Company: KYIV
Filing Date: 2025-06-24
Form Type: F-4/A
Source: 0001213900-25-057315
Chunk: 726

Company: Kyivstar Group Ltd.
Filing Date: 2025-06-24
Form: F-4/A
Chunk 726
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| Name:                            |     | Betsy Z. Cohen                        |
| Title:                           |     | Manager                               |
| COHEN CIRCLE ADVISORS I, LLC     |     |                                       |
| By:                              |     | /s/ Betsy Z. Cohen                    |
| Name:                            |     | Betsy Z. Cohen                        |
| Title:                           |     | Manager                               |

[ Signature Page to SPAC Support Agreement ]

Annex B-5

| CANTOR:                 |     |                                   |
| CANTOR FITZGERALD & CO. |     |                                   |
| By:                     |     | /s/ Sage Kelly                    |
| Name:                   |     | Sage Kelly                        |
| Title:                  |     | Global Head of Investment Banking |

[ Signature Page to SPAC Support Agreement ]

Annex B-6

| COMPANY:            |     |                    |
| KYIVSTAR GROUP LTD. |     |                    |
| By:                 |     | /s/ Kaan Terzioglu |
| Name:               |     | Kaan Terzioglu     |
| Title:              |     | Director           |

[ Signature Page to SPAC Support Agreement ]

Annex B-7 Annex A Voting Shares [***] Annex B-8 Annex B Notices [***] [ Annex B to Sponsor Agreement ] Annex B-9 Annex C EXECUTION VERSION SPONSOR AGREEMENT This SPONSOR AGREEMENT (this “ Agreement ”) is made and entered into as of March 17, 2025, by and among (1) COHEN CIRCLE ACQUISITION CORP. I, a Cayman Islands exempted company (company number 382528) (the “ SPAC ”); (2) KYIVSTAR GROUP LTD., an exempted company with limited liability, incorporated and existing under the laws of Bermuda with registration number 202504557, with its registered office at Victoria Place, 31 Victoria Street, Hamilton, HM10, Bermuda, and its principal business address at Index Tower (East Tower), Unit 1703, DIFC (Dubai International Financial Center), United Arab Emirates (“ New PubCo ”); (3) COHEN CIRCLE SPONSOR I, LLC, a Delaware limited liability company (“ CCS I ”), (4) COHEN CIRCLE ADVISORS I, LLC, a Delaware limited liability company (“ CCA I ,” and together with CSS I, the “ Sponsors ”), (