‹ Y Combinator

Who is behind Y Combinator?

Also known as YC

Shows documented founders, leaders, board members, funders and owners.

Not who made decisions, or why.

5 links · Mar 2005 –

Play Explore

A connection is not evidence of wrongdoing.

Over time
  1. Led by Sam Altman (president) 2014–2019

On the record

Sourced links that no one presents as their own account, as recorded so far. Others may exist.

Founded by

Led by

  • Sam Altman head of 2014–2019 president Primary record 45

    Paul Graham announced the choice on 21 February 2014; he wrote that he and Jessica Livingston thought Altman best suited to grow YC, and that he had started trying to recruit him in 2012.

Proof 5 sources
  1. How Y Combinator Started, Paul Graham, Mar 2012. Primary record
    I agreed to put $100k into the new fund and Jessica agreed to quit her job to work for it. Over the next couple days I recruited Robert and Trevor, who put in another $50k each. So YC started with $200k.
  2. People (Y Combinator), Y Combinator. Primary record
    Jessica Livingston Founder, Retired
    Robert Morris Founder, Retired
    Trevor Blackwell Founder, Retired
  3. Summer Founders Program, Paul Graham, Mar 2005. Primary record
    Some friends and I have started Y Combinator, a new venture firm that specializes in funding very early stage startups.
  4. Sam Altman for President, Y Combinator, 21 Feb 2014. Primary record
    I’m delighted to announce that Sam Altman has agreed to become president of Y Combinator starting next batch.
  5. Sam Altman, Encyclopaedia Britannica, 24 Dec 2024. Scholarship & press Archived copy
    Sam Altman (born April 22, 1985, Chicago, Illinois, U.S.) is an American entrepreneur who was president of the start-up accelerator Y Combinator from 2014 to 2019 and chief executive officer (CEO) of the artificial intelligence (AI) company OpenAI beginning in 2019.
How this answer is built

Lines on the record come first: sourced links that no one presents as their own account, each with its strongest source. Then every account recorded here gets its own column, A to Z, none ranked above another. A column quotes only that account's own words and shows the strength of its own sources. Disputed lines are listed apart, with the reason, and lines still being verified come last. Neither is counted. Withdrawn lines are never shown.

When a list is longer than the page shows, the links the public methodology ranks strongest stay (methodology 0.3), and the rest open in the explorer.

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