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New E&P Scores Capital; Heading To the MidCon Region

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New E&P Scores Capital; Heading To the MidCon Region
Company Overview

406 Energy, LLC is a newly formed, Houston-based upstream oil & gas development company launched in October 2025 with an initial equity commitment from NGP Natural Resources XIII, L.P. and the 406 management team. The company was founded to pursue high-return, undervalued oil & gas development opportunities using a combination of advanced reservoir characterization and data analytics, with an emphasis on operational efficiency and durable returns.
Sponsor / Financial Backing

406 is backed by NGP (Natural Gas Partners)—one of the most established energy private equity sponsors, with ~$25 billion in cumulative equity commitments (per the formation announcement).

Leadership Team (Founding Partners)

406 Energy was founded by four partners—Mark Graeve, Tom Kastens, Josh Sigler…

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