# EDGAR Filing Document

**Accession Number:** 0001860434
**File Stem:** 0001193125-26-158185
**Filing Date:** 2026-4
**Character Count:** 27252
**Document Hash:** 539dc41b13d3e58745693419470d1dd5
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-158185.hdr.sgml**: 20260416

**ACCESSION NUMBER**: 0001193125-26-158185

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 6

**FILED AS OF DATE**: 20260416

**DATE AS OF CHANGE**: 20260416

**EFFECTIVENESS DATE**: 20260416

**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:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-255884
- **FILM NUMBER:** 26866040

**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 Small Cap Growth ETF (Series ID: S000098463)

| Class ID   | Class Name                         | Ticker Symbol   |
|:---|:---|:---|
| C000268141 | Harbor Active Small Cap Growth ETF | SGRW            |

Harbor Active Small Cap Growth ETF

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**SGRW**<br>

**Summary Prospectus – March 1, 2026 (as amended April 16, 2026)**

Before you invest, you may want to review the Fund's prospectus, which contains more information about the Fund and its risks. You can find the Fund's prospectus and other information about the Fund online at *harborcapital.com/prospectus*. You can also get this information at no cost by calling 800-422-1050 or by sending an email request to funddocuments@harborcapital.com. If you purchase shares of the Fund through a financial intermediary, the prospectus and other information will also be available from your financial intermediary. The current prospectus and statement of additional information, dated March 1, 2026, as amended or supplemented from time to time, are incorporated by referenced into this summary prospectus and may be obtained, free of charge, at the website, phone number or email address noted above.

**Investment Objective**

The Fund seeks long-term growth of capital.

**Fees and Expenses of the Fund**

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. **You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.**

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**Annual Fund Operating Expenses** (expenses that you pay each year as a percentage of the value of your investment)

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| | |
|:---|:---|
|  | **Rate** |
| Management Fees | 0.80% |
| Distribution and Service (12b-1) Fees |  |
| Other Expenses<sup>1</sup><sup>,</sup><sup>2</sup> | 0.00% |
| Total Annual Fund Operating Expenses | 0.80% |

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<sup>1</sup> *Pursuant to the Investment Advisory Agreement, the Advisor pays all of the operating expenses of the Fund, except for (i) the fee payment under the Investment Advisory Agreement; (ii) payments under the Fund's 12b-1 plan (if any); (iii) the costs of borrowing, including interest and dividend expenses; (iv) taxes and governmental fees; (v) acquired fund fees and expenses; (vi) brokers' commissions and any other transaction-related expenses and fees arising out of transactions effected on behalf of the Fund; (vii) costs of holding shareholder meetings; and (viii) litigation and indemnification expenses and other extraordinary expenses not incurred in the ordinary course of the Fund's business.*

<sup>2</sup> *Estimated for the current fiscal year.*

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**Expense Example**

This Expense Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other exchange-traded funds. The Expense Example assumes that you invest $10,000 in the Fund for the time periods indicated. The Expense Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, under these assumptions, your costs would be:

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| | | |
|:---|:---|:---|
|  | **One**<br> **Year**<br>| &nbsp;&nbsp; **Three**<br> **Years**<br>|
| ETF | $82 | $255 |

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**Portfolio Turnover**

The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs and may result in higher taxes when shares of the Fund are held in a taxable account. These costs, which are not reflected in the Annual Fund Operating Expenses or in the Expense Example, do affect the Fund's performance. The Fund commenced operations on

January 14, 2026. Accordingly, there is no portfolio turnover rate for the fiscal year ended October 31, 2025.

**Principal Investment Strategy**

The Fund invests primarily in equity securities of U.S. small capitalization growth companies. Under normal circumstances, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in equity securities of small cap companies that Granahan Investment Management LLC, the Fund's subadviser ("Granahan" or the "Subadvisor"), considers "growth" stocks. Equity securities include, but are not limited to, common stock, preferred stock, other investment companies (including other exchange-traded funds ("ETFs")), and American Depositary Receipts ("ADRs").

