SunAmerica Series Trust

06/24/2026 | Press release | Distributed by Public on 06/24/2026 10:45

Prospectus by Investment Company (Form 497)

Filed under Rule 497(e)

Registration No. 33-52742

SunAmerica Series Trust

SA Global Index Allocation 60/40 Portfolio

SA Global Index Allocation 75/25 Portfolio

SA Global Index Allocation 90/10 Portfolio

SA Index Allocation 60/40 Portfolio

SA Index Allocation 80/20 Portfolio

SA Index Allocation 90/10 Portfolio

SA VCP Dynamic Allocation Portfolio

SA VCP Dynamic Strategy Portfolio

SA VCP Index Allocation Portfolio

(the "Portfolios")

Supplement dated June 24, 2026

to the Portfolios' Statement of Additional Information ("SAI")

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

Effective July 1, 2026, in the table under the section entitled "PORTFOLIO MANAGERS - Other Accounts," in the section pertaining to SunAmerica Asset Management, LLC ("SunAmerica"), the information pertaining to Andrew Sheridan is hereby deleted and replaced with the following:

Adviser/

Subadviser

Portfolio

Managers

Other Accounts

(As of January 31, 2026)

Registered

Investment

Companies

Pooled Investment

Vehicles

Other Accounts
No. of
Acc
oun
ts

Assets

(in

millions)

No. of
Accounts

Total Assets

(in
millions)

No. of
Acco

unts

Total Assets

(in millions)

SunAmerica

Singh, Manisha

4 $1,656,672 -- -- -- --

Wu, Robert

4 $1,656,672 -- -- -- --

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-SUP5.1 (6/26)

SunAmerica Series Trust published this content on June 24, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on June 24, 2026 at 16:45 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 If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]