The U.S. upstream mergers and acquisitions (M&A) market experienced a significant resurgence in the fourth quarter of 2025. Announced deals during this period totaled $23.5 billion. This robust activity propelled the sector’s total M&A volume for the entire year to $65 billion. Analytics firm Enverus released these findings on Wednesday.

Fourth Quarter Momentum
The market’s performance in late 2025 marked a clear turnaround. This rebound followed a period of slowed activity during the middle of the year. The substantial fourth-quarter figures highlight a renewed confidence among investors.
Annual Market Performance
Total M&A activity for 2025 reached an impressive $65 billion. This full-year sum underscores the underlying strength of the upstream sector. Despite the mid-year dip, the market demonstrated its capacity for significant capital movement.
Key Drivers of the Recovery
Motivated buyers played a crucial role in the market’s fourth-quarter recovery. These entities actively sought new opportunities within the upstream segment. Their strategic investments fueled the increased deal volume reported by Enverus.
Private Equity’s Influence
Notably, private equity teams contributed significantly to this buying spree. Many of these teams had recently received new funding. This fresh capital empowered them to pursue acquisitions vigorously. Their participation helped drive the market’s strong finish to the year.
Enverus Analysis Highlights
Enverus, a leading analytics firm, compiled and reported these market figures. Their Wednesday announcement provides a comprehensive overview of the sector. The data offers valuable insights into the dynamics of U.S. upstream M&A for 2025.



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