Wesco International, Inc. 11-K
Table of Contents

 
 
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 11-K
(Mark One)
     
þ   ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
for the fiscal year ended December 29, 2006 or
     
o   TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 [NO FEE REQUIRED]
for the transition period from                      to                     
COMMISSION FILE NUMBER 1-14989
A.   Full title of the plan and address of the plan, if different from that of the issuer named below:
WESCO DISTRIBUTION, INC. RETIREMENT SAVINGS PLAN
B.   Name of issuer of the securities held pursuant to the plan and the address of its principal executive offices:
WESCO INTERNATIONAL, Inc.
225 West Station Square Drive
Suite 700
Pittsburgh, Pennsylvania 15219-1122
 
 

 


Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Financial Statements
December 29, 2006 and 2005

 


 

WESCO Distribution, Inc.
Retirement Savings Plan
Index
         
    Page(s)  
    1  
 
       
Financial Statements
       
 
       
    2  
 
       
    3  
 
       
    4-9  
 
       
Supplemental Schedule
       
 
       
    10-14  
 
       
Exhibit 23.1 Consent of Independent Registered Public Accounting Firm
       
 EX-23.1

 


Table of Contents

Report of Independent Registered Public Accounting Firm
To the Participants and Administrator of
WESCO Distribution, Inc. Retirement Savings Plan
In our opinion, the accompanying statements of net assets available for benefits and the related statements of changes in net assets available for benefits present fairly, in all material respects, the net assets available for benefits of the WESCO Distribution, Inc. Retirement Savings Plan (the “Plan”) at December 29, 2006 and 2005, and the changes in net assets available for benefits for the year ended December 29, 2006 in conformity with accounting principles generally accepted in the United States of America. These financial statements are the responsibility of the Plan’s management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.
Our audits were conducted for the purpose of forming an opinion on the basic financial statements taken as a whole. The supplemental Schedule of Assets (Held at End of Year) is presented for the purpose of additional analysis and is not a required part of the basic financial statements but is supplementary information required by the Department of Labor’s Rules and Regulations for Reporting and Disclosure under the Employee Retirement Income Security Act of 1974. This supplemental schedule is the responsibility of the Plan’s management. The supplemental schedule has been subjected to the auditing procedures applied in the audits of the basic financial statements and, in our opinion, is fairly stated in all material respects in relation to the basic financial statements taken as a whole.
Pittsburgh, Pennsylvania
June 27, 2007

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Statements of Net Assets Available for Benefits
December 29, 2006 and 2005
                 
    2006     2005  
Investments (Notes 1 and 6)
  $ 324,411,180     $ 279,738,374  
Receivables
               
Employee contributions
    852,919       25,706  
Employer matching contributions
    312,967       9,904  
Employer profit sharing discretionary contribution
    11,876,545       9,127,876  
Accrued interest
    15,950       13,645  
 
           
Net assets available for benefits
  $ 337,469,561     $ 288,915,505  
 
           
The accompanying notes are an integral part of these financial statements.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Statement of Changes in Net Assets Available for Benefits
Fiscal Year Ended December 29, 2006
         
    2006  
Additions
       
Employee contributions
  $ 19,576,426  
Employee rollovers
    1,683,285  
Employer contributions (including discretionary contribution)
    17,280,173  
Net appreciation from registered investment companies
    7,441,966  
Net appreciation from common/collective trust funds
    9,208,295  
Net appreciation from stock funds and self-directed accounts
    4,953,559  
Interest and dividend income
    11,911,043  
 
     
Total additions
    72,054,747  
 
     
 
       
Deductions
       
Distributions to withdrawing participants
    23,500,691  
 
     
Total deductions
    23,500,691  
 
     
Net increase
    48,554,056  
 
       
Net assets available for benefits
       
Beginning of year
    288,915,505  
 
     
End of year
  $ 337,469,561  
 
     
The accompanying notes are an integral part of these financial statements.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2006 and 2005
1.   Major Features of the Plan
 
    WESCO Distribution, Inc. Retirement Savings Plan (the “Plan”) was established as of February 28, 1994 (date of inception). At the date of inception, certain employees of the predecessor company became employees of WESCO Distribution, Inc. (the “Company”) and participants in the Plan. At the date of inception, all funds held by the prior plans related to the transferred employees were transferred to the Plan.
 
    The Plan covers the current employees of the Company and those former employees with a fund balance of at least $5,000 who elected to maintain their funds in the Plan. Former employees cannot make contributions to the Plan.
 
