• Chamber Staff

    Our Chamber staff are passionate about serving at the Chamber and supporting our member businesses.

    Serving the business community

    Your Chamber and its staff does many things for the business and professional communities, and the general public, which they cannot do alone. Your Chamber staff provides services and benefits whose values surpass the dollar amount of your membership investment – when you connect with the Chamber.

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  • Michelle Madden
    President, CEO

  • Michelle Madden is the President/CEO of the Grand Prairie Chamber of Commerce.  A resident of Grand Prairie since 1998, 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 Chairperson for the Grand Prairie ISD Career and Technical Education (CTE) Advisory 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.



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  • Greg Cashman
    Vice President Membership

  • 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.



  • Claudia Herrmann
  • Claudia Herrmann
    Director of Minority Outreach

  • Claudia S. Herrmann was born in Mexico City and is a lawyer licensed to practice throughout Mexico, specializing in franchise and distribution law. She is a certified business coach and through her consulting company, CHF Consulting Group, LLC, she assists clients with their business, international trade, contracts, and intellectual property, and gives conferences, seminars, courses, workshops, and seminars. She is a continuous business and motivational speaker at conferences, seminars, courses, and workshops.

    She is owner of a commercial real estate, as well as of a transferceutical, health and body care products distribution business.

    Ms. Herrmann was founder of the Asociación de Mujeres Empresarias y Profesionales (AMEP), a national Latino business 501(c)(6) non-profit organization formed in February 2012 to promote Hispanic business and professional women. As founder of USA AMEP Foundation, a 501(c)(3) non-profit organization formed in 2015, she provided educational tools to Latina women who wish to start their own business, grow their existing business or simply wanting to achieve personal growth.

    She is a former columnist of the Al Día Newspaper – the Spanish version of the Dallas Morning News and of the El Hispano News newspaper, where she had a column titled “En Perspectiva” (“In Perspective”). She is the hostess of the “Conversaciones en Serie” Facebook Live show, after having hosted various radio shows.



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  • Hayley Mattson
    Director of Special Events
    & Marketing

  • 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.

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