1801 California Street, Suite 5200
Denver, Colorado 80202

November 9, 2018

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

VIA EDGAR

RE: Transamerica Series Trust (the “Registrant”)

(File Nos. 033-00507; 811-04419)

Ladies and Gentlemen:

Pursuant to Rule 497 under the Securities Act of 1933, as amended, please find the XBRL-coded version of prospectus disclosure for Transamerica BlackRock Smart Beta 40 VP, Transamerica BlackRock Equity Smart Beta 100 VP, Transamerica BlackRock Smart Beta 50 VP and Transamerica BlackRock Smart Beta 75 VP, each a separate series of the above-referenced Registrant. The attached XBRL-coded prospectus disclosure is based on the disclosure found in the Rule 497 filing for the Registrant filed on August 24, 2018.

Please direct any comments or questions concerning this filing to the undersigned at 727-299-1311.

Very truly yours,

/s/ Cathleen M. Livingstone

Cathleen M. Livingstone

Manager, Registered Products and Distribution

Transamerica Asset Management, Inc.