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SUNAMERICA SERIES TRUST

Supplement to the Summary Prospectus dated April 30, 2012

Effective immediately, for the following Portfolio:

Small Company Value Portfolio in the section titled “PORTFOLIO SUMMARY” under the heading “Investment Adviser,” the portfolio manager disclosure for Franklin Advisory Services, LLC (“Franklin Templeton”) is supplemented with the following:

 

Name

   Portfolio Manager of
the Portfolio Since
  

Title

Steven Raineri

       2012      Portfolio Manager

Dated: August 10, 2012