Exhibit 99.1 Eastern Bankshares, Inc. Reports Second Quarter 2025 Financial Results Strong Performance Reflects Focus on Growth and Profitability BOSTON, July 24, 2025 — Eastern Bankshares, Inc. (the "Company") (NASDAQ: EBC), the holding company of Eastern Bank, today announced its second quarter 2025 financial results. FINANCIAL HIGHLIGHTS | | | Jun 30, 2025 | As of and for three months ended | Mar 31, 2025 | | Linked quarter Change △ $ | △ % | | --- | --- | --- | --- | --- | --- | --- | --- | | (Unaudited ...