DATA I/O CORP — Director's Dealing 2011

May 23, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: DATA I/O CORP (DAIO)
CIK: 0000351998
Period of Report: 2011-05-20

Reporting Person: HUME FREDERICK R (Director, PRESIDENT AND CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-05-20	Common Stock	M	50000	$2.49	Acquired	203807	Direct
2011-05-20	Common Stock	F	20784	$5.99	Disposed	183023	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-05-21	Non-Qualified Option	$2.49	M	50000	Disposed	2011-06-21	Non-Qualified Option (50000)	Direct

Footnotes

F1: Options vest quarterly over a four year period