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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left">
</div>
<div align="center" style="font-size: 10pt; margin-top: 0pt"><b>
</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>1. ORGANIZATION</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO International, Inc. and its subsidiaries (collectively, “WESCO”), headquartered in
Pittsburgh, Pennsylvania, is a full-line distributor of electrical, industrial and communications
maintenance, repair and operating (“MRO”) and original equipment manufacturers (“OEM”) products,
construction materials, and advanced supply chain management and logistics services used primarily
in the industrial, construction, utility and commercial, institutional and government markets. We
serve over 100,000 customers globally, through approximately 400 full service branches and seven
distribution centers located primarily in the United States, Canada and Mexico, with additional
full service branches in the United Kingdom, Singapore, China, Australia and the United Arab
Emirates and a commercial presence in 6 other countries.
</div>
</div>
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>2. ACCOUNTING POLICIES</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     <i>Basis of Presentation</i>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The unaudited condensed consolidated financial statements of WESCO have been prepared in
accordance with Rule 10-01 of <font style="white-space: nowrap">Regulation S-X</font> of the Securities and Exchange Commission (the “SEC”).
The unaudited condensed consolidated financial statements should be read in conjunction with the
audited consolidated financial statements and notes thereto included in WESCO’s 2010 Annual Report
on Form 10-K filed with the SEC. The December 31, 2010 condensed consolidated balance sheet data
was derived from audited financial statements but does not include all disclosures required by
accounting principles generally accepted in the United States.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The unaudited condensed consolidated balance sheet as of March 31, 2011, the unaudited
condensed consolidated statements of income for the three months ended March 31, 2011 and 2010,
respectively, and the unaudited condensed consolidated statements of cash flows for the three
months ended March 31, 2011 and 2010, respectively, in the opinion of management, have been
prepared on the same basis as the audited consolidated financial statements and include all
adjustments necessary for the fair statement of the results of the interim periods. All
adjustments reflected in the unaudited condensed consolidated financial statements are of a normal
recurring nature unless indicated. Results for the interim periods presented are not necessarily
indicative of the results to be expected for the full year.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     <i>Recent Accounting Pronouncements</i>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     Pronouncements issued by the Financial Accounting Standards Board (the “FASB”) or other
authoritative accounting standards groups with future effective dates are either not applicable or
are not expected to be significant to WESCO’s financial position, results of operations or cash
flows.
</div>
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</div>
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<div style="font-family: 'Times New Roman',Times,serif">
</div>
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>3. STOCK-BASED COMPENSATION</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO’s stock-based employee compensation plans are comprised of stock options, stock-settled
stock appreciation rights and restricted stock units. Compensation cost for all stock-based awards
is measured at fair value on the date of grant, and compensation cost is recognized, net of
estimated forfeitures, over the service period for awards expected to vest. The fair value of stock
options and stock-settled appreciation rights is determined using the Black-Scholes valuation
model. The fair value of restricted stock units is determined by the grant-date closing price of
WESCO’s common stock. The forfeiture assumption is based on WESCO’s historical employee behavior
that is reviewed on an annual basis. No dividends are assumed.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     During the three month periods ended March 31, 2011 and 2010, WESCO granted the following
stock-settled stock appreciation rights and restricted stock units at the following weighted
average assumptions:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: px solid #000000"><b>Three Months Ended March 31,</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>2011</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>2010</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="7" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Stock-settled appreciations rights granted
</div></td>
<td> </td>
<td> </td>
<td align="right">379,757</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">10,750</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Restricted stock units
</div></td>
<td> </td>
<td> </td>
<td align="right">53,852</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Risk free interest rate
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">2.4</td>
<td nowrap="nowrap">%</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">2.2</td>
<td nowrap="nowrap">%</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Expected life
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td colspan="0" nowrap="nowrap" align="right">5.0 years</td>
<td nowrap="nowrap"> </td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td colspan="0" nowrap="nowrap" align="right">4.5 years</td>
<td nowrap="nowrap"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Expected volatility
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">49</td>
<td nowrap="nowrap">%</td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">50</td>
