Exponent Investor Presentation

Key Metrics - YTD (as of 9/30) ($ Millions, except where noted) YTD as of 9/30/2022 YTD as of 9/30/2023 Revenues Before Reimbursements Revenues EBITDA1 EBITDA Margin² (%) Net Income Earnings per share ($) Average diluted shares outstanding (Millions) % Change 351.2 383.3 9% 385.9 413.9 7% 106.1 107.1 1% 30.2% 27.9% 79.8 79.4 -0.5% 1.52 1.54 1% 52.5 51.7 -2% Billable hours 1,110,591 1,153,227 4% Utilization, technical 75% 70% Realized rate increase 3% 5% Technical full time equivalent employees 943 1,059 12% 1 Refer to non-GAAP reconciliation on slide 22 2EBITDA Margin % = EBITDA/Revenues before Reimbursements Exponent 21

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