underwritten secondary offering (the "Offering") of 21,000,000 shares of the Issuer's common stock which closed on May 10, 2023.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-23-059702 · tm2315516-1_4seq1.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 15,475,537

F1 · kind: Shares sold by the reporting person were part of an underwritten secondary offering (the "Offering") of 21,000,000 shares of the Issuer's common stock which closed on May 10, 2023.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001834622-23-000027 · wf-form4_167908524100505.xml · nonDerivative · entry 1

Soucy Arthur L · CIK 0001461045 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,955

SEC source: 0001104659-23-029527 · tm238661-1_4seq1.xml · nonDerivative · entry 4

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 1,744,750

F2 · kind: Shares sold by the reporting person were part of the underwriter's complete exercise of the option to purchase an additional 2,400,000 shares of the Issuer's common stock in connection with the Offering.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-23-029527 · tm238661-1_4seq1.xml · nonDerivative · entry 3

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 28,265,346

F2 · kind: Shares sold by the reporting person were part of the underwriter's complete exercise of the option to purchase an additional 2,400,000 shares of the Issuer's common stock in connection with the Offering.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-23-028583 · tm238397-1_4seq1.xml · nonDerivative · entry 1

Alberta Investment Management Corp · CIK 0001463559 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 17,247,765

F1 · ownership.nature: These shares are owned directly by PE16PX Rocky Mountain Ltd. and PE16GV Rocky Mountain Ltd. All of the interests of these two entities are held by the reporting person as bare trustee on behalf of its clients.

SEC source: 0001834622-23-000021 · wf-form4_167788247666860.xml · nonDerivative · entry 2

Emory Billy · CIK 0001925483 · VP, Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,890

F2 · kind: Represents shares of Common Stock that the reporting person forfeited to the Company to satisfy tax withholding obligations incurred upon the vesting of restricted stock units. No shares were sold by the reporting person.

SEC source: 0001104659-23-029527 · tm238661-1_4seq1.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 1,834,977

F1 · kind: Shares sold by the reporting person were part of an underwritten secondary offering (the "Offering") of 16,000,000 shares of the Issuer's common stock which closed on March 3, 2023.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-23-029527 · tm238661-1_4seq1.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 29,727,039

F1 · kind: Shares sold by the reporting person were part of an underwritten secondary offering (the "Offering") of 16,000,000 shares of the Issuer's common stock which closed on March 3, 2023.

F3 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F4 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F5 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and the other stockholders named therein pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them. By virtue of the Stockholders' Agreement, the CCMP Investors and MSD may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F6 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001834622-23-000023 · wf-form4_167788254815395.xml · derivative · entry 5

HOLLERAN KEVIN · CIK 0001851021 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 312,897

Underlying: Common Stock · 312,897 shares

Expires 2033-03-02

F2 · shares: Represents options to purchase Common Stock granted to the Reporting Person under the 2021 Plan.

F3 · derivative.exercise_date: This option vests as to the underlying shares of Common Stock in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000023 · wf-form4_167788254815395.xml · nonDerivative · entry 1

HOLLERAN KEVIN · CIK 0001851021 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 529,231

F1 · shares: Represents restricted stock units granted to the Reporting Person under the Hayward Holdings, Inc. 2021 Equity Incentive Plan (the "2021 Plan"). Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000025 · wf-form4_167788263655017.xml · derivative · entry 2

ROETKEN RICK · CIK 0001850036 · President, North America

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,197

Underlying: Common Stock · 59,197 shares

Expires 2033-03-02

F2 · shares: Represents options to purchase Common Stock granted to the Reporting Person under the 2021 Plan.

F3 · derivative.exercise_date: This option vests as to the underlying shares of Common Stock in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000025 · wf-form4_167788263655017.xml · nonDerivative · entry 1

ROETKEN RICK · CIK 0001850036 · President, North America

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 188,784

F1 · shares: Represents restricted stock units granted to the Reporting Person under the Hayward Holdings, Inc. 2021 Equity Incentive Plan (the "2021 Plan"). Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000024 · wf-form4_167788258664133.xml · derivative · entry 2

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,332

Underlying: Common Stock · 91,332 shares

Expires 2033-03-02

F2 · shares: Represents options to purchase Common Stock granted to the Reporting Person under the 2021 Plan.

F3 · derivative.exercise_date: This option vests as to the underlying shares of Common Stock in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000024 · wf-form4_167788258664133.xml · nonDerivative · entry 1

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 211,862

F1 · shares: Represents restricted stock units granted to the Reporting Person under the Hayward Holdings, Inc. 2021 Equity Incentive Plan (the "2021 Plan"). Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000018 · wf-form4_167788238800664.xml · derivative · entry 2

BLASCO FERNANDO · CIK 0001850028 · VP&GM, Europe & Rest of World

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,809

Underlying: Common Stock · 9,809 shares

Expires 2033-03-02

F2 · shares: Represents options to purchase Common Stock granted to the Reporting Person under the 2021 Plan.

