Suncrete (RMIX) holders report 34% Class A stake in Schedule 13D

Rhea-AI Filing Summary

Suncrete, Inc. investors led by SunTx and Ned N. Fleming III have disclosed a large ownership position in Class A Common Stock equivalent. The group reports beneficial ownership of 24,113,409 Class A-equivalent shares, representing 34.0% of the class, largely through convertible Class B shares and private warrants.

The stake arises from Suncrete’s April 8, 2026 business combination with Haymaker Acquisition Corp. 4, under which 20,914,609 Class B shares were issued to the reporting persons. Suncrete had 46,879,768 Class A shares outstanding as of April 8, 2026.

The investors hold registration rights for their securities and are subject to a lock-up under a Company Support Agreement, with 33.33% of their locked-up securities released after six months and another 33.33% after nine months. Private Warrants held by Dothan Independent allow purchases of Class A shares at $11.50 per share, exercisable from May 8, 2026 until April 8, 2031.

Key Figures

Beneficial ownership (Fleming group): 24,113,409 Class A-equivalent shares Suncrete Class A shares outstanding: 46,879,768 shares Dothan Concrete Investors stake: 18,414,609 Class A-equivalent shares +5 more

8 metrics

Beneficial ownership (Fleming group) 24,113,409 Class A-equivalent shares 34.0% of Class A Common Stock as disclosed in Item 13

Suncrete Class A shares outstanding 46,879,768 shares Shares of Class A Common Stock outstanding as of April 8, 2026

Dothan Concrete Investors stake 18,414,609 Class A-equivalent shares 28.2% of Class A Common Stock via convertible Class B shares

Dothan Independent / Dothan Sponsor stake 5,698,800 Class A-equivalent shares 10.8% of Class A Common Stock via Class B and Private Warrants

Private Warrants held 398,800 Private Warrants Warrants directly held by Dothan Independent

Warrant exercise price $11.50 per share Each Private Warrant entitles purchase of one Class A share at this price

Business combination issuance 20,914,609 Class B shares Issued to the reporting persons under the Business Combination Agreement

Additional Class B shares distributed 2,800,000 Class B shares Distributed by Haymaker Sponsor IV, LLC to Dothan Independent at closing

Key Terms

Schedule 13D, beneficially own, Registration Rights Agreement, Private Warrants, +2 more

6 terms

Schedule 13D regulatory

"If the filing person has previously filed a statement on Schedule 13G to report the acquisition..."

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

beneficially own financial

"Each of Dothan Concrete Manager, SunTx Capital Management and Mr. Fleming may be deemed to beneficially own securities of the Issuer..."

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

Registration Rights Agreement regulatory

"entered into a Registration Rights Agreement (the "Registration Rights Agreement"), pursuant to which Dothan Independent and Dothan Concrete Investors were granted customary registration rights..."

A registration rights agreement is a contract that gives investors the option to have their ownership stakes officially registered with the government, making it easier to sell their shares later. This agreement matters because it provides investors with a clearer path to cash out their investments if they choose, offering more liquidity and confidence in their ability to sell their holdings when desired.

Private Warrants financial

"398,800 shares of Class A Common Stock issuable upon the exercise of private placement warrants ("Private Warrants") directly held by Dothan Independent."

Company Support Agreement regulatory

"Dothan Independent and Dothan Concrete Investors are party to a company equityholder support agreement (the "Company Support Agreement")..."

lock-up restrictions financial

"will be automatically released from the lock-up restrictions on the six month anniversary of the closing date..."

A lock-up restriction is a temporary rule that prevents company insiders, early investors and employees from selling their shares for a set period after a public offering. It matters to investors because it limits how many shares can enter the market immediately—like a cooling-off period after a big sale—and when the restriction ends a large increase in available shares can put downward pressure on the stock price or reveal insiders’ confidence in the company.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

Suncrete, Inc.

(Name of Issuer)

Class A Common Stock

(Title of Class of Securities)

(CUSIP Number)

Ned N. Fleming, III
5420 LBJ Freeway, Suite 950
Dallas, TX, 75240
(972) 663-8900

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

04/08/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP No.

