Mark Schlafly has resigned as president and CEO of Atlanta-based FSC Securities after less than three years on the job.

"After much thought and consideration, Mark has chosen to return home to St. Louis for family reasons," FSC spokesperson Linda Malamut remarked in a prepared statement. "We respect his decision and wish him every success in the future."

Effective immediately, Larry Roth, president and CEO of Advisor Group, FSC's parent, will assume Schlafly's responsibilities, while the broker-dealer searches for a successor. Schlafly had previously worked at St. Louis-based A.G. Edwards, which was acquired by Wachovia, and at LPL Financial.