# EDGAR Filing Document

**Accession Number:** 0000892538
**File Stem:** 0001193125-25-217243
**Filing Date:** 2025-9
**Character Count:** 4459
**Document Hash:** 03debbe80155827aea51e8f2e673b965
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-217243.hdr.sgml**: 20250925

**ACCESSION NUMBER**: 0001193125-25-217243

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250925

**DATE AS OF CHANGE**: 20250925

**EFFECTIVENESS DATE**: 20250925

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SUNAMERICA SERIES TRUST
- **CENTRAL INDEX KEY:** 0000892538

**ORGANIZATION NAME:**
- **EIN:** 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:** 251342931

**BUSINESS ADDRESS:**
- **STREET 1:** 21650 OXNARD STREET, 10TH FLOOR
- **CITY:** WOODLAND HILLS
- **STATE:** CA
- **ZIP:** 91367
- **BUSINESS PHONE:** 551-235-3560

**MAIL ADDRESS:**
- **STREET 1:** 30 HUDSON STREET
- **STREET 2:** 16TH FLOOR
- **CITY:** JERSEY CITY
- **STATE:** NJ
- **ZIP:** 07302

## Series and Classes Contracts Data

### SA Fixed Income Intermediate Index Portfolio (Series ID: S000059206)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000193973 | Class 1      |  |
| C000193974 | Class 3      |  |

**Filed under Rules 497(e) and 497(k)<br>Registration No. 33-52742** 

**SunAmerica Series Trust** 

SA Fixed Income Index Portfolio

SA Fixed Income Intermediate Index Portfolio

(the "Portfolios" and each, a "Portfolio")

Supplement dated September 25, 2025

to each Portfolio's Summary Prospectus and Prospectus dated

May 1, 2025, as supplemented and amended to date

Effective immediately, Karen Uyehara, a portfolio manager of the Portfolios with BlackRock Investment Management, LLC, is removed from each Portfolio's Summary Prospectus and Prospectus. Additionally, effective immediately, in the section of each Summary Prospectus entitled "**Investment Adviser**" and in the section of the Prospectus entitled "**Portfolio Summary: SA Fixed Income Index Portfolio – Investment Adviser**," and "**Portfolio Summary: SA Fixed Income Intermediate Index Portfolio – Investment Adviser**," as applicable, in the table under the heading "Portfolio Managers" the following information is added:

---

| | |
|:---|:---|
| **Name and Title** | **Portfolio Manager of the Portfolio**<br> **Since** |
| &nbsp;&nbsp;&nbsp; Jonathan Graves, CFA<br> Managing Director | August 2025 |
| &nbsp;&nbsp;&nbsp; Marcus Tom<br> Director | August 2025 |

---

In the section of the Prospectus entitled "**Management**," under the heading "**Information about the Subadviser**," the 12<sup>th</sup> and 13<sup>th</sup> paragraphs under "**BlackRock Investment Management, LLC ("BlackRock")**" are deleted in their entirety and replaced with the following:

The *SA Fixed Income Index Portfolio* and the *SA Fixed Income Intermediate Index Portfolio* are managed by Jonathan Graves, Marcus Tom and James Mauro.

Jonathan Graves, CFA, Managing Director, is Head of Credit within BlackRock's Index Fixed Income ("IFI") Portfolio Management team in the Americas. Mr. Graves' team is responsible for managing US based iShares and indexed corporate credit portfolios. Previously, Mr. Graves was a senior portfolio manager in the US Fixed Income Group responsible for implementing credit trading across investment grade, high yield and credit long/short strategies. Prior to joining Barclay's Global Investors ("BGI"), which merged with BlackRock in 2009, he managed active investment grade corporate bond portfolios at Banc of America Capital Management. Mr. Graves earned a BS degree in finance from the California State University, Northridge in 1987 and an MBA in finance from the University of California, Los Angeles in 1997.

Marcus Tom, Director, is head of BlackRock's IFI Portfolio Management team in Atlanta. Mr. Tom's service with the firm dates back to 2000, including his years with BGI. At BGI, he was an institutional index portfolio manager/trader. Currently, he leads the Securitized, US Rates, and Optimized Outcome Solutions teams across IFI's suite of portfolios. His sector specialties include Agency MBS, US Treasuries, TIPS, Agencies, and Listed and OTC Derivatives. Mr. Tom earned a BA degree in Managerial Economics from the University of California, Davis, in 1999.

SCSP-86704C-FII1

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

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

SCSP-86704C-FII1