Sibylle M. Clark
Partner
Sibylle M. Clark is a partner in Greenspoon Marder’s Denver office. Her practice covers marital and family law, criminal defense, and litigation.
Ms. Clark brings decades of courtroom experience as a family law attorney, former deputy district attorney, and defense counsel. She has represented clients at every stage of litigation, serving as a trial lawyer, strategist, negotiator, and trusted advisor. Prior to entering private practice, she prosecuted cases in La Plata, Douglas, and El Paso counties.
In her family law practice, Ms. Clark handles dissolution of marriage and legal separation actions, including the division of property and debts, maintenance, decision-making, parenting time, child support, and relocation. She also handles post-decree modifications to parenting time and child support, and she enforces orders through contempt proceedings or by execution of judgments. She looks for creative solutions and structures settlements around each family’s needs.
An accomplished litigator, Ms. Clark has tried more than 140 jury trials. They include first and second-degree homicide, armed robbery, burglary, sex assault, kidnapping, child abuse, vehicular homicide, DUI and DWAI, and crimes against elderly and other at-risk victims.
Experience
Professional and Community Involvement
- Colorado Bar Association, Member
- Arapahoe Bar Association, Member
- Douglas and Elbert County Bar Associations, Member
Speaking Engagements
- “Vaccination Orders from State Court: An Overview of Constitutional Constraints and Current Jurisprudence,” Colorado Bar Association Spring 2022 Family Law CLE Seminar
- “Expert Problems, Expert Solutions: Considering the use of Child Legal representatives,” Colorado Bar Association Spring 2024 Family Law CLE Seminar
- “Persuasive Communications to Facilitate Problem-Solving with Pro Se Litigants, Challenging Opposing Counsel, and the Court,” Colorado Bar Association Spring 2025 Family Law CLE Seminar
- “W.T.F.?! Where’s the Fault?!,” Colorado Bar Association Spring 2026 Family Law CLE Seminar
Reviews
5 Stars Hands Down
“This past fall, I was faced with the most devastating situation I could imagine. I was going through an unexpected divorce and was not sure when or if I would see my child again. I found Sibylle Clark online and it was the best decision I could have made. She acted immediately to help me understand what I was facing , and at the same time made sure I was protected in every way. She was kind and extremely patient and walked me through every step. Her paralegal Julie was amazing and kind and helped me get organized. The two of them are compassionate and tenacious and will also give it to you straight, which is what you want. Luckily thanks to their efforts my situation has resolved into joint custody and super fair terms for the divorce. They were always highly organized and prepared for every turn of events. I highly highly recommend Sibylle Clark as counsel when you are in need of the best. 5 stars hands down.”
– Sage Brantley
I Strongly Recommend
“Sibylle Clark was very knowledgeable and a great resource for me. I strongly recommend!”
– Aaron Mack
Highly Recommend
“Sibylle provided great insights and options. I found her to be a collaborative problem solver. Highly recommend.”
– James D.
Sibylle is Amazing
“Sibylle is amazing at what she does and I am grateful for the work she did for me! Thank you!”
– Sean Zyer
My overall divorce experience was better for choosing to work with an attorney like Sibylle.
“It took a while after my separation to pull the trigger on the legal process of divorce, so when I was finally ready in August of 2021, I made the call. Benjamin King was the original attorney I consulted with, and he introduced me to Sibylle. She, Ben, and Julie (a paralegal) walked me through the steps it would take to get divorced stating that it could wrap up in as few as 90 days, or could take up to as many as 18 months. I knew that my divorce wasn’t going to be easy, however, Sibylle and the team made it less painful. Working with my ex husband, who’s attorney’s withdrew from the case was very difficult for everyone involved. Throughout the entire process I was reassured that I was doing everything right, and that my patience would pay off. Having a child involved in the case has been emotional, but with the legal guidance from Sibylle, we made it through a long and grueling 12 months with a positive ruling. I will continue to use Sybille for any family law matters while I reside in Colorado. My overall divorce experience was better for choosing to work with an attorney like Sibylle.”
– Jade Smith
Very Helpful
“In going thru a divorce under very emotional circumstances, Ms. Sibylle Clark helped me thru a fairly difficult process resulting in what I feel was a very positive outcome. I feel like we, and her assistant Julie, worked thru the various steps as a team very well and were able to discuss issues frankly and to the point. I had already started the divorce process with my ex-wife, prior to coming back to their firm to help me proceed thru the final negotiations. From my experience in my divorce, I feel very comfortable in being able to recommend Ms. Clark to represent others.”
– Michael Cregger
Fantastic Attorney
“Sibylle Clark is a fantastic attorney. She represented me in a professional, strategic, calm and well reasoned way. She couples strength with integrity. I highly recommend her legal services.”
– Chris Lepzinski
Stellar Attorney
“Sibylle is a outstanding professional, down to earth and has the ability to see through the games and diversions of opposing counsel. She does not waste your money by chit chatting and is straight to the point. Even when things look difficult and situations are tense she keeps a clear head and in focus. It was a rough ride but I am so glad she was on the drivers seat. I recommend her wholeheartedly. If you want to hire the best, go with Sibylle.”
– Juan Miranda
