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Filing Detail
Form 425 - Prospectuses and communications, business combinations:
SEC Accession No. 0001193125-21-300187
Filing Date
2021-10-15
Accepted
2021-10-15 17:27:03
Documents
1

Document Format Files

Seq Description Document Type Size
1 425 d239516d425.htm 425 32283
  Complete submission text file 0001193125-21-300187.txt   33919
Mailing Address 1301 A STREET TACOMA WA 98402
Business Address 1301 A STREET TACOMA WA 98402 2533051900
COLUMBIA BANKING SYSTEM, INC. (Filed by) CIK: 0000887343 (see all company filings)

IRS No.: 911422237 | State of Incorp.: WA | Fiscal Year End: 1231
Type: 425
SIC: 6022 State Commercial Banks

Mailing Address ONE SW COLUMBIA STREET SUITE 1200 PORTLAND OR 97204
Business Address ONE SW COLUMBIA STREET SUITE 1200 PORTLAND OR 97204 503-727-4100
UMPQUA HOLDINGS CORP (Subject) CIK: 0001077771 (see all company filings)

IRS No.: 931261319 | State of Incorp.: OR | Fiscal Year End: 1231
Type: 425 | Act: 34 | File No.: 001-34624 | Film No.: 211326833
SIC: 6035 Savings Institution, Federally Chartered