secwatch / observer

COLUMBIA BANKING SYSTEM, INC. — fact timeline

Source-grounded facts extracted from COLUMBIA BANKING SYSTEM, INC.'s SEC 8-K filings across all families, newest first. Each cites a verbatim SEC excerpt.

COLB COLUMBIA BANKING SYSTEM, INC. JSON

Simone Lagomarsino was appointed as Director at COLUMBIA BANKING SYSTEM, INC..

“On July 28, 2026, the Board of Directors of Columbia Banking System, Inc. (the “Company”) appointed Simone Lagomarsino to the Board of Directors of the Company and, subject to approval by the Oregon Department of Consumer and Financial Services Division of Financial Regulation, the Board of Directors of Columbia Bank, the Company’s wholly owned subsidiary, effective as of September 1, 2026 (the “Effective Date”).”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Advisory (non-binding) resolution to ratify the appointment of Deloitte & Touche LLP as independent registered public accounting firm for fiscal year ending December 31, 2026 at the 2026-05-14 meeting.

“3. An advisory (non-binding) resolution to ratify the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2026”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Advisory (non-binding) resolution to approve the compensation of the Company's named executive officers at the 2026-05-14 meeting.

“2. An advisory (non-binding) resolution to approve the compensation of the Company's named executive officers”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Election of twelve directors to serve on the board until the 2027 Annual Meeting at the 2026-05-14 meeting.

“1. The election of twelve directors to serve on the board of directors of the Company until the Company’s 2027 Annual Meeting of Shareholders or until their successors have been elected and have qualified”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported first quarter 2026 results: revenue $594, net income $192 million, EPS $0.66.

“58.03% 57.30% 69.06% Operating efficiency ratio, as adjusted 1 53.68% 51.39% 55.11% INCOME STATEMENT ($ in millions, excl. per share data) 1Q26 4Q25 1Q25 Net interest income $594 $627 $425 Provision for credit losses $28 $23 $27 Non-interest income $83 $90 $66 Non-interest expense $394 $412 $340 Pre-provision net revenue 1 $283 $305 $151 Operating”

Maria Pope was elected as independent, non-executive chair at COLUMBIA BANKING SYSTEM, INC..

“the board elected director Maria Pope to serve as the independent, non-executive chair of the Company’s board of directors, effective April 1, 2025.”

Cort O'Haver resigned as Executive Chair at COLUMBIA BANKING SYSTEM, INC..

“On March 30, 2025, the board of directors of Columbia Banking System, Inc. (the "Company") determined that Mr. Cort O’Haver, the Executive Chair of the Company’s board of directors, would no longer serve as Executive Chair, effective as of March 31, 2025.”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Advisory (non-binding) resolution to ratify the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for the fiscal year ending December 31, 2024 at the 2024-05-08 meeting.

“5. Advisory (non-binding) Ratification of Appointment of Independent Registered Public Accounting Firm Votes For Votes Against Abstentions Broker Non-Votes 186,585,732 452,801 154,533 —”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Approval of the ESPP Amendment at the 2024-05-08 meeting.

“4. Approval of the ESPP Amendment Votes For Votes Against Abstentions Broker Non-Votes 171,373,969 1,071,352 274,995 14,472,750”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Approval of the 2024 Equity Incentive Plan at the 2024-05-08 meeting.

“3. Approval of the 2024 Equity Incentive Plan Votes For Votes Against Abstentions Broker Non-Votes 161,299,944 11,074,979 345,393 14,472,750”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Advisory (non-binding) resolution to approve the compensation of the Company's named executive officers at the 2024-05-08 meeting.

“2. Advisory (non-binding) Approval of Executive Compensation Votes For Votes Against Abstentions Broker Non-Votes 94,782,063 77,482,208 456,045 14,472,750”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Election of fourteen directors to serve on the Board until the 2025 Annual Meeting or until their successors have been elected and have qualified at the 2024-05-08 meeting.

“The following is a summary of the voting results for the matters voted upon by the shareholders. 1. Election of Directors Director's Name Votes For Votes Against Abstentions Broker Non-Votes Cort L. O'Haver 167,921,051 4,610,270 188,995 14,472,750”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported financial results for first quarter 2024.

“On April 25, 2024, Columbia Banking System, Inc. issued a press release announcing first quarter 2024 financial results.”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported financial results for fourth quarter and full year 2023.

