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(Mark one)

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(Exact name of the registrant as specified in its charter)

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(Registrant’s telephone number, including area code)

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Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months and (2) has been subject to such filing requirements for the past 90 days.   ☒  Yes     ☐  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    ☒  Yes    ☐  No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act:

If an emerging growth company, indicate by check mark if the Registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐  Yes    ☐  No

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  ☐  Yes    ☒  No

211,089,947 shares of the Registrant’s common stock, par value $0.01 per share, were outstanding as of April 30, 2025.

Index

(1)The Company declared quarterly cash dividends of $0.12 and $0.11 per share of common stock during the three months ended March 31, 2025 and 2024, respectively.

(2)Represents shares issued, net of employee tax withheld, upon the vesting of performance and restricted stock units. Refer to Note 9, “Employee Benefits” for additional discussion.

(3)Includes 7,452 restricted stock award shares cancelled upon vesting for employee payroll tax withholding and 2,983 restricted stock award shares cancelled upon forfeiture. Shares withheld relate to awards issued by Cambridge Bancorp to its employees which were converted to awards of the Company upon completion of the Company' merger with Cambridge Bancorp effective July 12, 2024 (“the merger”).

Eastern Bankshares, Inc., a Massachusetts corporation (the “Company”), is a bank holding company. Through its wholly-owned subsidiary, Eastern Bank (the “Bank”), the Company provides a variety of banking services and trust and investment services, through its full-service bank branches, located primarily in eastern Massachusetts, and southern and coastal New Hampshire.

The activities of the Company are subject to the regulatory supervision of the Board of Governors of the Federal Reserve System (“Federal Reserve”). The activities of the Bank are subject to the regulatory supervision of the Massachusetts Commissioner of Banks, the Federal Deposit Insurance Corporation (“FDIC”) and the Consumer Financial Protection Bureau (“CFPB”). The Company and the activities of the Bank and its subsidiaries are also subject to various Massachusetts, New Hampshire and Rhode Island business, banking and trust-related regulations.

The Company’s Consolidated Financial Statements have been prepared in conformity with accounting principles generally accepted in the United States (“GAAP”) as set forth by the Financial Accounting Standards Board (“FASB”) and its Accounting Standards Codification (“ASC”) and Accounting Standards Updates (“ASU”) as well as the rules and interpretive releases of the U.S. Securities and Exchange Commission (“SEC”) under the authority of federal securities laws.

The Consolidated Financial Statements include the accounts of the Company, its wholly-owned subsidiaries and entities in which it holds a controlling financial interest through being the primary beneficiary or through holding a majority of the voting interest. All intercompany accounts and transactions have been eliminated in consolidation.

Certain previously reported amounts have been reclassified to conform to the current period’s presentation which includes:

•reclassification of escrow deposits of borrowers to savings accounts and the related interest expense from interest on borrowings to interest on deposits; and

•combination of certain credit card income balances previously included in other noninterest income and debit card processing fees into a new financial statement line item titled “card income.”

The accompanying Consolidated Balance Sheet as of March 31, 2025, the Consolidated Statements of Income and Comprehensive Income and of Changes in Shareholders’ Equity for the three months ended March 31, 2025 and 2024 and Statements of Cash Flows for the three months ended March 31, 2025 and 2024 are unaudited. The Consolidated Balance Sheet as of December 31, 2024 was derived from the Audited Consolidated Financial Statements as of that date. The interim Consolidated Financial Statements and the accompanying notes should be read in conjunction with the annual Consolidated Financial Statements and the accompanying notes contained within the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024 (“2024 Form 10-K”), as filed with the SEC. In the opinion of management, the Company’s Consolidated Financial Statements reflect all adjustments, which include only normal recurring adjustments, necessary for a fair statement of the results of operations for the periods presented. The results for the three months ended March 31, 2025 are not necessarily indicative of results to be expected for the year ending December 31, 2025, any other interim period, or any future year or period.

The following describes the Company’s use of estimates as well as relevant accounting pronouncements that were recently issued but not yet adopted as of March 31, 2025 and those that were adopted during the three months ended March 31, 2025. For a full discussion of significant accounting policies, refer to the Notes to the Consolidated Financial Statements included within the Company’s 2024 Form 10-K.

In preparing the Consolidated Financial Statements in conformity with GAAP, management is required to make estimates and assumptions that affect the reported amounts of assets and liabilities as of the date of the balance sheets and income and expenses for the periods reported. Actual results could differ from those estimates based on changing conditions, including economic conditions and future events. Material estimates that are particularly susceptible to change relate to the determination of the allowance for credit losses, valuation and fair value measurements, the liabilities for benefit obligations (particularly pensions), the provision for income taxes and impairment of goodwill and other intangibles.

