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 December 2022

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 the appointment of Ingrid Pierce to the Board as an Independent Director.

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.

EXHIBIT INDEX

a221201ingridpierceboard

Ingrid Pierce Appointed Independent Director of Butterfield Hamilton, Bermuda—December 5, 2022: The Bank of N.T. Butterfield & Son Limited (“Butterfield” or the “Bank”) (NYSE: NTB | BSX: NTB.BH) announced today that Ingrid Pierce, Global Managing Partner of Walkers, a leading international law firm, has joined the Bank’s Board as an Independent Director, bringing the total number of Directors to ten. Ms. Pierce is amongst the world’s leading investment fund lawyers, acting for major institutions, asset managers, (re)insurers, trustees and other fiduciaries. Prior to joining Walkers in 2002, Ms. Pierce practiced as a Barrister in London, specializing in commercial and chancery work. Ms. Pierce is currently based in the Cayman Islands. Michael Collins, Butterfield’s Chairman and Chief Executive Officer, said “I am delighted that Ingrid is joining Butterfield’s Board of Directors. The Bank will benefit from her expert legal and business knowledge, particularly relating to international trust, banking and law. It will also benefit the Bank to have a new Cayman-based Director, as the Cayman Islands remain an important contributor to Butterfield’s profitability and expected growth.” Ms. Pierce is a frequent speaker at industry events and a guest commentator on various media platforms including Bloomberg, CNBC and Fox Business. She is also a Member of the Board of Directors of Lex Mundi, the world's leading network of independent law firms. Ms. Pierce will be a member of Butterfield’s Risk Policy & Compliance Committee. -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 Fields Nicky Stevens Investor Relations Group Strategic Marketing & Communications The Bank of N.T. Butterfield & Son Limited The Bank of N.T. Butterfield & Son Limited Phone : (441) 299 3816 Phone: (441) 299 1624 E-mail : [email protected] E-mail: [email protected]