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Our Mission
& Team


Trinity Park Conservancy is a nonprofit dedicated to the stewardship of Dallas’ largest public green space, the 10,000 acres of the Trinity River. Believing that the River is the natural gathering place for all Dallas residents, the Conservancy is committed to bringing people together to share their ideas, learn more about the possibilities and habitat of the area, and to assist in making it a more accessible space. In 2018, the Conservancy was selected to design, construct and maintain the future Harold Simmons Park in a private/public partnership with the City of Dallas and the Trinity River Corridor Local Government Corporation. Trinity Park Conservancy is dedicated to continuing conversations in the community throughout the Park development process.


values listed in circles

Commitment to Community

The Dallas community is inextricably a part of our mission and necessary in making Harold Simmons Park successful — a Park that unites our city across the Trinity River when the river has historically divided us. Our vision for the future is one in which the Park contributes to a more just and thriving Dallas.

Being a community means that all people — of all races, ethnicities, ages, genders, sexual orientations, religions, health and ability statuses, or any other considerations — have the right to access, dignity, and value; have the right to inclusively participate in all dimensions of civic and economic life; and can achieve their full potential.

Our Accountability

Trinity Park Conservancy is committed to accountability and transparency. Our Form 990, our audited financial statements and our whistleblower policy give us the opportunity to share how our careful and effective use of donations funds impactful projects. Data on our nonprofit can be found on Guidestar and Charity Navigator.

Board of Directors

  • Deedie Rose // Board Chair
  • Marguerite Hoffman // Vice-Chair
  • Walter Elcock // Secretary, Governance Chair
  • Cris Jordan (interim) //Treasurer, Finance Chair
  • Robert Witte // Co-Programming Chair
  • Cris Jordan // Co-Programming Chair
  • Jeanne Phillips // Communications Chair
  • Rebecca Fletcher // Development Chair
  • Lucilo Peña // Design Advocacy Chair
  • Garrett Boone // Conservation Chair
  • Nicole Acosta-de la Torre
  • Sulman Ahmed
  • AJ Barkley
  • Tynesia Boyea-Robinson
  • Peter Brodsky
  • Laura Bush
  • Don Glendenning
  • Darren James
  • Roy Lopez
  • Joe May
  • Marc Nivet
  • Carolyn Rathjen
  • Nancy Cain Robertson
  • Byron Sanders
  • Emily Summers
  • Clyde Valentín
  • Kelvin Walker

TPC Staff Contacts

Tony Moore, President and CEO

John Trahan, CFO

Brian Lapidus, CMO

Lindsay Abernethy, CAO

Marcus Shropshire, Director of Capital Projects

Shayna Stonom, Executive Assistant to the CEO

Sam Acosta, Community Engagement, Director

John Hill, Community Engagement, Director

Patricia Johnson, Advancement Manager

Tiffany Vega, Director of Philanthropy

Maryam Baig, Programming & Experience Manager

Lariza Moreno, Marketing & Communications Manager

Jimena Vivanco, Conservation Manager

Affiliate Groups

High Line Network. Learn more at http://network.thehighline.org


We respect your privacy and will not sell or trade users’ or donors’ personal or confidential information to any other parties without express permission.

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