In October 2023, the FASB issued ASU 2023-06, Disclosure Improvements–Codification Amendments in Response to the SEC’s Disclosure Update and Simplification Initiative (“ASU 2023-06”). The amendments in this update modify the disclosure or presentation requirements for a variety of topics in the codification. Certain amendments represent clarifications to or technical corrections of the current requirements. The following is a summary of the topics included in the update and which pertain to the Company:

1.Statement of cash flows (Topic 230): Requires an accounting policy disclosure in annual periods of where cash flows associated with derivative instruments and their related gains and loses are presented in the statement of cash flows;

2.Accounting changes and error corrections (Topic 250): Requires that when there has been a change in the reporting entity, the entity disclose any material prior-period adjustment and the effect of the adjustment on retained earnings in interim financial statements;

3.Earnings per share (Topic 260): Requires disclosure of the methods used in the diluted earnings-per-share computation for each dilutive security and clarifies that certain disclosures should be made during interim periods, and amends illustrative guidance to illustrate disclosure of the methods used in the diluted earnings per share computation;

4.Commitments (Topic 440): Requires disclosure of assets mortgaged, pledged, or otherwise subject to lien and the obligations collateralized; and

5.Debt (Topic 470): Requires disclosure of amounts and terms of unused lines of credit and unfunded commitments and the weighted-average interest rate on outstanding short-term borrowings.

For public business entities, the amendments in ASU 2023-06 are effective on the date which the SEC’s removal of that related disclosure from Regulation S-X or Regulation S-K becomes effective. If by June 30, 2027, the SEC has not removed the applicable requirement from Regulation S-X or Regulation S-K, the pending content of the related amendment will be removed from the codification and will not become effective for any entity. Early adoption is not permitted and the amendments are required to be applied on a prospective basis. The Company expects the adoption of this standard will not have a material impact on its Consolidated Financial Statements.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this update are intended to improve income tax disclosure requirements, primarily through enhanced disclosures related to the existing requirements to disclose a rate reconciliation, income taxes paid and certain other required disclosures. Specifically, the amendments in this update:

1.Require that a public entity disclose, on an annual basis: (1) specific categories in the rate reconciliation and (2) additional information for reconciling items that meet a quantitative threshold. The update requires disclosure of such reconciling items according to requirements indicated in the update.

2.Require that all entities disclose certain disaggregated information regarding income taxes paid.

3.Require that all entities disclose certain disaggregated information regarding income tax expense.

4.Eliminate the requirement to: (1) disclose the nature and estimate of the range of reasonably possible changes in the unrecognized tax benefits balance in the next 12 months or (2) make a statement that an estimate of the range cannot be made.

5.Remove the requirement to disclose the cumulative amount of each type of temporary difference when a deferred tax liability is not recognized because of exceptions to comprehensive recognition of deferred taxes related to subsidiaries and corporate joint ventures.

For public business entities, the amendments in ASU 2023-09 are effective for annual periods beginning after December 15, 2024. Adoption should be done on a prospective basis and retrospective application is permitted.

In November 2024, the FASB issued ASU 2024-03, Income Statement–Reporting Comprehensive Income–Expense Disaggregation Disclosures (Subtopic 220-40). The amendments in this update require disclosure, in the notes to the financial statements, of specified information about certain costs and expenses. The amendments require that at each interim and annual reporting period an entity:

1.Disclose the amounts of (a) purchases of inventory, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, and (e) depreciation, depletion, and amortization recognized as part of oil and gas-producing activities (or other amounts of depletion expense) included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement within continuing operations that contains any of the expense categories listed in (a)–(e).

2.Include certain amounts that are already required to be disclosed under current GAAP in the same disclosure as the other disaggregation requirements.

3.Disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively.

4.Disclose the total amount of selling expenses and, in annual reporting periods, an entity’s definition of selling expenses.

For public business entities, the amendments in ASU 2024-03 are effective for annual periods beginning after December 15, 2026 and interim periods beginning after December 15, 2027. Early adoption is permitted. The amendments in this update are to be applied either (1) prospectively to financial statements issued for reporting periods after the effective date of this update or (2) retrospectively to any or all prior periods presented in the financial statements.

The amortized cost, gross unrealized gains and losses, allowance for credit losses (“ACL”) and fair value of available for sale (“AFS”) securities as of the dates indicated were as follows:

			As of March 31, 2025
			Amortized Cost						Unrealized Gains						Unrealized Losses						Allowance for Credit Losses						Fair Value
			(In thousands)
Debt securities:
Government-sponsored residential mortgage-backed securities			$	2,941,128					$	8,868					$	(302,358)					$	—					$	2,647,638
Government-sponsored commercial mortgage-backed securities			1,180,724						5,087						(109,042)						—						1,076,769
U.S. Treasury securities			100,019						195						(95)						—						100,119
State and municipal bonds and obligations			196,037						—						(16,634)						—						179,403
			$	4,417,908					$	14,150					$	(428,129)					$	—					$	4,003,929

The Company did not record a provision for credit losses on any AFS securities for either the three months ended March 31, 2025 or 2024. Accrued interest receivable on AFS securities totaled $13.0 million and $8.9 million as of March 31, 2025 and December 31, 2024, respectively, and is included within other assets on the Consolidated Balance Sheets. The Company did not record any write-offs of accrued interest receivable on AFS securities during either the three months ended March 31, 2025 or 2024. No AFS securities held by the Company were delinquent on contractual payments as of March 31, 2025 or December 31, 2024, nor were any AFS securities placed on non-accrual status during the three- and twelve-month periods then ended.