Online Ad Platform AppNexus Raises $75 Million to Grow

AppNexus, the ad tech startup that counts Microsoft among its clients, announced today it had raised $75 million in a Series D round led by Technology Crossover Ventures, with participation by Venrock and Tribeca Venture Partners. CEO Brian O’Kelley said the money will go into adding more people and expanding and improving the platform. With this round, the New York City company has raised $140.5 million.