    As a result of the acquisition of Communications Supply Holdings, Inc. on November 3, 2006, approximately 800 participants were added to the Plan. These participants did not rollover their balances from that plan until plan year 2007.
 
    The Plan is subject to the Employee Retirement Income Security Act of 1974 (“ERISA”). Participants may elect to make tax deferred contributions ranging from 1% up to the lesser of 50% of their compensation or $15,000. The $15,000 limit may be adjusted in future years by the Internal Revenue Service (“IRS”). The sum of the tax deferred contributions and the after-tax contributions cannot exceed 50% of the participant’s compensation. Subject to limitation, the Company will make matching contributions in an amount equal to 50% of a participant’s total monthly contributions up to a maximum of 6% of their compensation. Participants who have attained age 50 before the close of the plan year are eligible to make catch-up contributions in addition to pre-tax contributions. A catch-up contribution is a pre-tax contribution that exceeds the annual deferral limit ($15,000 in 2006). A participant’s total catch-up contributions during 2006 and 2007 cannot exceed $5,000. The catch up contribution limits are determined by the IRS and then indexed for inflation after 2007. In addition, the Company may, at the Board of Directors’ discretion, make a discretionary contribution to the Plan provided certain predetermined profit levels are attained. The Company made discretionary contributions of $11,876,545 and $9,127,876 for the fiscal years ended December 29, 2006 and 2005, respectively.
 
    Participants are fully vested in the value of their contributions and related investment income at all times and vest in their allocated share of employer contributions according to the following schedule:
         
Less than two years of service
    0 %
Two years of service
    20 %
Three years of service
    40 %
Four years of service
    66 %
Five or more years of service
    100 %
    In conjunction with a leveraged recapitalization of the Company all active employees as of June 5, 1998 became fully vested.
 
    Employer contributions forfeited by participants not vested at their termination date are used to reinstate previously forfeited account balances of former participants who have returned to employment with the Company, or to reduce employer contributions in accordance with the plan

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2006 and 2005
    document. Total forfeitures that reduced employer contributions in 2006 were approximately $1,644,000. As of December 29, 2006, a balance of approximately $66,000 was available to reduce employer contributions in 2007.
 
    Sixteen options were available for investment of contributions to the Plan as of December 29, 2006. A brief description of the investment options is as follows:
     
Fund   Description
 
Alger Midcap Growth Institutional Fund
 
Fund seeks long term capital growth by investing primarily in equity securities of medium-capitalization companies.
 
   
AMCAP Fund
 
Fund that seeks long-term growth of capital by investing in growing, profitable companies.
 
   
American Balanced Fund
 
Investments balanced between income from bond investments and capital growth from equity investments.
 
   
Columbia Acorn Fund
 
Fund seeks long-term growth of capital by investing primarily in common stocks of small and medium sized companies with capitalization of less than $5 billion.
 
   
Columbia Core Bond Fund
 
Fund investing at least 65% of its assets in U.S. Government debt securities, investment grade bonds, and cash and cash equivalents.
 
   
MFS Value Fund
 
Value fund investing in high-quality companies with larger market capitalizations and low price-to-earnings ratios or high dividend yields.
 
   
Manningnapier Conservative Term Collective Investment Trust Fund
 
Fund invests in a conservative mix of stocks, bonds and cash securities focusing on fixed income securities with short to intermediate term maturities.
 
   
Manningnapier Extended Term Collective Investment Trust Fund
 
Fund invests in a growth-oriented mix of stocks, bonds and cash securities and long-term, fixed securities.
 
   
Manningnapier Maximum Term Collective Investment Trust Fund
 
Fund invests in an aggressive, growth-oriented mix of stocks, bonds and cash securities.
 
   
Manningnapier Moderate Term Collective Investment Trust Fund
 
Fund invests in a moderately conservative mix of stocks, bonds and cash securities that are intermediate to long-term fixed income securities and various stocks.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2006 and 2005
     
Fund   Description
 
RiverSource Trust Equity Index Fund I
 
Fund goal to achieve a rate of return as close as possible to the return of the S&P 500 Index by investing primarily in some or all of the securities of the S&P Index.
 
   
RiverSource Trust Midcap Growth Fund II
 
Fund goal to provide long-term growth of capital by investing in primarily high-quality, mid-sized U.S. stocks with significant growth potential.
 
