 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating Pacific Mercantile Bancorp NASDAQ: PMBC for potential violations of the federal securities laws andor breaches of fiduciary duties relating to its sale to Banc of California, Inc. Under the terms of the agreement, Pacific Mercantile shareholders will receive 0.5 shares of Banc of California common stock for each share of Pacific Mercantile common stock they own. Halper Sadeh encourages Pacific Me 