MaryAnne Gilmartin
Founder and CEO at MAG Partners
Last year's rank: 45
MAG Partners scaled its business in a big way during the past year and not long after the company’s birth.
The developer, which MaryAnne Gilmartin founded in July 2020, launched leasing in February for its inaugural New York project, the 480-unit Ruby residential development at 243 West 28th Street in Chelsea. Thirty percent of the units are designated as affordable, and the property includes 8,500 square feet of ground-floor retail. It is named after Black fashion designer Ruby Bailey, and it marked the first of a portfolio of multifamily buildings MAG plans to name after historical and influential women.
“Ruby embodies what we as a company did through the pandemic, where we doubled down on New York and we bet on the city when people were writing its obituary,” Gilmartin said. “We managed to get the financing and the construction underway in very, very difficult circumstances. And now, behold, we have this beautiful building.”
Two other New York City projects from MAG began to take shape in the past year, including at 335 Eighth Avenue, where demolition has begun for a 188-unit rental building. MAG’s project team also assembled a development site at 300 East 50th Street with plans for construction later this year.
Gilmartin also led MAG’s expansion into the Baltimore market by joining with MacFarlane Partners in May 2022 on a 177-acre master-planned community project in South Baltimore. The 1.1 million-square-foot mixed-use development also includes sponsorship from Sagamore Ventures, the family office of Under Armour founder and chairman Kevin Plank, as well as Goldman Sachs’ Urban Investment Group. Since taking over in the developer role, Gilmartin has signed two commercial leases and an extended-stay hotel development deal, and also started the residential lease-up of nearly 600 units, with a 20 percent affordable component.
“We’ll always be a New York company, but our love of New York and our ability to do what we do, which is to build multiple asset classes and think really big and boldly, brought us to Baltimore,” Gilmartin said. “I think that that was a high-water mark for us to grow the company outside of New York and actually put a flag in the dirt in Baltimore.”
Growing MAG’s footprint into Baltimore contributed to the company more than tripling its employee roster. It now has 33 on staff, 50 percent of them female.
