SunAmerica Series Trust

08/04/2026 | Press release | Distributed by Public on 08/04/2026 12:03

Prospectus by Investment Company (Form 497)

Filed under Rule 497(e)
Registration No. 033-52742

SunAmerica Series Trust

SA AB Growth Portfolio

(the "Portfolio")

Supplement dated August 4, 2026

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

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

Effective immediately, in the table under the section entitled "Portfolio Managers - Other Accounts," the information pertaining to AllianceBernstein is deleted in its entirety 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
Accounts
Assets (in
millions)
No. of
Accounts
Total Assets
(in millions)
No. of
Accounts
Total Assets
(in millions)

Alliance-

Bernstein

Fogarty, John H., CFA 8 $31,203 26 $60,755 3,262 $15,915
Lisser, Joshua 34 $44,507 10 $1,972 70 $36,073
MacGregor, James 10 $3,387 47 $2,038 52 $6,224
Sklar, Ben 34 $44,507 10 $1,972 63 $34,005
Thapar, Vinay, CFA 8 $31,203 26 $60,755 3,262 $15,915
Singhvi, Shri, CFA 6 $2,988 5 $587 21,486 $19,514
Turenchalk, Erik 8 $3,366 42 $1,392 52 $6,224

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-SUP6 (7/26)

SunAmerica Series Trust published this content on August 04, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on August 04, 2026 at 18:03 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 If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]