To view the full story, click the title link. : Head(s) of office: Ric Clark, chairman, and Ben Brown, managing partner 2020 Rentable building area (in millions of sq. Ft.) 26.73 2019 Rentable building area (in millions of sq. Ft.) 22.95 Number of buildings in Manhattan: 20 Head(s) of office: Marc Holliday, chairman and chief executive 2020 Rentable building area (in millions of sq. Ft.) 26.70 2019 Rentable building area (in millions of sq. Ft.) 25.20 Number of buildings in Manhattan: 50 Head(s) of office: Steven Roth, chairman and chief executive, David Greenbaum, vice chairman, Michael Franco, President 2020 Rentable building area (in millions of sq.