SBN Welcomes New Board of Directors Members

The SBN Board of Directors is excited to welcome new board members. SBN members voted to approve these additions at the 2018 Annual Members Meeting. Below are short bios from the candidates.


Allegra Derengowski: Birchtree Catering

Allegra is a self-taught entrepreneur and event planner who has grown Birchtree Catering through word-of-mouth marketing, a strong commitment to quality food and customer service, and great relationships with venues and vendors in Philadelphia. In 2016 she completed two entrepreneurial growth programs: the SBA-funded “Scale-Up Philadelphia” through The Enterprise Center, and the “Goldman Sachs 10,000 Small Businesses” through the Community College of Philadelphia. She is now on the Advisory Board for Scale-Up, and acted as an SBN ambassador throughout 2017


Barrie E. Litzky: Charles D. Close School of Entrepreneurship at Drexel

Barrie Litzky received her Ph.D. in organizational sciences and psychology from Drexel University and taught for the past 18 years at Penn State Great Valley where she created courses in sustainability and social entrepreneurship and led the effort to create a graduate certificate in Sustainable Management Practices. At present, Barrie is an associate professor of entrepreneurship in the Charles D. Close School of Entrepreneurship at Drexel. Excited to be at The Close School, Barrie is currently developing and teaching courses in social entrepreneurship and sustainability, resilience and failure, and mindfulness. Barrie has been an active member of SBN since 2005 and has encouraged both Penn State Great Valley and now Drexel’s Close School to be Level-4 Members.


Mo Mankling: U.S. Federation of Worker Cooperatives

Mo Manklang is the Director of Communications of the U.S. Federation of Worker Cooperatives. She has been working on co-ops and social impact organizing for the past twelve years in Philadelphia, with organizations such as the Philadelphia Area Cooperative Alliance, Generocity.org, The Bechdel Test Fest, and the U.S. Department of Arts and Culture. A native Philadelphian, Mo is dedicated to supporting socially conscious businesses in this city and around the country.


Sara Poindexter: Rodriguez Consulting, LLC

Sara is a Professional Engineer with over 15 years of experience in civil site design and utility projects, and currently oversees all aspects of Rodriguez Consulting’s operations and procedures as COO. Her areas of expertise includes civil site design/permitting, subsurface utility engineering, stormwater management, erosion and sediment control, roadway design and permitting, and municipal representation. Sara has a passion for green stromwater infrastructure and urban communities, and has been an active member of SBN since 2014, during which time she has served as Committee Chair of SBN’s GSI Partners’ Plan Review Committee.


Tiffany Rolfing: Idea Broker

Tiffany is a maker, mover, and innovator focusing on delivering growth strategies, innovation, and tangible outcomes in public and private settings through foresight, persistence, and creative social-impact design. Idea Broker, her business design consultancy, guides clients in creating successful and pragmatic business development implementation plans for new and existing markets. Her experience is rooted in over fifteen years of policy, energy efficiency, construction, and community programing design while working with commercial utility corporations, local development organizations, private and public real estate developers, and national associations.


Click here to learn more about SBN’s Board of Directors.