Parthenon Capital-backed American Trust, a provider of retirement solutions, completed the acquisition of LT Trust, a national retirement plan provider and recordkeeper. Financial terms were not disclosed. “American Trust is recognized for the commitment it’s made to the retirement space, consistently innovating and growing to better serve its clients throughout the retirement ecosystem. We are excited to join the team and provide additional technology, services and resources to our collective clients," Bob Beriault, LT Trust Chairman and CEO.