<td nowrap="nowrap">%</td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     For the three months ended March 31, 2011 and 2010, the weighted average fair value
per stock-settled appreciation right granted was $26.90 and $12.63, respectively. For the three
months ended March 31, 2011, the weighted average fair value per restricted stock unit granted was
$60.05.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO recognized $5.0 million and $3.5 million of non-cash stock-based compensation expense,
which is included in selling, general and administrative expenses, for the three months ended March
31, 2011 and 2010, respectively. As of March 31, 2011, there was $27.0 million of total
unrecognized compensation cost related to non-vested stock-based compensation arrangements for all
awards previously made, of which approximately $10.5 million is expected to be recognized over the
remainder of 2011, $10.0 million in 2012, $6.0 million in 2013 and $0.5 million in 2014.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     During the three months ended March 31, 2011 and 2010, the total intrinsic value of awards
exercised was $6.0 million and $0.9 million, respectively, and the total amount of cash received
from the exercise of options was $0.2 million and $0.4 million, respectively. The tax benefit
associated with the exercise of awards for the three months ended March 31, 2011 and 2010 totaled
$1.0 million and $0.4 million, respectively, and was recorded as an increase to additional capital.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The following table sets forth a summary of stock options and stock-settled stock appreciation
rights and related information for the three months ended March 31, 2011:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="52%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Weighted</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Weighted Average</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Aggregate</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Average</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Remaining</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Intrinsic</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Exercise</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Contractual Term</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Value</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Awards</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Price</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(In Years)</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>(In Thousands)</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Outstanding at December 31, 2010
</div></td>
<td> </td>
<td> </td>
<td align="right">4,498,303</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">36.38</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Granted
</div></td>
<td> </td>
<td> </td>
<td align="right">379,757</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">60.05</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Exercised
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(210,467</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">29.67</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Forfeited
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(55,130</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">43.23</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Outstanding at March 31, 2011
</div></td>
<td> </td>
<td> </td>
<td align="right">4,612,463</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">38.55</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">6.6</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">94,093</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Exercisable at March 31, 2011
</div></td>
<td> </td>
<td> </td>
<td align="right">2,793,784</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">39.14</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">5.2</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">56,990</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The following table sets forth a summary of restricted stock units and related information for the three months
ended March 31, 2011:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Weighted</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Average</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2"><b>Fair</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Awards</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>Value</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Unvested at December 31, 2010
</div></td>
<td> </td>
<td> </td>
<td align="right">392,493</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">28.36</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Granted
</div></td>
<td> </td>
<td> </td>
<td align="right">53,852</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">60.05</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Vested
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(577</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">27.79</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Forfeited
</div></td>
<td> </td>
<td nowrap="nowrap" align="left"> </td>
<td align="right">(4,087</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">30.90</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Unvested at March 31, 2011
</div></td>
<td> </td>
<td> </td>
<td align="right">441,681</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">32.21</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
</div>
<!--DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" -->
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>4. EARNINGS PER SHARE</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     Basic earnings per share are computed by dividing net income by the weighted average common
shares outstanding during the periods. Diluted earnings per share are computed by dividing net
income by the weighted average common shares and common share equivalents outstanding during the
