Exhibit 99.1 652 Albany Shaker Road, Albany, NY 12211 News Release FOR IMMEDIATE RELEASE: Pioneer Bancorp, Inc. Reports First Quarter 2025 Results Net Income of $5.8 Million Albany, N.Y. – April 30, 2025 – Pioneer Bancorp, Inc. ("Pioneer") (NASDAQ: PBFS), a leading financial institution in New York's Capital Region, today reported the results for the three months ended March 31, 2025. Net income for the three months ended March 31, 2025 was$5.8 million, or $0.23 per basic and diluted share, as compared to ...