Private EquityRIA · CRD 168670SEC-RegisteredPrivate Fund Adviser

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Old Ironsides Energy

Old Ironsides Energy is an SEC-registered investment adviser in Waltham, MA, since 2013. The firm manages $1.2 billion in assets. It has 13 employees,...

Old Ironsides Energy logo

Old Ironsides Energy

Old Ironsides Energy is an SEC-registered investment adviser in Waltham, MA, since 2013. The firm manages $1.2 billion in assets. It has 13 employees, including 6 investment advisers.

General information

Firm type

Private Equity

Year founded

2013

AUM

Undisclosed

Location

Region

North America

Country

United States

City

Waltham

Corporate office

500 Totten Pond Road, Suite 630, Waltham, Massachusetts 02451, United States

Principals

Sean O'Neill

Principal

Daniel Rioux

Principal

Sector focus

EnergyInfrastructure

Frequently asked questions

Who runs investment decisions at Old Ironsides Energy?

Principals Sean O'Neill and Daniel Rioux lead investment decisions. The firm lists four additional investment professionals — Edward Joullian, Eric Jones, Erick Dominguez Ortiz, and Eihab Khan — who support sourcing, diligence, and portfolio management. O'Neill and Rioux have worked together since before the firm's 2013 founding.

How does Old Ironsides Energy source proprietary deal flow?

Old Ironsides sources deal flow by partnering directly with established upstream and midstream management teams to form asset-level joint ventures and new operating companies. The firm does not appear to run a competitive auction-based sourcing model, relying instead on its principals' relationships and basin-specific expertise to originate opportunities.

Is Old Ironsides Energy structured as a single family office or does it operate more like a traditional private equity firm?

Old Ironsides Energy operates as a traditional private equity firm, not a family office. It raises committed capital from external limited partners and has closed two energy-focused funds totaling over $2 billion in commitments. The firm is not affiliated with a single-family wealth source.

Does Old Ironsides Energy participate in fund commitments or only direct deals?

Old Ironsides invests directly by forming joint ventures and operating companies alongside management teams. It does not market itself as a fund-of-funds investor and does not advertise a strategy of committing to third-party energy funds.

What investment stages and structures does Old Ironsides Energy typically target?

The firm targets both upstream and midstream assets, forming new operating companies or asset-level joint ventures. It focuses on established management teams with basin-specific development plans rather than early-stage exploration concepts. Disclosed structures include direct co-investment-style partnerships rather than majority-control buyouts.

Which basins and geographies does Old Ironsides Energy invest in?

Old Ironsides invests exclusively in North America. Its upstream portfolio companies have drilled and developed acreage across the Permian Basin, Powder River Basin, DJ Basin, Piceance Basin, Eagle Ford shale, East Texas, northwest Louisiana, and the Mid-Continent, as disclosed on its website.

Does Old Ironsides Energy invest in energy transition or renewables?

Old Ironsides does not publicly disclose investments in renewable energy or energy transition themes. Its stated strategy centers on upstream oil and gas development and midstream infrastructure such as crude oil gathering, natural gas processing, and produced water disposal, with no mention of solar, wind, carbon capture, or similar sectors.

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