Third Sector Company
Third Sector Company
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About US

Proudly a Social Purpose Organization

Proudly a Social Purpose Organization

Proudly a Social Purpose Organization

transition help

Founded in 2002, Third Sector Company has become a nationally recognized pioneer in leadership continuity solutions for community impact organizations including charitable causes, professional associations and congregations.


Leadership continuity solutions include interim chief executive and chief development officers, succession planning, executive search resource & referral and professional development, including learning academies for Interim Executives and Board Members.


Based in Seattle, Washington, Third Sector Company service extends across the United States with a network of service allies for recommendation and referral.

We Contribute to Community Impact

Proudly a Social Purpose Organization

Proudly a Social Purpose Organization

Third Sector Company is driven by five forces that shape current and future programming:


  • Assuring quality transitional leadership is available on-demand to the nonprofit sector when it’s needed most.
  • Reducing avoidable executive attrition that can be costly to organizations and careers.
  • Edifying a culture of leadership succession that supports and develops people to serve a common mission.
  • Facilitating successful nonprofit executive hiring processes that help community impact organizations achieve success with their next leader.
  • Fostering a pipeline of future talent to sustain nonprofit organizations and their causes.

Taking Community Impact Organizations to Higher Ground in Their Service to Others


Founded by the former senior vice president for community development at United Way of Greater Los Angeles in association with nine seasoned nonprofit executives with extensive experience in serving diverse communities, Third Sector Company was created to “foster a continuity of leadership for the nonprofit sector.” 

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Meet the Team

Jeffrey R. Wilcox, CFRE

Jeffrey R. Wilcox, CFRE

Jeffrey R. Wilcox, CFRE

President & Chief Executive Officer

Seattle, Washington

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Kristin Baur

Jeffrey R. Wilcox, CFRE

Jeffrey R. Wilcox, CFRE

Senior Program Coordinator - Interim Development Directors Academy

Gig Harbor, Washington

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Randy Brinson

Jeffrey R. Wilcox, CFRE

Joan Baumgartner Brown

Senior Program Strategist – Leadership Succession Services

Seattle, Washington

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Joan Baumgartner Brown

Joan Baumgartner Brown

Joan Baumgartner Brown

Chief Operating Officer

Senior Program Strategist – Interim Executive Resourcing & Referral

Fort Wayne, Indiana

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Bonita Duncan

Joan Baumgartner Brown

Bonita Duncan

Senior Program Strategist - National United Way Interim Leadership Roundtable

Lebanon, New Jersey

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Ellia Harris

Joan Baumgartner Brown

Bonita Duncan

Senior Program Strategist – Professional Services Network

Seattle, Washington

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Liz Heath

Erin Rodenbiker

Sharon Howe

Senior Program Strategist – Small  Nonprofits Executive Transitions

Tacoma, Washington

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Sharon Howe

Erin Rodenbiker

Sharon Howe

Senior Administrative Strategist – Interim Executive Customer Relations

Edmonds, Washington

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Erin Rodenbiker

Erin Rodenbiker

Erin Rodenbiker

Senior Program Strategist – Communications & Marketing

Glasgow, Scotland

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Erick Seelbach

Erick Seelbach

Erin Rodenbiker

Senior Program Strategist - Nonprofit Leadership Continuity Solutions - Pacific Northwest

