Form 4: Brookline Bancorp CFO Disposes Shares Post-Merger Vesting

Brookline Bancorp's Co-President and CFO, Carl M. Carlson, disposed of common stock shares to cover tax obligations following the vesting of performance-based restricted stock.

Summary

• Carl M. Carlson, Co-President & CFO of Brookline Bancorp Inc. (BRKL), reported a disposition of common stock.
• The transaction occurred on August 25, 2025, and involved the disposition of 14,409 shares of common stock.
• The shares were disposed of at a price of $11.03 per share.
• This disposition was made to the issuer to satisfy tax withholding obligations upon the vesting of performance-based restricted stock.
• The restricted stock shares were granted pursuant to the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan and vested according to the terms of the Agreement and Plan of Merger by and among Berkshire Hills Bancorp, Inc., Commerce Acquisition Sub, Inc., and Brookline Bancorp, Inc.
• Following these transactions, Carl M. Carlson directly beneficially owns 156,695 shares of common stock and indirectly owns 1,033 shares through an ESOP.

Sentiment

Score: 6

Explanation: The transaction is a routine disposition of shares for tax withholding purposes following the vesting of performance-based restricted stock. While it reduces direct ownership, it's not a discretionary sale and generally indicates that performance targets were met, which is a neutral to slightly positive signal.

Positives

• The vesting of performance-based restricted stock indicates that the company likely met specific performance targets, which is a positive sign for operational execution.
• The transaction was made pursuant to a pre-arranged plan (Rule 10b5-1(c)), indicating a structured approach to executive compensation and tax management.

Negatives

• The disposition of 14,409 shares, even for tax purposes, reduces the direct equity stake of a key executive in the company.

Future Outlook

The filing does not provide explicit forward-looking statements or guidance, focusing solely on a past (or pre-planned future) insider transaction related to executive compensation.

Industry Context

This transaction is a routine insider filing common in the banking sector, where executive compensation often includes restricted stock units that vest over time. The mention of the merger with Berkshire Hills Bancorp provides context for the vesting event, indicating a significant corporate action that triggered the stock's release.

Comparison to Industry Standards

• The disposition of shares to cover tax withholding upon the vesting of restricted stock is a standard practice for executive compensation across various industries, including financial services.
• Many public companies, such as JPMorgan Chase & Co. or Bank of America Corp., have similar executive compensation structures involving restricted stock, and their executives routinely file Form 4s for tax-related dispositions upon vesting.

Stakeholder Impact

• Shareholders: A minor reduction in executive ownership, but the transaction is routine and not indicative of a lack of confidence.
• Employees: No direct impact mentioned, but the vesting of performance-based awards can be a positive signal for employee morale regarding company performance.

Key Dates

Recommendation

This Form 4 reports a routine disposition of shares by an executive to cover tax obligations upon the vesting of restricted stock, which was triggered by a merger agreement. It does not reflect a discretionary sale or purchase based on new information, and therefore, does not provide a basis for changing an existing investment recommendation.

Keywords

Brookline Bancorp, BRKL, Carl M. Carlson, SEC Form 4, Insider Transaction, Stock Disposition, Restricted Stock, Tax Withholding, Merger Agreement, Berkshire Hills Bancorp, Executive Compensation