SunAmerica Series Trust

11/03/2026 | Press release | Distributed by Public on 11/03/2026 11:08

Prospectus by Investment Company (Form 497)

Filed under Rule 497(e)

Registration No. 33-52742

SunAmerica Series Trust

SA MFS Total Return Portfolio

(the "Portfolio")

Supplement dated November 3, 2026

to the Portfolio's Statement of Additional Information ("SAI")

dated May 1, 2026, as supplemented and amended to date

Effective December 31, 2026, in the table under the section entitled "PORTFOLIO MANAGERS - Other Accounts," in the subsection pertaining to Massachusetts Financial Services Company ("MFS"), the following information for Sheba Alexander is added:

Adviser/

 Subadviser 

Portfolio Managers Other Accounts
(As of November 3, 2026)
Registered Investment  Companies  Pooled Investment Vehicles  Other Accounts

No. of

Accounts

Assets (in millions) No. of Accounts

Total Assets

(in millions)

No. of

Accounts

 Total Assets (in millions) 
MFS    Sheba Alexander  0 $0 0 $0 0 $0

Capitalized terms used but not defined herein shall have the meanings assigned to them by the SAI.

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.

SASTSAI-SUP9 (11/26)

SunAmerica Series Trust published this content on November 03, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on November 03, 2026 at 17:08 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]