Exhibit 99.1 News Release - For More Information, Contact: For Immediate Release Michael E. McFarland, President and Chief April 29, 2024 Executive Officer (617-471-0750) CFSB BANCORP, INC. ANNOUNCES FISCAL THIRD QUARTER AND YEAR-TO-DATE 2024 FINANCIAL RESULTS QUINCY, Massachusetts, April 29, 2024 – CFSB Bancorp, Inc. (the “Company”) (NASDAQ Capital Market: CFSB), the holding company for Colonial Federal Savings Bank (the “Bank”), today announced a net loss of $40,000, or $0.01 per basic and diluted share, ...