ONEOK Completes $4.425 Billion Brazos Midstream Acquisition to Cement Permian Midland Expansion

ONEOK (NYSE: OKE) has officially completed its acquisition of Brazos Midstream’s Permian Midland Basin natural gas gathering and processing assets for approximately $4.425 billion in cash, a deal announced on October 6, 2026. The acquisition was built upon a transformational $9 billion minority equity investment from Apollo, which closed earlier in September, and allows ONEOK to deploy $5 billion of those proceeds toward debt reduction and balance-sheet strengthening.

Strategic Expansion in the Permian Midland Basin

This acquisition significantly bolsters ONEOK’s footprint in one of North America’s most prolific production zones. The assets include a premier Permian Midland platform supported by long-term, fixed-fee contracts over approximately 600,000 dedicated acres with an average remaining term of over 12 years, and backed by active drilling from producers such as ExxonMobil, Diamondback Energy and Double Eagle. Total gathering infrastructure spans about 700 miles and provides roughly 1.2 Bcf/d of processing capacity, to be supported by the Cassidy II plant expected in Q3 2027. The acquisition more than doubles ONEOK’s Midland Basin processing capability to around 2.3 Bcf/d, establishing one of the region’s largest integrated midstream platforms.

Financial and Operational Implications

The structure of the Apollo equity investment includes a capped 7% internal rate of return for the investor over the first nine years, after which excess distributions accrete value to ONEOK’s common shareholders. The company will use $5 billion from the investment to pare down debt — reducing expected pro forma leverage to approximately 3.25x Debt-to-EBITDA — without issuing new equity. The transaction carries an implied acquisition multiple of about 7.5x estimated 2027 EBITDA (inclusive of roughly $80 million in synergies) and approximately 6.0x estimated 2028 EBITDA.

Recent Stock Performance and Investor Implications

As of October 9, 2026, ONEOK shares were trading at $89.80, down 0.36%. Though the acquisition closes this chapter of strategic expansion, the market reaction does not clearly indicate a direct causal shift. The move reinforces ONEOK’s long-term growth profile, strengthens its balance sheet and underpins continued focus on capital return flexibility, including potential dividend increases or share buybacks.

What to Watch Next

Looking ahead, investors should monitor the closing conditions (including Hart‑Scott‑Rodino approval), integration of the Brazos assets, synergy realization, and execution of the debt repayments. Additionally, the performance trajectory of the Cassidy II processing facility and the impact on fee‑based revenue streams from long‑dated contracts will be key performance indicators. With the Q3 2026 earnings call scheduled soon, market participants will also watch for updated guidance reflecting this strategic acquisition.