John Haag

John Haag

John Haag - Turnaround-Focused San Francisco Consultant

I'd like to share my expertise

Currently employed at Callister Haag Consulting


Previous: Columbia University



    An experienced San Francisco business consultant, John Haag leads CallisterHaag as managing partner, in which role he offers transformational support to venture companies facing operational and financial challenges. Known for developing original solutions to complex problems, John Haag consistently finds strategies that boost results and meet client needs. He is experienced in guiding the bankruptcy process, as well as in negotiating the restructuring of agreements with venture capital firms. Serving in board capacities with growth companies, Mr. Haag provides hands-on, in-depth intelligence that lays out the risks and rewards associated with various courses of action. He also provides venture capitalists with an accurate assessment of portfolio companies in which they are considering investing. John Haag has several family connections with the US Armed Forces. He was born in Karachi, Pakistan, at the base where his father was stationed. His father retired from active duty at the end of the Vietnam War, and his brother-in-law has a place in history as the last POW returned by the North Vietnamese following the conflict. He applies lessons he learned from his exposure to the military in his work driving company growth trajectories while noting that business often works at a pace in which there is no time to practice the teamwork that drives operations such as the Navy SEALS.



At Callister Haag Consulting

From 2013 to Present


  • Accounting
  • Investment Banking
  • Leadership
  • Venture Capital

Langues parlées

  • English