July 6, 2026

 

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, D.C. 20549-3628

 

Re: Washington Mutual Investors Fund
  File Nos. 002-11051 and 811-00604

 

Dear Sir or Madam:

 

Pursuant to Rule 497(j), I hereby certify that no changes have been made to the forms of Statement of Additional Information since the electronic filing on June 30, 2026 of Registrant’s Post-Effective Amendment No. 154 under the Securities Act of 1933 and Amendment No. 82 under the Investment Company Act of 1940, as amended.

 

Sincerely,

 

/s/ Michael R. Tom

Michael R. Tom

Secretary