X0609 4 2026-08-20 0 0001530979 Honest Company, Inc. HNST 0002016592 Mayle Jonathan false 12130 MILLENNIUM DRIVE SUITE 500 LOS ANGELES CA 90094 0 1 0 0 SVP, Customer Sales 1 Common Stock 2026-08-20 4 S 0 6161 4.99 D 363994 D Common Stock 2026-08-20 4 A 0 105799 0 A 469793 D Pursuant to the approved sell-to-cover plan by the Compensation Committee for all executive officers, shares were sold solely to cover the associated tax liability upon the vesting of a previously granted award of Restricted Stock Units (RSUs). Includes 346,651 RSUs which are payable in an equivalent number of shares of the Issuer's common stock. The RSUs shall vest over a three-year period, with 50% of the RSUs vesting on February 19, 2028, and the remainder vesting on August 19, 2029, in each case subject to the reporting person's Continuous Service (as defined in the Issuer's 2021 Equity Incentive Plan) through each such date. The RSUs are payable in an equivalent number of shares of the Issuer's common stock. Includes 452,450 RSUs which are payable in an equivalent number of shares of the Issuer's common stock. /s/ Brendan Sheehey, Attorney-in-Fact 2026-08-24