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<SEC-DOCUMENT>0001309014-07-000169.txt : 20070316
<SEC-HEADER>0001309014-07-000169.hdr.sgml : 20070316
<ACCEPTANCE-DATETIME>20070316074538
ACCESSION NUMBER:		0001309014-07-000169
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20070316
FILED AS OF DATE:		20070316
DATE AS OF CHANGE:		20070316

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			UNITED MICROELECTRONICS CORP
		CENTRAL INDEX KEY:			0001033767
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15128
		FILM NUMBER:		07697994

	BUSINESS ADDRESS:	
		STREET 1:		993 HIGHLAND CIRCLE
		CITY:			LOS ALTOS
		STATE:			CA
		ZIP:			94024
		BUSINESS PHONE:		0118863577

	MAIL ADDRESS:	
		STREET 1:		993 HIGHLAND CIRCLE
		CITY:			LOS ALTOS
		STATE:			CA
		ZIP:			94024
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>htm_2087.htm
<DESCRIPTION>LIVE FILING
<TEXT>
<!-- HTML Header Page -->
<HTML>
<HEAD>
<TITLE>
United Microelectronics Corporation&nbsp;-&nbsp;Form&nbsp;6-K
</TITLE>
</HEAD>
<!-- End HTML Header Page --><!-- Cover Page Header -->
<BODY bgcolor=white text=black>
<HR NOSHADE>
<A NAME="DOCUMENT_TOP">&nbsp;</A>
<P align="center">
<FONT size="+1"><B>
UNITED STATES<BR>
SECURITIES AND EXCHANGE COMMISSION<BR>
Washington, D.C. 20549</B>
</P>

<P>
<CENTER>
<FONT SIZE="+2" FACE="Arial"><B>Form 6-K</B></FONT><BR>

</CENTER>
</P>

<P>
<CENTER>
<FONT size="+1">
REPORT OF FOREIGN PRIVATE ISSUER<BR>PURSUANT TO RULE 13a-16 OR 15d-16<BR>UNDER THE SECURITIES EXCHANGE ACT OF 1934
</FONT>
</CENTER>
</P>
<P>
<CENTER>
For the month of March, 2007
</CENTER>
</P>
<P>
<CENTER>
Commission File Number: 001-15128
</CENTER>
</P>
<!-- End Cover Page Header -->
<!-- Cover Page Registrant -->
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	<FONT SIZE="+2"><B>United Microelectronics Corporation</B></FONT><BR>
	<FONT SIZE="-7">&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;</FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="CENTER" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	<FONT SIZE="-1">(Translation of registrant&#146;s name into English)</FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	&nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
      <FONT FACE="Courier" SIZE="+0">No. 3 Li Hsin Road II<br>Science Park<br>Hsinchu, Taiwan, R.O.C.<br></FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
        <FONT SIZE="-7">&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;&#151;</FONT><BR>
	    <FONT SIZE="-1">(Address of principal executive office)</FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="CENTER" WIDTH="100%" COLSPAN="5">
	&nbsp;
    </TD>
  </TR>
</TABLE>
<!-- End Cover Page Registrant -->
<!-- Checkboxes Page -->
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%" COLSPAN="5">
	Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F:&nbsp;&nbsp;[<FONT FACE="Courier">x</FONT>]&nbsp;Form 20-F&nbsp;&nbsp;&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]&nbsp;Form 40-F
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        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):&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        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):&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:&nbsp;&nbsp;[<FONT FACE="Courier">&nbsp;</FONT>]&nbsp;Yes&nbsp;&nbsp;&nbsp;&nbsp;[<FONT FACE="Courier">x</FONT>]&nbsp;No
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" COLSPAN="5" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>
</TABLE>

<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
        If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):&nbsp;&nbsp;&nbsp;<FONT FACE="Courier"><U>&nbsp;n/a&nbsp;</U></FONT>
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
        &nbsp;
    </TD>
  </TR>
</TABLE>
<!-- End Checkboxes Page -->
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<HR NOSHADE>
<DIV ALIGN="LEFT" STYLE="PAGE-BREAK-BEFORE:ALWAYS">
<!-- End HR Page Break --><!-- Report Page -->
<FONT SIZE="3">
<PRE>


</PRE>
</FONT>
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<HR NOSHADE>
<DIV ALIGN="LEFT" STYLE="PAGE-BREAK-BEFORE:ALWAYS">
 <!-- Page Break  -->
<DIV ALIGN="LEFT" STYLE="PAGE-BREAK-BEFORE:ALWAYS">
<!-- End Page Break -->
<!-- Signatures Page Header -->
<FONT SIZE="+1">
<CENTER>
<B>SIGNATURES</B>
</CENTER>
</FONT>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
       &nbsp;
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
       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.
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="100%">
       &nbsp;
    </TD>
  </TR>
</TABLE>
<!-- End Signatures Page Header -->
<!-- Signatures Page Details -->
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="100%">
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       United Microelectronics Corporation
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       &nbsp;
    </TD>
  </TR>

