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Publicly traded aktieselskab
Nasdaq CopenhagenISS
Founded 1901
Headquarters Copenhagen, Denmark
Key people
Jeff Gravenhorst CEO
Pierre-François Riolacci CFO
Sir Charles Allen Chairman
Revenue 79.137 billion DKK (2016)[1]
Increase 4.566 billion DKK (2016)[1]
Increase 2.220 million DKK (2016)[1]
Number of employees
494,233 (2016)[1]

ISS A/S (Integrated Service Solutions) is a Facility Services company founded in Copenhagen, Denmark in 1901. ISS services include: cleaning services, support services, property services, catering services, security services and facility management services. The ISS Group’s revenue amounted to DKK 79.1 billion in 2016 and ISS has nearly 500,000 employees and activities in approximately 75 countries across Europe, Asia, North America, Latin America and Pacific.[2] More than half of ISS' employees are based in emerging markets.


1901 ISS was founded in Copenhagen, Denmark as a small security company with 20 night watchmen named Kjøbenhavn-Frederiksberg Nattevagt (Copenhagen-Frederiksberg Night Watch)

1934 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

1946 The first geographical expansion outside Denmark: Swedish subsidiary established

1968 The company adopted the ISS name

1973 Overseas expansion started

1975 Group revenue reached DKK 1 billion

1977 ISS shares listed on the Copenhagen Stock Exchange

1989 The total number of employees in the Group reached 100,000

1997 Strategy “aim2002“ was launched. This strategy focused on Multi Services – selling a number of services to the same customer

1999 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

2000 A new five-year strategy “create2005“ was launched, introducing the Facility Services concept

2003 ISS’ first major pan-European Integrated Facility Services contract signed

2005 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

2006 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

2007 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

2008 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

2010 Group revenue passed DKK 70 billion. The total number of employees in the Group reached 500,000 [3]

2011 British security company G4S announces it will acquire ISS in a deal worth £5.2 billion.[4] The deal is later shelved, owing to shareholder unrest [5]

2012 Ontario Teachers' Pension Plan (Teachers') and KIRKBI Invest A/S make EUR 500 million investment in ISS [6]

2013 ISS is named world’s best outsourcing company as the International Association of Outsourcing Professionals ranks ISS as the #1 on its annual list of the world’s best outsourcing service providers – The Global Outsourcing 100 [7]

2014 ISS lists on the OMX Nasdaq Copenhagen Stock Exchange in Denmark’s biggest IPO in two decades [8] For the second year in a row, ISS was named the world’s best outsourcing company by International Association of Outsourcing Professionals [9]

2016 ISS enters a commercial agreement with IBM to use IBM Watson's Internet of Things platform to transform the management of over 25,000 buildings around the world. [10]


In January 2016, ISS announced that it had acquired the UK, Ireland, and European activities of UK-based GS Hall, a technical services company focused on mechanical and electrical engineering, energy management, and compliance.[11]

In November 2016, ISS announced that it had acquired Chile's fourth largest catering company, Apunto, with an annual revenue of DKK 116 million in 2015. [12]


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