The Fund defines small cap companies as those that, at the time of purchase, have market capitalizations that qualified them for inclusion in the Russell 2000<sup>®</sup> Growth Index (the "Index") during the trailing 36 months. As of January 31, 2026, the largest company in the Index had a market capitalization of $38.2 billion, but is expected to change frequently. The Fund may continue to hold securities that no longer meet this small cap definition following the time of purchase. The Fund considers growth companies to be those that, in the judgement of the Subadvisor, have the potential to achieve above-average increases in revenues and earnings over a multi-year period.

Using a disciplined, fundamental, bottom-up approach to research, the Subadvisor invests in companies it believes are well managed, rapidly growing and undercovered and/or out of favor with the investment community. The Subadvisor generally expects such companies to demonstrate the capacity to grow revenues and earnings at rates of approximately 15% or more in the next three years. These expectations are based on the Subadvisor's internal analysis and may not be consistent with consensus estimates or other third-party projections. The Subadvisor utilizes a team approach to portfolio management where each portfolio manager manages a portion of the Fund's portfolio. The Fund will typically hold approximately 120 to 160 companies in its portfolio.

As part of its active management investment process, the Subadvisor places every company in the Fund's portfolio into one of three proprietary investment categories: Core Growth, Pioneers and Special Situations (the "LifeCycle categories"). These LifeCycle categories each have different drivers to provide diversification and help mitigate risk in the Fund's portfolio.

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Core Growth companies generally are quality companies that the Subadvisor believes have a solid record of growth, recurring revenues and good visibility on earnings.

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Pioneers are innovators and companies that the Subadvisor believes have unique, disruptive potential (i.e., the potential for creating new markets or disrupting established industries).

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Special Situations are companies that may not currently exhibit financial results consistent with the growth characteristics described above, but which the Subadvisor believes possess identifiable catalysts—such as new management or a new

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**Summary Prospectus**

**Harbor Active Small Cap Growth ETF**

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market for a product—that could result in future revenue and earnings growth consistent with the Fund's investment objectives.

The common theme across the LifeCycle categories is high and/or accelerating earnings growth and demonstrating competitive advantages such as strong brand recognition, significant market share within its industry, proprietary technology or intellectual property, or other barriers to entry that position the company as a leader in the company's market. The Subadvisor diversifies the Fund's portfolio across the three LifeCycle categories to reflect its belief that growth stocks outperform over time, and seeks to ensure that it both capitalizes on dynamic emerging growth stocks and provides stability in the Fund's portfolio through investing in undervalued stocks that it believes have bright earnings growth prospects.

The Subadvisor's research into portfolio companies includes, but is not limited to, personal interviews with management and onsite visits to companies. Portfolio securities are assessed using criteria such as valuation, liquidity, purchases of shares by insiders, and conviction on the fundamentals to determine the most attractive names for the Fund's portfolio.

The Fund primarily invests its assets in issuers located in the U.S. However, the Fund may also invest in non-U.S. companies that are listed and traded on U.S. exchanges. In addition to the investment considerations outlined above, the Subadvisor also evaluates issuers with respect to environmental, social and governance ("ESG") factors and integrates consideration of these factors into its investment process. The Subadvisor may also engage with companies on ESG-related matters. The relevance and weight of specific ESG considerations may vary by issuer and depending on the industry, sector, geographic region or other factors and the nature of the issuer's core business. ESG criteria represent only one of several factors considered in making investment decisions. Accordingly, ESG factors may not be assessed for every investment, and the Fund may invest in companies with lower ESG ratings when other investment considerations are deemed favorable.

The Fund may at times engage in active and frequent trading to achieve its principal investment strategies.

**Principal Risks**

There is no guarantee that the investment objective of the Fund will be achieved. Stocks fluctuate in price and the value of your investment in the Fund may go down. This means that you could lose money on your investment in the Fund or the Fund may not perform as well as other investment options. Principal risks impacting the Fund (in alphabetical order after the first five risks) include:

**Small Cap Risk:** The Fund's performance may be more volatile because it invests primarily in issuers that are smaller companies. Smaller companies may have limited product lines, markets and financial resources. Securities of smaller companies are usually less stable in price and less liquid than those of larger, more established companies. Additionally, small cap stocks may fall out of favor relative to mid or large cap stocks, which may cause the Fund to underperform other equity funds that focus on mid or large cap stocks.

