NEW JERSEY—Mack-Cali Realty Corporation has leased 450,476 square feet at its office and office/flex properties in Northern and Central New Jersey during the second quarter of 2012.

Three of the largest leases signed at Mack-Cali properties during the first quarter of 2012 include:

• MD On-Line Inc., a provider of electronic data interchange (EDI) solutions, which signed a new lease for 33,196 sq. ft. at 6 Century Drive in Parsippany, relocating and expanding from 9,867 sq. ft. at another property in the Mack-Cali Business Campus. Mack-Cali was represented in-house by Diane Chayes, senior vice president of leasing.

• Enercon Services Inc. signed a new lease for 25,768 sq. ft. at 4 Campus Drive in Parsippany. The 147,475-sq.-ft. office building, located in Mack-Cali Business Campus, is 77.9 percent leased. The tenant was represented in the transaction by Christopher D. Olsen and Brendan McBride, both of Newmark Grubb Knight Frank, and Evonne Keene of Transwestern. Mack-Cali was represented in-house by Diane Chayes.

• Cover-All Technologies Inc., a developer of software solutions for the property and casualty insurance industry, signed a new lease for 23,412 sq. ft. at the 475,100-sq.-ft. 412 Mt. Kemble Avenue in Morris Township. The tenant was represented in the transaction by Paul Hindes, Ken Flynn and James Scanlon, all formerly of Jones Lang LaSalle. Mack-Cali was represented in-house by Diane Chayes.

In addition to these leases, Xoriant Corporation took space at 343 Thornall Street in Edison; Paragon Solutions took space at 25 Commerce Drive in Cranford; Fidelity Brokerage Services L.L.C. took space at Harborside Financial Center; and PBF Holding Company L.L.C. took space at One Sylvan Way in Parsippany.