Vice President & Portfolio Manager

Jim Callinan graduated from Harvard College (B.A. Economics), New York University (M.S. Accounting) and Harvard Business School (M.B.A.). Mr. Callinan holds the Chartered Financial Analyst designation.

Prior to joining Osterweis Capital Management in 2016, Mr. Callinan was the CEO of Callinan Asset Management and Portfolio Manager of the Emerging Growth Partners, LP. Before that, he was Co-Founder & Chief Investment Officer at RS Investments and founded the RS Concentrated Small Cap Growth investment strategy. He also co-founded the RS Growth Group LLC at Robertson Stephens Investment Management in 1996 and managed the RS Emerging Growth Fund from 1996 until 2010.

He began his career at Putnam Investments as an equity research analyst in 1987 and served as portfolio manager for the Putnam OTC Emerging Growth Fund from 1994 to 1996.

Mr. Callinan is a member of the Bay Area Make-A-Wish Foundation Board of Trustees and the Jumpstart Northern California Advisory Board, the Weatherbie Capital Advisory Board, the President’s Committee on Communication for Harvard University and the Friends of Harvard Football Board.

Mr. Callinan is a principal of the firm and a Portfolio Manager for the emerging growth strategy.

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