Williams’ Transco Commences Registered Exchange Offer for its 5.100% Senior Notes Due 2036 and 5.750% Senior Notes Due 2056 (Form 8-K)

Williams' Transco Commences Registered Exchange Offer for its 5.100% Senior Notes Due 2036 and 5.750% Senior Notes Due 2056

TULSA, Okla. - Transcontinental Gas Pipe Line Company, LLC ("Transco"), a wholly owned subsidiary of The Williams Companies, Inc. ("Williams") (NYSE: WMB), announced today that it has commenced an offer to exchange any and all of its $1.0 billion in aggregate principal amount of outstanding 5.100 percent Senior Notes due 2036 (the "Original 2036 Notes") and $700 million in aggregate principal amount of outstanding 5.750 percent Senior Notes due 2056 (the "Original 2056 Notes" and, together with the Original 2036 Notes, the "Original Notes") for an equal amount of the applicable series of its registered 5.100 percent Senior Notes due 2036 (the "2036 Exchange Notes") and 5.750 percent Senior Notes due 2056 (the "2056 Exchange Notes" and, together with the 2036 Exchange Notes, the "Exchange Notes").

The terms of the Exchange Notes are identical in all material respects to those of the applicable series of the Original Notes, except that the Exchange Notes have been registered under the Securities Act of 1933, as amended, and the transfer restrictions, restrictive legends, registration rights and additional interest provisions relating to the Original Notes do not apply to the Exchange Notes. The purpose of the Exchange Offer is to fulfill Transco's obligations under the registration rights agreement entered into in connection with the issuance of the Original Notes. Transco will not receive any proceeds from the exchange offer.

The exchange offer will expire at 5:00 p.m. Eastern Time on April 6, 2026, unless extended (such date and time, as may be extended, the "Expiration Date"). The settlement date for the exchange offer will occur promptly following the Expiration Date. The terms of the exchange offer and other information relating to Transco and the Exchange Notes are set forth in a prospectus dated March 9, 2026, a copy of which has been filed with the Securities and Exchange Commission. Transco has not authorized any person to provide information other than as set forth in the prospectus.

Copies of the prospectus and the transmittal letter governing the exchange offer can be obtained from the exchange agent, The Bank of New York Mellon Trust Company, N.A., by calling (412) 236-4893, by writing via regular or certified mail, or overnight courier, to The Bank of New York Mellon, Attn: Corporate Trust Reorg - Sanela Sadikovic, 500 Ross Street, Suite 625, Pittsburgh, PA 15262, or by emailing [email protected].