BrewDog is worth more than £1bn after receiving a massive £213m investment.
TSG Consumer Partners from San Francisco bought a 22% stake in the company which has become an international leader in the emerging craft beer market.
Brewdog was started 10 years ago, operating out of co-founder Martin Dickie's mother's garage.
Following the deal, which was reported by The Sunday Times, Mr Dickie and fellow co-founder James Watt are set to earn £100m between them.
The company has run a series of crowdfunding drives since 2010 - its 'Equity for Punks' scheme offered shares to its backers.
From this week, these investors can now trade up to 15% of their shares. Those who got involved in the first round have seen their stakes grow in value by 2,800%.
BrewDog has also started an international network of branded pubs, covering most of the UK and stretching from Norway to Barcelona. It has also started building its first US bar in Ohio.
"We’re not going to let the deal go to our heads, but Martin did buy himself a new jumper," James Watt said following the cash injection.
Its total turnover increased by 60% last year and the company has told shareholders that it is expecting even stronger growth in 2017.
