TRANSAMERICA SERIES TRUST

Supplement to the Currently Effective Prospectus, Summary Prospectuses

and Statement of Additional Information

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Transamerica MSCI EAFE Index VP

Effective March 1, 2023, the following replaces the corresponding information in the Prospectus and Summary Prospectus for Transamerica MSCI EAFE Index VP under the section entitled “Management”:

 

Management:

Investment Manager: Transamerica Asset Management, Inc.

Sub-Adviser: SSGA Funds Management, Inc.

Portfolio Managers:

         

Dwayne Hancock, CFA

  

Portfolio Manager

  

since May 2017

Keith Richardson

  

Portfolio Manager

  

since May 2017

Effective March 1, 2023, the following replaces the information in the Prospectus for Transamerica MSCI EAFE Index VP under the section entitled “Shareholder Information – Portfolio Manager(s)”:

 

Name    Sub-Adviser    Positions Over Past Five Years  
     
Dwayne Hancock, CFA    SSGA Funds Management, Inc.    Portfolio Manager of the portfolio since 2017; joined State Street Global Advisors in 1996; Vice President of State Street Global Advisors and Senior Portfolio Manager in the Global Equity Beta Solutions Group  
     
Keith Richardson    SSGA Funds Management, Inc.    Portfolio Manager of the portfolio since 2017; joined State Street Global Advisors in 1999; Vice President of State Street Global Advisors and Senior Portfolio Manager in the Global Equity Beta Solutions Group  

* * *

Effective March 1, 2023, the following replaces the corresponding information in the Statement of Additional Information for Transamerica MSCI EAFE Index VP under the section in Appendix B entitled “Portfolio Managers – SSGA Funds Management, Inc. (“SSGA FM”)”:

 

    

Registered Investment Companies

  

Other Pooled Investment Vehicles

  

Other Accounts

Portfolio Manager    Number    Assets Managed      Number    Assets Managed      Number    Assets Managed  
Dwayne Hancock, CFA        131    $987.51 billion    377    $826.74 billion    521    $515.27 billion
Keith Richardson    131    $987.51 billion    377    $826.74 billion    521    $515.27 billion
 

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.)

Dwayne Hancock, CFA    0    $0    0    $0    0    $0
Keith Richardson    0    $0    0    $0    0    $0

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Transamerica S&P 500 Index VP

Effective March 1, 2023, the following replaces the corresponding information in the Prospectus and Summary Prospectus for Transamerica S&P 500 Index VP under the section entitled “Management”:

 

Management:

Investment Manager: Transamerica Asset Management, Inc.

Sub-Adviser: SSGA Funds Management, Inc.

Portfolio Managers:

         

Keith Richardson

  

Portfolio Manager

  

since January 2019

Karl Schneider

  

Portfolio Manager

  

since May 2017

Effective March 1, 2023, the following replaces the information in the Prospectus for Transamerica S&P 500 Index VP under the section entitled “Shareholder Information – Portfolio Manager(s)”:

 

Name    Sub-Adviser    Positions Over Past Five Years  
     
Keith Richardson    SSGA Funds Management, Inc.    Portfolio Manager of the portfolio since 2019; joined State Street Global Advisors in 1999; Vice President of State Street Global Advisors and Senior Portfolio Manager in the Global Equity Beta Solutions Group  
     
Karl Schneider    SSGA Funds Management, Inc.    Portfolio Manager of the portfolio since 2017; joined State Street Global Advisors in 1997; Managing Director of State Street Global Advisors and Deputy Head of Global Equity Beta Solutions in the Americas  

* * *

Effective March 1, 2023, the following replaces the corresponding information in the Statement of Additional Information for Transamerica S&P 500 Index VP under the section in Appendix B entitled “Portfolio Managers – SSGA Funds Management, Inc. (“SSGA FM”)”:

 

    

Registered Investment Companies

  

Other Pooled Investment Vehicles

  

Other Accounts

Portfolio Manager        Number    Assets Managed      Number    Assets Managed      Number    Assets Managed  
Keith Richardson    131    $987.51 billion    377    $826.74 billion    521    $515.27 billion
Karl Schneider    131    $987.51 billion    377    $826.74 billion    521    $515.27 billion
 

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.)

Keith Richardson    0    $0    0    $0    0    $0
Karl Schneider    0    $0    0    $0    0    $0

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Investors Should Retain this Supplement for Future Reference

February 3, 2023