30. MaryAnne Gilmartin – CEO, MAG Partners
2017 RANK: 11
CORPORATE ASSETS Worth $800 million
IMPACT Gilmartin is chairwoman emeritus of the Downtown Brooklyn Partnership, an executive committee member of BAM, a board member of New York Public Radio and an executive committee and board member of the Real Estate Board of New York.
ONCE, TWICE, four times a CEO.
At 56, MaryAnne Gilmartin has already been at the helm of four high-profile development firms in the city. She bought out her partners at L+L MAG to start MAG Partners in 2019. The company now controls a pipeline of three residential ground-up developments, as well as one commercial, in New York City.
While working on the new company, she was tapped to serve as the interim chief executive of New Jersey–based real estate investment trust Mack-Cali after investment group Bow Street partners ousted its previous leader, Michael DeMarco. Gilmartin has since relinquished the role and is back at her firm.
When she served as chief executive of Forest City Ratner Cos., she was a driving force behind some of the city’s most important developments including the Barclays Center and Pacific Park, which transformed Brooklyn, as well as the New York Times Building.