Bank of N.T. Butterfield (NYSE: NTB) unveils new share repurchase plan

Rhea-AI Filing Summary

The Bank of N.T. Butterfield & Son Limited filed a Form 6-K to notify investors that its Board of Directors has approved a new share repurchase program. The filing states that a press release describing this program is attached as Exhibit 99.1, titled “Butterfield Announces New Share Repurchase Program.” This indicates the bank plans to return capital to shareholders by buying back its own shares, although specific terms such as size, timing, or duration of the program are contained in the referenced press release and are not detailed in this text.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13A-16 OR 15D-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission File Number: 001-37877

The Bank of N.T. Butterfield & Son Limited

(Translation of registrant’s name into English)

65 Front Street

Hamilton, HM 12

Bermuda

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F ý Form 40-F o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): o

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): o

DOCUMENTS INCLUDED AS PART OF THIS FORM 6-K

Attached hereto as Exhibit 99.1 is a press release announcing a new share repurchase program approved by the Board of Directors of The Bank of N.T. Butterfield & Son Limited.

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, thereunto duly authorized.

Date: December 8, 2025			THE BANK OF N.T. BUTTERFIELD & SON LIMITED
			By:			/s/ Michael Schrum
			Name:			Michael Schrum
			Title:			President & Group Chief Financial Officer

2

EXHIBIT INDEX

Exhibit						Description
99.1						Butterfield Announces New Share Repurchase Program

3

FAQ

What did The Bank of N.T. Butterfield & Son Limited (NTB) report in this Form 6-K?

The company reported that its Board of Directors has approved a new share repurchase program and that details are provided in an attached press release labeled as Exhibit 99.1.

What is the main focus of the NTB December 2025 Form 6-K filing?

The main focus is to inform investors that Butterfield has announced a new share repurchase program, as described in the attached Exhibit 99.1 press release.

Which exhibit in the NTB Form 6-K contains information on the new share repurchase program?

Exhibit 99.1, titled “Butterfield Announces New Share Repurchase Program,” contains the press release with information on the new share repurchase program.

Who signed the Form 6-K for The Bank of N.T. Butterfield & Son Limited?

The Form 6-K was signed by Michael Schrum, who is identified as President & Group Chief Financial Officer of The Bank of N.T. Butterfield & Son Limited.

When was this NTB Form 6-K report dated?

The report is dated December 8, 2025, covering the month of December 2025 under the Securities Exchange Act of 1934.

Does the NTB Form 6-K specify the size of the new share repurchase program?

No, this text only states that a new share repurchase program was approved and refers to a press release in Exhibit 99.1 for details; specific amounts are not described here.