Big Vision. Big Execution. Big Results

Building Strong Associations Together









...and counting

Working with Cothran Development Strategies has been a wonderful experience. They are always accessible, professional and provide excellent results! The entire team has an unbeatable work ethic!

 Anne Adams

CPA, Chapman Foundations Management, LLC: Program Chair, Oklahoma Healthcare Financial Management Association


Full-Service Association Management

We provide everything to make your industry trade association successful: from membership and finances to marketing and event management.




Let us help your company or nonprofit organization fill in administrative "gaps" while improving performance and efficiency.


Select Services

Only need one or two services? We provide many different select services to meet your organizational needs.


The Leadership of Cothran Development Strategies, Inc. 

Somerlyn Cothran.jpg

Somerlyn Cothran
President & CEO


580.332.4710 ext 103

Email Somerlyn

Since founding the company in 2001, Cothran has managed hundreds of national and local fundraising efforts, national & state trade associations, nonprofits and political action committees. In addition to Cothran and the company’s leadership in the arena of trade association management and development, CDS is also regarded as one of the top non-profit and political fundraising firms in the country, with clients in over 15 states. Cothran is currently the head of development for the largest national women’s conservative group in the country, Independent Women’s Voice and Forum, and served as a finance consultant to past U.S. presidential nominee Mitt Romney and former President Donald Trump.


She was named a 2005 Rising Star in Politics by Campaigns and Elections magazine and was a co-founder of the National Association of Political Fundraisers. She is an active member in the National Association Management Company Institute, The American Society of Association Executives and is a certified administrator of the MBTI®. Locally, she is a past president and board member of the Ada City Schools Foundation and serves on the board of the Harold Hamm Diabetes Center, as well as the Advisory Boards of the Mama T’s Homeless Shelter and TLC Therapeutic Riding Center. Because of her passion for education, in 2015 she was appointed by former OK Governor Mary Fallin to serve on the Oklahoma Partnership for School Readiness Board.


Cothran was a member of Leadership Oklahoma Class XVII, named an Oklahoma Achiever Under 40 in 2012 and was a 2014 and 2015 Oklahoma “Woman of the Year” finalist. She earned her bachelor’s degree in Communication from the University of Tulsa and a Master’s Degree in Human Relations and Organizational Development from the University of Oklahoma.

Jamie Whitefield.JPG

Jamie Whitefield
Senior Vice President


580.332.4710 ext 101

Email Jamie

Ayla Headshot.jpg

Ayla Rohl
Communications Coordinator

580.332.4710 ext 104
Email Ayla

Casidy McMeans.jpg

Casidy McMeans
Senior Database Manager
580.332.4710 ext 108
Email Casidy

Janet Ranallo.jpg

Janet Ranallo

Senior Project &

Association Manager

580.332.4710 ext 105

Email Janet

Ann Cook.jpg

Ann Cook

Senior Project &

Association Manager

580.332.4710 ext 110

Email Ann

Shyanna Sloan.jpg

Shyanna Sloan

Project Manager


580.332.4710 ext 109

Email Shyanna

Ashley Clapper
Administrative &

Membership Assistant

580.332.4710 ext 107

Email Ashley

Hannah Pope.JPEG

Hannah Pope
Assistant to the President

580.332.4710 ext 106
Email Hannah


Kacy Clark
Communications Assistant

580.332.4710 ext 112
Email Kacy


Over the phone or online

2313 N Broadway

Ada, Oklahoma 74820

580-332-4710 ex 103

  • Grey Facebook Icon
  • LinkedIn
  • Instagram