On July 16, 2025, NB Bancorp, Inc. announced it has completed its stock repurchase program, acquiring 2,028,522 shares at an average price of $17.96 each, totaling approximately 5% of outstanding shares. Since January 2025, the company has repurchased 4,163,809 shares, which is 9.8% of its IPO shares, at an average price of $18.52, with a tangible book value per share of $18.20 as of March 31, 2025.