
G. Mark Mickelson co-founded A1 Development Solutions in April 2017. Mickelson is a Certified Public Accountant (inactive), a member of the South Dakota Bar Association, and President of Mickelson & Company, LLC.
Mark is an active owner in the ongoing development of 200 acres of land in northwest Sioux Falls, and provides capital advisory and tax credit advisory services through Mickelson & Company. Mark has been a member of several volunteer boards including the South Dakota Community Foundation, the University of South Dakota Foundation, the Sioux Falls Area Chamber of Commerce, the Sioux Falls Development Foundation, and the South Dakota Board of Economic Development.
In addition to his local involvement, Mark served in the South Dakota House of Representatives from 2012-2018, and was Speaker from 2015-2018.