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, 2026

Commission File Number: 001-35129

Arcos Dorados Holdings Inc.

(Exact name of registrant as specified in its charter)

Río Negro 1338, First Floor

Montevideo, Uruguay, 11100

(Address of principal executive office)

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

ARCOS DORADOS HOLDINGS INC.

TABLE OF CONTENTS

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: August 13, 2026

Item 1

ARCOS DORADOS REPORTS SECOND QUARTER 2026 FINANCIAL RESULTS

Montevideo, Uruguay, August 13, 2026 – Arcos Dorados Holdings Inc. (NYSE: ARCO) (“Arcos Dorados” or the “Company”), Latin America and the Caribbean’s largest restaurant chain and the world’s largest independent McDonald’s franchisee, today reported unaudited results for the three and six months ended June 30, 2026.

Message from Luis Raganato, Chief Executive Officer

Over the last several quarters, we have taken important steps to improve the resilience of the Arcos Dorados business model and monetize our significant market share advantage. Total Revenues, Adjusted EBITDA and Net Income all grew strongly in US dollars, despite challenging consumer dynamics in the second quarter of 2026. In fact, total revenues of $1.3 billion were our highest-ever quarterly revenues, supported by the best guest volume performance of the last six quarters. Adjusted EBITDA, net income and earnings per share all set second quarter records.

Adjusted EBITDA reached $126.8 million, up 15.2% year over year and up more than 20%, excluding gains from a sub-franchisee transaction from last year’s result. Stronger operating performance, better results below the operating line and a lower effective tax rate led to a doubling of earnings per share as well as solid sequential growth in adjusted Free Cash Flow.

The exclusive, global sponsorship of the FIFA World Cup allowed us to execute marketing campaigns and activations in all sales channels. Digital sales penetration and identified sales were the highest ever and we measured market share gains across the region as well. The loyalty program continued to increase guest frequency among its most active members and guests also continued to respond positively to our compelling value platforms throughout the region.

Leading Market Share and unmatched Brand Attributes are a testament to the enduring connection we have with people across Latin America and the Caribbean. Both sets of indicators improved in the second quarter, and we intend to continue monetizing this connection with guests moving forward.

¹ For definitions, please refer to pages 7 and 8 of this document.

AD Holdings Inc. – Consolidated Key Financial Results

Arcos Dorados’ total revenues reached $1.3 billion, up 14.3% in US dollars versus the prior year quarter. The Company’s systemwide comparable sales rose 15.3% in the quarter, driven by guest traffic growth across all three divisions and higher average check in Brazil and SLAD.

Digital channel sales rose by about 25% in the period and represented 66% of the second quarter’s systemwide sales. Performance remained notably strong in Self-order kiosk, Delivery and Loyalty sales versus the prior year. Self-order kiosk sales growth continued to benefit from the increasingly modernized restaurant base and higher customer adoption, while Delivery remained a strong growth driver, with solid year-over-year sales growth supported by increasing penetration across the region.

The Company’s Loyalty Program is available in all main markets and grew to 34.3 million registered members as of the end of the quarter. The growing member base continued to enhance customer engagement, while active redeeming members visited the restaurants roughly five times as frequently as non-members, reinforcing the program's long-term value potential.

Market share expanded and brand attributes strengthened across the region, according to Company research. Guest traffic performance was the strongest of the last six quarters, with the number of transactions up in all three divisions supporting the market share gains.

The exclusive, global sponsorship of the FIFA World Cup allowed the Company to capitalize on the region’s passion for soccer and execute unique marketing campaigns and activations across all its sales channels. Most markets launched tournament-themed sandwiches early in the quarter, generating meaningful incremental sales before the start of the event. Several other local, regional and global campaigns associated with the global FIFA World Cup sponsorship, such as the Panini sticker books and collectible cups, also helped strengthen the connection with guests.

The Company also continued reinforcing its value platforms, maintaining compelling offers for its most price-sensitive guests and other value seekers across key markets.

To appeal to families and young people, the Company ran multi-channel campaigns including brand favorites such as the Grimace shake or compelling licenses such as Super Mario Galaxy and Stranger Things. Finally, within the desserts category, several markets drove innovation and indulgence with new flavors in the McFlurry and Sundae platforms.

Consolidated Adjusted EBITDA margin was 9.7%, up 10 basis points versus the prior year period, or up 70 basis points when excluding the gain from the sub-franchisee restaurant transactions in Mexico from the second quarter of 2025 result. Margin expansion was driven by lower Food & Paper costs and G&A expenses as a percentage of revenues, partially offset by higher Payroll and Occupancy & Other Operating Expenses.

