COLUMBIA BANKING SYSTEM, INC. — Director's Dealing 2020

Jan 3, 2020

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: COLUMBIA BANKING SYSTEM, INC. (COLB)
CIK: 0000887343
Period of Report: 2019-12-31

Reporting Person: Robbins Hadley S (Director, PRESIDENT & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-12-31	Common Stock	J	14485	—	Disposed	22703	Direct
2019-12-31	Common Stock	J	6695	$40.685	Acquired	29398	Direct
2019-12-31	Common Stock	F	2635	$40.685	Disposed	26763	Direct

Footnotes

F1: Unvested Restricted Stock - Cancelled for modification on Retirement.

F2: Shares issued as modification of outstanding unvested time based Restricted Stock Awards, upon retirement.