COLUMBIA BANKING SYSTEM, INC. — Director's Dealing 2017

Dec 5, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COLUMBIA BANKING SYSTEM INC (COLB)
CIK: 0000887343
Period of Report: 2017-12-01

Reporting Person: BARUFFI KUMI YAMAMOTO (EVP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-12-01	Common	F	206	$46.31	Disposed	9302	Direct