  <TR>
    <TD VALIGN="TOP" ALIGN="LEFT" WIDTH="40%">
       Date: 3/16/2007
    </TD>
    <TD VALIGN="TOP" ALIGN="LEFT" WIDTH="4%%">
       By:
    </TD>
    <TD VALIGN="TOP" ALIGN="LEFT" WIDTH="56%">
       Chitung Liu<BR><HR WIDTH="30%" NOSHADE>
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       Name:&nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       Chitung Liu
    </TD>
  </TR>

  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       Title:
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       Chief Financial Officer
    </TD>
  </TR>
  <TR>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="40%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="4%%">
       &nbsp;
    </TD>
    <TD VALIGN="BOTTOM" ALIGN="LEFT" WIDTH="56%">
       &nbsp;
    </TD>
  </TR>
</TABLE>
<!-- End Signatures Page Details -->
<!-- HR Page Break  -->
<HR NOSHADE>
<DIV ALIGN="LEFT" STYLE="PAGE-BREAK-BEFORE:ALWAYS">
<!-- End HR Page Break --><!-- Exhibit Index Header Page -->
<CENTER>
<FONT SIZE="+1"><B>
EXHIBIT&nbsp;INDEX
</B></FONT>
</CENTER>
<BR>
<CENTER>
<TABLE CELLSPACING="0" BORDER="0" CELLPADDING="0" WIDTH="60%">
  <TR VALIGN="BOTTOM">
    <TD NOWRAP ALIGN="LEFT" WIDTH="8%">
      <FONT SIZE="-1"><B>Exhibit No.</B></FONT>
    </TD>
    <TD WIDTH="15%">
      &nbsp;
    </TD>
    <TD NOWRAP ALIGN="LEFT" WIDTH="77%">
      <FONT SIZE="-1"><B>Description</B></FONT>
    </TD>
  </TR>
  <TR VALIGN="BOTTOM">
    <TD NOWRAP ALIGN="CENTER" WIDTH="8%">
      <HR SIZE="1" NOSHADE>
    </TD>
    <TD WIDTH="15%">
      &nbsp;
    </TD>
    <TD NOWRAP ALIGN="CENTER" WIDTH="77%">
      <HR ALIGN="LEFT" SIZE="1" WIDTH="88%" NOSHADE>
    </TD>
  </TR>
<!-- Exhibit Index Header Page -->
<!-- Exhibit Index Item -->
  <TR VALIGN="BOTTOM">
    <TD VALIGN="TOP" WIDTH="8%" nowrap>
      <FONT SIZE="-1">99<FONT>
    </TD>
    <TD WIDTH="15%">
       &nbsp;
    </TD>
    <TD ALIGN="LEFT" VALIGN="TOP" WIDTH="77%">
      <FONT SIZE="2">For the month of March, 2007</FONT>
    </TD>
  </TR>
<!-- End Exhibit Index Item -->
<!-- ExhibitIndexFooter -->
  <TR VALIGN="BOTTOM">
    <TD VALIGN="TOP" WIDTH="8%" nowrap>
      &nbsp;
    </TD>
    <TD WIDTH="15%">
       &nbsp;
    </TD>
    <TD ALIGN="LEFT" VALIGN="TOP" WIDTH="77%">
      &nbsp;
    </TD>
  </TR>
</TABLE>
<!-- End ExhibitIndexFooter -->
<!-- HR Page Break  -->
<HR NOSHADE>
<DIV ALIGN="LEFT" STYLE="PAGE-BREAK-BEFORE:ALWAYS">
<!-- End HR Page Break --><!-- HTML Footer Page -->
</BODY>
</HTML>
<!-- End HTML Footer Page -->
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99
<SEQUENCE>2
<FILENAME>exhibit1.htm
<DESCRIPTION>EX-99
<TEXT>
<!-- ExhibitContentHeader Page -->
<HTML>
<HEAD>
<TITLE>
Exhibit&nbsp;&nbsp;EX-99
</TITLE>
</HEAD>
<!-- End HTML Header Page -->
<!-- ExhibitContentPage -->

<BODY style="font-family: 'Times New Roman',Times,serif">


<P align="center" style="font-size: 10pt"><FONT style="font-size: 12pt"><B>Exhibit</B></FONT>



