ThinkEquity Partners subleased 20,161 square feet of office space at the Transamerica Pyramid at 600 Montgomery St. in San Francisco's Financial District.

The research and investment banking firm signed a deal for 4.6 years. It plans to occupy the entire 8th floor in June. Bank of America formerly occupied the space.

Transamerica Pyramid is a landmark 48-story, Class-A office building totaling 484,545 square feet. The property offers on-site management, 24-hour security, full service concierge, covered parking with auto detailing and valet services, banking and dry cleaning.

Kevin Delehanty of Colliers International in San Francisco represented ThinkEquity Partners. Jeff Criswell and Mike Whittington of Jones Lang LaSalle Inc. in San Francisco represented the sublessor, Bank of America.