About
Sean G. Thomasson is a family law lawyer in Columbus, Indiana, and a founding partner of Thomasson, Guthrie, Schuh-Ogle & Happel, P.C. He represents clients in divorce, custody modifications, adoption, juvenile proceedings, and other family law matters. His practice also includes criminal defense, personal injury, collection law, probate, estate planning, medical malpractice, corporate matters, and business law. He helps clients address difficult legal issues with preparation, advocacy, and practical guidance.
Mr. Thomasson earned his B.A. in Political Science/Pre-Law from Ohio University in 1989 and his J.D. from Ohio Northern University School of Law in 1995. He was admitted to practice in Indiana in 1995 and Ohio in 2014. He is also admitted before the U.S. District Courts for the Northern and Southern Districts of Indiana. His education and admissions support a broad practice serving clients in both family-related disputes and litigation matters.
Mr. Thomasson handles criminal defense matters involving DUI, drug offenses, theft, robbery, sex crimes, violent crimes, driving while suspended, murder, battery, and other serious charges. His family law work includes divorce, custody, adoption, juvenile proceedings, and modification of custody orders. He also assists clients with personal injury claims, estate planning, probate concerns, collection matters, medical malpractice issues, and business-related legal needs.
Sean G. Thomasson is active in professional and community organizations. He is a member of the Bartholomew County Bar Association, Indiana State Bar Association, American Bar Association, and American Collectors Association. He has served in leadership roles with local boards and the American Red Cross. He has also taught paralegal studies as an adjunct faculty member at Ivy Tech State College.
Law Office Affiliations
- Partner, Thomasson, Guthrie, Schuh-Ogle & Happel, P.C.
- Member, Bartholomew County Bar Association
- Member, Indiana State Bar Association
- Panel Member, American Collectors Association
Licensed State
- Indiana
- Ohio
Education
- Ohio Northern University
Juris Doctor (JD) - Ohio University
Bachelor of Arts (BA)
Awards & Badges

- Drug Crime
- Juvenile
- Sex Crimes
- Probate
- Adoption
- Child Custody
- Child Support
- Divorce & Separation
- Marriage & Prenuptial Agreements
- Medical Malpractice
- Products Liability
- Slip & Fall Accidents




