EXHIBIT 99.1 Exponent Reports Fourth Quarter and Fiscal Year 2025 Financial Results Total revenues increased 4.2% to $582.0 million during the 52-week fiscal year 2025, as compared to$558.5 million during the 53-week fiscal year 2024. Revenues before reimbursements increased 3.5% to $536.8 million, compared to$518.5 million in fiscal year 2024. Net income was $106.0 million, or$2.07 per diluted share, during fiscal year 2025, as compared to $109.0 million, or$2.11 per diluted share, in fiscal year 2024. ...