Kathie Sierra

Associate Attorney

Language(s): English, Spanish


Ms. Sierra is a litigation associate in the firm’s Orange County office. Her practice primarily focuses on business disputes, complex civil litigation, personal injury, and wrongful death.  Ms. Sierra’s clients have included insurance companies, industrial supply companies, and small business owners.

Ms. Sierra’s clients rely on her to set a course and follow through on litigation strategy. She handles cases in both state and federal court, and in the arbitration context. She is involved with all aspects of case management, from case filing to trial. She makes a point of learning her clients’ business, so that she can give appropriate business advice, as requested.

Ms. Sierra received her legal training from Loyola Law School, Los Angeles.  During law school, she served as a judicial extern to the Honorable Deborah J. Saltzman of the United States Bankruptcy Court, and as a judicial extern to the Honorable Steven J. Kleifield of the Los Angeles Superior Court.  She also volunteered at the Loyola Center for Conflict Resolution and the Bankruptcy Self-Help Resources Center.

Ms. Sierra received her Bachelor’s Degree in Psychology with a minor in Education from the University of California, Los Angeles. After graduating from college, Ms. Sierra taught middle school students in South Central Los Angeles, and provided services to the surrounding communities as an AmeriCorps member.

Practice Areas & Focus

  • Business Law
  • Construction Defect Law
  • Litigation
  • Personal Injury


  • University of California, Los Angeles, 2011
  • Loyola Marymount University, Loyola Law School, Los Angeles, J.D., 2016


  • State Bar of California, 2018

Professional Associations/Memberships

  • Los Angeles County Bar Association
  • Women Lawyers Association of Los Angeles
  • Mexican American Bar Association
Photo ofKathie Sierra
Kathie Sierra
Job Title
Associate Attorney
Bohm Wildish & Matsen LLP
695 Town Center Drive, Suite 700,
Costa Mesa , California, 92622