EXPONENT INC — Director's Dealing 2010

Dec 28, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: EXPONENT INC (EXPO)
CIK: 0000851520
Period of Report: 2010-12-23

Reporting Person: JOHNSTON PAUL R (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-12-23	Common Stock	M	5000	$7.675	Acquired	70207	Direct
2010-12-23	Common Stock	S	5000	$37.8083	Disposed	65207	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-12-23	Non-Qualified Stock Option (right to buy)	$7.675	M	5000	Disposed	2013-07-14	Common Stock (5000)	Direct

Footnotes

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

F2: Not applicable.