Franklin-based Tivity Health Inc. is set to buy Pennsylvania-based weight-management company Nutrisystem Inc. in a cash-and-stock deal valued at $1.3 billion.
The deal is expected to close in the first quarter.
"The acquisition of Nutrisystem is an exciting and transformational event for Tivity Health as we expand our portfolio of healthy lifestyle brands," Tivity CEO Donato Tramuto said in a news release. "Tivity Health and Nutrisystem share the same mission-driven culture and have highly talented,…