Form 4: Brookline Bancorp CEO's Routine Share Disposition

Brookline Bancorp's CEO, William C. Tsonos, reported the disposition of common shares to cover tax obligations related to restricted stock vesting.

Summary

• William C. Tsonos, CEO of Bank Rhode Island and Director of Brookline Bancorp Inc. (BRKL), reported changes in his beneficial ownership.
• On August 2, 2025, Mr. Tsonos disposed of a total of 2,393 common shares (380, 127, 872, and 964 shares in separate transactions).
• These dispositions were made at a price of $10.28 per share.
• The transactions were coded 'F', indicating a disposition to the issuer to satisfy tax withholding obligations.
• The shares disposed were related to performance-based restricted stock shares granted pursuant to the Brookline Bancorp, Inc. 2021 Stock Option and Incentive Plan.
• These restricted shares vest on the third anniversary of the grant date based on certain performance metrics.
• Following these transactions, Mr. Tsonos directly beneficially owns 46,322 common shares.
• Additionally, Mr. Tsonos indirectly beneficially owns 1,191 common shares through an ESOP.

Sentiment

Score: 5

Explanation: The filing reports a routine, non-discretionary insider transaction (disposition of shares for tax withholding upon vesting of restricted stock). This type of event is neutral in terms of its implications for the company's financial health or future prospects, as it is a standard part of executive compensation.

Positives

• The disposition of shares is a routine, non-discretionary event (Code F) to cover tax withholding obligations upon the vesting of restricted stock, indicating a standard process for executive equity compensation.
• The vesting of performance-based restricted stock implies that certain company performance metrics were met, leading to the shares becoming exercisable.

Negatives

• The direct beneficial ownership of common shares by the CEO decreased by 2,393 shares as a result of the tax-related disposition.

Future Outlook

The filing indicates that performance-based restricted stock shares granted under the 2021 Stock Option and Incentive Plan vest on the third anniversary of the grant date based on certain performance metrics. No other forward-looking statements regarding company performance or strategic direction are provided.

Industry Context

This Form 4 filing represents a routine insider transaction common across publicly traded companies, particularly in the financial services sector, where executive compensation often includes equity awards like restricted stock. The disposition of shares to cover tax obligations upon vesting is a standard practice and does not typically signal a change in management's outlook on the company's prospects.

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 all industries, including banking.
• This type of transaction (Code F) is a common and expected event for executives receiving equity awards, aligning with typical compensation structures seen in comparable financial institutions.

Stakeholder Impact

• Shareholders: A minor reduction in direct insider ownership, but this is a routine tax-related event and not indicative of a lack of confidence.
• Employees: The vesting of restricted stock highlights the company's equity compensation plan, which can be a positive for employee retention and alignment with company performance.

Next Steps

• Continued vesting of performance-based restricted stock shares as per the 2021 Stock Option and Incentive Plan, contingent on meeting specified performance metrics.

Key Dates

Recommendation

This Form 4 reports a routine, non-discretionary sale of shares by an insider to cover tax obligations upon the vesting of restricted stock. It does not reflect a change in the insider's investment sentiment or the company's fundamentals, thus it provides no new information to warrant a change in investment thesis. The stock should be held based on existing fundamental analysis.

Keywords

Brookline Bancorp, BRKL, Form 4, insider transaction, share disposition, restricted stock, equity compensation, William C. Tsonos, CEO, Bank Rhode Island