COLUMBIA BANKING SYSTEM, INC. — Director's Dealing 2013

Jan 4, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COLUMBIA BANKING SYSTEM INC (COLB)
CIK: 0000887343
Period of Report: 2013-01-03

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-01-03	Common Stock	A	110	$16.146	Acquired	68757	Direct

Holdings (Non-Derivative)

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

Footnotes

F1: ESPP Purchase