MARTEN TRANSPORT LTD — Director's Dealing 2007

May 22, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MARTEN TRANSPORT LTD (mrtn)
CIK: 0000799167
Period of Report: 2007-05-21

Reporting Person: SMITH ROBERT G (Chief Operating Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-05-21	Common Stock	M	1800	$4.36	Acquired	1800	Direct
2007-05-21	Common Stock	S	1800	$18.5	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-05-21	Stock Option (right to buy)	$4.36	M	1800	Disposed	2010-01-24	Common Stock (1800)	Direct

Footnotes

F1: This option has fully vested.