Exhibit 99.1 Old National Bancorp Reports Third Quarter 2025 Results Evansville, Ind. (October 22, 2025) Old National Bancorp (NASDAQ: ONB) reports 3Q25 net income applicable to common shares of $178.5 million, diluted EPS of$0.46; $231.3 million and$0.59 on an adjusted basis, respectively. 1 CEO COMMENTARY: "Old National's outstanding quarterly results reflect our continued focus on the fundamentals and the benefits from our recent partnership with Bremer Bank," said Chairman and CEO Jim Ryan. "Furthermo ...