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Form 8-K

sec.gov

8-K — WEBSTER FINANCIAL CORP

Accession: 0000801337-26-000017

Filed: 2026-06-16

Period: 2026-06-12

CIK: 0000801337

SIC: 6021 (NATIONAL COMMERCIAL BANKS)

Item: Other Events

Item: Financial Statements and Exhibits

Documents

8-K — wbs-20260612.htm (Primary)

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8-K

8-K (Primary)

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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): June 12, 2026

_________________________

WEBSTER FINANCIAL CORPORATION

_________________________________________

(Exact name of registrant as specified in its charter)

Delaware   001-31486   06-1187536

(State or other jurisdiction of incorporation)   (Commission File Number)   (IRS Employer Identification No.)

200 Elm Street, Stamford, Connecticut 06902

(Address and zip code of principal executive offices)

203-578-2202

(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 Symbols Name of each exchange on which registered

Common Stock, par value $0.01 per share WBS New York Stock Exchange

Depositary Shares, each representing 1/1000th interest in a share of 5.25% Series F Non-Cumulative Perpetual Preferred Stock WBS-PrF New York Stock Exchange

Depositary Shares, each representing 1/40th interest in a share of 6.50% Series G Non-Cumulative Perpetual Preferred Stock WBS-PrG New York Stock 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 8.01 Other Events.

On March 30, 2026, Santander Bank, National Association ("Santander Bank") submitted a Bank Merger Act application to the Office of the Comptroller of the Currency ("OCC") requesting approval to merge Webster Bank, National Association with and into Santander Bank, with Santander Bank continuing as the surviving entity in such merger (the "Bank Merger"). On June 12, 2026, the OCC approved the application for the Bank Merger.

The previously announced acquisition of Webster Financial Corporation by Banco Santander, S.A. remains subject to customary closing conditions, including the approval of the Board of Governors of the Federal Reserve System and the European Central Bank.

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, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

WEBSTER FINANCIAL CORPORATION

(Registrant)

Date: June 16, 2026 /s/ Kristy Berner

Kristy Berner

Executive Vice President and General Counsel

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