First Commons Bank intends to open a new, fully-staffed branch office in Wellesley, marking its first expansion.

The bank has filed an application with the Office of the Comptroller of the Currency (OCC) to open the branch. The Newton Centre-based bank began operations on July 22, 2009, to serve businesses and individuals in Newton, Wellesley, Waltham and eastern Massachusetts.

First Commons Bank has more than $110 million in assets and has surpassed the asset size of more than 2,900, or 38 percent, of all FDIC-insured banks in the nation – after just six quarters of operations.

"Our new branch, pending OCC and town approvals, will be located at 161 Linden St. in Linden Square, Wellesley, and is targeted to open around midyear 2011," said Tony Nuzzo, the bank’s chairman, president and CEO. "We also plan to build additional administrative offices adjacent to the proposed Wellesley branch to accommodate the new space requirements that have resulted from our growth."