Simone Lagomarsino joins Columbia Banking System (Nasdaq: COLB) board in 2026
Rhea-AI Filing Summary
Columbia Banking System, Inc. appointed Simone Lagomarsino, age 64, to its Board of Directors, effective September 1, 2026, with service on the Board’s Audit Committee and Enterprise Risk Management Committee. Her appointment to the board of subsidiary Columbia Bank is subject to approval by the Oregon Department of Consumer and Financial Services Division of Financial Regulation.
Lagomarsino is described as an audit committee financial expert with more than 40 years of financial services leadership, including serving as President and a director of First Foundation Inc. until its sale on April 1, 2026 and as President and CEO of Luther Burbank Corporation. She will receive an annual cash retainer of $95,000 and an annual equity retainer of $115,000 in restricted stock, prorated for her partial year of service, with the equity award vesting May 14, 2027. She also receives separate annual deferred compensation payments of $100,000 under a legacy plan originating at Heritage Oaks Bank, running from 2017 through 2032, which is disclosed as her only related-party transaction.
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8-K Event Classification
3 items: 5.02, 7.01, 9.01
3 items
Item 5.02
Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers
Governance
Key personnel changes including departures, elections, or appointments of directors and executive officers.
Item 7.01
Regulation FD Disclosure
Disclosure
Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.
Item 9.01
Financial Statements and Exhibits
Exhibits
Financial statements, pro forma financial information, and exhibit attachments filed with this report.
Key Figures
Effective date of board service: September 1, 2026
Annual cash retainer: $95,000
Annual equity retainer: $115,000
+5 more
8 metrics
Effective date of board service
September 1, 2026
Date Simone Lagomarsino joins Columbia Banking System’s Board of Directors
Annual cash retainer
$95,000
Annual cash compensation for non-employee Columbia directors in 2026, prorated for Lagomarsino
Annual equity retainer
$115,000
Annual restricted stock award for non-employee Columbia directors in 2026, prorated for Lagomarsino
Equity vesting date
May 14, 2027
Date Lagomarsino’s 2026 restricted stock award vests in full
Deferred Compensation Payments per year
$100,000
Annual payments to Lagomarsino under a deferred compensation plan inherited through acquisitions
Deferred Compensation period end
2032
Year when the Deferred Compensation Payments to Lagomarsino are scheduled to conclude
Year Deferred Compensation began
2017
Start year of Lagomarsino’s Deferred Compensation Payments
Director age
64
Age of Simone Lagomarsino at the time of her appointment
Key Terms
audit committee financial expert, Enterprise Risk Management Committee, deferred compensation plan, non-employee directors, +1 more
5 terms
audit committee financial expert financial
"Ms. Lagomarsino is an audit committee financial expert and at the Effective Date"
A person on a company’s board who has deep knowledge of accounting, financial reporting and auditing, able to understand and question the books, controls and audit work like a trained mechanic inspecting an engine. Investors care because that expertise helps spot errors, weaknesses or misleading statements early, improving the likelihood that financial reports are accurate and reducing the risk of surprises that can hurt a company’s value.
Enterprise Risk Management Committee financial
"will serve on the Audit Committee and the Enterprise Risk Management Committee"
deferred compensation plan financial
"has received annual payments of $100,000 under a deferred compensation plan"
A deferred compensation plan is an arrangement where an employer agrees to pay part of an employee’s pay or bonus at a later date instead of immediately, often to reduce current tax bills or to tie rewards to long-term performance. For investors it matters because these promises create future cash obligations and influence executive incentives and retention; they can affect a company’s reported liabilities, cash flow planning and the risk profile if the business faces financial trouble.
non-employee directors financial
"compensation program for non-employee directors in 2026"
Non-employee directors are board members who do not work for the company as salaried employees and usually do not hold day-to-day management roles. They act like outside referees or independent coaches, providing oversight, asking tough questions, and protecting shareholders’ interests; investors care because these directors help ensure management is accountable, reduce conflicts of interest, and influence decisions that affect company strategy and long-term value.
Item 404(a) of Regulation S-K regulatory
"required to be disclosed pursuant to Item 404(a) of Regulation S-K"
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What did Columbia Banking System (COLB) announce regarding its board on July 30, 2026?
Columbia Banking System announced that Simone Lagomarsino will join its Board of Directors effective September 1, 2026, serving on the Audit Committee and Enterprise Risk Management Committee as an audit committee financial expert with extensive banking experience.
