# EDGAR Filing Document

**Accession Number:** 0002008836
**File Stem:** 0001999371-25-020114
**Filing Date:** 2025-12
**Character Count:** 1244
**Document Hash:** 82cffc50cc34eeead922b92223b328da
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-25-020114.hdr.sgml**: 20251211

**ACCESSION NUMBER**: 0001999371-25-020114

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251211

**DATE AS OF CHANGE**: 20251211

**EFFECTIVENESS DATE**: 20251211

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** SmartTrust 721
- **CENTRAL INDEX KEY:** 0002008836

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** NY

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-289672
- **FILM NUMBER:** 251564821

**BUSINESS ADDRESS:**
- **STREET 1:** 2001 ROUTE 46 WATERVIEW PLAZA
- **CITY:** PARSIPPANY
- **STATE:** NJ
- **ZIP:** 07054
- **BUSINESS PHONE:** 9732998989

**MAIL ADDRESS:**
- **STREET 1:** 2001 ROUTE 46 WATERVIEW PLAZA
- **CITY:** PARSIPPANY
- **STATE:** NJ
- **ZIP:** 07054

NO SERIES-AND-CLASSES-CONTRACTS-DATA BLOCK FOUND

**SmartTrust 721**

**Supplement to the Prospectus**

Kellanova (Ticker: K) has been acquired in a cash acquisition. Accordingly, notwithstanding anything to the contrary in the prospectus, the portfolio for Defensive 50 Equities Trust, Series 45 no longer includes shares of Kellanova.

Supplement Dated: December 11, 2025