Meet the Team

  • Co-Managing Partner

    Biography
    Matt is a co-founding attorney and co-managing partner at Kiehn|Sanchez, licensed to practice law in Oklahoma, Texas, and before the United States Tax Court. His practice focuses primarily on cannabis compliance, transactional matters, estate planning, and personal injury representation.

    Matt earned his Juris Doctor from St. Mary’s University School of Law in San Antonio, Texas, where he served as President of the Animal Legal Defense Fund–St. Mary’s Chapter and competed as a brief writer for the National Moot Court Team. During law school, he gained experience through a judicial internship with the Honorable Judge Rosie Speedlin Gonzalez and participation in the Real Estate Clinic, along with clerkships in both civil litigation and transactional law.

    Matt works with clients across a wide range of regulatory, transactional, and litigation matters, including cannabis compliance, business formation and contract drafting, estate planning, and resolving personal injury claims. He also serves as a pro bono attorney for the Animal Legal Defense Fund and remains active in professional legal organizations. Outside of practice, Matt enjoys spending time with his family and many pets, as well as traveling throughout he U.S. and internationally.

    Education

    • University of Nevada, Reno (B.S., Economics, 2013)

    • University of Nevada, Reno (M.A., Education, 2017)

    • St. Mary’s University School of Law (J.D., 2024)

    Admissions

    • 2024, Texas

    • 2025, Oklahoma

    • 2025, U.S. Tax Court

    Professional Organizations

    • Oklahoma Bar Association

      • Animal Law Section

      • Business & Corporate Law Section

      • Estate Planning, Probate, & Trust Section

    • State Bar of Texas

      • Animal Law Section

  • Co-Managing Partner

    Biography
    Anna is a co-founding attorney and co-managing partner at Kiehn|Sanchez, licensed to practice law in Oklahoma, California, and before the United States Tax Court. Her practice focuses primarily on cannabis compliance and regulatory matters, tax law, small business civil litigation, and DUI/DWI defense.

    Anna earned her Juris Doctor from Pepperdine Caruso School of Law, where she served as President of the Environmental Law Society and Treasurer of the Animal Legal Defense Fund–Pepperdine Chapter. Since graduating, she has represented countless clients in cannabis administrative proceedings, small claims court, and audits conducted by the Internal Revenue Service (IRS) and the Oklahoma Tax Commission (OTC).

    Originally from Southern California, Anna is fluent in both English and Spanish. She relocated to Oklahoma in 2020 to help launch multiple cannabis businesses. She remains actively involved in the local legal and business community. Outside of practice, Anna enjoys spending time with family and friends, going to the movies, and attending local non-profit events.

    Education

    • University of California, Riverside (B.A., Sociology/Law & Society, 2015)

    • Pepperdine Caruso School of Law (J.D., 2019)

    Admissions

    • 2019, California

    • 2020, U.S. Tax Court

    • 2021, Oklahoma

    Professional Organizations

    • Oklahoma Bar Association

      • Taxation Law Section

      • Environmental Law Section

      • Criminal Law Section

    • State Bar of California

  • Director of Operations

    Sonia brings over 17 years of administrative experience in Oklahoma’s public school system and more than a decade of law office administration experience to her role as Director of Operations at Kiehn|Sanchez. She supported legal teams across a wide range of civil practice areas, including employment law, family law, probate and estate matters, and cannabis law.

    As the heart and soul of Kiehn|Sanchez, Sonia works closely with Matt, Anna, and our clients to ensure a positive, collaborative, and efficient work environment. She oversees the Firm’s operations, keeping the team organized, focused, and client-centered.

    Outside the office, Sonia prioritizes family and her beloved fur babies, which includes her dog, chickens, and horses. She is also deeply involved in her community, dedicating her free time to volunteering and pursuing her passion for the arts.