Orange Belgium S.A.

Transaction in Own Shares • Aug 31, 2015

Press Release

Embargo until August 31 2015 at 7:30 a.m. Regulated information

Purchase of own shares in the context of the liquidity contract

Brussels, Monday, August 31, 2015 – In the framework of the liquidity contract, Mobistar (Euronext Brussels: MOBB) announces today that it has bought 7,000 own shares during the period 24/08/2015 up to 28/08/2015. For the same period, Mobistar has sold 0 own shares.

Acquisition date	Number of shares purchased	Average price (euros)	Highest price (euros)	Lowest price (euros)
August 24, 2015	5,000	17.958	18.500	17.625
August 25, 2015	500	17.615	17.615	17.615
August 26, 2015	0	0	0	0
August 27, 2015	500	17.790	17.800	17.780
August 28, 2015	1,000	17.750	17.750	17.750

At August 28, 2015, Mobistar held 23,000 shares acquired in the framework of the liquidity contract. The summary of the acquisitions realized in the framework of the liquidity contract launched on August 1 st, 2014 is available on the corporate website http://corporate.mobistar.be/en under the section "Financial information / Shareholders & Investors / Liquidity Contract".

Mobistar (EURONEXT BRUSSELS: MOBB) is one of the main actors on the telecommunications market in Belgium and Luxembourg. The company offers its residential customers postpaid and prepaid innovative mobile telecom products and services. On the business market, Mobistar operates DSL fixed network telephony and high-speed Internet, acts as an integrated communications provider and offers a portfolio of mobility and connectivity services. Mobistar is also a wholesale provider, offering access to its infrastructure and service capabilities to its wholesale partners. Mobistar, with the Orange group as major shareholder, is listed on the Brussels Stock Exchange.

For further information, please contact: Investor relations: e-mail: ir@mail.mobistar.be Siddy Jobe: +32 (0)2 745 80 92

Press service: +32 (0)473 94 87 31 - http://corporate.mobistar.be/press Follow us on Twitter: @PressMobistar