   
RiverSource Trust Stable Capital Fund II
 
Fund goal to preserve principal and income by investing primarily in bonds backed by the U.S. Government.
 
   
Self-Directed Brokerage Account
 
Account that provides participants access to a wide range of common stocks and mutual funds beyond those available through the Plan.
 
   
Templeton Foreign Fund
 
Funds seeks long-term capital growth by investing primarily in equity securities of companies outside the U.S.
 
   
WESCO International Stock Fund
 
Fund that invests in the stock of WESCO International, Inc.
    An account is maintained for each participant, which is credited with the participant’s contributions and an allocation of Company contributions and plan earnings. Allocations are based on participant contributions or account balances, as defined by the Plan. The benefit to which a participant is entitled is the benefit that can be provided from that participant’s account.
 
2.   Summary of Significant Accounting Policies
 
    Accounting Principles
 
    The financial statements of the Plan have been prepared in accordance with accounting principles generally accepted in the United States of America. The following are the significant accounting policies followed by the Plan:
 
    Basis of Accounting
 
    The accounting records of the Plan are maintained on the accrual basis of accounting.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2006 and 2005
    Investment Valuation and Income Recognition
 
    Investments are carried at fair value in the accompanying financial statements. Investments in common/collective trust funds are valued by the trustee based on market values of all assets in the funds’ securities portfolio and the number of units in the funds owned by the Plan. Investments in the WESCO International Stock Fund, registered investment companies and common stocks are valued at quoted market prices. Participant loans are valued at cost, which approximates fair value.
 
    Purchases and sales of securities are recorded on a settlement date basis. Dividends are recorded on the ex-dividend date.
 
    Net Appreciation in Value of Investments
 
    The Plan presents in the statement of changes in net assets available for benefits the net appreciation in the fair value of its investments, which consists of the realized gains and the unrealized appreciation in common/collective trusts, registered investment companies, WESCO International stock and other common stocks.
 
    Use of Estimates
 
    The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make significant estimates and assumptions. These may affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of additions and deductions during the reporting period. Actual results could differ from those estimates.
 
    Risks and Uncertainties
 
    The Plan provides for various investment options in any combination of stocks, bonds, fixed income securities and other investment securities. Investment securities are exposed to various risks, such as interest rate, market and credit. Due to the level of risk associated with certain investment securities and the level of uncertainty related to changes in the value of investment securities, it is at least reasonably possible that changes in the near-term could materially affect participants’ account balances and the amounts reported in the statements of net assets available for benefits and the statement of changes in net assets available for benefits.
 
    Other
 
    Administrative expenses, excluding participant loan setup fees, distribution fees and hardship withdrawal fees, are paid by the Company and, therefore, are not expenses of the Plan.
 
    Benefits are recorded when paid.
 
3.   Tax Status
 
    The Internal Revenue Service has determined and informed the Company by a letter dated October 15, 2003, that the Plan is designed in accordance with Section 401(a) of the Internal Revenue Code (“IRC”) and, therefore, is exempt from federal taxes under provisions of Section 501(a). Accordingly, no provision for income taxes has been included in the Plan’s financial statements. The Plan has been amended since reviewing the determination letter. However, the Plan administrator and the Plan’s tax counsel believe that the Plan is designed and is currently being operated in compliance with the applicable requirements of the IRC.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2006 and 2005
4.   Employee Loans
 
    Participants are permitted to borrow against a portion of their vested account balance within the prescribed limitations and pursuant to nondiscriminatory rules established by the Administrative Committee. Each loan is to be repaid over a period not to exceed five years.
 
    The interest rate applied to employee loans is established each month by the Administrative Committee at 1% above the PNC Bank prime interest rate. The interest rate on new loans ranged between 8.25% and 9.25% for the fiscal year ended December 29, 2006. Principal and interest payments are generally made through monthly payroll deductions and are credited to the participant’s individual account. Loans of approximately $2,899,000 were made from the Plan and loan principal repayments of approximately $2,439,000 were received by the Plan for the year ended December 29, 2006. Interest of approximately $347,000 was received by the Plan for the year ended December 29, 2006 related to employee loans.
 
