Orange Belgium S.A.

Transaction in Own Shares • Aug 17, 2015

Press Release

Embargo until August 17 2015 at 7:30 a.m. Regulated information

Purchase of own shares in the context of the liquidity contract

Brussels, Monday, August 17, 2015 – In the framework of the liquidity contract, Mobistar (Euronext Brussels: MOBB) announces today that it has bought 1,600 own shares during the period 10/08/2015 up to 14/08/2015. For the same period, Mobistar has sold 11,600 own shares.

Acquisition date	Number of shares purchased	Average price (euros)	Highest price (euros)	Lowest price (euros)
August 10, 2015	1,000	19.374	19.420	19.325
August 11, 2015	500	19.638	19.655	19.620
August 12, 2015	0	0	0	0
August 13, 2015	0	0	0	0
August 14,2015	100	19.600	19.550	19.400

At August 14, 2015, Mobistar held 0 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