1

Name of reporting person

SunTx Capital Management Corp.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 18,414,609.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 18,414,609.00

11

Aggregate amount beneficially owned by each reporting person

18,414,609.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

28.2 %

14

Type of Reporting Person (See Instructions)

CO, HC

Comment for Type of Reporting Person:

In reference to Items 8, 10 and 11, represents shares of Class A Common Stock, par value $0.0001 per share ("Class A Common Stock"), of Suncrete Inc. (the "Issuer") issuable upon the conversion of shares of Class B Common Stock, par value $0.0001 per share, of the Issuer ("Class B Common Stock") directly held by Dothan Concrete Investors, LLC ("Dothan Concrete Investors"). In reference to Item 13, based on (a) 46,879,768 shares of Class A Common Stock outstanding as of April 8, 2026 and (b) an aggregate of 18,414,609 shares of Class B Common Stock, which are convertible into shares of Class A Common Stock by Dothan Concrete Investors within sixty (60) days of this Schedule 13D.

SCHEDULE 13D

CUSIP No.

1

Name of reporting person

Ned N. Fleming, III

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

UNITED STATES

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 24,113,409.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 24,113,409.00

11

Aggregate amount beneficially owned by each reporting person

24,113,409.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

34.0 %

14

Type of Reporting Person (See Instructions)

IN, HC

Comment for Type of Reporting Person:

In reference to Items 8, 10 and 11 represents (i) 18,414,609 shares of Class A Common Stock issuable upon the conversion of shares of Class B Common Stock directly held by Dothan Concrete Investors, (ii) 5,300,000 shares of Class A Common Stock issuable upon the conversion of shares of Class B Common Stock directly held by Dothan Independent GP, LP ("Dothan Independent") and (iii) 398,800 shares of Class A Common Stock issuable upon the exercise of private placement warrants ("Private Warrants") directly held by Dothan Independent. In reference to Item 13, based on (a) 46,879,768 shares of Class A Common Stock outstanding as of April 8, 2026 and (b) an aggregate of 24,113,409 shares of Class A Common Stock issuable upon the conversion or exercise of shares of Class B Common Stock or Private Warrants, respectively, by certain of the Reporting Persons (as defined herein) within sixty (60) days of this Schedule 13D.

SCHEDULE 13D

CUSIP No.

1

Name of reporting person

Dothan Independent GP, LP

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 5,698,800.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 5,698,800.00

11

Aggregate amount beneficially owned by each reporting person

5,698,800.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

10.8 %

14

Type of Reporting Person (See Instructions)

HC, PN

Comment for Type of Reporting Person:

In reference to Items 8, 10 and 11, represents (i) 5,300,000 shares of Class A Common Stock issuable upon the conversion of shares of Class B Common Stock directly held by Dothan Independent and (ii) 398,800 shares of Class A Common Stock issuable upon the exercise of Private Warrants directly held by Dothan Independent. In reference to Item 13, based on (a) 46,879,768 shares of Class A Common Stock outstanding as of April 8, 2026 and (b) an aggregate of 5,698,800 shares of Class A Common Stock issuable upon the conversion or exercise of shares of Class B Common Stock or Private Warrants, respectively, by Dothan Independent within sixty (60) days of this Schedule 13D.

SCHEDULE 13D

CUSIP No.

1

Name of reporting person

Dothan Sponsor, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 5,698,800.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 5,698,800.00

11

Aggregate amount beneficially owned by each reporting person

5,698,800.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

10.8 %

14

Type of Reporting Person (See Instructions)

HC, OO

Comment for Type of Reporting Person:

In reference to Items 8, 10 and 11, represents (i) 5,300,000 shares of Class A Common Stock issuable upon the conversion of shares of Class B Common Stock directly held by Dothan Independent and (ii) 398,800 shares of Class A Common Stock issuable upon the exercise of Private Warrants directly held by Dothan Independent. In reference to Item 13, based on (a) 46,879,768 shares of Class A Common Stock outstanding as of April 8, 2026 and (b) an aggregate of 5,698,800 shares of Class A Common Stock issuable upon the conversion or exercise of shares of Class B Common Stock or Private Warrants, respectively, by Dothan Independent within sixty (60) days of this Schedule 13D.

SCHEDULE 13D

CUSIP No.

