Theresa Mazzullo

Theresa Mazzullo has been CEO of Excell Partners since 2006. She has a 30-year track record in business, finance and entrepreneurship. Having owned and sold a small business, she brings firsthand knowledge, unique skills, and proven experience to the seed stage investment arena. In her role as CEO, her duties include governance, compliance, reporting, community integration, finance and fundraising. In addition to her CEO position at Excell, Theresa co-founded Impact Capital NY, LLC. a privately-held VC Fund in upstate NY. Her fundraising ability has resulted in bringing over $82 million into the upstate ecosystem for investments in high tech startups.

Theresa received a Bachelor of Arts degree from Spring Hill College, Mobile, Alabama and a Graduate Degree in Banking from ABA Stonier Graduate Banking Program. Her community activity includes: Treasurer & Member-Executive Committee, Greater Rochester Enterprise Board; Member of Nextcorps Board; Trustee, Farash Foundation; Executive Committee, Finger Lakes Regional Council; Member ROC 2025 Leadership, Member NYS’s $100M Innovation Fund Investment Advisory Committee. In 2019, Theresa was named in the New York Tech Power 50 List by City & State NY magazine. In that same year she received a Lifetime Achievement Award from the Boys & Girls’ Club of Rochester and a Circle of Excellence Award from the RBJ. In 2021, Theresa was named in RBJ’s Power List 100. In 2022, 2023 & 2024 she was named in RBJ’s Power 50 List in Technology.