Company: FCRS
Filing Date: 2025-09-17
Form Type: S-1/A
Source: 0001213900-25-088487
Chunk: 342

Company: FutureCrest Acquisition Corp.
Filing Date: 2025-09-17
Form: S-1/A
Chunk 342
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 under the Securities Act of 1933 to any purchaser in the initial distribution of the securities, the undersigned registrant undertakes that in a primary offering of securities of an undersigned registrant pursuant to this registration statement,

II-3 regardless of the underwriting method used to sell the securities to the purchaser, if the securities are offered or sold to such purchaser by means of any of the following communications, the undersigned registrant will be a seller to the purchaser and will be considered to offer or sell such securities to such purchaser: (i)any preliminary prospectus or prospectus of the undersigned registrant relating to the offering required to be filed pursuant to Rule 424; (ii)any free writing prospectus relating to the offering prepared by or on behalf of the undersigned registrant or used or referred to by an undersigned registrant; (iii)the portion of any other free writing prospectus relating to the offering containing material information about the undersigned registrant or its securities provided by or on behalf of the undersigned registrant; and (iv)any other communication that is an offer in the offering made by the undersigned registrant to the purchaser. II-4

SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in New York, New York, on the 17 thday of September, 2025.

| FutureCrest Acquisition Corp. |     |                         |
| By:                           |     | /s/ Thomas Lee          |
| Name:                         |     | Thomas Lee              |
| Title:                        |     | Chief Executive Officer |

Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed below by the following persons in the capacities and on the dates indicated.

| Name           
 /s/ Thomas Lee |     | Position                                    
 Chief Executive Officer and Director        |     | Date               
 September 17, 2025 |
|:---------------|:----|:--------------------------------------------|:----|:-------------------|
| Thomas Lee     |     | -principal executive officer                |     |                    |
| /s/ Chi Tsang  |     | Chief Financial Officer                     |     | September 17, 2025 |
| Chi Tsang      |     | -principal financial and accounting officer |     |                    |

II-5

AUTHORIZED REPRESENTATIVE