Brian Barnhorst brings SAC Attorneys LLP more than 30 years of civil practice experience and heads up the firm’s fast growing litigation department. Previously he has worked for some of the most highly regarded firms in California. His practice has largely focused on the prosecution or defense of commercial disputes involving real estate, employment, partnerships, LLCs, and corporations — actions for breach of contract, fraud, breach of fiduciary duty, and interference with contract/prospective advantage, as well as collection actions and the enforcement of judgments. Many cases have necessarily involved, either directly or indirectly, insurance and insurance coverage. Mr. Barnhorst had an instrumental role on a 20-person defense team representing the co-defendant of PG&E in the toxic tort case that spawned the movie Erin Brockovich; in addition to being intimately involved in the substance of the litigation, he acted as liaison to the approximately 40 insurance companies on the risk. His work on that case led to his involvement in several other environmental claims. Mr. Barnhorst has also represented individuals as well as a wide variety of small and medium-sized businesses, including investment bankers, business brokers, wineries, real estate developers, contractors and subcontractors, and investors. Mr. Barnhorst has arbitrated and tried multiple matters to judgment, and has also substantial appellate experience.

Mr. Barnhorst is married to Andrea Harrison, MS, RD, CDE. Together, they have five adult children. Mr. Barnhorst enjoys hiking, golf, wine, classical music, and his hometown San Diego Padres.

Past Employment Positions

  • Lorenz Alhadeff Lundin & Oggel
  • Duckor Spradling Metzger & Wynne
  • Chapin Shea McNitt & Carter
  • Mazzarella Caldarelli


  • English


  • University of San Diego School of Law - J.D. - 1987
  • Indiana University, Bloomington - B.A. - 1980

Professional & Bar Association Memberships

  • Association of Business Trial Lawyers
  • California

    Member Since: 1987

Client Reviews

Mr. Cai Is a Diligent Attorney. My sister and I were defendants in a civil litigation case. We hired James Cai and his law firm, SAC Attorneys LLP. Mr. Cai is a diligent attorney and responded to our questions in a timely fashion. He and his staff were very helpful in keeping us informed of the...

Cynthia F.

I Am Truly Impressed. After spending a significant amount of time, money and efforts with my previous counsel at a larger law firm without getting meaningful results, I transferred my employment matter to SAC Attorneys LLP. The attorneys there were able to understand the complex situations of my...

X. Gao

They Took Time to Understand Our Technology. I am the founder of a bioinformatics start-up in the Silicon Valley and chose SAC Attorneys LLP as our corporate counsels. Their attorneys have great experience with high tech start-ups and were able to offer a highly competitive service plan while not...

Dr. Pete S.

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