# EDGAR Filing Document

**Accession Number:** 0002018846
**File Stem:** 0000912938-26-000385
**Filing Date:** 2026-4
**Character Count:** 4181
**Document Hash:** 8df8d41c06fecfaf7b3e00014f52cda4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000912938-26-000385.hdr.sgml**: 20260420

**ACCESSION NUMBER**: 0000912938-26-000385

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260420

**DATE AS OF CHANGE**: 20260420

**EFFECTIVENESS DATE**: 20260420

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** MFS Active Exchange Traded Funds Trust
- **CENTRAL INDEX KEY:** 0002018846

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0228

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-278691
- **FILM NUMBER:** 26874056

**BUSINESS ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-954-5000

**MAIL ADDRESS:**
- **STREET 1:** 111 HUNTINGTON AVENUE
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

## Series and Classes Contracts Data

### MFS Blended Research Core Equity ETF (Series ID: S000095645)

---

|  |  |  |
|:---|:---|:---|
| Class Name                           | Ticker Symbol | Class ID   |
| MFS Blended Research Core Equity ETF | BRCE          | C000264376 |

---

## Series and Classes Contracts Data

### MFS Blended Research Core Equity ETF (Series ID: S000095645)

| Class ID   | Class Name                           | Ticker Symbol   |
|:---|:---|:---|
| C000264376 | MFS Blended Research Core Equity ETF | BRCE            |

![](img_7ef17998e5b64f1.jpg)

SUPPLEMENT TO THE PROSPECTUS

*Supplement dated April 20, 2026, to the Prospectus dated September 30, 2025.*

## MFS <sup>®</sup> Blended Research <sup>®</sup> Core Equity ETF

#### Effective immediately, the sub-section entitled "Portfolio Manager(s)" under the main heading entitled "Summary of Key Information" is restated in its entirety as follows:

#### Portfolio Manager(s)

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;**Portfolio Manager** | &nbsp;&nbsp;&nbsp;**Since** | &nbsp;&nbsp;&nbsp;**Title** |
| &nbsp;&nbsp;Matt Krummell | &nbsp;&nbsp;&nbsp;Inception (October 2025) | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Nathan Bryant | &nbsp;&nbsp;&nbsp;January 2026 | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Jonathan Sage | &nbsp;&nbsp;&nbsp;Inception (October 2025) | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;&nbsp;Inception (October 2025) | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |
| &nbsp;&nbsp;Jenney Zhang | &nbsp;&nbsp;&nbsp;January 2026 | &nbsp;&nbsp;&nbsp;Investment Officer of MFS |

---

Matt Krummell has announced his intention to retire effective April 7, 2027, and he will no longer be a portfolio manager of the fund as of that date.

#### Effective immediately, the sub-section entitled "Portfolio Manager(s)" under the main heading entitled "Management of the Fund" is restated in its entirety as follows:

#### Portfolio Manager(s)
Information regarding the portfolio manager(s) of the fund is set forth below. Further information regarding the portfolio manager(s), including other accounts managed, compensation, ownership of fund shares, and possible conflicts of interest, is available in the fund's SAI.

---

| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp;**Portfolio Manager** | &nbsp;&nbsp;&nbsp;**Primary Role** | &nbsp;&nbsp;&nbsp;**Five Year History** |
| &nbsp;&nbsp;Matt Krummell | &nbsp;&nbsp;Lead Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2001 |
| &nbsp;&nbsp;Nathan Bryant | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2015 |
| &nbsp;&nbsp;Jonathan Sage | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2000 |
| &nbsp;&nbsp;Jed Stocks | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2001 |
| &nbsp;&nbsp;Jenney Zhang | &nbsp;&nbsp;Portfolio Manager | &nbsp;&nbsp;Employed in the investment area of MFS since 2011 |

---

Matt Krummell has announced his intention to retire effective April 7, 2027, and he will no longer be a portfolio manager of the fund as of that date.

EBC-SUP-I-042026

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