Chamber Staff

Michelle Madden is the President/CEO of the Grand Prairie Chamber of Commerce.  A resident of Grand Prairie for the last 20 years, she serves on the Grand Prairie Zoning Board of Adjustments, is Chairperson for the Grand Prairie YMCA and is a board member of Children First Counseling Center, Inc., as well at the Grand Prairie ISD Career and Technical Education (CTE) Board.

With a degree in Construction Science from Texas A&M, the passion for building a community is second nature for Madden.  Former President of the Westchester on the Creek HOA and the Grand Prairie Council PTA, Madden is committed to carrying on good works of her predecessors and building on them to meet the ever-evolving needs of the community.

Michelle Madden lives in Grand Prairie with her children, Cameron and Trinity.

Gregory Cashman is the Membership Director of the Grand Prairie Chamber of Commerce.

A Minnesota native, Greg has a background in sales, having held Director of Sales positions for multiple publications, most notably, the Dallas Morning News.  

Greg joined the staff of the Grand Prairie Chamber in 2004 and his position is key in recruitment and retention of our membership.  Greg’s non-nonsense style, calm demeanor and great sense of humor is appreciated by everyone.

Greg attended the University of Minnesota, majoring in mathematics.  He also attended Lakewood Junior College in Minnesota for two years. He is community-minded and can be seen participating at events such as Grand Prairie’s “Big Event”, Lifeline Shelter’s “Soup’s on for Love” and City of Grand Prairie Ice Cream Challenge.

He is a current member of and has previously served as the president of the Grand Prairie Metro Rotary.  Greg is currently on the advisory boards of Advantage Academy as well as Concord Career College and has previously served on both Keep Grand Prairie Beautiful and Brighter Tomorrows’ boards.

Greg is married, lives in Grand Prairie with his wife Theressa and enjoys golf, bird hunting and fishing.

Maria Santi is the bilingual Minority Outreach Director of Grand Prairie Chamber of Commerce, where she plans and promotes the development of business skills in professionals and entrepreneurs, all in a framework of respect for diversity through programs, workshops and special events.

Maria’s passion is building bridges between different business communities; her success is based on her ability to negotiate, create partnerships and develop new strategies for projects she leads. Currently, she specializes in assisting the Latino community in the DFW area and presents her personally developed programs "Negotiation and Communication" and "Commercial Culture in the USA", at different workshops and networking events.

Maria is a mother of two, lives in a very quiet city in Texas with her husband, her youngest son and two spoiled dogs. She holds an LLM in US Law from Washington University School of Law, and a bachelor’s degree in Law from The Universidad Autónoma del Estado de México.

Maria is always bringing something new to the table, stay tuned! 

Hayley Mattson is the Director of Special Events and Marketing for the Grand Prairie Chamber of Commerce. She is a 2018 graduate of Tarleton State University with a degree in Communication Studies with an emphasis on Public Relations & Event Management.

As a lifelong Grand Prairie native, Hayley has witnessed the expansion of her hometown and the value of a strong business community from a young age. Hayley’s position with the Chamber allows her to use her creative imagination, attention to detail, and contagious enthusiasm to bring the Chamber’s special events to life.

Hayley believes that as a young professional, there is a strong importance in being involved with the community and gaining personal growth through the life experiences of others. She is always looking for different ideas and unique ways to make each Chamber event that much more special. She is married to her husband Trey and they live here in Grand Prairie. In her spare time, she can be found enjoying the outdoors, camping at the lake, and spending time with family.