Williams Partners Announces Redemption of 4.875% Senior Notes due 2024

TULSA, Okla.–(BUSINESS WIRE)–Williams Partners L.P. (NYSE: WPZ) and ACMP Finance Corp. (collectively,
the “Issuers”) announced today that they have issued a notice of
redemption (the “Notice of Redemption”) to holders of the Issuers’
4.875% Senior Notes due 2024 (the “Notes”), stating that the Issuers
will redeem all of the outstanding Notes for cash on March 28, 2018 (the
“Redemption Date”) at a redemption price equal to the sum of the
principal amount of the Notes plus the excess, if any, of (a) the
present value at such time of (i) the redemption price of such Note at
March 15, 2019 (as set forth in the indenture governing the Notes (the
“Indenture”)) plus (ii) any required interest payments due on such Note
through March 15, 2019 (except for currently accrued and unpaid
interest), computed using a discount rate equal to the Treasury Rate (as
defined in the Indenture) plus 50 basis points, discounted to the
Redemption Date on a semi-annual basis (assuming a 360-day year
consisting of twelve 30-day months), over (b) the principal amount of
such Note, plus accrued and unpaid interest, if any, to the Redemption
Date. The Issuers will calculate the Treasury Rate no later than the
second Business Day (as defined in the Indenture) preceding the
Redemption Date.

The terms and conditions of the redemption are fully described in the
Notice of Redemption. Beneficial holders with any questions about the
redemption should contact their respective brokerage firm or financial
institution.

This press release is for informational purposes only and does not
constitute an offer to purchase the Notes or any other securities.

About Williams Partners

Williams Partners is an industry-leading, large-cap natural gas
infrastructure master limited partnership with a strong growth outlook
and major positions in key U.S. supply basins. Williams Partners has
operations across the natural gas value chain including gathering,
processing and interstate transportation of natural gas and natural gas
liquids. Williams Partners owns and operates more than 33,000 miles of
pipelines system wide – including the nation’s largest volume and
fastest growing pipeline – providing natural gas for clean-power
generation, heating and industrial use. Williams Partners’ operations
touch approximately 30 percent of U.S. natural gas. Tulsa, Okla.-based
Williams (NYSE: WMB), a premier provider of large-scale U.S. natural gas
infrastructure, owns approximately 74 percent of Williams Partners.

Portions of this document may constitute “forward-looking statements”
as defined by federal law. Although the partnership believes any such
statements are based on reasonable assumptions, there is no assurance
that actual outcomes will not be materially different. Additional
information about issues that could lead to material changes in
performance is contained in the partnership’s annual and quarterly
reports filed with the Securities and Exchange Commission.

Contacts

Williams Partners
Media Contact:
Keith Isbell,
918-573-7308
or
Investor Contact:
Brett Krieg,
918-573-4614