Filed pursuant to Rule 424(b)(3)
Registration No. 333-286878
21SHARES SUI STAKING ETF
SUPPLEMENT NO. 4 DATED AUGUST 26, 2026
TO THE PROSPECTUS DATED FEBRUARY 23, 2026
This prospectus supplement
(this “Supplement”) is part of and should be read in conjunction with the prospectus of 21Shares Sui Staking ETF (the
“Trust”), dated February 23, 2026 (the “Prospectus”). Unless otherwise defined herein, capitalized
terms used in this Supplement shall have the same meanings as in the Prospectus.
The purpose of this Supplement
is to include the Trust’s Current Report on Form 8-K filed on August 26, 2026.
Current Report on Form 8-K
On August 26, 2026, the Trust
filed its Current Report on Form 8-K (the “Report”) with the Securities and Exchange Commission. The Report (without
exhibits) is attached to this Supplement.
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934
Date of Report (Date of earliest event reported):
August 20, 2026
21SHARES SUI STAKING ETF
(Exact name of registrant as specified in its charter)
| Delaware |
|
001-43145 |
|
33-6749416 |
(State or other jurisdiction
of incorporation) |
|
(Commission File Number) |
|
(IRS Employer
Identification No.) |
| 158
W. 27th Street |
|
|
| New York, New York |
|
10001 |
| (Address of principal executive offices) |
|
(zip code) |
Registrant’s telephone number, including
area code: (646) 370-6016
21Shares Sui ETF
(Former Name or Former Address, if Changed Since
Last Report.)
Check the appropriate box below if the Form 8-K
filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General
Instruction A.2. below):
| ☐ | Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ☐ | Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ☐ | Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ | Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
Securities registered pursuant to Section 12(b) of the Act:
| Title of each class |
|
Trading Symbol(s) |
|
Name of each exchange on which registered |
| Shares of Beneficial Interest of 21Shares Sui Staking ETF |
|
TSUI |
|
The Nasdaq Stock Market LLC |
Indicate by check mark whether the registrant
is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the
Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company ☒
If an emerging growth company, indicate by check
mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting
standards provided pursuant to Section 13(a) of the Exchange Act. ☐
Item 1.01 Entry into a Material Definitive Agreement.
Benchmark Licensing Agreement
On August 20, 2026, 21Shares US LLC (the “Sponsor”)
entered into a licensing agreement (the “Benchmark Licensing Agreement”) with FTSE International Limited (“FTSE”
or the “Benchmark Provider”). Entry into the Benchmark Licensing Agreement follows the Sponsor’s notice, provided on
June 30, 2026 and previously disclosed, of the termination, effective August 31, 2026, of the Sponsor’s licensing agreement with
CF Benchmarks Ltd. relating to the use of the CME CF Sui-Dollar Reference Rate - New York Variant. Pursuant to the Benchmark Licensing
Agreement, FTSE will provide each of the Sponsor, 21Shares Sui Staking ETF (the “Trust”), and their affiliates a non-exclusive,
non-transferable, non-sub-licensable, worldwide license to access, view and use the FTSE Sui Index (the “Pricing Benchmark”)
to develop, create, calculate, settle, maintain or support and market the Trust. Beginning August 27, 2026, the Trust will value its shares
of beneficial interest (“Shares”) and calculate its net asset value by reference to the Pricing Benchmark in place of the
CME CF Sui-Dollar Reference Rate - New York Variant. Such license is expected to have a one-year initial term and will automatically be
renewed for successive one-year periods, unless terminated pursuant to its terms.
FTSE is a company incorporated and registered
in England, and its principal offices are located at 10 Paternoster Square, London, EC4M 7LS, United Kingdom. FTSE is experienced in calculating
and administering digital asset indices. FTSE is unaffiliated with the Sponsor.
Amendment No. 1 to the Sponsor Agreement
On August 26, 2026, the Trust entered into Amendment
No. 1 to the Sponsor Agreement, by and between the Trust and the Sponsor (the “Amendment No. 1 to the Sponsor Agreement”),
to change the timing of payment of the sponsor fee the Sponsor receives from the Trust as compensation for the Sponsor’s services
rendered to the Trust (the “Sponsor Fee”) from weekly in arrears to at least quarterly in arrears, in each case payable in
SUI.
The foregoing descriptions of the Benchmark Licensing
Agreement and Amendment No. 1 to the Sponsor Agreement are summaries, do not purport to be complete, and are qualified in their entirety
by reference to the full text of the Benchmark Licensing Agreement and Amendment No. 1
to the Sponsor Agreement, copies of which are filed as Exhibits 10.1 and 10.2 hereto, respectively, and are incorporated by reference
herein.
Item 5.03 Amendments to Articles of Incorporation or Bylaws;
Change in Fiscal Year.
On August 25, 2026, the Sponsor caused a Certificate
of Amendment to the Trust’s Certificate of Trust to be filed with the Secretary of State of the State of Delaware in order to change
the name of the Trust from “21Shares Sui ETF” to “21Shares Sui Staking ETF”. In addition, on August 26, 2026,
the Sponsor and CSC Delaware Trust Company, the Trustee of the Trust, entered into a Second Amended and Restated Trust Agreement (the
“Trust Agreement”). The Trust Agreement made changes to the Amended and Restated Trust Agreement to reflect (i) the Trust’s
use of the FTSE Sui Index in place of the CME CF Sui-Dollar Reference Rate - New York Variant, (ii) the change in timing of payment of
the Sponsor Fee, (iii) the change in the Trust’s name and (iv) various other ministerial, technical, conforming and clarifying
revisions, none of which materially impact the rights of the Trust or holders of Shares. A copy of the Certificate of Amendment to the
Trust’s Certificate of Trust and a copy of the Trust Agreement are filed as Exhibits 3.1 and 3.2 hereto, respectively.
Item 9.01 Financial Statements and Exhibits.
| 3.1 |
|
Certificate of Amendment to the Certificate of Trust. |
| 3.2 |
|
Second Amended and Restated Trust Agreement, dated as of August 26, 2026. |
| 10.1† |
|
Benchmark Licensing Agreement, dated as of August 20, 2026, between the Sponsor and FTSE. |
| 10.2 |
|
Amendment No. 1 to the Sponsor Agreement, dated as of August 26, 2026, between the Trust and the Sponsor. |
| 104 |
|
Cover Page Interactive Data File (embedded within the Inline XBRL document). |
| † | Certain portions of this exhibit have been omitted in accordance
with Item 601(b)(10)(iv) of Regulation S-K because the omitted information is (i) not material and (ii) the registrant customarily
and actually treats that information as private or confidential. The registrant agrees to furnish supplementally an unredacted copy of
the exhibit to the Securities and Exchange Commission upon its request. |
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 hereunto duly authorized.
| Dated: August 26, 2026 |
21SHARES SUI STAKING ETF |
| |
|
| |
21Shares US LLC, as Sponsor of 21Shares Sui Staking ETF |
| |
|
| |
By: |
/s/ Duncan Moir |
| |
Name: |
Duncan Moir |
| |
Title: |
President |
