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 October 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 shows exceptional growth in Net Income,

while making inroads on portfolio rebalancing

Monterrey, Mexico. October 28, 2024 — Cemex reported third-quarter results today, achieving an EBITDA of US$747 million and Net Sales of US$4.09 billion in a period impacted by adverse weather conditions in all its markets and significant FX movements. Weather impact accounted for a little less than half of the like-to-like EBITDA shortfall in the quarter. Consolidated Net Income grew more than 200% compared to the prior year. Cemex’s pricing strategy continued to be supportive in a lower volume environment, with prices for its products rising low-single digits. During the quarter, Cemex announced divestments of $1.4 billion, bringing year-to-day announced divestitures of non-core assets to $2.2 billion.

“I am pleased with the significant progress we have made this year with our portfolio optimization efforts. With the proceeds, we will continue to execute on our capital allocation framework where we intend to prioritize growth investments with particular focus on the US, while continuing to deleverage and build on our recently instituted progressive shareholder return program” said Fernando A. González, CEO of Cemex. “Our growth strategy adopted since 2019 has proven to be a great complement to organic growth, and together, both levers have delivered a compounded annual growth rate of 14% for the company. With the proceeds from recent divestitures, we will continue to execute our small bolt on investment strategy while accelerating growth through small to midsize M&A transactions to serve our existing geographic footprint”.

In Climate Action, the company is progressing against its Future in Action roadmap, reducing year-to-date scope 1 and 2 CO₂ emissions by 3% and 4%, respectively, through its “Reduce before Capture” approach. Additionally, with the aim to drive decarbonization from 2030 and beyond, Cemex is focused on developing innovative breakthrough climate technology. In this regard, a Cemex led consortium was recently selected to receive €157 million of EU Innovation funding for a carbon capture project at its Rüdersdorf cement plant in Germany, with the objective to capture 1.3 million tons of CO₂ per year.

Cemex’s Consolidated 2024 Third Quarter Financial and Operational Highlights

Geographic Markets 2024 Third Quarter Highlights

1

Note: All percentage variations related to Sales and EBITDA are on a like-to-like basis for the ongoing operations and for foreign exchange fluctuations compared to the same period of last year. All references to EBITDA mean Operating EBITDA.

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: https://www.cemex.com/

Contact information

Analyst and Investor Relations - New York

Blake Haider

+1 (212) 317-6011

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 the reports, presentations, and documents to be disclosed during Cemex’s third quarter 2024 results conference call and audio webcast presentation 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

Third Quarter Results 2024 Mission Rock, San Francisco, United States Built with Vertua Concrete, part of our Vertua family of products with sustainable attributes Photo credit: Mission Rock Partner Stock Listing Information NYSE (ADS) Ticker: CX Mexican Stock Exchange (CPO) Ticker: CEMEX.CPO Ratio of CEMEXCPO to CX = 10:1

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.

Volumes in Mexico slowed as construction activity decelerated after the election in June, coupled with bad weather, where precipitation levels were 50% higher than third quarter of 2023. Operating EBITDA declined 8% year-over-year on a like-to-like basis due to lower volumes, higher electricity and maintenance costs, and a prior year base effect in which Operating EBITDA rose more than 30%. We estimate the impact from bad weather on Operating EBITDA to be ~US$8 million. Operating EBITDA margin decreased 1.2pp year-over-year due primarily to a 30% transitory rise in electricity costs, which we expect to stabilize in 2025 assuming several of our cement plants complete their migration to more competitive power supply sources.

Cement and ready-mix prices rose mid-single digits. We continue to see healthy growth in our ready-mix orderbook for projects related to nearshoring and infrastructure, and over the medium term, we are optimistic about Mexico’s growth prospects, as the new government’s agenda appears supportive of housing and infrastructure.

