Transamerica Series Trust

06/16/2026 | Press release | Distributed by Public on 06/16/2026 15:11

Summary Prospectus by Investment Company (Form 497K)

TRANSAMERICA SERIES TRUST

Supplement to the Currently Effective Prospectus, Summary Prospectus and Statement of Additional Information

Transamerica PineBridge Inflation Opportunities VP

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Effective immediately, Gunter H. Seeger no longer serves as a portfolio manager of the portfolio.

Effective immediately, the following replaces the corresponding information for the portfolio in the "Management" section of the Prospectus and Summary Prospectus:

Management:

Investment Manager: Transamerica Asset Management, Inc.

Sub-Adviser: PineBridge Investments LLC

Portfolio Managers:

Robert A. Vanden Assem, CFA

Co-Portfolio Manager since November 2014

Roberto Coronado

Co-Portfolio Manager since October 2016

Effective immediately, the following replaces the corresponding information for the portfolio in the "Shareholder Information - Portfolio Manager(s)" section of the Prospectus :

Transamerica PineBridge Inflation Opportunities VP

Name Sub-Adviser Positions Over Past Five Years
Robert A. Vanden Assem, CFA PineBridge Investments LLC Co-Portfolio Manager of the portfolio since 2014; Employee of PineBridge Investments LLC since 2001; Managing Director and Head of Investment Grade Fixed-Income
Roberto Coronado PineBridge Investments LLC Co-Portfolio Manager of the portfolio since 2016; Employee of PineBridge Investments LLC since 2014; Managing Director and Senior Portfolio Manager of Global Rates and Investment Grade Fixed-Income

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Effective immediately, the following replaces the corresponding information under the section in Appendix B of the Statement of Additional Information entitled "Portfolio Managers - PineBridge Investments LLC ("PineBridge")":

Transamerica PineBridge Inflation Opportunities VP

Portfolio Manager

Registered Investment

Companies

Other Pooled Investment

Vehicles

Other Accounts
Number  

Assets

Managed  

Number  

Assets

Managed  

Number  

Assets

Managed  

Robert A. Vanden Assem, CFA 5 $1.66 billion 13 $5.21 billion 17 $5.94 billion
Roberto Coronado 2 $423 million 3 $1.14 million 2 $136 million

Fee Based Accounts

(The number of accounts and the total assets in the accounts managed by each portfolio manager with

respect to which the advisory fee is based on the performance of the account.)

Robert A. Vanden Assem, CFA 0 $0 0 $0 3 $849 million
Roberto Coronado 0 $0 0 $0 0 $0

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Investors Should Retain this Supplement for Future Reference

June 16, 2026

Transamerica Series Trust published this content on June 16, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on June 16, 2026 at 21:11 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]