Core Values

Have Integrity

Uphold the highest ethical standards by making honest and honorable decisions.

Be Guest Obsessed

Take personal ownership to build relationship-centered experiences encompassing guest’s wants, needs, and desires.


Actively listen, support, and work with your team, colleagues, and guests.

Stay Curious

Take pride in finding a better way everyday.


Find joys in the wins of your guests, team, and community!

Our Mission

Empower each other to ignite a story through memorable experiences in Kalamazoo.

Our Vision

Create the new standard of inspired hospitality, dining, sports and entertainment.

We Are Responsible Business Leaders

Greenleaf Hospitality Group is committed to being a Responsible Business leader in the communities we serve. We strive to create a positive and safe environment in which our employees and guests can contribute to the communities where they live and work. Our ambition is to take responsibility for diversity and inclusion efforts, operate in a socially and ethically manner, and create sustainable business practices.

Diversity & Inclusion: Our Foundation for Innovation

We’re passionate about creating an inclusive workplace that promotes and values diversity.

Greenleaf Hospitality Group is committed to creating a diverse and inclusive culture where the thoughts and talents of all employees at every level are valued, appreciated, and respected. We are committed to creating and maintaining a fair and equitable culture and business environment built on mutual respect and integrity. Our desire is for all employees to have the opportunity to achieve their full potential and to contribute to our mission to empower each other to ignite a story through memorable experiences Kalamazoo.

The History of Greenleaf Hospitality Group

  • Greenleaf Hospitality Group is established

  • Radisson Plaza Hotel & Suite, Kalamazoo, is acquired

  • Kalamazoo Wings and Wings Event Center—partial ownership established

  • Kalamazoo Wings and Wings Event Center—full ownership acquired

  • Wings West joins Greenleaf Hospitality Group

  • The Greenleaf Hospitality Group family is 600 employees strong and growing

Leadership Team

Tim Rayman


Shaping the culture at Greenleaf Hospitality is especially satisfying for Tim because it allows him to improve the quality of life for his 600+ team members.

Tim has been a member of Greenleaf Hospitality for 14 years. After two years as Corporate Sales Manager, he became Director of Catering & Convention Services, helping to launch our offsite catering business brand. He served as Director of Hotels until 2018, when he was named CEO for Greenleaf Hospitality Group. Tim attended Western Michigan University.

Tim is on the Board of Directors for Discover Kalamazoo and he serves as a mentor for the First 50 program with Southwest Michigan First.

Being with his family is Tim’s first love. He feels fortunate that he’s able to spend time coaching his kids in baseball, softball and basketball. If Tim isn’t at home, on a ball field, or in the gym on a day off, check the golf course. You’re sure to find him there.

Good to Great, by Jim Collins

Brad VandenBerg

Vice President of Business Development for Greenleaf Hospitality Group, Managing Director of Stadium Management Corporation

Brad embraces his career and considers it an opportunity to support, council, coach and mentor our wonderful group of young, professional business leaders.

Brad spent his first 32 years in business as owner of The VandenBerg Company, a manufacturer’s representative in the apparel industry. After two years of retirement, he missed the fulfillment of his career. Eleven years ago, Brad was offered a leadership role at Greenleaf Hospitality Group and Stadium Management Corporation, and he jumped at the chance. Brad earned his B.S. at Western Michigan University.

Brad remains very active in all of the charitable and community initiatives of Greenleaf Hospitality Group and Stadium Management Corporation.

Spending time with his family comes first with Brad, but he also loves boating, playing golf and saltwater fishing.

Trillion Dollar Coach: The Leadership Playbook of Silicon Valley’s Bill Campbell, by Eric Schmidt, Jonathan Rosenberg, et al

Sarah Olszowy

Vice President of Marketing

Sarah enjoys using strategic marketing to solve difficult business challenges almost as much as she loves helping her team grow, collaborate and celebrate accomplishments.

Prior to joining Greenleaf Hospitality, Sarah gained 10 years of experience at a Chicago marketing agency. There, she oversaw marketing strategy development, mobile marketing tours, sponsorship activations and more, for major brands such as The Hershey Company, J.P. Morgan Chase, Hostess Brands, and Country Financial. She has a B.A. in Business Management from Hope College.

Sarah is a Board Member of Southwest Michigan First’s Next Gen Leadership Committee, and she serves as Programming Director for the American Marketing Association of Southwest Michigan.

Sarah enjoys traveling, and that often includes visiting our national parks. She is passionate about fitness and outdoor activities like hiking, kayaking, camping and backpacking.

Everybody, Always, by Bob Goff

Sarah Miklusicak, SPHR, SHRM-SCP

Executive Director, Human Resources

When faced with a challenge, Sarah welcomes it as a new opportunity. She brings positive change and growth to our profession, our teams, and our entire organization.

Sarah began her career at Greenleaf Hospitality in 2010, as the HR Training & Development Manager. She holds the Senior Professional in Human Resources certification, the SHRM-Senior Certified Professional certification, and is a Certified Strengths Coach, Gallup. She earned her B.A. at Michigan State University.

Sarah is an adjunct instructor of the Human Resource Certification Preparation Course at Kalamazoo Valley Community College (KVCC). A former Board Trustee of Kalamazoo Human Resource Management Associate (KHRMA), she remains an active member.

Sarah is very enthusiastic about sporting events (Go Green!), and she loves spending time with her family and friends.

Anything by authors Malcolm Caldwell and Adam Grant because of the way they form connections using real life stories and examples to explain social science research.

Ryan Cunningham

Executive Director of Food and Beverage

Ryan sees every day as a new and exciting experience and he approaches each one with renewed creativity, skill and inspiration.

After joining Greenleaf Hospitality in 2004, Ryan spent several years as a line cook, server and bartender before entering management. He was promoted to his position as Executive Director of Food and Beverage in 2018. Ryan attended Western Michigan University.

Ryan serves on the Downtown Kalamazoo Restaurant Week Committee and enjoys volunteering for organizations that benefit the environment and those less fortunate.

Ryan is always eager for a good game of golf, but he also enjoys almost any activity that involves sunshine and water.

The One Minute Manager, by Kenneth Blanchard Ph.D.

Ken Diggs

Chief Financial Officer

Ken believes we should never stop learning, growing and striving for improvement. He looks forward to every day as an opportunity to create something better for our guests, our coworkers, and himself.

Ken held several accounting positions during his early career, before deciding to return to school. Following graduation, he spent 11 years at Intel and Whirlpool, first as a financial analyst, then moving into management. In 2011, he became Chief Financial Officer for Greenleaf Hospitality. He earned a B.A. at Ball State University and an M.B.A. at Indiana University.

Ken serves as: council member for the Kalamazoo Marathon Advisory Council; treasurer of Southern Shores Field Service Council, Boy Scouts of America; and treasurer of Boy Scout Troop 205. He also volunteers with Loaves & Fishes and Ministry with Community.

Ken enjoys running, camping, playing racquetball and soccer, and attending music concerts. He also likes to watch Indiana Colts football and Indiana University basketball games. Above all, he loves spending time with his family.

Good to Great, by Jim Collins

Craig Davies

Assistant General Manager

Caring for others through service is what truly drives Craig. For him, that’s what hospitality is all about.

Previously in procurement and sales, Craig was Vice President of Operations at a drop shipping company for major dot com retailers. But what he really wanted was to work directly with people and to have a greater impact on his community. Eager to take his 15-year career in a new direction, Craig joined Greenleaf Hospitality. He earned his B.B.A. at Western Michigan University.

Craig is currently on the Board of Directors and Executive Committee, as well as several committees and subcommittees, for Big Brothers Big Sisters, serving Kalamazoo, Allegan, Calhoun, and Van Buren Counties

Craig loves nothing more than spending time with his wife and two sons, but he also enjoys playing sports and socializing with family and friends.

Bobby Baseball, by Robert Kimmel Smith.