144 0002003203 XXXXXXXX LIVE 0001868726 OLAPLEX HOLDINGS, INC. 001-40860 432 PARK AVENUE SOUTH THIRD FLOOR NEW YORK NY 10016 3106910776 Amanda Baldwin Director Officer Common Morgan Stanley Smith Barney LLC Executive Services

200 W Civic Center Dr - 4th Floor Sandy UT 84070

402248 526944.88 669402641 03/12/2026 NASDAQ Common 03/11/2026 Restricted Stock Units Issuer N 402248 03/11/2026 Compensation N Amanda Baldwin

432 PARK AVENUE SOUTH THIRD FLOOR NEW YORK NY 10016

Common 12/12/2025 398560 475834.01 Proposed securities to be sold on March 12, 2026 represent an estimate of shares expected to be sold pursuant to an automatic "sell to cover" transaction to cover tax withholding obligations and fees arising due to the vesting of restricted stock units on March 11, 2026. Such sell to cover transaction does not represent a discretionary trade by the Reporting Person. The actual number of shares sold will depend on the sale price of the Issuer's common stock in such transaction. Securities sold on December 12, 2025 were shares sold pursuant to an automatic "sell to cover" transaction to cover tax withholding obligations and fees arising due to the vesting of restricted stock units on December 11, 2025 and did not represent a discretionary trade by the Reporting Person. Such sale was reported in a Form 4 filed by the Reporting Person on December 15, 2025. 03/12/2026 /s/ John Duffy, attorney-in-fact