EX-4.15.3

SUPPLEMENTAL INDENTURE No. 3, dated as of March 25, 2013, among CEMEX, S.A.B. de C.V., a sociedad anónima bursátil de capital variable organized under the laws of the United Mexican States (the “Issuer”), the existing guarantors under the Indenture (as defined below) listed on Schedule I hereto (collectively, the “Existing Guarantors”), the additional guarantors listed on Schedule II hereto (collectively, the “New Guarantors” and, together with the Existing Guarantors, the “Note Guarantors”) and The Bank of New York Mellon, as trustee (the “Trustee”).

WHEREAS, the Issuer, the Existing Guarantors and the Trustee previously have entered into an indenture, dated as of January 11, 2011, as supplemented by Supplemental Indenture No. 1 thereto, dated as of July 11, 2011, and Supplemental Indenture No. 2 thereto, dated as of September 17, 2012, (as supplemented, the “Indenture”), providing for the issuance of the Issuer’s 9.000% Senior Secured Notes due 2018 (the “Notes”);

WHEREAS, Section 9.1(a)(iv) of the Indenture provides that the Issuer, the Existing Guarantors and the Trustee may enter into a supplemental indenture without notice to or consent of any Holder to add guarantees with respect to the Notes;

WHEREAS, the Issuer desires to amend and supplement the Indenture as provided in Article II hereof to provide for the guarantee by the New Guarantors of the Issuer’s Obligations under the Notes and the Indenture on the terms and conditions set forth herein;

WHEREAS, the Issuer and the Note Guarantors are authorized to execute and deliver this Supplemental Indenture No. 3;

WHEREAS, the Issuer has requested that the Trustee join in the execution of this Supplemental Indenture No. 3 pursuant to Section 9.6 of the Indenture; and

WHEREAS, all things necessary to make this Supplemental Indenture No. 3 a valid agreement of the parties and a valid supplement to the Indenture have been done.

NOW, THEREFORE, for and in consideration of the premises and the mutual covenants contained herein and in the Indenture and for other good and valuable consideration, the receipt and sufficiency of which are herein acknowledged, the Issuer, the Note Guarantors and the Trustee hereby agree, for the benefit of all Holders, as follows:

Section 1.01. Section 1.01 Defined Terms. All capitalized terms used but not defined herein shall have the meanings ascribed to such terms in the Indenture, as supplemented and amended hereby. All definitions in the Indenture shall be read in a manner consistent with the terms of this Supplemental Indenture No. 3.

Section 2.01 Agreement to Guarantee. Each New Guarantor hereby agrees, jointly and severally with the other Note Guarantors, irrevocably, fully and unconditionally, to guarantee the Obligations under the Indenture and the Notes on the terms and subject to the conditions set forth in Article X of the Indenture and to be bound by (and shall be entitled to the benefits of) all other applicable provisions of the Indenture as a Note Guarantor.

Section 3.01. Effect of This Supplemental Indenture No. 3. This Supplemental Indenture No. 3 supplements the Indenture and shall be a part, and subject to all the terms, thereof. The Indenture, as supplemented and amended by this Supplemental Indenture No. 3, is in all respects ratified and confirmed, and the Indenture and this Supplemental Indenture No. 3 shall be read, taken and construed as one and the same instrument. All provisions included in this Supplemental Indenture No. 3 supersede any conflicting provisions included in the Indenture, unless not permitted by law.

Section 3.02 Governing Law. This Supplemental Indenture No. 3 shall be governed by, and construed in accordance with, the laws of the State of New York.

Section 3.03 Effect of Headings. The section headings herein are for convenience only and shall not affect the construction of this Supplemental Indenture No. 3.

Section 3.04 Counterparts. The parties may sign any number of copies of this Supplemental Indenture No. 3. Each signed copy shall be an original, but all of them shall represent the same agreement.

Section 3.05 The Trustee. The Trustee shall not be responsible in any manner whatsoever for or in respect of the validity or sufficiency of this Supplemental Indenture No. 3 or for or in respect of the recitals contained herein, all of which are made solely by the Issuer and the Note Guarantors. In entering into this Supplemental Indenture No. 3, the Trustee shall be entitled to the benefit of every provision of the Indenture relating to the conduct or affecting the

liability or affording protection to the Trustee whether or not elsewhere herein so provided. The Issuer and the Note Guarantors expressly reaffirm and confirm their obligations to indemnify the Trustee in connection with the Indenture and all the actions contemplated hereby, all in accordance with the terms of the Indenture.

IN WITNESS WHEREOF, the parties have caused this Supplemental Indenture No. 3 to be duly executed as of the date first written above.


CEMEX, S.A.B. de C.V., as Issuer

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX México, S.A. de C.V., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX España, S.A., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

New Sunward Holding B.V., as Additional Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX Research Group AG, as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

[Signature page to Supplemental Indenture No. 3 (9.000% Senior Secured Notes due 2018)]


CEMEX Shipping B.V., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX Asia B.V., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX France Gestion (S.A.S.), as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX UK, as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX Egyptian Investments B.V., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

[Signature page to Supplemental Indenture No. 3 (9.000% Senior Secured Notes due 2018)]


CEMEX Corp., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

CEMEX Concretos, S.A. de C.V., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

Empresas Tolteca de México, S.A. de C.V., as Note Guarantor

By:	/s/ Héctor José Vela Dib
	Name:	Héctor José Vela Dib
	Title:	Attorney-In-Fact

[Signature page to Supplemental Indenture No. 3 (9.000% Senior Secured Notes due 2018)]


THE BANK OF NEW YORK MELLON, as Trustee

By:	/s/ John T. Needham, Jr.
	Name:	John T. Needham, Jr.
	Title:	Vice President