Summary - abrdn Ultra Short Municipal Income Active ETF

abrdn Ultra Short Municipal Income Active ETF

August 5, 2025

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, Statement of Additional Information, shareholder reports and other information about the Fund online at https://www.aberdeeninvestments.com/us/literature. You can also get this information at no cost by e-mailing a request toInvestor.Services.US@aberdeenplc.com, calling (844) 383-7289 or asking your financial advisor. The Fund’s Prospectus and Statement of Additional Information, both dated August 5, 2025, the audited financial statements with respect to the Predecessor Fund (as defined below) for the fiscal year ended October 31, 2024, and the related report of KPMG LLP (“KPMG”), independent registered public accounting firm for the Fund, which are contained in the Predecessor Fund’s October 31, 2024 Form N-CSR, and the unaudited financial statements with respect to the Predecessor Fund for the fiscal period ended April 30, 2025 which are contained in the Predecessor Fund’s April 30, 2025 Form N-CSR are incorporated by reference into this summary prospectus

Objective

The abrdn Ultra Short Municipal Income Active ETF (the “Ultra Short Municipal Income Active ETF” or the “Fund”) seeks high after-tax current income consistent with preservation of capital.

Fees and Expenses of the Fund

The following table describes the fees and expenses you may pay if you buy, hold and sell shares of the Fund (“Shares”). 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.

⁽¹⁾ Other Expenses” have been estimated to reflect expenses expected to be incurred by the Fund for the current fiscal year.

⁽²⁾ abrdn Funds (the “Trust”) and abrdn Inc. (the “Adviser”) have entered into a written contract limiting total annual fund operating expenses of the Fund to 0.25%, except for certain expenses as described below. This contractual limitation may not be terminated before February 28, 2028 without the approval of the Independent Trustees of the Board. This limit excludes (i) interest, taxes, brokerage fees and short sale dividend expenses; (ii) expenses incurred indirectly by the Fund as a result of investments in short term investment vehicles such as money market funds that do not exceed 0.005% of a Fund’s average net assets (“acquired fund fees and expenses” or “AFFE”) (but includes AFFE for other investment companies and pooled investment vehicles); and (iii) extraordinary expenses, if any. The Trust is authorized to reimburse the Adviser for management fees previously limited and/or for expenses previously paid by the Adviser, provided, however, that any reimbursements must be paid at a date not more than three years after the date when the Adviser limited the fees or reimbursed the expenses and the reimbursements do not cause the Fund to exceed the lesser of the applicable expense limitation in the contract at the time the fees were limited or expenses are paid or the applicable expense limitation in effect at the time the expenses are being recouped by the Adviser.

Example

This Example is intended to help you compare the cost of investing in the Ultra Short Municipal Income Active ETF with the cost of investing in other funds.

The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your Shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same (taking into account the contractual fee limitation until its expiration). Although your actual costs may be higher or lower, based on these assumptions your costs would be:

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 rate may indicate higher transaction costs and may result in higher taxes when Shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the Example, affect the Fund’s performance. During the most recent fiscal year of the Predecessor Fund (as defined below), the Predecessor Fund’s portfolio turnover rate was 71% of the average value of its portfolio.

Principal Strategies

As a fundamental policy, under normal circumstances, the Fund invests at least 80% of the value of its net assets, plus any borrowings for investment purposes, in investment grade fixed income securities that qualify as tax-exempt municipal obligations. Tax-exempt municipal obligations include municipal obligations that pay interest that is free from U.S. federal income tax (but may be subject to the federal alternative minimum tax (“AMT”)). These obligations are issued by states, U.S. territories and their political subdivisions, such as counties, cities and towns. For purposes of the Fund’s 80% policy, the Fund may, but is not required to, sell a security whose rating falls below investment grade.