<P align="left" style="font-size: 12pt"><U>Exhibit</U> <U>Description</U>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.1</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on February&nbsp;26, 2007:&nbsp;To announce related materials on disposal of Silconware
Precision Industries Co., Ltd. securities</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.2</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on February&nbsp;27, 2007:&nbsp;To clarify reports on Apple Daily News on February&nbsp;27,
2007</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.3</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;6, 2007:&nbsp;UMC will attend investor conferences on 2007/03/07</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.4</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;8, 2007:&nbsp;February Revenue</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.5</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;15, 2007: 1) the trading and pledge of UMC common shares by directors,
supervisors, executive officers and 10% shareholders of UMC; 2) the acquisition and
disposition of assets by UMC</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.6</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;15, 2007: Board Meeting&#146;s Resolution on Retained Earning Distribution</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.7</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;15, 2007: Board&#146;s Resolution to Convene Annual General Meeting (AGM)</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.8</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;15, 2007: Important Resolutions from 10th term 6th Board Meeting</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.9</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;15, 2007: To announce related materials on investment of mainland
Chinese company Unimicron Technology (Suzhou) Corp.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.10</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;15, 2007: To announce related materials on investment of mainland
Chinese company Unimicron Technology (Kunshan) Corp.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">99.11</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Announcement on March&nbsp;15, 2007: UMC Expands Global Customer Service Network with India
Office</TD>
</TR>



</TABLE>

<P align="center" style="font-size: 10pt; display: none">1
<!-- PAGEBREAK -->


<P><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 12pt">



</TABLE>


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.1</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>To announce related materials on disposal of Silconware Precision Industries Co., Ltd.
securities</B></TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>1.Name of the securities: Common shares of Silconware Precision Industries Co., Ltd.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>2.Trading date: 2006/11/14~2007/02/26</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>3.Trading volume, unit price, and total monetary amount of the transaction: trading volume:
7,060,000 shares; average unit price: $ 49.06 NTD; total amount: $ 346,332,600 NTD</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>4.Gain (or loss) (not applicable in case of acquisition of securities): $ 67,055,603 NTD</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>5.Relationship with the underlying company of the trade: Silconware Precision Industries Co., Ltd.,
none.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>6.Current cumulative volume, amount, and shareholding percentage of holdings of the security being
traded (including the current trade) and status of any restriction of rights (e.g. pledges):
cumulative volume: 4,484,579 shares; amount: 177,399,397 NTD; percentage of holdings: 0.16 %;
status of restriction of rights: no</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>7.Current ratio of long or short term securities investment (including the current trade) to the
total assets and shareholder&#146;s equity as shown in the most recent financial statement and the
operational capital as shown in the most recent financial statement: ratio of total assets:
13.92%; ratio of shareholder&#146;s equity: 17.36%; the operational capital as shown in the most
recent financial statement: $ 86,701,109 thousand NTD</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>8.Concrete purpose/objective of the acquisition or disposal: financing operation</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>9.Do the directors have any objections to the present transaction? no</TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">10.Any other matters that need to be specified: none


<P align="center" style="font-size: 10pt; display: none">2
<!-- PAGEBREAK -->

<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.2</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>To clarify reports on Apple Daily News on February&nbsp;27, 2007</B></TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">1.Name of the reporting media: Apple Daily News, B1
<BR>
2.Date of the report: 2007/02/27
<BR>
3.Content of the report: UMC obtains 65 nm orders from Cypress Semiconductor Corporation
<BR>
4.Summary of the information provided by investors: None
<BR>
5.Company&#146;s explanation of the reportage or provided information:


<P align="left" style="font-size: 12pt; text-indent: 1%">The Company&#146;s policy is to respect customers&#146; business confidentiality and can not commend on
specific customer&#146;s status. The Company can not commend on media&#146;s speculative reports as well.


<P align="left" style="font-size: 12pt">6.Countermeasures: None
<BR>
7.Any other matters that need to be specified: None


<P align="center" style="font-size: 10pt; display: none">3
<!-- PAGEBREAK -->

<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.3</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>UMC will attend investor conferences on 2007/03/07</B></TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>1.Date of the investor/press conference: 2007/03/07</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>2.Location of the investor/press conference: San Francisco, USA</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>3.Financial and business related information:</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" style="background: transparent">&nbsp;</TD>
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The Company will attend the Technology Conference 2007 held by Morgan Stanley on 2007/03/07
in San Francisco, USA.</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>4.Any other matters that need to be specified:</TD>
</TR>

</TABLE>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" style="background: transparent">&nbsp;</TD>
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Please refer to MOPS or Company website for more information.</TD>
</TR>


</TABLE>

<P align="center" style="font-size: 10pt; display: none">4
<!-- PAGEBREAK -->


<P><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 12pt">



</TABLE>


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.4</B>



<P align="center" style="font-size: 12pt"><B>United Microelectronics Corporation</B><BR>
March&nbsp;8, 2007



<P align="left" style="font-size: 12pt">This is to report the changes or status of 1) Sales volume 2) Funds lent to other parties 3)
Endorsements and guarantees 4) Financial derivative transactions for the period of February&nbsp;2007.