periods. The dilutive effect of common share equivalents is considered in the diluted earnings per
share computation using the treasury stock method, which includes consideration of stock-based
compensation and convertible debt.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The following table sets forth the details of basic and diluted earnings per share:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><b>Three Months Ended</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: px solid #000000"><b>March 31,</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td><i>Amounts in thousands, except share and per share data</i></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2011</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net income
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">37,305</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">19,200</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Weighted average common shares outstanding used in computing basic earnings per share
</div></td>
<td> </td>
<td> </td>
<td align="right">43,060,351</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">42,443,117</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Common shares issuable upon exercise of dilutive stock options
</div></td>
<td> </td>
<td> </td>
<td align="right">1,417,346</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">522,876</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Common shares issuable from contingently convertible debentures (see note below for basis of calculation)
</div></td>
<td> </td>
<td> </td>
<td align="right">5,955,068</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">687,990</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Weighted average common shares outstanding and common share equivalents used in computing diluted
earnings per share
</div></td>
<td> </td>
<td> </td>
<td align="right">50,432,765</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">43,653,983</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Earnings per share:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Basic
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">0.87</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.45</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Diluted
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">0.74</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">0.44</td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     For the three months ended March 31, 2011 and 2010, the computation of diluted
earnings per share excluded 1.2 million and 3.2 million, respectively, of stock-settled stock
appreciation rights at weighted average exercise prices of $62.84 per share and $41.62 per share,
respectively. These amounts were excluded because their effect would have been antidilutive.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     Because of WESCO’s obligation to settle the par value of the 1.75% Convertible Senior
Debentures due 2026 (the “2026 Debentures”) and the 6.0% Convertible Senior Debentures due 2029
(the “2029 Debentures” and together with the 2026 Debentures, the “Debentures”) in cash, WESCO is
not required to include any shares underlying the Debentures in its diluted weighted average
shares outstanding until the average stock price per share for the period exceeds the conversion
price of the respective Debentures. At such time, only the number of shares that would be issuable
(under the treasury stock method of accounting for share dilution) would be included, which is
based upon the amount by which the average stock price exceeds the conversion price. The
conversion prices of the 2029 Debentures and 2026 Debentures are $28.87 and $88.15, respectively.
Share dilution is limited to a maximum of 11,951,939 shares for the 2029 Debentures and 2,507
shares for the 2026 Debentures. For the period ended March 31, 2011 and 2010, the effect of the
Debentures on diluted earnings per share was a decrease of $0.10 and less than $0.01,
respectively.
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
</div>
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>5. EMPLOYEE BENEFIT PLANS</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     A majority of WESCO’s employees are covered by defined contribution retirement savings plans
for their services rendered subsequent to WESCO’s formation. WESCO also offers a deferred
compensation plan for select individuals. For U.S. participants, WESCO will make contributions in
an amount equal to 50% of the participant’s total monthly contributions up to a maximum of 6% of
eligible compensation. For Canadian participants, WESCO will make contributions in an amount
ranging from 1% to 7% of the participant’s eligible compensation based on years of continuous
service. In addition, employer contributions may be made at the discretion of the Board of
Directors. For the three months ended March 31, 2011 and 2010, WESCO incurred charges of $7.8
million and $6.3 million, respectively, for all such plans. Contributions are made in cash to all
employee retirement savings plan accounts, except for the deferred compensation plan. Employees
then have the option to transfer balances allocated to their accounts into any of the available
investment options, including WESCO common stock.
</div>
</div>
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>6. COMMITMENTS AND CONTINGENCIES</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO is a co-defendant in a lawsuit filed in a state court in Indiana in which a customer
alleges that WESCO sold defective products manufactured or remanufactured by others and is seeking
monetary damages in the amount of approximately $50 million, as the original amount sought of
approximately $52 million was modified to approximately $47 million in written responses to
discovery requests. The discovery process is on-going in this matter. WESCO has denied any
liability, believes that it has meritorious defenses and intends to vigorously defend itself
against these allegations. Accordingly, no liability is recorded for this matter as of March 31,
2011.
