About this map
Four people started an accelerator in 2005. Twenty years on, a third of its partners are founders it funded. This map is marked real.
41 people, 59 relationships, 1964 to 2024.
average 2.7 connections each, 7% of the possible ties drawn, 7 communities, 2 separate groups.
People in Y Combinator
- Trevor Blackwell, YC co-founder, roboticist, from 1969
- Robert Tappan Morris, YC co-founder, MIT professor, from 1965
- Paul Graham, YC co-founder, president 2005 to 2014, from 1964
- Jessica Livingston, YC co-founder, from 1971
- Sam Altman, President 2014 to 2019, then OpenAI, from 1985
- Geoff Ralston, President 2019 to 2023
- Garry Tan, President and CEO since 2023. Founded Posterous, from 1981
- Carolynn Levy, Managing director for legal. Wrote the SAFE
- Kirsty Nathoo, Chief financial officer
- Paul Buchheit, Built Gmail, then a YC partner, from 1977
- Michael Seibel, Justin.tv founder, managing director to 2024, from 1982
- Jared Friedman, Scribd founder, managing director from 2024
- Diana Hu, Escher Reality founder, managing partner
- Harj Taggar, Auctomatic and Triplebyte founder, partner
- Tom Blomfield, Founded GoCardless and Monzo, from 1985
- Gustaf Alströmer, Ran growth at Airbnb
- Nicolas Dessaigne, Founded Algolia
- Pete Koomen, Founded Optimizely
- Andrew Miklas, Founded PagerDuty
- David Lieb, Founded Bump, sold to Google
- Tyler Bosmeny, Founded Clever
- Steve Huffman, Reddit, the first batch, from 1983
- Alexis Ohanian, Reddit, the first batch, from 1983
- Drew Houston, Dropbox, S07, from 1983
- Arash Ferdowsi, Dropbox, S07, from 1985
- Justin Kan, Justin.tv, S07, from 1983
- Emmett Shear, Justin.tv, then Twitch CEO, from 1983
- Kyle Vogt, Justin.tv, then founded Cruise, from 1982
- Patrick Collison, Auctomatic W07, then Stripe, from 1988
- John Collison, Auctomatic W07, then Stripe, from 1990
- Brian Chesky, Airbnb, W09, from 1981
- Joe Gebbia, Airbnb, W09, from 1981
- Nathan Blecharczyk, Airbnb, W09, from 1983
- Brian Armstrong, Coinbase, S12, from 1983
- Fred Ehrsam, Coinbase, S12, from 1988
- Tony Xu, DoorDash, S13, from 1985
- Peter Thiel, Backed Stripe out of the PayPal Mafia, from 1967
- Aaron Swartz, Infogami, merged into Reddit, 1986 to 2013
- Stanley Tang, DoorDash, S13, from 1992
- Andy Fang, DoorDash, S13
- Evan Moore, DoorDash, S13
Relationships in Y Combinator
- Paul Graham and Jessica Livingston: co-founded YC with (business, confirmed, from 2005) source
- Paul Graham and Robert Tappan Morris: co-founded YC with (business, confirmed, from 2005) source
- Paul Graham and Trevor Blackwell: co-founded YC with (business, confirmed, from 2005) source
- Jessica Livingston and Robert Tappan Morris: co-founded YC with (business, confirmed, from 2005) source
- Jessica Livingston and Trevor Blackwell: co-founded YC with (business, confirmed, from 2005) source
- Robert Tappan Morris and Trevor Blackwell: co-founded YC with (business, confirmed, from 2005) source
- Paul Graham and Jessica Livingston: married to (family, confirmed, from 2008) source
- Paul Graham and Robert Tappan Morris: co-founded Viaweb with (business, confirmed, 1995 to 1998) source
- Paul Graham and Trevor Blackwell: co-founded Viaweb with (business, confirmed, 1995 to 1998) source
- Robert Tappan Morris and Trevor Blackwell: Viaweb together (business, confirmed, 1995 to 1998) source
- Paul Graham -> Sam Altman: handed him the presidency (business, confirmed, 2014) source
- Sam Altman -> Geoff Ralston: succeeded by (business, confirmed, 2019) source
- Geoff Ralston -> Garry Tan: succeeded by (business, confirmed, 2023) source
- Paul Graham -> Michael Seibel: brought him in as a part time partner (business, confirmed, 2013) source
- Sam Altman -> Michael Seibel: partner under him (business, confirmed, 2014 to 2019) source
- Michael Seibel -> Jared Friedman: handed over as managing director (business, confirmed, 2024) source
- Garry Tan -> Diana Hu: managing partner under him (business, confirmed, from 2023) source