What committees will Simone Lagomarsino serve on at Columbia Banking System (COLB)?
Simone Lagomarsino will serve on Columbia’s Audit Committee and Enterprise Risk Management Committee. She is described as an audit committee financial expert, bringing more than 40 years of experience in finance, governance and risk management to these key board roles.
How is Simone Lagomarsino compensated as a non-employee director of Columbia Banking System (COLB)?
Lagomarsino will receive an annual cash retainer of $95,000 and an annual equity retainer of $115,000 in restricted stock. These amounts are prorated from September 1, 2026 until the next annual shareholder meeting, with the equity award vesting on May 14, 2027.
What prior experience does Simone Lagomarsino bring to the Columbia Banking System (COLB) board?
Lagomarsino has over 40 years in financial services, including serving as President and director of First Foundation Inc. until its April 1, 2026 sale and as President and CEO of Luther Burbank Corporation, plus board roles at major banking institutions.
Is Simone Lagomarsino’s appointment to Columbia Bank’s board fully approved?
Her service on the parent company’s board is effective September 1, 2026, but her appointment to the board of Columbia Bank, the subsidiary, is subject to approval by the Oregon Department of Consumer and Financial Services Division of Financial Regulation.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities and Exchange Act of 1934
Date of Report: July 28, 2026
(Date of earliest event reported)
(Exact Name of Registrant as Specified in Its Charter)
(State or Other Jurisdiction of Incorporation or Organization) | (Commission File Number) | (I.R.S. Employer Identification Number) | ||||||
(address of Principal Executive Offices)(Zip Code)
(253 ) 305-1900
(Registrant's Telephone Number, Including Area Code)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
[ ☐ ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[ ☐ ] Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[ ☐ ] Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[ ☐ ] Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
| TITLE OF EACH CLASS | TRADING SYMBOL | NAME OF EXCHANGE | ||||||
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
Emerging growth company [ ☐ ]
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act [ ]
| Item 5.02 | Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers | ||||
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”). Ms. Lagomarsino is an audit committee financial expert and at the Effective Date will serve on the Audit Committee and the Enterprise Risk Management Committee of the Company’s Board of Directors.
Ms. Lagomarsino, age 64, served as the President and a member of the board of directors of First Foundation Inc. (NYSE: FFWM) from July 2024 until its sale on April 1, 2026. Prior to joining First Foundation Inc., Ms. Lagomarsino was the President and Chief Executive Officer of Luther Burbank Corporation (Nasdaq: LBC) and its subsidiary Luther Burbank Savings, from January 2019 through February 2024. She also served on the board of directors of Luther Burbank Corporation and Luther Burbank Savings from December 2018 through February 2024. Ms. Lagomarsino served on the board of directors of the Federal Home Loan Bank of San Francisco from January 2013 through December 2024, and during her tenure she chaired the Audit, Risk and Regulatory Compliance Oversight Committees and was Chair of the board during 2022 and 2023. She also served on the board of directors of the Federal Reserve Bank of San Francisco from January 2022 through July 2024. Ms. Lagomarsino has a Bachelor of Arts in Economics from Claremont McKenna College and a Master of Business Administration in Finance from Claremont Graduate School.
There are no arrangements or understandings between Ms. Lagomarsino and any person pursuant to which Ms. Lagomarsino was selected as an officer, and no family relationships exist between Ms. Lagomarsino and any director or executive officer of the Company. Ms. Lagomarsino has received annual payments of $100,000 (the “Deferred Compensation Payments”) under a deferred compensation plan maintained by Heritage Oaks Bank, which was acquired by Pacific Premier Bank in 2017, which was acquired by Columbia Bank in 2025. The Deferred Compensation Payments were initiated in 2017 and will conclude in 2032. Other than the Deferred Compensation Payments, Ms. Lagomarsino is not a party to any transaction, or series of transactions, required to be disclosed pursuant to Item 404(a) of Regulation S-K.
