# EDGAR Filing Document

**Accession Number:** 0001976322
**File Stem:** 0001829126-26-002779
**Filing Date:** 2026-3
**Character Count:** 2525
**Document Hash:** 8b1cf4ac3b35db13045434a93973e485
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001829126-26-002779.hdr.sgml**: 20260327

**ACCESSION NUMBER**: 0001829126-26-002779

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260327

**DATE AS OF CHANGE**: 20260327

**EFFECTIVENESS DATE**: 20260327

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Themes ETF Trust
- **CENTRAL INDEX KEY:** 0001976322

**ORGANIZATION NAME:**
- **EIN:** 000000000

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-271700
- **FILM NUMBER:** 26804759

**BUSINESS ADDRESS:**
- **STREET 1:** 34 EAST PUTNAM STREET
- **STREET 2:** SUITE 112
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830
- **BUSINESS PHONE:** (646) 206-1788

**MAIL ADDRESS:**
- **STREET 1:** 34 EAST PUTNAM STREET
- **STREET 2:** SUITE 112
- **CITY:** GREENWICH
- **STATE:** CT
- **ZIP:** 06830

## Series and Classes Contracts Data

### Leverage Shares 2X Long GEMI Daily ETF (Series ID: S000096597)

---

|  |  |
|:---|:---|
| Class Name                             | Class ID   |
| Leverage Shares 2X Long GEMI Daily ETF | C000265492 |

---

## Series and Classes Contracts Data

### Leverage Shares 2X Long GEMI Daily ETF (Series ID: S000096597)

| Class ID   | Class Name                             | Ticker Symbol   |
|:---|:---|:---|
| C000265492 | Leverage Shares 2X Long GEMI Daily ETF |  |

**Filed pursuant to Rule 497(e)**

**Registration No. 333-271700**

**THEMES ETF TRUST**

**Leverage Shares 2X Long GEMI Daily ETF (Ticker: GEMG)**

**Supplement dated March 27, 2026**

**to the Summary Prospectus, Prospectus and Statement of Additional Information, dated November 5, 2025**

The Board of Trustees of Themes ETF Trust has approved a reverse share split for the Leverage Shares 2X Long GEMI Daily ETF (the "Fund") at a proposed split ratio of 1:20. Shareholders will receive 1 share of the Fund for every 20 shares held. The Creation Unit size for the Fund will not change.

The reverse share split will be effective after the close of the U.S. markets on April 23, 2026. Shares of the Fund will begin trading on a split-adjusted basis on April 24, 2026.

The reverse share split will not change the value of a shareholder's investment. The total net assets of the Fund will not change as a result of the reverse share split. However, the number of shares outstanding will be decreased and the net asset value per share will increase proportionally.

\* \* \* \* \*

**PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE**