# EDGAR Filing Document

**Accession Number:** 0001342947
**File Stem:** 0001213900-25-127012
**Filing Date:** 2025-12
**Character Count:** 3325
**Document Hash:** 75bd66e5c8608c7813f913d0b12af18b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-25-127012.hdr.sgml**: 20251231

**ACCESSION NUMBER**: 0001213900-25-127012

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 17

**FILED AS OF DATE**: 20251231

**DATE AS OF CHANGE**: 20251231

**EFFECTIVENESS DATE**: 20251231

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** BBH Trust
- **CENTRAL INDEX KEY:** 0001342947

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-129342
- **FILM NUMBER:** 251617062

**BUSINESS ADDRESS:**
- **STREET 1:** 140 BROADWAY
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10005
- **BUSINESS PHONE:** 800-575-1265

**MAIL ADDRESS:**
- **STREET 1:** 140 BROADWAY
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10005

## Series and Classes Contracts Data

### BBH Select Mid Cap ETF (Series ID: S000095661)

---

|  |  |
|:---|:---|
| Class Name             | Class ID   |
| BBH Select Mid Cap ETF | C000264398 |

---

## Series and Classes Contracts Data

### BBH Select Mid Cap ETF (Series ID: S000095661)

| Class ID   | Class Name             | Ticker Symbol   |
|:---|:---|:---|
| C000264398 | BBH Select Mid Cap ETF |  |

?xml version='1.0' encoding='ASCII'?

**BBH TRUST**

**BBH SELECT MID CAP ETF**

(Ticker BBHM)

**SUPPLEMENT DATED DECEMBER 31, 2025**

**TO THE PROSPECTUS** 

**DATED OCTOBER 1, 2025**

*The following information supplements, and to the extent inconsistent therewith, supersedes, certain information in the Prospectus. Defined terms not otherwise defined in this supplement have the same meaning as set forth in the Statement of Additional Information.*

**I.** **Fees and Expenses** 

Effective January 1, 2026, the fee table in the section captioned "Fees and Expenses" on page 1 of the prospectus is deleted in its entirety and replaced with the following:

**Annual Fund Operating Expenses\***

(Expenses that you pay each year as a percentage of the value of your investment)

---

| | |
|:---|:---|
|  | **Class I** |
| Management Fees | 0.72% |
| Distribution (12b-1) Fees |  |
| Other Expenses\*\* | 0.12% |
| Total Annual Fund Operating Expenses | 0.84% |

---

\* Fees reflected in the table as of January 1, 2026.

\*\* Based on estimated expenses for the current fiscal year.

**II.** **Investment Advisory and Administrative Fee** 

Effective January 1, 2026, the section captioned "Investment Advisory and Administration Fee" on page 11 of the prospectus is revised by replacing the last sentence of that section with the following:

**Investment Advisory Fee**

For investment advisory services, the Investment Adviser receives a fee, computed daily and payable monthly, equal to 0.72% of the average daily net assets of the Fund. Prior to January 1, 2026, the Fund paid a combined investment advisory and administration fee to BBH&Co., through a separately identifiable department, computed daily and payable monthly, equal to 0.75% of the average daily net assets of the Fund. A discussion of the Board's most recent approval of the Fund's investment advisory agreement will be available in the Fund's semi-annual report on Form N-CSR for the period ending April 30, 2025.

**PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE.**