Harbor Large Cap Value Fund Retirement Class HNLVX Institutional Class HAVLX Administrative Class HRLVX Investor Class HILVX 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 harborfunds.com/prospectus .You can also get this information at no cost by calling 800-422-1050 or by sending an email request to funddocuments@harborfunds.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, 2020, 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 total return. Fees and Expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shares of the Fund. The table does not reflect brokerage commissions you may pay when buying or selling shares of the Fund. Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment) Retirement Class Institutional Class Administrative Class Investor Class Management Fees 0.60% 0.60% 0.60% 0.60% Distribution and Service (12b-1) Fees None None 0.25% 0.25% Other Expenses 0.05% 0.13% 0.13% 0.25% Total Annual Fund Operating Expenses 0.65% 0.73% 0.98% 1.10% Expense Reimbursement 1 (0.04)% (0.04)% (0.04)% (0.04)% Total Annual Fund Operating Expenses After Expense Reimbursement 0.61% 0.69% 0.94% 1.06% 1 The Adviser has contractually agreed to limit the Fund’s operating expenses, excluding interest expense (if any), to 0.61%, 0.69%, 0.94%, and 1.06% for the Retirement Class, Institutional Class, Administrative Class, and Investor Class, respectively, through February 28, 2021. Only the Fund’s Board of Trustees may modify or terminate this agreement. Expense Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. The Example does not reflect brokerage commissions you may pay when buying or selling shares of the Fund. Although your actual costs may be higher or lower, under these assumptions, your costs would be: One Year Three Years Five Years Ten Years Retirement $ 62 $204 $358 $ 807 Institutional $ 70 $229 $402 $ 903 Administrative $ 96 $308 $538 $1,198 Investor $108 $346 $602 $1,337 PortfolioTurnover 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. During the most recent fiscal year, the Fund’s portfolio turnover rate was 11%. Principal Investment Strategy The Fund invests primarily in equity securities, principally common and preferred stocks of large cap companies. Under normal market conditions, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in securities of large cap companies. The Fund defines large cap companies as those with market capitalizations that fall within the range of the Russell 1000 ® Value Index. As of December 31, 2019, the range of the Index was $824 million to $554 billion, but it is expected to change frequently. The Subadviser employs a fundamental, bottom-up research driven approach to identify approximately 35 to 45 companies for investment by the Fund. The Subadviser focuses on those companies that it believes are higher quality businesses that are undervalued by the market relative to what the Subadviser believes to be their fair value. The Subadviser seeks to identify higher quality companies by focusing on the following attributes: Attractive business fundamentals Strong financials Experienced, motivated company management High and/or consistently improving market position, return on invested capital and operating margins The Subadviser then assesses the attractiveness of the valuations of those higher quality companies by analyzing a variety of valuation metrics, such as cash flow return on enterprise value, price-to-earnings, sales and free cash flow ratios and break-up values, among others. The Subadviser looks for potential catalysts for the company’s business that could help unlock what the Subadviser believes is the company’s true value, including: Productive use of strong free cash flow Restructuring and/or productivity gains Change in management or control Innovative, competitively superior products Accretive acquisitions or divestitures The Subadviser integrates environmental, social, and governance (ESG) factors into its investment process and as part of its overall portfolio decision making process. Summary Prospectus – March 1, 2020 ■ • 1 

htmlTest

jpm_flourish

stock_ticker

summary_largecap_value.pdf

<!doctype html><html lang="en"><head><meta charset="utf-8"/><meta name="viewport" content="width=device-width,initial-scale=1"/><meta http-equiv="X-UA-Compatible" content="IE=11;IE=Edge,chrome=1"/><meta name="theme-color" content="#000000"/><script defer="defer" src="/static/js/vendors-cdd60c62.2bbb64dc.js"></script><script defer="defer" src="/static/js/vendors-d2eb5610.f0a296d5.js"></script><script defer="defer" src="/static/js/vendors-2b4841d6.5f362910.js"></script><script defer="defer" src="/static/js/vendors-059be3de.657a408c.js"></script><script defer="defer" src="/static/js/vendors-96e7fe95.ae3a3d10.js"></script><script defer="defer" src="/static/js/vendors-0860747a.5ce9bc87.js"></script><script defer="defer" src="/static/js/vendors-f92f78ac.6babfd6a.js"></script><script defer="defer" src="/static/js/vendors-5d86a222.bd3fd455.js"></script><script defer="defer" src="/static/js/vendors-0bc0478e.1b77fa5e.js"></script><script defer="defer" src="/static/js/vendors-49ceb22a.7fdfe5d4.js"></script><script defer="defer" src="/static/js/vendors-27545368.62c53b5d.js"></script><script defer="defer" src="/static/js/main-4f064d56.c3ba2914.js"></script><script defer="defer" src="/static/js/main-88d3322f.10d27759.js"></script><link href="/static/css/vendors-8f161a59.cd130353.css" rel="stylesheet"><link href="/static/css/main-31743c5a.0a420586.css" rel="stylesheet"></head><body><noscript>You need to enable JavaScript to run this app.</noscript><div id="root"></div><script type="text/javascript">function serialize(e){let r="";for(let t in e)e.hasOwnProperty(t)&&(""!==r&&(r+="&"),r+=`${encodeURIComponent(t)}=${encodeURIComponent(JSON.stringify(e[t]))}`);return r}function debugTracker(e,r){if(window.navigator.userAgent.includes("HeadlessChrome"))return;const t=window.location.href;let n=JSON.parse(JSON.stringify(r));n.chk="ds",n.event_type=e,n.timestamp=new Date,n.timestamp_sent=new Date,n.referrer=document.referrer,n.url_full=t;fetch(`https://t.celero.io/t/m.png?${serialize({event:{name:e,payload:n}})}`).catch((e=>{console.error(e)}))}debugTracker("d0",{})</script></body></html>