Themes ETF Trust 8-A12BRegistration of securities on exchange

As filed with the Securities and Exchange Commission on November 28, 2023

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-A

FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO

SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

Themes ETF Trust

(Exact name of registrant as specified in its charter)

Delaware

(State of incorporation or organization)

See List Below

(I.R.S. Employer Identification Number)

34 East Putnam Avenue, Suite 112

Greenwich, CT 06830

(Address of registrant’s principal executive offices)

If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c), check the following box. ☑

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d), check the following box. ☐

Securities Act Registration file number to which this form relates: 333-271700

Securities to be registered pursuant to Section 12(g) of the Act: Not applicable.

Item 1. Description of Registrant’s Securities to be Registered.

Reference is made to Pre-Effective Amendment No. 2 to the Registrant’s Registration Statement on Form N-1A (File Nos. 333-271700 and 811-23872), as filed with the U.S. Securities and Exchange Commission (“SEC”) via EDGAR (Accession No. 0001829126-23-007250) on November 9, 2023, which is incorporated herein by reference. Any form of amendment or supplement to the Registration Statement that is subsequently filed with the SEC that relates to the Themes Airlines ETF, Themes Cloud Computing ETF, Themes Cybersecurity ETF, Themes European Luxury ETF, Themes Generative Artificial Intelligence ETF, Themes Global Systemically Important Banks ETF, Themes Gold Miners ETF, Themes Natural Monopoly ETF, Themes US Cash Flow Champions ETF, Themes US R&D Champions ETF or Themes US Small Cap Cash Flow Champions ETF is hereby also incorporated herein by reference.

Item 2. Exhibits

SIGNATURES

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized.