Daniel M. "Dan" Reilly

Doug has been an Assistant United States Attorney and Assistant District Attorney. Now that he is in private practice, Doug is one of Colorado’s most experienced and acclaimed criminal defense lawyers. AV rated by Martindale-Hubbell, with a perfect 10.0 / “Superb” rating by AVVO, Doug has been chosen as a “Rising Star” for several years—a distinction limited to 2.5% of Colorado’s practicing attorneys under the age of 40. In 2018 to 2020, he was recogn...

With extensive experience in water law, Mr. Thorne effectively represents clients in water court litigation and related administrative proceedings, including adjudication of water rights, changes of water rights, and complex plans for augmentation. He also assists clients with water rights acquisitions and in the development and negotiation of water supply arrangements. Mr. Thorne has substantial experience with project development and financing for energy companies developing water supplies ...

Ron is head of the environmental practice group and has over 30 years of experience in environmental matters including prior work as a physical scientist for the Denver Regional Office of the U.S. Environmental Protection Agency. He represents all types of clients, including various municipalities and other public sector clients, in environmental matters related to Environmental Compliance Audits, Voluntary Cleanups, Underground Storage Tanks, Asbestos, Water Quality, Air Quality, Hazardous W...

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...

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 ...

For two decades, Mark has provided legal representation and practical advice to business entities and individuals on a full range of corporate, real estate, business, and other commercial matters. In the role of outside general legal counsel, Mark also acts as a trusted advisor to decision-makers on the full range of legal and strategic issues facing businesses, both large and small. In his corporate practice, Mark provides advice with regard to the following: Entity formation Business start-...

Jim Rigberg is a seasoned business lawyer who provides end-to-end client representation in a variety of contexts. With particular expertise in the real estate and healthcare industries, Jim puts his years of courtroom experience to work advising clients on front-end strategies to secure optimal leverage and avoid exposure to costly litigation down the road. Jim also focuses his practice on Intellectual Property, where he helps clients protect their investments in their brands and creative out...

Matthew Gizzi is a top attorney recognized by Best Lawyers in the practice area(s) of Workers' Compensation Law - Claimants. Matthew, who practices law in Aurora, Colorado, has been recognized since 2024. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Matthew is held by other top lawyers in the same geographic and legal practice area.

David Tenner is a trial lawyer, an arbitrator and a special master appointed by Denver-area trial courts. His trial practice focuses on the representation of businesses and individuals in both state and federal court and in arbitrations. He tries complex business, intellectual property and tort cases to both judges and juries. He also tries complex claims in both domestic and international arbitrations. Mr. Tenner regularly provides clients with pre-litigation advice focusing on the resolutio...

Melissa was born in Omaha, Nebraska in 1968. She attended Colorado State University (graduating in 1990 with a B.A. in Political Science) and obtained her law degree from the University of Denver in 1994, where she served as an Editor on the Denver Journal of International Law and was a recipient of the American Jurisprudence Award in Estate and Gift Taxation. Melissa studied overseas and attended the University of London while serving as an intern in the House of Commons in London, England i...