Sean R. Gallagher

Former United States attorney and Colorado deputy attorney general. Seasoned counselor and litigator for clients facing federal and state government investigations and internal investigations. Recognized political law advisor to corporations and nonprofits on campaign finance, election and ballot initiative law. Throughout his time as United States attorney, deputy attorney general of Colorado and years of private practice, Jason Dunn has handled some of the highest-profile cases in Colorado....

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...

Jamie Hubbard is respected as a top strategic legal mind and focused trial lawyer. She enjoys tackling complex cases, sifting through the noise and zeroing in on the facts that matter. Her plain-speaking and common-sense approach appeals to jurors, who comment on Jamie’s relatability and how she effectively communicates her clients’ story. Above all, Jamie takes pride in connecting with and relating to clients and developing a client-centered case strategy. Jamie began her career ...

Elizabeth Kemery Sipes is a top attorney recognized by Best Lawyers in the practice area(s) of Securities / Capital Markets Law. Elizabeth Kemery, who practices law in Denver, Colorado, has been recognized since 2021. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Elizabeth Kemery is held by other top lawyers in the same geographic and legal practice area.

Ms. Treece, a founding Member of Brown Gren Abraham & McCracken, LLC, is a trial lawyer with over 40 years of litigation experience. Ms. Treece is recognized as one of the premier workers’ compensation defense lawyers in the State of Colorado. Ms. Treece began her legal career as a Deputy District Attorney and as a law clerk to the former Chief Judge of the United States District Court for the District of Colorado. Ms. Treece then gleaned experience in the civil defense arena. She s...

Understands complexities of water litigation, acquisitions and transactions. In 40-plus year career has led 750 water litigations and over 20 Supreme Court appeals. Former senior water counsel and first assistant attorney general for the Water Unit of the Colorado Attorney General’s Office. Steve Sims is a leading western water law attorney with a focus on water court litigation, water acquisition strategy and water transactions in the west. He brings four decades of experience represen...

Joe is a no-nonsense, hardworking lawyer with an undergraduate degree in Civil Engineering and eight years of practical work experience in the road and bridge construction industry, including work as a project superintendent for a heavy highway general contractor. Since he began practicing law in 1995, Joe’s practice has been devoted exclusively to construction law, with a specific emphasis in construction litigation. He represents owners, design professionals, contractors/subcontractor...

Negotiates and closes complex development transactions. Assesses risk to efficiently and cost effectively achieve maximum results. Skilled at creating positive relationships between public stakeholders and private real estate developers. A real estate attorney focused on achieving her client’s business objectives, Blair Lichtenfels advises prominent developers and equity investors in connection with urban infill, brownfield, master planned, mixed use and transit-oriented developments. B...

Trusted advisor to multiple ultra-high-net-worth individuals. Deeply engaged in public policy and fundraising for 25 years. Closed numerous multi-billion dollar deals. Steve is an irreplaceable asset to some of the highest profile owners, managers, investors and financiers in the nation. He has negotiated and advised on hundreds of deals over the course of his career, including several high-profile, politically contentious multi-billion-dollar transactions in energy and renewable energy, tele...

David D. Powell, Jr. is a partner in the firm’s Denver office, focusing his practice on employment and commercial litigation. Before co-founding the firm with his colleagues in 2023, David served as a Deputy Attorney General in the Colorado Attorney General’s Office, managing the eight separate legal units comprising the State Services Section. In this role, he oversaw those responsible for representing the state’s key elected officials and providing legal services in the ar...