Revised Time: October 27 Arconic 2016 Investor Event

October 21, 2016

Alcoa Inc. (NYSE:AA) previously announced that future company Arconic
will host a global investor webcast on October 27. The time for this
event has been revised to 8:00 AM. Details are below.

Arconic Global Investor Webcast

Thursday, October 27 at 8:00 AM EDT

Webcast link: www.alcoa.com/arconicinvestorlaunch

At the event, management will discuss Arconic’s leadership in
multi-material, precision-engineered products and solutions as well as
its strengths, strategies, expectations and outlook. Presenters will be:

  • Klaus Kleinfeld, future Arconic Chairman and Chief Executive
    Officer and current Chairman and Chief Executive Officer, Alcoa Inc.
  • Ken Giacobbe, future Arconic Executive Vice President and Chief
    Financial Officer and current Chief Financial Officer, Alcoa
    Engineered Products and Solutions

A replay and archived presentation slides of the webcast will be
available on www.alcoa.com
following its conclusion.

The separation of Alcoa Inc. into two standalone public companies is
scheduled to become effective before the opening of the market on
November 1, 2016. Arconic will trade on the New York Stock Exchange
under the symbol “ARNC.”

In preparation for the separation, Arconic has commenced a series of
investor meetings. These presentation materials are currently available
on www.alcoa.com.

Dissemination of Company Information

Alcoa Inc. intends to make future announcements regarding Company
developments and financial performance through its website at www.alcoa.com.

About Alcoa

A global leader in lightweight metals technology, engineering and
manufacturing, Alcoa innovates multi-material solutions that advance our
world. Our technologies enhance transportation, from automotive and
commercial transport to air and space travel, and improve industrial and
consumer electronics products. We enable smart buildings, sustainable
food and beverage packaging, high-performance defense vehicles across
air, land and sea, deeper oil and gas drilling and more efficient power
generation. We pioneered the aluminum industry over 125 years ago, and
today, our approximately 57,000 people in 30 countries deliver value-add
products made of titanium, nickel and aluminum, and produce
best-in-class bauxite, alumina and primary aluminum products. For more
information, visit www.alcoa.com,
follow @Alcoa on Twitter at www.twitter.com/Alcoa
and follow us on Facebook at www.facebook.com/Alcoa.

We have included the above website addresses only as inactive textual
references and do not intend these to be active links to such websites.
Information contained on such websites or that can be accessed through
such websites does not constitute a part of this press release.



Alcoa Inc.
Investor Contact
Matthew Garth, 212-836-2714
Matthew.Garth@arconic.com
or
Media Contact
Shona Sabnis, 212-836-2626
Shona.Sabnis@arconic.com