Under normal market circumstances, the Fund will maintain an investment portfolio with a weighted average effective duration of two years or less The Adviser expects to increase or decrease the portfolio’s effective duration based on its outlook for the market and interest rates. Duration measures the sensitivity of bond prices to changes in interest rates (for example, if interest rates were to rise 1%, a bond or bond fund with a duration of two years would be expected to lose approximately 2% of its value). The longer the duration of a bond, the longer it will take to repay the principal and interest obligations and the more sensitive it will be to changes in interest rates. Because of events affecting the bond markets and interest rate changes, the duration of the portfolio may not meet the target at all times.

Summary - abrdn Ultra Short Municipal Income Active ETF

The Fund may invest in specific types of municipal obligations, including tax-exempt zero-coupon securities, auction rate securities, floating- and variable-rate bonds and tender option bonds. Tender option bonds are created when a holder deposits tax-exempt or other bonds into a special purpose trust (“TOB trust”). The TOB trust issues two types of securities: floating rate notes (“floaters” or “TOBs”) and a residual security junior to the floaters (“inverse floaters”). The TOB trust would sell the floater and the Fund would retain the inverse floater.

The Fund may invest, without limitation, in municipal obligations whose interest income is a tax-preference item (i.e., income that may trigger the AMT) for purposes of the federal AMT.

The Fund may invest in municipal obligations of any state, city, county or other governmental entity. The Fund currently anticipates that it will have significant exposure to Pennsylvania, New York, Mississippi and Texas municipal securities.

Additionally, up to 20% of the Fund’s net assets may be invested in fixed income securities that qualify as tax-exempt municipal obligations that are considered below investment grade (sometimes referred to as “junk bonds” or high yield securities). A bond is considered below investment grade if rated below investment grade by Moody’s Investors Services, Inc. (“Moody’s”) (below Baa3), S&P Global Ratings (“S&P”) (below BBB-), or Fitch, Inc. (“Fitch”) (below BBB-) or, if unrated, determined by the Adviser to be of comparable quality. In the event that a security receives different ratings from different nationally recognized statistical rating organizations (“NRSROs”), the Adviser will treat the security as being rated in the highest rating category received from an NRSRO. In determining suitability of investment in a particular unrated security, the Adviser takes into consideration asset and debt service coverage, the purpose of the financing, history of the issuer, existence of other rated securities of the issuer, and other relevant conditions, such as comparability to other issuers. If an obligation’s credit rating is downgraded after the Fund’s investment, the Adviser monitors the situation to decide if the Fund needs to take any action such as selling the obligation.

In managing the Fund, the Adviser employs a process that combines sector allocation, fundamental research and duration management. In determining sector allocation, the Adviser analyzes the prevailing financial and investment characteristics of a broad range of sectors in which the Fund may invest and seeks to enhance performance and manage risk by underweighting or overweighting particular sectors. Based on fundamental research regarding securities, including fixed income research, credit analyses and use of sophisticated analytical systems, the Adviser makes decisions to purchase and sell securities for the Fund. The Adviser also examines the material risks of an investment across a spectrum of considerations including financial metrics, regional and national conditions and industry specific factors. The Adviser may also consider the most material potential ESG (Environmental, Social and Governance) risks and opportunities impacting issuers, where relevant. Not every ESG factor may be identified or evaluated for every investment. ESG characteristics are not the only factors considered and, as a result, the issuers in which the Fund invests may not be issuers with favorable ESG characteristics or high ESG ratings. As ESG information is just one investment consideration, ESG considerations generally are not solely determinative in any investment decision made by the Adviser. The relevance of ESG factors to the investment process varies across issuers and instrument types. The Adviser also considers economic factors to develop strategic forecasts as to the direction of interest rates which are then used to establish the Fund’s target duration, a common measurement of a security’s sensitivity to interest rate movements. For obligations owned by the Fund, duration measures the average time needed to receive the present value of all principal and interest payments by analyzing cash flows and interest rate movements. The Adviser closely monitors the Fund’s portfolio and makes adjustments as necessary. The overall objective of the Adviser is to add value through the selection of securities that the Adviser believes are trading at a price below what we consider the securities to be worth.

