PROSPECTUS

January 27, 2023

Build Funds Trust

Build Bond Innovation ETF (BFIX)

Principal U.S. Listing Exchange for the Fund: NYSE Arca, Inc.

The Securities and Exchange Commission (“SEC”) has not approved or disapproved these securities or passed upon the adequacy of this Prospectus. Any representation to the contrary is a criminal offense.

Summary Information — Build Bond Innovation ETF

Investment Objective

Fund Fees and Expenses

Example

Portfolio Turnover

Principal Investment Strategies of the Fund

Principal Risks of Investing in the Fund

Performance

Management

Investment Adviser

Build Asset Management, LLC

Matthew Dines is responsible for the day-to-day management of the Fund and has served as the Adviser’s portfolio manager for the Fund since its inception.

Purchase and Sale of Fund Shares

The Fund issues and redeems Shares at NAV only in a large specified number of Shares each called a Creation Unit, or multiples thereof, and only with Authorized Participants which have entered into contractual arrangements with Foreside Fund Services, LLC, the Fund’s distributor (“Distributor”). A Creation Unit consists of 25,000 Shares. Creation Unit transactions are typically conducted in exchange for the deposit or delivery of in-kind securities in the Fund’s portfolio and/or cash.

Individual Shares of the Fund may only be purchased and sold on a national securities exchange through brokers. Shares of the Fund are listed on the Exchange and because Shares will trade at market prices rather than NAV, Shares of the Fund may trade at a price greater than or less than NAV. The Fund’s bid/ask spread will be available on its website at www.getbuilding.com/ETFs.

Premium/Discount Information

Most investors will buy and sell shares of the Fund in secondary market transactions through brokers at market prices and the Fund’s shares will trade at market prices. The market price of shares of the Fund may be greater than, equal to, or less than NAV. Market forces of supply and demand, economic conditions and other factors may affect the trading prices of shares of the Fund.

Information regarding how often Shares of the Fund traded on the Exchange at a price above (i.e., at a premium) or below (i.e., at a discount) the NAV of the Fund during the past four calendar quarters, or since inception, as applicable, can be found at the Fund’s website at www.getbuilding.com/ETFs.

Tax Information

Fund distributions are generally taxable as ordinary income, qualified dividend income, or capital gains (or a combination), unless your investment is in an individual retirement account (“IRA”) or other tax-advantaged account. Distributions on investments made through tax-deferred arrangements may be taxed later upon withdrawal of assets from those accounts.

Payments to Broker-Dealer and Other Financial Intermediaries

If you purchase Shares through a broker-dealer or other financial intermediary (such as a bank), the Adviser or other related companies may pay the intermediary for the sale of Shares or related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information.

More Information About the Fund

Investment Objective

Build Bond Innovation ETF (the “Fund”) seeks capital appreciation and risk mitigation.

Additional Information About Investment Strategies

The Fund is an actively managed exchange-traded fund (“ETF”) that seeks to achieve its investment objective through investing in a non-diversified portfolio of U.S. dollar-denominated, investment-grade bonds of U.S. and non-U.S. issuers either directly or indirectly via unaffiliated ETFs (“Underlying Funds”), (the “Fixed Income Strategy”) and call or put options linked to the performance of an equity, ETF, or index (collectively, the “Reference Asset”), (the “Equity Option Overlay Strategy”).

Under normal market conditions, the Fund invests 80% or more of its assets (defined as net assets plus any borrowing for investment purposes, if any) in bond instruments (“80% investment policy”), directly or by investing in Underlying Funds which invest primarily in bond instrument securities. The Fund defines bond instruments to include: (i) bonds, (ii) bills, (iii) notes, (iv) debentures, (v) mortgage-backed securities (“MBS”), (vi) consumer asset-backed securities (“ABS”), such as credit card and auto loan receivables, (vii) commercial mortgage-backed securities (“CMBS”) (viii) or any other debt or debt-related securities of any maturities, whether issued by U.S. or non-U.S. governments, agencies or instrumentalities thereof or corporate entities, and having fixed, variable, floating or inverse floating rates.

The Fund seeks to achieve its capital appreciation objective via two sources: (1) total return on the Fixed Income Strategy, and (2) total return on the Equity Option Overlay Strategy. The Fund seeks to achieve its risk mitigation objective by: (1) maintaining a moderate duration, investment grade (BBB-equivalent or better) average credit quality risk profile of its holdings in the Fixed Income Strategy, and (2) maintaining the Fund’s allocation to the Equity Option Overlay Strategy to between 0% and 10% its holdings.

Fixed Income Strategy

The Fixed Income Strategy invests in U.S. dollar denominated fixed income instruments of investment grade quality - i.e., recognized as BBB- or higher by at least one Nationally Recognized Statistical Rating Organizations (NRSRO) (e.g., Standard & Poor’s, Moody’s, or Fitch), directly or by investing in Underlying Funds which invest primarily in bonds and bond instrument securities.

The Fund’s adviser considers potential bond instrument investments, or investment in an Underlying Fund by evaluating credit quality, nominal yield and spread. With respect to credit quality, the adviser utilizes its own research, as well as third-party investment research, ratings, and analyses provided by credit ratings agencies (e.g., Moody’s, Standard & Poor’s and Fitch) and other investment research publishers. The Fund’s adviser identifies potential bond instrument investments from its eligible universe by evaluating risk factors aligned with the risk mitigation objective of the Fund, such as the liquidity of the underlying issue or security, credit profile of the issuer or Underlying Fund, asset class coverage, sector distribution, tracking error, and fees.

In forming a portfolio of holdings that make up the Fixed Income Strategy, the adviser selects a portfolio of securities it believes best maximizes the Fund’s expected total return potential while maintaining a risk profile consistent with a moderate duration and investment grade average credit quality. In analyzing individual securities for inclusion or removal from the Fixed Income Strategy’s holdings, the adviser evaluates individual fixed income securities or Underlying Funds on a relative value basis in a manner that the adviser believes to be most consistent with the Fund’s stated objectives. Under normal circumstances, the Fund will maintain an investment portfolio with a weighted average duration of no less than 1 year and no more than 8 years. The Fund anticipates an average maturity of holdings in the Fixed Income Strategy of no less than 1 year and no more than 10 years, with no constraint on maturity for any individual fixed income security.

