Condoleezza Rice served on the board of directors of the Charles Schwab Corporation, one of America's largest financial services companies. This directorship was part of her extensive corporate board portfolio that included Chevron, Hewlett-Packard, Transamerica, and later Dropbox and C3.ai. Her presence on multiple corporate boards simultaneously reflects the 'revolving door' pattern common among former senior government officials who leverage their policy expertise and networks for corporate governance roles.