Our board

SumOfUs is governed by a board of directors who are ultimately accountable for the work that we do. Our board manage our Executive Director, are responsible for our financial health and ensure we operate within the rules set out for us as a United States registered 501(c)4 organization.

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Emma Ruby-Sachs, Executive Director
Chicago, IL
Emma Ruby-Sachs is a writer, lawyer and the Executive Director of SumOfUs, a global movement of over 15 million members worldwide. She is the author of The Waterman’s Daughter, a literary novel set in South Africa, released in 2011 and her writing has been published in The Guardian, The Nation, Huffington Post and other international outlets. She previously was the Deputy Director at Avaaz, practiced constitutional appellate law and administrative law and worked on issues of wrongful arrest and wrongful conviction in Canada. She is a graduate of Wesleyan University and University of Toronto Faculty of Law and currently lives in Chicago, IL with her partner, Jane Saks and their daughter.
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Hafeezah Abdullah, Chief Donor Relations Officer
Oakland, CA
Hafeezah Abdullah is the Chief Donor Relations Officer for SumOfUs, where she directs donor engagement and institutional advancement. She is a fundraiser, event producer, and strategist with more than a decade of experience advising nonprofits and political campaigns. She is a graduate of the University of Maryland-College Park, Justice Democrats Fellow, and Board Vice-Chair for Good Energy Collective.
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Emma Prest, Secretary
London, United Kingdom
Emma Prest is Chief Technology Officer at the Organized Crime and Corruption Reporting Project, an investigative journalism non-profit focused on cross-border crime and money laundering. Prior to that Emma was Executive Director of DataKind UK where she led a community of 1000+ pro bono data scientists. She has worked for Tactical Tech, the Campaign for Freedom of Information and Amnesty International UK.
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Ismael Savadogo, Treasurer
Washington D.C., United States
Ismael Savadogo is the Chief Financial Officer at Color Of Change, the largest online racial justice organization in the US. Ismael previously served as Chief Financial Officer and Vice President of Operations at Greenberg Quinlan Rosner Research, a public opinion research and strategic consulting firm where he oversaw the growth and global expansion of the organization. He also worked in Francophone West Africa as the Chief Financial Officer and Special Advisor for COP-EL helping to restore and maintain the distribution of affordable electricity to many underprivileged communities. Earlier in his professional career he served as the Controller at Hytech Industries. 
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Preethi Herman, Board Member
Preethi Herman established Change.org as a people’s platform in India - growing it from a user base of less than 200,000 users to a current 8 million active citizens taking action on various social change issues across the country. As somebody who had not used a computer by herself until she was 18, Preethi Herman is one of the (rare) women leaders at the forefront of the ‘technology for social change’ space. In her career spanning 15 years and hundreds of campaigns, Preethi has led teams that have worked on incredible campaigns proving that regular citizens can create transformative change using technology. Recently, her team’s work ensured sweeping changes in the Indian Government policy which will now recognise single mothers as sole guardians in their children’s passports. Under Preethi’s lead, the Change.org India team has brought the issue of excessive rates of Caesarean surgeries into national headlines and made it into a movement touching the lives of millions of Indian women. This lies at the heart of Preethi’s core vision; the power for people coming together to create change and leveraging technology in a decentralised structure of civil leadership. It is a vision she hopes to realise as part of her work, career and life. She is also founder of ‘Create Change Foundation’ and has launched ‘Campaign Academy India’.
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Tanya O'Carroll, Board Member
London, UK
Tanya O'Carroll is co-founder and director of Amnesty Tech, a globally distributed team of advocates, researchers and technologists at Amnesty International focused on ensuring that advancements in technology benefit, rather than erode, rights. In her eight years at Amnesty, she has built up a programme of work to ensure accountability when it comes to issues such as surveillance, big data, artificial intelligence, violence against women online and the power of Big Tech.
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Tate Hausman, Chair of Board
New York, United States
Tate Hausman is the Director of the Millions of Jobs Coalition, a new progressive group fighting for equitable, clean, 21st Century investment in America's aging infrastructure. Before starting the Coalition, Tate served as the Managing Director of the Analyst Institute, an innovation lab that develops new tools and strategies for progressives. He was also the Managing Director at MoveOn.org, where he ran experimental voter contact programs that helped progressives rack up victories in 2012. Tate has directed a number of other national political operations, such as Vote Today Ohio, a voter mobilization effort that helped swing Ohio to Barack Obama; and Slam Bush, a hip-hop voter registration drive in 2004. He has worked for two Congressional campaigns, one gubernatorial, and multiple state, municipal and issue campaigns. Tate is the founding Board Chair at SumOfUs, and is on the board of a small, progressive, family philanthropy called the R&R Foundation.
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Zeina Alhajj, Board Member
Beirut, Lebanon
Zeina Alhajj is currently the Executive Director of Greenpeace MENA, a regional office for Greenpeace that operates in the Middle East and North Africa. She has 20 years of experience in creative campaigning, communications, political and policy development, fundraising, and public engagement and mobilisation on a global level. Zeina is an activist by heart and has worked on social issues ranging from global electoral laws and environmental policies to dealing with war aftermath. She volunteered for Greenpeace when the organisation was first setting up offices in the Middle East, and became their spokesperson in the Arab World. For many years, she shaped Greenpeace’s global strategies and led many of its creative campaigns challenging global corporates within the electronics and textile industries, as well as global food companies. Zeina has a notorious laugh that can raise a smile on a rainy day in Amsterdam, where she lived for 12 years. Now she enjoys the sun of Istanbul.