Michael Callahan serves as Chief Administrative Officer at Rivian Automotive Inc. (NASDAQ: RIVN), where he leads the company's legal, government affairs, communications, and facilities teams. Since joining Rivian in 2021 as Chief Legal Officer, Callahan has played a pivotal role in navigating the company's rapid growth, including its landmark 2021 initial public offering that valued Rivian at over $100 billion and its subsequent expansions into new vehicle models and manufacturing facilities. Under his stewardship, Rivian has strengthened its regulatory compliance, managed high-stakes partnerships with entities like Amazon and Volkswagen, and advanced sustainability initiatives aligned with its mission to accelerate the transition to electric adventure vehicles. Prior to Rivian, Callahan spent six years at Uber Technologies, rising to Vice President and Deputy General Counsel. There, he oversaw global litigation, regulatory strategy, and corporate transactions during a period of explosive international expansion and intense scrutiny, successfully resolving multibillion-dollar disputes and shaping policies that supported Uber's evolution into a publicly traded powerhouse. His tenure at Uber honed his expertise in high-growth tech environments, where he managed complex legal challenges across more than 70 countries. Callahan began his career as a partner at the preeminent law firm Williams & Connolly LLP, representing Fortune 500 clients in high-profile litigation and corporate matters over 14 years. A Harvard Law School graduate, he clerked for Justice Antonin Scalia on the U.S. Supreme Court, laying the foundation for his distinguished career in law and business leadership. Callahan's blend of legal acumen, strategic foresight, and operational excellence continues to drive Rivian's position as a leader in the electric vehicle industry.