UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 or 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of August, 2020

Commission File Number: 001-14946

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

(Translation of Registrant’s name into English)

Avenida Ricardo Margáin Zozaya #325, Colonia Valle del Campestre,

San Pedro Garza García, Nuevo León 66265, México

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Form 20-F  ☒            Form 40-F  ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Contents

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, CEMEX, S.A.B. de C.V. has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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EXHIBIT INDEX

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Exhibit 1

CEMEX CLOSES DIVESTMENT OF CERTAIN ASSETS IN THE UK

MONTERREY, MEXICO. AUGUST 3, 2020 – CEMEX, S.A.B. de C.V. (“CEMEX”) (NYSE: CX) announced today that it has successfully closed the previously announced sale of certain assets in the United Kingdom to Breedon Group (“Breedon”), for a total consideration of approximately U.S.$230 million, which includes approximately U.S.$30 million of debt. The assets generated approximately U.S.$29 million of EBITDA in 2018.

CEMEX remains committed to the United Kingdom and maintains a significant footprint in key geographies. It retains the core of its integrated business, encompassing cement production, ready-mix concrete, aggregates, asphalt, and paving solutions, among others.

With the closing of this transaction, CEMEX has met its stated asset sales target of between U.S.$1.5 billion and U.S.$2.0 billion, under its “A Stronger CEMEX” plan that runs from June 2018 until the end of 2020. Proceeds from this divestment will be applied for debt reduction and for general corporate purposes.

CEMEX is a global building materials company that provides high-quality products and reliable services. CEMEX has a rich history of improving the well-being of those it serves through innovative building solutions, efficiency advancements, and efforts to promote a sustainable future.

For more information on CEMEX, please visit: www.cemex.com

For more information on Breedon, please visit: www.breedongroup.com

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This press release contains forward-looking statements and information that are necessarily subject to risks, uncertainties, and assumptions. Many factors could cause the actual results, performance, or achievements of CEMEX or the transaction herein described to be materially different from those expressed or implied in this release, including not satisfying all closing conditions required to close this divestment. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described herein. CEMEX assumes no obligation to update or correct the information contained in this press release. CEMEX is not responsible for the content of any third-party website or webpage referenced to or accessible through this press release.