 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating whether the merger of Bank of Marin Bancorp NASDAQ: BMRC and American River Bankshares is fair to Bank of Marin shareholders. Halper Sadeh encourages Bank of Marin shareholders to click here to learn more about their legal rights and options or contact Daniel Sadeh or Zachary Halper at 212 763-0060 or or The investigation concerns whether Bank of Ma 