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 2021

Commission File Number: 001-31909

ASPEN INSURANCE HOLDINGS LIMITED

(Translation of registrant’s name into English)

141 Front Street

Hamilton HM 19

Bermuda

(Address of principal executive office)

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

Form 20-F  ý Form 40-F  ¨

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): Yes ¨ No ý

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): Yes ¨ No ý

On March 25, 2021, Aspen Insurance Holdings Limited (the “Company”) issued a press release announcing that Tammy Richardson-Augustus has been appointed to the Company's Board of Directors as a non-executive director.

EXHIBIT INDEX

Exhibit

99.1        Press Release datedMarch 25, 2021.

SIGNATURES

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.

Document

Exhibit 99.1

ASPEN APPOINTS NEW DIRECTOR

HAMILTON, Bermuda – March 25, 2021 – Aspen Insurance Holdings Limited (“Aspen” or the "Company”) announced today that Tammy Richardson-Augustus has been appointed to its Board as a Non Executive Director.

Ms Richardson-Augustus is a partner at Appleby Global, one of the world’s leading international law firms, which advises public and private companies, financial institutions and private individuals.

She joined Appleby Global in 1998 practising securities and funds work in Bermuda and Hong Kong. Ms Richardson-Augustus maintains a diversified business transactions practice, with emphasis on domestic and international mergers and acquisitions, joint ventures, capital markets and securities, secured and unsecured lending transactions and general corporate governance matters. She has extensive experience working with clients in a wide range of industries, including in energy, oil and gas exploration, and maritime shipping.

Among other accolades, Ms Richardson-Augustus has been recognised as a ‘Leading Individual’ in the Banking, Finance and Capital Markets category by Legal 500 Caribbean. She is also a member of the Bermuda Bar Association, a justice of the peace, and serves with a number of Bermudian community organisations.

Mark Cloutier, Executive Chairman and Group Chief Executive Officer, commented: “I am delighted to welcome Tammy to the Aspen Board. Her extensive experience across a range of diverse sectors will make her an excellent addition to our strong Board of Directors. Tammy will bring new insights and experiences to the Aspen leadership and I look forward to working with her, and fellow Directors, as we continue our transformation journey.”

• Ends -

For further information:

Media

Peter Krinks

Senior Group Communications Manager

peter.krinks@aspen.co

+44 (0)20 7184 8544

About Aspen Insurance Holdings Limited

Aspen provides reinsurance and insurance coverage to clients in various domestic and global markets through wholly-owned subsidiaries and offices in Australia, Bermuda, Canada, Singapore, Switzerland, the United Kingdom and the United States. For the year ended December 31, 2019, Aspen reported $12.6 billion in total assets, $7.0 billion in gross reserves, $2.7 billion in total shareholders’ equity and $3.4 billion in gross written premiums. Aspen's operating subsidiaries have been assigned a rating of “A-” by Standard & Poor’s Financial Services LLC, and an “A” (“Excellent”) by A.M. Best Company Inc. For more information about Aspen, please visit www.aspen.co.

Cautionary Statement Regarding Forward-Looking Statements

This press release may contain written “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, that are made pursuant to the “safe harbor” provisions of The Private Securities Litigation Reform Act of 1995. Forward-looking statements include all statements that do not relate solely to historical or current facts. In particular, statements using the words such as “expect,” “intend,” “plan,” “believe,” “aim,” “project,” “anticipate,” “seek,” “will,” “likely,” “assume,” “estimate,” “may,” “continue,” “guidance,” “objective,” “outlook,” “trends,” “future,” “could,” “would,” “should,” “target,” “predict,” “potential,” “on track” or their negatives or variations and similar terminology and words of similar import generally involve forward-looking statements.