HAYW · Hayward Holdings, Inc.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 10, 2026

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 10, 2026

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $17.0600 to $17.4050, 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 reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $17.000 to $17.1450, 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 reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

Represents an ad hoc retention award of restricted stock units granted to the Reporting Person under Hayward Holdings, Inc. 2021 Equity 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 two equal installments, on each of June 6, 2029 and June 6, 2031 provided generally that the Reporting Person remains in continuous service with Issuer through the vesting date.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $13.66 to $13.9850, 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.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

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 the earlier of (i) May 21, 2027 and (ii) the date of the 2027 annual meeting of stockholders of the Issuer, provided that the Reporting Person remains in continuous service with the Issuer's board of directors through the vesting date.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $14.43 to $14.64, 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.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

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, 2026, provided that the Reporting Person remains in continuous service with the Issuer through the vesting date.

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, 2026, provided that the Reporting Person remains in continuous service with the Issuer through the vesting date.

Shares purchased pursuant to the Issuer's qualified employee stock purchase plan under Section 423 of the Internal Revenue Code.

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, 2026, provided that the Reporting Person remains in continuous service with the Issuer through the vesting date.

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, 2026, provided that the Reporting Person remains in continuous service with the Issuer through the vesting date.

The reported transactions on the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The reported transactions on the Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $13.2100 to $13.4950, 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 transactions reported on this Form 4 were effected pursuant to the Rule 10b5-1 trading plan adopted by the Reporting Person on December 8, 2025.

The transactions reported on this Form 4 were effected pursuant to the Rule 10b5-1 trading plan adopted by the Reporting Person on December 8, 2025.

This option became vested as to all the underlying shares of Common Stock on April 20, 2025.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

The transactions reported on this Form 4 were effected pursuant to the Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.

The price reported is a weighted average price. These shares were sold in multiple transactions ranging from $15.4750 to $15.8800, 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.

Represents shares withheld to satisfy tax withholding obligations arising out of the vesting of restricted stock units.

Represents an award of performance based restricted stock units originally granted on March 2, 2023, the payout of which was subject to the achievement of certain performance criteria based on adjusted EBITDA and return on gross invested capital during a three-year performance period. On March 2, 2026, the Compensation Committee of the Board of Directors certified the performance achievement over the measurement period and authorized the vesting of the award. The restricted stock units converted into shares of common stock on a one-for-one basis.

Represents an award of performance based restricted stock units originally granted on March 2, 2023, the payout of which was subject to the achievement of certain performance criteria based on adjusted EBITDA and return on gross invested capital during a three-year performance period. On March 2, 2026, the Compensation Committee of the Board of Directors certified the performance achievement over the measurement period and authorized the vesting of the award. The restricted stock units converted into shares of common stock on a one-for-one basis.

Includes 268 shares of common stock transferred to the Reporting Person's direct ownership in a transaction exempt from reporting under Rule 16a-13.

Represents an award of performance based restricted stock units originally granted on March 2, 2023, the payout of which was subject to the achievement of certain performance criteria based on adjusted EBITDA and return on gross invested capital during a three-year performance period. On March 2, 2026, the Compensation Committee of the Board of Directors certified the performance achievement over the measurement period and authorized the vesting of the award. The restricted stock units converted into shares of common stock on a one-for-one basis.

Represents shares withheld to satisfy tax withholding obligations arising out of the delivery of the Common Stock underlying the performance based restricted stock units described in footnote 1 above.

Represents shares withheld to satisfy tax withholding obligations arising out of the delivery of the Common Stock underlying the performance based restricted stock units described in footnote 1 above.