5.   Plan Termination
 
    Although the Company has not expressed any intent to do so, it has the right under the Plan to discontinue its contributions at any time and to terminate the Plan subject to the provisions of ERISA. In the event the Plan terminates, participants will become 100% vested in their accounts, and all vested assets shall be distributed to such participants in accordance with the terms of the Plan, or in such other manner, not inconsistent with the requirements of any applicable law or regulation, as the Company may in its sole discretion determine.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Notes to Financial Statements
December 29, 2006 and 2005
6.   Investments
 
    Investments representing 5% or more of the net assets available for benefits as of December 29, 2006 and 2005 were as follows:
                 
    2006   2005
AMCAP Fund
  $ 38,695,861     $ 36,550,606  
American Balanced Fund
    34,396,265       31,417,575  
American Century Value Fund *
          18,553,434  
RiverSource Equity Index Fund I
    34,095,546       31,012,651  
RiverSource Midcap Growth Fund II *
    22,844,600        
RiverSource Stable Capital Fund II
    75,828,416       63,796,144  
Columbia Acorn Fund
    34,580,419       30,581,112  
Templeton Foreign Fund
    20,529,960       15,397,100  
 
*   These funds did not represent 5% or more of the net assets available for benefits as of the respective Plan year-end.
7.   Related Party Transactions
 
    Certain investments of the Plan are mutual funds managed by Ameriprise. The trustee of the Plan is Ameriprise Trust Company. Participants of the Plan may also elect to invest in WESCO International, Inc. common stock within the WESCO Pooled Stock Fund. WESCO International, Inc. owns 100% of the Company. Therefore, these transactions qualify as party-in-interest transactions. Purchases and sales within the WESCO Pooled Stock Fund for 2006 were $2,433,000 and $5,915,000, respectively, and purchases and sales for 2005 were $2,513,000 and $4,026,000, respectively.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2006
  Schedule H, line 4i
                         
(a)   (b)   (c)   (d)     (e)  
        Description of Investment              
    Identity of Issue,   Including Maturity Date,              
    Borrower, Lessor or   Rate of Interest, Collateral,           Current  
    Similar Party   Par, or Maturity Value   Cost     Value  
     
 
  Alger Institutional Funds   Alger Midcap Growth Institutional         $ 4,665,275  
 
  AMCAP Fund   AMCAP Fund (Class R-4)           38,695,861  
*
  RiverSource Trust   Midcap Value Fund Class R4           22,844,600  
*
  RiverSource Trust   Stable Capital Fund II           75,828,416  
*
  RiverSource Trust   Equity Index Fund I           34,095,546  
 
  American Funds   American Balanced Fund (Class A)           34,396,265  
 
  Columbia Mutual Funds   Columbia Acorn Fund (Class A)           34,580,419  
 
  Columbia Mutual Funds   Columbia Core Bond Fund (A)           8,043,715  
 
  MFS Family of Funds   MFS Value Fund (Class A)           12,431,352  
*
  Participant Promissory Notes   5.0%-10.5% with maturity dates through 2011           5,317,701  
 
  Manning & Napier Promix Funds   Manningnapier Promix Conserv Trust           1,182,420  
 
  Manning & Napier Promix Funds   Manningnapier Promix Extended Trust           4,022,385  
 
  Manning & Napier Promix Funds   Manningnapier Promix Maximum Trust           5,722,462  
 
  Manning & Napier Promix Funds   Manningnapier Promix Moderate Trust           3,023,525  
 
  Templeton Funds   Templeton Foreign Fund (A)           20,529,960  
*
  WESCO International, Inc.   WESCO International Pooled Stock Fund           13,986,271  
 
  ABB Ltd Adr   Common Stock           12,586  
 
  Alcatel-Lucent Ads   Common Stock           825  
 
  Altria Group Inc.   Common Stock           4,291  
 
  American Ammunition Inc.   Common Stock           2  
 
  American Beacon Funds   Americanbeacon Lg Cap Val Fund           4,624  
 
  American Century Investments   American Century Equity Income Fund           16,131  
 
  American Century Investments   American Century Mid Cap Value Fund           7,191  
 
