Exhibit A
JOINT FILING AGREEMENT
The undersigned agree that this Schedule 13G dated June 11, 2025 relating to the Common Stock, par value $0.01 per share, of NB Bancorp, Inc. shall be filed on behalf of the undersigned.
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PERTENTO PARTNERS LLP
By: /s/ Eduardo Marques | |
| Name: Eduardo Marques | |
| Title: Managing Partner |
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EDUARDO MARQUES
By: /s/ Eduardo Marques |