425: WES Acquires Aris Water Solutions for $1.5B

Western Midstream Partners, LP announced its acquisition of Aris Water Solutions, Inc. in a $1.5 billion equity-and-cash transaction, expanding its Delaware Basin footprint.

Summary

• Western Midstream Partners, LP (WES) has agreed to acquire Aris Water Solutions, Inc. (Aris) in an equity-and-cash transaction valued at $1.5 billion.
• The enterprise value of the transaction is approximately $2.0 billion.
• The acquisition represents a 10% premium to Aris's 30-day VWAP and a 23% premium to Aris's closing price on August 5, 2025.
• Aris shareholders will receive 0.625 common units of WES for each Aris share, with an option to elect cash at $25.00 per share, subject to proration, with a maximum total cash consideration of $415 million.
• Pro forma for the transaction, assuming maximum cash consideration, Aris shareholders will own approximately 7% of WES's outstanding common units.
• WES has secured support agreements from Aris shareholders representing approximately 42% of Aris's outstanding common stock, who have agreed to vote in favor of the transaction.
• The closing of the transaction is expected in 4Q25, contingent on customary closing conditions, regulatory approvals, and an Aris shareholder vote scheduled for October 14, 2025.

Sentiment

Score: 8

Explanation: The filing presents a highly positive outlook on a strategic acquisition, highlighting accretion, significant synergies, expanded market presence, and diversified revenue streams, while maintaining a strong balance sheet. The risks mentioned are standard for M&A and are appropriately disclosed.

Positives

• Creates a differentiated Delaware Basin produced-water system, enhancing WES's ability to compete for new business development opportunities.
• Establishes a fully integrated produced-water value chain through water gathering, disposal, recycle/reuse, beneficial reuse, industrial water, and long-haul transport via Pathfinder.
• Significantly expands WES's New Mexico footprint, unlocking new opportunities to be a one-stop shop for customers and grow natural-gas, crude-oil, and NGLs gathering and processing businesses.
• Diversifies WES's customer base through Aris's long-term contracts, acreage dedications, and minimum-volume commitments with investment-grade counterparties.
• McNeill Ranch provides access to significant long-term pore space and other surface use opportunities, adjacent to one of the fastest growing areas in the Permian Basin.
• The transaction is accretive to 2026E Free Cash Flow per unit.
• Represents approximately a 7.5x multiple on consensus 2026 EBITDA, inclusive of $40 million of estimated cost synergies.
• Maintains a strong, investment-grade balance sheet with pro forma net leverage of approximately 3.0x.
• Increases Delaware Basin fee-based cash flows and balances WES's product offering across commodities.
• Further system buildout coupled with incremental three-stream commercial opportunities are expected to deliver additional long-term synergies.
• Pro forma, the percentage of investment grade revenues increases from 70% to 79%.

Risks

• The expected timing and likelihood of completion of the transaction, including the timing, receipt, and terms of any required governmental and regulatory approvals that could reduce anticipated benefits or cause the parties to abandon the transaction.
• The ability to successfully integrate the businesses of WES and Aris.
• The occurrence of any event, change, or other circumstances that could give rise to the termination of the merger agreement.
• The possibility that stockholders of Aris may not approve the merger agreement.
• The risk that the parties may not be able to satisfy the conditions under the merger agreement in a timely manner or at all.
• Risks related to disruption of management time from ongoing business operations due to the transaction.
• The risk that any announcements relating to the transaction could have adverse effects on the market price of WES's common units or Aris's Class A common stock.
• The risk that the transaction and its announcement could have an adverse effect on the ability of WES and Aris to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers and on their operating results and businesses generally.
• The risk that the pending transaction could distract management of both entities and they will incur substantial costs.
• The risk that problems may arise in successfully integrating the businesses of the companies, which may result in the combined company not operating as effectively and efficiently as expected.
• The risk that the combined company may be unable to achieve synergies or it may take longer than expected to achieve those synergies.
• Pore space in the Delaware Basin is becoming more constrained both operationally and by regulation, making recycling and beneficial reuse efforts more critical.

