Staff & Management

David Peacock
David Peacock
Chief Executive Officer

David is a business development specialist with a well-documented career as senior executive at both the President and CEO level in international television and electronic media. He’s worked extensively in the UK, France, Brazil, Colombia, Venezuela, Finland and the U.S.A. In 2011 he came out of retirement and returned to the Canadian tourism industry to head up one of the Province’s newly formed Regional Tourism Organizations; his previous work in tourism goes all the way back to 1992 when he was the Director of Marketing for Canada’s preeminent ‘development’ playhouse “the Blyth Festival” and founding member of the Huron Tourism Association.

He brings a results-oriented strategic approach to regional tourism based on leveraging existing demand generators and brands with a particular emphasis on direct consumer conversion and economic output measurement. David jokes that he runs the “unbranded” Ontario RTO…


Napier Simpson
Napier Simpson
Chief Marketing Officer, Chief Operating Officer

A leading strategist in market development and related operational implementation strategies Napier’s work took him to business development projects in North and South America. A passion for tourism and volunteer experience in various tourism initiatives and boards over the years led, in 2011, to the opportunity to conceive a development strategy for Regional Tourism Organization 4 Inc. To this day, Napier continues to guide RTO4’s market development and operational initiatives as CMO and COO.

Napier holds a degree in economics from Huron College University (University of Western Ontario) and an MBA from Ivey.


Zac Gribble
Zac Gribble
Director Media Technology

Zac Gribble is an entrepreneur at heart with several business ventures brought to fruition since graduating from business school in 1996. His current mission as Director of Media Technology with RTO4 is to help build an entrepreneurial mindset within the world of destination marketing and management that focuses on experimentation, agility and adaptability. As the tourism industry continues to navigate the massive technological disruption from the web, social media, mobile, wearables and proximity awareness, Zac envisions a brave new world ripe with opportunity for tourism destinations willing to shift towards a culture of innovation.

In New Orleans, Louisiana at the 2015 international symposium on social media in tourism, SoMeT, Zac received the prestigious North American award for Innovation for RTO4’s work as a tourism development incubator.


Karen Mitchell
Karen Mitchell
Administrative Assistant

A three year veteran at the Regional Tourism Organization 4 Inc. with prior experience in the tourism and hospitality sector, Karen’s keen service ethic has been instrumental in the launch, training and ongoing operations of the RTO4 wide Regional Reservation System, provides office coordination and management and is a project manager on specific RTO4 initiatives.

Karen has an Honours in Tourism Management Diploma from Georgian College and a BA in English Literature from the University of Waterloo.  


Andrea Gardi
Andrea Gardi
Senior Project Manager

Andrea Gardi joined RTO4 as a Project Manager, and is thrilled to be putting to good use her undergraduate degree in Honours Business Administration from the Richard Ivey School of Business and a Master’s degree in Tourism Policy and Planning from the University of Waterloo.  Her professional background includes positions with economic development and destination marketing organizations across Ontario.  Using strong organizational and analytical skills, she has a passion for growing the tourism industry in the region she was born and raised in.

Selected as one of Destination International’s 30 under 30 in 2017, she also received the AACB Scholarship to represent the group in Hobart, Tasmania.


Sherry Doiron
Sherry Doiron
Manager of Sport Tourism

Sherry brings over 20 years of professional and amateur sport administration experience in the fields of event management, high performance sport, community engagement and strategic consultation at a municipal, provincial and national level. A native of Kitchener-Waterloo, she returns home after recently serving the New Brunswick sport sector as a consultant for the provincial government as well as Chef de Mission for Team NB at the Canada Games. Previous leadership positions include Director of Community Development with the Ottawa Senators, and Manager of Coach and Athlete Development for Field Hockey Canada.

In addition to being involved in the Canada Games movement, she has also represented Canada in several capacities at multiple international sport events and multisport games, including the 2007 Pan American Games, 2010 Commonwealth Games and 2010 Vancouver Winter Olympics.

She holds an undergraduate degree in Sport Management from the University of Massachusetts along with an MBA from the University of New Brunswick.


Brenda Greydanus
Accounting Manager

Brenda joined Alliance Bookkeeping in March 2014 and quickly endeared herself to colleagues and clients alike. Her nonjudgmental and fun-loving personality makes her easily approachable by anyone. Her dedication and attention to detail supports both clients and colleagues.

Brenda has a strong background in bookkeeping with a diploma in accounting & small business management, experience from many years in agri-business having owned & operated dairy & poultry farms with her husband and bookkeeping experience from a variety of businesses.

A proud mother and grandmother, Brenda loves spending time with family and friends. And in the summer months touring with her husband on theirmotorbike.