Tacoma, Washington

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Heyward Watson

Erick Seelbach

Heyward Watson

Senior Program Strategist – Diversity, Equity, Inclusion and Belongingness

Seattle, Washington

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Kelly Zelenka

Senior Program Coordinator - Succession Planning Consultation & Training

St. Louis, Missouri

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MEET OUR INTERIM PEER ADVISORS & INTERIM ACADEMY FACULTY

Kristin Barsness

Kristin Barsness

Kristin Barsness

Peer Advisor & Academy Faculty Member

Tacoma, Washington

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Keith Barsuhn

Kristin Barsness

Kristin Barsness

Peer Advisor & Academy Faculty Member

Marietta, Georgia

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Jan Cohen

Kristin Barsness

Marc Haupert

Peer Advisor & Academy Faculty Member Emeritus

San Carlos, California

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Marc Haupert

Elaine Himelfarb

Marc Haupert

Peer Advisor & Academy Faculty Member

Los Angeles, California

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Elaine Himelfarb

Elaine Himelfarb

Elaine Himelfarb

Peer Advisor & Academy Faculty Member

San Diego, California

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Tim Kittleson

Elaine Himelfarb

Elaine Himelfarb

Peer Advisor & Academy Faculty Member

Los Angeles, California

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Joan McBride

Joan McBride

Joan McBride

Peer Advisor & Academy Faculty Member

Santa Ana, California

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Rachel Morse

Joan McBride

Joan McBride

Peer Advisor & Academy Faculty Member

Anchorage, Alaska

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David Nicole

Joan McBride

Terry Pottmeyer

Peer Advisor & Academy Faculty Member

Fort Wayne, Indiana 

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Terry Pottmeyer

Shailushi Ritchie

Terry Pottmeyer

Peer Advisor & Academy Faculty Member Emeritus

Seattle, Washington

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Karin Sabey

Shailushi Ritchie

Shailushi Ritchie

Peer Advisor & Academy Faculty Member

Columbus, Ohio 

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Shailushi Ritchie

Shailushi Ritchie

Shailushi Ritchie

Peer Advisor & Academy Faculty Member

Chicago, Illinois

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Janet Schulman

Deborah Thompson

Lindsay Shields

Peer Advisor & Academy Faculty Member

Los Angeles, California

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Lindsay Shields

Deborah Thompson

Lindsay Shields

Peer Advisor & Academy Faculty Member

Long Beach, California

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Deborah Thompson

Deborah Thompson

Deborah Thompson

Peer Advisor & Academy Faculty Member

Albuquerque, New Mexico 

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Amy Wasser

Heyward Watson

Deborah Thompson

Peer Advisor & Academy Faculty Member

Bellevue, Washington 

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Anne Wilson

Heyward Watson

Heyward Watson

Peer Advisor & Academy Faculty Member

San Francisco, California 

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Heyward Watson

Heyward Watson

Heyward Watson

Peer Advisor & Academy Faculty Member

Seattle, Washington

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MEET SERVICE ALLIES

Tim Davis

David Harris

David Harris

Service Ally – Glick Davis & Associates 

Executive Search

Nashville, TN

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David Harris

David Harris

David Harris

Service Ally – Interim Executive Solutions

Interim Executive Engagement

Boston, Massachusetts

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Marc Haupert

Nancy Jackson

Nancy Jackson

Executive Advisor & Service Ally – FindALeader

Executive Search

Los Angeles, California

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Nancy Jackson

Nancy Jackson

Nancy Jackson

Service Ally -  Eos Transitions 

Retiring Executive Support

Boston, Massachusetts

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Interim of the Year

Rebecca Lane Named 2023 Nonprofit Interim Executive of the Year

Rebecca Lane has not only left her mark on environmental, educational, housing, business, justice, food, and health causes throughout the Pacific Northwest, her work has also demonstrated the impact of strategic leadership to nonprofits in transition. For outstanding contributions to the interim executive profession, Lane has been awarded Nonprofit Interim Executive of the Year by Third Sector Company. 


"Rebecca is particularly deserving of the award for 2023 because she was Interim Executive Director of Community School of West Seattle at the time of the Uvalde, Texas, shooting and was faced with significant workplace trauma as parents, faculty and young children dealt with the realities of a school shooting involving small children," said Jeffrey Wilcox, president and CEO of Third Sector Company, a pioneer in leadership continuity solutions for community impact organizations. 


Lane was named interim executive director at Community School of West Seattle at a time when people were redefining work and home life following COVID and the amount of gun violence taking place on school campuses was on the rise. One month after Lane assumed her position, a national tragedy unfolded at an elementary school in Uvalde, Texas.

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Interim of the Year Award

Past Award Winners:

  • 2022: Anne Wilson
  • 2021: Kathy McCarrell
  • 2019: Deb Merle
  • 2018: Les Stocker
  • 2016: Mark Crawford
  • 2015: Joan McBride
  • 2014: Joan Van Hooten
  • 2013: Jerry Kappel and Carole Zavala
  • 2012: Ina Frank
  • 2011: Kathleen Buehler
  • 2010: Tim Kittleson
  • 2009: Ron Van Winkle
  • 2008: Lindsay Shields
  • 2007: Marc Haupert
  • 2006: Janet Schulman
  • 2005: Gabrielle Hass
  • 2004: Alice Klein

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