Insight Equity SC 13D/A RMX / Insight Equity ownership change

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

______________

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 4)*

RMX Holdings, Inc.

(Name of Issuer)

Common Stock, Par Value $0.001 Per Share

(Title of Class of Securities)

755747102

(CUSIP Number)

Insight Equity Holdings LLC

c/o Insight Equity Management Company LLC

1400 Civic Place, Suite 250

Southlake, TX 76092

Attn: Conner Searcy

(817) 488-7775

(Name, Address and Telephone Number of Persons Authorized to Receive

Notices and Communications)

with copies to:

Ronald J. Lieberman, Esq.

Hunton & Williams LLP

Bank of America Plaza

Suite 4100

600 Peachtree Street, N.E.

Atlanta, Georgia 30308-2216

(404) 888-4000

May 11, 2010

(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, and is filing this schedule because of Section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. o

Note. Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent.

*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

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).


1.	NAMES OF REPORTING PERSONS Meadow Valley Parent Corp.
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS BK, AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON CO


1.	NAMES OF REPORTING PERSONS Meadow Valley Solutions LLC
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON OO


1.	NAMES OF REPORTING PERSONS Meadow Valley Resources LLC
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Texas
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON OO


1.	NAMES OF REPORTING PERSONS Meadow Valley Holdings LLC
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON OO


1.	NAMES OF REPORTING PERSONS Insight Equity I LP
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON PN


1.	NAMES OF REPORTING PERSONS Insight Equity GP I LP
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON PN


1.	NAMES OF REPORTING PERSONS Insight Equity Holdings I LLC
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Delaware
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON OO


1.	NAMES OF REPORTING PERSONS Insight Equity Holdings LLC
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS AF, OO
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION Texas
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 0
		8.	SHARED VOTING POWER 2,645,212
		9.	SOLE DISPOSITIVE POWER 0
		10.	SHARED DISPOSITIVE POWER 2,645,212
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,645,212
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 69.4%
14.	TYPE OF REPORTING PERSON OO


1.	NAMES OF REPORTING PERSONS Bradley E. Larson
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS PF
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION United States of America
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 13,416
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 13,416
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 13,416
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.4%
14.	TYPE OF REPORTING PERSON IN


1.	NAMES OF REPORTING PERSONS Kenneth D. Nelson
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS PF
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION United States of America
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 14,416
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 14,416
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,416
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.4%
14.	TYPE OF REPORTING PERSON IN


1.	NAMES OF REPORTING PERSONS Robert W. Bottcher
2.	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a) (b)	o x
3.	SEC USE ONLY
4.	SOURCE OF FUNDS PF
5.	CHECK IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e)				o
6.	CITIZENSHIP OR PLACE OF ORGANIZATION United States of America
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7.	SOLE VOTING POWER 500
		8.	SHARED VOTING POWER 0
		9.	SOLE DISPOSITIVE POWER 500
		10.	SHARED DISPOSITIVE POWER 0
11.	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 500
12.	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				o
13.	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.0%
14.	TYPE OF REPORTING PERSON IN

This Amendment No. 4 (“Amendment No. 4”) amends and supplements the Schedule 13D originally filed by Meadow Valley Parent Corp., a Delaware corporation (“Meadow Valley Parent”), Meadow Valley Solutions LLC, a Delaware limited liability company (“Meadow Valley Solutions”), Meadow Valley Resources LLC, a Texas limited liability company (“Meadow Valley Resources”), Meadow Valley Holdings LLC, a Delaware limited liability company (“Meadow Valley Holdings”), Insight Equity I LP, a Delaware limited partnership (“Insight Equity”), Insight Equity GP I LP, a Delaware limited partnership (“Insight Equity GP”), Insight Equity Holdings I LLC, a Delaware limited liability company (“Insight Equity Holdings I”), Insight Equity Holdings LLC, a Texas limited liability company (“Insight Equity Holdings”), Bradley E. Larson, a citizen of the United States of America, Kenneth D. Nelson, a citizen of the United States of America, and Robert W. Bottcher, a citizen of the United States of America (collectively, the “Reporting Persons”)1 on February 5, 2009 (the “Initial Statement”), as amended by Amendment No. 1 thereto (“Amendment No. 1”) filed on March 17, 2009, Amendment No. 2 thereto (“Amendment No. 2”) filed on June 18, 2009 and Amendment No. 3 thereto (“Amendment No. 3”) filed on February 1, 2010, with respect to the common stock, par value $0.001 per share (the “Common Stock”), of RMX Holdings, Inc. f/k/a Ready Mix, Inc. (the “Issuer” or “RMX”). The Initial Statement, as amended by Amendment No. 1, Amendment No. 2, Amendment No. 3 and this Amendment No. 4, is referred to herein as the “Schedule 13D.” The Reporting Persons have entered into a Joint Filing Agreement, dated as of May 12, 2010, a copy of which is attached as Exhibit 99.1 hereto. Capitalized terms used but not defined in this Amendment No. 4 shall have the meanings given in the Initial Statement.

