Halcyon

Co-founded Halcyon in 2014 and served as CEO until December 2023.

Yvonne Forest serves as an Industry Advisor to ICI Fund and as Director of Houston Water, where she oversees the operation and maintenance of the City of Houston's regional water and wastewater utility systems, including regulatory compliance, infrastructure planning, and operations support. She manages a staff of over 1,700 and a combined capital and operations budget exceeding $657 million. Before entering public service, she worked as an engineer in the private sector for 15 years on environmental regulatory compliance, and she holds a Bachelor of Science in Chemical Engineering from the University of South Carolina.

Agricultural expert with academic background from Sokoine University of Agriculture and postgraduate diploma in agricultural science.

An entrepreneur with experience in project management, business development, and operations, known for strong communication skills.

Medical doctor candidate at George Washington School of Medicine focused on the intersection of medicine, technology, and entrepreneurship.

Multimedia artist, educator, and cultural organizer whose work explores the intersection of art, culture, and community.

Adam Caplan is Investment Manager at Halcyon, a role he began in May 2025 within the organization's Programs team, having spent nearly three years developing and running curricula for Halcyon's residential accelerator programs. He began his career at the Aga Khan Foundation, where he helped establish its first impact investment fund, and subsequently led research initiatives at global incubators and accelerators while mentoring founding teams across the US, South Asia, and East Africa. His current work focuses on curriculum, investor networks, and facilitating fundraising for impact-driven founders and alumni.

Engineer, designer, and technology leader with over 20 years of experience across energy, consulting, and health tech sectors.

Co-Founder and CEO of KAMIM Technologies Ltd, a Nigeria-based climate venture building solar-powered cold-chain solutions.

Becca McAtee is Director of Development at Halcyon, with over 17 years of experience in philanthropy and fundraising working with individual donors, foundations, corporations, and nonprofits across regional and international contexts. Her work spans strategic philanthropy, impact investing, in-kind donations, and volunteerism across sectors including education, healthcare, environment, and economic empowerment. She holds a Master of Science in Fundraising Management from Columbia University and the Certified Fundraising Executive (CFRE) and Chartered Advisor in Philanthropy (CAP) designations.

Christina Davis is an Event Manager at Halcyon. She has more than 20 years of experience in nonprofit management and has focused on event design and management for the past six years, with an emphasis on using systems and technology to organize in-person and virtual events.

David Corson is Vice President of Operations at Halcyon. He has over a decade of leadership experience in event and operations management, including delivering large-scale events, co-producing industry programs, and developing educational content. His work spans financial planning, cross-functional team coordination, vendor negotiation, and stakeholder and partnership management.

Emily Owen is a Program Manager at Halcyon, where she leads programming for social enterprises, and also consults on data strategy and visualization for mission-driven organizations. She has more than 15 years of experience across education, program strategy, and startup work, including managing a remote-first company focused on gender equity in transportation and redesigning accelerator curriculum for over 30 technology companies. Owen has led education programs in Egypt, Turkey, and Kenya.

Serves as the partnerships and giving contact at Halcyon, handling partnership opportunities, gifts of stock, employee giving, and donor-advised fund inquiries.

Mala Henriques is a LAC Program Consultant at Halcyon with over 10 years of experience developing social impact initiatives across Latin America, Europe, and Africa. She has designed and led more than 15 entrepreneur support programs with budgets up to USD $250,000, and has worked on impact measurement processes for international programs including Accelerate2030. Her work includes authoring Impact Hub Global's Building Issue-based Ecosystem Playbook, serving as Regional Host for the Impact Hub Network in Latin America, and building partnerships with organizations such as UNDP, BCG, the Vitol Foundation, and the International Trade Center.

Marcelo Homrich is Vice President of Programs at Halcyon, an organization that supports social impact innovators through incubation, education, and connection. In this role, he oversees the program lifecycle, including stakeholder relationships, alumni networks, and program methodologies, with programming spanning business modeling, fundraising, leadership, and social impact. He holds a Ph.D. from the Federal University of Rio Grande do Sul, where his research addressed customer evaluation and marketing intelligence.

Mercy Erhiawarien is Director of International Programs at Halcyon, where she oversees the operations, design, and implementation of the organization's domestic and international Intensives and supports its Fellows. Her background includes work in international development and project management, with field experience in Africa and the United States. She holds an MPhil in Public Policy from the University of Cape Town and a B.A. in International Development from Queen's University in Canada.

Scarlett Ojeda is a Finance Manager at Halcyon. She moved to the United States from Chile in 2013 to study English and holds a degree in Business Finance.

David is recognized as a technology innovation leader in Taiwan and Asia with experience building international e-commerce and mobile businesses across global IT firms, sports teams, and Web3 companies. He holds an MS from Carnegie Mellon University.

Douglas Romanoff is Managing Partner at Parameter Ventures, a venture capital firm. He focuses on early-stage investments in enterprise (B2B) technology.

Howard is a technologist who previously developed robots and software and has represented investments between China and Silicon Valley. He was with Acorn's investment platform in Shanghai and holds an MBA from Beijing Tsinghua University.

Lewis Wanjohi studied mathematics and computer science at MIT and is based in San Francisco, currently working on applied category theory and homotopy type theory at Tambua Health.