Williams (NYSE: WMB) today announced that it has completed a public offering of $850 million of its 3.7-percent senior notes due 2023 at a price of 99.722 percent of par. Williams intends to use the net proceeds from the offering to finance a portion of its investments in Access Midstream Partners GP, L.L.C. and Access Midstream Partners, L.P. that were previously announced on Dec. 11, 2012. UBS Investment Bank, Barclays and Citigroup acted as joint book-running managers for the offering. This news release is neither an offer to sell nor a solicitation of an offer to buy any of these securities and shall not constitute an offer, solicitation or sale in any jurisdiction in which such offer, solicitation or sale is unlawful. A copy of the prospectus supplement and related base prospectus may be obtained on the Securities and Exchange Commission website at www.sec.gov or from the underwriters by contacting: UBS Investment BankAttention: Prospectus Department299 Park AvenueNew York, NY 10171Phone: 888-827-7275 Barclaysc/o Broadridge Financial Solutions1155 Long Island AvenueEdgewood, NY 11717Phone: 888-603-5847E-mail: Barclaysprospectus@broadridge.com Citigroupc/o Broadridge Financial Solutions1155 Long Island AvenueEdgewood, NY 11717Phone: 800-831-9146Email: email@example.com Portions of this document may constitute "forward-looking statements" as defined by federal law. Although the company believes any such statements are based on reasonable assumptions, there is no assurance that actual outcomes will not be materially different. Any such statements are made in reliance on the "safe harbor" protections provided under the Private Securities Reform Act of 1995. Additional information about issues that could lead to material changes in performance is contained in the company's annual reports filed with the SEC.