Updated:
Hilcorp
Hilcorp is the single-family office of Jeffery Hildebrand, operating as a major US oil and gas producer with billions in revenue.
Hilcorp
Jeffery Hildebrand founded Hilcorp in 1985, building a private oil and gas producer that Forbes estimated in 2025 as generating over $5 billion in annual revenue. The firm operates as a single-family office for the Hildebrand family, but its investment posture is inseparable from its upstream energy business. Hilcorp deploys capital across oil and natural gas exploration, production, and acquisition in the US. The company focuses on maturing basins in the Permian, Eagle Ford, and Bakken, and has executed large-scale acquisitions—including a $7 billion purchase of BP's Alaska assets in 2019 (per Reuters, 2019). The firm uses a hybrid of direct drilling, joint ventures, and acquisition-funded growth. Total deployment figures are not publicly disclosed, but Hilcorp is a major US private driller with thousands of employees. The firm has no known adjacent philanthropic vehicles or external offices beyond its Houston headquarters. In 2022, Hilcorp was fined $10 million for pipeline violations in Alaska (per Alaska Public Media, 2022), an event that underscores the operational risk of its concentrated oil and gas model. Hilcorp's structural differentiator is its lack of separation between the family office and the operating company. Unlike most single-family offices that diversify beyond the founding fortune, Hilcorp reinvests nearly all capital back into the oil and gas business, making it a concentrated, single-asset family office that functions as an independent E&P firm.
General information
Firm type
Single Family Office
Year founded
1985
AUM
Undisclosed
Location
Region
North America
Country
United States
City
Houston
Corporate office
Houston, TX, United States
Principals
Jeffery Hildebrand
Founder and Chairman
Timothy J. Miller
CEO
Sector focus
Frequently asked questions
Who runs investment decisions at Hilcorp?
Jeffery Hildebrand founded the firm and holds ultimate strategic control. Timothy J. Miller serves as CEO and oversees day-to-day operations. Investment decisions are made by the executive team, with a focus on oil and gas acquisitions and drilling, not diversified financial assets (per the firm's communications).
Is Hilcorp a single-family office or an E&P company?
Hilcorp is both. It is a privately held oil and gas producer owned by the Hildebrand family, and it functions as the primary investment vehicle for Jeffery Hildebrand's wealth. The firm does not manage an external investment portfolio separate from its operating business, making it a concentrated single-family office.
Does Hilcorp invest outside of oil and gas?
The firm is heavily concentrated in oil and gas exploration, production, and acquisitions. There is no publicly documented track record of investments in other asset classes such as venture capital, real estate, or public equities. Its deployment is almost entirely within the energy sector.
How large is Hilcorp?
Hilcorp does not publicly disclose financial metrics such as AUM or revenue. Forbes includes the firm on its list of America's largest private companies, with an estimated revenue of several billion dollars annually (per Forbes, 2025).
Where does the underlying wealth come from?
The wealth derives from Hilcorp's oil and gas operations, founded by Jeffery Hildebrand. Hildebrand's net worth has been estimated by Forbes at over $13 billion, making him one of the wealthiest individuals in Texas (per Forbes, 2025).
What investment stages does Hilcorp target?
Hilcorp targets mature producing oil and gas fields, mainly through acquisitions of existing wells and development drilling. It does not typically invest in early-stage exploration or renewable energy ventures.
How is Hilcorp structured?
Hilcorp is structured as a privately held corporation with Jeffery Hildebrand as chairman and sole beneficial owner. The firm operates a single-family office that is essentially the corporate treasury, with no separation between the family's wealth and the company's balance sheet.
Profile maintained by Altss using OSINT (open-source intelligence), regulatory filings, licensed data partners, and verified direct submissions. Read the methodology. Last updated: . Continuous refresh with full update cycles at least every 30 days.
Need institutional-grade insight on family offices?
Altss delivers:
Prefer a guided tour?
We’ll walk you through: