At Open Water, we believe there is a unique and sustained opportunity to capitalize on changing energy fundamentals today.  By combining our diverse engineering, underwriting, and structuring backgrounds, our team can deliver differentiated capital solutions with ESG-conscious exposure to the entire energy value chain.

The Open Water Difference

We can perform more robust diligence with a unique appreciation for technical risk than finance-oriented firms.  Our firm can underwrite across a variety of basins and verticals, mitigating concentration and portfolio risk.

We can lever our experiences to create more successful investments with our operating partners. Our industry relationships allow us to provide unique insight into improving operational performance.

We have the skills and people to ensure our investments are protected.  Our team has physically operated assets in challenging environments and can seamlessly step into controlling positions.

Our Commitment to ESG

At Open Water, we believe it is incumbent upon us to be good stewards of our limited partners’ capital and the communities in which we work while maintaining the highest safety standards of our operating partners. Further, we believe it is our responsibility to promote social and environmental stewardship to our employees and our partners.

Our team has established relationships with the various regulatory agencies and environmental consultants in our focus basins, enabling us to complete thorough due diligence prior to consummating any financing.  Additionally, we’ll work with our operating partners to implement the latest technologies as it relates to water recycling and CO2 emission reductions.


Mr. Rockey has more than 15 years of experience sourcing and evaluating potential acquisition opportunities, evaluating marketed and unsolicited transactions from $500K-$1B in every major oil and gas basin in North America. He served most recently as EVP of Corporate Development and Co-Head of M&A at Fleur de Lis Energy where he was also a member of the firm’s valuation and investment committees. In that role, he led the underwriting, acquisition, and integration of the firm’s largest transaction, a $703MM package of CO2 EOR assets in the Rockies which included upstream, midstream, and power components. Additionally, he was responsible for strategic direction of the A&D team and oversight of the firm’s Operations, Corporate Exploitation, and Investor Relations divisions. Prior to Fleur de Lis Energy, Robby served in operations and business development roles with UOGG, LLC and Merit Energy Company. He holds a BS in Mechanical Engineering from the University of Oklahoma, a M.S in Finance from the University of Texas-Dallas and is a member of the University of Wyoming’s EORI Technical Advisory Board.

Managing Partner, Engineering

Mr. Lowenthal has 10 years as an energy credit professional across multiple investment strategies. He most recently served as a Vice President at Riverstone Credit Partners (“RCP”), a +$2B AUM diversified energy credit strategy, and the credit and capital markets affiliate of Riverstone Holdings, a +$39B energy alternative asset manager. He was the fifth employee at RCP. At RCP, he was responsible for originating, underwriting, and executing direct investments in energy and power companies. Additionally, he helped lead the liquid secondary trading strategy for RCP. In this capacity, he oversaw the deployment of significant capital to the liquid secondary markets, one of the most successful strategies at the fund, and was personally responsible for identifying, structuring, and executing trades. Prior to RCP, he was an investment associate at PennantPark Investment Advisors, a +$2B asset manager, and focused on direct lending in the energy and infrastructure space. He began his career as an investment banking analyst at Nomura Securities, specializing in natural resources leveraged finance. He holds a BA from Columbia University.

Managing Partner, Credit

Ms. Summers has over 20 years of experience in leading and managing multidisciplined teams within the energy industry. Most recently, Ms. Summers led the Oil & Gas investing unit of a global financial services company, ORIX Corporation USA. As a founding member of that team, she was responsible for all aspects of oil and gas investments including business and financial due diligence, industry analysis, reserve and financial modelling, valuation, and P&L management. Prior to Orix, she spent 1 year at CLG Energy Finance, an affiliate of Beal Bank, focused on E&P lending. Prior to CLG, Ms. Summers spent 17 years with Netherland, Sewell & Associates. While at NSAI, her areas of expertise included building complex geocellular reservoir models integrating geophysical, petrophysical, and engineering data for reservoir simulation and volumetrics on oil and gas fields from basins worldwide.   Ms. Summers received a Bachelor of Science from The University of Texas at Arlington and is actively involved in MyPossibilities, a Texas-based non-profit supporting education and job placement for disabled adults.

Partner, Engineering