SL Green's Marc Holliday. 125 Park Avenue.

The Spanish bank has signed a 15-year lease for 6,234 square feet on the ground floor of SL Green Realty’s 26-story office building at 125 Park Avenue, also known as the Pershing Square Building, according to tenant broker Reshape Retail.

The deal represents a relocation for Santander Bank, which will move from its current branch about a block northwest at 330 Madison Avenue to its new spot on the corner of Park Avenue and East 41st Street by the end of 2026.