OLD IRONSIDES ENERGY, LLC
OLD IRONSIDES ENERGY, LLC is a Series C+ and buyout fund in the US investing in Climate, oil-and-gas, midstream and upstream.
- Stages
- Series C+, buyout
- Sectors
- Climate, oil-and-gas, midstream, upstream
- Invests in
- US-wide
- Actively investing
- Yes
- Founded
- 2013
- Assets under management
- $1.75B
- Website
- oldironsidesenergy.com
Check size not disclosed
Thesis
Old Ironsides Energy, LLC is a private equity firm founded in August 2013 and headquartered in Waltham, Massachusetts. They specialize in the upstream and midstream sectors of the oil and gas industry, focusing on acquiring and developing oil and gas assets in North America. Their investment strategy involves partnering with experienced management teams who have a proven track record in specific geographic areas and plays. Old Ironsides Energy operates with a collaborative, long-term partnership approach. They have made approximately 39 investments to date. OIE Fund II received commitments of approximately $1.327 billion. As of December 31, 2025, the firm managed approximately $1.21 billion in portfolio assets, with AUM reported as approximately $1.75 billion in April 2020. They are described as an "infrastructure" investor and a "PE/Buyout" firm, preferring later-stage or growth-oriented opportunities.
Common questions
Does OLD IRONSIDES ENERGY, LLC invest at the Series C+ stage?
Yes. OLD IRONSIDES ENERGY, LLC lists Series C+ and buyout among the stages it invests in.
Where does OLD IRONSIDES ENERGY, LLC invest?
OLD IRONSIDES ENERGY, LLC invests in the US.