Exhibit 99.1 FOR IMMEDIATE RELEASE BAXTER REPORTS THIRD-QUARTER 2025 RESULTS DEERFIELD, Ill., OCTOBER 30, 2025 – Baxter International Inc. (NYSE:BAX), a global medtech leader, today reported results for the third quarter of 2025. "I joined Baxter because it's a global healthcare leader – an iconic brand with an essential portfolio that touches more than 350 million patients every year," said Andrew Hider, president and CEO. "In my first weeks, I've seen firsthand the passion and expertise that are at the he ...