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Aleph Midstream S.A. (“Aleph Midstream”) is an independent midstream company focused on gathering and processing infrastructure in the oil window of Argentina’s Vaca Muerta shale play. Riverstone is the majority sponsor (50%) of Aleph Midstream alongside The Southern Cross Group (“Southern Cross”) and Vista Oil & Gas (“Vista”).

In June 2019, Riverstone committed US$102.5 million to Aleph Midstream, with US$100.0 million from REL and US$2.5 million from co-investors. Southern Cross committed US$54.0 million, Management committed US$3.5 million, and Vista committed US$45.0 million via the in-kind contribution of its existing midstream facilities located in its Entre Lomas block, for a total of US$205.0 million of equity.

Aleph Midstream will become the first midstream player dedicated to provide gathering, processing and evacuation services for oil and gas production of Argentina's Vaca Muerta shale play, spearheading a new paradigm for the development of this world-class shale play built on the concept of long-term partnerships with upstream-focused producers underpinned by acreage dedication agreements.