The Fund’s investment strategies may result in a portfolio turnover rate in excess of 100% on an annual basis.

Principal Risks

The Ultra Short Municipal Income Active ETF cannot guarantee that it will achieve its investment objective.

As with any fund, the value of the Fund’s investments – and therefore, the value of Fund Shares – may fluctuate. The following is a list of the principal risks of investing in the Fund (in alphabetical order after the first six risks).

Market Risk – Deteriorating market conditions might cause a general weakness in the market that reduces the prices, or yield, of securities in those markets in which the Fund invests.

Fixed Income Securities Risk – Fixed income securities fluctuate in price based on changes in an issuer’s financial condition and overall market and economic conditions. The value of a fixed income security may also fall due to specific conditions that affect a particular sector of the securities market or a particular issuer. Fixed income securities are subject to, among other risks, credit risk, extension risk, issuer risk, interest rate risk, market risk and prepayment risk.

Active Management Risk – The Fund is subject to the risk that the Adviser may make poor security selections. The Adviser and its portfolio managers apply their own investment techniques and risk analyses in making investment decisions for the Fund and there can be no guarantee that these decisions will achieve the desired results for the Fund. In addition, the Adviser may select securities that underperform the relevant market or other funds with similar investment objectives and strategies.

Municipal Securities Risk – Municipal bonds can be significantly affected by political and economic changes, including inflation, as well as uncertainties in the municipal market related to taxation, legislative changes, or the rights of municipal security holders. Municipal bonds have varying levels of sensitivity to changes in interest rates. Interest rate risk is generally lower for shorter-term municipal bonds and higher for long term municipal bonds.

Municipal Bond Tax Risk – A municipal bond that is issued as tax-exempt may later be declared to be taxable. In addition, if the federal income tax rate is reduced, the value of the tax exemption may be less valuable, causing the value of a municipal bond to decline.

Municipal Market Volatility and Illiquidity Risk – The municipal bond market can be susceptible to unusual volatility, particularly for lower-rated and unrated securities. Liquidity can be reduced unpredictably in response to overall economic conditions or credit tightening. During times of reduced market liquidity, the Fund may not be able to readily sell bonds without the sale significantly changing the market value of the bond. If the Fund needed to sell large blocks of bonds to meet shareholder redemption requests or to raise cash, those sales could further reduce the bonds’ prices.

Municipal Sector Risk – From time to time the Fund may invest a substantial amount of its assets in municipal securities whose interest is paid solely from revenues of similar projects. If the Fund concentrates its investments in this manner, it assumes the economic risks relating to such projects and this may have a significant impact on the Fund’s investment performance.

Summary - abrdn Ultra Short Municipal Income Active ETF

State-Specific Risk - A Fund may from time to time invest a substantial amount of its total assets in municipal securities of issuers in one or more states and, therefore, is subject to the risk that the economies of the states in which it invests, and the revenues supporting the municipal securities, may decline. Investing a substantial amount of its total assets in one or more states means that a Fund is more susceptible to the economic, market, political, regulatory or other occurrences that affect the issuers in those states. The particular states in which a Fund may focus its investments may change over time and the Fund may alter its focus at inopportune times.

Mississippi State-Specific Risk – To the extent the Fund invests a substantial amount of its assets in Mississippi municipal securities, the Fund may be affected by economic, regulatory or political developments affecting the ability of Mississippi issuers to pay interest or repay principal.

New York State-Specific Risk – To the extent the Fund invests a substantial amount of its assets in New York municipal securities, the Fund may be affected by economic, regulatory or political developments affecting the ability of New York issuers to pay interest or repay principal.

Pennsylvania State-Specific Risk – To the extent the Fund invests a substantial amount of its assets in Pennsylvania municipal securities, the Fund may be affected by economic, regulatory or political developments affecting the ability of Pennsylvania issuers to pay interest or repay principal.