  American Eagle Outfitters Inc.   Common Stock           8,895  
 
  Anglo American Adr   Common Stock           8,690  
 
  Apple Inc.   Common Stock           8,484  
 
  Applied Materials   Common Stock           1,827  
 
  Arcadia Resources, Inc.   Common Stock           36,668  
 
  Artisan Funds   Artisan International Investor Shrs           6,130  
 
  Artisan Funds   Artisan Mid Cap Value Fund           79,599  
 
  Avanex Corporation   Common Stock           284  
 
  Bank America Corp   Common Stock           9,076  
 
  Barclays Plc-Spns Adr   Common Stock           19,186  
 
  Bausch & Lomb   Common Stock           5,310  
 
  Berkshire Hathaway Inc.   Common Stock           10,998  
 
  Bhp Billiton Ltp-Spon Adr   Common Stock           3,975  
 
  Biotime Inc.   Common Stock           27  
 
  Boeing Co.   Common Stock           8,884  
 
  BP PLC   Common Stock           4,630  

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2006
  Schedule H, line 4i
                         
(a)   (b)   (c)   (d)     (e)  
        Description of Investment              
    Identity of Issue,   Including Maturity Date,              
    Borrower, Lessor or   Rate of Interest, Collateral,           Current  
    Similar Party   Par, or Maturity Value   Cost     Value  
     
 
  BP Prudhoe Bay Royalty Trust   Common Stock           3,079  
 
  Brandywine Funds   Income Fund           30,091  
 
  Budget Group Inc.   Common Stock           13  
 
  Carrington Labs   Common Stock           4,493  
 
  Caterpillar Inc.   Common Stock           32,934  
 
  CBS Corp. Class B   Common Stock           215,298  
 
  Celgene Corp.   Common Stock           15,821  
 
  Central European Equity FD Inc.   Asset Fund           12,105  
 
  Charys Holding Co.   Common Stock           19,350  
 
  Chevron Corp.   Common Stock           7,353  
 
  Citigroup Inc.   Common Stock           2,785  
 
  Clinical Data Inc.   Common Stock           2,809  
 
  Compass Minerals International   Common Stock           11,046  
 
  Conocophillips   Common Stock           5,324  
 
  Corning Inc.   Common Stock           1,871  
 
  Costco Whsl Corp. New   Common Stock           5,657  
 
  CTS Corp.   Common Stock           1,570  
 
  Del Global Technologies Corp.   Common Stock           155  
 
  Dodge & Cox Funds   Balanced Fund           27,072  
 
  Dodge & Cox Funds   Stock Fund           17,293  
 
  Dodge & Cox Funds   Income Fund           52,610  
 
  Earthshell Corp.   Common Stock           33  
 
  Eaton Corp.   Common Stock           15,028  
 
  Encana Corp.   Common Stock           4,871  
 
  ENI Spa-Sponsered ADR   Common Stock           5,719  
 
  Excelsior Funds   Value & Restructuring Fund           13,335  
 
  Exide Technologies   Common Stock           34,800  
 
  Exxon Mobil Corp.   Common Stock           6,514  
 
  Federal Mogul Corp.   Common Stock           3,639  
 
  Focus Enhancements   Common Stock           156  
 
  Ford Motor Company   Common Stock           1,878  
 
  Gabelli Funds   Asset Fund           7,179  
 
  Gamco Gold AAA   Gold Fund           22,955  
 
  Gamco International Growth AAA   Foreign Large Growth Fund           8,523  
 
  General Electric   Common Stock           13,396  
 
  Genesis Microchip, Inc.   Common Stock           5,070  
 
  Goldcorp Inc.   Common Stock           2,844  
 
  Hawaiian Electric Ind. Inc.   Common Stock           10,154  
 
  Headwaters Inc.   Common Stock           1,198  

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2006
  Schedule H, line 4i
                         
(a)   (b)   (c)   (d)     (e)  
        Description of Investment              
    Identity of Issue,   Including Maturity Date,              
    Borrower, Lessor or   Rate of Interest, Collateral,           Current  
    Similar Party   Par, or Maturity Value   Cost     Value  
     
