Meet the Greater Sedona Chamber of Commerce team. Each team member plays a unique role. Let us introduce ourselves and tell you how we can help your business!
Donna Retegan, Member Services Director
Donna joined the Chamber Team in 2009 as the Membership Coordinator at the Administrative Office and in 2011 became the Director of Member Development and in 2012 became the Director of Visitor Services for the Sedona Chamber Visitor Center. Donna has lived in Sedona since 1997 and was born and raised in Northwest Indiana. She enjoys spending time with her husband Greg and their two daughters, Rachel and Lauren and their four grandchildren. She is a graduate of Verde Valley Leadership, Class VII and was a member of the Cottonwood and Sedona Toastmasters Club. She is passionate about the Sedona Chamber of Commerce & Tourism Bureau and the importance of educating our visitors while they are visiting Sedona. And the importance of businesses becoming partners within this organization to assist them with the tools they need to increase their business growth and success.
Victoria Latunski, Visitor Services Director
Victoria grew up in Michigan and moved to Arizona in 1990. She worked at Arizona State University while earning two degrees, a Bachelor of Interdisciplinary Studies and a Bachelor of Fine Arts - Sculpture. She has held administrative positions for Arizona State University and Scottsdale Public Art. She loves parks and recreation and worked as a park ranger at Red Rock State Park. She has lived in Sedona for over eight years and enjoys hiking, biking and yoga. She is passionate about placemaking and creating a strong sense of community. She hopes to create and promote cultural, educational and recreational activities for the community.
Gary Stewart, Finance Director
Gary Stewart joined the Chamber team in 2019 as the Director of Finance. After college Gary started out in public accounting as a financial statement auditor and then worked as the CFO for a Chicagoland community bank for twenty-six years. Visits to Sedona began in 2003 and Gary and Mary Jane made the move to Sedona from Illinois in 2018. Gary enjoys hiking, golfing, listening to music and working around the house and in the yard. Gary and Mary Jane look forward to exploring their new home state.
Eric Nguyen, Membership & Marketing Sales Director
Born in the Bay Area, California, Eric relocated to Sedona, Arizona in 2014 to pursue advanced studies at Northern Arizona University. There, he distinguished himself by attaining a Bachelor’s Degree in Business Marketing and graduating cum laude. Boasting over 14 years of experience in both traditional and digital marketing realms, coupled with an extensive background in sales and management, Eric brings a wealth of expertise to our team. He is keen on leveraging this proficiency to amplify brand visibility, foster community engagement, and drive new leads within the Sedona business sector. Outside of his professional commitments, Eric, alongside his wife Jaliza, relishes in culinary adventures and seizes every opportunity for spontaneous travels across Arizona, soaking in its scenic vistas.
Shanandoah Sterling, Events Director
Shanandoah is a business owner, and she understands the dedication and long hours it takes to succeed. Her background in travel, tourism, events, professional writing, executive management, and leadership guides her quest to assist other businesses in thriving. Since 2000, Shanandoah has operated a wedding business, planning 700 events, and has facilitated 200 business meetings, workshops, and events for the Greater Sedona Chamber.
Shanandoah Sterling was born in St. Thomas Virgin Islands, US, and grew up in New Hampshire. Her love of cultures, traveling, and tourism stems from the beautiful New England states and her international experiences.
She has received a Travel and Tourism Management Certification, a BA in English and Creative Writing, and is working on her graduate degree, MFA in Creative Writing.
Shanandoah has called Sedona home since 2003. When she’s not working, you’ll find her playing in Northern Arizona’s splendid nature with her husband and dog, hiking, camping, kayaking, or quietly taking in a sunset.
Erin Burd, Communications & Marketing Manager
Erin, originally from California, found her way to Sedona in 2024, after graduating California Polytechnic University San Luis Obispo. With a diverse background, spanning journalism, marketing and 17 years of customer service, including roles as an esthetician and in restaurants and retail, she’s uniquely equipped to support local businesses in Sedona and the Verde Valley. Erin’s passion for tourism and travel blossomed during her study-abroad program in Thailand and Cambodia inspiring her commitment to sustainability, inclusion and accessibility. Leveraging her experience in her family’s small businesses and her love of customer interactions, she’s dedicated to fostering these values locally and beyond. Outside of work, Erin finds joy in Pilates, hiking, and adventuring with her husband and dogs amidst Sedona’s breathtaking landscapes.
Jonathon Gammill, Sales Director
Jonathon Gammill, born in Oklahoma, brings an entrepreneurial mindset to his role as Sales Director, having owned and operated two businesses. In addition to assisting over 38 other entrepreneurs open their own businesses. With a passion for mentoring and helping entrepreneurs grow, Jonathon has developed a reputation for his ability to inspire and guide others toward success. His diverse background in business has given him the tools to drive innovation and foster strong, lasting relationships.
Read MoreA proud U.S. Navy veteran, Jonathon’s military service played a pivotal role in shaping his leadership style. During his time in the Navy, he led teams in high-pressure environments, honing his problem-solving skills and ability to lead by example. His military experience has translated seamlessly into his business career, where he continues to apply those same principles of discipline, dedication, and teamwork to everything he does.
When he’s not working, Jonathon enjoys exploring the great outdoors with his family. Living in Northern Arizona, he takes advantage of the incredible hiking trails, loves long road trips, and is always on the lookout for great food to enjoy along the way. Jonathon’s personal and professional life are both driven by a passion for discovery, growth, and building meaningful connections.
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Michelle Kostecki, President/CEO
Michelle has extensive management experience with specialty surrounding the disciplines of branding, advertising, direct marketing and public relations. An Arizona native turned UNLV Rebel, Michelle spent the first half of her career marketing resorts, casinos, and other businesses in the dynamic city of Las Vegas. Michelle then joined the Sedona Chamber of Commerce & Tourism Bureau in the role of Director of Marketing in 2009, advancing to the seat of President/CEO on June 1, 2022.
Read MoreMichelle supplemented her Bachelor’s Degree in Marketing with professional advancement training from Desert Sands Chapter of Public Relations Society of America, Dale Carnegie, Toastmasters and the Advertising Agency Management Institute. She is a Verde Valley Leadership Class XIV graduate. She has served in multiple capacities with the Economic Development Council of Northern Arizona Council of Governments (NACOG). She has served as a Board Member of both the Verde Valley Regional Economic Organization (VVREO) and the Arizona Lodging & Tourism Association (AzLTA) and currently chairs the Northern Arizona Committee of AzLTA.
This is Michelle’s second time in Sedona, having spent years of her childhood as a Sedona resident. In her free time, you will now find Michelle tooling around Sedona’s many art galleries, attending the city’s various events, and savoring the delicious regional cuisine with her husband Eric, a fellow foodie.
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