1

Name of reporting person

Dothan Concrete Investors, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 18,414,609.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 18,414,609.00

11

Aggregate amount beneficially owned by each reporting person

18,414,609.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

28.2 %

14

Type of Reporting Person (See Instructions)

HC, OO

Comment for Type of Reporting Person:

With respect to Items 8, 10 and 11, represents shares of Class A Common Stock issuable upon the conversion of shares of Class B Common Stock directly held by Dothan Concrete Investors. In reference to Item 13, based on (a) 46,879,768 shares of Class A Common Stock outstanding as of April 8, 2026 and (b) an aggregate of 18,414,609 shares of Class B Common Stock, which are convertible into shares of Class A Common Stock by Dothan Concrete Investors within sixty (60) days of this Schedule 13D.

SCHEDULE 13D

CUSIP No.

1

Name of reporting person

Dothan Concrete Manager, LLC

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

OO

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

TEXAS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 18,414,609.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 18,414,609.00

11

Aggregate amount beneficially owned by each reporting person

18,414,609.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

28.2 %

14

Type of Reporting Person (See Instructions)

HC, OO

Comment for Type of Reporting Person:

In reference to Items 8, 10 and 11, represents shares of Class A Common Stock issuable upon the conversion of shares of Class B Common Stock directly held by Dothan Concrete Investors. In reference to Item 13, based on (a) 46,879,768 shares of Class A Common Stock outstanding as of April 8, 2026 and (b) an aggregate of 18,414,609 shares of Class B Common Stock, which are convertible into shares of Class A Common Stock by Dothan Concrete Investors within sixty (60) days of this Schedule 13D.

