Company: SCAG
Filing Date: 2025-05-29
Form Type: 424B3
Source: 0001213900-25-048544
Chunk: 1

Company: Scage Future
Filing Date: 2025-05-29
Form: 424B3
Chunk 1
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 and
21,737,500 ordinary shares of PubCo represented by American depositary shares issuable upon exercise of warrants of PubCo in connection
with the Business Combination.

This supplement No. 5,
dated May 29, 2025 (this “Supplement”), is being filed by PubCo and Scage International with the SEC to update, amend and
supplement certain information contained in the Proxy Statement/Prospectus, which forms part of the Registration Statement. Except as
otherwise set forth below, the information in the Proxy Statement/Prospectus remains unchanged. The page reference is to the page in the
Proxy Statement/Prospectus, and terms used herein, unless otherwise defined, have the meanings set forth in the Proxy Statement/Prospectus.

This Supplement is not complete
without, and may not be utilized except in connection with, the Proxy Statement/Prospectus, including any supplements and amendments thereto.

You should read carefully and in their entirety this Supplement and the Proxy Statement/Prospectus and all accompanying annexes and exhibits. In particular, you should review and consider carefully the matters discussed under the heading “Risk Factors” beginning on page 36 of the Proxy Statement/Prospectus.

Neither the SEC nor any state securities regulatory agency has approved or disapproved the transactions described in the Proxy Statement/Prospectus or any of the securities to be issued in the Business Combination (as defined in the Proxy Statement/Prospectus), passed upon the merits or fairness of the Business Combination or related transactions or passed upon the adequacy or accuracy of the disclosure in the Proxy Statement/Prospectus or this Supplement. Any representation to the contrary constitutes a criminal offense.

<div align='center'>Prospectus supplement dated May 29, 2025</div>

Supplemental Disclosures to the Proxy Statement/Prospectus

Amend "SUMMARY OF THE PROXY STATEMENT/PROSPECTUS" section by inserting the following to the end of that section:

Scage International's Recent Developments

Set forth below are selected
estimated preliminary unaudited financial data of Scage International for the six months ended December 31, 2024, which have been prepared
by, and are the responsibility of, Scage International's management. Scage International's independent registered public accounting firm,
Marcum Asia CPAs LLP, has not audited or performed a review or any other procedures with respect to the estimated preliminary unaudited
financial results. Accordingly, Marcum