Reid Hoffman

Reid Hoffman co-founded LinkedIn (sold to Microsoft for $26 billion in 2016) and is a partner at venture firm Greylock, with a long record of early investments across major technology companies. His net worth was estimated around $2.5 billion in 2025.

Hoffman played a key role in technology and AI, sitting on the boards of Microsoft and (formerly) OpenAI, where he helped broker the Microsoft-OpenAI partnership, and co-founding AI startup Inflection AI. His influence spans the venture, social-media, and AI ecosystems.

He is among the most visible Democratic megadonors, contributing tens of millions of dollars to candidates and causes, making him a counterweight to right-leaning tech billionaires and a significant force in political financing.

What they control

• Venture investments via Greylock and personal vehicles
• A founding legacy at LinkedIn (now part of Microsoft)
• Board and investment ties across AI (OpenAI, Inflection, Microsoft)
• Large-scale Democratic political donations

Key institutions & holdings

Key facts

• Net worth ~$2.5 billion (2025).
• Co-founded LinkedIn; sold to Microsoft for $26 billion in 2016.
• Partner at Greylock; early investor in many tech firms.
• Helped broker the Microsoft-OpenAI partnership; co-founded Inflection AI.
• Among the top Democratic megadonors, giving tens of millions per cycle.

Timeline

1. 2002Co-founds LinkedIn.
2. 2016Microsoft acquires LinkedIn for $26 billion.
3. 2022-2024Co-founds Inflection AI; serves on the OpenAI board.
4. 2024Ranks among the nation's top political donors.

Controversies

Network

• Sam AltmanOpenAI associateHoffman backed OpenAI and its Microsoft partnership.
• Peter ThielPayPal-era peerIdeological counterpart on the political left.