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Sales volume (NT$ Thousand)</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="13%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="9%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="8%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="4%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><I>Period</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>Items</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>2007</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>2006</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000">Changes</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><B>%</B></TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3">-</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px">February</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left">Invoice amount<BR></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">5,871,402</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">6,850,605</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(979,203</TD>
    <TD nowrap>)</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(14.29</TD>
    <TD nowrap>)</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>2007</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" nowrap align="left"><I>Invoice amount<BR></I></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">13,089,245</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">14,368,479</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(1,279,234</TD>
    <TD nowrap>)</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(8.90</TD>
    <TD nowrap>)</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px">February</DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" nowrap align="left"><I>Net sales<BR></I></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">7,239,384</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">7,521,040</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(281,656</TD>
    <TD nowrap>)</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(3.74</TD>
    <TD nowrap>)</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>2007</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" nowrap align="left"><I>Net sales<BR></I></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15,475,993</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">15,928,461</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(452,468</TD>
    <TD nowrap>)</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(2.84</TD>
    <TD nowrap>)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Funds lent to other parties (NT$ Thousand)</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="50%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Balance as of period end</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>This Month</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>Last Month</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>Limit of lending</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 10pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT style="font-size: 12pt">UMC</FONT></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">38,262,385</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT style="font-size: 12pt">UMC&#146;s subsidiaries</FONT></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">108,458</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Endorsements and guarantees (NT$ Thousand)</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="76%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>Change in This Month</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>Balance as of period end</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><B>Limit of endorsements</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 10pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT style="font-size: 12pt"><I>UMC</I></FONT></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT style="font-size: 10pt"><I>UMC&#146;s
subsidiaries</I></FONT></DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD colspan="5" align="left"><FONT style="font-size: 12pt"><I>UMC endorses for subsidiaries</I></FONT><BR></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD colspan="5" align="left"><FONT style="font-size: 10pt"><I>UMC&#146;s subsidiaries endorse for UMC</I></FONT><BR></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right"><I><FONT style="font-size: 10pt"></I><FONT style="font-size: 12pt">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD colspan="5" align="left"><FONT style="font-size: 10pt"><I>UMC endorses for PRC companies</I></FONT><BR></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right"><I><FONT style="font-size: 10pt"></I><FONT style="font-size: 12pt">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD colspan="5" align="left"><FONT style="font-size: 12pt"><I>UMC&#146;s subsidiaries endorse for PRC companies</I></FONT><BR></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">0</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Financial derivatives transactions</TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">a Hedging purpose : NT$ thousand

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="84%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Financial instruments</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000">Forwards</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000">Interests SWAP</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Deposit Paid</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Royalty Income (Paid)</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Unwritten-off Trading Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Net Profit from Fair Value</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Written-off Trading Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Realized profit (loss)</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="left" style="font-size: 12pt">b Trading purpose :</FONT><FONT style="font-size: 10pt"> </FONT><FONT style="font-size: 12pt">NT$ thousand
</FONT>
<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="74%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="10%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Financial instruments</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000">Credit-linked Deposits</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Deposit Paid</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Unwritten-off Trading Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">18,522,444</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Net Profit from Market Value</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right">&nbsp;</TD>
    <TD align="right">(994,092</TD>
    <TD nowrap>)</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Written-off Trading Contracts</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><I>Realized profit (loss)</I></DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt; display: none">5
<!-- PAGEBREAK -->


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.5</B>



<P align="center" style="font-size: 12pt"><B>United Microelectronics Corporation</B><BR>
For the month of February, 2007



<P align="left" style="font-size: 12pt">This is to report 1) the trading of directors, supervisors, executive officers and 10% shareholders
of United Microelectronics Corporation (&#147;UMC&#148;) (NYSE: UMC); 2) the pledge and clear of pledge of
UMC common shares by directors, supervisors, executive officers and 10% shareholders of UMC; 3) the
acquisition assets by UMC; 4) the disposition of assets by UMC for the month of February, 2007.


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The trading of directors, supervisors, executive officers and 10% shareholders</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="28%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="7%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000">Title</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>Name</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><I>Number of shares</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><I>Number of shares</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>Changes</I></TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><I>held as of</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3"><I>held as of</I></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>January 31, 2006</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>February 28, 2007</I></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 10pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px"><FONT style="font-size: 12pt">Vice President</FONT></DIV></TD>
    <TD>&nbsp;</TD>
    <TD colspan="3" align="left"><FONT style="font-size: 12pt">Fu-Tai Liou<BR></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">5,513,944</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">5,483,944</FONT></TD>
    <TD><FONT style="font-size: 12pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="right"><FONT style="font-size: 12pt"></FONT></TD>
    <TD align="right"><FONT style="font-size: 12pt">(30,000</FONT></TD>
    <TD nowrap><FONT style="font-size: 12pt">)</FONT></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The pledge and clear of pledge of UMC common shares by directors, supervisors, executive
officers and 10% shareholders:</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="8%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="14%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="23%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="22%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="13%">&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><I>Title</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>Name</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>Number of shares</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>Number of shares</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>Changes</I></TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>pledge as of</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center"><I>pledge as of</I></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR style="font-size: 10pt" valign="bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>January 31, 2007</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" style="border-bottom: 1px solid #000000"><I>February 28, 2007</I></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 10pt">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px"><FONT style="font-size: 12pt">&#151;</FONT>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt">&#151;</FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt">&#151;</FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt">&#151;</FONT>
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top"><FONT style="font-size: 12pt">&#151;</FONT></TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The acquisition assets (NT$ Thousand)</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="66%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="6%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><I>Description of assets</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>February</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>2007</I></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px">Semiconductor Manufacturing Equipment</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">2,495,675</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">7,635,860</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px">Fixed assets</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">316,032</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">461,367</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The disposition of assets (NT$ Thousand)</TD>
</TR>

