and Oklahoma Gas Company. Braden had been an executive of Standard Oil Company and Barnsdall an oil producer. ONG built a natural gas pipeline from the Osage fields to Oklahoma City which went into service December 28, 1907. ONG extended the line to Guthrie and Shawnee. It also built the first gas pipeline compressor station in the state in 1910. Braden followed Flynn as president of the company. ONG continued to build pipelines throughout Oklahoma. By the time Braden retired in 1921, ONG owned over of lines and served over a half million customers in 48 of the state's 77 counties. In 1928, it built its noted headquarters building in Tulsa. It reorganized several times, first becoming a Maryland Corporation, then a Delaware Corporation. In December 1980, the Oklahoma Natural Gas board voted to reorganize as a holding company, Oneok Inc. Oklahoma Natural Gas became Oneok's leading subsidiary, headquartered in Oklahoma City. The parent company is headquartered in Tulsa. In 1996, Oneok acquired the natural gas operations of Kansas utility Western Resources (now Westar Energy) and reorganized them as Kansas Gas Service. In 2003, it acquired the Texas properties of Southern Union Gas, which became another Oneok operating company, Texas Gas service. In 2007, Fortune magazine named Oneok the most admired company in the energy industry. In February 2014, Oneok spun off its natural gas distribution companies–Oklahoma Natural Gas, Kansas Gas Service, and Texas Gas Services–into a separate publicly traded company, ONE Gas. For all intents and purposes, Oneok had spun out the core of the original Oklahoma Natural Gas. For many years until 2017, Oneok was an MLP and issued its holders a K-1 every year. That year it became a regular company (C-corporation) and it issues its stockholders a yearly 1099 summarizing their income from the company. Notes See also Guardian Pipeline Oklahoma Natural Gas Company Building ONE Gas References External links Official Website 01 Energy companies of the United States Natural gas companies of the United States Natural gas pipeline companies Petroleum in Oklahoma Companies based in Tulsa, Oklahoma Non-renewable resource companies established in 1906 American companies established in 1906 1906 establishments in Oklahoma Territory Companies listed on the New York Stock Exchange