辛达 SIND

Douglas Groh has served as a member of our Board of Directors since November 2024. Mr. Groh served as a precious metals equity portfolio manager at Sprott Asset Management (Sprott) from 2020 to 2024, and prior to Sprott's acquisition of the Tocqueville Gold Fund, as a fund manager at Tocqueville Asset Management since 2003. Prior to that, Mr. Groh was director of investment research at Grove Capital from 2001 to 2003 and from 1990 to 2001 held investment research and banking positions at J.P. Morgan, Merrill Lynch and ING Bank. Mr. Groh began his career as a mining and precious metals analyst in 1985 at U.S. Global Investors. Mr. Groh currently serves on the board of directors of Sunshine Silver Mining & Refining Company. Mr. Groh holds a master's degree from The University of Texas at Austin in Mineral Economics and a bachelor's degree from the University of Wisconsin - Madison in Geology. Mr. Groh was selected to serve on our Board of Directors because of his experience in mining finance, portfolio management, investment banking, and buy-side and sell-side credit and equity analysis.

Luis Barreto has served as our Chief Financial Officer since January 2026. Mr. Barreto is a senior finance and investment executive with more than 25 years of experience in infrastructure, transportation and energy, with extensive global transaction, capital markets and asset management expertise. Since 2022, Mr. Barreto served as co-founder and president of MegaFlux Inc., a manufacturer of electric powertrains for commercial vehicles and buses and a provider of fleet electrification solutions focused on Mexico and the United States. Previously, Mr. Barreto spent over a decade at Brookfield Asset Management's Infrastructure Group, serving in senior leadership roles including Managing Director within the North America and Latin America teams and as global deputy chief investment officer for transportation. Earlier in his career, Mr. Barreto held investment banking roles at Citigroup in New York and London. Mr. Barreto holds a master's degree in business administration from Columbia Business School and a bachelor's degree in business administration from Florida International University.

Anna El-Erian has served as a member of our Board of Directors since May 2026. Ms. El-Erian currently serves as the chair of the board of directors of Gabriel Resources Ltd. and is a member of the board of Sunshine Silver Mining & Refining Company. Ms. El-Erian has been a member of the board of directors of Gabriel Resources Ltd. since January 2021 and a member of the board of directors of Altius Minerals Corp. since May 2015. She previously served as a member of the board of directors of Altius Renewable Royalties Corp. from December 2020 to December 2024, Sabina Gold & Silver Corp. from March 2016 to April 2023 and Entree Resources from June 2015 to June 2022 and chair of the board of directors of Eco Oro Minerals Corp. from June 2011 to January 2021. Previously, Ms. El-Erian was a director and chief executive officer of Surgical Spaces Inc. from 2005 to 2011. She began her career in corporate law with Webber Wentzel Attorneys in 1990 before joining Investec Merchant Bank Limited in 1992. Ms. El-Erian holds a bachelor of laws from the University of the Witwatersrand in Johannesburg, South Africa. Ms. El-Erian was selected to serve on our Board of Directors because of her extensive experience in capital markets and securities as an investment banker, with a specialty in mergers and acquisitions.

Fabian Galindo has served as our Country Manager since May 2024 after joining the Company as chief financial officer in April 2023. Mr. Galindo has more than 17 years of experience in the mining and natural resources sector, with a background spanning operations, strategic planning, finance and mergers and acquisitions. Prior to joining the Company, Mr. Galindo held senior leadership roles at Grupo Mexico, including overseeing its U.S. copper mining, smelting and refining operations in Arizona and Texas from 2018 to 2023. In that role, he worked closely with executive leadership on operational performance, organizational restructuring, capital allocation and strategic initiatives across multiple large-scale assets. Earlier in his career at Grupo Mexico, Mr. Galindo served in progressively senior roles within the strategic planning and mergers and acquisitions functions for Americas Mining (the mining division of Grupo Mexico), where he was involved in the evaluation, valuation and due diligence of mining projects and acquisitions in North America, Latin America and Europe, as well as corporate finance, treasury and commodity risk management activities. Since joining the Company in 2023, Mr. Galindo has led our Mexican operations, supported strategic planning and financing initiatives and worked closely with our Board of Directors in preparing for this offering. Mr. Galindo holds a bachelor's degree in finance and accounting from Universidad Anahuac del Norte and an executive master's degree in business administration from The University of Texas at Austin and Tecnologico de Monterrey.

Ms. Carla Llantada, 30+ years of experience leading governance, institutional relations, stakeholder engagement, and legal strategy across the public and private sectors. Carla's experience spans across trade and industrial policy, renewable energy development, institutional justice reform, and government affairs.