 
  Hewlett Packard   Common Stock           20,595  
 
  HSBC Holdings PLC ADR   International Banks Industry           8,249  
 
  I Shares   S&P Trust Fund           153,323  
 
  I Shares   DJ Select Dividend Index Fund           12,731  
 
  I Shares   DJ U.S. Consumer Cycl SEC Fund           3,371  
 
  I Shares   Goldman Sachs Nat Res Ind Fund           45,009  
 
  I Shares   MSCI Austria Index Fund           17,200  
 
  I Shares   FTSE / XINHUA China 25 Ind. FD           16,718  
 
  I Shares   S&P Gloal Finl Sector           11,319  
 
  I Shares   S&P Global 100           5,930  
 
  I Shares   S&P Global Utilities           15,130  
 
  Icon Funds   Icon Healthcare Fund           49,175  
 
  Integral Technologies Inc.   Common Stock           21,432  
 
  Intel Corp.   Common Stock           42,525  
 
  Interplay Entertainment   Common Stock           135  
 
  Invio Biomedical Corp.   Common Stock           4,935  
 
  Ivanhoe Energy, Inc.   Common Stock           135  
 
  Janus Funds   High Yield Fund           12,354  
 
  Janus Funds   Mid Cap Value Fund           43,449  
 
  Janus Funds   Orion Fund           9,990  
 
  Janus Funds   Special Equity Fund           4,881  
 
  Janus Funds   Overseas Fund           78,199  
 
  JDS Uniphase Corp.   Common Stock           4,065  
 
  Johnson & Johnson   Common Stock           5,480  
 
  J.P. Morgan Chase & Co.   Common Stock           9,660  
 
  Kaire Holdings Inc.   Common Stock           6  
 
  Keryx Biopharmaceuticals   Common Stock           2,660  
 
  Kinetics Paradigm Fund   Common Stock           21,813  
 
  Koko Petroleum Inc.   Common Stock           720  
 
  Lasercard Corp.   Common Stock           266  
 
  Lloyds TSB Group PLC-Level I   Common Stock           9,066  
 
  Manhattan Pharmaceuticals   Common Stock           4,004  
 
  Marsico 21st Century Fund   Large Growth Fund           4,710  
 
  Matrix Advisors Value   Common Stock           46,741  
 
  Merck & Co.   Common Stock           5,232  
 
  Meridian Funds   Meridian Growth Fund           21,757  
 
  Meridian Funds   Meridian Value Funds           8,332  
 
  MGRS Fremont Micro Cap MGRS Fd   Common Stock           9,384  
 
  Miramar Mining Corp.   Common Stock           16,724  

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2006
  Schedule H, line 4i
                         
(a)   (b)   (c)   (d)     (e)  
        Description of Investment              
    Identity of Issue,   Including Maturity Date,              
    Borrower, Lessor or   Rate of Interest, Collateral,           Current  
    Similar Party   Par, or Maturity Value   Cost     Value  
     
 
  Mobile Reach Technology   Common Stock              
 
  Nabors Industries Ltd.   Common Stock           1,489  
 
  Nanoforce Inc.   Common Stock           13  
 
  Nastech Pharmaceutical Co.   Common Stock           3,026  
 
  National Rural Utility CFC   Common Stock           8,873  
 
  Neomedia Technologies   Common Stock           530  
 
  Newcastle Investment Corp.   Common Stock           5,888  
 
  Nokia Corp.   Common Stock           6,096  
 
  Nortel Networks Corp.   Common Stock           2,673  
 
  Oakmark Funds   Oakmark Equity and Income Fund (I)           36,799  
 
  Oakmark Funds   Oakmark Fund           13,994  
 
  Oakmark Funds   Oakmark International Fund (Class I)           62,135  
 
  Oakmark Funds   Oakmark Global Fund           51,024  
 
  Occidental Petroleum   Common Stock           4,883  
 
  Oracle Systems   Common Stock           5,142  
 
  Paychex Inc.   Common Stock           5,931  
 
  Pepsico Inc.   Common Stock           938  
 
  Peru Copper Inc.   Common Stock           3,420  
 
  Petrohawk Energy Corp.   Common Stock           3,048  
 
  Photoworks, Inc.   Common Stock           14  
 
  PIMCO Funds   PIMCO PEA Renaissance Fund           10,230  
 
  PIMCO Funds   PIMCO Total Return Fund           8,290  
 
  PNC Financial Services Group   Common Stock           2,073  
 
  Profunds   Profund Ultrasmall Cap Profund I           48,373  
 
  Profunds   Profunds Ultrabull Profund           46,978  
 
  Profunds   Profunds Ultraotc Profund           23,940  
 
  Purchase Pro.com   Common Stock           1  
 
  Qualcomm Inc.   Common Stock           10,014  
 
  Reliant Energy, Inc.   Common Stock           42,630  
 
  Renovo Holdings, Inc.   Common Stock           3  
 
  RiverSource Trust   Money Market Fund II           601,806  
 
  Royce Total Return Fund   Common Stock           6,896  
 
  RS Partners Growth Fund   Common Stock           32,012  
 
  RVS Diversified Equity Income R4   Mutual Fund           8,402  
 
  RVS Strategic Allocation Class R4   Mutual Fund           30,183  
 
  Sasol LTD ADR   Common Stock           12,066  
 
  Schering-Plough   Common Stock           4,728  
 
  Shaw Group Inc.   Common Stock           3,350  
 
  Silver Star Energy   Common Stock           118  

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2006
  Schedule H, line 4i
                         
(a)   (b)   (c)   (d)     (e)  
        Description of Investment              
    Identity of Issue,   Including Maturity Date,              
    Borrower, Lessor or   Rate of Interest, Collateral,           Current  
    Similar Party   Par, or Maturity Value   Cost     Value  
     