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Class A Common Stock
(b)	Name of Issuer: Suncrete, Inc.
(c)	Address of Issuer's Principal Executive Offices: 817 E. 4th Street, Tulsa, OKLAHOMA , 74120.
Item 2.	Identity and Background
(a)	This statement is jointly filed by and on behalf of each of (i) SunTx Capital Management Corp., (ii) Ned N. Fleming, III, (iii) Dothan Independent GP, LP, (iv) Dothan Sponsor, LLC, (v) Dothan Concrete Investors, LLC and (vii) Dothan Concrete Manager, LLC (collectively, the "Reporting Persons"). The manager of Dothan Concrete Investors is Dothan Concrete Manager. The manager of Dothan Concrete Manager is SunTx Capital Management. Mr. Fleming is the sole shareholder and director of SunTx Capital Management. Each of Dothan Concrete Manager, SunTx Capital Management and Mr. Fleming may be deemed to beneficially own securities of the Issuer held by Dothan Concrete Investors. The general partner of Dothan Independent is Dothan Sponsor. Mr. Fleming is the sole manager of Dothan Sponsor. Each of Dothan Independent, Dothan Sponsor and Mr. Fleming may be deemed to beneficially own securities of the Issuer held by Dothan Independent.
(b)	The address of the principal business office of each of the Reporting Persons is 5420 LBJ Freeway, Suite 950, Dallas, TX, 75240.
(c)	The present principal occupation of Mr. Fleming is serving as a Founding Partner and the Managing Partner of SunTx Capital Partners and as Executive Chairman of the Board of Directors of the Issuer. The principal business of each of the remaining Reporting Persons is to either invest in securities or serve as a general partner or management to a company that invests in securities.
(d)	Not applicable.
(e)	Not applicable.
(f)	SunTx Capital Management Corp. is a Texas corporation; Ned N. Fleming, III is a citizen of the United States; Dothan Independent GP, LP is a Texas limited partnership; Dothan Sponsor, LLC is a Texas limited liability company; Dothan Concrete Investors, LLC is a Texas limited liability company; and Dothan Concrete Manager, LLC is a Texas limited liability company.
Item 3.	Source and Amount of Funds or Other Consideration
	The information set forth in Item 4 and Item 6 of this Schedule 13D is incorporated by reference herein. On April 8, 2026, the Issuer consummated its previously announced business combination (the "Business Combination") pursuant to that certain Business Combination Agreement, dated October 9, 2025 (the "Business Combination Agreement"), by and among the Issuer, Haymaker Acquisition Corp. 4 ("Haymaker"), a Cayman Islands exempted company, Haymaker Merger Sub I, Inc., a Delaware corporation and a direct wholly owned subsidiary of the Issuer, Haymaker Merger Sub II, LLC, a Delaware limited liability company and direct wholly owned subsidiary of the Issuer, and Concrete Partners Holding, LLC, a Delaware limited liability company. An aggregate of 20,914,609 shares of Class B Common Stock were issued by the Issuer to the Reporting Persons pursuant to the Business Combination Agreement and the transactions contemplated thereby. Also pursuant to the Business Combination Agreement, on April 8, 2026, Haymaker Sponsor IV, LLC distributed to Dothan Independent (i) 2,800,000 shares of Class B Common Stock of Haymaker, which were then canceled and converted into the same number of shares of Class B Common Stock of the Issuer pursuant to the Business Combination Agreement, and (i) 398,800 private warrants of Haymaker, which were then automatically assumed and converted into 398,800 Private Warrants of the Issuer pursuant to the Business Combination Agreement.
Item 4.	Purpose of Transaction
	The information set forth in Items 3 and 6 of this Schedule 13D is incorporated by reference in its entirety into this Item 4. The Reporting Persons intend to review their investment in the Issuer on a continuing basis taking into consideration various factors, including the Issuer's business, financial condition, results of operations and prospects, general economic and industry conditions, the securities markets in general and those for shares of Class A Common Stock of the Issuer, in particular, as well as other developments and other investment opportunities. Based upon such review, the Reporting Persons will take such actions in the future as the Reporting Persons may deem appropriate in light of the circumstances existing from time to time. Subject to the Issuer's insider trading policy, any open market or privately negotiated purchases or sales, acquisition recommendations or proposals or other transactions concerning the Issuer may be made at any time without prior notice. Any alternative may depend upon a variety of factors, including, without limitation, current and anticipated future trading prices of the securities, the financial condition, results of operations and prospects of the Issuer and general industry conditions, the availability, form and terms of financing, other investment and business opportunities, general stock market and economic conditions, tax considerations and other factors. Depending upon each factor discussed above and any other factor (which may be unknown at this time) that is, or may become relevant, the Reporting Persons may consider, among other things: (a) the acquisition by the Reporting Persons of additional securities of the Issuer, the disposition of securities of the Issuer, or the exercise of convertible securities of the Issuer; (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Issuer or any of its subsidiaries; (c) a sale or transfer of a material amount of assets of the Issuer or any of its subsidiaries; (d) changes in the present Board of Directors of the Issuer or management of the Issuer; (e) a material change in the present capitalization or dividend policy of the Issuer; (f) any other material change in the Issuer's business or corporate structure; (g) changes in the Issuer's certificate of incorporation, bylaws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Issuer by any person; (h) causing any class of the Issuer's securities to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association; (i) a class of equity securities of the Issuer becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Act; or (j) any action similar to those enumerated above. Except to the extent that the foregoing may be deemed to be a plan or proposal, the Reporting Persons do not currently have any plans or proposals that relate to or would result in any of the actions specified in clause (a) through (j) of this Item 4 of Schedule 13D. Depending upon the foregoing factors and to the extent deemed advisable in light of their general investment policies, or other factors, the Reporting Persons may, at any time and from time to time, formulate other purposes, plans or proposals regarding the Issuer or the shares of Class A Common Stock of the Issuer, or any other actions that could involve one or more of the types of transactions or have one or more of the results described in paragraphs (a) through (j) of this Item 4 of Schedule 13D. The foregoing is subject to change at any time, and there can be no assurance that the Reporting Persons will take any of the actions set forth above.
