Stak CEO/Co-founder, Diallo Powell, has been building socially impactful enterprises since 2008. He was a member of the founding team of the first B Corp health insurance company and Co-founder of Zipari (acquired), a platform to give health insurance subscribers greater transparency into the cost and administration of their care. Diallo co-founded Stak to catalyze the clean energy transition and realize positive climate and community impact.

Diallo was also a founding board member and now Vice Chair of the Public Housing Community Fund ("The Fund") board. The Fund was created to engage people and partners to invest in transformative programs that enhance the lives of 500,000 residents across NYCHA communities. Diallo resides in Brooklyn, NY with his wife and two kids.