X0306 4 2020-03-10 false 0001109546 PACIFIC MERCANTILE BANCORP PMBC 0001561111 Deutsch James F. C/O PATRIOT FINANCIAL PARTNERS, L.P. 4 RADNOR CORP. CENT., 100 MATSONFORD RD SUITE 210 RADNOR PA 19087 true false false true See Remarks (1) Common Stock 2020-03-10 4 P false 24000.00 5.1076 A 2193208.00 I By Patriot Financial Partners III, L.P. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.07 to $5.14 inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. /s/Curt A. Christianssen, attorney in fact for James F. Deutsch 2020-03-11