# EDGAR Filing Document

**Accession Number:** 0001221397
**File Stem:** 0001193125-25-303858
**Filing Date:** 2025-12
**Character Count:** 7259
**Document Hash:** c89c7519c9f4f61eecca94b1b7968e3a
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-303858.hdr.sgml**: 20251201

**ACCESSION NUMBER**: 0001193125-25-303858

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251126

**FILED AS OF DATE**: 20251201

**DATE AS OF CHANGE**: 20251201

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** CASEY JOSEPH F
- **CENTRAL INDEX KEY:** 0001221397

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39610
- **FILM NUMBER:** 251539623

**MAIL ADDRESS:**
- **STREET 1:** C/O HARBORONE BANCORP, INC.
- **STREET 2:** 770 OAK STREET
- **CITY:** BROCKTON
- **STATE:** MA
- **ZIP:** 02301
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Eastern Bankshares, Inc.
- **CENTRAL INDEX KEY:** 0001810546
- **STANDARD INDUSTRIAL CLASSIFICATION:** SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 125 HIGH STREET, STE 901
- **STREET 2:** OLIVER STREET TOWER
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02110
- **BUSINESS PHONE:** 617-897-1100

**MAIL ADDRESS:**
- **STREET 1:** 125 HIGH STREET, STE 901
- **STREET 2:** OLIVER STREET TOWER
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02110

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

[ ] Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>CASEY JOSEPH F<br><sub>(Last) (First) (Middle)</sub><br>125 HIGH STREET<br><sub>(Street)</sub><br>BOSTON, MA 02110<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-11-26 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [ ] 10% Owner<br>[ ] Officer (give title below) [ ] Other (specify below)<br>_ _ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Eastern Bankshares, Inc. [ EBC ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-11-26 |  | M |  | 322771 | A | 12.59<sup>(1)</sup> | 358883 | D |  |
| Common Stock | 2025-11-26 |  | S |  | 322771 | D | 19.03<sup>(2)</sup> | 36112 | D |  |
| Common Stock |  |  |  |  |  |  |  | 107160 | I | By Spouse |
| Common Stock |  |  |  |  |  |  |  | 83962 | I | By Trust |
| Common Stock |  |  |  |  |  |  |  | 19732 | I | Rollover IRA |
| Common Stock |  |  |  |  |  |  |  | 24772 | I | Traditional IRA |
| Common Stock |  |  |  |  |  |  |  | 11704 | I | By ESOP |
| Common Stock |  |  |  |  |  |  |  | 43192 | I | By 401(k) |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Stock Option (Right to Buy) | $11.74 | 2025-11-26 |  | M |  |  | 118947 | 2025-11-01 | <sup>(3)</sup> | Common Stock | 118947 | $0 | 0 | D |  |
| Stock Option (Right to Buy) | $12.80 | 2025-11-26 |  | M |  |  | 101912 | 2025-11-01 | <sup>(3)</sup> | Common Stock | 101912 | $0 | 0 | D |  |
| Stock Option (Right to Buy) | $13.38 | 2025-11-26 |  | M |  |  | 101912 | 2025-11-01 | <sup>(3)</sup> | Common Stock | 101912 | $0 | 0 | D |  |

---

### Footnotes:

(1) The price reported is a weighted average price of the options tranches exercised.

(2) Represents the average sales price. The actual sale prices range from $19.00 to $19.16 per share. The reporting person will supply the SEC, the Issuer, or a security holder of the Issuer, with full information regarding the number of shares at each price upon request.

(3) Pursuant to the terms of the Agreement and Plan of Merger dated April 24, 2025 among Eastern Bankshares, Inc. ("Eastern"), Eastern Bank, HarborOne Bancorp, Inc. ("HarborOne"), and HarborOne Bank, upon the merger of HarborOne into Eastern, effective November 1, 2025, the stock option must be exercised no later than February 1, 2026 (i.e., three (3) months from the time reporting person's employment as an executive of HarborOne was terminated).

**Signature:** /s/ Kathleen R. Henry, by Power of Attorney  
**Date:** 2025-12-01

### Remarks:

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

**Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.**