GeoPark rejects Parex bid, strengthens position in Argentina’s Vaca Muerta shale

GeoPark has refused a takeover bid from Parex Resources, citing undervaluation of its assets and future prospects, emphasizing its newly closed deal for two Vaca Muerta shale formation blocks in Argentina.
Nov. 6, 2025

Key Highlights

  • Geopark declined an acquisition offer from Parex Resources, citing undervaluation of its assets and growth potential.
  • The company recently acquired blocks in Neuquén basin, which houses the Vaca Muerta shale formation.
  • The Vaca Muerta shale accounts for over 60% of Argentina's oil and gas output.

GeoPark Ltd. has declined an unsolicited acquisition offer from Canadas Parex Resources valued at about US$940 million, arguing that the proposal undervalued both the companys current portfolio and its future growth potential.

The decision comes shortly following GeoPark's entry into Argentina’s Vaca Muerta shale formation.

GeoPark recently closed on its purchase of Loma Jarillosa Este and Puesto Silva Oeste blocks in Neuquén basin, marking its official debut as an unconventional asset operator in Argentina. The blocks currently produce about 2,000 boe/d and have a development plan targeting 20,000 boe/d by 2028, supported by the drilling of 50-55 wells.

The project also includes construction of a central processing facility with capacity for 20,000 b/d and a pipeline connection between the blocks.

Market analysts interpreted GeoPark's decline of Parex's offer as a signal that it intends to remain independent and capture the value of its ongoing expansion rather than merge under conditions it views as premature or strategically limited.

Vaca Muerta accounts for more than 60% of Argentina's oil and gas output and drove a US$5.7-billion energy trade surplus in 2024. 

About the Author

Camilo Ciruzzi

South America Correspondent

Ciruzzi is a journalist based in the Argentine province of Río Negro. He has over 30 years of experience in radio and print media. Ciruzzi studied Communication Sciences at the University of Buenos Aires and specialized in energy, political economy, and finance.

[email protected]

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