Columbia Financial (CLBK) designates Thomas Splaine as principal financial and accounting officer

Filing Impact

(High)

Filing Sentiment

(Neutral)

Form Type

8-K

Rhea-AI Filing Summary

Columbia Financial, Inc. named Thomas F. Splaine, Jr., its Executive Vice President and Chief Financial Officer, as the company’s principal financial officer and principal accounting officer for U.S. Securities and Exchange Commission reporting matters, effective April 17, 2026.

The filing notes that Mr. Splaine had previously been appointed Executive Vice President and Chief Financial Officer effective January 28, 2026, following the promotion of Dennis E. Gibney to First Senior Executive Vice President and Chief Banking Officer. The report also includes a standard exhibit for the cover page interactive data file.

8-K Event Classification

2 items: 5.02, 9.01

2 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 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Key Figures

Designation date: April 17, 2026 CFO appointment effective date: January 28, 2026 Exhibit number: 104 +1 more

4 metrics

Designation date April 17, 2026 Effective date of principal financial and accounting officer designation

CFO appointment effective date January 28, 2026 Effective date Thomas F. Splaine, Jr. became EVP and CFO

Exhibit number 104 Cover Page Interactive Data File in Inline XBRL

Commission file number 001-38456 SEC registration reference for Columbia Financial, Inc.

Key Terms

principal financial officer, principal accounting officer, Inline XBRL, Item 5.02

4 terms

principal financial officer financial

"designated Thomas Splaine, Jr. ... as the Company’s “principal financial officer”"

The principal financial officer is the senior executive who runs a company's financial operations: preparing and certifying financial reports, managing accounting controls, budgets and cash flow, and advising on financial strategy. Investors care about this role because its competence affects how trustworthy the company’s numbers are, how well it manages risk and capital needs, and the credibility of forecasts—like the chief navigator steering a firm's financial course.

principal accounting officer financial

"and “principal accounting officer” for U.S. Securities and Exchange Commission reporting matters"

The Principal Accounting Officer is the person responsible for making sure a company's financial records are accurate and follow the rules. They play a key role in preparing financial reports that show how well the company is doing. This helps investors, managers, and regulators trust the company's financial information.

Inline XBRL technical

"Cover Page Interactive Data File (embedded within the Inline XBRL document)"

Inline XBRL is a file format for financial filings that embeds machine-readable data tags directly inside the human-readable report, so the same document can be read by people and parsed by software. For investors it makes extracting, comparing and verifying financial numbers faster and more reliable—like a grocery list where each item also has a barcode—reducing manual errors and speeding up analysis.

Item 5.02 regulatory

"Item 5.02 Departure of Directors or Certain Officers; Election of Directors"

Understanding 8-K Material Events →

04/23/2026 - 12:00 PM

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 EXCHANGE ACT OF 1934

Date of Report (Date of Earliest Event Reported): April 17, 2026

Columbia Financial, Inc.

(Exact Name of Registrant as Specified in its Charter)


Delaware	001-38456	22-3504946
(State or other jurisdiction	(Commission	(IRS Employer
of incorporation)	File Number)	Identification Number)

19-01 Route 208 North, Fair Lawn, New Jersey 07410

(Address of principal executive offices)

(800) 522-4167

(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(s)	Name of each exchange on which registered
Common stock, $0.01 par value per share	CLBK	The Nasdaq Stock Market LLC

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 April 17, 2026, the Board of Directors of Columbia Financial, Inc. (the “Company”) designated Thomas Splaine, Jr., the Executive Vice President and Chief Financial Officer of the Company, as the Company’s “principal financial officer” and “principal accounting officer” for U.S. Securities and Exchange Commission reporting matters. As previously disclosed, Mr. Splaine was appointed Executive Vice President and Chief Financial Officer of the Company, effective January 28, 2026, in connection with the promotion of Dennis E. Gibney to First Senior Executive Vice President and Chief Banking Officer of the Company.

Item 9.01 Financial Statements and Exhibits

(d) Exhibits


Exhibit Number						Description
104						Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunder duly authorized.

Date:

April 23, 2026

/s/Thomas F. Splaine, Jr.

Thomas F. Splaine, Jr.

Executive Vice President and Chief Financial Officer

Source: View Original Filing on SEC EDGAR

FAQ

What executive change did Columbia Financial (CLBK) disclose in this 8-K?

Columbia Financial designated Thomas F. Splaine, Jr. as its principal financial officer and principal accounting officer for SEC reporting. He already served as Executive Vice President and Chief Financial Officer, so this filing formalizes his SEC reporting roles.

Who is Thomas F. Splaine, Jr. at Columbia Financial (CLBK)?

Thomas F. Splaine, Jr. is Executive Vice President and Chief Financial Officer of Columbia Financial. The company has now also designated him as principal financial officer and principal accounting officer for SEC reporting, consolidating key financial reporting responsibilities under his role.

When did Columbia Financial (CLBK) designate its new principal financial officer?

The board designated Thomas F. Splaine, Jr. as principal financial officer and principal accounting officer on April 17, 2026. This follows his earlier appointment as Executive Vice President and Chief Financial Officer effective January 28, 2026.

How is Dennis E. Gibney mentioned in this Columbia Financial (CLBK) filing?

The filing explains that Thomas F. Splaine, Jr.’s CFO appointment in January 2026 was made in connection with Dennis E. Gibney’s promotion to First Senior Executive Vice President and Chief Banking Officer, clarifying how responsibilities shifted among senior executives.

What exhibit is included with this Columbia Financial (CLBK) 8-K?

The 8-K includes Exhibit 104, the cover page interactive data file embedded within the Inline XBRL document. This exhibit provides machine-readable cover page information in accordance with SEC technical reporting requirements.

Filing Exhibits & Attachments

3 documents