# EDGAR Filing Document

**Accession Number:** 0001860434
**File Stem:** 0001193125-26-118928
**Filing Date:** 2026-3
**Character Count:** 2222
**Document Hash:** 98d81651e2811eed9c68568f9b486739
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-118928.hdr.sgml**: 20260323

**ACCESSION NUMBER**: 0001193125-26-118928

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20260323

**DATE AS OF CHANGE**: 20260323

**EFFECTIVENESS DATE**: 20260323

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Harbor ETF Trust
- **CENTRAL INDEX KEY:** 0001860434

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

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-255884
- **FILM NUMBER:** 26780586

**BUSINESS ADDRESS:**
- **STREET 1:** 111 SOUTH WACKER DRIVE
- **STREET 2:** 34TH FLOOR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 312-443-4400

**MAIL ADDRESS:**
- **STREET 1:** 111 SOUTH WACKER DRIVE
- **STREET 2:** 34TH FLOOR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

## Series and Classes Contracts Data

### Harbor Multi-Asset Explorer ETF (Series ID: S000080799)

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|  |  |  |
|:---|:---|:---|
| Class Name                      | Ticker Symbol | Class ID   |
| Harbor Multi-Asset Explorer ETF | MAPP          | C000243340 |

---

## Series and Classes Contracts Data

### Harbor Multi-Asset Explorer ETF (Series ID: S000080799)

| Class ID   | Class Name                      | Ticker Symbol   |
|:---|:---|:---|
| C000243340 | Harbor Multi-Asset Explorer ETF | MAPP            |

![](g46231img4fe847b11.jpg)

**Harbor Multi-Asset Explorer ETF** <br>

**Supplement dated March 23, 2026 to the Prospectus, Summary Prospectus, and Statement of Additional Information, dated March 1, 2026**

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As of March 25, 2026 (the "Effective Date"), Jake Schurmeier will no longer serve as portfolio manager to Harbor Multi-Asset Explorer ETF (the "Fund"), a series of Harbor ETF Trust. All references to Mr. Schurmeier in the Fund's Prospectus, Summary Prospectus, and Statement of Additional Information are hereby removed as of the Effective Date. The Fund will continue to be managed by the remaining portfolio managers using a team approach.

*Investors Should Retain This Supplement For Future Reference*

S0326.P.SP.SAI.ETF

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