BOSTON & BROCKTON, Mass.--( BUSINESS WIRE )--Eastern Bankshares, Inc. ("Eastern" or "the Company") (Nasdaq: EBC), the holding company for Eastern Bank, and HarborOne Bancorp ("HarborOne") (Nasdaq: HONE), the holding company for HarborOne Bank, today jointly announced they have entered into a definitive merger agreement pursuant to which HarborOne will merge with and into Eastern in a stock and cash transaction. Under the terms of the merger agreement, which has been unanimously adopted by both bo...