</TABLE>

<DIV align="center">
<TABLE style="font-size: 12pt" cellspacing="0" border="0" cellpadding="0" width="95%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="78%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="3%">&nbsp;</TD>
</TR>
<TR style="font-size: 12pt" valign="bottom">
    <TD nowrap align="left" style="border-bottom: 1px solid #000000"><I>Description of assets</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>February</I></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="3" style="border-bottom: 1px solid #000000"><I>2007</I></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px">Semiconductor Manufacturing Equipment</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,660</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">1,882</TD>
    <TD>&nbsp;</TD>
</TR>
<TR valign="bottom" style="font-size: 12pt">
    <TD><DIV style="margin-left:10px; text-indent:-10px">Fixed assets</DIV></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="right">0</TD>
    <TD>&nbsp;</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<P align="center" style="font-size: 10pt; display: none">6
<!-- PAGEBREAK -->


<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.6</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Board Meeting&#146;s Resolution on Retained Earning Distribution</B></TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">1.Date of the board of directors resolution:2007/03/15
<BR>
2.Type and monetary amount of dividend distribution:


<P align="left" style="font-size: 12pt; text-indent: 1%">Cash dividends of NT$12,461,529,283(approximately NT$0.70 per share)


<P align="left" style="font-size: 12pt">3.Any other matters that need to be specified:


<P align="left" style="font-size: 12pt; text-indent: 1%">Propose to distribute employee cash bonus NT$2,324,119,405; bonus to directors &#038; supervisors
is NT$15,494,130.


<P align="center" style="font-size: 10pt; display: none; text-indent: 1%">7
<!-- PAGEBREAK -->

<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.7</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>Board&#146;s Resolution to Convene Annual General Meeting (AGM)</B></TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">1.Date of the board of directors resolution:2007/03/15
<BR>
2.Date for convening the shareholders&#146; meeting:2007/06/11
<BR>
3.Location for convening the shareholders&#146; meeting: UMC Recreation Center in Hsinchu Science Park
<BR>
4.Cause or subjects for convening the meeting:


<P align="left" style="font-size: 12pt; text-indent: 1%">1) Reporting items


<P align="left" style="font-size: 12pt; text-indent: 2%">1.2006 business report


<P align="left" style="font-size: 12pt; text-indent: 2%">2.Supervisor&#146;s report of 2006 audited financial report


<P align="left" style="font-size: 12pt; text-indent: 2%">3.Acquisition or disposal of assets with related parties in 2006


<P align="left" style="font-size: 12pt; text-indent: 2%">4.Treasury shares buyback program


<P align="left" style="font-size: 12pt; text-indent: 2%">5.Amendment of the Company&#146;s Employee Stock Option Plan


<P align="left" style="font-size: 12pt; text-indent: 2%">6.The Company&#146;s &#147;Rules for the Conduct of Board Meeting&#148;


<P align="left" style="font-size: 12pt; text-indent: 1%">2) Approving items


<P align="left" style="font-size: 12pt; text-indent: 2%">1.To accept the Company&#146;s 2006 business report and financial statement


<P align="left" style="font-size: 12pt; text-indent: 2%">2.To approve the Company&#146;s 2006 retained earnings distribution


<P align="left" style="font-size: 12pt; text-indent: 1%">3) Discussion items


<P align="left" style="font-size: 12pt; text-indent: 2%">1.To approve the Company&#146;s proposal for capital reduction


<P align="left" style="font-size: 12pt; text-indent: 2%">2.To amend the Company&#146;s &#147;Acquisition or Disposal of Assets Procedure&#148;


<P align="left" style="font-size: 12pt; text-indent: 2%">3.To amend the Company&#146;s Articles of Incorporation


<P align="left" style="font-size: 12pt; text-indent: 2%">4.To amend the Company&#146;s &#147;Directors and Supervisors Election Procedure&#148;


<P align="left" style="font-size: 12pt; text-indent: 2%">5.To approve the investment in Mainland China


<P align="left" style="font-size: 12pt">5.Book closure starting and ending dates: 2007/04/13~2007/06/11
<BR>
6.Any other matters that need to be specified: None


<P align="center" style="font-size: 10pt; display: none">8
<!-- PAGEBREAK -->

<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.8</B>



<P align="left" style="font-size: 12pt"><B>Important Resolutions from 10th term 6th Board Meeting</B>


<P align="left" style="font-size: 12pt">1.Date of occurrence of the event: 2007/03/15
<BR>
2.Company name: United Microelectronics Corp.
<BR>
3.Relationship to the Company (please enter &#147;head office&#148; or &#147;affiliate company&#148;):Head office
<BR>
4.Reciprocal shareholding ratios: N/A
<BR>
5.Cause of occurrence:


