Company: FUFU
Filing Date: 2025-02-20
Form Type: 424B3
Source: 0001213900-25-015464
Chunk: 0

Company: Bitfufu Inc.
Filing Date: 2025-02-20
Form: 424B3
Chunk 0
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Filed pursuant to Rule 424(b)(3)

Registration Statement No. 333-278207

Prospectus Supplement No. 15

(to Prospectus dated May 15, 2024)

<div align='center'>SUPPLEMENT NO. 15 TO

PROSPECTUS FOR

UP TO 30,183,800 CLASS A ORDINARY SHARES

BITFUFU INC.</div>

This Prospectus Supplement
No. 15 is being filed to update and supplement the information contained in the prospectus dated May 15, 2024 (as supplemented from time to time, the “Prospectus”),
relating to, among other things, the issuance from time to time of up to 5,589,292 Class A Ordinary Shares and the resale from time to
time by the selling shareholders named in this Prospectus or their permitted transferees of (a) up to 24,594,508 Class A Ordinary Shares;
(b) up to 155,541 Class A Ordinary Shares issuable upon the exercise of 207,389 Warrants; and (c) up to 207,000 Class A Ordinary Shares
issuable upon the exercise of the Unit Purchase Option.

February 20, 2025

<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER
PURSUANT TO RULE 13a-16 OR 15d-16 OF
THE SECURITIES EXCHANGE ACT OF 1934

For the month of February 2025

Commission file number: 001-41972

BitFuFu Inc.

(Exact Name of Registrant as Specified in Its Charter)

9 Temasek Boulevard

Suntec Tower 2, #13-01/02/03

Singapore 038989

(Address of Principal Executive Offices)</div>

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

<div align='center'>Form 20-F ☒
Form 40-F ☐

EXHIBIT INDEX</div>

| Exhibit No. |     | Description                                                                                                |
| 99.1        |     | Press Release - BitFuFu Acquires 51MW Operational Data Center in Oklahoma, Expanding U.S. Mining Footprint |

<div align='center'>1

SIGNATURE</div>

Pursuant to the