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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![Headshot of Roxanne Almaraz](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/8405/Roxanne-190521-EXECUTIVE-PORTRAITS-2019-HOU-2-0857_R.webp)
Roxanne Almaraz
Chief Operating Officer, General Counsel and Corporate Secretary
![Headshot of Charlie Anderson](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/381930/240312-ARNOLD-VENTURES-DC-1294-Charlie-Anderson-WR.webp)
Charlie Anderson
Executive Vice President for Infrastructure
![Headshot of Laura and John Arnold](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/7021/fullsizeoutput_b8.webp)
Laura and John Arnold
Founders and Co-Chairs
![Headshot of Elizabeth Banks](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/6972/fullsizeoutput_22.webp)
Elizabeth Banks
Chief Financial Officer and Treasurer
![Headshot of George Callas](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/226438/George-Callas_211108-EXECUTIVE-PORTRAITS-DC-0521_R_2022-01-26-204455_rmmm.webp)
George Callas
Executive Vice President of Public Finance
Jennifer Doleac
Executive Vice President of Criminal Justice
![Headshot of Mark E. Miller](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/226439/Mark-Miller_211108-EXECUTIVE-PORTRAITS-DC-1115_R_2022-01-26-204552_xwym.webp)
Mark E. Miller
Executive Vice President of Health Care
![Headshot of Justin Milner](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/324078/230227-Justin-Milner-AV-DC-1074_ED_v3_2023-04-12-160716_trei.webp)
Justin Milner
Executive Vice President of Evidence and Evaluation (he/him)
![Headshot of Jennifer Nelsen](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/6973/fullsizeoutput_25.webp)
Jennifer Nelsen
Chief People and Culture Officer (she/her)
![Headshot of Kelli Rhee](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/7025/fullsizeoutput_c8.webp)
Kelli Rhee
President and Chief Executive Officer
![Headshot of Kirby Smith](https://craftmediabucket.s3.amazonaws.com/uploads/_900x1200_crop_bottom-center_none/9531/Kirby-Smith-190919-EXECUTIVE-PORTRAITS-2019-HOU-3-0160_R.webp)
Kirby Smith
Executive Vice President of Strategy and Programs