Manifest Digital, a St. Louis-based digital creative agency, signed a seven-year lease for 16,751 square feet in the office building at 4240 Duncan Ave. in St. Louis, MO. The three-story @4240 building totals 183,000 square feet. It was originally built in 1948 on 2.7 acres in the St. Louis City County submarket, and was renovated in early 2014. The building is currently home to Washington University, and other tenants that have signed on here include Boeing Ventures and Cambridge Innovation Center.