Retro raises $21M Series A, now valued over $100M
Retro, a friend-focused photo-sharing app founded by former Instagram engineers Nathan Sharp and Ryan Olson, closed a Series A round of more than $21 million in December, according to an SEC filing spotted by Business Insider. The filing was made under the startup's legal name, Lone Palm Labs, and Pitchbook now pegs the company's valuation above $100 million.