<P align="left" style="font-size: 12pt; text-indent: 1%">The major resolutions from the 10th term 6th Board Meeting:


<P align="left" style="font-size: 12pt; text-indent: 1%">United Microelectronics Corporation (TAIEX: 2303, NYSE: UMC), at a meeting of the Board of
Directors and Supervisors held today, approved the 2006 Business Report and Financial Statements,
submitted proposals to be resolved at the Annual General Meeting, and set the agenda for the Annual
General Meeting. A brief summary of the proposals is as follows:


<P align="left" style="font-size: 12pt; text-indent: 1%">&#149;&nbsp;Cash dividend of NT$12,461,529,283, estimated NT$0.7 per share


<P align="left" style="font-size: 12pt; text-indent: 1%">&#149;&nbsp;Employee cash bonus of NT$2,324,119,405, 7.1% of net income after tax


<P align="left" style="font-size: 12pt; text-indent: 1%">&#149;&nbsp;Proposal for the Company&#146;s capital reduction


<P align="left" style="font-size: 12pt; text-indent: 1%">&#149;&nbsp;Amendment of the Company&#146;s Articles of Incorporation, &#147;Acquisition or Disposal of Assets
Procedure&#148;, and &#147;Directors and Supervisors Election Procedure&#148;.


<P align="left" style="font-size: 12pt; text-indent: 1%">1.2006 Business Report and Financial Statements


<P align="left" style="font-size: 12pt; text-indent: 1%">UMC&#146;s Board of Directors approved the 2006 Business Report and Financial Statements. The
Company&#146;s revenue for 2006 was NT$104,099&nbsp;million and net income after tax was NT$32,619&nbsp;million,
with EPS of NT$1.80. The distributable earnings for 2006 were NT$15,494&nbsp;million. Under ROC GAAP,
the cancellation of 1&nbsp;billion shares that the Company bought back in the first half of 2006
resulted in an NT$6,371&nbsp;million adjustment. Another NT$9,198&nbsp;million of retained earnings was
debited due to the transaction from the disposal of shares of Hsun Chieh Investments Co., Ltd.,
resulting in the book values of treasury stock and unrealized loss on long-term investments
exceeding the total long-term investment fair value.


<P align="left" style="font-size: 12pt; text-indent: 1%">2.Proposed Dividend Distribution and Employee Bonus


<P align="left" style="font-size: 12pt; text-indent: 1%">UMC&#146;s Board of Directors will propose to issue a cash dividend of NT$0.7 per share and
distribute an employee cash bonus of NT$2,324&nbsp;million, which is 7% of the net income after tax. To
comply with future regulation changes for employee bonus issuance, UMC&#146;s Board of Directors has
carefully evaluated, while taking into consideration industry trends, the percentage of employee
bonus to distributable retained earnings. The figure will increase from the current 8% to 15% and
will mostly be in the form of cash, supplemented with compensation programs such as employee stock
options and share buyback programs for employees. The Company&#146;s competitive compensation program
with help attract and retain the industry&#146;s most talented employees. As a whole, the 2006 earnings
payout ratio will be 95%.


<P align="left" style="font-size: 12pt; text-indent: 1%">3.Capital Reduction


<P align="left" style="font-size: 12pt; text-indent: 1%">On January&nbsp;23, 2007, UMC&#146;s Board of Directors proposed a capital reduction of NT$57,394
million with the cancellation of 5,739&nbsp;million of its outstanding shares. Shareholders will receive
approximately NT$3 for each of their shares held. Related procedures and timetable will be further
announced after the approval from 2007 Annual General Meeting and then the Financial Supervisory
Commission.


<P align="left" style="font-size: 12pt; text-indent: 1%">4.Investment of mainland China through overseas holding companies.


<P align="left" style="font-size: 12pt; text-indent: 1%">5.2007 Annual General Meeting


<P align="left" style="font-size: 12pt; text-indent: 1%">The 2007 Annual General Meeting will be held at 9:00 AM, on Monday, June&nbsp;11, 2007 at the UMC
Recreation Center in Hsinchu Science Park.