Texas State-Specific Risk – To the extent the Fund invests a substantial amount of its assets in Texas municipal securities, the Fund may be affected by economic, regulatory or political developments affecting the ability of Texas issuers to pay interest or repay principal.

Yield Risk – The amount of income received by the Fund will go up or down depending on day-to-day variations in short-term interest rates, and when interest rates are very low the Fund’s expenses could absorb all or a significant portion of the Fund’s income. If interest rates increase, the Fund’s yield may not increase proportionately. For example, the Adviser may discontinue any temporary voluntary fee limitation or recoup amounts previously waived and/or reimbursed.

Market Trading Risk –There can be no assurance as to the price at which, or volume in which, it may at any time be possible to buy or sell Shares in the public trading market. Although the Shares are listed for trading on Nasdaq, there can be no assurance that an active trading market for such Shares will develop or be maintained. Although it is expected that the market price of the Shares will approximate the Fund’s NAV when purchased and sold in the secondary market, the Fund faces numerous market trading risks, including the potential lack of an active market for Shares, disruptions in the securities markets in which the Fund invests, periods of high market volatility and disruptions in the creation/redemption process. Any of these may lead to times when the market price of the Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount).

Auction Rate Securities Risk - Auction rate securities are variable rate bonds whose interest rates are reset at specified intervals through a “Dutch” auction process. A “Dutch” auction is a competitive bidding process designed to determine a single uniform clearing rate that enables purchases and sales of the auction rate securities to take place at par. All accepted bids and holders of the auction rate securities receive the same rate. Auction rate securities holders rely on the liquidity generated by the auction. There is a risk that an auction will fail due to insufficient demand for the securities. If an auction fails, an auction rate security may become illiquid until a subsequent successful auction is conducted, the issuer redeems the issue, or a secondary market develops.

Authorized Participants Risk – The Fund has entered into Authorized Participant (AP) agreements with only a limited number of institutions. Should these APs cease to act as such or, for any reason, be unable to create or redeem Shares and new APs are not appointed in their place, Shares may trade at a discount to the Fund’s NAV and possibly face delisting.

Cash Transactions Risk – Unlike certain exchange-traded funds (“ETFs”), the Fund expects to effect its redemptions primarily for cash, rather than primarily for in-kind securities. As such, investments in Shares may be less tax-efficient than an investment in a conventional ETF which generally are able to make in-kind redemptions and avoid realizing gains in connection with transactions designed to raise cash to meet redemption requests.

Cybersecurity Risk – Cybersecurity incidents may allow an unauthorized party to gain access to Fund assets, customer data (including private shareholder information), or proprietary information, or cause the Fund, the Adviser and/or its service providers (including, but not limited to, Fund accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or lose operational functionality.

ESG Integration Risk – To the extent ESG factors are used to evaluate investments, the consideration of such factors may adversely affect a Fund’s performance. Not every ESG factor may be identified or evaluated for every investment. ESG characteristics are not the only factors considered and, as a result, the issuers in which a Fund invests may not be issuers with favorable ESG characteristics or high ESG ratings. The application of ESG factors may result in a Fund performing differently than its benchmark index and other funds in its peer group that do not consider ESG factors or consider different ESG factors.

High-Yield Bonds and Other Lower-Rated Securities Risk – The Fund’s investments in high-yield bonds (commonly referred to as “junk bonds”) and other lower-rated securities will subject the Fund to substantial risk of loss. Investments in high–yield bonds are speculative and issuers of these securities are generally considered to be less financially secure and less able to repay interest and principal than issuers of investment-grade securities. Prices of high-yield bonds tend to be very volatile. These securities are less liquid than investment-grade debt securities and may be difficult to price or sell, particularly in times of negative sentiment toward high-yield securities.

