CHICAGO-Braintree, an online payment company, has leased 26,350 square feet at River Center here at 111 N. Canal St. for its headquarters. The company signed a five-year deal at the 768,000-square-foot West Loop building, located across from Metra Ogilvie Transportation Center at Union Station.

The building is about 76% occupied, and includes tenants such as TEKSystems and Zacks Investment Research Inc. The property is known for its large 57,800-square-foot floorplates. Fred Friedman, director of leasing and a partner of River Center LLC, said in a statement that Braintree wanted the ability to lease all on one floor. “The modern work environment needs to be able to support employees’ professional and emotional growth,” he said. “The cooperative work model does this by offering places for communal work and play.”

The West Loop, the largest of the downtown submarkets at 48.4 million square feet, has also been one of the most successful due to its transportation hubs. The office vacancy rate for the West Loop stands at about 14.8%, just under the total CBD vacancy of 15.4%.