<P align="left" style="font-size: 12pt">6.Countermeasures: none


<P align="left" style="font-size: 12pt">7.Any other matters that need to be specified: none


<P align="center" style="font-size: 10pt; display: none">9
<!-- PAGEBREAK -->

<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.9</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>To announce related materials on investment of mainland Chinese company Unimicron Technology
(Suzhou) Corp.</B></TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">1.Date of occurrence of the event: 2007/03/15
<BR>
2.Method of the present increase (decrease)&nbsp;in investment: Invest mainland Chinese company
Unimicron Technology (Suzhou) Corp. through Smart Idea Holdings Limited
<BR>
3.Transaction volume, price per unit, and total monetary amount of the transaction: New share
issuance; No more than USD$20,000,000
<BR>
4.Company name of the invested mainland Chinese company: Unimicron Technology (Suzhou) Corp.
<BR>
5.Paid-in capital of said invested mainland Chinese company: USD$9,000,000
<BR>
6.Amount of new capital increment currently planned by said invested mainland Chinese company:
USD$20,000,000
<BR>
7.Main business items of said invested mainland Chinese company: PCB Manufacturing
<BR>
8.Type of CPA opinion issued for the financial statement of said invested mainland Chinese company
for the most recent fiscal year: Not applicable
<BR>
9.Net worth of said invested mainland Chinese company on the financial statement for the most
recent fiscal year: USD$9,316,323
<BR>
10.Amount of profit/loss of said invested mainland Chinese company on the financial statement for
the most recent fiscal year: USD$0
<BR>
11.Amount of actual investment to date in said invested mainland Chinese company: USD$0
<BR>
12.Counterparty to the transaction and its relationship to the Company: USD$0
<BR>
13.Where the counter party to the transaction is an actual related party, public announcement shall
also be made of the reason for choosing the related party as the counter party and the identity of
the previous owner (including its relationship with the company and the trading counterpart), the
date of transfer, and the price: Not applicable
<BR>
14.Where a person who owned the subject matter of the transaction within the past five years has
been an actual related party of the company, public announcement shall also be made of the dates
and prices of acquisition and disposal by the related party and such party&#146;s relationship to the
company at those times: Not applicable
<BR>
15.Gain (or loss) on disposal: Not applicable
<BR>
16.Terms of delivery or payment (including payment period and monetary amount), restrictive
covenants in the contract, and other important stipulations: Installment payments; None
<BR>
17.The manner of deciding on this transaction, the reference basis for the decision on price and
the decision-making department: The decision making manner: New share issuance; The decision-making
department: Board of directors
<BR>
18.Broker: None
<BR>
19.Concrete purpose of the acquisition or disposal: Long-term investment
<BR>
20.Do the directors have any objection to the present transaction?: None
<BR>
21.Total amount of mainland China area investment (including the present investment) approved by
the Investment Commission to date: USD$0
<BR>
22.Ratio of the total amount of investment (including the present investment) in the mainland China
area approved by the Investment Commission to date to the paid-in capital on the financial
statement for the most recent period: 0%
<BR>
23.Ratio of the total amount of investment (including the present investment) in the mainland China
area approved by the Investment Commission to date to the total assets on the financial statement
for the most recent period: 0%
<BR>
24.Ratio of the total amount of investment (including the present investment) in the mainland China
area approved by the Investment Commission to date to the shareholders&#146; equity on the financial
statement for the most recent period: 0%
<BR>
25.Total amount of actual investment in the mainland China area to date: USD$0
<BR>
26.Ratio of the total amount of actual investment in the mainland China area to date to the paid-in
capital on the financial statement for the most recent period: 0%
<BR>
27.Ratio of the total amount of actual investment in the mainland China area to date to the total
assets on the financial statement for the most recent period: 0%
<BR>
28.Ratio of the total amount of actual investment in the mainland China area to date to the
shareholders&#146; equity on the financial statement for the most recent period: 0%
<BR>
29.Amount of recognized profits and losses on investment in the mainland China area for the most
recent three fiscal years: USD$0
<BR>
30.Amount of profit remitted back to Taiwan for the most recent three fiscal years: USD$0
<BR>
31.Has the CPA issued an opinion on the unreasonableness of the price of the current transaction?:
None
<BR>
32.Any other matters that need to be specified: None


