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 May 2026

Commission File Number: 001-42804

Kyivstar Group Ltd.

(Translation of registrant’s name into English)

Unit 517, Level 5

Index Tower

Dubai International Financial Centre (DIFC)

United Arab Emirates

(Address of principal executive offices)

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 x Form 40-F o

EXPLANATORY NOTE

On May 13, 2026, Kyivstar Group Ltd. published a press release announcing its first quarter updates and financial results for the three months ended March 31, 2026, a copy of which is furnished hereto as Exhibit 99.1.

The Company is also making available an earnings release and presentation materials, which are furnished hereto as Exhibit 99.2 and Exhibit 99.3, respectively.

EXHIBIT INDEX

Exhibit No.

Description of Exhibit

99.1

Press Release, dated May 13, 2026

99.2

Earnings Release, dated May 13, 2026

99.3

Presentation Materials, dated May 13, 2026

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.

Date: May 13, 2026

Kyivstar Group Ltd.

By:

/s/ Kaan Terzioğlu

Name:

Kaan Terzioğlu

Title:

Executive Chairman and Director

Kyivstar Group Ltd. 6-K