OREANDA-NEWS. HRT Participates em Petróleo S.A. (the “Company” or “HRT”) (BM&FBOVESPA: HRTP3, TSX-V: HRP), in compliance with the provisions of Article 12 of CVM Instruction 358/02, announces that it has received a letter from Itaú Unibanco S.A. (“Itaú Unibanco”), informing that, on 12/26/2013, the investment funds under its management held 14,727,305 common shares issued by HRT, equivalent to 4.9509% of the total capital stock of the Company, representing a decrease of 155,200 common shares comparing to Itaú Unibanco prior holding, equivalent to 5.0031% of the total capital stock of the Company, disclosed on the News Release of 12/17/2013.

HRT Participates holds one of the largest independent oil and gas exploration and production companies in Brazil. The HRT Group comprises six main subsidiaries: IPEX (Integrated Petroleum Expertise Company Servicos em Petróleo Ltda.), HRT O&G Exploracáo e Producáo de Petróleo Ltda., HRT Netherlands B.V., HRT África Petróleo S.A., HRT América Inc. and HRT Canada Inc.. The Company retains a 55% interest in 19 exploratory blocks in the Solimóes Basin. HRT also operates ten exploratory blocks off the Namibian coast: eight blocks in the Orange Sub-basin and two blocks in the Walvis Sub-basin. HRT's team includes PHDs and masters in geochemistry, geophysics, biology and engineering, most of them former employees of Petrobras and ANP (Brazil petroleum agency). HRT is committed to minimizing any possible environmental impacts in the sites where it acts. Our commitment to the local communities is towards health conditions, safety and quality of life.