Jack Cantillon

Partner & Co-founder, Green Room

📍 Ireland🔄 Updated October 2026💼 2 investments📅 10 years investing🗓 Last invested Apr 2021
VC🌍 Ireland
2
Total investments
0
Early stage
0
Mid stage
1
Late stage
10y
Years active

Portfolio

2 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor
Apr 2021
A startup or start-up is started by individual founders or entrepreneurs to search for a repeatable and scalable business model. More specifically, a startup is a newly emerged business venture that aims to develop a viable business model to meet a marketplace need or problem. Founders design startups to effectively develop and validate a scalable business model. [Source: Wikipedia]
Board Member
Mar 2016
The London Irish Graduate Network (LIGN) was formed to help ambitious, talented and business focused Irish people build their networking platform in London. With our academic, professional, commercial and social events, we aim to connect Irish undergraduates, postgraduates and those working in graduate programmes. Our society hosts a range of different events from social nights to topical discussions, with commercial issues a common theme intertwined with networking opportunities for our members.
late stageEvents Services
Experience · 8 entries
All (8)
Investments (2)
Founder (4)
Board (1)
2025
Partner & Co-founder
May 2025
Europes greatest asset isnt land, capital, or tax policy. Its people. We find exceptional people who are not founders today, and help them to build category-defining companies.
2021
CEO and Co-Founder
Jun 2021
OneTake is a social App for the Kenyan Gen z community, a new form of social media which brings realism and authentic connection back.
early stageEntertainment
Investor
Apr 2021
A startup or start-up is started by individual founders or entrepreneurs to search for a repeatable and scalable business model. More specifically, a startup is a newly emerged business venture that aims to develop a viable business model to meet a marketplace need or problem. Founders design startups to effectively develop and validate a scalable business model. [Source: Wikipedia]
EF16
Apr 2021
Entrepreneurs First invests in exceptional individuals to build startups from scratch. We bring together talented outliers to develop their most ambitious ideas and raise money from the world’s best investors. Since pioneering Talent Investing in 2015, we’ve learned to recognize individuals with extraordinary futures before anyone else, embedding them in a community of ambitious peers and giving them the tools they need to succeed, fast. We back them before they have a company, a team, even before they have an idea, based purely on talent. EF’s portfolio is now collectively valued at over $16B, and includes companies such as Aztec, Cleo, Magdrive, Neptune, Omnea, Opply, PolyAI, Tractable, and many more. EF is backed by some of the worlds leading founders and investors, including Founders Fund, Greylock, John Collison (founder – Stripe), Patrick Collison (founder – Stripe), Reid Hoffman (founder – LinkedIn), Eric Schmidt (former CEO - Google), Demis Hassabis (founder – Google DeepMind ), Taavet Hinrikus (founder – Wise), Matt Mullenweg (founder – WordPress), Charlie Songhurst (Board member – Meta), Christa Davies (Board member – Stripe), Lachy Groom (founder – Physical Intelligence), Aidan Gomez (founder – Cohere), Mati Staniszewski (founder – ElevenLabs), Danny Rimer (Partner - Index Ventures), Matt Cohler (former General Partner - Benchmark). We exist to make great companies happen that otherwise wouldn’t. For more information about Entrepreneurs First, visit www.joinef.com Were hiring! Join our global team and experience firsthand the workings of a globally unique talent investor working with cutting edge entrepreneurs on world changing technologies: https://www.joinef.com/about/careers
2019
Founder
Sep 2019
We buy the best value racehorses throughout the world and divide them amongst our owners to make racehorse ownership as accessible as possible. Fun, honest and with a proven track record we believe were the best syndicate to start your heart racing today.
early stageSpectator Sports
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