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EXPONENT INC Director's Dealing 2025

Dec 16, 2025

31263_dirs_2025-12-16_7903409b-387d-4a5c-9d8d-14f44c096529.zip

Director's Dealing

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SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: EXPONENT INC (EXPO)
CIK: 0000851520
Period of Report: 2025-12-15

Reporting Person: Corrigan Catherine (Director, President & CEO)

Non-Derivative Transactions

Date Security Code Shares Price A/D Holdings After Ownership
2025-12-15 Common Stock M 3225 $25.405 Acquired 87359 Direct
2025-12-15 Common Stock S 3225 $70.7387 Disposed 84134 Direct

Derivative Transactions

Date Security Exercise Price Code Shares A/D Expiration Underlying Ownership
2025-12-15 Non-Qualified Stock Option (right to buy) $25.405 M 3225 Disposed 2026-07-29 Common Stock (3225) Direct

Footnotes

F1: The stock option becomes exercisable in four equal annual installments.

F2: Not applicable.