Company: RMIX
Filing Date: 2025-11-12
Form Type: S-4
Source: 0001104659-25-110488
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Company: Suncrete, Inc.
Filing Date: 2025-11-12
Form: S-4
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TABLE OF CONTENTS

As filed with the Securities and Exchange Commission on November 12, 2025 Registration No. 333- UNITED STATES
SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-4 REGISTRATION STATEMENT
UNDER
THE SECURITIES ACT OF 1933 Suncrete, Inc. (Exact Name of Registrant as Specified in Its Charter) For co-registrants, see “Table of Co-Registrants” on the following page.

| ​ | Delaware                                                       
 (State or other jurisdiction ofincorporation or organization)​ | ​ | ​ | 3273                                                     
 (Primary Standard IndustrialClassification Code Number)​ | ​ | ​ | 39-4989597                             
 (I.R.S. EmployerIdentification Number) | ​ |

324 Royal Palm Way, Suite 300-I
Palm Beach, Florida 33480
(212) 616-9600 (Address, including zip code, and telephone number, including area code, of Registrant’s principal executive offices) c/o Haymaker Acquisition Corp. 4
324 Royal Palm Way, Suite 300-I
Palm Beach, Florida 33480
(212) 616-9600 (Name, address, including zip code, and telephone number, including area code, of agent for service) Copies to:

| ​ | Sidney BurkeStephen P. AlicantiDLA Piper LLP (US)1251 Avenue of the AmericasNew York, NY 10020Tel: (212) 335-4500 | ​ | ​ | Suncrete, Inc.324 Royal Palm Way, Suite 300-IPalm Beach, Florida 33480Tel: (212) 616-9600 | ​ | ​ | Matthew L. FryRachel O’DonnellHaynes and Boone, LLP2801 N. Harwood Street, Suite 2300Dallas, TX 75201Tel: (214) 651-5000 | ​ |

Approximate date of commencement of proposed sale of the securities to the public: As soon as practicable after this registration statement becomes effective and all other conditions to the business combination described in the enclosed proxy statement/prospectus have been satisfied or waived. If the securities being registered on this Form are being offered in connection with the formation of a holding company and there is compliance with General Instruction G, check the following box: ☐ If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the