Foursquare’s Tristan Walker Checks Out For Andreessen Horowitz FourSquare's Tristan Walker is checking out for Andreessen Horowitz. Foursquare has entered the mostly uneventful period between ...

After being one of the star original employees at Foursquare, Tristan Walker became an Entrepreneur In Residence at Andreessen Horowitz. There, he had the opportunity to imagine and build his own ...

Tristan Walker, 30, has worked at startups like Foursquare and Twitter -- but now he’s paving a new route in Silicon Valley. In 2013, he launched Walker and Company Brands, a health and beauty ...