 
  Sirius Satellite Radio Inc.   Common Stock           4,829  
 
  Six Flags Inc.   Common Stock           262  
 
  Solomon Alliance Group   Common Stock           1  
 
  Sound Shore Fund   Common Stock           6,888  
 
  Spectrum Signal Processing   Common Stock           25  
 
  SSGA International Stk Selection FD   Mutual Fund           30,285  
 
  Statoil ASA ADR   Common Stock           7,106  
 
  Sun Microsystems   Common Stock           542  
 
  Sysco Corp.   Common Stock           8,639  
 
  T. Rowe Price Funds   Capital Appreciation Fund           117,454  
 
  T. Rowe Price Funds   Growth Stock Fund           91,625  
 
  T. Rowe Price Funds   Media & Telecomm Fund           16,776  
 
  T. Rowe Price Funds   Health Sciences Fund           21,181  
 
  T. Rowe Price Funds   New Era Fund           125,798  
 
  TCW Equities-N   Large Blend Fund           19,438  
 
  Tellabs   Common Stock           2,975  
 
  The India Fund Inc.   Mutual Fund           11,016  
 
  The Muhlenkamp Fund   Mutual Fund           10,214  
 
  The Reserve Funds   Primary Fund Class A           791,700  
 
  Third Avenue   International Value Fund           12,990  
 
  Third Avenue   Real Estate Value Fund           6,829  
 
  Thompson Plumb and Associates   Growth Fund           5,737  
 
  Time Warner Inc.   Common Stock           2,178  
 
  Transocean Inc.   Common Stock           8,089  
 
  TVIA Inc.   Common Stock           2,260  
 
  UMB Scout   International Fund           67,378  
 
  Unigene Labs Inc.   Common Stock           10,291  
 
  USAir Group   Common Stock           1  
 
  Valeant Pharmaceuticals Intl.   Common Stock           1,724  
 
  Vanguard Funds   Wellesley Income Fund           22,008  
 
  Vanguard Funds   Windsor II Fund           30,055  
 
  Viacom Inc. Class B   Common Stock           283,312  
 
  Vioquest Pharmaceuticals   Common Stock           26  
 
  W&T Offshore Inc.   Common Stock           5,038  
 
  Wasatch Heritage Growth Fund   Growth Fund           10,919  
 
  Wells Fargo   Asia Pacific Investment Advisors           491,554  
 
  Wells Fargo   Wells Fargo & Co. New           8,712  
 
  White Mountains Insurance Group   Common Stock           6,374  
 
  Wisdomtree Intl DVD TOP100   International Fund           30,243  
 
  Wisdomtree Diefa H/Y EQ Fund   International Fund           29,640  
 
  XM Satellite Radio   Common Stock           2,163  
 
  Xsunx Inc.   Common Stock           988  
 
                     
 
                  $ 324,411,180  
 
                     
 
*   Denotes party-in-interest, for which a statutory exemption exists.

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Table of Contents

WESCO Distribution, Inc.
Retirement Savings Plan
Schedule of Assets (Held at End of Year)
EIN 25-1723345, Plan Number 001
December 29, 2006
  Schedule H, line 4i
EXHIBITS
     The following exhibit is filed or incorporated as part of this report:
     
Exhibit    
Number   Description
23.01
  Consent of PricewaterhouseCoopers LLP (filed herewith)
SIGNATURE
Pursuant to the requirements of the Securities Exchange Act of 1934, the trustees (or other persons who administer the employees benefit plan) have duly caused this annual report to be signed on its behalf by the undersigned hereunto duly authorized.
         
  WESCO Distribution, Inc.
Retirement Savings Plan
 
 
Date: June 27, 2007  /s/ Stephen A. Van Oss    
  Stephen A. Van Oss    
  Chairman, 401K Retirement Savings Plan Investment and Administrative Committees   
 

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