Igor Gonzales has served as a member of our Board of Directors since April 2026. Mr. Gonzales has served as Technical COO of Appian Capital Advisory since 2020, working alongside portfolio company management teams to ensure their businesses reach their full potential. Mr. Gonzales heads the Technical Team and operations, helps develop and implement robust plans for the life of mine, expansions, operational improvement, exploration, and growth, as well as health and safety practices. He also coordinates and participates in due diligence ahead of acquisitions by Appian and facilitates technical knowledge sharing across the firm. Prior to joining Appian, Mr. Gonzales was President and CEO of Sierra Metals Inc. from 2017 to 2020, managing operations in Mexico and Peru, and before that he was COO at Compania de Minas Buenaventura from 2014 to 2017. Mr. Gonzales spent 16 years with Barrick Gold Corporation, most recently as COO global, where he oversaw operations globally, and served in various roles with the Southern Peru Copper Corporation for 18 years. He holds a Bachelor of Science in Chemical Engineering from the University of San Antonio Abad in Peru and a Master of Science in Extractive Metallurgy from New Mexico Institute of Mining and Technology in the United States. Mr. Gonzales was selected for this role because of his over 40 years of mining industry experience, his extensive experience in base and precious metals as well as polymetallic operations both underground and open pit, and his track record of leading operations globally with several preeminent companies, with a particular focus on North and South America.

Vanessa Rubio Marquez has served as a member of our Board of Directors since April 2026. Ms. Rubio Marquez has served as Associate Dean of the School of Public Policy and Postgraduate Professor at the London School of Economics and Political Science (LSE), since January 2021 and as an Associate Fellow of the Royal Academy of International Affairs of the United Kingdom (Chatham House), since July 2021. In addition, Ms. Rubio Marquez serves on the Advisory Council and management committees of the Freedom and Prosperity Center of The Atlantic Council, The Marshall Institute (LSE), and the LSE-Bloomberg European City Leadership Initiative since September 2022, March 2024 and January 2025, respectively. Prior to her current roles, Ms. Rubio Marquez served as a Senator of the Republic of Mexico from September 2018 to July 2020. Over the course of her career in Mexico's public service, she served as Deputy Minister on three occasions: she held the position of Undersecretary of Finance and Public Credit at the Ministry of Finance and Public Credit from September 2016 to January 2018; Deputy Minister of Social Development from September 2015 to September 2016; and Deputy Minister of Foreign Affairs from December 2012 to September 2015. Ms. Rubio Marquez holds a Master of Science degree in International Relations from The London School of Economics. Ms. Rubio Marquez was selected to serve on the Board of Directors based on her extensive experience in public finance and economic policy, her deep expertise in international financial institutions and multilateral affairs, and her academic leadership in public policy, all of which provide the Board with valuable perspectives on regulatory, geopolitical, and macroeconomic matters.

Kalidas Madhavpeddi has served as a member of our Board of Directors since April 2026. Mr. Madhavpeddi currently serves as Chair of Glencore plc and is a director of NovaGold Resources Inc. He is currently the President of Azteca Consulting LLC, an advisory firm to the metals and mining sector since 2006. From 2010 to 2018 he was CEO of China Molybdenum International, a privately held company and global producer of copper, gold, cobalt, phosphates, niobium and molybdenum. His extensive career in the mining industry includes over 25 years at Phelps Dodge Corporation (Phelps Dodge), a Fortune 500 company, starting as a Systems Engineer and ultimately becoming Senior Vice President for Phelps Dodge, and contemporaneously the President of Phelps Dodge Wire & Cable. Mr. Madhavpeddi is an alumnus of the Indian Institute of Technology, Madras, India, the University of Iowa, and the Harvard Business School. Mr. Madhavpeddi was selected to serve on our Board of Directors because of his 40 years of international experience in corporate strategy, mergers and acquisitions, government relations, marketing, mining engineering and capital.

Daniel Muniz Quintanilla has served as a member of our Board of Directors since June 2021 and as our Executive Chairman since April 2022. He previously served as our Vice Chairman from June 2021 to April 2022. Mr. Muniz serves as a member of the board of directors of First Majestic Silver Corp., NOVAGOLD Resources Inc. and Brookfield Infrastructure Partners L.P. Mr. Muniz is also a founding partner of Axkan Capital Partners S.L., and serves as a director of Sunshine Silver Mining & Refining Company. Mr. Muniz served as the managing director and executive vice chair of Americas Mining (the mining division of Grupo Mexico) from 2014 to 2018, as chief executive officer of Industrial Minera Mexico (the underground mining division of Grupo Mexico) from 2010 to 2014, and as chief financial officer of Grupo Mexico from 2007 to 2014. Mr. Muniz served as a director of Tharsis Mining S.L. from June 2022 until November 2025, as a director of Gatos Silver from April 2021 until it was acquired by First Majestic Silver Corp. in January 2025, and as a director of Hudbay Minerals Inc. from July 2019 until May 2024. He holds a law degree from Universidad Iberoamericana, in Mexico City, a master's degree in law from Georgetown University in Washington, D.C. and a master's degree in business administration from Instituto de Empresa in Madrid, Spain.

Graeme Cameron Maxwell Lamb has served as a member of our Board of Directors since June 2021. Mr. Lamb previously served as a British Army officer from 1971 to 2009, commanding Conventional, Airborne and Special Forces units at every rank, including serving as a former director of UK Special Forces from 2001 to 2003 and as Commander of the British Field Army from 2007 to 2009, and was formally recognized seven times for operational service by Her Majesty Queen Elizabeth II. Mr. Lamb previously served on the board of directors of MKS PAMP Group, Concord Resources Holdings Limited and Silversurfers. Mr. Lamb was selected to serve on our Board of Directors because of his geopolitical perspectives and extensive experience in international security and strategic leadership.