Washington Mutual Investors Fund

Washington Mutual Investors Prospectus July 1, 2012 FundSM Class Ticker A AWSHX B WSHBX C WSHCX F-1 WSHFX F-2 WMFFX 529-A CWMAX 529-B CWMBX 529-C CWMCX 529-E CWMEX 529-F-1 CWMFX R-1 RWMAX R-2 RWMBX R-3 RWMCX R-4 RWMEX R-5 RWMFX R-6 RWMGX Table of contents Investment objective 1 Fees and expenses of the fund 1 Principal investment strategies 3 Principal risks 4 Investment results 5 Management 7 Purchase and sale of fund shares 7 Tax information 7 Payments to broker-dealers and other financial intermediaries 7 Investment objective, strategies and risks 8 Management and organization 10 Shareholder information 13 Purchase, exchange and sale of shares 14 How to sell shares 19 Distributions and taxes 22 Choosing a share class 23 Sales charges 24 Sales charge reductions and waivers 26 Rollovers from retirement plans to IRAs 30 Plans of distribution 31 Other compensation to dealers 31 Fund expenses 32 Financial highlights 34 The U.S. Securities and Exchange Commission has not approved or disapproved of these securities. Further, it has not determined that this prospectus is accurateor complete.Any representation to the contrary is a criminal offense. Prospectus Supplement January 14, 2013 For the following funds with effective prospectuses dated February 1, 2012 – December 1, 2012 AMCAP Fund® American Balanced Fund® American Funds Money Market Fund® American Funds Mortgage Fund® American Funds Short-Term Tax-Exempt Bond Fund® American Funds Tax-Exempt Fund of New York® American High-Income Municipal Bond Fund® American High-Income Trust® The Bond Fund of America® Capital World Bond Fund® Capital World Growth and Income Fund,® Inc. EuroPacific Growth Fund® Fundamental InvestorsSM The Growth Fund of America,® Inc. The Income Fund of America® Intermediate Bond Fund of America® International Growth and Income FundSM The Investment Company of America® Limited Term Tax-Exempt Bond Fund of America® The New Economy Fund® New Perspective Fund® Short-Term Bond Fund of America® SMALLCAP World Fund,® Inc. The Tax-Exempt Bond Fund of America® The Tax-Exempt Fund of California® The Tax-Exempt Fund of Maryland® The Tax-Exempt Fund of Virginia® U.S. Government Securities Fund® Washington Mutual Investors FundSM The following paragraph is deleted from the “How to sell shares” section of the prospectus under the heading “Frequent trading of fund shares.” The fund’s purchase blocking policy is temporarily suspended. Please see americanfunds.com for more information on the suspension. Although the policy is suspended, the fund and American Funds Distributors will continue to restrict frequent trading of fund shares or other potentially abusive trading as described in this prospectus. Keep this supplement with your prospectus. The Tax-Exempt Fund of Maryland® The Tax-Exempt Fund of Virginia® Washington Mutual Investors FundSM Prospectus Supplement December 26, 2012 (for prospectuses dated July 1, 2012 – October 1, 2012) 1. The paragraph under the heading “Business manager” in the “Management and organization” section of the Prospectus is amended in its entirety to read as follows: Business manager Washington Management Corporation or its predecessors has, since the fund’s inception, provided the services necessary to carry on the fund’s general administrative and corporate affairs. These services encompass matters relating to general corporate governance, regulatory compliance and monitoring of the fund’s contractual service providers, including custodian operations, shareholder services and fund share distribution functions. Pursuant to a merger agreement that became effective as of December 21, 2012, Washington Management Corporation is a wholly owned subsidiary of Capital Research and Management Company. Washington Management Corporation maintains its principal business address at 333 South Hope Street, Los Angeles, California 90071, and 6455 Irvine Center Drive, Irvine, California 92618. 2. The section under the heading “E-delivery and household mailings” on the back cover of the Prospectus is amended in its entirety to read as follows: E-delivery and household mailings Each year you are automatically sent an updated summary prospectus and annual and semi-annual reports for the fund. You may also occasionally receive proxy statements for the fund. In order to reduce the volume of mail Continued you receive, when possible, only one copy of these documents will be sent to shareholders who are part of the same family and share the same household address. You may elect to receive these documents electronically in lieu of paper form by enrolling in e-delivery on our website, americanfunds.com. If you would like to opt out of household-based mailings or receive a complimentary copy of the current SAI, codes of ethics, annual/semi-annual report to shareholders or applicable program description, please call American Funds Service Company at 800/421-4225 or write to the secretary of the fund at 6455 Irvine Center Drive, Irvine, California 92618. Keep this supplement with your prospectus. Prospectus Supplement December 1, 2012 For the following funds with effective prospectuses dated January 1, 2012 – December 1, 2012 AMCAP Fund® American Balanced Fund® American Funds Global Balanced FundSM American Funds Money Market Fund® American Funds Mortgage Fund® American Funds Portfolio SeriesSM American Funds Short-Term Tax-Exempt Bond Fund® American Funds Tax-Exempt Fund of New York® American High-Income Municipal Bond Fund® American High-Income Trust® American Mutual Fund® The Bond Fund of America® Capital Income Builder® Capital World Bond Fund® Capital World Growth and Income Fund,® Inc. EuroPacific Growth Fund® Fundamental InvestorsSM The Growth Fund of America,® Inc. The Income Fund of America® Intermediate Bond Fund of America® International Growth and Income FundSM The Investment Company of America® Limited Term Tax-Exempt Bond Fund of America® The New Economy Fund® New Perspective Fund® New World Fund,® Inc. Short-Term Bond Fund of America® SMALLCAP World Fund,® Inc. The Tax-Exempt Bond Fund of America® The Tax-Exempt Fund of California® The Tax-Exempt Fund of Maryland® The Tax-Exempt Fund of Virginia® U.S. Government Securities Fund® Washington Mutual Investors FundSM The following is added to the “How to sell shares” section of the prospectus under the heading “Frequent trading of fund shares.” The fund’s purchase blocking policy is temporarily suspended. Please see americanfunds.com for more information on the suspension. Although the policy is suspended, the fund and American Funds Distributors will continue to restrict frequent trading of fund shares or other potentially abusive trading as described in this prospectus. Keep this supplement with your prospectus. ... - tailieumienphi.vn