Item 4. Purpose of Transaction.

Item 4 of the Schedule 13D is hereby amended and supplemented by the addition of the following information:

On May 11, 2010, Meadow Valley Parent sent a letter (the “Letter”) to the board of directors (the “Board”) of the Issuer encouraging the Board to (i) promptly declare a special cash distribution in the amount of $5,000,000 and (ii) undertake immediate action to conduct a 1 for 2,645,212 reverse stock split of its issued and outstanding shares of Common Stock (the “Proposed Transaction”). If successful, completion of the Proposed Transaction would, among other things, (i) cause Meadow Valley Parent to become the sole stockholder of the Issuer, (ii) cause the delisting of the Common Stock from the NYSE Amex LLC to the extent such delisting had not already occurred and (iii) cause the Common Stock to become eligible for termination of registration pursuant to Section 12 of the Securities Exchange Act of 1934, as amended. Meadow Valley Parent encouraged the Board in the Letter to form a special committee to determine what is in the best interests of all of the Issuer’s stockholders and stated that is was ready to work with the special committee to complete the Proposed Transaction quickly and cost effectively.

The description of the Letter contained herein is qualified in its entirety by the Letter set forth as Exhibit 99.2 hereto, which is incorporated herein by reference.

Meadow Valley Contractors, Inc., a Nevada corporation (“MVCI”) and a subsidiary of Meadow Valley Parent, had proposed to the Issuer that it purchase the office building owned by the Issuer and located at 4602. E. Thomas Road Phoenix, Arizona (the “Office Building”), as reported in Amendment No. 3. MVCI has determined not to pursue the purchase of the Office Building pending the outcome of the Issuer’s response to the Proposed Transaction.

The Reporting Persons do not have any present plan or proposal that would relate to or result in any of the matters set forth in subparagraphs (a) - (j) of Item 4 of Schedule 13D except as set forth in this Schedule 13D or such as would occur in connection with any of the proposals discussed in this Schedule 13D.

Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Item 6 of the Schedule 13D is hereby amended and supplemented by the addition of the following information:

1 Neither the present filing nor anything contained herein shall be construed as an admission that any Reporting Person constitutes a “person” for any purpose other than for compliance with Section 13(d) of the Act.

The information set forth in Item 4 of this Amendment No. 4 is incorporated herein by reference.

Item 7. Material to Be Filed as Exhibits.

Item 7 of Schedule 13D is hereby amended and supplemented by the addition of the following exhibits:


	Exhibit 99.1	Joint Filing Agreement, dated May 12, 2010.

	Exhibit 99.2	Letter, dated May 11, 2010, from Meadow Valley Parent Corp. to the Board of Directors of RMX Holdings, Inc.

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.

Dated: May 12, 2010


MEADOW VALLEY PARENT CORP.

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact


MEADOW VALLEY SOLUTIONS LLC

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact


MEADOW VALLEY HOLDINGS LLC

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact


MEADOW VALLEY RESOURCES LLC

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact

INSIGHT EQUITY I LP

By:	Insight Equity GP I LP
By:	Insight Equity Holdings I LLC

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact


INSIGHT EQUITY GP I LP

By:	Insight Equity Holdings I LLC

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact


INSIGHT EQUITY HOLDINGS I LLC

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact


INSIGHT EQUITY HOLDINGS LLC

By:	/s/ Robert J. Conner
	Name:	Robert J. Conner
	Title:	Attorney-in-fact


BRADLEY E. LARSON

/s/ Bradley E. Larson


KENNETH D. NELSON

/s/ Kenneth D. Nelson


ROBERT W. BOTTCHER

/s/ Robert W. Bottcher

Insight Equity Inactive SC 13D/ARMX / Insight Equity ownership change