Equity Option Overlay Strategy

The Fund’s Equity Option Overlay Strategy invests in a series of long call or long put options to provide exposure to positive returns (in the case of call options) or negative returns (in the case of put options) on the Reference Asset.. By investing in a series of call options on the Reference Asset, the Fund’s adviser seeks to provide convex exposure to the upside return profile of the Reference Asset – i.e., the Fund’s exposure to performance of the Reference Asset decreases when its returns are negative, and increases when its returns are positive. When the Fund purchases a call option, the Fund has the right, but not the obligation, to buy the underlying Reference Asset at a specified price (strike price) within a specific finite time period (until expiration). Conversely, by investing in a series of put options on the Reference Asset, the Fund’s adviser seeks to provide convex exposure to the downside return profile of the Reference Asset – i.e., the Fund’s exposure to performance of the Reference Asset decreases when its returns are positive, and increases when its returns are negative. When the Fund purchases a put option, the Fund has the right, but not the obligation, to sell the underlying Reference Asset at a specified price (strike price) within a specific finite time period (until expiration). Because the premiums for an option purchased by the Fund will typically be a fraction of the value of the Reference Asset, the option enables the Fund to gain greater exposure to the Reference Asset than the amount invested in such options. Consequently, with the call (put)options the Fund seeks to have greater participation in the appreciation (depreciation) of the Reference Asset than it would have by investing the same amounts directly in the Reference Asset, while through mitigation seeking to limit the maximum loss from such options to the premiums paid.

The Adviser selects an option based upon its evaluation of the option’s cost, strike price, expiration and price sensitivity to the Reference Asset. The Adviser may purchase an option on the Reference Asset that has a strike price above, at or below the price of the Reference Asset. Through the purchases of a series of call (put) options, the Adviser is seeking total return for the Fund to the extent the price of the Reference Asset increases (decreases) less the premium paid by the Fund for the options. When an option goes unexercised, the Fund’s total return declines as the return is reduced by the premium the Fund paid for the option.

The Adviser’s employs a risk management process to mitigate the risks associated with the option strategy. In addition, under normal market conditions, no more than 10% of the value of the Fund’s net assets will be subject to the Fund’s option strategy and no more than 2.5% of the Fund’s net assets will be subject to any single option. In addition, the Adviser considers the impact of transaction costs associated with implementing the Fund’s option strategy, including whether the potential benefits achieved in rising markets exceeds the negative impact of transaction costs associated with purchasing options. Under conditions of extreme stress or volatility in broader financial markets, including those in the Reference Asset, the Fund will incur increased transaction costs.

Other Principal Investments

During temporary defensive periods (e.g., in response to adverse market, economic or political conditions), the Fund may invest up to 100% of its total assets in liquid, short-term investments, including high quality, short-term securities. The Fund may not achieve its investment objective under these circumstances. The Adviser’s determination that it is temporarily unable to follow the Fund’s investment strategy or that it is impractical to do so will generally occur only in situations in which a market disruption event has occurred and where trading in the securities selected through application of the Fund’s investment strategy is extremely limited or absent.

Additional Information About the Fund’s Principal Risks

The following section provides additional information regarding certain of the principal risks identified under “Principal Risks” in the Fund’s summary.

Investors in the Fund should be willing to accept a high degree of volatility in the price of the Fund’s Shares and the possibility of significant losses. An investment in the Fund involves a substantial degree of risk. Therefore, you should consider carefully the following risks before investing in the Fund.

Fixed Income Risk. Fixed income risk factors include credit risk (the debtor may default) and prepayment risk (the debtor may pay its obligation early or later than expected, potentially reducing the amount of interest payments or extending time to principal repayment). These risks could affect the value of a particular investment possibly causing the Fund’s share price and total return to be reduced and fluctuate more than other types of investments. When the Fund invests in fixed income securities the value of your investment in the Fund will fluctuate with changes in interest rates. Typically, a rise in interest rates causes a decline in the value of fixed income securities. In general, the market price of debt securities with longer maturities will increase or decrease more in response to changes in interest rates than shorter-term securities. If the U.S. Federal Reserve’s Federal Open Market Committee (“FOMC”) raises the federal funds interest rate target, interest rates across the U.S. financial system may rise. However, the magnitude of rate changes across maturities and borrower sectors is uncertain. Rising rates may decrease liquidity and increase volatility, which may make portfolio management more difficult and costly to the Fund and its shareholders. Additionally, default risk increases if issuers must borrow at higher rates. Generally, these changing market conditions may cause the Fund’s share price to fluctuate or decline more than other types of equity investments.

Options Risk. An option is an agreement that, for a premium payment or fee, gives the option holder (the purchaser) the right but not the obligation to buy (a “call option”) or sell (a “put option”) the underlying asset (or settle for cash in an amount based on an underlying asset, rate, or index) at a specified price (the “exercise price”) during a period of time or on a specified date. Investments in options are considered speculative. When the Fund purchases a call option, it may lose the total premium paid for it if the price of the underlying security or other assets decreased, remained the same or failed to increase to a level at or beyond the exercise price. When the Fund purchases a put option, it may lose the total premium paid for it if the price of the underlying security or other assets increased, remained the same or failed to decrease to a level at or below the exercise price. If a put or call option purchased by the Fund were permitted to expire without being sold or exercised, its premium would represent a loss to the Fund.

Absence of Prior Active Market Risk. While the Fund’s Shares are listed on the Exchange, there can be no assurance that an active trading market for Shares will develop or be maintained. The Distributor does not maintain a secondary market in Shares. Further, secondary markets may be subject to irregular trading activity, wide bid/ask spreads and extended trade settlement periods in times of market stress because market makers and APs may step away from making a market in the Shares and in executing creation and redemption orders, which could cause a material deviation in the Fund’s market price from its NAV. As a result, investors in the Fund may pay significantly more or receive significantly less for Fund shares than the value of the Fund’s underlying securities or the NAV of Fund shares.

Active Management Risk. The Fund is actively managed, which means that investment decisions are made based on the Adviser’s investment views. There is no guarantee that the Adviser’s investment views will produce the desired results or expected returns, which may cause the Fund to fail to meet its investment objective or to underperform its benchmark index or funds with similar investment objectives and strategies. Furthermore, active trading that can accompany active management may result in high portfolio turnover, which may have a negative impact on performance. Active trading may result in higher brokerage costs or mark-up charges, which are ultimately passed on to shareholders of the Fund. Active trading may also result in adverse tax consequences. Certain securities or other instruments in which the Fund seeks to invest may not be available in the quantities desired. To the extent the Fund employs strategies targeting perceived pricing inefficiencies, arbitrage strategies or similar strategies, it is subject to the risk that the pricing or valuation of the securities and instruments involved in such strategies may change unexpectedly, which may result in reduced returns or losses to the Fund. Additionally, legislative, regulatory, or tax restrictions, policies or developments may affect the investment techniques available to the Adviser and each individual portfolio manager in connection with managing the Fund and may also adversely affect the ability of the Fund to achieve its investment objective.

