# EDGAR Filing Document

**Accession Number:** 0001049782
**File Stem:** 0001104659-25-089408
**Filing Date:** 2025-9
**Character Count:** 2778
**Document Hash:** c584b3ffdf35890daec96be1460ac38c
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-25-089408.hdr.sgml**: 20250912

**ACCESSION NUMBER**: 0001104659-25-089408

**CONFORMED SUBMISSION TYPE**: 15-12G

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250912

**DATE AS OF CHANGE**: 20250912

**EFFECTIVENESS DATE**: 20250912

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BROOKLINE BANCORP INC
- **CENTRAL INDEX KEY:** 0001049782
- **STANDARD INDUSTRIAL CLASSIFICATION:** SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 15-12G
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 000-23695
- **FILM NUMBER:** 251310662

**BUSINESS ADDRESS:**
- **STREET 1:** 131 CLARENDON STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116
- **BUSINESS PHONE:** 617-425-4600

**MAIL ADDRESS:**
- **STREET 1:** 131 CLARENDON STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02116

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM 15**

**CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION**

**UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934**

**OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d)**

**OF THE SECURITIES EXCHANGE ACT OF 1934.**

**Commission File Number 000-23695**

**BROOKLINE BANCORP, INC.**

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

**131 Clarendon Street**

**Boston, Massachusetts 02116**

**(617) 425-4600**

**(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)**

**COMMON STOCK, $0.01 PAR VALUE**

**(Title of each class of securities covered by this Form)**

**NONE**

**(Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains)**

Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

---

| | |
|:---|:---|
| Rule 12g-4(a)(1) | ⌧ |
| Rule 12g-4(a)(2) | ◻ |
| Rule 12h-3(b)(1)(i) | ⌧ |
| Rule 12h-3(b)(1)(ii) | ◻ |
| Rule 15d-6 | ◻ |
| Rule 15d-22(b) | ◻ |

---

Approximate number of holders of record as of the certification or notice date: None

Pursuant to the requirements of the Securities Exchange Act of 1934, Brookline Bancorp, Inc. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

---

| | | | |
|:---|:---|:---|:---|
| DATE: | September 12, 2025 | BY: | /s/ Paul A. Perrault |
|  |  |  | Paul A. Perrault |
|  |  |  | Chief Executive Officer of Beacon Financial Corporation, Inc. (successor to Brookline Bancorp, Inc.)<br> (principal executive officer) |

---