Find your path to Kieran
356 people in our graph share verified history with Kieran — schools, employers, funds. One of them is your warm intro.
About
Kieran O'Neill is a founder who has built and exited three companies. At 15 he created a video sharing site that reached 10 million monthly active users before exiting to a NASDAQ-listed company at 19, later left university to start a gaming social app that also exited, and co-founded Thread, an AI fashion stylist that took part in Y Combinator S12, raised $40 million from investors including Balderton and Demis Hassabis, grew to 3 million customers, and was acquired by Marks & Spencer. He has been named in the Financial Times Top 10 Under 30, Drapers 30 Under 30, and Forbes 30 Under 30.
Founder/CEO at ThreadYC S12
Intro paths
Kieran went through Y Combinator (Summer 2012) — any YC alum in your network can reach them through the YC community.
In turn, Kieran can intro founders to Thread's investors below.
Thread's investors · 4
Co-founders at Thread

Experience
- [building]CEO & Co-Foundercurrent2026 — present
- Marks and SpencerSenior Head of Product, Personalisation / Consumer AI2022 — 2026
- ThreadCEO & Co-Founder (Acquired by M&S)2012 — 2022
- PlayfireCEO & Co-Founder (Acquired)2007 — 2012
- PSUCo-Founder (Acquired)2003 — 2010
- Holy LemonFounder (Acquired)2003 — 2007
Skills & more
+3 more
Video GamesBusiness DevelopmentProduct ManagementLanguages Spanish
From Kieran's professional profile.
Frequently asked questions
- Who is Kieran O'Neill?
- Kieran O'Neill is a founder who has built and exited three companies. At 15 he created a video sharing site that reached 10 million monthly active users before exiting to a NASDAQ-listed company at 19, later left university to start a gaming social app that also exited, and co-founded Thread, an AI fashion stylist that took part in Y Combinator S12, raised $40 million from investors including Balderton and Demis Hassabis, grew to 3 million customers, and was acquired by Marks & Spencer. He has been named in the Financial Times Top 10 Under 30, Drapers 30 Under 30, and Forbes 30 Under 30.
- Where does Kieran O'Neill work?
- Kieran O'Neill is Founder/CEO of Thread.
- What companies did Kieran O'Neill found?
- Kieran O'Neill founded Thread.
- Where did Kieran O'Neill go to school?
- Kieran O'Neill studied at Y Combinator (Making something people want. S12.); University of Bath (School of Management).
Founder mafias
Y Combinator mafia10,230
Also came through, then founded or led a company.
+ 10,223 more
University of Bath mafia63
Also came through, then founded or led a company.
+ 56 more
Same school
Also attended Y Combinator2,000
+ 1,994 more
Also attended University of Bath223
+ 217 more
Shared employers
Also worked at [building]1
Also worked at Marks and Spencer31
+ 25 more






































