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 July 2024

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.

3

EXHIBIT INDEX

4

Exhibit 1

Cemex reports EBITDA growth and

highest EBITDA margin in eight years

Monterrey, Mexico. July 25, 2024 – Cemex reported strong second quarter results today, with a 2% increase in EBITDA, while EBTIDA margin expanded to the highest level since 2016. EBITDA margin was propelled by favorable price-to-cost dynamics, with prices rising mid-single digits amidst decelerating costs. Net Sales were flat compared to the second quarter of 2023, reflecting difficult weather conditions in key markets offset by pricing momentum.

“Our strong second quarter results demonstrate the efficacy of our commercial approach and growth strategy. Pricing contribution of our products continues to exceed decelerating input cost inflation, while our bolt-on investments, mainly in the US, and our Urbanization Solutions business, continued to support EBITDA growth,” said Fernando A. González, CEO of Cemex. “On Climate Action, we continue to make steady progress in decarbonization with a 3% decline in Scope 1 emissions year-to-date. European operations are leading the way, with emissions today already at European industry 2030 targets and within reach of Cemex’s consolidated 2030 targets, almost six years ahead of time.”

During the quarter, Cemex achieved another important milestone with its second Investment Grade rating from Fitch Ratings. Cemex was also recognized as the top-scoring company in the World Benchmarking Alliance’s 2024 Climate and Energy Benchmark, among 91 of the world’s most influential aluminum, cement, and steel companies, evidence that Cemex’s leadership in sustainability holds up well even beyond the cement industry.

Cemex’s Consolidated 2024 Second Quarter Financial and Operational Highlights

Geographical Markets 2024 Second Quarter Highlights

Note: All percentage variations related to Net Sales and EBITDA are for our continued operations and compared to the same period of last year. All references to EBITDA mean Operating EBITDA.

1

About Cemex

Cemex is a global construction materials company that is building a better future through sustainable products and solutions. Cemex is committed to achieving carbon neutrality through relentless innovation and industry-leading research and development. Cemex is at the forefront of the circular economy in the construction value chain and is pioneering ways to increase the use of waste and residues as alternative raw materials and fuels in its operations with the help of new technologies. Cemex offers cement, ready-mix concrete, aggregates, and urbanization solutions in growing markets around the world, powered by a multinational workforce focused on providing a superior customer experience enabled by digital technologies. For more information, please visit: www.cemex.com

Contact information

Analyst and Investor Relations - New York

Blake Haider

+1 (212) 317-6067

ir@cemex.com

Analyst and Investor Relations - Monterrey

Fabián Orta

+52 (81) 8888-4327

ir@cemex.com

Media Relations

Jorge Pérez

+52 (81) 8259-6666

jorgeluis.perez@cemex.com

###

2

Except as the context otherwise may require, references in this press release to “Cemex,” ”we,” ”us,” ”our,” refer to Cemex, S.A.B. de C.V. and its consolidated subsidiaries. This press release contains forward-looking statements within the meaning of Section 27A of the U.S. Securities Act of 1933, as amended, and Section 21E of the U.S. Securities Exchange Act of 1934, as amended. Cemex intends these forward-looking statements to be covered by the “safe harbor” provisions for forward-looking statements in the U.S. Private Securities Litigation Reform Act of 1995. These forward-looking statements reflect Cemex’s current expectations and projections about future events based on Cemex’s knowledge of present facts and circumstances and assumptions about future events, as well as Cemex’s current plans based on such facts and circumstances, unless otherwise indicated. These statements necessarily involve risks, uncertainties, and assumptions that could cause actual results to differ materially from Cemex’s expectations, including, among others, risks, uncertainties, and assumptions discussed in Cemex’s most recent annual report and detailed from time to time in Cemex’s other filings with the U.S. Securities and Exchange Commission and the Mexican Stock Exchange (Bolsa Mexicana de Valores), which factors are incorporated herein by reference, which if materialized could ultimately lead to Cemex’s expectations and/or expected results not producing the expected benefits and/or results. Forward-looking statements should not be considered guarantees of future performance, nor the results or developments are indicative of results or developments in subsequent periods. These factors may be revised or supplemented, and the information contained in this press release is subject to change without notice, but Cemex is not under, and expressly disclaims, any obligation to update or correct this press release or revise any forward-looking statement contained herein, whether as a result of new information, future events or otherwise, or to reflect the occurrence of anticipated or unanticipated events or circumstances. Any or all of Cemex’s forward-looking statements may turn out to be inaccurate. Accordingly, undue reliance on forward-looking statements should not be placed, as such forward-looking statements speak only as of the dates on which they are made. The content of this press release is for informational purposes only, and you should not construe any such information or other material as legal, tax, investment, financial, or other advice. All references to prices in this press release refer to Cemex’s prices for Cemex products and services. Unless otherwise specified, all references to records are internal records.

