Exhibit 99.1 Union Pacific Reports Second Quarter 2025 Results * Adjusted diluted earnings per share and adjusted operating ratio are considered non-GAAP financial measures. See attached supplemental schedule of non-GAAP measures for a reconciliation to GAAP. -more- • Diluted earnings per share (EPS) of $3.15 and adjusted diluted EPS* of$3.03 • Operating ratio (OR) of 59.0% and adjusted OR* of 58.1% • Revenue carloads up 4% • Operating revenue of $6.2 billion grew 2% driven by higher volume and solid core ...