Future Outlook

The combined company is expected to create a differentiated Delaware Basin produced-water system, enhance WES's ability to compete, expand its New Mexico footprint, and diversify its customer base. The transaction is anticipated to be accretive to 2026E Free Cash Flow per unit, maintain a strong balance sheet with approximately 3.0x pro forma net leverage, and deliver additional long-term synergies from system buildout and commercial opportunities. The Pathfinder pipeline is expected to enhance reuse and recycling opportunities, addressing growing water management needs in the basin.

Management Comments

• WES aims to create a differentiated Delaware Basin produced-water system, enhancing its ability to compete for new business development.
• The acquisition will create a fully integrated produced-water value chain.
• The transaction significantly expands WES's New Mexico footprint, unlocking new opportunities to be a one-stop shop for customers and grow natural-gas, crude-oil, and NGLs gathering and processing businesses.
• The acquisition diversifies WES's customer base through Aris's long-term contracts, acreage dedications, and minimum-volume commitments with investment-grade counterparties.
• The transaction is accretive to 2026E Free Cash Flow per unit and maintains a strong, investment-grade balance sheet.
• Further system buildout and incremental three-stream commercial opportunities are expected to deliver additional long-term synergies.

Industry Context

The Delaware Basin has the highest water-to-oil ratios (WORs) of any U.S. shale play, averaging 4.5x 5.5x, which results in over 18 MMBbls/d of produced water requiring management. Pore space for disposal is becoming increasingly constrained by operational and regulatory factors, making recycling and beneficial reuse efforts more critical. This acquisition, coupled with the Pathfinder pipeline, addresses a significant portion of these growing produced-water disposal and reuse needs, positioning WES as an integrated water-solutions midstream leader in a high-demand environment.

Comparison to Industry Standards

• WES is a leading midstream provider in the core of the Texas Delaware Basin.
• WES is among the Top Five in Natural-Gas Processing Capacity in the Delaware Basin, with 2,190 MMcf/d of processing capacity.
• WES is among the Top Two in Water Gathering & Disposal in the Delaware Basin, with 3,835 MBbls/d of disposal capacity into 131 wells.
• WES is one of the only midstream operators to provide natural-gas, crude-oil, and producer-water services (three-stream midstream provider).
• Aris has approximately 95% of forecasted 2025 Water Solutions volumes under long-term acreage dedications or minimum-volume commitments (MVCs), indicating strong contract stability compared to industry peers.
• Aris's contracts feature an approximate 10-year acreage-weighted remaining produced-water contract tenor and an approximate 8-year average remaining water solutions contract tenor, demonstrating long-term revenue visibility.

Stakeholder Impact

• Shareholders (WES): Expected accretion to 2026E Free Cash Flow per unit, maintenance of an investment-grade balance sheet, increased Delaware Basin exposure, and a more diversified customer base, potentially leading to enhanced long-term value.
• Shareholders (Aris): Will receive WES common units and/or cash, becoming WES shareholders (approximately 7% ownership pro forma), or receiving cash for their shares.
• Customers: Will benefit from a more integrated and expanded water solutions platform, potentially offering a 'one-stop shop' for midstream services in the Delaware Basin, improving operational efficiency and reliability.

Next Steps

• Aris's stockholders will vote on the transaction at a special meeting on October 14, 2025.
• Completion of customary closing conditions and regulatory approvals is required.
• The transaction is expected to close in 4Q25.
• Integration of the acquired businesses to achieve anticipated synergies and operational efficiencies.
• Further system buildout and pursuit of incremental three-stream commercial opportunities.

Key Dates

Recommendation

The acquisition of Aris Water Solutions by Western Midstream Partners is strategically sound, significantly expanding WES's critical water infrastructure in the high-growth Delaware Basin. The transaction is expected to be accretive to Free Cash Flow per unit by 2026, generate $40 million in cost synergies, and maintain a strong investment-grade balance sheet. The diversification of WES's customer base and increased exposure to fee-based cash flows from investment-grade counterparties enhance revenue stability and growth prospects. The combined entity's strengthened position as a leading three-stream midstream provider in a basin with increasing water management needs presents a compelling long-term value proposition for investors.

Keywords

Western Midstream Partners, WES, Aris Water Solutions, ARIS, Acquisition, Merger, Delaware Basin, Midstream, Produced Water, Water Solutions, Energy Infrastructure, Oil & Gas, Permian Basin, SEC Filing, Form 425