<SEC-DOCUMENT>0001279569-17-001203.txt : 20170605
<SEC-HEADER>0001279569-17-001203.hdr.sgml : 20170605
<ACCEPTANCE-DATETIME>20170605101317
ACCESSION NUMBER:		0001279569-17-001203
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20170531
FILED AS OF DATE:		20170605
DATE AS OF CHANGE:		20170605

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRANSALTA CORP
		CENTRAL INDEX KEY:			0001144800
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15214
		FILM NUMBER:		17890131

	BUSINESS ADDRESS:	
		STREET 1:		110 12TH AVE SW BOX 1900 STATION M
		STREET 2:		CALGARY ALBERTA T2P 2MI
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2P2M1
		BUSINESS PHONE:		403-267-4724

	MAIL ADDRESS:	
		STREET 1:		110-12TH AVENUE SW
		CITY:			CALGARY ALBERTA CANADA
		STATE:			A0
		ZIP:			T2P2M1
</SEC-HEADER>
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<TYPE>6-K
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<FILENAME>transalta6k.htm
<DESCRIPTION>FORM 6-K
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<P STYLE="font: bold 14pt Times New Roman, Times, Serif; margin: 0 0 24pt; text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT><FONT STYLE="font-size: 14pt">UNITED
STATES</FONT><BR>
<FONT STYLE="font-size: 14pt">SECURITIES AND EXCHANGE COMMISSION</FONT><BR>
<FONT STYLE="font-size: 12pt">Washington, D.C. 20549</FONT></P>

<P STYLE="font: 14pt Times New Roman, Times, Serif; margin: 0 0 24pt; text-align: center"><FONT STYLE="font-size: 18pt"><B>FORM
6-K</B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 24pt; text-align: center"><FONT STYLE="font-size: 12pt"><B>REPORT
OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934</B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 24pt"><FONT STYLE="font-size: 10pt">For the month of
May 2017</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 24pt"><B>TRANSALTA
CORPORATION</B></FONT></P>

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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 24pt"><B></B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt">(Translation
of registrant&rsquo;s name into English)</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt"><B>110-12<SUP>th
</SUP>Avenue S.W., Box 1900, Station &ldquo;M&rdquo;, Calgary, Alberta, T2P 2M1</B></FONT></P>

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<P STYLE="font: 11pt Times New Roman, Times, Serif; margin: 0; text-align: center"><FONT STYLE="font-size: 10pt"><B></B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center"><FONT STYLE="font-size: 10pt">(Address
of principal executive offices)</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center"><FONT STYLE="font-size: 10pt">&nbsp;&nbsp;</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt"><FONT STYLE="font-size: 10pt">I<FONT STYLE="font-family: Times New Roman, Times, Serif">ndicate
by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.</FONT></FONT></P>

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<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 50%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Form 20-F &#9744;</FONT></TD>
    <TD STYLE="width: 50%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Form 40-F &#9746;</FONT></TD></TR>
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt"></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Indicate
by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1): ____</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Indicate
by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7): ____</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt"></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt"></P>

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    <DIV STYLE="page-break-before: always; margin-top: 6pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin-top: 0; text-align: center; margin-bottom: 0"><FONT STYLE="font-size: 10pt"><B>I</B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin-top: 0; text-align: center; margin-bottom: 0">&nbsp;</P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin-top: 0; text-align: left; margin-bottom: 0"></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-size: 10pt">The document listed below as Exhibit
99.1 to this Form 6-K is a copy of the Registrant&rsquo;s news release dated May 31, 2017 announcing &ldquo;TransAlta Corporation
Provides Notice of Series C Preferred Shares Conversion Right and Announces Reset Dividend Rates&rdquo;.</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0; text-align: justify"><FONT STYLE="font-size: 10pt">This news release
is being furnished, not filed, and will not be incorporated by reference into any registration statement filed by TransAlta Corporation
under the Securities Act of 1933, as amended.</FONT></P>



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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin-top: 0; text-align: left; margin-bottom: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 15%; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; font: 10pt Times New Roman, Times, Serif; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">99.1</FONT></TD>
    <TD STYLE="width: 85%; padding-right: 5.4pt; padding-left: 5.4pt; font: 10pt Times New Roman, Times, Serif; text-align: justify"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&ldquo;TransAlta Corporation Provides Notice of Series C Preferred Shares Conversion Right and Announces Reset Dividend
Rates&rdquo;</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0 0 12pt 40.5pt; text-indent: 0in"></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>


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<P STYLE="font: 14pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-align: center"><FONT STYLE="font-size: 10pt"><B>Signatures</B></FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 24pt"><FONT STYLE="font-size: 10pt">Pursuant to the requirements
of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned,
thereunto duly authorized.</FONT></P>

