COLUMBIA BANKING SYSTEM, INC. — Director's Dealing 2012

Jul 3, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COLUMBIA BANKING SYSTEM INC (COLB)
CIK: 0000887343
Period of Report: 2012-07-03

Reporting Person: DRESSEL MELANIE J (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-07-03	Common Stock	A	1147	$16.911	Acquired	68647	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2408	Indirect
Common Stock	8283	Indirect
Common Stock	51134	Indirect

Footnotes

F1: ESPP Purchase