Interest Rate Risk – The Fund’s fixed income investments are subject to interest rate risk, which generally causes the value of a fixed income portfolio to decrease when interest rates rise resulting in a decrease in the Fund’s net assets. Interest rate fluctuations tend to have a greater impact on fixed income-securities with a greater time to maturity and/or lower coupon. A fund with a longer average portfolio duration will be more sensitive to changes in interest rates than a fund with a shorter average portfolio duration. In periods of market volatility, the market values of fixed income securities may be more sensitive to changes in interest rates.

Investment-Grade Debt Securities – Investment-grade debt securities are debt securities rated within the highest grades (AAA/Aaa through BBB-/Baa) by S&P or Moody’s rating services, and unrated securities of comparable quality. If a Fund invests, at the time of purchase, in a security that is investment-grade, it is possible that such security may be downgraded after its purchase so that it is no longer investment-grade.

Liquidity Risk - Generally, only APs may redeem Shares. Investors other than APs wishing to realize their Shares will generally need to rely on secondary trading in the public trading market. There can be no assurance as to the price at which, or volume in which, it may at any time be possible to realize Shares in the public trading market. Although the Shares are listed for trading on Nasdaq, there can be no assurance that an active trading market for such shares will develop or be maintained.

Portfolio Turnover Risk – The Fund may engage in active and frequent trading of portfolio securities to achieve its investment objective. High portfolio turnover may result in greater transaction costs which may reduce Fund performance. The sale of Fund portfolio securities may also result in greater realization and/or distribution to shareholders of gains or losses as compared to a fund with less active trading, which may include short-term gains taxable at ordinary income tax rates.

Summary - abrdn Ultra Short Municipal Income Active ETF

Tender Option Bonds Risk – Tender option bonds are synthetic floating-rate or variable-rate securities issued when long–term bonds are purchased in the primary or secondary market and then deposited into a trust. Tender option bonds may be considered derivatives, and may expose the Fund to the same risks as investments in derivatives, as well as risks associated with leverage, especially the risk of increased volatility.

Valuation Risk – The price that the Fund could receive upon the sale of any particular portfolio investment may differ from the Fund’s valuation of the investment, particularly for securities that trade in thin or volatile markets or that are valued using a fair valuation methodology or a price provided by an independent pricing service. As a result, the price received upon the sale of an investment may be less than the value ascribed by the Fund, and the Fund could realize a greater than expected loss or lesser than expected gain upon the sale of the investment. The Fund’s ability to value its investments may also be impacted by technological issues and/or errors by pricing services or other third-party service providers.

Variable and Floating Rate Securities Risk – For floating and variable rate obligations, there may be a lag between an actual change in the underlying interest rate benchmark and the reset time for an interest payment of such an obligation, which could harm or benefit the Fund, depending on the interest rate environment or other circumstances. Variable rate demand obligations (“VRDOs”) are floating rate securities that combine an interest in a long term municipal bond with a right to demand payment before maturity from a bank or other financial institution. If the bank or financial institution is unable to pay, the Fund may lose money.

If the value of the Fund’s investments decreases, you may lose money.

For additional information regarding the above identified risks, see “Additional Information about Investments, Investment Techniques and Risks” in the prospectus.

Performance

The bar chart and table below can help you evaluate potential risks of the Fund. It is currently contemplated that before the Fund commences operations, all of the assets of another investment company advised by abrdn Inc., abrdn Intermediate Municipal Income Fund (the "Predecessor Fund"), will be transferred to the Fund in a tax-free reorganization. It is currently contemplated that the reorganization, which does not require the approval of shareholders of the Fund or the Predecessor Fund, will occur on or around October 17, 2025. The Fund has a different investment objective and strategies as those of the Predecessor Fund.

