Sean Cooney

Sean D. Cooney

TEL   702.366.0622
FAX   702.366.0327

1100 E. Bridger Ave.
P.O. Drawer 2070
Las Vegas, NV 89125

Before joining Thorndal Armstrong, Mr. Cooney had an active insurance bad faith defense practice in California, representing insurers in a wide variety of first-party bad faith actions. Chief among Mr. Cooney’s cases was an multi-day long arbitration under California’s Cumis statute, California Civil Code section 2860 (an area of great interest in Nevada after the recent Hansen decision), involving the gross-overbilling by Cumis counsel in the defense of a pollution action. In addition, Mr. Cooney defended insurers in claims arising from construction defect suits, uninsured motorist, homeowners, and commercial liability policies, including taking four cases to verdict as co-counsel.

Mr. Cooney joined the firm in July 2015 and immediately took on the defense of the manufacturer of HVAC components in a multi-suit mass/class-action product liability and construction defect case. Mr. Cooney also continues his coverage and bad faith defense work, advising insurers on complex policy interpretation issues.


  • Nevada
  • California
  • U.S. District Court, District of Nevada
  • U.S. District Court, Eastern District of California
  • U.S. Court of Appeals, 9th Circuit


  • Bachelor of Arts, Whitman College, 2001
  • Juris Doctor, Santa Clara University School of Law, 2007


  • State Bar of Nevada
  • Clark County Bar Association


  • German