# EDGAR Filing Document

**Accession Number:** 0001722388
**File Stem:** 0001999371-25-010140
**Filing Date:** 2025-7
**Character Count:** 3376
**Document Hash:** d8b85737892212962daa07305b0e897b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-25-010140.hdr.sgml**: 20250729

**ACCESSION NUMBER**: 0001999371-25-010140

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250729

**DATE AS OF CHANGE**: 20250729

**EFFECTIVENESS DATE**: 20250729

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Tidal Trust III
- **CENTRAL INDEX KEY:** 0001722388

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-221764
- **FILM NUMBER:** 251159521

**BUSINESS ADDRESS:**
- **STREET 1:** CORPORATION TRUST CENTER 1209 ORANGE ST
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19801
- **BUSINESS PHONE:** 4694428424

**MAIL ADDRESS:**
- **STREET 1:** CORPORATION TRUST CENTER 1209 ORANGE ST
- **CITY:** WILMINGTON
- **STATE:** DE
- **ZIP:** 19801

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Impact Shares Trust I
- **DATE OF NAME CHANGE:** 20180319

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Impact Shares Funds I Trust
- **DATE OF NAME CHANGE:** 20171113

## Series and Classes Contracts Data

### Intech S&P Large Cap Diversified Alpha ETF (Series ID: S000090660)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                 | Ticker Symbol | Class ID   |
| Intech S&P Large Cap Diversified Alpha ETF | LGDX          | C000257940 |

---

### Intech S&P Small-Mid Cap Diversified Alpha ETF (Series ID: S000090661)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                     | Ticker Symbol | Class ID   |
| Intech S&P Small-Mid Cap Diversified Alpha ETF | SMDX          | C000257941 |

---

## Series and Classes Contracts Data

### Intech S&P Large Cap Diversified Alpha ETF (Series ID: S000090660)

| Class ID   | Class Name                                 | Ticker Symbol   |
|:---|:---|:---|
| C000257940 | Intech S&P Large Cap Diversified Alpha ETF | LGDX            |

### Intech S&P Small-Mid Cap Diversified Alpha ETF (Series ID: S000090661)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000257941 | Intech S&P Small-Mid Cap Diversified Alpha ETF | SMDX            |

Filed pursuant to Rule 497(e) <br> File Nos. 333-221764 and 811-23312

**Intech S&P Large Cap Diversified Alpha ETF (LGDX)**

**Intech S&P Small-Mid Cap Diversified Alpha ETF (SMDX)**

 

*Each listed on NYSE Arca, Inc.*

July 29, 2025

**Supplement to the** 

**Prospectus,** 

**dated February 26, 2025**

*Effective immediately, in the section of the Prospectus titled "Performance of Similarly Managed Accounts," the second footnote to the table titled "Annualized Total Returns for the Periods Ended December 31, 2024" is amended and restated to read as follows, and is applied to both benchmark indices reflected in the table:*

The investment strategy for the accounts in the Composite (and the SMID Fund) is applied relative to the investment universe represented by the S&P 1000<sup>®</sup> Index, which combines the S&P MidCap 400<sup>®</sup> Index and the S&P SmallCap 600<sup>®</sup> Index. Performance for the S&P 1500<sup>®</sup> Index is also presented to satisfy the SEC's requirement for a broad-based securities market index.

 

 

**Please retain this Supplement for future reference.**