NEW YORK—Millward Brown, a global research agency, and its specialty practice Firefly has signed a 50,778-sq.-ft., long-term lease at Merritt 7 Corporate Park, an office complex located in Norwalk, Conn. The lease is the largest transaction closed in the central submarket in 2012 to date.

The CBRE team of Tom Pajolek, executive vice president, Robert Caruso, senior managing director, and Senior Vice Presidents Steven Greenbush and Ned Burns oversees the property’s leasing under the guidance of real estate investment management firms Clarion Partners and Marcus Partners. Millward Brown was represented in the lease negotiations by CBRE’s Sean Cahill and Susanne Dengenis.

“We based our decision to relocate to Merritt 7 on a number of factors, including the campus’ rich amenity package, central location adjacent to the Metro North train station, and well-respected ownership,” said Millward Brown’s North American President Simon Moody.

Merritt 7 Corporate Park is a LEED-certified, six-building campus with 1.4 million sq. ft. of space. Amenities available at the property include on-site dining and catering services, a fitness center, banking, car rental, Starbucks café and a sundry shop.

Located on a 22-acre campus along the Norwalk River, Merritt 7 Corporate Park includes sustainable design features and has earned LEED EB certification from the U.S. Green Building Council at five of its six buildings. The campus is situated next to the Merritt 7 Metro North Station and is in close proximity to major highways.

Other tenants include EMCOR, General Electric, Marsh USA and Siemens, among others.