This press release and the documents referred to herein include certain non-IFRS financial measures that differ from financial information presented by Cemex in accordance with IFRS in its financial statements and reports containing financial information. The aforementioned non-IFRS financial measures include “Operating EBITDA (operating earnings before other expenses, net plus depreciation and amortization)” and “Operating EBITDA Margin”. The closest IFRS financial measure to Operating EBITDA is “Operating earnings before other expenses, net”, as Operating EBITDA adds depreciation and amortization to the IFRS financial measure. Our Operating EBITDA Margin is calculated by dividing our Operating EBITDA for the period by our revenues as reported in our financial statements. We believe there is no close IFRS financial measure to compare Operating EBITDA Margin. These non-IFRS financial measures are designed to complement and should not be considered superior to financial measures calculated in accordance with IFRS. Although Operating EBITDA and Operating EBITDA Margin are not measures of operating performance, an alternative to cash flows or a measure of financial position under IFRS, Operating EBITDA is the financial measure used by Cemex’s management to review operating performance and profitability, for decision-making purposes and to allocate resources. Moreover, our Operating EBITDA is a measure used by Cemex’s creditors to review our ability to internally fund capital expenditures, service or incur debt and comply with financial covenants under our financing agreements. Furthermore, Cemex’s management regularly reviews our Operating EBITDA Margin by reportable segment and on a consolidated basis as a measure of performance and profitability. These non-IFRS financial measures do not have any standardized meaning and are therefore unlikely to be comparable to similarly titled measures presented by other companies. Non-IFRS financial measures presented in this annual report are being provided for informative purposes only and shall not be construed as investment, financial, or other advice.

There is currently no single globally recognized or accepted, consistent, and comparable set of definitions or standards (legal, regulatory, or otherwise) of, nor widespread cross-market consensus i) as to what constitutes, a ‘green’, ‘social,’ or ‘sustainable’ or having equivalent-labelled activity, product, or asset; or ii) as to what precise attributes are required for a particular activity, product, or asset to be defined as ‘green’, ‘social,’ or ‘sustainable’ or such other equivalent label; or iii) as to climate and sustainable funding and financing activities and their classification and reporting. Therefore, there is little certainty, and no assurance or representation is given that such activities and/or reporting of those activities will meet any present or future expectations or requirements for describing or classifying funding and financing activities as ‘green’, ‘social’, or ‘sustainable’ or attributing similar labels. We expect policies, regulatory requirements, standards, and definitions to be developed and continuously evolve over time.

3

Exhibit 2

CEMEX Second Quarter Results 2024 Panorama High Rise, Miami, United States Stock Listing Information Investor Relations NYSE (ADS) In the United States: Ticker: CX + 1 877 7CX NYSE Mexican Stock Exchange (CPO) In Mexico: Ticker: CEMEX.CPO + 52 (81) 8888 4292 Ratio of CEMEXCPO to CX = 10 E-Mail: ir@cemex.com

Operating and financial highlights

Cement and aggregates volumes in thousands of metric tons. Ready-mix volumes in thousands of cubic meters. In millions of U.S. dollars, except volumes, percentages, employees, and per-ADS amounts. Average ADSs outstanding are presented in millions. Please refer to page 13 for CPO-equivalent units outstanding.

Operating results

Mexico

In millions of U.S. dollars, except percentages.

Our Mexican operations once again delivered exceptional results, with Operating EBITDA reaching record levels, driven by higher prices of our products, strong volumes, and decelerating input cost inflation. Operating EBITDA margin increased 2.1pp year-over-year due to mid-single digit increases in our prices, as well as decelerating costs, particularly in energy.

While bad weather in June disrupted quarterly performance, volume growth remained strong, reflecting the dynamism in both formal and informal construction. Infrastructure and nearshoring, with particular strength in the north and southeast, continued to be the principal growth drivers. Bagged cement volumes grew at a mid-single-digit pace, benefiting from increased social spending and a favorable comparison base.

United States

In millions of U.S. dollars, except percentages.

In the United States, Operating EBITDA declined 2% year-over-year due to lower volumes and higher maintenance costs. Operating EBITDA margin expanded to peak levels, despite weather challenges in much of our portfolio, driven by higher prices of our products and lower cost inflation in the form of fuel and imports.

