WILLIAMS COMPANIES, INC.

Overview

Williams Companies, Inc. is a U.S. energy infrastructure company focused on natural gas. Its midstream operations gather, treat and process natural gas, then transport and store it, alongside related marketing and trading services. Its interstate transmission and storage networks connect supply basins with utilities, power generators, industrial customers and other markets.[1]+2

The company’s assets and customers are primarily in the United States. Williams reports more than 32,000 pipeline miles, service to over 800 customers and more than 5,700 employees; it also says its infrastructure handles about one-third of U.S. natural gas.[4][5]

Williams describes its purpose as meeting the world’s need for “clean, affordable and reliable energy.” For the year ended December 31, 2025, it reported total revenue of $11.950 billion.[6][7] [1]+6

Products & services

Williams provides natural-gas transportation and storage through interstate pipeline systems including Transco, Northwest Pipeline, and MountainWest, as well as its 50% Gulfstream investment. Transco runs from Texas and the Gulf region through the Southeast and Atlantic seaboard to the New York metropolitan area.[8][9]

Its midstream services include natural-gas gathering, processing and treating, NGL fractionation and storage, and transportation. Northeast G&P serves the Marcellus and Utica regions; its West operations span basins including the DJ, Piceance, Barnett, Eagle Ford and Haynesville. The portfolio also includes Gulf Coast gas gathering and processing, crude-oil production handling and transportation, and NGL pipeline and storage interests.[10]+2

Williams also markets natural gas and NGLs and provides asset management, wholesale marketing, trading, risk management, storage and transportation services to utilities, municipalities, power generators, producers, and energy and petrochemical customers.[12]+2 In 2025, consolidated gathering averaged 4.16 Bcf/d, plant inlet gas volumes averaged 1.89 Bcf/d, and NGL production averaged 143 Mbbl/d. Named processing facilities include Markham, with 0.5 Bcf/d inlet capacity and 45 Mbbl/d NGL production capacity; Mobile Bay, with 0.7 Bcf/d and 35 Mbbl/d; and Discovery, with 0.6 Bcf/d and 35 Mbbl/d, respectively.[14][15]

For FY2025, customer-contract revenue included $3.721 billion from regulated interstate gas transportation and storage, $4.719 billion from gathering, processing, transportation, fractionation and storage services, and $6.459 billion from product sales—approximately 25.0%, 31.7% and 43.4% of customer-contract revenue, respectively.[16] In the six months ended June 30, 2026, service revenue was $4.385 billion (54.2%) and product sales were $3.712 billion (45.8%) of customer-contract revenue.[17] [8]+10

Geographic presence

Williams Companies, Inc.’s operating footprint is in the United States. Its headquarters are in Tulsa, Oklahoma, with major offices in Houston, Texas; Pittsburgh, Pennsylvania; and Salt Lake City, Utah.[18] Its pipeline and midstream assets span multiple U.S. regions: Transco runs from the Gulf Coast through the Southeast and Mid-Atlantic to the New York metropolitan area, while Northwest Pipeline runs from New Mexico and Colorado through the western states to the Canadian border near Sumas, Washington.[19][20]

Other significant operating areas include Gulf Coast gathering, processing and transportation assets; the Marcellus and Utica regions of the Northeast and Ohio Valley; and the DJ Basin, Piceance, Wamsutter, Barnett, Eagle Ford and Haynesville areas.[21]+2 The reviewed materials present revenue by business segment or service category rather than by geography and do not provide a geographic employee breakdown.[17][24] [18]+7

Business segments

Williams Companies reports four business segments in its 2025 annual report and six-month 2026 report. **Transmission, Power & Gulf** operates interstate gas pipelines and related storage, Gulf Coast gathering and processing, crude-oil handling and transportation, and Texas and Gulf Coast storage and pipelines; it also includes power projects under development. **Northeast G&P** gathers, processes, and fractionates natural gas in the Marcellus and Utica regions. **West** gathers, processes, and treats gas across several western and southern U.S. basins, and includes NGL storage and interests in fractionation and pipeline assets. **Gas & NGL Marketing Services** markets natural gas and NGLs and provides gas asset management, wholesale marketing and trading, storage, transportation, and market-optimization services.[8]+4

For the six months ended June 30, 2026, the four segments’ reported revenue totaled approximately $6.57 billion before other items and eliminations. Their approximate shares of that subtotal were **Transmission, Power & Gulf 43.0%**, **Northeast G&P 16.6%**, **West 22.5%**, and **Gas & NGL Marketing Services 17.8%**.[17] For full-year 2025, their shares of reportable-segment Modified EBITDA were approximately **51.0%, 27.8%, 17.0%, and 4.3%**, respectively; Modified EBITDA is the segment performance measure reported in the annual filing, rather than GAAP operating income.[25] [8]+6

Company history

Williams traces its origins to 1908, when brothers Miller and David Williams started a construction business in Fort Smith, Arkansas. The firm grew from building sidewalks into water and sewer work and pipeline construction; after the founders retired in 1949, the next generation took over, and the company was incorporated that year.[18][26]

A major shift from contractor to pipeline owner began in 1966, when Williams acquired the Great Lakes Pipe Line System. It spun off its construction business as Willbros in 1975, then expanded its interstate natural-gas network through the 1983 acquisition of Northwest Energy Company and the 1995 acquisition of Transco Energy Company.[18][26]

In 2001, Williams exited telecommunications and acquired Barrett Resources, adding natural-gas reserves; in 2003 it sold assets and reduced debt as it refocused on core natural-gas operations. The 2014 acquisition of a controlling interest in Access Midstream Partners expanded its gathering operations, and subsequent combinations with Williams Partners—including Williams’ 2018 acquisition of the partnership’s publicly held units—consolidated those assets under the parent company.[27][28]

After Alan Armstrong’s 14-year tenure as president and CEO, Williams named Chad Zamarin as his successor in May 2025, effective July 1.[29] [18]+4

Sources

• WILLIAMS COMPANIES, INC. — Full financial report (2025 Y)
  15 citations

  [1][2][3][7][8][9][10][11][12][13][14][15][16][18][25]
• www.williams.com[4]
• www.williams.com[5]
• www.williams.com[6]
• WILLIAMS COMPANIES, INC. — Full financial report (2026 Q 2)
  9 citations

  [17][19][20][21][22][23][24][27][28]
• www.williams.com[26]
• www.williams.com[29]