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ONEOK, Inc. (NYSE: OKE) is a leading midstream service provider and owner of one of the nation's premier natural gas liquids (NGL) systems, connecting NGL supply in the Rocky Mountain, Mid-Continent and Permian regions with key market centers and an extensive network of natural gas gathering, processing, storage and transportation assets. Following its acquisition of Magellan Midstream Partners in 2023, ONEOK became one of the largest midstream energy companies in the U.S., with a more diversified portfolio including refined products and crude oil transportation. The company strives to provide safe, reliable, and environmentally responsible energy infrastructure solutions that benefit its customers, employees, communities, and investors.
The headquarters serves as the central hub for ONEOK's corporate management, strategic planning, financial operations, investor relations, legal, human resources, and administrative functions overseeing its extensive midstream operations across the United States.
ONEOK Plaza is a prominent multi-story office building in downtown Tulsa, offering modern office spaces, conference facilities, and amenities designed to support a productive and collaborative workforce. It stands as a recognizable part of the Tulsa skyline.
ONEOK aims to foster a work culture centered on safety, integrity, inclusion, and excellence. Employees at the headquarters experience a professional environment focused on collaboration, innovation in the energy sector, strategic growth, and active community engagement.
The Tulsa headquarters is highly significant as it centralizes the leadership and decision-making for a company operating critical energy infrastructure across multiple states. It plays a key role in navigating the complexities of the U.S. energy market and executing the company's long-term strategy.
ONEOK's physical assets and direct operations are primarily concentrated within the United States, where it operates an extensive network of natural gas, NGL, refined products, and crude oil pipelines and facilities. While its core business is domestic, ONEOK plays a role in the broader North American and global energy markets. For instance, its infrastructure supports the transportation of commodities to coastal areas for export, connecting U.S. energy supplies with international demand. The company's performance and strategy are also influenced by global energy prices and trade dynamics.
100 West Fifth Street
Tulsa
Oklahoma
USA
Address: 9 Greenway Plaza, Suite 800, Houston, TX 77046 (Post-Magellan merger, this is a significant office)
Supports ONEOK's extensive presence in the Gulf Coast energy market, facilitating access to critical infrastructure, petrochemical complexes, refineries, and export terminals. Houston is a major center for the energy industry.
Address: Regional operational offices support activities in the area; specific public-facing addresses for purely operational centers vary. Example: 5613 DTC Parkway, Suite 600, Greenwood Village, CO 80111.
Oversees critical midstream infrastructure connecting natural gas and NGL production in the Rockies to broader markets, supporting producers and end-users in the region.
Address: Various field and operational offices supporting Permian Basin activities rather than a single large corporate office.
Crucial for ONEOK's footprint in the Permian, enabling the movement of hydrocarbons from wellhead to market centers and processing facilities.
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As of April 2025, ONEOK' leadership includes:
ONEOK has been backed by several prominent investors over the years, including:
The most significant executive team developments in the last 12 months for ONEOK were primarily related to the completion of its acquisition of Magellan Midstream Partners in September 2023. This resulted in the confirmation of ONEOK's existing leadership in their roles for the combined entity and the departure of key executives from Magellan Midstream Partners.
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ONEOK, Inc. typically utilizes a standard corporate email format for its employees, which is commonly based on the employee's name. The most frequently observed and generally accepted format is the 'first name.last name' convention followed by the company's domain.
first.last@oneok.com
Format
john.smith@oneok.com
Example
90%
Success rate
ONEOK Press Release • April 30, 2024
ONEOK announced its first-quarter 2024 financial results, highlighting strong performance with net income of $639 million. The company also increased its 2024 net income and adjusted EBITDA guidance, citing positive contributions from all business segments and synergies from the Magellan acquisition....more
ONEOK Press Release • December 4, 2023
ONEOK, Inc. announced a binding open season for the Saguaro Connector Pipeline, a proposed intrastate natural gas pipeline project intended to transport natural gas from the Waha Hub in West Texas to the U.S. and Mexico border, connecting with a new pipeline in Mexico for export to LNG facilities on the West Coast of Mexico....more
ONEOK Press Release • September 25, 2023
ONEOK, Inc. successfully completed its acquisition of Magellan Midstream Partners, L.P., creating a more diversified North American midstream infrastructure company with approximately 50,000 miles of pipelines. The transaction was valued at approximately $18.8 billion....more
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