Boardwalk Buys Spire Marketing in $215M Deal to Expand Gas Footprint

HOUSTON, TX – March 30, 2026 – In a significant move to consolidate its position in the U.S. energy market, Boardwalk Pipelines, LP announced today it has entered into a definitive agreement to acquire Spire Marketing Inc. for $215 million in cash. The deal sees Boardwalk, a major operator of natural gas pipelines and storage, purchasing the gas marketing unit from Spire Inc. (NYSE: SR), which is strategically divesting the asset to concentrate on its core regulated utility operations.

The transaction, expected to close in the second calendar quarter of 2026, marks a pivotal step for both companies. For Boardwalk, it represents a deliberate push to integrate further along the natural gas value chain. For Spire, it is a calculated retreat from the competitive marketing segment to solidify its financial footing and simplify its business model.

Boardwalk's Strategic Expansion

Boardwalk's acquisition is about more than just adding a new business unit; it's a strategic play to enhance the value of its vast infrastructure. The company operates an extensive network of approximately 14,300 miles of pipelines and 205 billion cubic feet of underground natural gas storage capacity across the Gulf Coast, Midwest, and Southeast. By acquiring Spire Marketing, Boardwalk gains a direct commercial link to a diverse customer base of industrial clients, utilities, and power generators, primarily in the central and southern U.S.

This vertical integration is designed to create significant synergies. By combining its transportation and storage assets with a dedicated marketing and trading arm, Boardwalk can optimize the flow of natural gas across its system, enhance asset utilization, and offer more comprehensive, end-to-end energy solutions. This move strengthens its competitive position against other major integrated players and pure-play marketers like Tenaska, BP, and Shell Energy North America.

Scott Hallam, president and chief executive officer of Boardwalk Pipelines, framed the acquisition as a logical progression. "This is a step forward for Boardwalk as we continue to expand our participation across the natural gas value chain," Hallam stated. "By bringing on an experienced team with deep market expertise and established commercial capabilities, we seek to strengthen our asset optimization and more effectively serve our customers' increasingly complex energy needs."

The addition of Spire Marketing’s experienced team is a key component of the deal's value proposition, providing Boardwalk with immediate commercial capabilities and established customer relationships. "We were impressed by the strength and depth of Spire Marketing's management team, and we look forward to partnering with them as we build upon this platform," Hallam added.

Spire's Calculated Divestment

While Boardwalk expands, Spire Inc. is strategically contracting its focus. The sale of its marketing arm is a deliberate pivot toward the stability of its core business: serving 1.7 million homes and businesses as one of the country's largest publicly traded natural gas utilities. Divesting the more volatile marketing segment allows Spire to simplify its corporate structure and improve its risk profile.

"As we continue to sharpen our focus on our core regulated utility operations at Spire, we have entered into an agreement to sell our gas marketing business," said Scott Doyle, president and chief executive officer of Spire. "The sale simplifies our business mix, improves our risk profile and enhances long-term earnings visibility."

Financially, the $215 million in proceeds will be instrumental in funding Spire's other strategic initiatives, notably the planned acquisition of the Piedmont Natural Gas Tennessee business. Spire has also indicated it is exploring the sale of its natural gas storage facilities to further finance that purchase.

The divestiture will have a noticeable impact on Spire's financial outlook. The company revised its fiscal year 2027 adjusted earnings per share (EPS) guidance downward from a range of $5.65–$5.85 to $5.40–$5.60. However, Spire was quick to reaffirm its long-term adjusted EPS growth target of 5-7%, signaling to investors that the move is part of a long-term strategy for stable, predictable growth, rather than a sign of distress.

Navigating the Regulatory Landscape

The deal is not yet final, as it remains subject to customary closing conditions and regulatory approvals. Chief among these is clearance under the Hart-Scott-Rodino (HSR) Antitrust Improvements Act, which requires review by the Federal Trade Commission (FTC) or the Department of Justice (DOJ). Regulators will scrutinize the transaction to ensure it does not unduly harm competition within the natural gas marketing sector.

The terms of the agreement reflect an awareness of this regulatory hurdle. A termination fee of $12.9 million is payable by Boardwalk to Spire if the deal is terminated due to a failure to secure HSR clearance, a clause that allocates some of the regulatory risk. Given Boardwalk's significant infrastructure presence, federal agencies will likely conduct a thorough analysis of how integrating Spire's marketing operations could affect market dynamics and pricing for consumers.

Market Impact and the Future of Natural Gas

This acquisition unfolds within a robust and evolving U.S. natural gas market, valued at over $450 billion and projected to grow significantly by 2032. This growth is fueled by increasing demand for electricity generation, expanding liquified natural gas (LNG) exports, and continued industrial consumption. Transactions like this one reflect a broader industry trend where companies are optimizing their portfolios to either specialize or achieve greater scale through integration.

For Spire Marketing's employees and customers, leadership from both sides has emphasized a commitment to a smooth transition. "We are excited to join Boardwalk, which has such a positive industry presence and reputation to go along with a vision that recognizes the value and need for marketing and trading capabilities," said Pat Strange, president of Spire Marketing. He added, "We expect a seamless transition for our employees and clients as we join Boardwalk and continue to move our business forward."

By acquiring Spire Marketing, Boardwalk is better positioning itself to capitalize on the macro trends driving the natural gas industry. The ability to offer bundled services of gas supply, transportation, and storage provides a powerful competitive advantage, enabling the company to offer greater flexibility and reliability to customers navigating an increasingly complex energy landscape.