Needham Bank’s Dedham branch. Its acquisition of BankProv will give the bank $6.79 billion in assets and both branches and commercial real estate relationships in southern New Hampshire. Photo courtesy of Needham Bank

Needham Bank now has official approval for its latest acquisition: Amesbury-based BankProv.

All required regulatory approvals have now been received to complete the proposed merger and BankProv stockholders have approved the merger, the two banks announced Monday. The value of the transaction is estimated to be $211.8 million.

“Obtaining all required regulatory approvals in the timeframe we were able to secure them speaks to the commitment and efforts of these two organizations coming together as one,” Needham Bank Chairman, President and CEO Joseph Campanelli said in a statement. “We look forward to expanding our footprint to the north and bringing the same products and services that have defined our 133-year history, while continuing to serve the needs of our customers, employees, and communities as a true community bank.”

The combined organization will operate 18 branches across Massachusetts and Southern New Hampshire and will have approximately $7.1 billion in assets, including $6.1 billion in total loans, plus $5.9 billion in total deposits. The merged company is expected to be the sixth-largest Massachusetts-based bank in the Greater Boston metro area based on deposit market share.

“I am proud of what BankProv has built, and I’m equally excited to see how Needham Bank will take that foundation even further,” BankProv President and CEO Joseph Reilly said in a statement. “Their commitment to innovation and community mirrors our own, and I am excited for the opportunities this next chapter will create.”

The proposed merger is expected to be completed on Nov. 14. The planned date for a systems conversion was not immediately available.