Asset-Backed Securities Risk. Asset-backed securities are bonds or notes backed by a discrete pool of financial assets such as credit card receivables, automobile receivables and student loans. The impairment of the value of the financial assets underlying an asset-backed security, such as the non-payment of loans, may result in a reduction in the value of such asset-backed security. Certain asset-backed securities do not have the benefit of the same security interest in the underlying financial assets as do mortgage-backed securities, nor are they provided government guarantees of repayment. Accordingly, issuers of asset-backed securities may have limited ability to enforce the security interest in the underlying assets, and credit enhancements provided to support the asset-backed securities, if any, may be inadequate to protect investors in the event of default.

Authorized Participants, Market Makers, and Liquidity Providers Concentration Risk. The Fund has a limited number of financial institutions that may act as authorized participants (“Authorized Participants” or “APs”). In addition, there may be a limited number of market makers and/or liquidity providers in the marketplace. To the extent either of the following events occur, Shares may trade at a material discount to NAV and possibly face delisting: (i) APs exit the business or otherwise become unable to process creation and/or redemption orders and no other APs step forward to perform these services, or (ii) market makers and/or liquidity providers exit the business or significantly reduce their business activities and no other entities step forward to perform their functions.

Call Risk. During periods of falling interest rates, an issuer of a callable bond held by the Fund may “call” or repay the security before its stated maturity, and the Fund may have to reinvest the proceeds in securities with lower yields, which would result in a decline in the Fund’s income, or in securities with greater risks or with other less favorable features.

Credit Risk. Credit risk is the risk that the issuer or guarantor of a debt instrument or the counterparty to a derivatives contract, repurchase agreement or loan of portfolio securities will be unable or unwilling to make its timely interest and/or principal payments when due or otherwise honor its obligations. There are varying degrees of credit risk, depending on an issuer’s or counterparty’s financial condition and on the terms of an obligation, which may be reflected in the issuer’s or counterparty’s credit rating. There is the chance that the Fund’s portfolio holdings will have their credit ratings downgraded or will default (i.e., fail to make scheduled interest or principal payments), or that the market’s perception of an issuer’s creditworthiness may worsen, potentially reducing the Fund’s income level or share price.

Derivatives Risk. The Fund may invest in certain types of derivatives contracts, including options, which can be more sensitive to changes in interest rates or to sudden fluctuations in market prices than conventional securities, which can result in greater losses to the Fund.

Early Close/Trading Halt Risk: An exchange or market may close or impose a market trading halt or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may prevent the Fund from buying or selling certain securities or financial instruments. In these circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and may incur substantial trading losses.

ETF Structure Risk. The Fund is structured as an ETF and as a result is subject to the special risks, including:

Extension Risk. During periods of rising interest rates, certain debt obligations may be paid off substantially more slowly than originally anticipated and the value of those securities may fall sharply, resulting in a decline in the Fund’s income and potentially in the value of the Fund’s investments.

Interest Rate Risk. If interest rates rise, the value of fixed-income securities or other instruments held by the Fund would likely decrease. A measure investors commonly use to determine this price sensitivity is called duration. Fixed-income securities with longer durations tend to be more sensitive to interest rate changes, usually making their prices more volatile than those of securities with shorter durations. To the extent the Fund invests a substantial portion of its assets in fixed-income securities with longer duration, rising interest rates may cause the value of the Fund’s investments to decline significantly, which would adversely affect the value of the Fund. An increase in interest rates may lead to heightened volatility in the fixed-income markets and adversely affect certain fixed-income investments, including those held by the Fund. In addition, decreases in fixed income dealer market-making capacity may lead to lower trading volume, heightened volatility, wider bid-ask spreads and less transparent pricing in certain fixed-income markets. The historically low interest rate environment was created in part by the world’s major central banks keeping their overnight policy interest rates at, near or below zero percent and implementing monetary policy facilities, such as asset purchase programs, to anchor longer-term interest rates below historical levels. During periods of very low or negative interest rates, the Fund may be unable to maintain positive returns or pay dividends to Fund shareholders. Certain countries have recently experienced negative interest rates on certain fixed-income instruments. Very low or negative interest rates may magnify interest rate risk. Changing interest rates, including rates that fall below zero, may have unpredictable effects on markets, result in heightened market volatility and detract from the Fund’s performance to the extent the Fund is exposed to such interest rates. Additionally, under certain market conditions in which interest rates are set at low levels and the market prices of portfolio securities have increased, the Fund may have a very low, or even negative yield. A low or negative yield would cause the Fund to lose money in certain conditions and over certain time periods. Central banks may increase their short-term policy rates or begin phasing out, or “tapering,” accommodative monetary policy facilities in the future. The timing, coordination, magnitude and effect of such policy changes on various markets is uncertain, and such changes in monetary policy may adversely affect the value of the Fund’s investments.

Investing in the Underlying Funds Risk. The investments of the Fund in Underlying Funds are subject to statutory limitations prescribed by the Investment Company Act of 1940, as amended (the “Investment Company Act”), or exemptive relief or regulations thereunder. The Fund’s investment performance is directly related to the investment performance of the Underlying Funds it holds. The Fund is subject to the risk factors associated with the investments of the Underlying ETFs and will be affected by the investment policies and practices of the Underlying Funds in direct proportion to the amount of assets allocated to each. A strategy used by the Underlying Funds may fail to produce the intended results. If the Fund has a large portion of its portfolio in a single Underlying Fund, it may be more susceptible to adverse developments affecting that Underlying Fund, and may be more susceptible to losses because of these developments. The Underlying Funds are subject to investment advisory and other expenses, which will be indirectly paid by the Fund. As a result, the cost of investing in the Fund will be higher than the cost of investing directly in the Underlying Funds and may be higher than other funds that invest directly in stocks and bonds. Each of the Underlying Funds is subject to its own specific risks, but the Adviser expects the principal investments risks of such Underlying Funds will be similar to the risks of investing in the Fund.

Issuer Risk. Changes in the financial condition or credit rating of an issuer or counterparty, changes in specific economic or political conditions that affect a particular type of security or issuer, and changes in general economic or political conditions can affect a security’s or instrument’s value. The values of securities of smaller, less well-known issuers can be more volatile than those of larger issuers. Issuer-specific events can have a negative impact on the value of the Fund.

LIBOR Transition Risk. The risk related to the anticipated discontinuation of the London Interbank Offered Rate (“LIBOR”). Certain instruments held by the Fund rely in some fashion upon LIBOR. Although the transition process away from LIBOR has become increasingly well-defined in advance of the anticipated discontinuation date, there remains uncertainty regarding the nature of any replacement rate, and any potential effects of the transition away from LIBOR on the Fund or on certain instruments in which the Fund invests can be difficult to ascertain. The transition process may involve, among other things, increased volatility or illiquidity in markets for instruments that currently rely on LIBOR and may result in a reduction in value of certain instruments held by the Fund..

Limited History of Operations Risk. The Fund has a limited history of operations for investors to evaluate.

