core sector communique

ArcelorMittal buys call options for 26.5 million of its shares and sells 11.5 million Treasury shares

Luxembourg, 27 December 2010 - Following the reopening of its share buy-back program for up to 6% of its issued share capital announced on 26 November 2010, ArcelorMittal acquired on 18 December 2010 US dollar-denominated call options on 26,533,997 of its own shares with a strike price of USD 30.15 per share.

The 26,533,997 call options acquired allow ArcelorMittal to hedge its obligations arising out of the potential conversion of the 5% US-dollar denominated bonds convertible into or exchangeable for new or existing ArcelorMittal shares due 15 May 2014 (ISIN US042752126).

ArcelorMittal also entered into an agreement on 18 December to sell 11.5 million treasury shares through an over-the-counter block trade for a price of USD 37.8682 per share, for settlement on 30 December.

About ArcelorMittal

ArcelorMittal is the world's leading steel company, with operations in more than 60 countries.

ArcelorMittal is the leader in all major global steel markets, including automotive, construction, household appliances and packaging, with leading R&D and technology, as well as sizeable captive supplies of raw materials and outstanding distribution networks. With an industrial presence in over 20 countries spanning four continents, the Company covers all of the key steel markets, from emerging to mature.

Through its core values of Sustainability, Quality and Leadership, ArcelorMittal commits to operating in a responsible way with respect to the health, safety and wellbeing of its employees, contractors and the communities in which it operates. It is also committed to the sustainable management of the environment and of finite resources. ArcelorMittal recognises that it has a significant responsibility to tackle the global climate change challenge; it takes a leading role in the industry's efforts to develop breakthrough steelmaking technologies and is actively researching and developing steel-based technologies and solutions that contribute to combat climate change.

In 2009, ArcelorMittal had revenues of $65.1 billion and crude steel production of 73.2 million tonnes, representing approximately 8 per cent of world steel output.

ArcelorMittal is listed on the stock exchanges of New York (MT), Amsterdam (MT), Paris (MT), Brussels (MT), Luxembourg (MT) and on the Spanish stock exchanges of Barcelona, Bilbao, Madrid and Valencia (MTS).