John Haag

John Haag brings more than three decades of experience in the financial sector to his role as the managing partner at CallisterHaag, a consulting firm in San Francisco. Possessing a keen eye for detail, John Haag applies his extensive knowledge of accounting, investment banking, and financial management to provide clients with consulting services. Under Mr. Haag’s leadership, CallisterHaag consults with chief executive officers, venture capital investors, and other business executives to guide their companies through financial crises.

Mr. Haag began his career in public accounting and branched out into other areas. His early roles enabled him to build a solid foundation in the financial and organizational skills necessary to succeed.

Mr. Haag previously worked for Presidio Partners, where he learned about the biotechnology industry through the company’s investments in numerous biotech initiatives. He subsequently utilized the knowledge he had acquired to create investment opportunities for venture capitalists and investors.