# EDGAR Filing Document

**Accession Number:** 0000892538
**File Stem:** 0001193125-23-054068
**Filing Date:** 2023-2
**Character Count:** 1992
**Document Hash:** 534f237be4679c429e8c6a93c47e5986
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-054068.hdr.sgml**: 20230228

**ACCESSION NUMBER**: 0001193125-23-054068

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230228

**DATE AS OF CHANGE**: 20230228

**EFFECTIVENESS DATE**: 20230228

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SUNAMERICA SERIES TRUST
- **CENTRAL INDEX KEY:** 0000892538
- **IRS NUMBER:** 137002445
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0131

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-52742
- **FILM NUMBER:** 23686652

**BUSINESS ADDRESS:**
- **STREET 1:** 21650 OXNARD STREET, 10TH FLOOR
- **CITY:** WOODLAND HILLS
- **STATE:** CA
- **ZIP:** 91367
- **BUSINESS PHONE:** 201-324-6378

**MAIL ADDRESS:**
- **STREET 1:** HARBORSIDE 5
- **STREET 2:** 185 HUDSON STREET, SUITE 3300
- **CITY:** JERSEY CITY
- **STATE:** NJ
- **ZIP:** 07311

## Series and Classes Contracts Data

### SA MFS Total Return Portfolio (Series ID: S000008104)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000022035 | Class 1      |  |
| C000022036 | Class 2      |  |
| C000022037 | Class 3      |  |

**Filed under Rules 497(e) and 497(k)** 

**Registration No. 33-52742** 

**SunAmerica Series Trust** 

SA MFS Total Return Portfolio

(the "Portfolio")

Supplement dated February 28, 2023 to the Portfolio's

Summary Prospectus, Prospectus and Statement of Additional Information,

each dated May 1, 2022, as supplemented and amended to date

Henry Peabody, previously a portfolio manager with Massachusetts Financial Services Company ("MFS"), the Portfolio's subadviser, has left MFS and is no longer a portfolio manager of the Portfolio. Accordingly, effective immediately, all references to Mr. Peabody are hereby deleted from the Portfolio's Summary Prospectus, Prospectus and Statement of Additional Information.

**PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.** 

SCSP-8670-TRP1.2 (2/23)