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<TR STYLE="vertical-align: top; text-align: left">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD COLSPAN="2"><FONT STYLE="font-size: 10pt"><B>TransAlta Corporation</B></FONT></TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD STYLE="width: 52%"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 5%"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="width: 43%"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-size: 10pt">By:</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt"><I>/s/ Donald Tremblay</I></FONT></TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD></TD>
    <TD><FONT STYLE="font-size: 10pt">Donald Tremblay</FONT></TD></TR>
<TR STYLE="vertical-align: top; text-align: left">
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD><FONT STYLE="font-size: 10pt">Chief Financial Officer</FONT></TD></TR>
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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 24pt"></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 9.9pt 0 0"><FONT STYLE="font-size: 10pt">Date: May 31,
2017</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0.25in 12pt 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0.25in 12pt 0"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></P>

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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0 12pt; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>EXHIBIT
INDEX</B></FONT></P>

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    <td style="width: 15%; padding-right: 5.4pt; padding-bottom: 12pt; padding-left: 5.4pt; font: 12pt Times New Roman, Times, Serif; text-indent: 0in"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">99.1</FONT></td>
    <td style="width: 85%; padding-right: 5.4pt; padding-left: 5.4pt; font: 12pt Times New Roman, Times, Serif; text-align: justify"><P STYLE="margin: 0"><FONT STYLE="font-size: 10pt">Press
                                         release dated May 31, 2017 announcing &ldquo;<FONT STYLE="font-family: Times New Roman, Times, Serif">TransAlta
                                         Corporation Provides Notice of Series C Preferred Shares Conversion Right and Announces
                                         Reset Dividend Rates&rdquo;</FONT></FONT></P>


<FONT STYLE="background-color: Yellow"></FONT>


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<P STYLE="font: 12pt Times New Roman, Times, Serif; margin: 0 0.25in 12pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">&nbsp;</FONT></P>



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<TYPE>EX-99.1
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<FILENAME>ex991.htm
<DESCRIPTION>NEWS RELEASE DATED MAY 31, 2017
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<P STYLE="margin: 0; text-align: right"><FONT STYLE="font-family: Arial, Helvetica, Sans-Serif; font-size: 8pt"><B>Exhibit 99.1</B></FONT></P>

<P STYLE="margin: 0; text-align: right">&nbsp;</P>

<P STYLE="margin: 0; text-align: right"></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0"></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0pt 0 12pt"></P>

