Filed Pursuant to Rule 424(b)(3)
Registration No. 333-295732
PROSPECTUS SUPPLEMENT NO. 9
(to Prospectus dated
May 14, 2026)
SUNCRETE, INC.
52,299,704 Shares of Class A Common Stock
(Inclusive of 23,714,609 shares of Class A Common Stock Issuable Upon Conversion of Class B Common Stock, 473,800 shares of
Class A Common Stock Underlying Warrants, 2,525,094 shares of Class A Common Stock Underlying Pre-Funded Warrants, 1,444,445 shares of Class A Common Stock Underlying Series A Convertible
Perpetual Preferred Stock and 695,110 shares of Class A Common Stock Issuable Upon Exchange of HoldCo Class B Common Shares)
473,800 Warrants to Purchase Shares of Class A Common Stock
This prospectus supplement updates and supplements the prospectus of Suncrete, Inc., a Delaware corporation (the “Company,”
“we,” “us” or “our”), dated May 14, 2026, which forms a part of our Registration Statement on Form S-1 (Registration
No. 333-295732) (the “Prospectus”), relating to the offer and resale by the selling stockholders identified in the Prospectus, as supplemented by this prospectus supplement, or their permitted
transferees (the “Selling Holders”), of up to an aggregate of (i) up to 23,446,646 shares of our Class A common stock, par value $0.0001 per share (“Class A Common Stock”), held by certain Selling Holders,
(ii) up to 23,714,609 shares of Class A Common Stock issuable upon the conversion of 23,714,609 shares of our Class B common stock, par value $0.0001 per share (“Class B Common Stock” and, together with the
Class A Common Stock, the “Common Stock”), held by certain Selling Holders, (iii) up to 473,800 shares of Class A Common Stock underlying warrants to purchase 473,800 shares of Class A Common Stock (the
“Warrants”) held by certain Selling Holders, (iv) up to 2,525,094 shares of Class A Common Stock underlying pre-funded warrants to purchase 2,525,094 shares of Class A Common Stock
(the “Pre-Funded Warrants”) held by certain Selling Holders, (v) up to 1,444,445 shares of Class A Common Stock issuable upon conversion of 26,000 shares of Series A Convertible Perpetual
Preferred Stock, par value $0.0001 per share (the “Series A Preferred Stock”), held by certain Selling Holders, (vi) up to 695,110 shares of Class A Common Stock issuable upon the exchange of 69,511 shares of Class B
common stock, par value $0.0001 per share (the “HoldCo Class B Common Shares”), of our subsidiary, Suncrete Intermediate, Inc. (“Purchaser HoldCo”), held by certain Selling Holders (the “HoldCo Rollover
Securities”), and (vii) up to 473,800 Warrants held by certain Selling Holders. The Prospectus also relates to the issuance by us (with respect to 75,000 of such Warrants, solely to persons other than the original purchaser thereof or its
affiliates), of up to 473,800 shares of Class A Common Stock that may be issued upon exercise of 473,800 Warrants registered for resale thereby. The shares of Class A Common Stock and the Warrants that may be sold by the Selling Holders
and the shares of Class A Common Stock that may be issued by us are collectively referred to in this Prospectus as the “Offered Securities.” We will not receive any of the proceeds from the sale by the Selling Holders of the
Offered Securities.
This prospectus supplement is being filed solely to update the “Selling Holders” section of the
Prospectus to reflect (i) the pro rata distribution of shares of Class A Common Stock and Warrants previously held by Haymaker Sponsor IV LLC (“Sponsor”) to certain of its members (the “Haymaker Distribution”), (ii)
the pro rata distribution of shares of Class B Common Stock previously held by Dothan Concrete Investors, LLC (“Dothan Concrete”) to certain of its members (the “Dothan Concrete Distribution”) and (iii) the pro rata
distribution of shares of Class B Common Stock and Warrants previously held by Dothan Independent GP, LP (“Dothan Independent”) to certain of its limited partners (the “Dothan Independent Distribution,” and together with
the Dothan Concrete Distribution, the “Dothan Distributions”). Pursuant to the Company’s Amended and Restated Certificate of Incorporation (the “Company Charter”), (i) 8,212,308 shares of Class B Common Stock that
were distributed in the Dothan Distributions were