Meditation app Calm on Tuesday said that it has raised $75 million in Series C funding led by Lightspeed Venture Partners. The round, which values the company at $2 billion, also saw participation from Goldman Sachs, Salesforce CEO Marc Benioff and Ashton Kutcher's Sound Ventures. Co-founders and co-CEOs Michael Acton Smith and Alex Tew founded Calm in 2012.