# EDGAR Filing Document

**Accession Number:** 0000778207
**File Stem:** 0001193125-26-156682
**Filing Date:** 2026-4
**Character Count:** 2990
**Document Hash:** 32cf067251cec86681f0b2773accffdd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-156682.hdr.sgml**: 20260415

**ACCESSION NUMBER**: 0001193125-26-156682

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 10

**FILED AS OF DATE**: 20260415

**DATE AS OF CHANGE**: 20260415

**EFFECTIVENESS DATE**: 20260415

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** TRANSAMERICA SERIES TRUST
- **CENTRAL INDEX KEY:** 0000778207

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-00507
- **FILM NUMBER:** 26863702

**BUSINESS ADDRESS:**
- **STREET 1:** 1801 CALIFORNIA STREET
- **STREET 2:** SUITE 5200
- **CITY:** DENVER
- **STATE:** CO
- **ZIP:** 80202
- **BUSINESS PHONE:** 720-482-8836

**MAIL ADDRESS:**
- **STREET 1:** 1801 CALIFORNIA STREET
- **STREET 2:** SUITE 5200
- **CITY:** DENVER
- **STATE:** CO
- **ZIP:** 80202

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AEGON/TRANSAMERICA SERIES TRUST
- **DATE OF NAME CHANGE:** 20050511

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AEGON/TRANSAMERICA SERIES FUND INC
- **DATE OF NAME CHANGE:** 20010501

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** WRL SERIES FUND INC
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### Transamerica WMC US Growth VP (Series ID: S000007921)

---

|  |  |
|:---|:---|
| Class Name | Class ID   |
| Initial    | C000021487 |
| Service    | C000021488 |

---

## Series and Classes Contracts Data

### Transamerica WMC US Growth VP (Series ID: S000007921)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000021487 | Initial      |  |
| C000021488 | Service      |  |

?xml version='1.0' encoding='ASCII'? 497

------

#### TRANSAMERICA SERIES TRUST

#### Supplement to the Currently Effective Prospectus and Summary Prospectus

#### \* \* \*

#### Transamerica WMC US Growth VP

#### \* \* \*
*Effective immediately, the information below supplements and supersedes certain corresponding information contained in the Prospectus and Summary Prospectus concerning the portfolio.* 

*The last paragraph of the portfolio's "Principal Investment Strategies" section in the Prospectus and Summary Prospectus and the fifth paragraph of the "More on Each Portfolio's Strategies and Investments" section in the Prospectus relating to the portfolio are deleted in their entirety and replaced as follows:* 

Consistent with the portfolio's objective and other policies, the portfolio may, but is not required to, invest to a lesser extent in derivatives, including futures, forwards, options and swaps primarily for cash equitization purposes. The portfolio may invest up to 20% of its total assets in foreign securities, including American Depositary Receipts, American Depositary Shares and U.S. dollar denominated securities of foreign issuers.

#### Investors Should Retain this Supplement for Future Reference

#### April 15, 2026