<SEC-DOCUMENT>0001144204-18-004360.txt : 20180129
<SEC-HEADER>0001144204-18-004360.hdr.sgml : 20180129
<ACCEPTANCE-DATETIME>20180129170952
ACCESSION NUMBER:		0001144204-18-004360
CONFORMED SUBMISSION TYPE:	S-8 POS
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20180129
DATE AS OF CHANGE:		20180129
EFFECTIVENESS DATE:		20180129

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Arconic Inc.
		CENTRAL INDEX KEY:			0000004281
		STANDARD INDUSTRIAL CLASSIFICATION:	ROLLING DRAWING & EXTRUDING OF NONFERROUS METALS [3350]
		IRS NUMBER:				250317820
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8 POS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-205829
		FILM NUMBER:		18556622

	BUSINESS ADDRESS:	
		STREET 1:		390 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022-4608
		BUSINESS PHONE:		2128362732

	MAIL ADDRESS:	
		STREET 1:		390 PARK AVENUE
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10022-4608

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALCOA INC.
		DATE OF NAME CHANGE:	20141003

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALCOA INC
		DATE OF NAME CHANGE:	19990105

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALUMINUM CO OF AMERICA
		DATE OF NAME CHANGE:	19920703
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8 POS
<SEQUENCE>1
<FILENAME>tv483171_s8pos.htm
<DESCRIPTION>S-8 POS
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
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<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0"></P>

<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 3pt; margin-bottom: 3pt"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>As filed with the Securities and Exchange
Commission </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>on January 29, 2018 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registration No. 333-205829</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registration No. 333-209777</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES SECURITIES AND EXCHANGE
COMMISSION </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, D.C. 20549 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POST-EFFECTIVE AMENDMENT NO. 1</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>TO FORM S-8 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>REGISTRATION STATEMENT </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNDER </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>THE SECURITIES ACT OF 1933 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ARCONIC INC. </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Exact name of registrant as specified
in its charter) </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR>
    <TD STYLE="width: 48%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 4%">&nbsp;</TD>
    <TD STYLE="width: 48%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="font-size: 10pt; text-align: center"><B>Delaware</B></TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: center"><B>25-0317820</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-size: 10pt; text-align: center"><B>(State of Incorporation)</B></TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt; text-align: center"><B>(I.R.S. Employer Identification No.)</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>390 Park Avenue </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>New York, New York 10022-4608</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Address of principal executive office,
including zip code)</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>RTI INTERNATIONAL METALS, INC. EMPLOYEE
SAVINGS AND INVESTMENT PLAN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>RTI BARGAINING UNIT EMPLOYEE SAVINGS
AND INVESTMENT PLAN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>RTI EMPLOYEE SAVINGS &amp; INVESTMENT
PLAN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Full Title of Plans) </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Katherine H. Ramundo</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Executive Vice President, Chief Legal
and Compliance Officer and Secretary</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>390 Park Avenue, </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>New York, New York 10022-4608</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(212) 836-2731 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Name, Address and Telephone Number,
Including Area Code, of Agent for Service)</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Indicate by check mark whether the registrant
is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company or an emerging growth company.
See the definitions of &ldquo;large accelerated filer,&rdquo; &ldquo;accelerated filer,&rdquo; &ldquo;smaller reporting company,&rdquo;
and &ldquo;emerging growth company&rdquo; in Rule 12b-2 of the Exchange Act.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(Check one):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Courier; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">Large accelerated filer &nbsp;&nbsp;</FONT><FONT STYLE="font-family: Wingdings"><U>&uuml;</U></FONT>
<FONT STYLE="font-family: Times New Roman, Times, Serif">&#9;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 4pt 0 0pt; text-indent: 1in"><FONT STYLE="font-family: Times New Roman, Times, Serif">Accelerated
filer <FONT STYLE="font-family: Wingdings">&#168;</FONT></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Non-accelerated filer <FONT STYLE="font-family: Wingdings">&#168;</FONT>
&nbsp;&nbsp;(Do not check if a smaller reporting company)&#9;&#9;&#9;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 4pt 0 0pt; text-indent: 1in">Smaller reporting company <FONT STYLE="font-family: Wingdings">&#168;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 1in">Emerging growth company <FONT STYLE="font-family: Wingdings">&#168;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">If an emerging growth company, indicate by check mark if the
registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards
provided pursuant to Section 7(a)(2)(B) of the Securities Act. <FONT STYLE="font-family: Wingdings">&#168;</FONT></P>



