OREANDA-NEWS. July 21, 2011. HRT Participacoes em Petroleo S.A. (the “Company” or “HRT”) (BM&FBOVESPA: HRTP3, TSX-V: HRP), pursuant to paragraph 4 of Article 157 of the Federal Law n. 6,404/76 and to CVM Rule n. 358/02, hereby announces to its shareholders, investors and to the market in general that:

On the date hereof, HRT Africa Petroleo S.A. (“HRT Africa”), a wholly-owned subsidiary of the Company, and Vienna Investments (Proprietary) Limited, a company organized and existing under the laws of the Republic of Namibia (“Vienna”) executed a Share Purchase Agreement (“SPA”), setting forth the terms and conditions applicable to the acquisition, by HRT Africa, of the following equity interests held by Vienna in companies organized and existing under the laws of the Republic of Namibia: (i) 50 (fifty) common shares issued by Limpet Investments (Proprietary) Ltd. (“Limpet”), representing 50% (fifty per cent) of Limpet’s total capital stock; (ii) 50 (fifty) common shares issued by Harmony Energy (Proprietary) Limited (“Harmony”), representing 50% (fifty per cent) of Harmony’s total capital stock; and (iii) 56 (fifty six) common shares issued by Acarus Investments (Proprietary) Limited (“Acarus”), representing 56% (fifty six per cent) of Acarus’s total capital stock (“Equity Interests”).

Limpet holds common shares representing 10% of the capital stock of Orange Petroleum (Proprietary) Ltd. (“Orange”), which holds 100% of the oil and gas exploration rights in blocks 2815, 2816 and 2915; Harmony holds common shares representing 10% of the capital stock of Kunene Energy (Proprietary) Ltd. (“Kunene”), which holds 100% of the oil and gas exploration rights in blocks 2713A and 2713B and 3% of the oil and gas exploration rights in blocks 1711A and 1711B; Acarus holds 20% of the oil and gas exploration rights in blocks 2813A, 2814B and 2914A, all of those blocks located in off-shore Namibia.

HRT, through its wholly-owned subsidiary HRT Canada, Inc. (formerly UNX Energy Corp.) indirectly holds common shares representing 90% of the capital stock of Orange and Kunene.

The price to be paid for the acquisition of the entirety of the Equity Interests is USD 30,000,000.00 (thirty million United States dollars) (“Purchase Price”), due and payable upon the effective transfer of the Equity Interests to HRT Africa.

The completion of the transaction, with the effective transfer of the Equity Interests to HRT Africa and the payment of the Purchase price to Vienna, is subject to certain conditions precedent set forth in the SPA.