Counselor at Law
Tel: 314.218.3040, ext. 101
Shannon Lopata Kastor
Counselor at Law
Tel: 314.218.3040, ext. 103
Tel: 314.218.3040, ext. 102
Lisa M. Hipps
Legal Assistant / Paralegal
Tel: 314.218.3040, ext. 106
Dawn T. Christoffersen founded DTC Advisors, LLC in 2011. Dawn concentrates her practice in the areas of estate planning and probate and trust administration, federal and state income tax planning and controversy, and business legal matters, including general corporate counsel advice, mergers and acquisitions, and business succession planning. Dawn is also a certified mediator with focused expertise in these areas. Dawn has received an AV Peer Review Rating on Martindale Hubbell, the highest rate that can be given, which was given by her peers for her high level of professional excellence.
Dawn is licensed to practice law in Missouri, Illinois, and Colorado. She is also admitted to practice before the United States Tax Court and the Internal Revenue Service. She is a member of the American Bar Association, Real Property, Probate and Trust Law Section, the Missouri Bar Association, the Illinois Bar Association, the Bar Association of Metropolitan St. Louis, the BAMSL Probate and Trust Steering Committee, the Estate Planning Council of St. Louis, Saint Louis University Gift and Bequest Council (Chair, 2013-14 & Vice Chair, 2011-12), Cardinal Glennon Children's Hospital Planned Giving Council, the Ronald McDonald House Charities of St. Louis Planned Giving Council, and is a member of the Professional Advisory Committee of several area banks.
Dawn previously was an adjunct faculty member in the L.L.M. in taxation program at Washington University's School of Law and taught a class entitled "Practical Issues in Wealth Planning and Drafting".
Prior to founding DTC Advisors, LLC, Dawn was an equity shareholder and Practice Group Leader for the Business Law Practice Group at another area law firm.
Dawn received her L.L.M. in Taxation from Washington University in 2002 and received the Gary I. Boren Memorial Award for the highest GPA. She earned her Juris Doctorate from Northwestern University in 1997 with a Business Associations concentration and received her Bachelor of Science in Business Administration from Washington University in 1994 with a concentration in accounting and minors in music and political science. Dawn passed the Missouri Certified Public Accountancy Exam in 1996. She also has Masters in Sustainability from Saint Louis University.