As filed with the Securities and Exchange Commission on March 27, 2024. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 20-F ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended: December 31, 2023 Commission file number: 001-38256 NEXA RESOURCES S.A. (Exact name of Registrant as specified in its charter) Grand Duchy of Luxembourg (Jurisdiction of incorporation or organization) José Carlos del Valle Senior Vice President o ...

| --- | --- | --- | --- | --- | --- | --- | --- | --- | |-------|-------|-------|-------|-------|-----------------------------------------|-------|-------|-------| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 4Q23 and 2023 Results February 22, 2024 | | | | | | | | | | | | | | | | | | | | | | | | Important information concerning this presentation This Presentation contains certain forward-looking information and forward-looking statements as ...

Nexa Resources S.A. Consolidated financial statements at December 31, 2023 and report of independent registered public accounting firm C o n t e n t s Consolidated financial statements Consolidated income statement C o n s olid a t e d s t a t e m e n t o f c o m p r e h e n siv e in c o m e C o n s olid a t e d b ala n c e s h e e t C o n s olid a t e d s t a t e m e n t o f c a s h flo w s C o n s olid a t e d s t a t e m e n t o f c h a n g e s in s h a r e h old e r s' e q uit y Notes to the consolidate ...

Financial Data and Key Metrics Changes - Consolidated adjusted EBITDA for the first nine months of 2023 reached $286 million, down by 55% from the same period last year [19] - Total revenue for the third quarter was $649 million, down 8% year-over-year, mainly due to lower Zinc LME prices and smelting sales volumes [36] - Adjusted EBITDA for the third quarter decreased by 32% year-over-year, reaching $82 million, primarily due to lower LME prices [42] - Net debt to adjusted EBITDA ratio increased from 2.8 to 3.06 times quarter-over-quarter, mainly due to lower adjusted EBITDA [20] Business Line Data and Key Metrics Changes - Zinc production increased to 87,000 tons in the third quarter, up 15% year-over-year, attributed to higher volumes from various mines [39] - Smelting segment metal sales totaled 154,000 tons in the third quarter, down 5% from the previous year [59] - Cash cost in the mining segment decreased to $0.35 per pound compared to $0.57 per pound in the third quarter of last year [39] Market Data and Key Metrics Changes - LME Zinc price averaged $2,428 per ton in the third quarter, down by 26% from the same quarter last year [20] - LME Copper price averaged $8,356 per ton, up by 8% year-over-year [20] - The company noted that the declining LME Zinc prices were influenced by speculation regarding the global economy and the performance of the Chinese economy [20] Company Strategy and Development Direction - The company is focused on completing the ramp-up of the Aripuanã mine, with an emphasis on improving recoveries and concentrate quality [64] - Priorities include reducing debt, optimizing costs, and advancing the Cerro Pasco Integration Project [26][64] - The company is assessing options for inorganic growth but prioritizes organic growth opportunities [26] Management's Comments on Operating Environment and Future Outlook - Management acknowledged ongoing challenges due to inflation and high interest rates, impacting metal prices [15] - Despite current challenges, the long-term outlook for Zinc and Copper prices remains positive, driven by demand in construction and infrastructure [63] - Management expressed confidence in the company's ability to generate cash flow and improve financial discipline [78] Other Important Information - The company successfully closed a $320 million sustainability-linked revolving credit facility, effective October 20, 2023 [43] - Cash balance increased, and net debt declined in the third quarter, with total cash sufficient to cover obligations maturing in the next four years [43] Q&A Session Summary Question: What is the interest rate in the new sustainability-linked RCF? - The interest rate is SOFR plus 1.6%, with potential adjustments based on compliance with ESG targets [5] Question: What production should we expect from Aripuanã next year? - Full production is expected by the second quarter of next year, with a running duration of about 2.2 million tons per year [27] Question: Why did costs increase in Cajamarquilla despite lower raw materials? - Costs increased mainly due to energy cost inflation, and management is implementing measures to reduce costs and improve productivity [25] Question: When would you expect Aripuanã to reach breakeven? - Breakeven is anticipated towards the end of the first quarter of next year, influenced by ongoing capital expenditures [76] Question: What can we expect in terms of free cash flow impact in Q4 and 1Q '24 from Aripuanã? - Management indicated that guidance will be provided in January, and cash flow expectations will depend on ramp-up progress [8]

| --- | --- | --- | --- | --- | --- | --- | --- | --- | |-------|-------|-------|-------|-------|-------------------------------|-------|-------|-------| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 3Q23 Results October 31, 2023 | | | | | | | | | | | | | | | | | | | | | | | | Important information concerning this presentation This Presentation contains certain forward-looking information and forward-looking statements as defined in applicabl ...

Nexa Reports Third Quarter 2023 Net Loss of US$63 million and Adjusted EBITDA of US$82 Million Luxembourg, October 30, 2023 – Nexa Resources S.A. ("Nexa Resources", "Nexa", or the "Company") announces today its results for the three and nine-month periods ended September 30, 2023. CEO Message – Ignacio Rosado "In 3Q23, there continued to be downward pressure on metal prices, mainly driven by the persistence of negative external factors, such as inflation in the U.S. leading to still high interest rates and ...

Nexa Resources S.A. (NYSE:NEXA) Q2 2023 Earnings Conference Call July 28, 2023 9:00 AM ET Company Participants Rodrigo Cammarosano - Head of Investor Relations Ignacio Rosado - President and Chief Executive Officer Jose Carlos del Valle - Senior Vice President of Finance and Group Chief Financial Officer Conference Call Participants Operator Good morning and welcome to Nexa Resources Second Quarter 2023 Conference Call. All participants will be in a listen-only mode. [Operator Instructions] This event is be ...

Nexa Reports Second Quarter 2023 Results including Adjusted EBITDA of US$72 Million Luxembourg, July 27, 2023 – Nexa Resources S.A. ("Nexa Resources", "Nexa", or "Company") announces today its results for the three months ended June 30, 2023. CEO Message – Ignacio Rosado "In 2Q23, we experienced an increasingly volatile macroeconomic environment, driven by persistent U.S. inflation in some important sectors, and concerns about the Chinese economy, where relevant indicators such as the property sector and GD ...

Nexa Reports First Quarter 2023 Results including Adjusted EBITDA of US$133 Million Luxembourg, April 27, 2023 – Nexa Resources S.A. ("Nexa Resources", "Nexa", or "Company") announces today its results for the three months ended March 31, 2023. CEO Message – Ignacio Rosado "We started 2023 in the context of a challenging and volatile external environment led by the recent mixed recovery of the Chinese economy, the ongoing Russia-Ukraine war, and the persistent inflationary pressures affecting us all. We gen ...

NEXA ANNOUNCES 2022 YEAR-END MINERAL RESERVES AND MINERAL RESOURCES Luxembourg, March 20, 2023 - Nexa Resources S.A. ("Nexa Resources" or "Nexa" or the "Company") (NYSE Symbol: "NEXA") announces its 2022 Year-End Mineral Reserves and Mineral Resources ("MRMR") relating to its operations and projects located in Peru and Brazil. Commenting on the MRMR update, Ignacio Rosado, CEO of Nexa Resources, said "Our mineral exploration program in 2022 was focused on identifying new ore bodies in our operating mines in ...