The bar chart shows how the performance of the Fund’s Shares (represented by the performance of the Predecessor Fund’s Institutional Class Shares) has varied from year to year. The table following the bar chart compares the Fund’s performance over time with those of a broad measure of market performance and an additional index that more closely reflects the Fund’s investment strategy. The table compares the Fund’s average annual total returns (represented by the performance of the Predecessor Fund’s Institutional Class Shares) to the returns of the Bloomberg Municipal Bond Index, a broad-based securities index, and the Bloomberg Municipal Bond: 1 Year (1-2) Index. Performance for the Fund’s Shares has not been adjusted to reflect the Fund’s Shares’ lower expenses than those of the Predecessor Fund’s Institutional Class Shares. Performance for the Predecessor Fund is based on the NAV per share of the Predecessor Fund shares rather than on market-determined prices. Remember, however, that past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future. For updated performance information, please visit www.aberdeeninvestments.com/usa/etf or call 844-383-7289.

The Predecessor Fund changed its investment strategy effective February 28, 2019 to adopt a target average weighted effective duration. Performance information for periods prior to February 28, 2019 does not reflect such investment policy. In connection with the change in investment policy, the Predecessor Fund changed its name from Aberdeen Tax-Free Income Fund to Aberdeen Intermediate Municipal Income Fund.

Annual Total Returns – Institutional Class Shares

(Years Ended Dec. 31)

Year-to-Date Returns as of June 30, 2025: -0.89%

Highest Return: 6.81% – 4th quarter 2023

Lowest Return:  -5.54% – 1st quarter 2022

Summary - abrdn Ultra Short Municipal Income Active ETF

After-tax returns are shown in the following table for Institutional Class Shares. After-tax returns are calculated using the historical highest individual federal marginal income tax rates in effect and do not reflect the impact of state and local taxes. Your actual after-tax return depends on your personal tax situation and may differ from what is shown here. After-tax returns are not relevant to investors in tax-deferred arrangements, such as individual retirement accounts, 401(k) plans or certain other employer-sponsored retirement plans.

Average Annual Total Returns as of December 31, 2024

Investment Adviser

abrdn Inc. serves as the Ultra Short Municipal Income Active ETF’s investment adviser.

Portfolio Managers

The Fund is managed using a team-based approach, with the following team members being jointly and primarily responsible for the day-to-day management of the Fund:

Messrs. Laranjeiro and Mondillo also were the Predecessor Fund's portfolio managers since 2018.

Purchase and Sale of Fund Shares

The Fund is an exchange-traded fund (“ETF”). Individual Shares may only be purchased and sold in the secondary market through a broker-dealer. Shares are listed for trading on a national securities exchange, such as the Nasdaq. The price of Shares is based on market price, and because ETF Shares trade at market prices rather than NAV, shares may trade at a price greater than NAV (premium) or less than NAV (discount). An investor may incur costs attributable to the difference between the highest price a buyer is willing to pay to purchase shares of the Fund (bid) and the lowest price a seller is willing to accept for shares of the Fund (ask) when buying or selling shares in the secondary market (the “bid-ask spread”). Recent information, including information about the Fund’s NAV, market price, premiums and discounts, and bid-ask spreads, is included on the Fund’s website at www.aberdeeninvestments.com/usa/etf.

Tax Information

The Fund intends to distribute dividends exempt from regular federal income tax and capital gains distributions; although, a portion of the Fund’s distributions may be subject to federal income tax or alternative minimum tax. Please refer to “Taxes on Distributions” in the “Distributions and Taxes” section of this Prospectus for more information regarding taxes.

Payments to Broker-Dealers and Other Financial Intermediaries

If you purchase Shares through a broker-dealer or other financial intermediary (such as a bank) (an “Intermediary”), the Adviser or its affiliates may pay Intermediaries for certain activities related to the Fund, including participation in activities that are designed to make Intermediaries more knowledgeable about exchange-traded products, including the Fund, or for other activities, such as marketing, educational training or other initiatives related to the sale or promotion of Shares. These payments may create a conflict of interest by influencing the Intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit the Intermediary’s website for more information.