SCHEDULE 13G

Bank of Marin Bancorp

Common Stock · CUSIP: 063425102

Event date: 2025-09-30

Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.

Filing-level shares

Unavailable

Percent of class

Unavailable

• Wellington Management Group LLP

  Shares: 943,534.00 · Class: 5.9%

• Wellington Group Holdings LLP

  Shares: 943,534.00 · Class: 5.9%

• Wellington Investment Advisors Holdings LLP

  Shares: 943,534.00 · Class: 5.9%

• Wellington Management Company LLP

  Shares: 943,534.00 · Class: 5.9%

Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.