Daniel M. Minzer

Catherine Puttmann, Esq. is a founding shareholder at Sherr Puttmann Akins Lamb, PC. Ms. Puttmann received her B.A. in political science from the University of Colorado, Boulder in 1994, and her J.D. in 1997 from the University in Houston. Ms. Puttmann is an experienced litigator and negotiator. She was a criminal prosecutor with the 18th Judicial District from 1999 until 2005 when she moved to private practice, specializing in family law. Ms. Puttmann is an advocate for alternative dispute r...

Concentrates on oil and gas, environmental and land use law. Involved in many of the major disputes facing the energy industry in Colorado. Mark Mathews has successfully represented oil and gas and mining clients and real estate development companies in litigation and regulatory rulemakings concerning oil and gas preemption and royalty issues, hazardous waste contamination, enforcement of oil and gas regulations, zoning and development disputes and land use permitting issues. Mark is outside ...

Heidi uses her life experience to bring a practical and relatable approach to her estate planning practice. She advises clients on a wide variety of estate planning matters, including estate and trust administration and pre and post-marital agreements. Additionally, Heidi has experience with real property, business and entity formation and general consultation, and commercial leases and contracts. Heidi is a member of the Orange Book Forms Committee and the Rules and Forms Committee of the Co...

Quinn Girrens is a top attorney recognized by Best Lawyers in the practice area(s) of Personal Injury Litigation - Plaintiffs. Quinn, who practices law in Denver, Colorado, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Quinn is held by other top lawyers in the same geographic and legal practice area.

Dillon represents governmental entities and other transaction participants in public finance transactions and economic development matters serving as bond counsel, special counsel, disclosure counsel, underwriter’s counsel and bank counsel.

Tanya brings a unique perspective to Sherr Puttmann Akins Lamb PC through her extensive background as a Master of Social Work (MSW). Prior to graduating cum laude from DePaul University College of Law, Tanya spent eight years as a Licensed Clinical Social Worker conducting custody evaluations and providing courtroom testimony of her custody findings and recommendations. Her experience gives her special insight into cases involving mental health and substance abuse issues, as well as complex d...

Riley was born in Aurora, Nebraska and had the good sense to move to Colorado when he was 2 years old. He graduated from Drake University with a Bachelor of Arts in Political Science in 2000. Riley received his Juris Doctorate from the University of Denver, Sturm College of Law in 2004. He was admitted to the Colorado Bar in October 2004. He is a member of the Colorado and Denver Bar Associations, and is active in the Family Law Section and Young Lawyer’s Division. Riley is a member of ...

Real estate attorney with 20 years of experience. Unique practice combining expertise in water resources and water infrastructure along with commercial and office projects. Collaborative problem solver and strategic advisor. Andy Meyers' practice integrates real estate, water resources, mining and construction. He provides a comprehensive approach to the acquisition, development, management and disposition of commercial, residential and industrial assets. With his experience resolving the dis...

For more information, please visit www.gibsondunn.com/lawyer/bergsieker-ryan-t/ .

Chris focuses on employment litigation and counseling. He has represented employers before federal and state courts and agencies in a variety of employment matters.