“Columbia Banking System, Inc. issued a press release announcing fourth quarter and full year 2023 financial results.”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported financial results for third quarter 2023.

“On October 18, 2023, Columbia Banking System, Inc. issued a press release announcing third quarter 2023 financial results.”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported financial results for second quarter 2023.

“On July 19, 2023, Columbia Banking System, Inc. issued a press release announcing second quarter 2023 financial results.”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Advisory (non-binding) resolution to ratify the appointment of Deloitte & Touche LLP as the Company's independent registered public accounting firm for fiscal year ending December 31, 2023 at the 2023-05-18 meeting.

“4. Advisory (non-binding) Ratification of Appointment of Independent Public Accounting Firm Votes For Votes Against Abstentions Broker Non-Votes 181,534,128 4,941,409 138,108 —”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Advisory (non-binding) resolution to approve the frequency of future advisory votes on executive compensation at the 2023-05-18 meeting.

“3. Advisory (non-binding) Approval of Frequency of Future Advisory Votes on Executive Compensation 1 Year 2 Years 3 Years Abstain 164,421,130 135,600 10,064,440 195,111”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Advisory (non-binding) resolution to approve the compensation of the Company's named executive officers at the 2023-05-18 meeting.

“2. Advisory (non-binding) Approval of Executive Compensation Votes For Votes Against Abstentions Broker Non-Votes 170,344,283 4,113,802 358,196 11,797,364”
Shareholder Votes

COLUMBIA BANKING SYSTEM, INC. shareholders approved Election of fourteen directors at the 2023-05-18 meeting.

“Cort L. O’Haver 171,495,999 3,191,760 128,522 11,797,364”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported first quarter 2023 results: net income $(14) million, EPS ($0.09) per common share.

“Net income of $(14) million, or $(0.09) per common share”
Governance Changes

COLUMBIA BANKING SYSTEM, INC.: Increased authorized shares of common stock from 115,000,000 to 520,000,000 (effective 2023-02-28).

“Columbia filed articles of amendment with the Washington Secretary of State for the purpose of amending its Amended and Restated Articles of Incorporation, as amended, to increase the total number of authorized shares of Columbia Common Stock from 115,000,000 to 520,000,000 (the “ Articles of Amendment ”). The Articles of Amendment became effective on February 28, 2023, immediately prior to the Effective Time.”
M&A Transactions

COLUMBIA BANKING SYSTEM, INC. completed an acquisition involving Umpqua Holdings Corporation for approximately 129,575,804 shares of Columbia Common Stock (closed 2023-02-28).

“Current Report on Form 8-K and incorporated herein by reference. The total aggregate consideration delivered to holders of Umpqua Common Stock in the Merger was approximately 129,575,804 shares of Columbia Common Stock. The issuance of shares of Columbia Common Stock in connection with the Merger was registered under the Securities Act of 1933, as amended,”

Craig D. Eerkes was appointed as Lead Independent Director at COLUMBIA BANKING SYSTEM, INC..

“Craig D. Eerkes was appointed as the Lead Independent Director of the Board effective as of the Effective Time”

Ford Elsaesser retired as Director at COLUMBIA BANKING SYSTEM, INC..

“Ford Elsaesser retired from the Board effective as of the Effective Time”

Janine Terrano resigned as Director at COLUMBIA BANKING SYSTEM, INC..

“Laura A. Schrag, Tracy Mack-Askew, Michelle M. Lantow and Janine Terrano resigned effective as of the Effective Time”

Michelle M. Lantow resigned as Director at COLUMBIA BANKING SYSTEM, INC..

“Laura A. Schrag, Tracy Mack-Askew, Michelle M. Lantow and Janine Terrano resigned effective as of the Effective Time”

Tracy Mack-Askew resigned as Director at COLUMBIA BANKING SYSTEM, INC..

“Laura A. Schrag, Tracy Mack-Askew, Michelle M. Lantow and Janine Terrano resigned effective as of the Effective Time”

Laura A. Schrag resigned as Director at COLUMBIA BANKING SYSTEM, INC..

“Laura A. Schrag, Tracy Mack-Askew, Michelle M. Lantow and Janine Terrano resigned effective as of the Effective Time”

Anddria Varnado was appointed as Director at COLUMBIA BANKING SYSTEM, INC..

