Sigma Squared Summit
Get a glimpse into the future by meeting those who are building it.
What you need to know
The Sigma Squared Summit is a global invite-only event that unites the most ambitious young founders, serial entrepreneurs, thought leaders and investors to initiate change and push the boundaries of what is possible.
At our summits, you will get a glimpse into the future by meeting those who are building it while forming long-lasting partnerships and friendships.
This year, we're returning to Vienna - the city that hosted our very first Summit as Sigma Squared Society back in 2021.
Austria
Vienna
2026
30-31 October
SIGMA SQUARED FOUNDERS
400
+
thought LEADERS & INVESTORS
50
+
SPEAKERS
25
+
COUNTRIES
30
+
Our previous Summits
What our participants say
Patrick Nathen
Co-founder, Lilium
The kind of momentum, the ideas and the inspiration that you get here is very unique compared to any other founder summits that I have experienced so far.
Kami Krista
Co-founder, Elio
If I could only go to one conference every year, Sigma Squared Society’s global summit would be the one - hands down and by many miles. It’s indescribable magic where you build really deep professional and personal connections.
Sian Sutherland
Co-founder, A Plastic Planet
The Sigma Squared Summit brings together driven founders who are fearless and fully realise the imperative to reimagine and reinvent the world of business where positive impact is a more important metric than only profit.
Vaitea Cowan
Co-founder, Enapter
The variety of participants in the summit creates an open book of knowledge for fruitful conversations. It is a unique occasion to challenge our beliefs and co-create the roadmap for a better future.
2026 Speakers
Lily Vittayarukskul
Co-founder & CEO | Waterlily
Hansi Hansmann
Chairman | Hansi Hansmann's Family Office
Julian Teicke
Co-Founder & Executive Chairman | The Delta
Andrew Thompson
Co-founder & CEO | Proteus Digital Health
Robin Wauters
Co-founder | Tech.eu
Reem Wyndham
Founding Partner | Pact VC
Daniel Dippold
Founder | EWOR
George Robson
Partner | Sequoia Capital
Sebastian Becker
General Partner | Redalpine
Partners
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Join us as...
Volunteer
Apply if you're interested in volunteering and helping us organise an incredible event while getting a glimpse into the world of the most ambitious founders under 26.
Apply
Founder
Apply for a chance to win a summit ticket and participate in the invite-only event as an external founder.
Investor / C-Level
We offer a limited amount of summit tickets that can be purchased by C-level executives who wish to attend our summit. Following your application, a member of our team will reach out to you.
Hello@sigma-squared.org