After high school, Mark enlisted in the United States Army as a Military Policeman. Following training, he was sent to New York City where he served as a Protective Service Agent for the Department of Defense, providing security to high-ranking DoD officials and their foreign guests. In 1988, Mark received an Army ROTC Scholarship and attended Colorado State University. He graduated in 1991 and was commissioned as a second lieutenant in the United States Army. Mark earned his Doctor of Jurisprudence in 1995, followed by a fellowship to study environmental law at The George Washington University Law School. In 1996, he was admitted to the Colorado bar.
In October of 1996, Mark entered the United States Air Force as an Assistant Staff Judge Advocate (JAG). He served as Chief of Environmental and Civil Law and as a Special Assistant United States Attorney. In January 1998, he became an Area Defense Counsel for the Eastern Circuit of the United States, defending over 40 criminal trials at Air Force bases throughout the eastern United States and Panama. Later, he was reassigned to Hanscom Air Force Base in Boston, Massachusetts, where he served as the Chief of Environmental Law, negotiating Federal Facility Agreements with the EPA, and continued his role as a Special Assistant United States Attorney and Deputy Staff Judge Advocate.
In March 2001, Mark joined a large national law firm, responsible for litigating complex commercial and business litigation matters. By 2007, he started his own practice focusing on family law matters, including child custody and child support cases.
In 2020, Mark reunited with his former colleague, G. Stephen Long, during the formation of GSL Trial Lawyers. Sadly, Mr. Long passed away in 2022, after which Mark became a shareholder in a downtown full-service law firm. In 2023, he established MGL Law, where he continues to dedicate his legal services to family law, specifically in areas such as divorce, child custody, and child support.
In his free time, Mark enjoys spending time with his two German Shepherds, Claire and Zorro, and his 4 lb. Chihuahua, Bella. He is also an avid motorcycle rider and enthusiast.
Admitted to Practice Before
- United States District Court: District of Colorado
- State Courts: Colorado
Professional and Community Affiliations
- Colorado Bar Association
- Mentor, Denver Kids
- Foster Parent, Animal Rescue of the Rockies