Our Team


Jeffrey Hollender – CEO & Co-founder, ASBC

Jeffrey Hollender is co-founder and former CEO of Seventh Generation, which he built into a leading natural product brand known for its authenticity, transparency, and progressive business practices. Hollender is currently the founder of Sustain Natural, that developed and markets sustainable feminine care products for women. He is also Adjunct


David Levine
Co-founder and President

David is the co-founder and president of the American Sustainable Business Council. He has worked as a social entrepreneur for over 30 years focusing on the development of whole systems solutions for a more sustainable society through building strategic partnerships and broad stakeholders initiatives. Previously, he was the founding

Profile Kathleen Hutton

Thomas Oppel
Executive Vice President of Policy

Thomas Oppel has more than three decades of experience in management, communications, policy and political campaigns.

From 2009 to 2017, he served as Chief of Staff to the 75th Secretary of the United States Navy, Ray Mabus, responsible for overseeing the development, execution and communication of the Secretary’s policies, goals and objectives throughout the Navy and Marine Corps, the Pentagon, the federal


Tony Mazza

Tony Mazza joined ASBC as its Chief Administration Officer. Tony is a New York-licensed attorney primarily engaged in IT Operations, IP issues, and business process improvement. He provides thought- leadership on financial and cyber-related issues and has led major initiatives involving IT and business process re-designs and model


Ali-Reza Vahabzadeh
Chief of Staff to CEO & Co-founder

Ali-Reza “A.R.” Vahabzadeh is a seasoned global business development, investor relations and marketing professional, having representing such companies as Morgan Stanley, Citigroup and J.P. Morgan Chase on a global basis. He is a graduate of The Elliott School of International Affairs at The George Washington University in Washington, D.C. He is based in New York City.


Valerie Forbai
Associate Director of Membership

Valerie joins ASBC with a background in trade association sales and membership development. She previously worked in collegiate publishing and advertising, the intelligent transport systems arena and in the software and services space. With a strong interest in the nonprofit industry, she volunteers her time with a local nonprofit while continuing


Kathleen Hutton
Senior Manager, Web Content and Technology

Kathleen has over 16 years of non-profit experience working for environmental and university institutions. She has held various analytical, technical, and stewardship positions within development, communications, and marketing departments. Before joining ASBC, Kathleen was the Website and Social Media Manager for Manomet


Bob Keener
Deputy Director of Public Relations

Bob is responsible for setting ASBC’s press strategy and communications. He directs and implements all press-related activities; oversees development of press materials, op-eds and columns; and conducts training and coordination of media spokespeople. He has been working in issues advocacy for 12 years after a career in the private sector, first


John O’Neill
Senior Analyst, Tax Policy

John has 12 years of tax-related experience, including five years as a tax and budget aide to Sen. Ron Wyden of Oregon, the ranking Democrat on the Senate Finance Committee.  For seven years, he worked at the accounting firm Deloitte, educating its partners and clients on federal tax policy changes. Prior to that, he worked as a journalist for ten years,