Ms. Lagomarsino will receive compensation for her service on the Board of Directors of the Company and its committees consistent with the Company’s current compensation program for non-employee directors in 2026 (the relevant amounts of which are set forth below), provided that such amounts shall be prorated for the partial year of service commencing on September 1, 2026 and continuing until the next annual meeting of shareholders.
| Annual Cash Retainer | $95,000 | |||||||
| Annual Equity Retainer | $115,000 | |||||||
The Annual Equity Retainer comprises a restricted stock award under Columbia’s 2024 Equity Incentive Plan. Such restricted stock award will vest in full on May 14, 2027, consistent with the restricted stock awards previously received by the Company’s current non-employee directors for service on the Company’s Board of Directors in 2026.
| Item 7.01 | Regulation FD Disclosure. | ||||
On July 30, 2026, the Company issued a press release announcing Ms. Lagomarsino’s appointment to the Board of Directors of the Company. A copy of the press release is furnished herewith as Exhibit 99.1 and incorporated into this Item 7.01 by reference.
The information in this Item 7.01 of Form 8-K, including the accompanying Exhibit 99.1, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liability of such section, nor shall such information be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, regardless of the general incorporation language of such filing, except as shall be expressly set forth by specific reference in such filing.
| Item 9.01 | Financial Statements and Exhibits | ||||
| (d) | Exhibits. | ||||
99.1 Press Release of the Company, dated July 30, 2026, regarding Ms. Lagomarsino’s appointment to the Board of Directors | |||||
| 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) | |||||
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
| COLUMBIA BANKING SYSTEM, INC. (Registrant) | |||||
| Dated: July 30, 2026 | By:/s/ Kumi Yamamoto Baruffi Kumi Yamamoto Baruffi Executive Vice President, General Counsel | ||||
Columbia Banking System Appoints Simone Lagomarsino to its Board of Directors
TACOMA, Wash. (July 30, 2026)—Columbia Banking System, Inc. (Nasdaq: COLB), today announced the appointment of Simone Lagomarsino to its Board of Directors, effective September 1, 2026. Lagomarsino will serve on the Board’s Enterprise Risk Management Committee and Audit Committee.
Lagomarsino is a seasoned financial services executive with more than 40 years of leadership experience across finance, governance and risk management. Most recently, she served as President and Chief Risk Officer of First Foundation Inc. and First Foundation Bank until the company's sale.
“Simone brings deep banking experience, proven executive leadership and a strong understanding of risk, governance and value creation,” said Clint Stein, Chairman, CEO and President of Columbia Banking System. “Her perspective will be a valuable addition to our Board as we continue to strengthen Columbia’s franchise and deliver long-term value for our shareholders.”
Before joining First Foundation, Lagomarsino served as President and Chief Executive Officer of Luther Burbank Corporation and Luther Burbank Savings, where she repositioned the organization for stronger performance, expanded digital marketing capabilities and led the company until its sale. She previously served as President and Chief Executive Officer of the California Bankers Association and as Chief Executive Officer of Heritage Oaks Bancorp, where she delivered top-tier performance and significant growth in assets and earnings.
“Columbia has built one of the West’s most respected banking franchises through disciplined growth and a commitment to prudent risk management,” said Lagomarsino. “I’m honored to be appointed to its Board of Directors and look forward to working with other members and executive leadership to create lasting value for shareholders, customers and communities.”
Lagomarsino’s prior board service includes First Foundation Inc., the Federal Home Loan Bank of San Francisco, Luther Burbank Corporation, Hannon Armstrong Sustainable Infrastructure Capital, Inc., Pacific Premier Bancorp, Inc. and Heritage Oaks Bancorp. She also served on the board of the Federal Reserve Bank of San Francisco. For her leadership and accomplishments, Lagomarsino has received numerous recognitions, including being named “Community Banker of the Year” by American Banker and a “Banking & Finance Visionary” by the Los Angeles Times.
Lagomarsino earned a Bachelor of Arts in Economics from Claremont McKenna College and a Master of Business Administration in Finance from Claremont Graduate School.
About Columbia
Columbia Banking System, Inc. (Nasdaq: COLB) is headquartered in Tacoma, Washington and is the parent company of Columbia Bank, an award-winning western U.S. regional bank. Columbia Bank is the largest bank headquartered in the Northwest and one of the largest banks headquartered in the West with offices in Arizona, California, Colorado, Idaho, Nevada, Oregon, Texas, Utah, and Washington. Columbia Bank combines the resources, sophistication, and expertise of a national bank with a commitment to deliver superior, personalized service. The bank supports consumers and businesses through a full suite of services, including retail and commercial banking, Small Business Administration lending, institutional and corporate banking, and equipment leasing. Columbia Bank customers also have access to comprehensive investment and wealth management expertise as well as healthcare and private banking through Columbia Wealth Management. Learn more at www.columbiabankingsystem.com.
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