- Garry Tan -> Harj Taggar: managing partner under him (business, confirmed, from 2023) source
- Paul Graham -> Paul Buchheit: partner (business, confirmed, from 2010) source
- Paul Graham -> Kirsty Nathoo: chief financial officer (business, confirmed, from 2010) source
- Paul Graham -> Carolynn Levy: wrote YC's legal paperwork (business, confirmed, from 2013) source
- Garry Tan -> Tom Blomfield: general partner under him (business, confirmed, from 2023) source
- Garry Tan -> Gustaf Alströmer: general partner under him (business, confirmed, from 2023) source
- Garry Tan -> Nicolas Dessaigne: general partner under him (business, confirmed, from 2023) source
- Garry Tan -> Pete Koomen: general partner under him (business, confirmed, from 2023) source
- Garry Tan -> Andrew Miklas: general partner under him (business, confirmed, from 2023) source
- Garry Tan -> David Lieb: general partner under him (business, confirmed, from 2023) source
- Garry Tan -> Tyler Bosmeny: general partner under him (business, confirmed, from 2023) source
- Steve Huffman and Alexis Ohanian: co-founded Reddit with (business, confirmed, from 2005) source
- Paul Graham -> Steve Huffman: funded them in the very first batch (business, confirmed, 2005) source
- Paul Graham -> Alexis Ohanian: funded them in the very first batch (business, confirmed, 2005) source
- Aaron Swartz -> Steve Huffman: merged Infogami into Reddit (business, confirmed, 2006) source
- Aaron Swartz -> Alexis Ohanian: merged Infogami into Reddit (business, confirmed, 2006) source
- Paul Graham -> Garry Tan: funded Posterous, S08 (business, confirmed, 2008) source
- Drew Houston and Arash Ferdowsi: co-founded Dropbox with (business, confirmed, from 2007) source
- Paul Graham -> Drew Houston: funded Dropbox, S07 (business, confirmed, 2007) source
- Justin Kan and Emmett Shear: co-founded Justin.tv with (business, confirmed, from 2007) source
- Justin Kan and Michael Seibel: co-founded Justin.tv with (business, confirmed, from 2007) source
- Justin Kan and Kyle Vogt: co-founded Justin.tv with (business, confirmed, from 2007) source
- Emmett Shear and Michael Seibel: Justin.tv together (business, confirmed, from 2007) source
- Emmett Shear and Kyle Vogt: Justin.tv together (business, confirmed, from 2007) source
- Michael Seibel and Kyle Vogt: Justin.tv together (business, confirmed, from 2007) source
- Drew Houston and Justin Kan: batchmates in S07 (social, confirmed, 2007) source
- Arash Ferdowsi and Emmett Shear: batchmates in S07 (social, confirmed, 2007) source
- Patrick Collison and John Collison: co-founded Stripe with (business, confirmed, from 2009) source
- Harj Taggar and Patrick Collison: co-founded Auctomatic with, W07 (business, confirmed, 2007 to 2008) source
- Harj Taggar and John Collison: co-founded Auctomatic with, W07 (business, confirmed, 2007 to 2008) source
- Peter Thiel -> Patrick Collison: backed Stripe early (business, confirmed, from 2010) source
- Brian Chesky and Joe Gebbia: co-founded Airbnb with (business, confirmed, from 2008) source
- Brian Chesky and Nathan Blecharczyk: co-founded Airbnb with (business, confirmed, from 2008) source
- Joe Gebbia and Nathan Blecharczyk: co-founded Airbnb with (business, confirmed, from 2008) source
- Paul Graham -> Brian Chesky: funded Airbnb, W09 (business, confirmed, 2009) source
- Gustaf Alströmer -> Brian Chesky: ran growth for him (business, confirmed, 2012 to 2017) source
- Brian Armstrong and Fred Ehrsam: co-founded Coinbase with (business, confirmed, from 2012) source
- Fred Ehrsam -> Steve Huffman: the two met through Reddit (social, reported, 2012) source
- Tony Xu and Stanley Tang: co-founded DoorDash with (business, confirmed, from 2013) source
- Tony Xu and Andy Fang: co-founded DoorDash with (business, confirmed, from 2013) source
- Tony Xu and Evan Moore: co-founded DoorDash with (business, confirmed, from 2013) source
- Stanley Tang and Andy Fang: co-founded DoorDash with (business, confirmed, from 2013) source