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Aday Adetosoye

Founder & Chief Executive Officer - 1099 Impact Street

Board/Governance, Business Development, Evaluation/Measuring Success/Impact, Executive Coaching/Organizational Development, Fundraising/Philanthropy, Impact/Social Investing, Leadership Development, Management of Staff/Teams and/or Projects, Public Speaker/Leadership Presence, Strategic Partnerships/Networks

Aday Adetosoye

About
Me.

Dr. Aday E. Adetosoye is a globally recognized strategist, leadership advisor, and nonprofit executive with over 20 years of experience advancing public health, organizational growth, and sustainable impact across more than 40 countries. She is the Founder of 1099 Impact Street, specializing in leadership development, fundraising strategy, and organizational performance.


As a former Vice President at a global health NGO, Dr. Adetosoye led teams across Africa, Asia, and Latin America, overseeing a $100M+ portfolio of donor-funded programs while navigating complex partnerships with USAID, CDC, The Global Fund, and host country governments. Her expertise lies in translating vision into strategy, building capacity within mission-driven institutions, and helping leaders lead with both data and heart.

She is a certified Maxwell Leadership Coach, a sought-after speaker on ethical leadership and nonprofit transformation, and a trusted partner to executives in global health, international development, and civic advocacy. Whether advising frontline leaders or facilitating board-level strategy sessions, Dr. Adetosoye brings clarity, compassion, and results to every engagement.


Dr. Adetosoye possesses deep expertise in building leadership readiness across high-growth sectors, including healthcare, education, government, and international development. She has the ability to flex coaching approaches between emerging professionals and C-Suite leadership teams. Her global experience across 40 countries brings cultural fluency and inclusive leadership strategies to every engagement, with proven success translating leadership development into measurable business outcomes such as faster promotions, higher retention, and stronger cross-functional collaboration. She utilizes a certified Maxwell methodology.

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