Net income margin attributable to the Company was 3.4%, or 150 basis points higher versus the second quarter of 2025, mainly driven by better results in net interest expense and other financing results and foreign currency exchange results, as well as a lower effective tax rate.

Arcos Dorados recorded earnings of $0.22 per share in the second quarter of 2026 compared to $0.11 per share in the prior year period. Total weighted average shares were 210,663,057 in both periods.

	Notable Items

Included in Adjusted EBITDA: there were no notable items included in the Adjusted EBITDA in the second quarter of 2026. The second quarter of 2025 included a $6.9 million gain in Mexico related to restaurant transactions with a sub-franchisee.

Excluded from Adjusted EBITDA: there were no notable items excluded from the Adjusted EBITDA in either the second quarter of 2026 or the second quarter of 2025.

New Unit Development: Total and by Format1

Figure 2

¹end of period, including company operated and franchised restaurants

Figure 3

*FS: Free-Standing; IS: In-Store; MS: Mall Store; FC: Food Court.

Arcos Dorados opened 16 restaurants in the second quarter of 2026, including 10 freestanding units. As of the end of June 2026, 77% of its systemwide restaurant portfolio offered the most modernized restaurant experience in the Latin American and Caribbean quick service restaurant industry.

Consolidated Debt and Financial Ratios

Figure 4

(In thousands of U.S. dollars, except ratios)

The Company’s net debt to Adjusted EBITDA leverage ratio ended the second quarter of 2026 at 1.1x, compared with 1.2x at year-end 2025.

Adjusted Free Cash Flow

For the last twelve months ended June 30, 2026, the Company generated Adjusted Free Cash Flow of $143.4 million, compared to $16.1 million in the prior comparable period.

Recent Developments

2029 Sustainability-Linked Senior Notes Redemption

On July 16, 2026, the Company completed the redemption of all remaining 2029 Sustainability-Linked Senior Notes at a redemption price equal to 103.063%, plus accrued and unpaid interest.

2025 Social Impact and Sustainable Development Report

In July 2026, Arcos Dorados published its Social Impact and Sustainable Development Report for 2025. The report includes information audited by EY and provides an update on the progress related to initiatives and implementation of the Company’s “Recipe for the Future” ESG Platform. The full report can be downloaded at https://www.arcosdorados.com/en/recipeforthefuture/.

Second Quarter 2026 Earnings Webcast

A webcast to discuss the information contained in this press release will be held today, August 13, 2026, at 10:00 a.m. ET. In order to access the webcast, members of the investment community should follow this link: Arcos Dorados Second Quarter 2026 Earnings Webcast (https://mzgroup.zoom
.us/webinar/register/WN_kWtOZi7PT6qXskp650GT3w#/registration).

A replay of the webcast will be available later today in the investor section of the Company’s website: https://ir.arcosdorados.com/.

Definitions

In addition to financial measures prepared in accordance with generally accepted accounting principles (GAAP), management analyzes business trends using a variety of performance, financial and liquidity measures, which are considered non-GAAP. This press release and the accompanying tables use the following non-GAAP measures: Adjusted EBITDA, Adjusted net cash provided by operating activities, Adjusted Free Cash Flow, Constant Currency basis, Systemwide sales, and Systemwide comparable sales growth.

Adjusted EBITDA: Management uses Adjusted EBITDA to facilitate operating performance comparisons from period to period.

Adjusted EBITDA is defined as the Company’s operating income plus depreciation and amortization plus/minus the following losses/gains: gains from sale or insurance recovery of property and equipment, write-offs of long-lived assets, impairment of long-lived assets, and reorganization and optimization plan expenses.

Management believes Adjusted EBITDA facilitates company-to-company operating performance comparisons by backing out potential differences caused by variations such as capital structures (affecting net interest expense and other financing results), taxation (affecting income tax expense) and the age and book depreciation of facilities and equipment (affecting relative depreciation expense), which may vary for different companies for reasons unrelated to operating performance. Figure 5 of this earnings release includes a reconciliation of Adjusted EBITDA to Net income attributable to Arcos Dorados. For more information, please see the Adjusted EBITDA reconciliation in Note 8 – Segment and geographic information – of our financial statements filed today with the Securities and Exchange Commission (the “SEC”) on Form 6-K.

Adjusted net cash provided by operating activities and Adjusted Free Cash Flow: Management uses Adjusted net cash provided by operating activities and Adjusted Free Cash Flow as supplemental measure to facilitate the analysis of the Company’s cash generation performance and liquidity from period to period.

