Breen Sullivan

Breen Sullivan is a seasoned legal professional with extensive experience as a General Counsel and C-Suite executive in high-growth companies across various sectors including technology, SaaS, energy efficiency, and data science. Her expertise spans operations, commercial contracting, human resources, employment matters, corporate and deal strategy, board communications, privacy, risk management, and financial matters. She began her legal career as an Intellectual Property Associate at Kilpatrick Townsend & Stockton LLP. outsidegc+2

Breen is the Founder and CEO of The Fourth Effect (formerly The Fourth Floor), a platform dedicated to fostering boardroom diversity and empowering women in the entrepreneurial ecosystem. She co-founded the initiative to create a marketplace for women-led startups to find advisors and funding, and for women executives to access board and investment opportunities, thereby addressing the gender wealth and funding gap. The Fourth Effect leverages AI to connect diverse talent with companies seeking diverse perspectives, influencing the demographics of private company boards. thefourtheffect+4

Breen is recognized as a thought leader and advocate for women in business, frequently featured in publications such as Forbes and Nasdaq, and speaking at events including Harvard Business School. She is an advisory board member for SXSW and has been involved with initiatives like the Modern Leadership Initiative to promote greater visibility for board-ready women. Her work extends to being a Founding Member of Marble Collective, an AI-powered platform amplifying women leaders. outsidegc+3