# EDGAR Filing Document

**Accession Number:** 0001860434
**File Stem:** 0001193125-26-280567
**Filing Date:** 2026-6
**Character Count:** 6300
**Document Hash:** 6d58b5ef2d47448bcf5a4d0a74cf8f44
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-280567.hdr.sgml**: 20260624

**ACCESSION NUMBER**: 0001193125-26-280567

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260624

**DATE AS OF CHANGE**: 20260624

**EFFECTIVENESS DATE**: 20260624

**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:** 261114679

**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 Active Commodity ETF (Series ID: S000101665)

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|  |  |  |
|:---|:---|:---|
| Class Name                  | Ticker Symbol | Class ID   |
| Harbor Active Commodity ETF | ACOM          | C000271884 |

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## Series and Classes Contracts Data

### Harbor Active Commodity ETF (Series ID: S000101665)

| Class ID   | Class Name                  | Ticker Symbol   |
|:---|:---|:---|
| C000271884 | Harbor Active Commodity ETF | ACOM            |

![](g117834imgaf0b477e1.jpg)

**Harbor Active Commodity ETF**

**Supplement dated June 24, 2026 to the Prospectus, dated June 2, 2026**

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The Prospectus for Harbor Active Commodity ETF (the "Fund") is hereby revised to update Mr. Steele's title.

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***Effective immediately, the "Fund Summary - Portfolio Managers" section of the Fund's Prospectus is revised as follows:*** 

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| | |
|:---|:---|
| ![](g117834pp_steele.jpg)<br>| **Michael Steele**<br> Quantix Commodities LP<br>|

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Mr. Steele is a Portfolio Manager at Quantix and has served as a portfolio manager for the Fund since 2026.

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***Effective immediately, the applicable table in "The Subadvisor" section of the Fund's Prospectus is replaced with the following:***

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

**Quantix Commodities LP**

Quantix Commodities LP, located at 16 Old Track Road, Suite A, Greenwich, CT 06830, serves as Subadvisor to Harbor Active Commodity ETF. The portfolio managers are jointly and primarily responsible for the day-to-day investment decision making for the Fund.

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| | |
|:---|:---|
| **PORTFOLIO MANAGERS** | **PROFESSIONAL EXPERIENCE** |
| **Don Casturo** | Mr. Casturo is a Founding Partner and Chief Investment Officer at <br> Quantix. He had a 20-year career at Goldman Sachs where he was <br> a Partner in the commodity group. From 2015-2018 he was Head <br> of Commodity Trading for all of EMEA. Prior to that he served as <br> Global Commodities COO and managed the Global Investor Products <br> Desk from 2007-2013. In addition, he was the lead Crude Derivatives <br> trader from 1998-2006, member of the LME User Committee, member <br> of the CFTC Market Advisory Committee and speaker at the Position <br> Limit Hearing in 2008. Mr. Casturo began his investment career in <br> 1995.<br>|
| **Daniel Cepeda** | Mr. Cepeda is a Founding Partner and Portfolio Manager at Quantix. <br> During his career at Goldman Sachs, Mr. Cepeda was Head of <br> Commodity Structured Products, Head of Commodity Index Options <br> and Head of Base Metal Derivatives. Mr. Cepeda started his Goldman <br> Sachs career as an Associate in New York, spent two years in London <br> restructuring the Base Metals Derivatives business and was a Managing <br> Director in Commodities for five years. He began his investment <br> career in 1999.<br>|

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| | |
|:---|:---|
| **PORTFOLIO MANAGERS** | **PROFESSIONAL EXPERIENCE** |
| **Tom Glanfield** | Mr. Glanfield is a Founding Partner and Portfolio Manager at Quantix. <br> During his career at Goldman Sachs, he was the Global Head of <br> Investor Swaps Trading, Lead Index Options and Commodity <br> Structured Products Trader, Head of European Oil Products and <br> Global Head of Oil Derivatives. Mr. Glanfield started his Goldman <br> Sachs career in Commodity Investor Products business with a focus <br> on new product development before moving to the trading side of <br> the business where he ultimately ran the largest commodity index <br> swaps book and oversaw index futures trading for Goldman Sachs. <br> Mr. Glanfield was a Managing Director in commodities for six years <br> and worked in both New York and London. He began his investment <br> career in 2002.<br>|
| **Marta Kavchak** | Ms. Kavchak is a Portfolio Manager – Investor Solutions Group at <br> Quantix. Her experience in the commodity markets spans across <br> trading, portfolio management, and risk management in the physical <br> markets. After starting her career as a trader at Goldman Sachs in <br> New York, Ms. Kavchak was a Portfolio Manager at Gresham <br> Investment Management for 8 years, where she managed long-only <br> / long-biased portfolios within Gresham's actively managed commodity <br> fund. Ms. Kavchak also spent over 3 years at Archer Daniels Midland <br> as a senior trader, risk manager, and investor for their global <br> commodities businesses. She began her investment career in 2010.<br>|
| **Michael Steele** | Mr. Steele is a Portfolio Manager – Investor Solutions Group at <br> Quantix. He joined Quantix in December 2018 as an Associate Trader <br> and Quantitative Analyst. In addition to analyzing markets and <br> executing trades across all major commodity markets, he has designed <br> and implemented proprietary infrastructure used for risk analytics, <br> portfolio construction, trade idea generation, and operational <br> workflows. Prior to Quantix, he covered U.S. Natural Gas and LNG <br> as a research associate at Bloomberg New Energy Finance (BNEF) <br> and was an advanced specialist in commodities and equity derivatives <br> for Bloomberg LP. He holds a BA in Economics from the University <br> of Pennsylvania.<br>|

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*Investors Should Retain This Supplement For Future Reference*

S0626.P.ETF

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