Newport, N.H. — Lake Sunapee Bank Group, which has 35 branches in New Hampshire and Vermont, has agreed to be acquired by Maine-based Bar Harbor Bankshares in an all-stock, $143 million transaction.

Existing branches in the Twin States are expected to continue to operate under the Lake Sunapee brand under the deal, which is subject to state and federal approval, the banks said in a news release.

Lake Sunapee was founded in 1868 as Newport Savings Bank.

—

Posted online at 1:05 p.m. For a full report, see Saturday’s Valley News.