Liquidation Risk. If a Fund does not grow to a size to permit it to be economically viable, the Fund may cease operations. In such an event, shareholders may be required to liquidate or transfer their Fund shares at an inopportune time and shareholders may lose money and/or be taxed on their investment. In stressed market conditions, the market for the Fund’s shares may become less liquid in response to deteriorating liquidity in the markets for the Fund’s underlying portfolio holdings. This adverse effect on liquidity for the Fund’s shares in turn could lead to differences between the market price of the Fund’s shares and the underlying value of those shares.

Market and Geopolitical Risk.  The increasing interconnectivity between global economies and financial markets increases the likelihood that events or conditions in one region or financial market may adversely impact issuers in a different country, region or financial market. Securities in the Fund’s portfolio may underperform due to inflation (or expectations for inflation), interest rates, global demand for particular products or resources, natural disasters, climate change and climate-related events, pandemics, epidemics, terrorism, regulatory events and governmental or quasi-governmental actions. The occurrence of global events similar to those in recent years may result in market volatility and may have long term effects on both the U.S. financial market. The current novel coronavirus (COVID-19) global pandemic and the aggressive responses taken by many governments, including closing borders, restricting international and domestic travel, and the imposition of prolonged quarantines or similar restrictions, as well as the forced or voluntary closure of, or operational changes to, many retail and other businesses, has had negative impacts, and in many cases severe negative impacts, on the U.S. financial market. It is not known how long such impacts, or any future impacts of other significant events described above, will or would last, but there could be a prolonged period of global economic slowdown, which may impact your Fund investment.

Market Trading Risk. The Fund faces numerous market trading risks, including disruptions to the creation and redemption processes of the Fund, losses from trading in secondary markets, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. The NAV of Shares will fluctuate with changes in the market value of the Fund’s securities holdings. The market prices of Shares will fluctuate in accordance with changes in NAV and supply and demand on the Exchange. The Fund cannot predict whether Shares will trade below, at or above their NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses. Any of these factors, discussed above and further below, may lead to Shares trading at a premium or discount to the Fund’s NAV.

Mitigating Risk. When a derivative such as options is used as a hedge against a position that the Fund holds, any loss generated by the derivative generally should be substantially offset by gains on the hedged investment, and vice versa. While mitigating risk through hedging can reduce or eliminate losses, it can also reduce or eliminate gains. Hedges are sometimes subject to imperfect matching between the derivative and the underlying security, and there can be no assurance that the Fund’s hedging transactions, which entail additional transaction costs, will be effective.

Mortgage-Backed Security Risk. The Fund invests in securities backed by pools of mortgages issued or guaranteed by the U.S. government or one of its agencies or sponsored entities, including Fannie Mae, Ginnie Mae or Freddie Mac. While securities guaranteed by Ginnie Mae are backed by the full faith and credit of the U.S. government, securities issued by Fannie Mae and Freddie Mac are not backed by the full faith and credit of the U.S. government, and there can be no assurance that the U.S. government would provide financial support to its agencies or sponsored entities where it is not obligated to do so. Bonds or debentures that do not carry the backing of the full faith and credit of the U.S. government are subject to more credit risk than securities that are supported by the full faith and credit of the U.S. government. To the extent that the U.S. government has provided support to a U.S. agency or sponsored entity in the past, there can be no assurance that the U.S. government will provide support in the future if it is not obligated to do so. If a U.S. government agency or sponsored entity that is the issuer of securities in which the Fund invests is unable to meet its obligations or ceases to exist and no plan is made for repayment of securities, the performance of the Fund will be adversely affected. MBS represent interests in “pools” of mortgages and, due to the nature of these loans they represent, are subject to prepayment and extension risk. Prepayment risk is the risk that, during periods of falling interest rates, an issuer of mortgages and other fixed-income securities may be able to repay principal prior to the security’s maturity. This may cause the Fund to have to reinvest in securities with a lower yield or higher risk of default, resulting in a decline in the Fund’s income or return potential. MBS are also subject to extension risk, which is the risk that when interest rates rise, certain MBS will be paid off substantially more slowly than originally anticipated and the value of those securities may fall sharply, resulting in a decline in income and potentially in the value of the investment.

Because of prepayment and extension risks, MBS react differently to changes in interest rates than other bonds. Small movements in interest rates (both increases and decreases) may quickly and significantly reduce the value of certain MBS. These securities are also subject to the risk of default on the underlying mortgage loans, particularly during periods of economic downturn. The Fund seeks to obtain exposure to the fixed-rate portion of U.S. agency mortgage pass through securities primarily through TBA securities, or TBA transactions. TBAs refer to a commonly used mechanism for the forward settlement of U.S. agency MBS, and not to a separate type of MBS. Default or bankruptcy of a counterparty to a TBA transaction would expose the Fund to possible losses because of adverse market action, expenses or delays in connection with the purchase or sale of the pools of mortgage pass-through securities specified in the TBA transaction. The Fund intends to invest cash pending settlement of TBA transactions in money market instruments, repurchase agreements, or other high quality, liquid short-term instruments, including money market funds advised by BFA. The Fund will pay its pro rata share of fees and expenses of any money market fund that it may invest in, in addition to the Fund’s own fees and expenses.

In addition to the Fund investing in MBS issued or guaranteed by the U.S. government or one of its agencies or sponsored entities, the Fund may invest in commercial mortgage-backed securities (“CMBS”) including securities that reflect an interest in, and are secured by, mortgage loans on commercial real property. CMBS may be less liquid and exhibit greater price volatility than other types of mortgage- or asset-backed securities.

Non-Diversification Risk. The Fund is non-diversified. This means that it may invest a larger portion of its assets in a limited number of companies than a diversified fund. Because a relatively high percentage of the Fund’s assets may be invested in the securities of a limited number of companies that could be in the same or related economic sectors, the Fund’s portfolio may be more susceptible to any single economic, technological or regulatory occurrence than the portfolio of a diversified fund.

Pandemics Risk. An outbreak of infectious respiratory illness caused by the novel coronavirus known as COVID-19 was first detected in China in December 2019 before spreading worldwide and being declared a global pandemic by the World Health Organization in March 2020. COVID-19 has resulted in travel restrictions, closed international borders, enhanced health screenings, disruption and delays in healthcare services, prolonged quarantines, cancellations, temporary store closures, social distancing, government ordered curfews and business closures, disruptions to supply chains and consumer activity, shortages, highly volatile financial markets, and general concern and uncertainty. The impact of COVID-19, and other infectious illness outbreaks that may arise in the future, could adversely affect the economies and capital markets of many nations or the entire global economy, as well as individual companies, entire sectors, and securities and commodities markets (including liquidity), in ways that may not necessarily be foreseen at the present time. COVID-19 and other health crises in the future may exacerbate other pre-existing political, social and economic risks, and its impact in developing or emerging market countries may be greater due to less established health care systems. The duration and ultimate impact of the current outbreak is not known. There is a risk that you may lose money by investing in the Fund.

