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Your Team

Our business banking team is comprised of some of the most experienced bankers in the industry. Bank of San Francisco clients benefit from their in-depth understanding of various industries and their unparalleled expertise in working with a wide range of business banking products and services.

Katherine Zinsser, Senior Vice President

Katherine has 30 years of banking experience including middle market lending, credit administration, and business banking. At Bank of San Francisco, she has specialized in working with entrepreneurs to finance small business acquisitions, fund growth through working capital loans and lines of credit, and refinance or purchase real estate and equipment. She currently leads the Bank’s SBA Government Guaranteed Lending team.

Tim Rosenthal, Senior Vice President

Tim has 20 years of banking experience in all aspects of commercial real estate, middle market lending, personal, and mortgage banking. He heads up the Bank’s dental practice lending group and is responsible for developing new client relationships, while servicing existing ones.

Ike Ogata, Senior Vice President

Ike has over 30 years of banking experience, including small business and middle market lending, commercial real estate lending, and personal banking. He often serves as the banker for clients who are entrepreneurs and heads up the Bank’s work with veterinary practices, law firms, and food industry clients.

Zachary Petry, Loan Officer

A member of the Government-Guaranteed Lending team, Zachary Petry specializes in helping entrepreneurs finance the growth of their business, acquisitions of equipment, and real estate purchases through SBA and California State Guarantee programs. Prior to joining Bank of San Francisco, he worked with a non-profit micro-lender. With this background, Zachary also focuses on serving the banking needs of non-profit organizations.

Paul Barenfus, Senior Vice President

With his passion for community banking, client services, and entrepreneurialism, Paul has spent more than 15 years serving the banking needs of closely held Bay Area-based businesses and their owners and senior managers. A long-time resident of San Rafael and an experienced banker in the North Bay market, Paul spearheads the Bank's development and servicing of client relationships in this area.