Item 5.	Interest in Securities of the Issuer
(a)	The aggregate number and percentage of the class of securities identified pursuant to Item 1 beneficially owned by the Reporting Persons is stated in Items 11 and 13 on the cover page(s) hereto. The Reporting Persons declare that neither the filing of this Schedule 13D nor anything herein shall be construed as an admission that such persons are, for the purposes of Section 13(d) or 13(g) of the Act or any other purpose, the beneficial owner of any securities covered by this Schedule 13D.
(b)	The Number of Shares as to which each Reporting Person has: (i) sole power to vote or to direct the vote: See Item 7 on the cover page(s) hereto. (ii) shared power to vote or to direct the vote: See Item 8 on the cover page(s) hereto. (iii) sole power to dispose or to direct the disposition of: See Item 9 on the cover page(s) hereto. (iv) shared power to dispose or to direct the disposition of: See Item 10 on the cover page(s) hereto.
(c)	The information provided or incorporated by reference in Item 6 is incorporated by reference herein.
(d)	Not applicable.
(e)	Not applicable.
Item 6.	Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer
	The information set forth in Item 3 of this Schedule 13D is incorporated by reference in its entirety into this Item 6. Registration Rights Agreement On April 8, 2026, the Issuer and certain members of Concrete Partners Holding, LLC prior to the Business Combination, including Dothan Independent and Dothan Concrete Investors, entered into a Registration Rights Agreement (the "Registration Rights Agreement"), pursuant to which Dothan Independent and Dothan Concrete Investors were granted customary registration rights with respect to the Issuer securities held by such parties following the closing of the Business Combination. In certain circumstances, the parties to the Registration Rights Agreement can demand the Issuer's assistance with underwritten offerings and block trades, and the parties to the Registration Rights Agreement are entitled to certain piggyback registration rights. The foregoing summary of the Registration Rights Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Registration Rights Agreement. A copy of the Registration Rights Agreement is included as Exhibit 99.2 to this Schedule 13D and is incorporated herein by reference. Warrant Agreement Pursuant to the warrant agreement by and between Haymaker Acquisition Corp. 4 and Continental Stock Transfer & Trust Company, dated July 25, 2023 (the "Warrant Agreement'), as amended by Amendment No. 1 to the Warrant Agreement, dated April 8, 2026 (the "Warrant Amendment"), each Private Warrant entitles the holder to purchase one share of Class A Common Stock at an exercise price of $11.50 per share. The Private Warrants will become exercisable on May 8, 2026 and will expire on April 8, 2031, or earlier upon redemption or liquidation. The foregoing summary of the Warrant Agreement and Warrant Amendment does not purport to be complete and is qualified in its entirety by reference to the full text of the Warrant Agreement and Warrant Amendment, copies of which is included as Exhibits 99.3 and 99.4, respectively, to this Schedule 13D and are incorporated herein by reference. Company Support Agreement Dothan Independent and Dothan Concrete Investors are party to a company equityholder support agreement (the "Company Support Agreement"), pursuant to which Dothan Independent and Dothan Concrete Investors have agreed not to, during the period commencing from the closing date of the Business Combination and ending on the earlier of (i) the one year anniversary of the closing date of the Business Combination and (ii) the date after the closing date of the Business Combination on which the Issuer consummates a liquidation, merger, share exchange, reorganization or other similar transaction with an unaffiliated third party that results in all of the Issuer's stockholders having the right to exchange their equity holdings in the Issuer for cash, securities or other property: (a) lend, offer, pledge, hypothecate, encumber, donate, assign, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, establish or increase of a put equivalent position or liquidation with respect to or decrease of a call equivalent position, or otherwise transfer or dispose of, directly or indirectly, any securities of the Issuer, or any securities of Issuer issued to such holder pursuant to the Business Combination Agreement (such securities, the "Lock-up Securities"), (b) enter into any swap or other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of the Lock-up Securities, or (c) publicly announce the intention to do any of the foregoing, subject to certain exceptions. Notwithstanding the foregoing, pursuant to the Company Support Agreement, (i) 33.33% of the Lock-up Securities held by the applicable holder as of the closing date of the Business Combination will be automatically released from the lock-up restrictions on the six month anniversary of the closing date of the Business Combination and (ii) 33.33% of the Lock-up Securities held by the applicable holder as of the closing date of the Business Combination will be automatically released from the lock-up restrictions on the nine month anniversary of the closing date of the Business Combination. The foregoing summary of the Company Support Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Company Support Agreement. A copy of the Company Support Agreement is included as Exhibit 99.5 to this Schedule 13D and is incorporated herein by reference.
Item 7.	Material to be Filed as Exhibits.
	99.1 - Business Combination Agreement (Incorporated by reference to Exhibit 2.1 to Haymaker Acquisition Corp. 4's Current Report on Form 8-K/A, filed with the Securities and Exchange Commission on October 14, 2025). 99.2 - Registration Rights Agreement, dated April 8, 2026, by and among the Company, Dothan Concrete, Dothan Independent and Eaglesnest Investments, LLC (Incorporated by reference to Exhibit 10.2 to Suncrete, Inc.'s Current Report on Form 8-K, filed with the Securities and Exchange Commission on April 14, 2026). 99.3 - Warrant Agreement, dated July 25, 2023, by and between Haymaker Acquisition Corp. 4 and Continental Stock Transfer & Trust Company, as Warrant Agent (Incorporated by reference to Exhibit 4.1 to Haymaker Acquisition Corp. 4's Current Report on Form 8-K, filed with the SEC on July 31, 2023). 99.4 - Amendment No. 1 to Warrant Agreement, dated April 8, 2026, by and between Haymaker Acquisition Corp. 4 and Continental Stock Transfer & Trust Company (Incorporated by reference to Exhibit 4.2 to Suncrete, Inc.'s Current Report on Form 8-K, filed with the Securities and Exchange Commission on April 14, 2026). 99.5 - Form Company Support Agreement (Incorporated by reference to Exhibit 10.1 to Haymaker Acquisition Corp. 4's Current Report on Form 8-K, filed with the Securities and Exchange Commission on October 10, 2025 (as amended on October 14, 2025)). 99.6 - Joint Filing Agreement (filed herewith).

