EXPONENT INC — Director's Dealing 2025

Nov 18, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: EXPONENT INC (EXPO)
CIK: 0000851520
Period of Report: 2025-11-17

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-11-17	Common Stock	M	3225	$25.405	Acquired	86654	Direct
2025-11-17	Common Stock	S	3225	$70.205	Disposed	83429	Direct
2025-11-17	Common Stock	M	2380	$29.05	Acquired	85809	Direct
2025-11-17	Common Stock	S	1675	$70.7387	Disposed	84134	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-11-17	Non-Qualified Stock Option (right to buy)	$25.405	M	3225	Disposed	2026-07-29	Common Stock (3225)	Direct
2025-11-17	Non-Qualified Stock Option (right to buy)	$29.05	M	2380	Disposed	2027-02-16	Common Stock (2380)	Direct

Footnotes

F1: Stock sale was to cover the option exercise price and taxes.

F2: The stock option becomes exercisable in four equal annual installments.

F3: Not applicable.