Sec Form 3 Filing - FUTURECREST ACQUISITION SPONSOR LLC @ FutureCrest Acquisition Corp. - 2025-09-25

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person FUTURECREST ACQUISITION SPONSOR LLC 2. Issuer Name and Ticker or Trading Symbol FutureCrest Acquisition Corp. [ FCRS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 150 EAST 52ND STREET, 3RD FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 09/25/2025 (Street) NEW YORK, NY10022 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Class B Ordinary Shares ( 1 ) ( 1 ) ( 1 ) ( 1 ) Class A Ordinary Shares 7,187,500 ( 2 ) D ( 2 ) ( 3 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other FUTURECREST ACQUISITION SPONSOR LLC 150 EAST 52ND STREET 3RD FLOOR NEW YORK, NY10022 X Lee Thomas Jong C/O DENHAM SUSTAINABLE PERFORMANCE AC CO 185 DARTMOUTH ST., 7TH FLOOR BOSTON, MA02116 X X Chief Executive Officer Tsang Chi Keung 150 EAST 52ND STREET 3RD FLOOR NEW YORK, NY10022 X X Chief Financial Officer Signatures /s/ Chi Tsang as Managing Member of FutureCrest Acquisition Sponsor LLC 09/25/2025 Signature of Reporting Person Date /s/ Thomas Lee 09/25/2025 Signature of Reporting Person Date /s/ Chi Tsang 09/25/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )As described in the registration statement on Form S-1 (File No. 333-290088) of FutureCrest Acquisition Corp. (the "Issuer") under the heading "Description of Securities--Founder Shares," the shares of Class B ordinary shares will automatically convert into shares of Class A ordinary shares at the time of the Issuer's initial business combination, or at any time prior to the Issuer's initial business combination, at the option of the holder, on a one-for-one basis, subject to certain adjustments. The Class B ordinary shares have no expiration date. ( 2 )These shares represent the Class B ordinary shares held by FutureCrest Acquisition Sponsor LLC (the "Sponsor") acquired pursuant to a subscription agreement by and between the Issuer and the Sponsor. The Class B ordinary shares include up to 937,500 shares that are subject to forfeiture in the event the underwriters of the Issuer's initial public offering do not exercise in full their over-allotment option as described in the Issuer's registration statement. ( 3 )The Sponsor is the record holder of such shares. The managing members of the Sponsor are Mr. Thomas Lee and Mr. Chi Tsang. Mr. Lee is also the Chief Executive Officer and a director of the Issuer and Mr. Tsang is also the Chief Financial Officer and a director of the Issuer. Messrs. Lee and Tsang hold voting and investment discretion with respect to the ordinary shares held of record by the Sponsor. As such, Messrs. Lee and Tsang may be deemed to have beneficial ownership of the securities held of record by the Sponsor. Messrs. Lee and Tsang disclaim any beneficial ownership except to the extent of their pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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