</div>
</div>
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<!-- Begin Block Tagged Note 7 - us-gaap:ComprehensiveIncomeNoteTextBlock-->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>7. COMPREHENSIVE INCOME</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The following tables set forth comprehensive income and its components:
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="76%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
<td width="5%"> </td>
<td width="1%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6"><b>Three Months Ended</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="6" style="border-bottom: 0px solid #000000"><b>March 31,</b></td>
<td> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td nowrap="nowrap" align="left" style="border-bottom: 0px solid #000000"><i>Amounts in thousands</i></td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2011</b></td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="2" style="border-bottom: 1px solid #000000"><b>2010</b></td>
<td> </td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net income
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">37,305</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">19,200</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Foreign currency translation adjustment
</div></td>
<td> </td>
<td> </td>
<td align="right">7,986</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">7,404</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 1px solid #000000"> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Comprehensive income
</div></td>
<td> </td>
<td align="left">$</td>
<td align="right">45,291</td>
<td> </td>
<td> </td>
<td align="left">$</td>
<td align="right">26,604</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" colspan="2" align="right" style="border-top: 3px double #000000"> </td>
<td> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
</div>
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>8. INCOME TAXES</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The effective income tax rate for the three months ended March 31, 2011 and 2010 was 28.4% and
29.5%, respectively. WESCO’s effective tax rate is lower than the federal statutory rate of 35%
primarily due to benefits resulting from the recapitalization of Canadian operations, which are
partially offset by nondeductible expenses, state taxes and foreign rate differences. The
effective tax rate for the three months ended March 31, 2011 reflects discrete benefits totaling
$1.4 million related to state taxes and an adjustment for uncertain tax positions, partially offset
by a discrete adjustment of $0.4 million related to an increase in state tax rates. The effective
tax rate for the three months ended March 31, 2010 included discrete adjustments of $0.5 million
related to foreign taxes partially offset by favorable tax positions.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     The total amount of unrecognized tax benefits were $2.4 million and $3.4 million as of March
31, 2011 and December 31, 2010, respectively. If these tax benefits were recognized in the
consolidated financial statements, the portion of these amounts that would reduce WESCO’s effective
tax rate would be $0.8 million and $1.9 million, respectively. During the next twelve months, it
is reasonably possible that the amount of unrecognized tax benefits will change by $2.7 million due
to the resolution of federal, state and foreign tax examinations.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO records interest related to uncertain tax positions as a part of interest expense in the
consolidated statement of income. As of March 31, 2011 and December 31, 2010, WESCO had an accrued
liability for interest related to uncertain tax positions of $9.6 million and $9.5 million,
respectively. Penalties are recognized as part of income tax expense. There were no penalties
recorded during the three months ended March 31, 2011 or 2010.
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
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<div style="font-family: 'Times New Roman',Times,serif">
</div>
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<div style="font-family: 'Times New Roman',Times,serif">
<div align="left" style="font-size: 10pt; margin-top: 12pt"><b>9. OTHER FINANCIAL INFORMATION</b>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     WESCO Distribution, Inc. (“WESCO Distribution”) a 100% owned subsidiary of WESCO
International, Inc. (“WESCO International”) has outstanding $150.0 million in aggregate principal
amount of 7.50% Senior Subordinated Notes due 2017 (the “2017 Notes”), and WESCO International has
outstanding $0.2 million in aggregate principal amount of 2026 Debentures and $345.0 million in
aggregate principal amount of 2029 Debentures. The 2017 Notes are fully and unconditionally
guaranteed by WESCO International on a subordinated basis to all existing and future senior
indebtedness of WESCO International. The 2026 Debentures and 2029 Debentures are fully and
unconditionally guaranteed by WESCO Distribution on a senior subordinated basis to all existing and
future senior indebtedness of WESCO Distribution.