F3 · derivative.exercise_date: This option vests as to the underlying shares of Common Stock in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000018 · wf-form4_167788238800664.xml · nonDerivative · entry 1

BLASCO FERNANDO · CIK 0001850028 · VP&GM, Europe & Rest of World

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,857

F1 · shares: Represents restricted stock units granted to the Reporting Person under the Hayward Holdings, Inc. 2021 Equity Incentive Plan (the "2021 Plan"). Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000026 · wf-form4_167788267625350.xml · nonDerivative · entry 1

Soucy Arthur L · CIK 0001461045 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,308

F1 · shares: Represents restricted stock units granted to the Reporting Person. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest on December 31, 2023, provided that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000022 · wf-form4_167788252082499.xml · nonDerivative · entry 1

Felice Stephen J · CIK 0001334802 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 275,493

F1 · shares: Represents restricted stock units granted to the Reporting Person. Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest on December 31, 2023, provided that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000019 · wf-form4_167788242264230.xml · derivative · entry 3

Canning Susan M. · CIK 0001752466 · SVP, CLO, Corporate Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,449

Underlying: Common Stock · 56,449 shares

Expires 2033-03-02

F2 · shares: Represents options to purchase Common Stock granted to the Reporting Person under the 2021 Plan.

F3 · derivative.exercise_date: This option vests as to the underlying shares of Common Stock in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000019 · wf-form4_167788242264230.xml · nonDerivative · entry 1

Canning Susan M. · CIK 0001752466 · SVP, CLO, Corporate Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,384

F1 · shares: Represents restricted stock units granted to the Reporting Person under the Hayward Holdings, Inc. 2021 Equity Incentive Plan (the "2021 Plan"). Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000021 · wf-form4_167788247666860.xml · derivative · entry 3

Emory Billy · CIK 0001925483 · VP, Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,685

Underlying: Common Stock · 12,685 shares

Expires 2033-03-02

F3 · shares: Represents options to purchase Common Stock granted to the Reporting Person under the 2021 Plan.

F4 · derivative.exercise_date: This option vests as to the underlying shares of Common Stock in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000021 · wf-form4_167788247666860.xml · nonDerivative · entry 1

Emory Billy · CIK 0001925483 · VP, Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,260

F1 · shares: Represents restricted stock units granted to the Reporting Person under the Hayward Holdings, Inc. 2021 Equity Incentive Plan (the "2021 Plan"). Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000020 · wf-form4_167788244550115.xml · derivative · entry 2

Collins John Alec · CIK 0001938296 · SVP Chief Supply Chain Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 47,041

Underlying: Common Stock · 47,041 shares

Expires 2033-03-02

F2 · shares: Represents options to purchase Common Stock granted to the Reporting Person under the 2021 Plan.

F3 · derivative.exercise_date: This option vests as to the underlying shares of Common Stock in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000020 · wf-form4_167788244550115.xml · nonDerivative · entry 1

Collins John Alec · CIK 0001938296 · SVP Chief Supply Chain Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,542

F1 · shares: Represents restricted stock units granted to the Reporting Person under the Hayward Holdings, Inc. 2021 Equity Incentive Plan (the "2021 Plan"). Each restricted stock unit represents the contingent right to receive one share of the Issuer's common stock, par value $0.001 per share. The restricted stock units vest in three equal installments, on each of March 2, 2024, March 2, 2025 and March 2, 2026, provided generally that the Reporting Person remains in continuous service with the Issuer through the vesting date.

SEC source: 0001834622-23-000005 · wf-form4_167545818510359.xml · derivative · entry 3

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,170,375

Underlying: Common Stock · 35,000 shares

Expires 2030-04-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · derivative.exercise_date: This option is vested as to 70% of the initial underlying shares of Common Stock. The option vests as to the remaining 30% of the initial underlying shares of Common Stock in three equal installments, on each of April 20, 2023, April 20, 2024 and April 20, 2025.

SEC source: 0001834622-23-000005 · wf-form4_167545818510359.xml · nonDerivative · entry 2

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,282

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $14.50 to $14.965, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001834622-23-000005 · wf-form4_167545818510359.xml · nonDerivative · entry 1

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 210,282

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

SEC source: 0001834622-23-000004 · wf-form4_167511313832427.xml · derivative · entry 3

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,205,375

Underlying: Common Stock · 7,459 shares

Expires 2030-04-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · derivative.exercise_date: This option is vested as to 70% of the initial underlying shares of Common Stock. The option vests as to the remaining 30% of the initial underlying shares of Common Stock in three equal installments, on each of April 20, 2023, April 20, 2024 and April 20, 2025.

SEC source: 0001834622-23-000004 · wf-form4_167511313832427.xml · nonDerivative · entry 2

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,282

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $13.00 to $13.22, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001834622-23-000004 · wf-form4_167511313832427.xml · nonDerivative · entry 1

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 182,741

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

SEC source: 0001834622-23-000002 · wf-form4_167459756364697.xml · derivative · entry 3

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,212,834

Underlying: Common Stock · 52,541 shares

Expires 2030-04-20

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F3 · derivative.exercise_date: This option is vested as to 70% of the initial underlying shares of Common Stock. The option vests as to the remaining 30% of the initial underlying shares of Common Stock in three equal installments, on each of April 20, 2023, April 20, 2024 and April 20, 2025.