**Growth Style Risk:** Over time, a growth oriented investing style may go in and out of favor, which may cause the Fund to underperform other equity funds that use different investing styles.

**Equity Risk:** The values of equity or equity-related securities may decline due to general market conditions that are not specifically

related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates or adverse investor sentiment generally. They may also decline due to factors that affect a particular industry or industries, such as labor shortages or increased production costs and competitive conditions within an industry. Equity securities generally have greater price volatility than fixed income securities.

**Market Risk:** Securities markets are volatile and can decline significantly in response to adverse market, economic, political, regulatory or other developments, which may lower the value of securities held by the Fund, sometimes rapidly or unpredictably. Events such as war, military conflict, geopolitical disputes, acts of terrorism, social or political unrest, natural disasters, recessions, inflation, rapid interest rate changes, supply chain disruptions, tariffs and other restrictions on trade, sanctions, the spread of infectious illness or other public health threats, or the threat or potential of one or more such events and developments, could also significantly impact the Fund and its investments.

**Risks Associated with Exchange-Traded Funds:** As an ETF, the Fund is subject to the following risks:

<u>Authorized Participant Concentration/Trading Risk</u>: Only authorized participants ("APs") may engage in creation or redemption transactions directly with the Fund. The Fund has a limited number of institutions that may act as APs and such APs have no obligation to submit creation or redemption orders. Consequently, there is no assurance that APs will establish or maintain an active trading market for the shares. This risk may be heightened to the extent that securities held by the Fund are traded outside a collateralized settlement system. In that case, APs may be required to post collateral on certain trades on an agency basis (i.e., on behalf of other market participants), which only a limited number of APs may be able to do. In addition, to the extent that APs exit the business or are unable to proceed with creation and/or redemption orders with respect to the Fund and no other AP is able to step forward to create or redeem Creation Units (as defined below), this may result in a significantly diminished trading market for shares, and shares may be more likely to trade at a premium or discount to the Fund's net asset value and to face trading halts and/or delisting. This risk may be heightened during periods of volatility or market disruptions.

<u>Cash Transactions Risk</u>: The Fund may effect some or all of its creations and redemptions for cash rather than in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in an ETF that effects all of its creations and redemptions in-kind. Because the Fund may effect redemptions for cash, it may be required to sell portfolio securities in order to obtain the cash needed to distribute redemption proceeds. A sale of portfolio securities may result in capital gains or losses and may also result in higher brokerage costs. To the extent costs are not offset by transaction fees charged by the Fund to APs, the costs of cash transactions will be borne by the Fund.

<u>Premium/Discount Risk</u>: The market price of the Fund's shares will generally fluctuate in accordance with changes in the Fund's net asset value as well as the relative supply of and demand for shares on the Exchange. The Advisor cannot predict whether shares will trade below, at or above their net asset value because the shares trade on the Exchange at market prices and not at net asset value. Price differences may be due, in large part, to the fact that supply and demand forces at work in the secondary trading market for shares will be closely related, but not identical, to the same forces influencing the prices of the holdings of the Fund trading individually or in the aggregate at any point in time. This may result in the Fund's shares trading significantly above (premium)

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**Summary Prospectus**

**Harbor Active Small Cap Growth ETF**

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or below (discount) the Fund's net asset value, which will be reflected in the intraday bid/ask spreads and/or the closing price of shares as compared to net asset value. However, given that shares can only be purchased and redeemed in Creation Units to and from broker-dealers and large institutional investors that have entered into participation agreements (unlike shares of closed-end funds, which frequently trade at appreciable discounts from, and sometimes at premiums to, their net asset value), the Advisor believes that large discounts or premiums to the net asset value of shares should not be sustained. During stressed market conditions, the market for the Fund's shares may become less liquid in response to deteriorating liquidity in the market for the Fund's underlying portfolio holdings, which could in turn lead to differences between the market price of the Fund's shares and their net asset value.

