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 Quarter Ended March 31, 2024 Commission File Number 001-36202 NAVIGATOR HOLDINGS LTD. (Translation of registrant’s name into English) c/o NGT Services (UK) Ltd 10 Bressenden Place, London, SW1E 5DH, United Kingdom (Address of principal executive office) Indicate by check mark whether the registrant files or will ...