SEC source: 0001834622-23-000002 · wf-form4_167459756364697.xml · nonDerivative · entry 2

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 175,282

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $12.80 to $13.195, inclusive. The Reporting Person undertakes to provide to the Company, any security holder of the Company or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range.

SEC source: 0001834622-23-000002 · wf-form4_167459756364697.xml · nonDerivative · entry 1

Jones Eifion · CIK 0001850060 · Senior Vice President and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 227,823

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · kind: The reported transaction was effected pursuant to a Rule 10b5-1 trading plan.

SEC source: 0001104659-22-119887 · tm2230830-1_4seq1.xml · nonDerivative · entry 2

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III (Employee), L.P.

Disclosed balance after: 2,436,489

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and Alberta Investment Management Corporation ("AIMCo") pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them, and AIMCo has also agreed to certain restrictions on the transfer of its shares of Common Stock. By virtue of the Stockholders' Agreement, the CCMP Investors, MSD and AIMCo may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F4 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD and AIMCo except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-22-119887 · tm2230830-1_4seq1.xml · nonDerivative · entry 1

CCMP Capital, LP · CIK 0001372939 · 10% owner

CCMP Capital GP, LLC · CIK 0001674350 · 10% owner

CCMP Capital Investors III, L.P. · CIK 0001569775 · 10% owner

CCMP Capital Investors III (Employee), L.P. · CIK 0001581003 · 10% owner

CCMP Capital Associates III, L.P. · CIK 0001718034 · 10% owner

CCMP Capital Associates III GP, LLC · CIK 0001718029 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · By CCMP Capital Investors III, L.P.

Disclosed balance after: 39,471,656

F1 · ownership.nature: CCMP Capital Associates III, L.P. ("CCMP Capital Associates") is the general partner of each of CCMP Capital Investors III, L.P. ("CCMP Capital Investors"), and CCMP Capital Investors III (Employee), L.P. ("CCMP Employee" and together with CCMP Capital Investors, the "CCMP Investors"). The general partner of CCMP Capital Associates is CCMP Capital Associates III GP, LLC ("CCMP Capital Associates GP").

F2 · ownership.nature: CCMP Capital Associates GP is wholly owned by CCMP Capital, LP. The general partner of CCMP Capital, LP is CCMP Capital GP, LLC. CCMP Capital GP, LLC ultimately exercises voting and dispositive power over the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. As a result, each of CCMP Capital Associates, CCMP Capital Associates GP, CCMP Capital, LP and CCMP Capital GP, LLC may be deemed to share beneficial ownership with respect to certain of the shares of common stock of Hayward Holdings, Inc. held by the CCMP Investors. Each of the reporting persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

F3 · ownership.nature: In connection with the consummation of the initial public offering of the Issuer's common stock, par value $0.001 per share ("Common Stock"), the CCMP Investors entered into an Amended and Restated Stockholders' Agreement ("Stockholders' Agreement") with the Issuer and certain affiliates of MSD Partners, L.P. ("MSD") and Alberta Investment Management Corporation ("AIMCo") pursuant to which the CCMP Investors and MSD have agreed to coordinate with respect to the timing and manner of disposition of shares of the Common Stock held by them, and AIMCo has also agreed to certain restrictions on the transfer of its shares of Common Stock. By virtue of the Stockholders' Agreement, the CCMP Investors, MSD and AIMCo may be deemed to be members of a group for the purposes of Section 13(d) of the Securities Exchange Act of 1934 (the "Act").

F4 · ownership.nature: In addition, each reporting person may be deemed to be a member of a group for the purposes of Section 13(d) of the Act. Each reporting person disclaims any pecuniary interest in any shares of Common Stock held by the group with MSD and AIMCo except as reported as beneficially owned by the reporting persons in this Form 4.

SEC source: 0001104659-22-119935 · tm2214838-1_4.xml · nonDerivative · entry 1

Alberta Investment Management Corp · CIK 0001463559 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 22,901,636

F1 · ownership.nature: These shares are owned directly by PE16PX Rocky Mountain Ltd. and PE16GV Rocky Mountain Ltd. All of the interests of these two entities are held by the reporting person as bare trustee on behalf of its clients.

SEC source: 0001834622-22-000101 · wf-form4_166733621330483.xml · nonDerivative · entry 1

Emory Billy · CIK 0001925483 · VP, Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,558

F1 · kind: Represents shares of Common Stock that the reporting person forfeited to the Company to satisfy tax withholding obligations incurred upon the vesting of restricted stock units. No shares were sold by the reporting person.

SEC source: 0001834622-22-000094 · wf-form4_165999299368617.xml · nonDerivative · entry 1

Canning Susan M. · CIK 0001752466 · SVP, CLO, Corporate Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,936

F1 · kind: Represents shares of Common Stock that the reporting person forfeited to the Company to satisfy tax withholding obligations incurred upon the vesting of restricted stock units. No shares were sold by the reporting person.