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt">     Condensed consolidating financial information for WESCO International, WESCO Distribution and
the non-guarantor subsidiaries is as follows:
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt"> 
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="center" style="font-size: 10pt; margin-top: 0pt">
<b>
</b>
</div>
<div align="center" style="font-size: 10pt; margin-top: 0pt">
<b>CONDENSED CONSOLIDATING BALANCE SHEETS</b><br />
(unaudited)
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="40%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 1px solid #000000"><b>March 31, 2011</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 0px solid #000000"><b>(In thousands)</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">and</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">International,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Distribution,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Non-Guarantor</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Eliminating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Subsidiaries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Entries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidated</td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash and cash equivalents
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">24,746</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">27,686</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">52,432</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Trade accounts receivable, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">885,361</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">885,361</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Inventories, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">341,785</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">289,299</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">631,084</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Other current assets
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(34,881</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">7,996</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">91,743</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">64,858</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Total current assets
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(34,881</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">374,527</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,294,089</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,633,735</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Intercompany receivables, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,845,419</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1,845,419</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Property, buildings and equipment, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">42,328</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">77,695</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">120,023</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Intangible assets, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">7,608</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">149,278</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">156,886</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Goodwill and other intangibles, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">246,268</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">745,570</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">991,838</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Investments in affiliates and other noncurrent assets
</div></td>
<td> </td>
<td> </td>
<td align="right">2,053,472</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,285,585</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">40,854</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(5,329,878</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">50,033</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Total assets
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">2,018,591</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">3,956,316</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">4,152,905</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(7,175,297</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">2,952,515</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Accounts payable
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">415,115</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">235,268</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">650,383</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other current liabilities
</div></td>
<td> </td>
<td> </td>
<td align="right">7,103</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(53,555</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">202,824</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">156,372</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Total current liabilities
</div></td>
<td> </td>
<td> </td>
<td align="right">7,103</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">361,560</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">438,092</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">806,755</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Intercompany payables, net
</div></td>
<td> </td>
<td> </td>
<td align="right">616,949</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,228,470</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1,845,419</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Long-term debt
</div></td>
<td> </td>
<td> </td>
<td align="right">167,178</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">154,034</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">382,127</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">703,339</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other noncurrent liabilities
</div></td>
<td> </td>
<td> </td>
<td align="right">28,137</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">163,891</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">51,169</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">243,197</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Stockholders’ equity
</div></td>
<td> </td>
<td> </td>
<td align="right">1,199,224</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,048,361</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,281,517</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(5,329,878</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">1,199,224</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Total liabilities and stockholders’ equity
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">2,018,591</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">3,956,316</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">4,152,905</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(7,175,297</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">2,952,515</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="40%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 1px solid #000000"><b>December 31, 2010</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 0px solid #000000"><b>(In thousands)</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">and</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">International,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Distribution,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Non-Guarantor</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Eliminating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Subsidiaries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Entries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidated</td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash and cash equivalents
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">1</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">32,341</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">21,235</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">53,577</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Trade accounts receivable, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">792,681</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">792,681</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Inventories, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">321,111</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">267,737</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">588,848</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Other current assets
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(4,492</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">90,105</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(7,033</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">78,580</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Total current assets
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(4,491</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">443,557</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,074,620</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,513,686</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Intercompany receivables, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,933,768</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1,933,768</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Property, buildings and equipment, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">41,115</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">76,930</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">118,045</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Intangible assets, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">7,817</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">152,490</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">160,307</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Goodwill and other intangibles, net
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">240,313</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">745,401</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">985,714</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Investments in affiliates and other noncurrent assets
</div></td>
<td> </td>
<td> </td>