Portfolio Turnover Risk. A higher portfolio turnover may result in higher transactional and brokerage costs associated with the turnover which may reduce the Fund’s return, unless the securities traded can be bought and sold without corresponding commission costs. Active trading of securities may also increase the Fund’s realized capital gains or losses, which may affect the taxes you pay as a Fund shareholder.

Shares May Trade at Prices Other Than NAV Risk. As with all ETFs, Shares may be bought and sold in the secondary market at market prices. Although it is expected that the market price of Shares will approximate the Fund’s NAV, there may be times when the market price of Shares is more than the NAV intra-day (premium) or less than the NAV intra-day (discount) due to supply and demand of Shares or during periods of market volatility. As a result, investors may pay significantly more or significantly less for Shares than the Fund’s NAV, which is reflected in the bid and ask price for Shares or in the closing price. This risk is heightened in times of market volatility, periods of steep market declines, and periods when there is limited trading activity for Shares in the secondary market, in which case such premiums or discounts may be significant.

U.S. Government Obligations Risk. of U.S. government agencies and authorities are supported by varying degrees of credit but generally are not backed by the full faith and credit of the U.S. government. Bonds or debentures that do not carry the backing of the full faith and credit of the U.S. government are subject to more credit risk than securities that are supported by the full faith and credit of the U.S. government. To the extent that the U.S. government has provided support to a U.S. agency or sponsored entity in the past, there can be no assurance that the U.S. government will provide support in the future if it is not obligated to do so. If a U.S. government agency or sponsored entity that is the issuer of securities in which the Fund invests is unable to meet its obligations or ceases to exist and no plan is made for repayment of securities, the performance of the Fund will be adversely affected. Similar to other issuers, changes to the financial condition or credit rating of the U.S. government or U.S. government agencies and authorities may cause the value of the Fund’s investments to decline. Direct obligations of U.S. government agencies and authorities have historically involved little risk of loss of principal if held to maturity. However, due to fluctuations in interest rates, the market value of such securities may vary during the period shareholders own shares of the Fund.

Changes in Investment Objective or Policies

The Fund’s Board of Trustees (the “Board”) may change the Fund’s investment objective and/or its 80% policy, both of which are non-fundamental, without shareholder approval upon 60 days’ written notice to shareholders. The Fund’s other investment policies and strategies may be changed by the Board without shareholder approval unless otherwise provided in this prospectus or in the Statement of Additional Information.

Temporary Defensive Investments

The Fund may take temporary defensive positions that are inconsistent with its normal investment policies and strategies—for instance, by allocating assets to cash, cash equivalent investments or other less volatile instruments — in response to adverse or unusual market, economic, political, or other conditions. In doing so, the Fund may succeed in avoiding losses but may otherwise fail to achieve its investment objective.

Manager-of-Managers Order

The Fund is not currently sub-advised. In the event that the Fund utilizes a sub-adviser, the Trust and the Adviser may seek to obtain an exemptive order from the SEC that permits the Adviser, with the Board’s approval, to enter into sub-advisory agreements with one or more sub-advisers without obtaining shareholder approval. The exemptive order would permit the Adviser, subject to the approval of the Board, to replace sub-advisers or amend sub-advisory agreements, including fees, without shareholder approval if the Adviser and the Board believe such action will benefit the Fund and its shareholders.

Other Risks

The following section provides information regarding certain other risks of investing in the Fund.

Costs of Buying or Selling Shares. Investors buying or selling Shares in the secondary market will pay brokerage commissions or other charges imposed by brokers as determined by that broker. Brokerage commissions are often a fixed amount and may be a significant proportional cost for investors seeking to buy or sell relatively small amounts of Shares. In addition, secondary market investors will also incur the cost of the difference between the price that an investor is willing to pay for Shares (the “bid” price) and the price at which an investor is willing to sell Shares (the “ask” price). This difference in bid and ask prices is often referred to as the “spread” or “bid/ask spread.” The bid/ask spread varies over time for Shares based on trading volume and market liquidity and is generally lower if the Fund’s Shares have more trading volume and market liquidity and higher if the Fund’s Shares have little trading volume and market liquidity. Further, increased market volatility may cause increased bid/ask spreads. Due to the costs of buying or selling Shares, including bid/ask spreads, frequent trading of Shares may significantly reduce investment results and an investment in Shares may not be advisable for investors who anticipate regularly making small investments.

Cybersecurity and Disaster Recovery. Information and technology systems relied upon by the Fund, the Adviser, the Fund’s other service providers (including, but not limited to, the Fund Accountant, Custodian, Transfer Agent, Administrator, Distributor and index providers, as applicable), market makers, Authorized Participants, financial intermediaries and/or the issuers of securities in which the Fund invests may be vulnerable to damage or interruption from computer viruses, network failures, computer and telecommunication failures, infiltration by unauthorized persons, security breaches, usage errors, power outages and catastrophic events such as fires, tornadoes, floods, hurricanes and earthquakes. Although the Adviser and the Fund’s other service providers have implemented measures to manage risks relating to these types of events, if these systems are compromised, become inoperable for extended periods of time or cease to function properly, significant investment may be required to fix or replace them. The failure of these systems and/or of disaster recovery plans could cause significant interruptions in the operations of the Fund, the Adviser, the Fund’s other service providers, market makers, Authorized Participants, financial intermediaries and/or issuers of securities in which the Fund invests and may result in a failure to maintain the security, confidentiality or privacy of sensitive data, impact the Fund’s ability to calculate its net asset value or impede trading. Such a failure could also harm the reputation of the Fund, the Adviser, the Fund’s other service providers, market makers, Authorized Participants, financial intermediaries and/or issuers of securities in which the Fund invests, subject such entities and their respective affiliates to legal claims or otherwise affect their business and financial performance.

Operations. The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund’s service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Disclosure of Portfolio Holdings

The Fund’s portfolio holdings will be disclosed each day on its website at www.getbuilding.com/ETFs. A description of the Fund’s policies and procedures with respect to the disclosure of the Fund’s portfolio securities is available in the SAI.

Fund Management

The Adviser

Build Asset Management, LLC, located in Jefferson City, Missouri, serves as the investment adviser (“Adviser”) to Build Bond Innovation ETF. As of September 30, 2022, the Adviser has approximately $30 million in assets under management.

