JoAnn C. Stonier serves as an Executive Advisor at The Cantellus Group, where she focuses on data, AI, and privacy strategy. She previously served as Chief Data Officer and Chief Privacy Officer at Mastercard, and as a Fellow of Data & AI. A globally recognized data strategist and lawyer, JoAnn brings deep expertise in AI, data governance, privacy, and responsible data design. She has advised executives, governments, and NGOs on commercial and non-profit solutions with a focus on practical regulatory implementation.

JoAnn has led major global initiatives on data and AI, including serving as Co-Chair of the World Economic Forum’s Global Futures Councils on Data Policy and Data Equity, Chair of the USCIB Data Policy Group, and Member of the UN Expert Group on Governance and AI. She teaches at Carnegie Mellon University and Pratt Institute and serves as a board and strategic advisor to Omnicom Group, Keebo, Lytical Ventures, Elementum, and the Institute for Advertising Ethics.

The Firm

The Cantellus Group is a boutique firm advising clients on the strategy, oversight and governance of AI and other frontier technologies.

Improving the use, oversight, and practical governance of frontier technologies and helping organizations navigate with confidence and integrity in a rapidly changing world.

Deep expertise across business, law, technology, communications, government and academia.

Forefront of thought leadership and policy, regularly consulting with business, public policy leaders and think tanks.

In-depth knowledge of current technologies and how they are developed and used, their promise and their shortfalls.

Services

Advisory

Legal

Thought

Communications

Compliance