ATM
Azienda Trasporti Milanesi (ATM) is the municipal public transport operator for the city of Milan, Italy. The company manages the city's integrated network of metro lines, tramways, buses, and trolleybuses.
Brand Identity Data
HQ Country
Italy
HQ City
Milan
Founded
1931
EU Headquartered
Yes
EU Manufactured
Yes
Ownership Type
state-owned
Stock Exchange
Private
Tax Domicile
IT
Ultimate Parent
Comune di Milano
Data Hosting
IT
CLOUD Act Exposure
No ✓
GDPR Status
compliant
Carbon Neutral
false
B Corp Certified
No
Supply Chain
partial
Repair / Recycling
Yes ✓
Ethical Certifications
None verified
Verified on October 15, 2026
Corporate Lineage
1931
Foundation
Azienda Tranviaria Municipale was established to manage public transport in Milan.
1964
Metro Launch
The company inaugurated the first line of the Milan Metro, Line 1.
1999
Corporate Transformation
The company transformed from a municipal agency into a joint-stock company (S.p.A.).