Cottonmouth Ventures

Cottonmouth Ventures

Cottonmouth Ventures is the family office for Autry Stephens and his family, formed in the wake of the February 2024 sale of Endeavor Energy Resources to Diamondback Energy (per Diamondback Energy, February 2024). Stephens, a Midland-based wildcatter, spent four decades assembling a premier Permian Basin acreage position before the cash-and-stock transaction created the largest pure-play Permian operator. The family's wealth originates entirely from upstream oil and gas exploration and production. The family office deploys capital across a concentrated set of asset classes familiar to the Stephens operating history. Energy investments form the core, spanning both traditional upstream opportunities and the emerging energy transition space. Real estate represents a significant secondary allocation, with a focus on West Texas commercial and residential properties. Infrastructure investments — particularly midstream assets, water management, and oilfield services — round out the mandate. Cottonmouth is not known to operate as a fund-of-funds or to participate in external club deals, instead favoring direct, principal-style investments where the family's operational expertise provides an edge (per public record). The firm's scale is direct and undisclosed, but the Stephens family received roughly $8 billion in cash and 117 million Diamondback shares in the Endeavor sale, suggesting a multi-billion-dollar investment capacity (per Diamondback Energy press release, February 2024). The office operates from Midland, Texas, maintaining proximity to the Permian Basin assets that generated the family's wealth. Adjacent structures include ownership in Diamondback Energy common stock and deep ties to the Midland community through local philanthropy, though no separate foundation has been publicly detailed. The structural differentiator is the direct translation of a single operating company's expertise into an investment vehicle. Cottonmouth is not a diversified multi-generational office managing financial assets — it is the freshly capitalized vehicle of an operator who spent his career deploying capital into holes in the ground. That alignment, between the assets the family office will buy and the assets the family already knows how to build and operate, is the architecture. The transition from private operator to public shareholder and family office allocator marks a new chapter, with succession and governance likely centered on Lyndal Stephens Greth, who emerged as a key family representative during the Endeavor sale process (per Bloomberg, 2024).