United States

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

In the United States, Operating EBITDA declined 4% year-over-year due to lower cement and ready-mix volumes, which were impacted by extreme weather conditions, with three major hurricanes and above average precipitation and flooding. Several of our key markets experienced 50% to 200% higher precipitation than the prior year. We estimate the impact of adverse weather on Operating EBITDA to be US$17 million, which explains all the Operating EBITDA variation. The resiliency of the business to the drop in volumes was impressive, with Operating EBITDA margin remaining stable, driven by higher prices, lower imports, energy costs deceleration and our operational optimization efforts.

Cement and ready-mix volumes declined 6% and 11%, respectively, due to continued difficult weather conditions. Aggregates volumes, typically less impacted by weather conditions, declined low-single digit. Our aggregates operations are now the largest contributor to US profitability, accounting for 36% of year-to-date Operating EBITDA with margins in excess of 30%. Pricing for our three core products rose low-single digits. During the quarter, we formed a joint venture with Couch Aggregates to strengthen and expand our aggregates reserves in the Southeast.

Operating results

We anticipate improved conditions in 2025, supported by underlying demand for infrastructure, improved activity in housing, and stabilization of the commercial sector.

Europe, Middle East, and Africa

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

In EMEA, Operating EBITDA was stable year-over-year after 3 consecutive quarterly declines.

We believe we are experiencing an important inflection point in our European business with Operating EBITDA growth on a reported basis, and where for the first time in 9 quarters, we have seen volume growth. The improvement in volumes is largely attributable to better economic activity, lower interest rates, the lifting of the construction ban related to the Paris Olympics and an easier prior year comparison.

Prices for our three core products were stable across our European footprint, while most of our costs continued to decelerate, particularly in energy for cement production.

On Climate Action, Cemex Europe continues to test company record levels of decarbonization with a 5% reduction year-to-date in CO₂ per ton of cement, supported by a clinker factor reduction of 1.7pp.

In MEA, Operating EBITDA increased due to better pricing dynamics in Egypt and improved construction activity in Israel.

Operating results

South, Central America and the Caribbean

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

In South, Central America and Caribbean, Operating EBITDA and Operating EBITDA margin declined 27% and 5pp, respectively, driven by lower volumes and higher maintenance. Our operations experienced a challenging quarter in terms of volumes, impacted by two hurricanes, as well as a transportation strike in Colombia. These events impacted Operating EBITDA by an estimated US$7 million.

Despite the current demand environment, prices for our products rose between 3% and 10%.

The formal sector continues driving demand with large infrastructure projects such as the Bogotá Metro, in which Cemex was awarded ~80% of total volumes, and the fourth bridge over the Canal in Panama.

During the quarter, we announced the sale of our Dominican Republic and Guatemala operations, and we expect to close the Dominican Republic transaction by year end, while the Guatemala transaction has already closed in September. As a result, these two businesses have been re-classified as discontinued operations and are excluded from our 2024 operating results and the 2023 results included in this report for comparison purposes.

Operating results

Operating EBITDA and free cash flow

FCF after maintenance capex for the third quarter was US$114 million, impacted by a US$306 million payment towards the US$500 Spanish tax fine announced in fourth quarter of 2023. Adjusting for this extraordinary tax payment, FCF after maintenance capex would have been slightly lower than the prior year. Cemex is analyzing options with respect to the remaining balance of the Spanish tax fine.

Due to the seasonality of our working capital cycle and the implementation of certain initiatives, we are expecting a significant turnaround of working capital in the fourth quarter.

During the quarter, the main uses of cash below the Free Cash Flow line relate to the payment of coupons of our subordinated notes with no fixed maturity, the investment in Couch Aggregates in the US, and dividend payments.

Information on debt

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

Net debt decreased by ~US$38 million dollars sequentially, driven by the proceeds from the sale of our Guatemala operations, partially offset by the uses of cash below the Free cash flow line explained above.

Our leverage ratio stood at 2.22 times, about a tenth of a turn higher than second quarter driven primarily by lower Operating EBITDA and the payment related to the Spanish tax fine.

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.