Cement and ready-mix volumes declined 7% and 12%, respectively, due to continued difficult weather conditions, a softening residential sector, portfolio rationalization, competitive dynamics in certain micro markets and timing of several large projects. Aggregates volumes, typically less impacted by weather conditions, declined low-single digit. We estimate the impact of weather conditions on cement volumes explains ~25% of the volume decline.

Pricing for our core products was up mid to high-single digit year-over-year. Year-to-date, we have implemented cement price increases in ~70% of our portfolio, with increases in all markets except Northern California and Texas. Sequential price increases in these markets were between low to mid-single digits in percentage terms. During July, we implemented mid-single digit cement price increases in much of our Texas market. In aggregates, we have implemented price increases in all markets, with prices growing 6% point-to-point from December to June.

Operating results

Europe, Middle East, and Africa

In millions of U.S. dollars, except percentages.

In EMEA, Operating EBITDA declined 12% driven by a continued challenging demand backdrop in Europe and geopolitical events in the Middle East, although the magnitude of the decline was considerably less than what we experienced in the first quarter.

In Europe, Operating EBITDA declined high-single digits against a tough comparison base, due to continued volume weakness derived from slow growth in western Europe and the current construction ban in Paris ahead of the Olympics. Operating EBITDA margin declined against a difficult record level comparison base last year.

We continue to see a divergence in volume performance between western and eastern Europe, with western European countries such as the UK, Germany and France experiencing large declines, while our eastern European footprint, Czech Republic, Poland and Croatia all continue to grow significantly.

Despite volume headwinds, prices for our products have remained resilient across our European footprint, with flattish year-over-year and sequential performance.

Cemex Europe continues to lead the way in Climate Action with carbon emissions within reach of achieving our 2030 consolidated target, almost 6 years ahead of time. Additionally, Cemex’s Europe carbon footprint today is already significantly below the European cement industry’s comparable 2030 target. Our European operations continue testing record levels of clinker factor with a reduction of 3pp year-to-date to below 70%, using traditional decarbonization levers.

In MEA Operating EBITDA experienced a decline due to ongoing tensions from the conflict in the Middle East and from an important FX impact in Egypt.

Last quarter, we announced the sale of our Philippines operations, and we expect to close the divestiture by year end. As a result, our Philippines business has been re-classified as a discontinued operation and is excluded from our 2024 operating results and the 2023 results included in this report for comparison purposes.

Operating results

South, Central America and the Caribbean

In millions of U.S. dollars, except percentages.

In South, Central America and Caribbean, Sales grew low-single digit driven by positive pricing contribution across the region. Operating EBITDA declined 2% driven by higher maintenance, which more than offset the positive pricing contribution, as well as the lower energy and raw material costs.

Cement volumes were flat, with continued growth in bulk cement supported mainly by the infrastructure sector.

The formal sector drove demand in the region with large infrastructure projects such as highways and metro line projects in Bogota and Panama, the fourth bridge over the Panama Canal and tourism projects in the Dominican Republic.

Operating results

Operating EBITDA and free cash flow

In millions of U.S. dollars, except percentages.

FCF after maintenance capex for the second quarter was US$252 million dollars, down 9% year-over-year, impacted by higher tax payments primarily in Mexico due to better operating results, despite lower maintenance and lower investment in working capital.

Information on debt

In millions of U.S. dollars, except percentages and ratios.

For second quarter 2024, Total debt and Net debt do not include debt of Cemex Holdings Philippines, Inc. (CHP) and its subsidiaries owed to third parties other than the Cemex group, as this debt was reclassified to liabilities held for sale as a result of the agreement to divest our operations in the Philippines, as per IFRS.

Net debt decreased by ~US$240 million dollars sequentially, driven by the reclassification of CHP’s (Cemex Holding’s Philippines, Inc.) third party debt, the free cash flow generated in the quarter and a favorable debt conversion effect from foreign exchange, partially offset by dividends, coupons of subordinated notes, and other cash items.

During the quarter, we achieved another important milestone with receipt of our second Investment Grade rating from Fitch Ratings. Consolidated leverage ratio stood at 2.13 times, about 1/3 of a turn lower than last year, and slightly lower than first quarter. Our capital structure remains strong, with ample liquidity and no material debt maturities until 2026.

Operating results

Consolidated Statement of Operations & Statement of Financial Position

Cemex, S.A.B. de C.V. and Subsidiaries

(Thousands of U.S. dollars, except per ADS amounts)

Operating results

Operating Summary per Country

In thousands of U.S. dollars

Operating results

Operating Summary per Country

Operating EBITDA in thousands of U.S. dollars. Operating EBITDA margin as a percentage of sales.