__.__.1913
foundation as Società Ginnico Sportiva Pro Sesto
__.__.1923
dissolution due to financial problems
__.__.1927
new foundation as Unione Sportiva Pro Sesto
__.__.1928
forced integration into GS ENAL Breda
__.__.1945
new foundation as Unione Sportiva Pro Sesto
__.__.1963
renaming to Associazione Calcio Pro Sesto
16.07.2010
dissolution due to financial problems
20.07.2010
new foundation as Associazione Sportiva Dilettantistica Nuova Pro Sesto
__.__.2011
renaming to Società Sportiva Dilettantistica Pro Sesto
__.__.2020
renaming to Pro Sesto 1913