X0508 4 2025-02-28 0001769617 HarborOne Bancorp, Inc. HONE 0001973449 Grable Brent W. C/O HARBORONE BANCORP BROCKTON MA 02301 1 SVP, CHIEF INFORMATION OFFICER 0 Common Stock 2025-02-28 4 F 0 332 11.50 D 2542 D Common Stock 2025-03-03 4 A 0 3114 0 A 5656 D Shares withheld by Issuer to cover withholding taxes associated with the vesting of restricted shares. Acquisition represents award of restricted stock for no consideration. The restricted stock award vests in three equal annual installments beginning on March 3, 2026. /s/ Joseph F. Casey, attorney-in-fact 2025-03-03