Nathan Owen Rosenberg Sr.

Founding Partner – California

An executive’s executive with an entrepreneurial mindset, Nathan Owen Rosenberg not only co-founded Insigniam, but also founded two other successful enterprises and has served as chief executive of four corporations.

His expertise and experience gained from working with more than 70,000 people during his 28 years in consulting has resulted in measurable Breakthrough Results, enterprise innovation, and leadership transformation.

Nathan’s innovation consulting with a well-known consumer goods company produced more than $200 million in new revenue in the first year. He advised a leading global clothing and lifestyle company to take a new approach in updating their ERP system, reducing the upgrade time in half.

He consulted with the EVP of Global Operations, managers and union leadership at an American aerospace manufacturing company, resulting in reduced costs, improved quality and increased throughput in a 10-month timespan. Employee satisfaction increased as well, rising from the bottom quartile to the seventh decile of all manufacturers.

Nathan led a consulting team in a three-and-a-half year engagement to transform an old-line computer manufacturing company into an information services company with relatively little disruption. During the engagement, shareholder value increased more than 600 percent compared to falling share prices in the previous three years.

Prior to co-founding Insigniam, Nathan was chairman and president of a manufacturing company specializing in high-technology breathing devices. He led the company’s transformation and turnaround, tripling the company’s value in four years by regaining contracts with the U.S. military and greatly expanding demand from scuba divers.

He was also an executive in the West Coast’s largest minority-owned advertising agency and a managing partner in a national real estate investment firm. As a young man, he was an officer and aviator in the United States Navy and served as the secretary of defense’s executive support officer and national security advisor to the U.S. senate majority leader.

A devoted family man, Nathan enjoys spending time with his wife, Karen, and holidays and informal family reunions with their five grown children and his three brothers and sister. An avid runner and stand-up paddler, he is also a reader of history and thrillers.

He is also a member of the National Association of Corporate Directors.


  • Bachelor of Science, in Management, United States Air Force Academy
  • Master’s course work in Legislative Affairs, George Washington University
  • “IT for Non-IT Executives,” Massachusetts Institute of Technology
  • “Design Thinking Boot Camp,” Stanford University

Awards and Recognition

  • Board member, Bryant Rubber Company
  • Vice president for marketing and executive board member, Boy Scouts of America
  • Immediate past chairman, Orange County Council of the Boy Scouts of America
  • Vice president and board member, Educate Girls Globally
  • Vice president and board member, USAFA Rugby Excellence Group
  • Chairman, Business Week’s CEO & Presidents & CIO Forums in Asia, 1994-1997
  • Flew search and rescue missions in the Caribbean — saved 24 lives and seized five ships containing smuggled drugs, 1975-1978
  • Executive support officer, Secretary and Deputy Secretary of Defense, 1978-1980
  • Awarded the Joint Service Commendation by the Secretary of Defense
  • National defense advisor, U.S. Senate Majority Leader, 1980-1981
  • Silver Beaver, Silver Antelope, and Silver Buffalo honors, Boy Scouts of America

Public Speaking and Service

  • Speaker, The Keck Medical School of the University of Southern California
  • Speaker, The Peter F. Drucker Management Center of the Claremont Graduate School
  • Speaker, The Graduate School of Management of the University of California, Irvine
  • Speaker for 20 consecutive years, The United States Air Force Academy
  • Speaker, National Character and Leadership Symposium
  • Speaker, 2012 National Forum for Character Education
  • Vestryman, St. James Episcopal Church, 1986-1990

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