<P STYLE="font: 12pt Arial, Helvetica, Sans-Serif; margin: 0pt 0 12pt"><B>TransAlta Corporation Provides Notice of Series C Preferred
Shares Conversion Right and Announces Reset Dividend Rates</B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">CALGARY, May 31, 2017 /CNW/ - TransAlta Corporation (&quot;TransAlta&quot;
or the &quot;Company&quot;) (TSX: TA; NYSE: TAC) announced today that it does not intend to exercise its right to redeem all or
any part of the currently outstanding Cumulative Redeemable Rate Reset First Preferred Shares, Series C (&quot;Series C Shares&quot;)
(TSX: TA.PR.F) on June 30, 2017 (the &quot;Conversion Date&quot;).</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">As a result and subject to certain conditions set out in the
prospectus supplement dated November 23, 2011 relating to the issuance of the Series C Shares, the holders of the Series C Shares
will have the right to elect to convert all or any of their Series C Shares into Cumulative Redeemable First Preferred Shares,
Series D of the Company (&quot;Series D Shares&quot;) on the basis of one Series D Share for each Series C Share on the Conversion
Date.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">With respect to any Series C Shares that remain outstanding
after June 30, 2017, holders thereof will be entitled to receive quarterly fixed cumulative preferential cash dividends, if, as
and when declared by the Board of Directors of TransAlta.&nbsp; The annual dividend rate for the Series C Shares for the five-year
period from and including June 30, 2017 to but excluding June 30, 2022, will be 4.027%, being equal to the five-year Government
of Canada&nbsp;bond yield of 0.927% determined as of today plus 3.10%, in accordance with the terms of the Series C Shares.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">With respect to any Series D Shares that may be issued on&nbsp;June
30, 2017, holders thereof will be entitled to receive quarterly floating rate cumulative preferential cash dividends,&nbsp;if,
as and when declared by the Board of Directors of TransAlta. The annual dividend rate for the 3-month floating rate period from
and including&nbsp;June 30, 2017&nbsp;to but excluding September 30, 2017 will be 3.629%, being equal to the annual rate for the
most recent auction of 90-day Government of Canada Treasury Bills of 0.529% plus 3.10%, in accordance with the terms of the Series
D Shares (the &quot;Floating Quarterly Dividend Rate&quot;). &nbsp;The Floating Quarterly Dividend Rate will be reset every quarter.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">As provided in the share conditions of the Series C Shares:
(i) if TransAlta determines that there would remain outstanding on June 30, 2017, less than 1,000,000 Series C Shares, all remaining
Series C Shares shall be converted automatically into Series D Shares on a one-for one basis effective June 30, 2017; or (ii) if
TransAlta determines that there would remain outstanding after June 30, 2017, less than 1,000,000 Series D Shares, Series C Shares
shall not be entitled to convert their shares into Series D Shares effective June 30, 2017.&nbsp; There are currently 11,000,000
Series C Shares outstanding.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">The Series C Shares are issued in &quot;book entry only&quot;
form and must be purchased or transferred through a participant in the CDS depository service (&quot;CDS Participant&quot;). All
rights of holders of Series C Shares must be exercised through CDS or the CDS Participant through which the Series C Shares are
held. The deadline for the registered shareholder to provide notice of exercise of the right to convert Series C Shares into Series
D Shares is 3:00 p.m. (MST) / 5:00 p.m. (EST) on June 15, 2017. &nbsp;Any notices received after this deadline will not be valid.
As such, holders of Series C Shares who wish to exercise their right to convert their shares should contact their broker or other
intermediary for more information and it is recommended that this be done well in advance of the deadline in order to provide the
broker or other intermediary with time to complete the necessary steps.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">If TransAlta does not receive an election notice from a holder
of Series C Shares during the time fixed therefor, then the Series C Shares shall be deemed not to have been converted (except
in the case of an automatic conversion). Holders of the Series C Shares and the Series D Shares will have the opportunity to convert
their shares again on June 30, 2022, and every five years thereafter as long as the shares remain outstanding.</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">The Toronto Stock Exchange (TSX) has conditionally approved
the listing of the Series D Shares effective upon conversion.&nbsp; Listing of the Series D Shares is subject to TransAlta fulfilling
all the listing requirements of the TSX.&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0"><B><I>About TransAlta Corporation</I></B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0"><I>TransAlta is a power generation and wholesale marketing
company focused on creating long-term shareholder value. TransAlta maintains a low-to-moderate risk profile by operating a highly
contracted portfolio of assets in Canada, the United States and Australia. TransAlta's focus is to efficiently operate wind, hydro,
solar, natural gas and coal facilities in order to provide customers with a reliable, low-cost source of power. For over 100 years,
TransAlta has been a responsible operator and a proud contributor to the communities in which it works and lives. TransAlta has
been recognized on CDP's Canadian Climate Disclosure Leadership Index (CDLI), which includes Canada's top 20 leading companies
reporting on climate change, and has been selected by Corporate Knights as one of Canada's Top 50 Best Corporate Citizens and is
recognized globally for its leadership on sustainability and corporate responsibility standards by FTSE4Good. </I></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0"><I>For more information about TransAlta, visit our web site
at transalta.com, or follow us on Twitter @TransAlta.</I></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0"><B><I>Forward Looking Information </I></B></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0"><I>This news release contains certain information that is
forward-looking and is subject to important risks and uncertainties (such statements are usually accompanied by words such as &quot;may&quot;,
&quot;will&quot;, &quot;should&quot;, &quot;estimate&quot;, &quot;intend&quot; or other similar words). Specifically, this news
release contains forward-looking information with respect to the Company, the Series C Shares and the Series D Shares, including
but not limited to future conversions, redemptions and dividends.&nbsp; All forward-looking information reflect the Company's beliefs
and assumptions based on information available at the time the statements were made and as such are not guarantees of future performance.
Readers are cautioned not to place undue reliance on this forward-looking information, which is given as of the date it is expressed
in this press release. TransAlta undertakes no obligation to update or revise any forward-looking information except as required
by law. For additional information on the assumptions made, and the risks and uncertainties which could cause actual results to
differ from those in the forward-looking information, refer to the Company's Annual Report and Management's Discussion and Analysis
filed under the Company's profile on SEDAR at www.sedar.com &nbsp;and with the U.S. Securities and Exchange Commission at www.sec.gov.</I></P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">SOURCE TransAlta Corporation</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">View original content: http://www.newswire.ca/en/releases/archive/May2017/31/c2342.html</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">%CIK: 0001144800</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0"><B>For further information:</B> Investor Inquiries: Jaeson Jaman,
Manager, Investor Relations, Phone: 1-800-387-3598 in Canada and U.S., Email: investor_relations@transalta.com; Media Inquiries:
Stacey Hatcher, Manager, Communications, Phone: Toll-free media number: 1-855-255-9184, Email: ta_media_relations@transalta.com</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">CO: TransAlta Corporation</P>

<P STYLE="font: 10pt Arial, Helvetica, Sans-Serif; margin: 9.75pt 0">CNW 12:25e 31-MAY-17</P>



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