<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0">&nbsp;</P>

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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXPLANATORY NOTE </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">On December 31, 2017 (the &ldquo;Effective Date&rdquo;), Arconic Inc.,
a Pennsylvania corporation (&ldquo;Arconic Pennsylvania&rdquo; or, prior to the Reincorporation (as defined below),
the &ldquo;Company,&rdquo; and formerly known as Alcoa Inc.) merged with and into Arconic Inc., a Delaware
corporation (&ldquo;Arconic Delaware&rdquo; or, following the Reincorporation, the &ldquo;Company&rdquo;) in order to effect
the change of the Company&rsquo;s jurisdiction of incorporation from Pennsylvania to Delaware (the
&ldquo;Reincorporation&rdquo;). The shareholders of Arconic Pennsylvania approved the Reincorporation at a special meeting of
shareholders held on November 30, 2017. Arconic Delaware is deemed to be the successor issuer of Arconic Pennsylvania under
the Securities Exchange Act of 1934, as amended (the &ldquo;Exchange Act&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">The common stock, par value $1.00 per share, of Arconic Pennsylvania
(the &ldquo;Arconic Pennsylvania Common Stock&rdquo;) was listed for trading on the New York Stock Exchange and traded under the
symbol &ldquo;ARNC.&rdquo; As of the Effective Date, this symbol, without interruption, represents shares of common stock, par
value $1.00 per share, of Arconic Delaware (the &ldquo;Arconic Delaware Common Stock&rdquo;). There was no change in the Exchange
Act File Number assigned by the Securities and Exchange Commission (the &ldquo;Commission&rdquo;) as a result of the Reincorporation.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">This Post-Effective Amendment No. 1 incorporates by reference
the contents of the earlier Registration Statements on Form S-8 filed by Arconic Pennsylvania with the Commission on July 23, 2015
(File No.&nbsp;333-205829), and on February 26, 2016 (File No. 333-209777) (collectively, the &ldquo;Registration Statements&rdquo;),
registering 1,041,575 shares of Arconic Pennsylvania Common Stock, and an indeterminate number of plan interests, to be issued
to participants in the RTI International Metals, Inc. Employee Savings and Investment Plan, RTI Bargaining Unit Employee Savings
and Investment Plan and RTI Employee Savings &amp; Investment Plan (the &ldquo;Plans&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Effective after the close of business on December 31, 2016,
the Company terminated the Plans. Thereafter, all assets were distributed from the Plans&rsquo; accounts. The offering of Arconic
Pennsylvania Common Stock (and any related shares of Arconic Delaware Common Stock) and plan interests under the Plans has terminated.
This Post-Effective Amendment No. 1 to the Registration Statements on Form S-8 is being filed to deregister 290,764 shares of Arconic
Pennsylvania Common Stock (and any related shares of Arconic Delaware Common Stock) and plan interests that were registered under
the Registration Statements. Such shares of Arconic Pennsylvania Common Stock (and any related shares of Arconic Delaware Common
Stock) remain unissued under the Plans.</P>



