What Ellipsis does

Ellipsis U.S. Onshore Holdings LLC, doing business as Ellipsis, is a Dallas-based private energy company formed in 2023 that acquires and develops large, producing oil and gas assets across major U.S. onshore basins. Its core strategy is to take non-operated working interests, mineral interests, and royalty interests in producing properties, and to partner with existing operators through liquidity events, capital injections for asset optimization, new-venture capital partnerships, and drilling joint ventures that include carried working interests to enhance operator economics. The firm also participates as a buyer in marketed processes for non-operated assets across basins including the Permian/Delaware, Eagle Ford, Powder River, DJ, and Appalachia. The company is backed by Westlawn Group LLC, a Houston-based global investment firm focused on long-term oil and gas investment, which provides both the strategic capital and the advisory support underwriting Ellipsis's deal pipeline. Ellipsis generates returns primarily through production revenues, asset appreciation, and divestiture gains rather than disclosed fees, pricing, or standardized product offerings.

Operationally, Ellipsis runs a small professional team of one to ten employees led by Managing Director Matt Gentry and supported by a technical advisor, reservoir engineer, land manager, senior engineering analysts, and associates, with team members collectively bringing over 100 years of energy investing and operations experience drawn from firms such as Netherland Sewell & Associates, Kayne Anderson Capital Advisors, Whiting Petroleum, Concho Resources, RSP Permian, EnCap Investments portfolio companies, and Bechtel Oil & Gas. Go-to-market is relationship-based enterprise field sales: direct outreach to operators, participation in marketed asset sale processes, and warm deal flow through the Westlawn Group network. Since formation, Ellipsis has completed acquisitions in the Delaware Basin in June and October 2023, expanded into multiple onshore basins in December 2023, and announced a further acquisition and farmout agreement in August 2025 to scale its non-operated portfolio.

Name

Ellipsis

Legal name

Ellipsis U.S. Onshore Holdings LLC

Website

https://ellipsis.us

Company type

Private

Founded year

2023

Operating status

Operating

Headcount range

1–10 employees

Short description

Ellipsis is a Dallas-based private energy company, formed in 2023 and backed by Westlawn Group, that acquires non-operated working interests and mineral/royalty interests in producing U.S. onshore oil and gas assets, partnering with operators through capital injections, drilling joint ventures, and marketed-process participation.

Ownership category

akta.pro rank

Headquarters

HQ city

Dallas

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure, Others

Revenue model

1. Oil and Gas Asset Investment Returns: Ellipsis generates returns through acquisition and development of large, producing oil and gas assets. The company focuses on non-operated working interests as well as mineral and royalty interests in major U.S. onshore basins. Revenue is derived from production revenues, asset appreciation, and successful asset divestitures.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels4 records

Core offering

Ellipsis is a Dallas-based private energy company that acquires and develops large, producing oil and gas assets in major U.S. onshore basins. Its core offering consists of capital deployment into non-operated working interests, mineral and royalty interests, existing asset partnerships, new venture capital partnerships, drilling joint ventures with carried working interests, and participation in marketed processes for non-operated assets. The company provides operators with liquidity events, capital injection for asset optimization, and creative deal structures to enhance operator economics.

Product overview

Ellipsis is a Dallas-based private energy investment company that offers a comprehensive suite of investment products for acquiring and developing large, producing oil and gas assets in U.S. onshore basins. The company's product portfolio centers on six core investment strategies: Non-Operated Working Interests and Mineral and Royalty Interests (direct asset exposure), Existing Asset Partnerships (providing liquidity to operators), New Venture Capital Partnership (funding significant acquisitions), Drilling Joint Ventures (carried interests in drilling programs), and Marketed Opportunities Investment (participation in competitive processes). The company operates across major basins including the Permian Basin, Delaware Basin, Eagle Ford, Powder River, DJ, and Appalachia, backed by strategic capital from Westlawn Group LLC.

Differentiator

Problem solved

Functional benefit

Products and services

• Non-Operated Working Interests
• Mineral and Royalty Interests
• Existing Asset Partnerships
• New Venture Capital Partnership
• Drilling Joint Ventures
• Marketed Opportunities Investment Active investor in marketed processes of non-operated assets across all U.S. onshore basins, participating in competitive acquisition opportunities.

Quantifiable outcome

• Managed by team with over 100 years of energy investing and operations experience
• +2 more outcomes

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

One partnership is on record.

• Various Oil and Gas OperatorscoreStrategic or Co-development PartnerEllipsis seeks partnerships with existing operators to provide liquidity events and inject capital to optimize asset performance and drive sustained growth. The company serves as a capital partner for operators seeking to acquire significant assets and provides carried working interests in new drilling opportunities to enhance operator economics.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Quantum Capital Group: Houston-based private investment firm focused on U.S. onshore oil and gas; competes with Ellipsis for upstream asset acquisition opportunities.
• EnCap Investments: One of the largest U.S. upstream-focused private equity firms; competes for the same operator-led acquisition opportunities as Ellipsis and is a likely peer in the same investment ecosystem.
• Kayne Anderson Capital Advisors: Energy-focused alternative investment manager with significant upstream private equity activity; a prior employer of Ellipsis's senior engineering analyst and a competitor in non-op capital.
• Trilantic North America: Private equity firm with dedicated energy practice investing in upstream oil and gas; comparable as a capital partner for operators alongside Ellipsis.

Direct peers

• Black Stone Minerals: Public mineral and royalty company with diversified U.S. onshore exposure; comparable to Ellipsis's mineral/royalty interest strategy and capital-partnership orientation.
• Sitio Royalties: Public mineral and royalty operator with multi-basin exposure across U.S. onshore basins; directly comparable investment model to Ellipsis's royalty and non-op interest strategies.
• Kimbell Royalty Partners: Public mineral and royalty owner-operator across multiple U.S. basins; comparable non-op investment mandate and capital-partner approach to operators.
• Viper Energy Partners: Public mineral and royalty acquirer focused on the Permian Basin; one of the closest direct comparables to Ellipsis's non-op and mineral/royalty acquisition strategy, though at much larger scale.

Emerging players

• Iron Orchard Operating: Mid-sized private upstream operator where Ellipsis's Land Manager previously served as Partner/VP Land; an emerging private operator of comparable size that operates in adjacent U.S. onshore basins.

Others

• Netherland, Sewell & Associates: Reservoir engineering and reserves advisory firm that several Ellipsis senior team members worked at; while not a direct competitor, it is a key counterpart and technical advisor in the same non-op investment ecosystem.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/wl-ellipsis

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ellipsis