6-K

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 March 2024

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 the press release announcing a Senior Management appointment 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:  March 15, 2024	THE BANK OF N.T. BUTTERFIELD & SON LIMITED
	By:	/s/Shaun Morris
	Name:	Shaun Morris
	Title:	General Counsel and Group Chief Legal Officer

2

EXHIBIT INDEX

Exhibit	Description
99.1	Butterfield Announces Senior Management Appointment

3

EX-99.1

BUTTERFIELD APPOINTS GENERAL COUNSEL FOLLOWING RETIREMENT

Hamilton, Bermuda—March 15, 2024: The Bank of N.T. Butterfield & Son Limited ("Butterfield" or the "Bank") (BSX: NTB.BH; NYSE: NTB) today announced the appointment of Simon Des-Etages to General Counsel and Group Chief Legal Officer effective March 18, 2024. Mr. Des-Etages succeeds Shaun Morris, who has served in the role for the last twelve years and made the decision to retire.

Michael Collins, Chairman and Chief Executive Officer said: “On behalf of the Board and the Executive Team, we are pleased to welcome Simon to Butterfield and look forward to working with him. Given his relevant and extensive experience advising banks on legal and regulatory matters, Simon is a valuable addition to the Group. We extend our sincere thanks to Shaun for his leadership, advice and significant contributions during his time at Butterfield and we wish him all the very best for his retirement.”

Mr. Des-Etages has more than 30 years’ legal experience working in London, New York, Bermuda and the Cayman Islands, primarily within the banking industry. He started his career in private practice as a solicitor in the London offices of Slaughter and May, followed by Baker and MacKenzie, before he joined American Express to support the securities, treasury and trade finance teams. Mr. Des-Etages then moved to Merrill Lynch, where he spent eight years working as a senior counsel in the Global Private Client Group. Most recently, he worked as the Global Head of Legal for HSBC’s Global Private Banking and Wealth Management business having held progressively senior roles within the bank since joining in 2004. He holds a Master of Laws (LLM) from University College London and a Bachelor of Laws from the University of Essex, UK.

-ENDS-

About Butterfield:

Butterfield is a full-service bank and wealth manager headquartered in Hamilton, Bermuda, providing services to clients from Bermuda, the Cayman Islands, Guernsey and Jersey, where our principal banking operations are located, and The Bahamas, Switzerland, Singapore and the United Kingdom, where we offer specialized financial services. Banking services comprise deposit, cash management and lending solutions for individual, business and institutional clients. Wealth management services are composed of trust, private banking, asset management and custody. In Bermuda, the Cayman Islands and Guernsey, we offer both banking and wealth management. In The Bahamas, Singapore and Switzerland, we offer select wealth management services. In the UK, we offer residential property lending. In Jersey, we offer select banking and wealth management services. Butterfield is publicly traded on the New York Stock Exchange (symbol: NTB) and the Bermuda Stock Exchange (symbol: NTB.BH). Further details on the Butterfield Group can be obtained from our website at:

www.butterfieldgroup.com. BF-All

Investor Relations Contact:Media Relations Contact:

Noah FieldsNicky Stevens

Investor Relations Group Strategic Marketing & Communications

The Bank of N.T. Butterfield & Son LimitedThe Bank of N.T. Butterfield & Son Limited

Phone: (441) 299 3816Phone: (441) 299 1624

E-mail: noah.fields@butterfieldgroup.com E-mail: nicky.stevens@butterfieldgroup.com