Our Team


Katherine Klein, Vice Dean

Katherine is the Edward H. Bowman Professor of Management and the Vice Dean of the Wharton Social Impact Initiative. With a passionate commitment to social impact and deep research expertise, Katherine guides WSII’s vision and strategy, partnerships, research, and faculty engagement. An award-winning organizational psychologist, she teaches course on social impact, leadership, organizational change, and research methods. She is a fellow of the Academy of Management, the Society for Industrial and Organizational Psychology, the American Psychological Association, and the Association for Psychological Science. Katherine’s current research focuses on the effects of leadership succession on organizational change and effectiveness. Katherine received her B.A. in Psychology from Yale University and her Ph.D. in Community Psychology from the University of Texas at Austin. She loves spending time with her family and friends, taking exercise classes, traveling abroad (especially to Rwanda), and eating really dark chocolate.

Sherryl Kuhlman, Managing Director

As Managing Director of WSII (and the first full time employee), Sherryl is thrilled with the growth of WSII and social impact interest of students and alumni. Sherryl worked over 10 years at Big Brothers Big Sisters, where she led work in fundraising, marketing, partnership development, and impact assessment. Previously, she was a faculty member at Franklin and Marshall College in Lancaster, where she taught classes in ethics (business ethics, medical ethics, social and political philosophy) and aesthetics. Sherryl has a Ph.D. in Philosophy from the University of Illinois At Chicago and an M.B.A. from the Wharton School of the University of Pennsylvania. She serves on the Board of Investors Circle and the advisory board of the Mentoring Partnership and Resource Center. She is also on the advisory board of the Sixers Innovation Lab and the Sixers Youth Foundation. Despite being an introvert, she enjoys being a co-host for “Dollars and Change” on the Wharton Business Channel on SiriusXM132.

Sandi M. Hunt, Senior Director

As a member of the senior leadership team, Sandi helps to drive the strategy and execution of WSII’s research and student programming. A subject matter expert in gender lens investing, she has co-authored reports including “Four for Women,” “Can Investing in Public Equities Improve the Lives of Women?,” “Project Sage,” and “Project Sage 2.0.” She is a host of the weekly social impact show “Dollars & Change” on SiriusXM132 Business Radio. In addition, Sandi has served as an investment committee member and judge for many impact groups and competitions. Prior to joining WSII, Sandi worked in consulting at Accenture and served as Vice President of Operations at the start up nonprofit Back on My Feet. She graduated with honors from Bucknell University where she studied business, and is currently pursuing her masters in Organizational Dynamics at the University of Pennsylvania.

Yuri Seung, Program Manager

Driven by her passion for creating meaningful impact, Yuri’s career has been rooted in finding new ways to address big challenges. In her role as Program Manager, Yuri leads student programs at WSII, managing these experiential learning opportunities for both graduate and undergraduate students. Before coming to WSII, Yuri worked at the Office of University and Community Partnerships at Drexel University and Bloomberg Philanthropies. As an undergraduate, Yuri studied in Tokyo researching issues affecting women and minorities, and studied Chinese at Middlebury Language Schools. She holds a BA in English and Asian Studies from Temple University, where she graduated with honors. When Yuri isn’t at work, she enjoys nerdy interests like listening to records, science fiction culture, graphic novels, and gaming.

S. Tyler Hoffman, Associate Program Manager

Mixing creativity and practicality to effect change, Tyler’s unconventional career led him right to the Wharton Social Impact Initiative. As Associate Program Manager, Tyler Hoffman brings a high level of customer service, creativity, and resourcefulness to facilitate the administration and execution of WSII projects, events, fellowships, and speakers. After receiving his BA from West Chester University, Tyler served as Theater Director and coordinator for a K-12 training program in the Greater Philadelphia Area and New Jersey. He also helped found a Philadelphia based theatre company and is a previous Actors Equity Association candidate. He brings this varied experience to help grow an increasing number of WSII activities. Tyler can answer all your questions about WSII and give you some excellent pointers on presentation and presence in the classroom and the boardroom. As a resident nerd culture enthusiast, Tyler can be found catching Pokémon, devouring game industry news, and saving the world from his PlayStation one game at a time.

Nisa Nejadi, Communications Manager

A wordsmith with a creative eye, Nisa leads Wharton Social Impact’s marketing and communications. As Communications Manager, Nisa leads and executes a wide range of storytelling projects including web, email, social media, print, and more. Prior to WSII, Nisa worked in recruitment and admissions marketing at Teach For America where, in addition to setting the strategy for campus marketing collateral, she trained the recruitment team on marketing strategies and brand communications. Nisa has also worked in marketing in the corporate sector, planning global product launches at the Estee Lauder Companies and managing U.S.-based marketing for Lierac, a French brand. After receiving her BA in Economics from New York University, she moved to Paris for a year to teach English to elementary school students. She remains an enthusiastic Francophile, and can be found daydreaming about baguettes, cheese, and her next trip to Paris.

Michael Brown

Maoz (Michael) Brown, Associate Director, Research

Michael Brown is the Associate Director of Research at WSII, where he coordinates research on impact investing and social enterprise. His responsibilities include data collection and analysis, synthesizing and disseminating findings, and planning new studies. Michael was previously a research assistant at Chapin Hall, a policy institute focused on improving the well-being of youth and families. He also consulted for the Community Programs Accelerator at the University of Chicago, where he is currently completing a PhD in Sociology. In addition to his work at WSII, Michael contributes to the Urban Institute’s “History of Philanthropy” project, which draws lessons from historical case studies of innovative philanthropy. In his spare time Michael enjoys exploring his new home of Philadelphia (especially its restaurants.)

Raj Sebastian headshot with painting in background. He wears a blue shirt.

Rajith Sebastian, Director, Special Projects, Impact Investing

Rajith Sebastian (Raj) is Director, Special Projects, Impact Investing – at the Wharton Social Impact Initiative. He manages the Wharton Impact Venture Associates program, where he oversees a team that aims to create a best-in-class impact investing vehicle. Raj also oversees the Wharton Africa Growth Partners, a student investment group focused on Africa. Prior to joining Wharton Social Impact Initiative, and during his MBA, Raj worked on raising an Africa focused private credit vehicle, in collaboration with a large global bank. Raj has 12 years of investment banking and private equity experience, primarily across Sub Saharan Africa and China, and has worked on over $8bn worth of transactions across these markets. He has worked in senior investment banking roles at Standard Chartered Bank and Nedbank, was a VP at Chinavest (a Shanghai based PE group), and started off his career at the Monitor Group. He has a Bachelor of Business Science degree from the University of Cape Town, an MBA from the Wharton School, and is a CFA Charterholder. He lives in Philly, and loves to spend time with his wife and two young boys.