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

SunTx Capital Management Corp.

Signature:	/s/ Ned N. Fleming, III
Name/Title:	Ned N. Fleming, III, Director
Date:	04/15/2026

Ned N. Fleming, III

Signature:	/s/ Ned N. Fleming, III
Name/Title:	Ned N. Fleming, III
Date:	04/15/2026

Dothan Independent GP, LP

Signature:	/s/ Ned N. Fleming, III
Name/Title:	By: Dothan Sponsor, LLC, its general partner, Name: /s/ Ned N. Fleming, III, Manager
Date:	04/15/2026

Dothan Sponsor, LLC

Signature:	/s/ Ned N. Fleming, III
Name/Title:	Ned N. Fleming, III, Manager
Date:	04/15/2026

Dothan Concrete Investors, LLC

Signature:	/s/ Ned N. Fleming
Name/Title:	By: Dothan Concrete Manager, LLC, its manager, By: SunTx Capital Management Corp., its manager, Name: /s/ Ned N. Fleming, III, Director
Date:	04/15/2026

Dothan Concrete Manager, LLC

Signature:	/s/ Ned N. Fleming
Name/Title:	By: SunTx Capital Management Corp., its manager, Name: /s/ Ned N. Fleming, III, Director
Date:	04/15/2026

FAQ

What ownership stake in Suncrete (RMIX) is reported in this Schedule 13D?

The reporting group discloses beneficial ownership of 24,113,409 Class A-equivalent shares, representing 34.0% of Suncrete’s Class A Common Stock. This position is mainly held through convertible Class B shares and private warrants acquired in the April 8, 2026 business combination.

How many Suncrete (RMIX) shares are outstanding as of April 8, 2026?

Suncrete has 46,879,768 shares of Class A Common Stock outstanding as of April 8, 2026. The reported 24,113,409 Class A-equivalent shares are measured against this base to calculate the 34.0% beneficial ownership disclosed by the reporting persons.

Who are the main reporting persons in the Suncrete (RMIX) Schedule 13D?

The Schedule 13D is jointly filed by SunTx Capital Management Corp., Ned N. Fleming III, Dothan Independent GP, LP, Dothan Sponsor, LLC, Dothan Concrete Investors, LLC, and Dothan Concrete Manager, LLC, which together report significant beneficial ownership of Suncrete Class A-equivalent shares.

How did the Suncrete (RMIX) reporting holders acquire their position?

Their ownership primarily comes from Suncrete’s April 8, 2026 business combination with Haymaker Acquisition Corp. 4. An aggregate 20,914,609 shares of Class B Common Stock and 398,800 Private Warrants were issued or assumed under the Business Combination Agreement and related sponsor distributions.

What are the key terms of the Suncrete (RMIX) Private Warrants?

Each Private Warrant allows the holder to purchase one share of Suncrete Class A Common Stock at an exercise price of $11.50 per share. The Private Warrants become exercisable on May 8, 2026 and expire on April 8, 2031, unless earlier redeemed or upon liquidation.

What lock-up restrictions affect the Suncrete (RMIX) reporting holders?

Under a Company Support Agreement, Dothan Independent and Dothan Concrete Investors agree not to transfer specified Suncrete securities for up to one year from the business combination closing. However, 33.33% of their lock-up securities are released after six months, and another 33.33% after nine months.