Exhibit 99.1 For: Immediate Release Contact: Brett Bauer April 24, 2025 574-235-2000 1st Source Corporation Reports Record First Quarter Results, Cash Dividend Declared QUARTERLY HIGHLIGHTS South Bend, IN - 1st Source Corporation (NASDAQ: SRCE), parent company of 1st Source Bank, today reported record quarterly net income of $37.52 million for the first quarter of 2025, up 19.35$31.44 million the previous quarter and up 27.38% from the $29.46 million reported in the first quarter a year ago. D ...