<td align="right">2,002,358</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,237,808</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">39,527</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(5,230,671</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">49,022</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Total assets
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">1,997,867</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">3,970,610</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">4,022,736</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(7,164,439</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">2,826,774</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Accounts payable
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">349,250</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">188,255</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">537,505</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other current liabilities
</div></td>
<td> </td>
<td> </td>
<td align="right">8,016</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">17,562</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">145,150</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">170,728</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Total current liabilities
</div></td>
<td> </td>
<td> </td>
<td align="right">8,016</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">366,812</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">333,405</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">708,233</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Intercompany payables, net
</div></td>
<td> </td>
<td> </td>
<td align="right">646,607</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,287,161</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1,933,768</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Long-term debt
</div></td>
<td> </td>
<td> </td>
<td align="right">166,573</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">151,755</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">407,565</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">725,893</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other noncurrent liabilities
</div></td>
<td> </td>
<td> </td>
<td align="right">28,077</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">167,705</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">48,272</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">244,054</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Stockholders’ equity
</div></td>
<td> </td>
<td> </td>
<td align="right">1,148,594</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,997,177</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,233,494</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(5,230,671</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">1,148,594</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Total liabilities and stockholders’ equity
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">1,997,867</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">3,970,610</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">4,022,736</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(7,164,439</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">2,826,774</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt"> 
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="center" style="font-size: 10pt; margin-top: 0pt">
<b>
</b>
</div>
<div align="center" style="font-size: 10pt; margin-top: 0pt">
<b>CONDENSED CONSOLIDATING STATEMENTS OF INCOME</b><br />
(unaudited)
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="40%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 1px solid #000000"><b>Three Months Ended March 31, 2011</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 0px solid #000000"><b>(In thousands)</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">and</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">International,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Distribution,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Non-Guarantor</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Eliminating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Subsidiaries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Entries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidated</td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net Sales
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">739,274</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">710,564</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(18,533</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">1,431,305</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Cost of goods sold
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">591,846</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">571,942</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(18,533</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">1,145,255</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Selling, general and administrative expenses
</div></td>
<td> </td>
<td> </td>
<td align="right">38</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">136,540</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">77,181</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">213,759</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Depreciation and amortization
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,675</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">4,871</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">7,546</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Results of affiliates’ operations
</div></td>
<td> </td>
<td> </td>
<td align="right">43,197</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">48,023</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(91,220</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Interest expense, net
</div></td>
<td> </td>
<td> </td>
<td align="right">5,854</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,708</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,079</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">12,641</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Provision for income taxes
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">9,331</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">5,468</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">14,799</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Net income
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">37,305</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">43,197</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">48,023</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(91,220</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">37,305</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<tr valign="bottom">
<td width="40%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 1px solid #000000"><b>Three Months Ended March 31, 2010</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 0px solid #000000"><b>(In thousands)</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">and</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">International,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Distribution,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Non-Guarantor</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Eliminating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Subsidiaries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Entries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidated</td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net Sales
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">658,946</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">503,370</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(13,717</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">1,148,599</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Cost of goods sold
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">527,693</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">407,207</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(13,717</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">921,183</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Selling, general and administrative expenses
</div></td>
<td> </td>
<td> </td>
<td align="right">88</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">129,258</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">53,693</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">183,039</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Depreciation and amortization
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,496</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,605</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">6,101</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Results of affiliates’ operations
</div></td>
<td> </td>
<td> </td>
<td align="right">26,556</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">34,828</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(61,384</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Interest expense, net
</div></td>
<td> </td>
<td> </td>
<td align="right">7,268</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,745</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,517</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">13,530</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Other income
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(2,506</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(2,506</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Provision for income taxes
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">5,532</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">2,520</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">8,052</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom"><!-- Blank Space -->
<td>
<div style="margin-left:15px; text-indent:-15px"> 
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Net income
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">19,200</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">26,556</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">34,828</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(61,384</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">19,200</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="left" style="font-size: 10pt; margin-top: 6pt"> 
</div>
<!-- Folio -->
<!-- /Folio -->
</div>
<!-- PAGEBREAK -->
<div style="font-family: 'Times New Roman',Times,serif">