The Adviser is responsible for the Fund’s investment operations and its business affairs. Pursuant to a management agreement between the Trust and the Adviser with respect to the Fund (“Management Agreement”) and subject to the general oversight of the Board, the Adviser provides or causes to be furnished all supervisory and other services reasonably necessary for the operation of the Fund, including audit, portfolio accounting, legal, transfer agency, custody, printing costs, certain administrative services (provided pursuant to a separate administration agreement), certain distribution services (provided pursuant to a separate distribution agreement), certain shareholder and distribution-related services (provided pursuant to a separate Rule 12b-1 Plan and related agreements) under what is a unitary fee structure. The Fund may bear other expenses which are not covered under the Management Agreement that may vary and will affect the total level of expenses paid by the Fund, such as taxes and governmental fees, brokerage fees, commissions and other transaction expenses, costs of borrowing money, including interest expenses, certain custody expenses and extraordinary expenses (such as litigation and indemnification expenses).

The Adviser is paid a monthly management fee at an annual rate (stated as a percentage of the average daily net assets of the Fund) of 0.45%. The Management Agreement between the Fund and the Adviser provides that the Adviser will pay all operating expenses of the Fund, except for certain expenses, including but not limited to, interest expenses, taxes, brokerage expenses, future Rule 12b-1 fees (if any), acquired fund fees and expenses, and the management fee payable to the Adviser under the Management Agreement. For the period from inception through September 30, 2022, the Fund incurred $86,080 in investment advisory fees.

A discussion regarding the Board of Trustees’ approval of the Management Agreement with respect to the Fund is available in the Fund’s annual report for the fiscal year ended September 30, 2022.

Portfolio Manager

The portfolio manager listed below is responsible for the day-to-day management of the Fund. Please refer to the SAI for additional information about the portfolio manager’s compensation, other accounts managed by the portfolio manager and his ownership of Shares of the Fund.

Shareholder Information

Investments by Investment Companies

Registered investment companies and unit investment trusts ("Investing Funds") are subject to the restrictions of Section 12(d)(1) of the 1940 Act when investing in the Fund, except as permitted (i) under Rule 12d1-4 of the 1940 Act or (ii) pursuant to an exemptive order that permits Investing Funds to invest in a Fund beyond the limits in Section 12(d)(1), subject to certain terms and conditions, including that the Investing Fund enter into an agreement with the Fund regarding the terms of the investment.

Determination of NAV

The NAV per Share for the Fund is computed by dividing the value of the net assets of the Fund (i.e., the value of its total assets less total liabilities) by the total number of Shares outstanding. Expenses and fees, including the management fee, are accrued daily and taken into account for purposes of determining NAV. The NAV of the Fund is determined each business day as of the close of trading (ordinarily 4:00 p.m. Eastern time) on the NYSE. Any assets or liabilities denominated in currencies other than the U.S. dollar are converted into U.S. dollars at the current market rates on the date of valuation as quoted by one or more sources.

The values of the Fund’s portfolio securities are based on the securities’ closing prices on their local principal markets, where available. In the absence of a last reported sales price, or if no sales were reported, and for other assets for which market quotes are not readily available, values may be based on quotes obtained from a quotation reporting system, established market makers or by an outside independent pricing service. Prices obtained by an outside independent pricing service use information provided by market makers or estimates of market values obtained from data related to investments or securities with similar characteristics and may use a computerized grid matrix of securities and its evaluations in determining what it believes is the fair value of the portfolio securities. If a market quotation for a security is not readily available or the Adviser believes it does not otherwise accurately reflect the market value of the security at the time the Fund calculates its NAV, the security will be fair valued by the Adviser, in accordance with the Trust’s valuation policies and procedures approved by the Board of Trustees of the Trust. The Fund may also use fair value pricing in a variety of circumstances, including but not limited to, situations where the value of a security in the Fund’s portfolio has been materially affected by events occurring after the close of the market on which the security is principally traded (such as a corporate action or other news that may materially affect the price of a security) or trading in a security has been suspended or halted. Fair value pricing involves subjective judgments and it is possible that a fair value determination for a security is materially different than the value that could be realized upon the sale of the security. To the extent the Fund invests in securities that are primarily listed on foreign exchanges or other markets that trade on weekends or other days when the Fund does not price its Shares, the value of the Fund’s portfolio securities may change on days when the Fund shareholder will not be able to purchase or sell his or her Shares.

Buying and Selling Exchange-Traded Shares

Authorized Participants

The Fund issues and redeems Shares at NAV only in Creation Units. Only APs may acquire Shares directly from the Fund, and only APs may tender their Shares for redemption directly to the Fund, at NAV. APs must be (i) a broker-dealer or other participant in the clearing process through the Continuous Net Settlement System of the NSCC, a clearing agency that is registered with the SEC; or (ii) a Depository Trust Company (“DTC”) participant (as discussed below). In addition, each AP must execute a Participant Agreement that has been agreed to by the Distributor, and that has been accepted by the Transfer Agent, with respect to purchases and redemptions of Creation Units. Once created, Shares trade in the secondary market in quantities less than a Creation Unit.

An Authorized Participant that is not a “qualified institutional buyer,” as such term is defined under Rule 144A of the Securities Act, will not be able to receive, as part of a redemption, restricted securities eligible for resale under Rule 144A.

Investors

Most investors buy and sell Shares in secondary market transactions through brokers. Shares are listed for trading on the secondary market on the Exchange and can be bought and sold throughout the trading day like other publicly traded securities.

When buying or selling Shares through a broker, you will incur customary brokerage commissions and charges, and you may pay some or all of the spread between the bid and the offer price in the secondary market on each leg of a round trip (purchase and sale) transaction. In addition, because secondary market transactions occur at market prices, you may pay more than NAV when you buy Shares, and receive less than NAV when you sell those Shares.

Book Entry

Shares are held in book-entry form, which means that no stock certificates are issued. DTC or its nominee is the record owner of all outstanding Shares.

Investors owning Shares are beneficial owners as shown on the records of DTC or its participants. DTC serves as the securities depository for all Shares. DTC’s participants include securities brokers and dealers, banks, trust companies, clearing corporations and other institutions that directly or indirectly maintain a custodial relationship with DTC. As a beneficial owner of Shares, you are not entitled to receive physical delivery of stock certificates or to have Shares registered in your name, and you are not considered a registered owner of Shares. Therefore, to exercise any right as an owner of Shares, you must rely upon the procedures of DTC and its participants. These procedures are the same as those that apply to any other securities that you hold in book entry or “street name” through your brokerage account.

Continuous Offering

The method by which Creation Units are created and traded may raise certain issues under applicable securities laws. Because new Creation Units are issued and sold by the Trust on an ongoing basis, a “distribution,” as such term is used in the Securities Act of 1933, as amended (“Securities Act”), may occur at any point. Broker dealers and other persons are cautioned that some activities on their part may, depending on the circumstances, result in their being deemed participants in a distribution in a manner which could render them statutory underwriters and subject them to the prospectus delivery and liability provisions of the Securities Act.

