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Filing metadata

Accession number: 0001550429-12-000001
Form type: Form 3
Filer: COLUMBIA BANKING SYSTEM INC
CIK: CIK 887343
Filed: May 21, 2012
Reporting period: May 10, 2012
Description: Initial ownership

Documents

0001550429-12-000001-index.htm

Complete submission

0001550429-12-000001.txt

directory listing

Filed by

COLUMBIA BANKING SYSTEM INC