Skip to content Michael S. Rumac


8500 Menaul Blvd. NE
Suite A-335
Albuquerque, NM 87112


J.D., cum laude, Southern Methodist University Dedman School of Law, 2003

B.S., Pharmacy, University of Rhode Island College of Pharmacy, 1992


Michael Rumac is a Partner in the Albuquerque office of GRSM. Michael concentrates his practice on commercial litigation, professional liability, tort and product liability, and pharmaceutical and medical device defense.

Michael was previously a partner in a national law firm where he handled both jury trials and bench trials on behalf of both business and individual clients. He was also Managing Attorney for the New Mexico office of a California-based firm practicing in the area of creditor’s rights litigation. He handled trials, arbitrations, and hearings on behalf of national banks and other consumer lenders. Upon moving to Albuquerque in 2020, Michael was an Assistant District Attorney in the Bernalillo County District Attorney’s Office where he worked prosecuting cases in the Major Crimes Unit.

Michael has experience in the areas of business and commercial litigation, pharmacist defense, premises liability, real estate litigation, construction litigation, insurance defense, and appellate law. He also has expertise in HOA representation and litigation, trucking defense, employment litigation, and bankruptcy litigation. In addition to first and second-chair trial experience, Michael has argued in front of the Fifth Circuit Court of Appeals in New Orleans and the Fifth District Court of Appeals in Dallas, Texas.

Michael also is a registered pharmacist in Texas, Massachusetts, Rhode Island, and previously Nevada. Prior to and while attending law school, he worked as a registered pharmacist for a national pharmacy chain in Boston, Massachusetts, Las Vegas, Nevada, and Dallas/Fort Worth, Texas.


  • New Mexico
  • Texas 
  • U.S. District Courts, Northern, Eastern, Western, and Southern Districts of Texas
  • U.S. District Court, Western District of Arkansas
  • United States Court of Appeals for the Fifth Circuit
  • United States Supreme Court


  • H. Vearle Payne Inn of Court

Community Involvement

  • The Rock at Noonday Shelter, Volunteer
  • Roadrunner Food Bank, Volunteer
  • New Mexico Middle School and High School Mock Trial Competitions, Volunteer Judge