For example, a broker dealer firm or its client may be deemed a statutory underwriter if it takes Creation Units after placing an order with the Transfer Agent, breaks them down into constituent Shares, and sells such Shares directly to customers, or if it chooses to couple the creation of a supply of new Shares with an active selling effort involving solicitation of secondary market demand for Shares. A determination of whether one is an underwriter for purposes of the Securities Act must take into account all the facts and circumstances pertaining to the activities of the broker dealer or its client in the particular case, and the examples mentioned above should not be considered a complete description of all the activities that could lead to a categorization as an underwriter.

Broker dealers who are not “underwriters” but are participating in a distribution (as contrasted to ordinary secondary trading transactions), and thus dealing with Shares that are part of an “unsold allotment” within the meaning of Section 4(3)(C) of the Securities Act, would be unable to take advantage of the prospectus delivery exemption provided by Section 4(3) of the Securities Act. This is because the prospectus delivery exemption in Section 4(3) of the Securities Act is not available in respect of such transactions as a result of Section 24(d) of the 1940 Act. As a result, broker dealer firms should note that dealers who are not underwriters but are participating in a distribution (as contrasted with ordinary secondary market transactions) and thus dealing with Shares that are part of an overallotment within the meaning of Section 4(3)(A) of the Securities Act would be unable to take advantage of the prospectus delivery exemption provided by Section 4(3) of the Securities Act. Firms that incur a prospectus delivery obligation with respect to Shares are reminded that, under Rule 153 of the Securities Act, a prospectus delivery obligation under Section 5(b)(2) of the Securities Act owed to an exchange member in connection with a sale on the Exchange is satisfied by the fact that the prospectus is available at the Exchange upon request. The prospectus delivery mechanism provided in Rule 153 is only available with respect to transactions on an exchange.

In addition, certain affiliates of the Fund and the Adviser may purchase and resell Fund shares pursuant to this Prospectus.

For More Information:

Existing Shareholders or Prospective Investors

Build Bond Innovation ETF
c/o Foreside Fund Services, LLC
Three Canal Plaza, Suite 100
Portland, Maine 04101

Dealers

Build Bond Innovation ETF
c/o Foreside Fund Services, LLC
Three Canal Plaza, Suite 100
Portland, Maine 04101

Distribution and Service Plan

The Board has adopted a Distribution and Service Plan (the “Plan”) pursuant to Rule 12b-1 under the 1940 Act. In accordance with the Plan, the Fund is authorized to pay an amount up to 0.25% of its average daily net assets each year for certain distribution-related activities and shareholder services.

No Rule 12b-1 fees are currently paid by the Fund, and there are no plans to impose these fees. However, in the event Rule 12b-1 fees are charged in the future, because the fees are paid out of the Fund’s assets, over time these fees will increase the cost of your investment and may cost you more than certain other types of sales charges.

Frequent Purchases and Redemptions of Fund Shares

The Board has evaluated the risks of frequent purchases and redemptions of Fund shares (“market timing”) activities by the Fund’s shareholders. The Board noted that Shares can only be purchased and redeemed directly from the Fund in Creation Units by Authorized Participants and that the vast majority of trading in Shares occurs on the secondary market. Because the secondary market trades do not involve the Fund directly, it is unlikely those trades would cause many of the harmful effects of market timing, including dilution, disruption of portfolio management, increases in the Fund’s trading costs and the realization of capital gains.

With respect to trades directly with the Fund, to the extent effected in-kind, those trades do not cause any of the harmful effects (as previously noted) that may result from frequent cash trades. To the extent that the Trust allows or requires trades to be effected in whole or in part in cash, the Board noted that those trades could result in dilution to the Fund and increased transaction costs, which could negatively impact the Fund’s ability to achieve its investment objective. However, the Board noted that direct trading by APs is critical to ensuring that Shares trade at or close to NAV. The Fund also employs fair valuation pricing to minimize potential dilution from market timing. The Fund imposes transaction fees on in-kind purchases and redemptions of Shares to cover the custodial and other costs incurred by the Fund in effecting in-kind trades, these fees increase if an investor substitutes cash in part or in whole for securities, reflecting the fact that the Fund’s trading costs increase in those circumstances. Given this structure, the Board determined that it is not necessary to adopt policies and procedures to detect and deter market timing of Shares.

Distributions

Dividends and Distributions

The Fund intends to qualify each year as a regulated investment company under the Internal Revenue Code of 1986, as amended (the “Code”). As a regulated investment company, the Fund generally pays no federal income tax on the income and gains it distributes to you. The Fund expects to declare and distribute all of its net investment income, if any, to shareholders as dividends monthly.

The Fund will distribute net realized capital gains, if any, at least annually. The Fund may distribute such income dividends and capital gains more frequently, if necessary, in order to reduce or eliminate federal excise or income taxes on the Fund. The amount of any distribution will vary, and there is no guarantee the Fund will pay either an income dividend or a capital gains distribution.

Annual Statements

Each year, you will receive an annual statement (Form 1099) of your account activity to assist you in completing your federal, state and local tax returns. Distributions declared in December to shareholders of record in such month, but paid in January, are taxable as if they were paid in December. The Fund make every effort to search for reclassified income to reduce the number of corrected forms mailed to you. However, when necessary, you will receive a corrected Form 1099 to reflect reclassified information.

Avoid “Buying a Dividend”

At the time you purchase your Shares, the price of Shares may reflect undistributed income, undistributed capital gains, or net unrealized appreciation in value of portfolio securities held by the Fund. For taxable investors, a subsequent distribution to you of such amounts, although constituting a return of your investment, would be taxable. Buying Shares in the Fund just before it declares an income dividend or capital gains distribution is sometimes known as “buying a dividend.”

Dividend Reinvestment Service

Brokers may make available the Depository Trust Company book-entry dividend reinvestment service to their customers who own Fund Shares. If this service is available and used, dividend distributions of both income and capital gains will automatically be reinvested in additional whole Shares of the Fund purchased on the secondary market. Without this service, investors would receive their distributions in cash. To determine whether the dividend reinvestment service is available and whether there is a commission or other charge for using this service, consult your broker. Brokers may require Fund shareholders to adhere to specific procedures and timetables. If this service is available and used, dividend distributions of both income and realized gains will be automatically reinvested in additional whole Shares of the Fund purchased in the secondary market.

Tax Information

Tax Considerations

The Fund expects, based on its investment objective and strategies, that its distributions, if any, will be taxable as ordinary income, capital gains, or some combination of both. This is true whether you reinvest your distributions in additional Shares or receive them in cash. For federal income tax purposes, Fund distributions of short-term capital gains are taxable to you as ordinary income. Fund distributions of long-term capital gains are taxable to you as long-term capital gains no matter how long you have owned your Shares. A portion of income dividends reported by the Fund may be qualified dividend income eligible for taxation by individual shareholders at long-term capital gain rates provided certain holding period requirements are met.

