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Expert advisors to CEOs, boards of directors, and leadership teams

Welcome to Wentworth

Wentworth Strategy Group is a diversified management consultancy trusted by CEOs, boards of directors, and leadership teams to support their growth and success. We advise exceptional clients from industries including professional services, technology, insurance, manufacturing, real estate, retail, food services, international development, arts and entertainment, health care, education, and government.


Our primary areas of expertise include strategic planning and execution, governance, marketing and communications, corporate finance, accounting, and equity, diversity, and inclusion. We work with for profit, non profit, and public sector organizations through projects, retainer-based relationships, and in fractional executive roles.

Start with


At Wentworth, we believe that success starts with strategy. Each of our consultants pair expertise in their domains with a deep understanding of how functional areas of an organization intersect with each other, and with the dynamic world and markets around us.

Sometimes we're called upon to help execute specific projects, and sometime we're brought in to revision entire enterprises. Either way, we will work with you to align your team, goals, plans, and partnerships behind a powerful strategy and impactful outcomes.

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Mark John Stewart, ICD.D

Managing Director

Mark John is an award-winning entrepreneur, charitable advisor, public speaker, and executive strategy instructor...

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Margaret Zanel, ICD.D

Partner, Strategy and Leadership

Margaret is a strategy, business transformation, and marketing leader with senior Fortune 150 experience and early stage growth...

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Leo Nupolu Johnson

Senior Advisor, Equity, Diversity and Inclusion, and Nonprofit Management

Leo Nupolu Johnson is an experienced non profit executive, human rights specialist, public speaker, and United Nations Fellow...



As a client of Wentworth Strategy Group, you're joining a thriving network and partnering with experts who have a sincere passion for seeing enterprises grow and achieve aspirational visions. Our client relationships are personal and we stay vested in your success for the long term.


Wentworth strongly values integrity, trust, empathy and ambition. We work with organizations looking to make significant impact and who seek shared value - creating both economic value and social impact.

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Speaking and Facilitation

Wentworth's experts are dynamic public speakers and facilitators who are sought by organizations and audiences across the world, from academia and professional media to industry conferences and motivational events. We're committed to a quest to impact as many people as possible and to help inspire others to do better business and be better corporate and global citizens.

Uniquely, we pair a compelling stage presence with true insights from on the ground experience and the breadth of knowledge gained from extensive consulting work. In addition getting on stage, we also leverage our speaking skills and strategic fluency as facilitators, and actively work with groups to move plans, projects and ideas forward.

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