Third Sector Company has been a national pioneer in the study and advancement of strategic transitional leadership for nonprofit organizations with service to over 800 organizations, professional and trade associations as well as training and support to over 200 independent interim executives.

Starting in 2002, a group of about 40 nonprofit executives from leading organizations, both large and small, from throughout the Greater Los Angeles area gathered to talk about the growing amount of turnover occurring among their peers. At the same time, the funding community was realizing the nonprofit sector was ill-prepared for executive transitions complicated by few nonprofit organizations having directed activities aimed at succession planning, executive retention, and talent pipelines cultivating future staff and board leaders.

Third Sector Company - Founding Community in 2002

With a mission statement of “leadership continuity for the nonprofit sector,” the group formed a professional community, under the leadership of Jeffrey R. Wilcox, President & Chief Engagement Officer. Now serving the United States and Canada through online training programs, virtual community groups, and on-demand online consultations having helped over 700 nonprofits in two nations, Third Sector Company stands committed to further evolve its founding principals in unique and impactful ways that lift the nonprofit sector to higher ground in its service to others.


Meet Our Interim Advisors & Academy Faculty


Kristin Barsness

Peer Advisor & Academy Faculty Member

Tacoma, Washington

Keith Barsuhn

Peer Advisor & Academy Faculty Member

Marietta, Georgia

Joan Baumgartner Brown

Peer Advisor & Academy Faculty Member

Fort Wayne, Indiana

Jan Cohen

Peer Advisor & Academy Faculty Member Emeritus

San Carlos, California

Marc Haupert

Peer Advisor & Academy Faculty Member

Los Angeles, California

Elaine Himelfarb

Peer Advisor & Academy Faculty Member

San Diego, California

Tim Kittleson

Peer Advisor & Academy Faculty Member

Los Angeles, California

Joan McBride

Peer Advisor & Academy Faculty Member

Santa Ana, California

Rachel Morse

Peer Advisor & Academy Faculty Member

Anchorage, Alaska

David Nicole

Peer Advisor & Academy Faculty Member

Fort Wayne, Indiana

Terry Pottmeyer

Peer Advisor & Academy Faculty Member Emeritus

Seattle, Washington

Karin Sabey

Peer Advisor & Academy Faculty Member

Columbus, Ohio

Shailushi Ritchie

Peer Advisor & Academy Faculty Member

Chicago, Illinois

Janet Schulman

Peer Advisor & Academy Faculty Member

Los Angeles, California

Lindsay Shields

Peer Advisor & Academy Faculty Member

Long Beach, California

Deborah Thompson

Peer Advisor & Academy Faculty Member

Albuquerque, New Mexcio

Amy Wasser

Peer Advisor & Academy Faculty Member

Bellevue, Washington

Anne Wilson

Peer Advisor & Academy Faculty Member

San Francisco, California

Heyward Watson

Peer Advisor & Academy Faculty Member

Seattle, Washington


Our Approach


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Become an Interim Executive

Training and supporting interim leaders with tools and peer support are the core competencies of the Interim Executives Academy. Learn how to transform nonprofit organizations in a short time and how to grow a career as an interim executive leader.

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Engage an Interim Executive

The graduates of Interim Executives Academy are available to provide vetted, highly-trained interim leadership to your nonprofit organization. From the training and experience at Interim Executives Academy, the graduates are able to provide a series of protocols and deliverables to ensure a successful interim engagement. They will also have access to mentorship and coaching through our community of interim leadership practice.

At the conclusion of the Academy, aspiring or practicing interim chief executives will be given a Certificate of Completion signifying participation in a comprehensive learning program and affiliation with one of the largest networks of trained interim executives in the nation. Graduates of the Academy also will be awarded a digital badge for use in resumes and social media.

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