<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="margin: 0"></P>

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<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt"><B>The Registrant.</B> Pursuant to
the requirements of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it
meets all of the requirements for filing on Form S-8 and has duly caused this Post-Effective Amendment to be signed on
its behalf by the undersigned, thereunto duly authorized, in the City of New York, the State of New York, on this
29<SUP>th</SUP> day of January 2018.&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" ALIGN="RIGHT" STYLE="font: 10pt Times New Roman, Times, Serif; width: 40%">
<TR>
    <TD STYLE="width: 10%; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 5%">&nbsp;</TD>
    <TD STYLE="width: 85%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="3">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">ARCONIC INC.</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">(Registrant)</P></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-size: 10pt">By</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-bottom: black 0.75pt solid">/s/&nbsp;Paul Myron&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: top">Paul Myron</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: left"><B>Vice President and Controller</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: center">&nbsp;</TD>
    <TD STYLE="font-size: 10pt; text-align: left"><B>(Principal Accounting Officer)</B></TD></TR>
</TABLE><BR STYLE="clear: both">
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">Pursuant to the requirements of the Securities
Act of 1933, this Post-Effective Amendment has been signed below by the following persons in the capacities and on the dates indicated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
<TR>
    <TD STYLE="width: 37%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="width: 45%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; width: 1%">&nbsp;</TD>
    <TD STYLE="width: 16%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD NOWRAP>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: black 0.75pt solid"><B>Signature</B></P></TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD NOWRAP>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: black 0.75pt solid"><B>Title</B></P></TD>
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD NOWRAP>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; border-bottom: black 0.75pt solid"><B>Date</B></P></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
<TR>
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font-size: 10pt">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font-size: 10pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">
<DIV STYLE="padding: 0in; border-bottom: black 0.75pt solid">

        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">/s/ Charles P. Blankenship, Jr.</P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">Chief Executive Officer; Director</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">January 29, 2018</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-align: center">Charles P. Blankenship, Jr.</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">(Principal Executive Officer)</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt"></TD></TR>
<TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">
<DIV STYLE="padding: 0in; border-bottom: black 0.75pt solid">

        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">/s/&nbsp; Ken Giacobbe&nbsp;</P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Executive Vice President and Chief Financial Officer</P></TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">January 29, 2018</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-align: center">Ken Giacobbe</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">(Principal Financial Officer)</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">
<DIV STYLE="padding: 0in; border-bottom: black 0.75pt solid">

        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">/s/ Paul Myron&nbsp;</P>
</DIV></TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">Vice President and Controller</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">January 29, 2018</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-align: center">Paul Myron</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">(Principal Accounting Officer)</TD>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">Arthur D. Collins, Jr., Rajiv L. Gupta,
Sean O. Mahoney, E. Stanley O&rsquo;Neal, John C. Plant, Julie G. Richardson, Patricia F. Russo and Ulrich R. Schmidt, each as
a Director, on January 29, 2018, by Katherine H. Ramundo, their attorney-in-fact.</P>

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    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-bottom: black 0.75pt solid">/s/ Katherine H.
Ramundo&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-left: 0.25in">Katherine H.
Ramundo</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-bottom: 0.75pt; font-size: 10pt; padding-left: 0.25in"><B>Attorney-in-fact</B></TD></TR>
</TABLE>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt"><B>The Plans.</B> Pursuant to the
requirements of the Securities Act of 1933, the trustees (or other persons who administer the Plans) have duly caused this
Post-Effective Amendment to be signed on their behalf by the undersigned, thereunto duly authorized, in the City of
New York, State of New York, on January 29, 2018.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">RTI International Metals, Inc. Employee
Savings and Investment Plan</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">RTI Bargaining Unit Employee Savings and
Investment Plan</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">RTI Employee Savings &amp; Investment Plan</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-bottom: black 0.75pt solid">/s/ Vas Nair</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Vas Nair, Member, Arconic Inc.</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>Benefits Management Committee</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; width: 10%; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="vertical-align: bottom; width: 5%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 85%">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-bottom: black 0.75pt solid">/s/&nbsp;Brian Redmond</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Brian Redmond, Member, Arconic Inc.</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>Benefits Management Committee</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">By:</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; border-bottom: black 0.75pt solid">/s/&nbsp;Scott M. Zahorchak</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Scott M. Zahorchak, Member, Arconic Inc.</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>Benefits Management Committee</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD></TR>

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