Eduardo Saverin is a Brazilian entrepreneur and angel investor, widely recognized as a co-founder of Facebook. He played a pivotal role in the company's early development, making the first seed investment with the majority of his life savings as a 21-year-old college student in 2004. As co-founder, he held the role of chief financial officer and business manager during Facebook's initial phase, contributing to its transformation from a Harvard-only social network to a global social utility.