Occidental Acquires CrownRock L.P.

Occidental Agrees to Acquire Carbon Engineering for Approximately $1.1 Billion

August 15, 2023

Energy

Occidental (through a wholly owned subsidiary) has entered into a definitive agreement to acquire Carbon Engineering Ltd. for approximately $1.1 billion in cash, payable in three roughly equal annual installments. The deal — which will make Carbon Engineering a subsidiary of Oxy Low Carbon Ventures upon closing — is intended to accelerate deployment and commercialization of direct air capture (DAC) technology and expand Occidental's low-carbon capabilities.

Stonepeak Acquires Oryx Midstream for Approximately $3.6 Billion

April 2, 2019

Energy

Funds managed by Stonepeak Infrastructure Partners agreed to acquire substantially all assets of Oryx Southern Delaware Holdings LLC and Oryx Delaware Holdings LLC (collectively, Oryx) for about $3.6 billion. Sellers include affiliates of Quantum Energy Partners, Post Oak Energy Capital, Concho Resources and WPX Energy; Oryx will remain headquartered in Midland, Texas with its leadership team continuing in place and investing alongside Stonepeak.

Crestwood Completes Acquisition of Oasis Midstream

February 1, 2022

Energy

Crestwood Equity Partners LP completed its previously announced merger with Oasis Midstream Partners LP, combining the companies to expand Crestwood's scale and competitive position in the Williston and Delaware Basins. The transaction is expected to deliver roughly $45 million of operational and commercial synergies and to enhance the combined company's financial strength and flexibility.

Berkshire Hathaway Acquires OxyChem from Occidental

January 3, 2026

Manufacturing

Berkshire Hathaway has completed the acquisition of OxyChem from Occidental for $9.7 billion, subject to customary post-closing purchase price adjustments. OxyChem, headquartered in Dallas, Texas, is a major U.S. chemical manufacturer (PVC, chlor-alkali, chlorinated organics, calcium chloride) with operations across the U.S., Canada and Latin America and will remain led by CEO Wade Alleman.

Royal Gold Acquires Sandstorm Gold Ltd. and Horizon Copper Corp.

October 20, 2025

Energy

Royal Gold, Inc. completed the previously announced acquisitions of Sandstorm Gold Ltd. and Horizon Copper Corp., issuing approximately 18.6 million shares to Sandstorm shareholders and paying roughly $126 million in cash consideration for Horizon. The transactions increase Royal Gold's scale and diversification in precious metals streaming and royalties; Sandstorm and Horizon have requested delisting of their public shares following closing.

Audax Private Equity Acquires Monarch Landscape Companies from One Rock Capital Partners

April 1, 2022

Environmental Services

Audax Private Equity has acquired Monarch Landscape Companies, a commercial landscaping platform serving customers across the western United States, from One Rock Capital Partners. One Rock formed Monarch in 2015, led by CEO Brian Helgoe, and during its ownership the company completed ~10 acquisitions, deployed operations technology, and scaled into a multi-state commercial landscape services platform.