Our Leadership

Miyo Yamashita, President & Chief Executive Officer

Dr. Yamashita has 20 years of inspiring and innovative leadership, having held senior roles in healthcare, banking and technology. Her recent roles include Director, Strategy & Operations for University of Toronto’s Schwartz Reisman Institute for Technology and Society, as well as Managing Partner, Talent & Workplace and Chief Transformation Officer at Deloitte Canada. In 2017, the Women’s Executive Network recognized her as one of Canada’s Top 100 Most Powerful Women.

Sherri Freedman, Special Advisor to the President & CEO

Sherri has over 30 years of fundraising and leadership experience at United Way of Greater Toronto, The Mount Sinai Hospital Foundation and UJA of Greater Toronto. Previously the Chief Development Officer at PMCF, Sherri is back to pursue her passion of raising funds to help cancer patients and their families. Sherri has participated in almost every Princess Margaret event over the years as well as volunteering with other non-profits and coaching and mentoring numerous fundraising colleagues.

Melanie Johnston, Chief Marketing Officer

Melanie is a transformational marketing leader with senior level, integrated experience across a range of sectors, including financial, retail and not-for-profit. Prior to joining The Princess Margaret, she was Canadian CEO and Global Board Member of advertising agency Forsman & Bodenfors. She has also been President of DDB Canada, and a senior marketer at TD Bank. She is a passionate believer in the Foundation’s vision to Conquer Cancer in our Lifetime.

Tim Rochon, Chief Business Officer

Tim is a steadfast leader with a robust background in IT, strategy and analytics. He led the technology launch for JP Morgan Chase and Co. in Canada, Mexico and China before transforming the retail and pharmacy divisions of Shopper’s Drug Mart and Loblaw companies. Most recently, as Chief Technology Officer, Tim championed end-to-end technology insights that were foundational to the three-fold growth of 360insights.com

John Anzin, VP, Finance

John Anzin is a Chartered Professional Accountant (CPA) with significant technology, education and not-for-profit experience. He has a proven track record in all aspects of accounting, including finance, treasury, mergers, acquisitions, and project management. John also served as Treasurer of the Zerofootprint Foundation, an organization that engages communities around the world to eliminate climate change.

Steve Merker, VP, Corporate & Community Partnerships

Steve Merker is the VP of Corporate and Community Partnerships and co-founder of both the Ride and Road Hockey to Conquer Cancer. As Canada’s single largest athletic fundraising event, the ‘Ride’ recently celebrated 15yrs and over $250mm raised. Steve helps lead a diverse Peer to Peer portfolio including Ride, Road Hockey, Walk, Journey and several other “Conquer Cancer” programs. The success of these events is a direct result of the team’s hard work and dedication to the cause.

Ramona Oss, VP, Lottery

Ramona started her Foundation journey in 2014 as the Director of The Ride to Conquer Cancer and in 2018 took on a new challenge with the Home Lottery program. Prior to making the move to not-for-profit, Ramona’s career has spanned across the retail, sales and licensing industries and has always had a focus on business development, relationship management and revenue growth. She served on the Children’s Aid Society of Toronto board and regularly volunteers within the community.

Shannon Stuart, VP, Development

Shannon has 25 years of annual giving, major gifts and executive leadership experience, much of it right here at The Princess Margaret. Shannon first joined PMCF in 2001 and held increasingly senior positions prior to her departure to become CEO of the Ontario Shores Foundation for Mental Health in 2019. Shannon returned ‘home’ to lead our Major and Estate Giving strategy in 2022 and is delighted to return to the pursuit of conquering cancer in our lifetime alongside our donors and volunteers.