Assa Abloy AB is a Swedish conglomerate whose offerings cover products and services ranging from locks, doors, gates and entrance automation. This also includes controlling identities with keys, cards, tags, mobile and bio-metric identity verification systems.

Assa Abloy was formed in 1994, when Assa AB was separated from Swedish security firm Securitas AB. Shortly thereafter, Assa AB merged with the Finnish high security lock manufacturer Abloy Oy (based in Joensuu, a subsidiary of the Finnish company Wärtsilä).

The company was introduced to the Stockholm Stock Exchange later the same year. Assa Abloy has since made over 200 acquisitions including Yale lock, Chubb Locks, Medeco in the United States, Mul-T-Lock in Israel and Fichet-Bauche in France. 

Its two largest shareholders are Latour and Melker Schörling AB. Assa Abloy was formed in 1994, through the merger of Swedish firm ASSA and Finnish high security lock manufacturer Abloy. 

From a regional company with 4,700 employees in 1994, Assa Abloy has become a global group with 48,500 employees in 2018. The company has increased its operating income by 7000% since its formation and operates now in over 70 countries.

According to en.wikipedia