Bank of Marin Bancorp Executive Vice President David Bloom Reports ESOP Share Accumulation

ESOP Allocation and Dividend Reinvestment Activity at Bank of Marin

The filing discloses that David Bloom's indirect beneficial ownership of 1,656.68 shares held through the company's Employee Stock Ownership Plan includes both direct allocations and accumulated dividend gains. According to the explanation of responses in the filing, these shares represent 2024 and 2025 ESOP allocations that were posted to Bloom's account on December 31, 2024, along with additional ESOP shares resulting from dividend reinvestment activities occurring in 2025 and 2026. This structure reflects how Bank of Marin's ESOP operates as a component of executive and employee compensation, allowing participants to build equity stakes over time through both company contributions and reinvested dividends.

The accumulation pattern disclosed suggests that Bank of Marin maintains an active ESOP program that provides regular allocations to eligible participants and distributes or reinvests dividends throughout the calendar year. The specification of dividend reinvestment in 2025 and 2026 indicates that Bloom's ESOP holdings have grown beyond initial allocations, reflecting the bank's ability to generate returns to shareholders during these periods. This type of equity participation aligns with common practices among regional banks seeking to align executive interests with shareholder value creation.

Direct Common Stock Ownership by Bloom

In addition to his ESOP holdings, Bloom directly owns 22,961 shares of Bank of Marin Bancorp common stock, as reported in the filing. The disclosure indicates this is direct beneficial ownership, distinguishing it from the indirect ownership held through the ESOP. Combined with his ESOP shares, Bloom's total beneficial ownership position represents a meaningful stake in the company where he serves as Executive Vice President. The filing does not specify whether these direct shares were acquired through open market purchases, exercises of options, or other mechanisms, nor does it disclose the time periods over which these shares were accumulated.

The size of Bloom's direct shareholding demonstrates executive commitment to the company's success, as senior management holdings can signal confidence in the organization's strategic direction and financial performance. The combination of direct ownership and ESOP participation creates a dual ownership structure that ties compensation and benefits to company performance through multiple channels, a structure designed to promote alignment between executive incentives and shareholder interests.

Transaction Timing and Reporting Requirements

The earliest transaction date reflected in this ownership change report is December 31, 2024, with the disclosure filed on July 28, 2026. This timing indicates that the filing captures ESOP allocations and dividend reinvestment activity spanning the end of 2024 through mid-2026. The specific date of December 31, 2024, likely represents the annual posting date for ESOP contributions and allocations at Bank of Marin, a common practice for retirement and equity plans that settle year-end account updates on the final business day of the calendar year.

The filing was executed on behalf of Bloom by Krissy Meyer, identified as Attorney-in-Fact, and signed on July 28, 2026. This indicates that Bloom authorized representation by a legal professional or administrator to file the required beneficial ownership disclosure. The use of an authorized representative is permitted under Securities Exchange Act rules and is commonly employed by executives to manage regulatory compliance filings related to their securities holdings and transactions.

Executive Compensation Structure at Bank of Marin Bancorp

The disclosure provides evidence of Bank of Marin's approach to executive compensation, which incorporates equity-based benefits through its ESOP program. The ESOP structure allows the company to provide employees and executives with ownership opportunities while potentially offering tax advantages to both the company and participants. For an Executive Vice President like Bloom, ESOP participation represents one component of a compensation package that likely includes salary, cash bonuses, and other benefits typically available to senior management at regional financial institutions.

The dividend reinvestment feature noted in the filing suggests that Bank of Marin has maintained sufficient earnings to pay and reinvest dividends through 2025 and 2026, periods that encompassed challenging conditions in the regional banking sector. The ability to allocate regular ESOP shares and reinvest dividends indicates the company's continued financial stability and profitability during the timeframe covered by this disclosure, even as many regional banks faced pressures from interest rate movements and deposit competition.

Beneficial Ownership Classification and Disclosure Rules

The filing distinguishes between direct and indirect beneficial ownership, a distinction required by Securities Exchange Act Section 16 disclosure rules. Bloom's 22,961 common shares are held directly, while his 1,656.68 ESOP shares are held indirectly through the company's employee benefit plan. This classification affects how ownership is reported and tracked for regulatory purposes, including potential filing obligations and restrictions on trading activity. The nature of indirect ownership through an ESOP means that while Bloom has a beneficial interest in these shares, they are held in the plan's name rather than registered directly in his own name.

