Design software company Figma just went public in the hottest IPO of the year. Here's what its biggest investors' stakes are worth.

Danny Rimer, partner at Index Ventures, led Figma’s seed round in 2013, when the company’s stock was valued at just 9 cents per share. He said he has long been impressed by co-founder Dylan Field’s product vision, and agreed with Field’s thesis that design is “the most important determinant” of many consumer-facing tech businesses.

The price for design software developer Figma surged more than 250% on Thursday to close at over $117 per share after raising over $1.2 billion in an IPO, well over three times the $30-$32 range the company estimated in SEC filings earlier this week—making its 33-year-old CEO Dylan Field a billionaire.