Natural Gas Services Group, Inc. (NGS) demonstrated near double-digit revenue growth in 2025 driven by increased rental utilization and fleet horsepower, primarily servicing major customers in the Permian Basin. The company’s core business centers on long-term compressor rentals supported by ongoing maintenance and rebuild programs. However, a surge in capital expenditures to expand the rental fleet has led to negative free cash flow despite strong operating cash flow, while customer concentration and cyclicality in oil and gas production pose structural risks. Monitoring unit utilization trends, contract renewals, and capital discipline will be essential as NGS navigates its growth trajectory.