# EDGAR Filing Document

**Accession Number:** 0000892538
**File Stem:** 0001193125-26-208755
**Filing Date:** 2026-5
**Character Count:** 4375
**Document Hash:** 3aa68d58785e8efaac7cf1ef8bcdb8e9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-208755.hdr.sgml**: 20260506

**ACCESSION NUMBER**: 0001193125-26-208755

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260506

**DATE AS OF CHANGE**: 20260506

**EFFECTIVENESS DATE**: 20260506

**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
- **LEGAL ENTITY IDENTIFIER:** 549300E40BQMHI2LOX26

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-52742
- **FILM NUMBER:** 26947932

**BUSINESS ADDRESS:**
- **STREET 1:** 5300 MEMORIAL DRIVE
- **STREET 2:** SUITE 1150
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77007
- **BUSINESS PHONE:** 551-235-3560

**MAIL ADDRESS:**
- **STREET 1:** ONE WORLD TRADE CENTER, SUITE J
- **STREET 2:** 49TH FL
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10007

## Series and Classes Contracts Data

### SA Franklin Systematic U.S. Large Cap Value Portfolio (Series ID: S000008080)

---

|  |  |
|:---|:---|
| Class Name | Class ID   |
| Class 1    | C000021966 |
| Class 2    | C000021967 |
| Class 3    | C000021968 |

---

### SA Franklin Systematic U.S. Large Cap Core Portfolio (Series ID: S000066710)

---

|  |  |
|:---|:---|
| Class Name | Class ID   |
| Class 3    | C000214975 |
| Class 1    | C000214976 |

---

## Series and Classes Contracts Data

### SA Franklin Systematic U.S. Large Cap Value Portfolio (Series ID: S000008080)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000021966 | Class 1      |  |
| C000021967 | Class 2      |  |
| C000021968 | Class 3      |  |

### SA Franklin Systematic U.S. Large Cap Core Portfolio (Series ID: S000066710)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000214975 | Class 3      |  |
| C000214976 | Class 1      |  |

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

**SunAmerica Series Trust** 

SA Franklin Systematic U.S. Large Cap Core Portfolio

SA Franklin Systematic U.S. Large Cap Value Portfolio

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

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

Supplement dated May 6, 2025

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

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

Effective June 1, 2026, in the table under the section entitled "**PORTFOLIO MANAGERS – Other Accounts**," in the section pertaining to Franklin Advisers, the information replaced with the following:

---

| | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; Adviser/ <br> Subadviser  | Portfolio Managers | **Other Accounts**<br> (As of January 31, 2026) | **Other Accounts**<br> (As of January 31, 2026) | **Other Accounts**<br> (As of January 31, 2026) | **Other Accounts**<br> (As of January 31, 2026) | **Other Accounts**<br> (As of January 31, 2026) | **Other Accounts**<br> (As of January 31, 2026) |
| &nbsp;&nbsp;&nbsp; Adviser/ <br> Subadviser  | Portfolio Managers | Registered Investment<br> Companies | Registered Investment<br> Companies | Pooled Investment<br> Vehicles | Pooled Investment<br> Vehicles | Other Accounts | Other Accounts |
| &nbsp;&nbsp;&nbsp; Adviser/ <br> Subadviser  | Portfolio Managers | No. of<br> Accounts  | Assets<br> (in millions)  | No. of<br> Accounts  | Total Assets<br> (in millions)  | No. of<br> Accounts  | Total Assets<br> (in millions) |
| &nbsp;&nbsp;&nbsp; Franklin<br> Advisers<sup>1</sup> | Risser, Brett<br> Floyd, Chris<br> Adrian H. Chan<br> Meeker, Christopher M.<br> Karzon, Nicholas<br> Raineri, Steven B. | 7<br> 17<br> 31<br> 4<br> 4<br> 5 | $4,770.85<br> $13,122.63<br> $11,698.50<br> $5,556.30<br> $5,556.30<br> $5,774.52 | 9<br> 19<br> 33<br> 2<br> 2<br> 2 | $1,923.51<br> $4,585.49<br> $16,371.53<br> $576.32<br> $576.32<br> $576.32 | 4(1)<br> 9(1)<br> 4<br> 5<br> 5<br> 6 | $1,470.19($608.65) <br> $2,515.66($608.65) <br> $1,483.18<br> $189.24<br> $189.24<br> $189.29 |

---

<sup>1</sup> Values in parentheses () represent accounts and assets that are subject to a performance-based advisory fee.

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-SUP1.5