Williams Hosting Analyst Day May 21; Presentations, Additional Financial Guidance Now Available

  Williams Hosting Analyst Day May 21; Presentations, Additional Financial
  Guidance Now Available

Business Wire

TULSA, Okla. -- May 20, 2013

Williams (NYSE:WMB) is hosting its annual Analyst Day event tomorrow, May 21,
beginning at approximately 8:45 a.m. EDT. During Analyst Day, Williams'
management will give in-depth presentations covering all of Williams' and
Williams Partners L.P.'s (NYSE:WPZ) energy infrastructure businesses.
Additionally, management of Access Midstream Partners, L.P. (NYSE: ACMP) will
provide a presentation on ACMP’s business as Williams has a significant
investment in ACMP.

The presentations for Analyst Day are now available on www.williams.com and
www.williamslp.com. The presentations contain financial guidance consistent
with guidance issued earlier in May for years 2013-2015 as well as additional
information regarding business segments.

A link to a live webcast of the event will be available at both web sites
tomorrow morning.

Tomorrow's topics and presenters will include:

  *CEO perspective: Alan Armstrong, president and chief executive officer
  *Williams NGL & Petchem Services: Randy Newcomer, vice president, NGL &
    Petchem Services; and John Dearborn, senior vice president, NGL & Petchem
  *Williams Partners Northeast G&P: Frank Billings, senior vice president,
    Northeast G&P
  *Williams Partners West: Allison Bridges, senior vice president, West
  *Williams Partners Atlantic-Gulf: Rory Miller, senior vice president,
  *Access Midstream Partners: Michael Stice, chief executive officer, ACMP
  *Williams Partners and Williams financial outlook, Q&A session: Don
    Chappel, chief financial officer; and Alan Armstrong, chief executive

A replay of the Analyst Day webcast will be available for two weeks following
the event at www.williams.com and www.williamslp.com.

About Williams (NYSE: WMB)

Williams is one of the leading energy infrastructure companies in North
America. It owns interests in or operates 15,000 miles of interstate gas
pipelines, 1,000 miles of NGL transportation pipelines, and more than 10,000
miles of oil and gas gathering pipelines. The company’s facilities have daily
gas processing capacity of 6.6 billion cubic feet of natural gas and NGL
production of more than 200,000 barrels per day. Williams owns approximately
68 percent of Williams Partners L.P. (NYSE: WPZ), one of the largest
diversified energy master limited partnerships. Williams Partners owns most of
Williams’ interstate gas pipeline and domestic midstream assets.The company’s
headquarters is in Tulsa, Okla. For more information, visit www.williams.com,
where the company routinely posts important information.

About Williams Partners L.P. (NYSE: WPZ)

Williams Partners L.P. is a leading diversified master limited partnership
focused on natural gas transportation; gathering, treating, and processing;
storage; natural gas liquid (NGL) fractionation; and oil transportation. The
partnership owns interests in three major interstate natural gas pipelines
that, combined, deliver 14 percent of the natural gas consumed in the United
States. The partnership’s gathering and processing assets include large-scale
operations in the U.S. Rocky Mountains and both onshore and offshore along the
Gulf of Mexico. Williams (NYSE: WMB) owns approximately 68 percent of Williams
Partners, including the general-partner interest. More information is
available at www.williamslp.com, where the partnership routinely posts
important information.

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 Securities and Exchange Commission.


Media Contact:
Tom Droege, 918-573-4034
Investor Contacts:
John Porter, 918-573-0797
Sharna Reingold, 918-573-2078
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