A company backed by new Dragons' Den star and Social Chain co-founder Steven Bartlett has listed on a US stock exchange.
Atai Life Sciences, which is headquartered in Berlin, Germany, has completed its Nasdaq IPO.
The company is a clinical-stage biopharmaceutical firm aiming to transform the treatment of mental health disorders.
The IPO is expected to have raised proceeds of $225m.
In a series of tweets, Mr Bartlett said: "Today, the most important company I’ve ever encountered, worked on and invested in, goes public.
"Atai life sciences is using psychedelic & non-psychedelic treatments to heal mental health disorders so that everyone, everywhere, can live a more fulfilled life.
"I joined the company as a Series C investor and then become creative director shortly after.
"I can honestly say that if any company is to effectively tackle the global mental health crisis, it is Atai.
"Today is a monumental milestone on our journey towards a better future."
Mr Bartlett is soon to join Dragons Peter Jones, Deborah Meaden, Touker Suleyman and Sara Davies for the 19th series of the BBC One programme.
Mr Bartlett is the co-founder and former CEO of social media marketing agency The Social Chain, which he set up from his bedroom.
Credit Suisse, Citigroup, Cowen, and Berenberg are acting as book-running managers for the proposed offering. Cantor, RBC Capital Markets and Canaccord Genuity are also acting as book-running managers for the proposed offering.
Atai, which was founded in 2018, is headquartered in Berlin, with offices in New York and London.