**Depositary Receipts Risk:** American depositary receipts (or ADRs) are certificates evidencing ownership of shares of a foreign issuer. These certificates are issued by depository banks and generally trade on an established market in the U.S. The underlying shares are held in trust by a custodian bank or similar financial institution. The depository bank may not have physical custody of the underlying securities at all times and may charge fees for various services, including forwarding dividends and interest and corporate actions. American depositary receipts are alternatives to directly purchasing the underlying foreign securities in their national markets and currencies. American depositary receipts are subject to the risks associated with investing directly in foreign securities.

**ESG Factors Risk:** The consideration of ESG factors by the Subadvisor could cause the Fund to perform differently than other funds. ESG factors are not the only consideration used by the Subadvisor in making investment decisions for the Fund and the Fund may invest in a company that scores poorly on ESG factors if it scores well on other criteria. ESG factors may not be considered for every investment decision.

**Foreign Securities Risk:** Because the Fund may invest in securities of foreign issuers, an investment in the Fund is subject to special risks in addition to those of U.S. securities. These risks include heightened political and economic risks, greater volatility, currency fluctuations, higher transaction costs, delayed settlement, possible foreign controls on investment, possible sanctions by governmental bodies of other countries and less stringent investor protection and disclosure standards of foreign markets. Foreign securities are sometimes less liquid and harder to value than securities of U.S. issuers.

**High Portfolio Turnover Risk:** Higher portfolio turnover may adversely affect Fund performance by increasing Fund transaction costs and may lead to the realization and distribution to shareholders of higher capital gains, which may increase a shareholder's tax liability.

**Investment in Other Investment Companies Risk:** Investments in other investment companies (including money market funds and ETFs) are subject to market and selection risk. In addition, if the Fund acquires shares of investment companies, shareholders bear both their proportionate share of expenses in the Fund and, indirectly, the expenses of the investment companies.

**Issuer Risk:** An adverse event affecting a particular issuer in which the Fund is invested, such as an unfavorable earnings report, may depress the value of that issuer's securities, sometimes rapidly or unpredictably.

**Large Shareholder Risk:** Certain large shareholders including authorized participants ("AP"), third-party investors, the Advisor, the Subadvisor, affiliates of the Advisor or the Subadvisor, market makers, or other entities, including funds or accounts over which the Advisor or the Subadvisor, an affiliate of the Advisor or the

Subadvisor or a third-party intermediary has investment discretion, such as those investing through one or more model portfolios, may from time to time own or control a substantial amount of the Fund's shares. There is no requirement that these shareholders maintain their investment in the Fund. There is a risk that such large shareholders or that the Fund's shareholders generally may redeem all or a substantial portion of their investments in the Fund in a short period of time, including as a result of an asset allocation decision made by the Advisor, the Subadvisor, an affiliate of the Advisor or Subadvisor or a third-party intermediary, which could have a significant negative impact on the Fund's NAV, liquidity, and brokerage costs. Large redemptions could also result in tax consequences to shareholders and impact the Fund's ability to implement its investment strategy. In addition, transactions by large shareholders may account for a large percentage of the trading volume on the listing exchange and may, therefore, have a material upward or downward effect on the market price of the shares.

**New Fund Risk:** There can be no assurance that the Fund will grow to or maintain an economically viable size, in which case the Board of Trustees may determine to liquidate the Fund. The Board of Trustees may liquidate the Fund at any time in accordance with the Declaration of Trust and governing law. As a result, the timing of the Fund's liquidation may not be favorable.

**Preferred Stock Risk:** Preferred stocks in which the Fund may invest are sensitive to interest rate changes, and are also subject to equity risk, which is the risk that stock prices will fall over short or extended periods of time. The rights of preferred stocks on the distribution of a company's assets in the event of a liquidation are generally subordinate to the rights associated with a company's debt securities.

