Orange Belgium S.A.

Transaction in Own Shares • Dec 7, 2015

Press Release

Embargo until December 07 2015 at 7:30 a.m. Regulated information

Purchase of own shares in the context of the liquidity contract

Brussels, Monday, December 07, 2015 – In the framework of the liquidity contract, Mobistar (Euronext Brussels: MOBB) announces today that it has bought 19,150 own shares during the period 30/11/2015 up to 04/12/2015. For the same period, Mobistar has 17,877 own shares.

Acquisition date	Number of shares purchased	Average price (euros)	Highest price (euros)	Lowest price (euros)
November 30, 2015	2,100	20.925	21.020	20.850
December 01, 2015	0	0	0	0
December 02, 2015	0	0	0	0
December 03, 2015	5,000	22.196	22.400	22.025
December 04, 2015	12,050	21.700	21.900	21.600

At December 04, 2015, Mobistar held 10,000 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