# Rockcliff Energy

Rockcliff Energy is a Private Equity based in Houston, United States.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Houston, United States
- **Region:** North America
- **Address:** 700 Milam Street, Suite 2000, Houston, Texas 77002, United States
- **Founded:** 2024
- **Assets under management:** Undisclosed
- **Website:** rockcliffenergy.com
- **LinkedIn:** https://www.linkedin.com/company/rockcliff-energy

## Regulatory record

- **Reports private funds:** No

## About

Rockcliff Energy III LLC (“Rockcliff”) was formed in 2024 and is an oil and natural gas company backed by equity commitments from long-time financial sponsor Quantum Capital Group. The Rockcliff management team possesses an extensive history of responsibly operating unconventional oil and natural gas assets of significant scale in the Lower 48 United States.

## Sectors

- Energy Transition & Renewables

## People

- Sheldon Burleson — President & Chief Executive Officer
- Michael Marziani — Chief Financial Officer
- Mitch New — Senior Vice President - Development
- Wakeford Thompson — Vice President - Business Development
- Ryan Papetti — Vice President - Marketing
- Brian Lageman — Vice President - Operations
- Jon Sivertson — Vice President - Land
- Jennifer Mosley — General Counsel
- Kevin Johnson — Chief Technology Officer
- Alan Smith — Executive Chairman

## Questions

### Who runs investment and operating decisions at Rockcliff Energy?

The firm has not publicly named its current management team or board. Its website references an experienced management team responsible for building ten prior companies, but individual names and titles are absent from available materials.

### What asset classes and geographies does Rockcliff Energy target?

Rockcliff is an upstream exploration and production company focused on unconventional oil and natural gas assets in the Lower 48 United States. It emphasizes clean-burning natural gas as a core fuel. The firm does not disclose a breakdown by basin or asset class beyond this general mandate.

### Does Rockcliff Energy participate in fund commitments or only direct deals?

Rockcliff operates as a privately funded exploration and production company, not as a fund-of-funds or LP allocator. It deploys equity commitments from Quantum Capital Group directly into oil and gas assets, though the precise structure — direct acquisitions, operated joint ventures, or otherwise — is not detailed publicly.

## Related profiles

- [Rockbridge Growth Equity](https://altss.com/profile/rockbridge-growth-equity)
- [Rock Creek Capital](https://altss.com/profile/rock-creek-capital)

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Last updated: 2026-08-11T15:07:57.118Z

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