COLUMBIA BANKING SYSTEM, INC. — Director's Dealing 2011

Mar 4, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COLUMBIA BANKING SYSTEM INC (COLB)
CIK: 0000887343
Period of Report: 2011-03-03

Reporting Person: SCHMINKEY GARY R (EVP and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-03-03	Common Stock	S	2800	$19.86	Disposed	31253	Direct
2011-03-03	Common Stock	S	333	$19.87	Disposed	30920	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	8118	Indirect