Sarah Friar is the Chief Financial Officer of OpenAI. Before OpenAI, Sarah served as CEO of Nextdoor from 2018 - 2024, and as CFO of Block from 2012 - 2018. Before her tenure at Block, Sarah served as SVP of Finance & Strategy at Salesforce, she held executive roles at Goldman Sachs and started her career at McKinsey in London and South Africa.

Sarah sits on the board of directors of Walmart and Consensys, and the advisory boards of HOPE Global, the Blavatnik School of Government at the University of Oxford and Stanford's Digital Economy Lab. She previously served as a director of Nextdoor, Slack and New Relic. She is the co-founder of Ladies Who Launch, a nonprofit that celebrates and empowers women entrepreneurs.

Sarah graduated from the University of Oxford with a Masters of Engineering in Metallurgy, Economics, and Management and Stanford Graduate School of Business with an MBA.