# EDGAR Filing Document

**Accession Number:** 0001368578
**File Stem:** 0001162044-25-001052
**Filing Date:** 2025-10
**Character Count:** 4940
**Document Hash:** 1a1b582c06e81f49e28d66808d5aa190
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001162044-25-001052.hdr.sgml**: 20251028

**ACCESSION NUMBER**: 0001162044-25-001052

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251028

**DATE AS OF CHANGE**: 20251028

**EFFECTIVENESS DATE**: 20251028

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MSS Series Trust
- **CENTRAL INDEX KEY:** 0001368578

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

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-135714
- **FILM NUMBER:** 251422256

**BUSINESS ADDRESS:**
- **STREET 1:** 8000 TOWN CENTRE DRIVE, SUITE 400
- **CITY:** BROADVIEW HEIGHTS
- **STATE:** OH
- **ZIP:** 44147
- **BUSINESS PHONE:** 440-922-0066

**MAIL ADDRESS:**
- **STREET 1:** 8000 TOWN CENTRE DRIVE, SUITE 400
- **CITY:** BROADVIEW HEIGHTS
- **STATE:** OH
- **ZIP:** 44147

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMM FUNDS
- **DATE OF NAME CHANGE:** 20071002

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FALLEN ANGELS FAMILY OF FUNDS
- **DATE OF NAME CHANGE:** 20070611

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** American Money Management Funds
- **DATE OF NAME CHANGE:** 20060710

## Series and Classes Contracts Data

### One Rock Fund (Series ID: S000067573)

---

|  |  |
|:---|:---|
| Class Name    | Class ID   |
| One Rock Fund | C000217291 |

---

## Series and Classes Contracts Data

### One Rock Fund (Series ID: S000067573)

| Class ID   | Class Name    | Ticker Symbol   |
|:---|:---|:---|
| C000217291 | One Rock Fund |  |

**MSS SERIES TRUST**

One Rock Fund

Ticker: ONERX(the "Fund")

**SUPPLEMENT DATED OCTOBER 28, 2025 TO THE SUMMARY PROSPECTUS, PROSPECTUS** 

**AND STATEMENT OF ADDITIONAL INFORMATION ("SAI") DATED MARCH 31, 2025**

Houston Wrona has been added as a portfolio manager for the Fund.

The disclosure following the paragraph heading "**PORTFOLIO MANAGER**" on the Summary Prospectus and on page 5 of the Prospectus is revised as follows:

*Jeffrey Wrona* - has been the portfolio manager of the Fund since its inception in March 2020. He founded Wrona Investment Management, LLC in 2019 and serves as the firm's President, Portfolio Manager, and CCO.

*Houston Wrona* – has been a portfolio manager of the Fund since September 2025. He serves as the firm's Portfolio Manager and Research Analyst.

In the section entitled "**PORTFOLIO MANAGER**" on page 9 of the Prospectus, Houston Wrona's biography is added as follows:

Houston Wrona has been a portfolio manager of the Fund since September 2025. He joined Wrona Investment Management, LLC in July 2024. Please refer to the SAI for additional information about the Mr. Wrona's compensation, other accounts managed and ownership of shares of the Fund.

The first sentence in the section entitled "**Portfolio Manager**" on page 23 of the SAI is revised as follows:

Jeffrey Wrona and Houston Wrona are the portfolio managers responsible for the day-to-day management of the Fund.

Under Jeffrey Wrona's account managed information table in the section entitled "**Portfolio Manager**" on page 23 of the SAI, the following table is added:

As of September 30, 2025, Houston Wrona also is responsible for the management of the following other types of accounts:

---

| | | | | |
|:---|:---|:---|:---|:---|
| **Account Type** | **Number of Accounts by Account Type** | **Total Assets By Account Type** | **Number of Accounts by Type Subject to a Performance Fee** | **Total Assets By Account Type Subject to a Performance Fee** |
| Registered Investment Companies | 0 | $0 | 0 | $0 |
| Other Pooled Investment Vehicles | 0 | $0 | 0 | $0 |
| Other Accounts | 0 | $0 | 0 | $0 |

---

In the first sentence in the section entitled "**Portfolio Manager**" on page 24 of the SAI is revised as follows:

The Adviser has not identified any material conflicts between the Fund and other accounts managed by Jeffrey Wrona and Houston Wrona.

Under Jeffrey Wrona's "Dollar Range of Equity Securities in the One Rock Fund" table in the section entitled "**Portfolio Manager**" on page 24 of the SAI, the following is added:

The following table shows the dollar range equity securities beneficially owned by the portfolio manager of the Fund as of September 19, 2025.

---

| | |
|:---|:---|
| **Name of Portfolio Manager** | **Dollar Range of Equity Securities in the One Rock Fund** |
| Houston Wrona | $50001-100000 |

---

\* \* \* \* \*

***You should read this Supplement in conjunction with the Fund's Summary Prospectus, Prospectus, and Statement of Additional Information, dated March 31, 2025. These documents are available upon request and without charge by calling the Fund at 1-800-564-3899 or by writing to the Fund at 8000 Town Centre Drive, Suite 400, Broadview Heights, Ohio 44147-4031.***

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

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