“seven (7) former directors of Umpqua were appointed to serve as directors of Columbia, in each case effective as of the Effective Time: Cort L. O’Haver, Peggy Y. Fowler, Luis F. Machuca, Maria M. Pope, John F. Schultz, Hilliard C. Terry, III and Anddria Varnado”

Hilliard C. Terry, III was appointed as Director at COLUMBIA BANKING SYSTEM, INC..

“seven (7) former directors of Umpqua were appointed to serve as directors of Columbia, in each case effective as of the Effective Time: Cort L. O’Haver, Peggy Y. Fowler, Luis F. Machuca, Maria M. Pope, John F. Schultz, Hilliard C. Terry, III and Anddria Varnado”

John F. Schultz was appointed as Director at COLUMBIA BANKING SYSTEM, INC..

“seven (7) former directors of Umpqua were appointed to serve as directors of Columbia, in each case effective as of the Effective Time: Cort L. O’Haver, Peggy Y. Fowler, Luis F. Machuca, Maria M. Pope, John F. Schultz, Hilliard C. Terry, III and Anddria Varnado”

Maria M. Pope was appointed as Director at COLUMBIA BANKING SYSTEM, INC..

“seven (7) former directors of Umpqua were appointed to serve as directors of Columbia, in each case effective as of the Effective Time: Cort L. O’Haver, Peggy Y. Fowler, Luis F. Machuca, Maria M. Pope, John F. Schultz, Hilliard C. Terry, III and Anddria Varnado”

Luis F. Machuca was appointed as Director at COLUMBIA BANKING SYSTEM, INC..

“seven (7) former directors of Umpqua were appointed to serve as directors of Columbia, in each case effective as of the Effective Time: Cort L. O’Haver, Peggy Y. Fowler, Luis F. Machuca, Maria M. Pope, John F. Schultz, Hilliard C. Terry, III and Anddria Varnado”

Peggy Y. Fowler was appointed as Director at COLUMBIA BANKING SYSTEM, INC..

“seven (7) former directors of Umpqua were appointed to serve as directors of Columbia, in each case effective as of the Effective Time: Cort L. O’Haver, Peggy Y. Fowler, Luis F. Machuca, Maria M. Pope, John F. Schultz, Hilliard C. Terry, III and Anddria Varnado”

Cort L. O'Haver was appointed as Executive Chair of the board of directors at COLUMBIA BANKING SYSTEM, INC..

“Cort L. O’Haver, the former President and Chief Executive Officer of Umpqua, was appointed Executive Chair of the board of directors of Columbia”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported year ended December 31, 2022 results: net income $250.2 million, EPS $3.20 per diluted share.

“Record full year net income of $250.2 million and diluted earnings per share of $3.20”
Earnings Releases

COLUMBIA BANKING SYSTEM, INC. reported quarter ended December 31, 2022 results: net income $68.9 million, EPS $0.88 per diluted share.

“announced record earnings for the fourth quarter of $68.9 million and diluted earnings per share of $0.88.”
Material Agreements

COLUMBIA BANKING SYSTEM, INC. amended Amendment No. 1 to Agreement and Plan of Merger with Umpqua Holdings Corporation and Cascade Merger Sub, Inc. (effective 2023-01-09).

“On January 9, 2023, Columbia Banking System, Inc., a Washington corporation (“Columbia”), Umpqua Holdings Corporation, an Oregon corporation (“Umpqua”), and Cascade Merger Sub, Inc., a Delaware corporation and a direct, wholly-owned subsidiary of Columbia (“Merger Sub”), entered into Amendment No. 1 (the “Amendment”) to the Agreement and Plan of Merger, dated as of October 11, 2021 (the “Merger Agreement”), by and among Columbia, Umpqua, and Merger Sub.”

Clint E. Stein changed role as President and Chief Executive Officer at COLUMBIA BANKING SYSTEM, INC..

“On October 11, 2021, Columbia and Mr. Stein, the current President and Chief Executive Officer of Columbia and Chief Executive Officer of Columbia State Bank entered into an amended and restated employment agreement (the "CEO Agreement") pursuant to which Mr. Stein will serve as President and Chief Executive Officer of Columbia and Chief Executive Officer of Umpqua Bank following the Closing.”

Facts are extracted by an LLM and gated to those whose source quote is present verbatim in the filing text. Coverage is best-effort while backfill and monitoring mature; this is not yet a full-market index. See methodology.