Meet our team
Arnold Ventures is a group of more than 100 passionate people from all walks of life who feel a deep urgency to help people in need. Laura and John established the Laura and John Arnold Foundation in 2010 with a straightforward mission: to improve lives through evidence-based solutions. As co-founders, Laura and John actively engage in the organization’s overall direction and daily execution. Laura is an attorney and a former oil company executive. John is an investor. They have three children and reside in Houston, Texas.
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Eboni Graham
Social Media Manager

Dina Grove
Senior Counsel

Lauren Hardy
Grants Manager

Dylan Hayre
Director of Criminal Justice (he/him)

David Hebert
Communications Manager

Chris Hensman
Director of New Programs

Alexa Herzog
Criminal Justice Manager
Jeffrey Holliday
Advocacy Manager

Juliene James
Vice President of Criminal Justice (she/her)

Sebastian Johnson
Advocacy Chief of Staff

Erin Jones
Health Care Analyst

Nadege Joseph
New York Office Manager and Lead Executive Assistant

Hannah Kahn
Vice President of Data, Systems, and Technology

Walter Katz
Vice President of Criminal Justice

Juliana Keeping
Communications Manager

Hunter Kellett
Health Care Director, Payor Reform

Cybele Kotonias
Director of Criminal Justice

Marc Krupanski
Director of Criminal Justice - Policing

Emma Liebman
Health Care Analyst (she/her)

Lindsey Lovel Heidrich
Criminal Justice Manager, Projects (she/her)

Victoria (Torie) Ludwin
Communications Manager (she/her)

Kevin Madden
Executive Vice President of Advocacy

Sam Mar
Executive Vice President of Communications & External Affairs

Alexius Marcano
Manager of Criminal Justice Research
Christopher McClure
Finance Manager

Morgan McGrath
Health Care Analyst

Kelly McManus
Director of Higher Education

Roshni Mehta
Advocacy Analyst

Rhiannon Meyers Collette
Communications Manager

Mark E. Miller
Executive Vice President of Health Care