NB Bancorp, Inc.

On June 5, 2025, the Bank entered into a Change in Control Agreement with Jean-Pierre Lapointe, Chief Financial Officer of the Company and the Bank. The terms of the Agreement are identical to the terms of the previous Change in Control Agreement the Bank had entered into with Mr. Lapointe except the new Agreement contains a term of twenty-four (24) months and a severance payment of twenty-four months.

The agreement has an initial term of twenty-four months and renews for a new twenty-four-month term on each anniversary of the agreement, and provides for a lump sum payment to Mr. Lapointe, upon a change in control followed by a termination, equal to two (2) times his annual compensation, defined as base salary plus the annual incentive bonus at the target bonus opportunity amount. Additionally, if Mr. Lapointe participated in the health and dental plans immediately before termination and elected COBRA, Mr. Lapointe would be entitled to a monthly cash payment for twenty-four months or the executive’s COBRA health continuation period, whichever ends earlier, in the amount equal to the employer-monthly contributions that the Company would have paid to provide health and dental insurance to Mr. Lapointe.

The Agreement was filed with the Company’s Current Report on Form 8-K filed on June 5, 2025.