# EDGAR Filing Document

**Accession Number:** 0001077771
**File Stem:** 0001193125-23-068398
**Filing Date:** 2023-3
**Character Count:** 3123
**Document Hash:** eec1a16f6dc3fd53b24082deb93e50fd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-068398.hdr.sgml**: 20230313

**ACCESSION NUMBER**: 0001193125-23-068398

**CONFORMED SUBMISSION TYPE**: 15-12G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230313

**DATE AS OF CHANGE**: 20230313

**EFFECTIVENESS DATE**: 20230313

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** UMPQUA HOLDINGS CORP
- **CENTRAL INDEX KEY:** 0001077771
- **STANDARD INDUSTRIAL CLASSIFICATION:** SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
- **IRS NUMBER:** 931261319
- **STATE OF INCORPORATION:** OR
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-34624
- **FILM NUMBER:** 23725580

**BUSINESS ADDRESS:**
- **STREET 1:** ONE SW COLUMBIA STREET
- **STREET 2:** SUITE 1200
- **CITY:** PORTLAND
- **STATE:** OR
- **ZIP:** 97204
- **BUSINESS PHONE:** 503-727-4100

**MAIL ADDRESS:**
- **STREET 1:** ONE SW COLUMBIA STREET
- **STREET 2:** SUITE 1200
- **CITY:** PORTLAND
- **STATE:** OR
- **ZIP:** 97204

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**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**WASHINGTON, D.C. 20549** 

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**FORM 15** 

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**CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION** 

**UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934** 

**OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d)** 

**OF THE SECURITIES EXCHANGE ACT OF 1934** 

**Commission File Number: 001-34624** 

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## UMPQUA HOLDINGS CORPORATION
**(Exact name of registrant as specified in its charter)** 

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**c/o Columbia Banking System, Inc.** 

**1301 A Street** 

**Tacoma, Washington 98402-4200** 

**(253) 305-1900** 

**(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)** 

**Common Stock, no par value per share** 

**(Title of each class of securities covered by this Form)** 

**None** 

**(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)** 

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Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

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| | |
|:---|:---|
|  Rule 12g-4(a)(1) | ☒ |
|  Rule 12g-4(a)(2) | ☐ |
|  Rule 12h-3(b)(1)(i) | ☒ |
|  Rule 12h-3(b)(1)(ii) | ☐ |
|  Rule 15d-6 | ☐ |
|  Rule 15d-22(b) | ☐ |

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Approximate number of holders of record as of the certification or notice date:

Common Stock, no par value per share: 0

Pursuant to the requirements of the Securities Exchange Act of 1934, Columbia Banking System, Inc., as successor by merger to Umpqua Holdings Corporation, has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

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| | | |
|:---|:---|:---|
| Date: March 13, 2023 | **COLUMBIA BANKING SYSTEM, INC.**<br> (as successor by merger to Umpqua Holdings Corporation) | **COLUMBIA BANKING SYSTEM, INC.**<br> (as successor by merger to Umpqua Holdings Corporation) |
|  | By: | /s/ Kumi Yamamoto Baruffi |
|  |  | Name: Kumi Yamamoto Baruffi |
|  |  | Title: General Counsel |

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