The distinction also carries implications for voting rights and economic benefits. ESOP participants typically retain voting rights on plan-held shares, either through direct voting or through pass-through voting mechanisms, depending on the plan's terms. The filing's explicit notation of the ESOP as the nature of indirect beneficial ownership ensures that regulators and investors can accurately understand the structure of Bloom's stake in Bank of Marin and the rights and restrictions associated with each portion of his holdings.

Section 16 Reporting Obligations for Bank of Marin Officers

David Bloom's filing of this ownership change report reflects his status as an officer of Bank of Marin Bancorp subject to Section 16 of the Securities Exchange Act. Officers and directors of publicly traded companies, including regional banks, must report changes in beneficial ownership of the company's securities. The filing documents his holdings as of the relevant transaction and reporting dates, fulfilling a key transparency requirement designed to keep investors and regulators informed about insider ownership patterns and potential conflicts of interest.

The checkbox on the Form 4 indicates that Bloom remains subject to Section 16 reporting obligations, meaning he continues in his role as Executive Vice President and must maintain ongoing disclosure of his securities transactions and holdings. The filing was not identified as an amendment to a previous report, indicating this represents an initial report of the described transactions and ownership positions, though updated filings may be submitted if circumstances change or additional information becomes available.

Investment Implications for Bank of Marin Shareholders

Insider ownership disclosures such as Bloom's can provide valuable context for investors assessing management's confidence in the company's prospects. The combination of direct common stock ownership and ESOP participation suggests that a senior executive has chosen to maintain meaningful equity exposure to Bank of Marin through multiple investment vehicles. The accumulation of shares through dividend reinvestment in recent years indicates either that Bloom has consistently chosen to reinvest ESOP dividends rather than take cash distributions, or that the plan's terms automatically reinvest dividends, both scenarios reflecting a long-term wealth accumulation strategy tied to the bank's performance.

For investors evaluating Bank of Marin, insider ownership levels can serve as one data point among many when assessing management alignment with shareholder interests. The scale of Bloom's direct and indirect holdings relative to Bank of Marin's total outstanding shares would provide additional context, though the filing does not state the company's total shares outstanding or calculate Bloom's percentage ownership. Investors seeking to understand executive compensation philosophies and insider confidence levels at the bank may find this disclosure relevant to their investment decision-making processes.

ESOP Benefits and Equity Participation Programs in Regional Banking

Bank of Marin's ESOP program reflects a broader industry trend among regional banks of using equity-based benefits to attract, retain, and incentivize senior executives and employees. ESOPs serve multiple functions within an organization: they provide tax-advantaged retirement savings vehicles for participants, they create ownership stakes that can improve employee engagement and retention, and they allow companies to issue shares for compensation purposes without immediate cash outlay. For financial institutions like Bank of Marin, which operate in competitive regional markets, such benefits help compete for talent against larger national and international banking organizations.

The disclosure of dividend reinvestment activity across 2025 and 2026 demonstrates that Bank of Marin's ESOP maintained sufficient value to distribute dividends to participants during this period. The filing does not disclose the per-share dividend amounts, the number of shares purchased through reinvestment, or the timing of dividend payments, but the presence of dividend reinvestment gains confirms that the plan generated distributable income. This feature of the ESOP adds to the total return realized by participants like Bloom, beyond the value appreciation or depreciation of Bank of Marin's stock price itself.

Regulatory Compliance and Filing Administration

The filing was prepared and submitted in accordance with Securities and Exchange Commission requirements governing insider ownership disclosures. The form includes all required elements: identification of the reporting person, the issuer name and ticker symbol, the relationship to the issuer, transaction dates, security descriptions, amounts of securities owned, and ownership forms. The signature block indicates execution by Krissy Meyer as Attorney-in-Fact for Bloom, a practice that streamlines administrative compliance while maintaining the legal accountability of the reporting person for the accuracy of disclosed information.

The OMB approval number and burden hour estimate contained in the form reflect the paperwork reduction requirements applicable to regulatory filings. The form explicitly warns that intentional misstatements or omissions of facts constitute federal criminal violations under 18 U.S.C. § 1001 and 15 U.S.C. § 78ff(a), emphasizing the serious legal consequences associated with providing false or misleading information in insider ownership reports. This regulatory framework ensures that investors and regulators can rely on the accuracy of disclosures regarding executive and director shareholdings at publicly traded companies.