Dale Ratliff

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...

Danielle’s practice has focused on complex financial matters, parental responsibilities, interstate jurisdictional disputes, drafting and negotiating marital agreements, and challenges to and enforcement of marital agreements. In addition, Danielle has experience with various family law-related appellate matters. Danielle believes in the pursuit of settlement whenever possible, while recognizing the litigation skills are invaluable when settlement cannot be achieved.Danielle earned her ...

Mr. Katz joined Burg Simpson in September 2005 after six years with the New York law firm of Seeger Weiss LLP, in which he was a partner. Mr. Katz focuses his practice primarily in the areas of complex, pharmaceutical mass tort, and class action litigation including consumer protection, securities fraud, products liability, and commercial litigation. In addition to his varied professional experience, Mr. Katz is a frequent speaker on electronic discovery, class actions, and pharmaceutical lit...

Offers sophisticated, practical and comprehensible advice on complex benefits and compensation matters. More than two decades of experience advising clients of all sizes. Brings unique expertise in payroll tax treatment and reporting issues, including worker classification. David Spaulding’s experience covers a wide range of employee benefits matters, including the design, implementation, communication, administration and amendment of all types of tax-qualified retirement plans, executi...

Richard Tegtmeier is an experienced and accomplished trial lawyer in Taft's Compliance, Investigations, and White Collar Defense group. He specializes in complex criminal and civil litigation and has tried more than 200 cases before juries. He is respected throughout the country for his unique ability to navigate the courtroom and the complex process of a jury trial—he has the confidence required to think and act outside the box and produce the type of results that can only come from de...

Shane Griffin represents developers, institutional owners, investors and lenders in commercial real estate transactions, with a concentration on office and mixed-use development in Denver. He has served as development and leasing counsel on prominent projects in Lower Downtown, River North, Cherry Creek, and the Central Business District, and he brings deep familiarity with how deals in those submarkets are structured and priced. Clients appreciate Shane for his command of the local market, h...

Micah Dawson is a lawyer recognized by Best Lawyers in the practice area of Litigation - Labor and Employment. Micah practices law in Denver, Colorado Best Lawyers has recognized Micah Dawson since 2025. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Micah Dawson is held by other lawyers.

Zachary Siegel is a lawyer recognized by Best Lawyers in the practice area of Real Estate Law. Zachary practices law in Denver, Colorado Best Lawyers has recognized Zachary Siegel since 2027. The Best Lawyers recognition is based on a peer-review survey of lawyers in the same geographic region and legal practice area. The recognition reflects the professional regard in which Zachary Siegel is held by other lawyers.

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

Curt Sullan was born in Fort Lauderdale, Florida, in 1962, and grew up near Chicago. He graduated from Glenbrook North High School in 1980 and from the University of Maryland in 1984. He received a bachelor’s degree in political science, with a double minor in English and Philosophy. Mr. Sullan graduated from the University of Denver College of Law in 1988 with a Juris Doctor. While at the University of Denver, Mr. Sullan served on two law reviews and was a member of the Moot Court. Mr....