**Selection Risk:** The Subadvisor's judgment about the attractiveness, value and growth potential of a particular security may be incorrect, which may cause the Fund to underperform. Additionally, the Subadvisor potentially will be prevented from executing investment decisions at an advantageous time or price as a result of domestic or global market disruptions, particularly disruptions causing heightened market volatility and reduced market liquidity, as well as increased or changing regulations. Thus, investments that the Subadvisor believes represent an attractive opportunity or in which the Fund seeks to obtain exposure may be unavailable entirely or in the specific quantities or prices sought by the Subadvisor and the Fund may need to forgo the investment at the time.

**Performance**

Because the Fund is newly organized, the Fund has no reportable performance history. Once the Fund has operated for at least one calendar year, a bar chart and performance table will be included in the prospectus to show the performance of the Fund. When such information is included, this section will provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance history from year to year and showing how the Fund's average annual total returns compare with those of a broad measure of market performance and an additional index. Please note that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. To obtain performance information, please visit the Fund's website at harborcapital.com or call 800-422-1050.

**Portfolio Management**

**Investment Advisor**

Harbor Capital Advisors, Inc.

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**Summary Prospectus**

**Harbor Active Small Cap Growth ETF**

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**Subadvisor**

Granahan Investment Management LLC ("Granahan") has subadvised the Fund since 2026.

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**Portfolio Manager**

The portfolio managers are jointly and primarily responsible for the day-to-day investment decision making for the Fund.

**Andrew L. Beja, CFA.** Mr. Beja is Senior Vice President and Managing Director at Granahan and has served as a portfolio manager for the Fund since 2026.

**Jeffrey A. Harrison, CFA.** Mr. Harrison is Senior Vice President and Managing Director at Granahan and has served as a portfolio manager for the Fund since 2026.

**David M. Rose, CFA.** Mr. Rose is Senior Vice President, Chief Investment Officer and Managing Director at Granahan and has served as a portfolio manager for the Fund since 2026.

**Richard Watson, CFA.** Mr. Watson is Senior Vice President at Granahan and has served as a portfolio manager for the Fund since 2026.

**Kelvin Jiang, CFA.** Mr. Jiang is Vice President at Granahan and has served as a portfolio manager for the Fund since 2026.

**Buying and Selling Fund Shares**

Individual Fund shares may only be bought and sold in the secondary market through a broker or dealer at a market price. Shares of the Fund are listed and traded on an exchange at market price throughout the day rather than at NAV and may trade at a price greater than the Fund's NAV (premium) or less than the Fund's NAV (discount). An investor may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase shares (bid) and the lowest price a seller is willing to accept for shares (ask) when buying or selling Fund shares in the secondary market (the "bid-ask spread"). Recent information, including information regarding the Fund's NAV, market price, premiums and discounts, and bid-ask spread, is available at *harborcapital.com*.

**Tax Information**

Distributions you receive from the Fund are subject to federal income tax and may also be subject to state and local taxes. These distributions will generally be taxed as ordinary income or capital gains, unless you are investing through a tax-deferred retirement account, such as a 401(k) plan or individual retirement account. Investments in tax-deferred accounts may be subject to tax when they are withdrawn.

**Payments to Broker-Dealers and Other Financial Intermediaries**

The Advisor and/or its related companies have in the past and could in the future pay intermediaries, which may include banks, broker-dealers, or financial professionals, for marketing activities and presentations, educational training programs, conferences, the development of technology platforms and reporting systems and data or other services related to the sale of Fund shares and related services. These payments create a conflict of interest by influencing the broker-dealer or other intermediary and your sales representative to recommend the Fund over another investment. Ask your sales representative or visit your financial intermediary's website for more information.

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**Summary Prospectus**

**HARBOR ACTIVE SMALL CAP GROWTH ETF**

**March 1, 2026 (as amended April 16, 2026)** 

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| | |
|:---|:---|
| **Exchange** | **Ticker** |
| NYSE Arca, Inc. | SGRW |

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ETF.SP.SGRW.0426

111 South Wacker Drive, 34th Floor

Chicago, IL 60606-4302

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