The story
ATP Esercizio Srl was founded in the beginning of 2012 by the merging of two transport companies: Tigullio Pubblici Trasporti Spa, founded in 1976 and operating in Chiavari, and ALI Autolinee Liguri Provincia di Genova Spa, founded on 2 June 2000.
On the 1st January 2021, ATP Esercizio effectively merged into AMT Genova in its entirety; with its services and staff now being part of the latter operator.
From Wikipedia’s article on ATP Esercizio, shared under CC BY-SA 4.0.3