Tiernan T. Siems


Licensed to practice before state and federal courts in Colorado, Nebraska and Iowa. Since 1997, Tiernan has represented clients throughout the Midwest.  Representing businesses and individuals that are reluctantly drawn into litigation, Tiernan has successfully handled matters on behalf of his clients from inception, to litigation, and through appeal for nearly 20 years. His clients include Fortune 100 Companies, local and international businesses, as well as private individuals from across the country.

Tiernan is a member of the Board of Directors at Erickson|Sederstrom and presently serves as the Chair of the Litigation Division. He is also a member of the Workers’ Compensation and Aviation and Transportation Sections.

Tiernan is an author and a frequent lecturer, giving presentations in a variety of substantive areas of law to clients and at public seminars. Previously, Tiernan served as adjunct faculty at Creighton University School of Law and is a former arbitrator for the Better Business Bureau. Presently, he is a hearing officer for Omaha and Lincoln School Districts for hearings concerning the amendment, termination or non-renewal of teachers' and administrators' employment contracts.


Practice Areas

Aviation and Transportation Law
Labor and Employment Law
Workers' Compensation


Creighton University School of Law, J.D.
University of Colorado, B.A. 

Admitted To

State and federal courts in Colorado, Iowa, and Nebraska

Also admitted to practice before U.S. Supreme Court

Professional and Civic Affiliations

Aircraft Owners and Pilots Association -  Panel Counsel
Panel Hearing Officer - Omaha and Lincoln School Districts
Angel Flight Central - Volunteer Command Pilot

Additional Information

Besides his practice as an attorney, Tiernan holds an Airline Transport Pilot's Certificate, flies charter and private aircraft and serves as a flight instructor. He is a volunteer command pilot for Angel Flight Central and represents airmen, fixed base operations and other entities involved in legal matters throughout general aviation.

Office Location

Regency Westpointe
10330 Regency Parkway Drive Suite 100
Omaha, Nebraska 68114-3761
(402) 397-2200
(800) 279-3756