Adjusted net cash provided by operating activities is defined as net cash provided by (used in) operating activities plus interest paid less interest collected. Adjusted Free Cash Flow is defined as Adjusted net cash provided by operating activities less property and equipment expenditures and purchases of restaurant businesses paid at acquisition date plus proceeds from sales of property and equipment, restaurant businesses and related advances.

Management believes Adjusted net cash provided by operating activities and Adjusted Free Cash Flow provide useful information to investors, when considered together with GAAP measures, in evaluating the Company’s ability to generate cash to fund capital expenditures and financing activities. Management evaluates these measures prior to investing and financing decisions.

Adjusted net cash provided by operating activities and Adjusted Free Cash Flow are non-GAAP financial measures and should not be considered as an alternative to net cash provided by operating activities or any other measure of financial performance or liquidity prepared in accordance with GAAP. These non-GAAP financial measures are not defined in the same manner by all companies and may not be comparable to similarly titled measures used by other companies. A reconciliation of Adjusted Free Cash Flow to net cash provided by operating activities is included in Figure 11 of this earnings release.

Constant Currency basis: refers to amounts calculated using the same exchange rate over the periods under comparison to remove the effects of currency fluctuations from this trend analysis. To better discern underlying business trends, this release uses non-GAAP financial measures that segregate year-over-year growth into two categories:

·

Currency translation reflects the impact on growth of the appreciation or depreciation of the local currencies in which the Company conducts its business against the US dollar (the currency in which the Company’s financial statements are prepared).

Systemwide sales: Systemwide sales represent measures for both Company-operated and sub-franchised restaurants. While sales by sub-franchisees are not recorded as revenues by the Company, management believes the information is important in understanding its financial performance because these sales are the basis on which it calculates and records sub-franchised restaurant revenues and are indicative of the financial health of its sub-franchisee base.

Systemwide comparable sales growth: this non-GAAP measure, refers to the change, on a constant currency basis, in Company-operated and sub-franchised restaurant sales in one period from a comparable period for restaurants that have been open for thirteen months or longer (year-over-year basis) including those temporarily closed. Management believes it is a key performance indicator used within the retail industry and is indicative of the success of the Company’s initiatives as well as local economic, competitive and consumer trends. Sales by sub-franchisees are not recorded as revenues by the Company.

About Arcos Dorados

Arcos Dorados is the world’s largest independent McDonald’s franchisee, operating the largest quick service restaurant chain in Latin America and the Caribbean. It has the exclusive right to own, operate and grant franchises of McDonald’s restaurants in 21 Latin American and Caribbean countries and territories with more than 2,500 restaurants, operated by the Company or by its sub-franchisees, that together employ more than 100 thousand people (as of 06/30/2026). The Company is also committed to the development of the communities in which it operates, to providing young people their first formal job opportunities and to utilize its Recipe for the Future to achieve a positive environmental impact. Arcos Dorados is listed for trading on the New York Stock Exchange (NYSE: ARCO). To learn more about the Company, please visit the Investors section of our website: https://ir.arcosdorados.com/.

Cautionary Statement on Forward-Looking Statements

This press release contains forward-looking statements. The forward-looking statements contained herein include statements about the Company’s business prospects, its ability to attract customers, its expectation for revenue generation and its outlook and guidance for 2026. These statements are subject to the general risks inherent in Arcos Dorados' business. These expectations may or may not be realized. Some of these expectations may be based upon assumptions or judgments that prove to be incorrect. In addition, Arcos Dorados' business and operations involve numerous risks and uncertainties, many of which are beyond the control of Arcos Dorados, which could result in Arcos Dorados' expectations not being realized or otherwise materially affect the financial condition, results of operations and cash flows of Arcos Dorados. Additional information relating to the uncertainties affecting Arcos Dorados' business is contained in its filings with the Securities and Exchange Commission. The forward-looking statements are made only as of the date hereof, and Arcos Dorados does not undertake any obligation to (and expressly disclaims any obligation to) update any forward-looking statements to reflect events or circumstances after the date such statements were made, or to reflect the occurrence of unanticipated events. Certain trademarks and characters referenced herein are the property of their respective owners and are used under license.

Second Quarter 2026 Consolidated Results

Figure 5

(In thousands of U.S. dollars, except per share data)

Second Quarter 2026 Results by Division and Average Exchange Rates per Quarter

Figure 6 

(In thousands of U.S. dollars)

Figure 7

Figure 8

Summarized Consolidated Balance Sheet

Figure 9

(In thousands of U.S. dollars)

Condensed Consolidated Statements of Cash Flows

Figure 10

(In thousands of U.S. dollars)

Adjusted Free Cash Flow

Figure 11

(In thousands of U.S. dollars)