San Francisco CA. Buy Now Pay Later (BNPL) fintech. Founded by Max Levchin (PayPal CTO) + others. NASDAQ: AFRM. $2.6B+ revenue FY2025. One of largest BNPL platforms globally.

Spend management and corporate cards for startups. San Francisco CA. Y Combinator + Ribbit + DST. Raised $200M 2024. Shifted focus from SMB to enterprise.

Equity management platform for startups and investors. San Francisco CA. a16z + Spark Capital. $7.4B valuation. Used by 40,000+ companies to manage cap tables.

San Jose CA. Originally Confinity (Peter Thiel + Max Levchin, 1998) merged with X.com (Elon Musk, 1999). Renamed PayPal. Acquired by eBay $1.5B 2002. IPO 2015 (spun off from eBay). Flagship product: online payments. Origin company of the PayPal Mafia — 20+ subsequent billion-dollar companies founded by alumni. Stanford and UIUC heavily represented in founding team.

San Francisco CA (now Block Inc). Mobile payments and point-of-sale hardware. Founded 2009 by Jack Dorsey and Jim McKelvey. Keith Rabois (PayPal) was COO 2010-2013. NYSE: SQ (rebranded Block Inc 2021). $22B+ revenue.