Sweetgreen, the fast-casual salad chain, has raised $150 million in its latest round of financing, bringing the valuation of the company to $1.6 billion, solidly in “unicorn” territory. Lone Pine Capital and D1 Capital Partners co-led the funding round. The Washington, D.C.-based company plans to use the capital to expand its reach into more U.S. cities, such as Denver, Austin and Miami, with additional retail stores. Another area of expansion: “Outpost” locations, which are designated areas in office buildings where people can pick-up the Sweetgreen’s salads they’ve ordered online.