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: 001-34153

GLOBAL SHIP LEASE, INC.

(Translation of registrant's name into English)

c/o GSL Enterprises Ltd.

9 Irodou Attikou Street

Kifisia, Athens

Greece, 14561

(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 ☒ Form 40-F ☐

INFORMATION CONTAINED IN THIS REPORT ON FORM 6-K

Attached to this Report on Form 6-K as Exhibit 99.1 is a copy of the press release of Global Ship Lease, Inc. (the “Company”), dated December 1, 2025, announcing that the Company has entered into an agreement to purchase three 8,600 TEU, Korean-built containerships with ECO upgrades.

The information contained in this Report, except for the commentary of George Youroukos contained in Exhibit 99.1 to this Report, is hereby incorporated by reference into the Company's registration statements on Form F-3 (File Nos. 333-231509, 333-258800 and 333-290461) and on Form S-8 (File Nos. 333-258992 and 333-264113).

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.

	GLOBAL SHIP LEASE, INC.
	(Registrant)

Dated: December 2, 2025	By:	/s/ Thomas Lister
		Thomas Lister
		Chief Executive Officer