<div align="center" style="font-size: 10pt; margin-top: 0pt">
<b>
</b>
</div>
<div align="center" style="font-size: 10pt; margin-top: 0pt">
<b>CONDENSED CONSOLIDATING STATEMENTS OF CASH FLOWS</b><br />
(unaudited)
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="40%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 1px solid #000000"><b>Three Months Ended March 31, 2011</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 0px solid #000000"><b>(In thousands)</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">International,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Distribution,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Non-Guarantor</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">and Eliminating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Subsidiaries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Entries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidated</td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net cash provided (used) by operating activities
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">29,668</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(3,518</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">5,631</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">31,781</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Investing activities:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Capital expenditures
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(4,974</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(585</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(5,559</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Acquisition payments
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(7,798</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(7,798</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Other
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">42</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">42</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Net cash used by investing activities
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(12,730</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(585</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(13,315</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Financing activities
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Net repayments
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(29,658</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">7,187</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(22,471</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Equity transactions
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(11</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(11</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Other
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,465</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,465</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Net cash (used) provided by
financing activities
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(29,669</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">8,652</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(21,017</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" nowrap="nowrap" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Effect of exchange rate changes on cash and cash
equivalents
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,406</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,406</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net change in cash and cash equivalents
</div></td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(7,596</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">6,452</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(1,145</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash and cash equivalents at the beginning of year
</div></td>
<td> </td>
<td> </td>
<td align="right">1</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">32,342</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">21,234</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">53,577</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash and cash equivalents at the end of period
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">24,746</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">27,686</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">52,432</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
<div align="center">
<table style="font-size: 10pt; text-align: left" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<tr valign="bottom">
<td width="40%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
<td width="5%"> </td>
<td width="3%"> </td>
<td width="1%"> </td>
<td width="3%"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 1px solid #000000"><b>Three Months Ended March 31, 2010</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="19" style="border-bottom: 0px solid #000000"><b>(In thousands)</b></td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">WESCO</td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">International,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Distribution,</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Non-Guarantor</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">and Eliminating</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3"> </td>
</tr>
<tr style="font-size: 8pt" valign="bottom">
<td> </td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Inc.</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Subsidiaries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Entries</td>
<td> </td>
<td nowrap="nowrap" align="center" colspan="3">Consolidated</td>
</tr>
<!-- End Table Head -->
<!-- Begin Table Body -->
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Net cash (used) provided by operating activities
</div></td>
<td> </td>
<td nowrap="nowrap" align="right">$</td>
<td align="right">(7,940</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td align="right">$</td>
<td align="right">70,421</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">6,193</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">68,674</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Investing activities:
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Capital expenditures
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(2,096</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(150</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(2,246</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Acquisition payments
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(48</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(48</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Proceeds from sale of subsidiary
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,365</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">1,365</td>
<td> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Other
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">15</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">15</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Net cash used by investing activities
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(764</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(150</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(914</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Financing activities
</div></td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Net repayments
</div></td>
<td> </td>
<td> </td>
<td align="right">7,138</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(64,577</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(57,439</td>
<td nowrap="nowrap">)</td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Equity transactions
</div></td>
<td> </td>
<td> </td>
<td align="right">805</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">805</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:30px; text-indent:-15px">Other
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(5,804</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(5,804</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" nowrap="nowrap" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:30px; text-indent:-15px">Net cash provided (used) by
financing activities
</div></td>
<td> </td>
<td> </td>
<td align="right">7,943</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(70,381</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(62,438</td>
<td nowrap="nowrap">)</td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" nowrap="nowrap" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Effect of exchange rate changes on cash and cash
equivalents
</div></td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,423</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">3,423</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Net change in cash and cash equivalents
</div></td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
<td> </td>
<td nowrap="nowrap" align="right"> </td>
<td align="right">(724</td>
<td nowrap="nowrap">)</td>
<td> </td>
<td> </td>
<td align="right">9,466</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">8,745</td>
<td> </td>
</tr>
<tr valign="bottom" style="background: #cceeff">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash and cash equivalents at the beginning of year
</div></td>
<td> </td>
<td> </td>
<td align="right">3</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">16,924</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">95,402</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td> </td>
<td align="right">112,329</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 1px solid #000000"> </td>
</tr>
<tr valign="bottom">
<td>
<div style="margin-left:15px; text-indent:-15px">Cash and cash equivalents at the end of period
</div></td>
<td> </td>
<td align="right">$</td>
<td align="right">6</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">16,200</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">104,868</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">—</td>
<td> </td>
<td> </td>
<td align="right">$</td>
<td align="right">121,074</td>
<td> </td>
</tr>
<tr style="font-size: 1px">
<td> </td>
<td> </td>
<td colspan="19" align="left" style="border-top: 3px double #000000"> </td>
</tr>
<!-- End Table Body -->
</table>
</div>
</div>
false
--12-31
Q1
2011
2011-03-31
10-Q
0000929008
43093964
Yes
Large Accelerated Filer
1379800000
WESCO INTERNATIONAL INC
No
Yes
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