| 1901 |
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ISS was founded in Copenhagen, Denmark as a small security company with 20 night watchmen named Kjøbenhavn-Frederiksberg Nattevagt (Copenhagen-Frederiksberg Night Watch) |
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| 1934 |
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ISS entered the cleaning business with the establishment of Det Danske Rengørings Selskab A/S (The Danish Cleaning Company) as an independent subsidiary of the security company |
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| 1946 |
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The first geographical expansion outside Denmark: Swedish subsidiary established |
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| 1968 |
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The company adopted the ISS name |
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| 1973 |
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Overseas expansion started |
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| 1975 |
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Group revenue reached DKK 1 billion |
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| 1977 |
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ISS shares listed on the Copenhagen Stock Exchange |
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| 1989 |
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The total number of employees in the Group reached 100,000 |
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| 1997 |
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Strategy “aim2002“ was launched. This strategy focused on Multi Services – selling a number of services to the same customer |
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| 1999 |
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ISS acquired Abilis, the second largest European provider of cleaning and specialised services, in a DKK 3.6 billion acquisition, the Group’s largest ever. Abilis had about 50,000 employees and annual revenues of DKK 5.2 billion in 1998. The total number of employees in the Group reached 200,000 |
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| 2000 |
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A new five-year strategy “create2005“ was launched, introducing the Facility Services concept |
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| 2003 |
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ISS’s first major pan-European Integrated Facility Services contract signed |
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| 2005 |
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A new strategy was introduced aiming at a continuous transformation of ISS towards an Integrated Facility Services company. ISS A/S was acquired by funds advised by EQT Partners and Goldman Sachs Capital Partners, and de-listed from the Copenhagen Stock Exchange. The total number of employees in the Group reached 300,000 |
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| 2006 |
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Group revenue passed DKK 50 billion. ISS made the second-largest acquisition in company history, when acquiring the outstanding 51% of the shares in Tempo Services Ltd. in Australia |
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| 2007 |
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Group revenue passed DKK 60 billion. ISS entered the US market through the acquisition of Sanitors Inc. The total number of employees in the Group reached 400,000 |
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| 2008 |
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Introduction of ISS’s strategy plan “The ISS Way”, which is built on four strategic cornerstones: customer focus, people management, the IFS strategy and a multi-local approach. ISS’s largest ever international Integrated Facility Services contract was signed |
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| 2010 |
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Group revenue passed DKK 70 billion. The total number of employees in the Group reached 500,000 |