We specialize in managing non-profit associations. Mattison was founded in 1988 and has experienced modest but steady growth over each of the past twenty four years.

We take pride in what we do.

Our hard work and desire to carry out the mission of the associations we serve, has resulted in sustainable growth for our clients, built on a foundation of trust and long lasting relationships.
Running on EOS® guides Mattison in achieving clients’ goals. Both member and stakeholder alike see this simple set of practical tools aiding Mattison in operating well so that we can focus on our impact.
Scott Grimes
Chris Price
Robert Riggs, CAE
Lane Velayo, CAE
Marissa Beck
Association  Coordinator
Cody Blevins
Finance  Coordinator
Jennifer Carlson
Association  Manager
Aimee Conrad-Hill
Funds Development Director
Rileigh Crafts
Association Manager
Jessica Deak-Sims
Association Coordinator
Katelyn DeHaan
Executive Director
Joy Desmarais-Lanz
Chief Operations Officer
Sarah Eller, CAE
Association Executive
Sarah Everhart
Director of Finance & Operations
Kate Garrison
Executive Assistant
Kyle Hickman
Association Manager
Vanessa Jimenez
Marketing Coordinator
Maria Johnson
Association Coordinator
Jess LaNore
Executive Director
Nicole Likens
Association Administrator
Jesse Linville
Lead Instructor
Gary Martin
Safety Director
Heather Martin
Program Director
Patrick McGovern
Executive Director
Madison McGrath
Executive Assistant
Matthew Nance
Stephan Oeschle
Director of Fraternal Operations
Meaghan Owens
Lead Navigator
Brooke Paddack
Program Support Specialist
Emma Paskoff
Event Services Coordinator
Daniel Perryman
Michelle Rajani
Financial Coordinator
Veronica Rand
Association Manager
Alicia Rankin
Association Manager
Paige Riley
Association Manager
Justin Russell
Association Manager
Justin Sines
Chapter Growth Coordinator
Travis Smith
Director of Engagement
Kate Walters
Coordinator,  K12 Initiatives
Marcy Watson, CAE
Executive Director
Caroline White
Association Coordinator
Macauley Wieland-Horning
Coordinator, K12 Initiatives
Macoy Riley

25+ years

Founded in 1988, we continue to specialize in non-profits

100+ events

We plan and deliver over 100
events per year
We’ve been recognized as one of the Best Places to Work in Indiana. Learn more at BizVoiceMagazine.
Most of our efforts are put toward growing our clients. Our philosophy is if they grow, we will grow. We’re about leading and helping solve problems in industries and communities.
Scott Grimes