EXPONENT INC — Director's Dealing 2025

Sep 16, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: EXPONENT INC (EXPO)
CIK: 0000851520
Period of Report: 2025-09-15

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-09-15	Common Stock	M	2380	$29.05	Acquired	84432	Direct
2025-09-15	Common Stock	S	1679	$70.1806	Disposed	82753	Direct
2025-09-15	Common Stock	M	3226	$25.405	Acquired	85979	Direct
2025-09-15	Common Stock	S	3226	$69.7673	Disposed	82753	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-09-15	Non-Qualified Stock Option (right to buy)	$25.405	M	3226	Disposed	2026-07-29	Common Stock (3226)	Direct
2025-09-15	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.