<P align="center" style="font-size: 10pt; display: none">10
<!-- PAGEBREAK -->

<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.10</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>To announce related materials on investment of mainland Chinese company Unimicron Technology
(Kunshan) Corp.</B></TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">1.Date of occurrence of the event: 2007/03/15
<BR>
2.Method of the present increase (decrease)&nbsp;in investment: Invest mainland Chinese company
Unimicron Technology (Kunshan) Corp. through Smart Idea Holdings Limited
<BR>
3.Transaction volume, price per unit, and total monetary amount of the transaction: Net worth per
share; No more than USD$30,000,000
<BR>
4.Company name of the invested mainland Chinese company: Unimicron Technology (Kunshan) Corp.
<BR>
5.Paid-in capital of said invested mainland Chinese company: USD$70,200,000
<BR>
6.Amount of new capital increment currently planned by said invested mainland Chinese company:
USD$0
<BR>
7.Main business items of said invested mainland Chinese company: PCB Manufacturing
<BR>
8.Type of CPA opinion issued for the financial statement of said invested mainland Chinese company
for the most recent fiscal year: Qualified Opinion
<BR>
9.Net worth of said invested mainland Chinese company on the financial statement for the most
recent fiscal year: USD$71,160,866
<BR>
10.Amount of profit/loss of said invested mainland Chinese company on the financial statement for
the most recent fiscal year: USD$5,762,249
<BR>
11.Amount of actual investment to date in said invested mainland Chinese company: USD$0
<BR>
12.Counterparty to the transaction and its relationship to the Company: USD$0
<BR>
13.Where the counter party to the transaction is an actual related party, public announcement shall
also be made of the reason for choosing the related party as the counter party and the identity of
the previous owner (including its relationship with the company and the trading counterpart), the
date of transfer, and the price: Not applicable
<BR>
14.Where a person who owned the subject matter of the transaction within the past five years has
been an actual related party of the company, public announcement shall also be made of the dates
and prices of acquisition and disposal by the related party and such party&#146;s relationship to the
company at those times: Not applicable
<BR>
15.Gain (or loss) on disposal: Not applicable
<BR>
16.Terms of delivery or payment (including payment period and monetary amount), restrictive
covenants in the contract, and other important stipulations: Installment payments; None
<BR>
17.The manner of deciding on this transaction, the reference basis for the decision on price and
the decision-making department: The decision making manner: New share issuance; The decision-making
department: Board of directors
<BR>
18.Broker: None
<BR>
19.Concrete purpose of the acquisition or disposal: Long-term investment
<BR>
20.Do the directors have any objection to the present transaction?: None
<BR>
21.Total amount of mainland China area investment (including the present investment) approved by
the Investment Commission to date: USD$0
<BR>
22.Ratio of the total amount of investment (including the present investment) in the mainland China
area approved by the Investment Commission to date to the paid-in capital on the financial
statement for the most recent period: 0%
<BR>
23.Ratio of the total amount of investment (including the present investment) in the mainland China
area approved by the Investment Commission to date to the total assets on the financial statement
for the most recent period: 0%
<BR>
24.Ratio of the total amount of investment (including the present investment) in the mainland China
area approved by the Investment Commission to date to the shareholders&#146; equity on the financial
statement for the most recent period: 0%
<BR>
25.Total amount of actual investment in the mainland China area to date: USD$0
<BR>
26.Ratio of the total amount of actual investment in the mainland China area to date to the paid-in
capital on the financial statement for the most recent period: 0%
<BR>
27.Ratio of the total amount of actual investment in the mainland China area to date to the total
assets on the financial statement for the most recent period: 0%
<BR>
28.Ratio of the total amount of actual investment in the mainland China area to date to the
shareholders&#146; equity on the financial statement for the most recent period: 0%
<BR>
29.Amount of recognized profits and losses on investment in the mainland China area for the most
recent three fiscal years: USD$0
<BR>
30.Amount of profit remitted back to Taiwan for the most recent three fiscal years: USD$0
<BR>
31.Has the CPA issued an opinion on the unreasonableness of the price of the current transaction?:
None
<BR>
32.Any other matters that need to be specified: None


<P align="center" style="font-size: 10pt; display: none">11
<!-- PAGEBREAK -->

<P align="right" style="font-size: 12pt"><B>Exhibit&nbsp;99.11</B>



<P>
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 12pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="right">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD><B>UMC Expands Global Customer Service Network with India Office</B></TD>
</TR>

</TABLE>


<P align="left" style="font-size: 12pt">1.Date of occurrence of the event: 2007/03/15
<BR>
2.Company name: United Microelectronics Corp.
<BR>
3.Relationship to the Company (please enter &#147;head office&#148; or &#147;affiliate company&#148;):Head office
<BR>
4.Reciprocal shareholding ratios: N/A
<BR>
5.Cause of occurrence:


<P align="left" style="font-size: 12pt; text-indent: 1%">UMC (NYSE: UMC; TSE: 2303), a leading global semiconductor foundry, today announced plans to
open a customer support office in India&#146;s Hyderabad Technology Park. The new office will provide
design support services for India-based customers as well as for UMC customers who operate design
centers in the area. The proximity of UMC&#146;s new office to its customers in India will create
working synergies that will help accelerate the design-in of their products into UMC&#146;s process
technologies to shorten time-to-manufacturing.


<P align="left" style="font-size: 12pt">Yeshwant Mehta, Vice President of Engineering, UMC India Design Support Center, said, &#147;Over the
last ten years, international IDMs and fables design companies have established many design centers
in India. Due to the cooperative nature of the foundry business, it is important for us to be close
to our customers in order to provide immediate support during the important design-in phase. UMC&#146;s
new office will offer our many customers operating in India easy access to our comprehensive design
support resources to help streamline their SoC design process. India also represents a strategic
geographic location for a new office due to its potential for becoming the next major market for
the consumption of IC products.&#148;
<BR>
India provides a rich-talent pool of highly-skilled engineers and solid infrastructure to support
high-technology companies operating in the country. The India office enhances UMC&#146;s global customer
design support network, which also includes offices in Japan, Taiwan, and Sunnyvale, California.
The India office, expected to open in Q2 2007, will employ locally-hired engineers.
<BR>
6.Countermeasures: none
<BR>
7.Any other matters that need to be specified: none



<P align="center" style="font-size: 10pt; display: none">12


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