As with any investment, you should consider how your Fund investment will be taxed. The tax information in this Prospectus is provided as general information. You should consult your own tax professional about the tax consequences of an investment in the Fund, including the possible application of foreign, state and local taxes. Unless your investment in the Fund is through a tax-exempt entity or tax-deferred retirement account, such as a 401(k) plan, you need to be aware of the possible tax consequences when: (i) the Fund makes distributions, (ii) you sell Shares in the secondary market or (iii) you create or redeem Creation Units.

Taxes on Distributions

The Fund intends to distribute, at least annually, substantially all of its net investment income and net capital gains. For federal income tax purposes, distributions of investment income are generally taxable as ordinary income or qualified dividend income. Taxes on distributions of capital gains (if any) are determined by how long the Fund owned the investments that generated them, rather than how long a shareholder has owned his or her Shares. Sales of assets held by the Fund for more than one year generally result in long-term capital gains and losses, and sales of assets held by the Fund for one year or less generally result in short-term capital gains and losses. Distributions of the Fund’s net capital gain (the excess of net long-term capital gains over net short-term capital losses) that are reported by the Fund as capital gain dividends (“Capital Gain Dividends”) will be taxable as long-term capital gains, which for non-corporate shareholders are subject to tax at reduced rates of up to 20% (lower rates apply to individuals in lower tax brackets). Distributions of short-term capital gain will generally be taxable as ordinary income. Dividends and distributions are generally taxable to you whether you receive them in cash or reinvest them in additional Shares.

Distributions reported by the Fund as “qualified dividend income” are generally taxed to noncorporate shareholders at rates applicable to long-term capital gains, provided holding period and other requirements are met. “Qualified dividend income” generally is income derived from dividends paid by U.S. corporations or certain foreign corporations that are either incorporated in a U.S. possession or eligible for tax benefits under certain U.S. income tax treaties. In addition, dividends that the Fund received in respect of stock of certain foreign corporations may be qualified dividend income if that stock is readily tradable on an established U.S. securities market.

U.S. individuals with income exceeding specified thresholds are subject to a 3.8% Medicare contribution tax on all or a portion of their “net investment income,” which includes interest, dividends, and certain capital gains (generally including capital gains distributions and capital gains realized on the sale of Shares). This 3.8% tax also applies to all or a portion of the undistributed net investment income of certain shareholders, such as estates and trusts, whose gross income as adjusted or modified for tax purposes exceeds certain threshold amounts.

In general, your distributions are subject to federal income tax for the year in which they are paid. Certain distributions paid in January, however, may be treated as paid on December 31 of the prior year. Distributions are generally taxable even if they are paid from income or gains earned by the Fund before your investment (and thus were included in the Shares’ NAV when you purchased your Shares).

You may wish to avoid investing in the Fund shortly before a dividend or other distribution, because such a distribution will generally be taxable even though it may economically represent a return of a portion of your investment. Distributions in excess of the Fund’s current and accumulated earnings and profits are treated as a tax-free return of your investment to the extent of your basis in the Shares, and generally as capital gain thereafter. A return of capital, which for tax purposes is treated as a return of your investment, reduces your basis in Shares, thus reducing any loss or increasing any gain on a subsequent taxable disposition of Shares. A distribution will reduce the Fund’s NAV per Share and may be taxable to you as ordinary income or capital gain even though, from an economic standpoint, the distribution may constitute a return of capital.

Dividends, interest and gains from non-U.S. investments of the Fund may give rise to withholding and other taxes imposed by foreign countries. Tax conventions between certain countries and the United States may, in some cases, reduce or eliminate such taxes.

If you are neither a resident nor a citizen of the United States or if you are a foreign entity, distributions (other than Capital Gain Dividends) paid to you by the Fund will generally be subject to a U.S. withholding tax at the rate of 30% unless a lower treaty rate applies. The Fund may, under certain circumstances, report all or a portion of a dividend as an “interest-related dividend” or a “short-term capital gain dividend,” which would generally be exempt from this 30% U.S. withholding tax, provided certain other requirements are met.

The Fund (or a financial intermediary, such as a broker, through which a shareholder owns Shares) generally is required to withhold and remit to the U.S. Treasury a percentage of the taxable distributions and sale or redemption proceeds paid to any shareholder who fails to properly furnish a correct taxpayer identification number, who has underreported dividend or interest income, or who fails to certify that he, she or it is not subject to such withholding.

Shortly after the close of each calendar year, you will be informed of the character of any distributions received from the Fund.

Taxes When Shares are Sold on the Exchange

Any capital gain or loss realized upon a sale of Shares generally is treated as a long-term capital gain or loss if Shares have been held for more than one year and as a short-term capital gain or loss if Shares have been held for one year or less. However, any capital loss on a sale of Shares held for six months or less is treated as long-term capital loss to the extent of Capital Gain Dividends paid with respect to such Shares. The ability to deduct capital losses may be limited.

Taxes on Purchases and Redemptions of Creation Units

An Authorized Participant having the U.S. dollar as its functional currency for U.S. federal income tax purposes who exchanges securities for Creation Units generally recognizes a gain or a loss. The gain or loss will be equal to the difference between the value of the Creation Units at the time of the exchange and the exchanging Authorized Participant’s aggregate basis in the securities delivered plus the amount of any cash paid for the Creation Units. An Authorized Participant who exchanges Creation Units for securities will generally recognize a gain or loss equal to the difference between the exchanging Authorized Participant’s basis in the Creation Units and the aggregate U.S. dollar market value of the securities received, plus any cash received for such Creation Units. The Internal Revenue Service may assert, however, that a loss that is realized upon an exchange of securities for Creation Units may not be currently deducted under the rules governing “wash sales” (for an Authorized Participant who does not mark-to-market their holdings), or on the basis that there has been no significant change in economic position. Persons exchanging securities should consult their own tax advisor with respect to whether wash sale rules apply and when a loss might be deductible.

Any capital gain or loss realized upon redemption of Creation Units is generally treated as long-term capital gain or loss if Shares have been held for more than one year and as a short-term capital gain or loss if Shares have been held for one year or less.

The information in this section “Tax Information” is not intended or written to be used as tax advice. Because everyone’s tax situation is unique, you should consult your tax professional about federal, state, local or foreign tax consequences before making an investment in the Fund.

Financial Highlights

The financial highlights table is intended to help you understand the Fund’s financial performance since the commencement of operations on February 10, 2022. Certain information reflects financial results for a single Fund share. The total returns in the tables represent the rate that an investor would have earned (or lost) on an investment in a Fund (assuming reinvestment of all dividends and distributions). This information has been derived from the financial statements audited by Cohen & Company, Ltd., an Independent Registered Public Accounting firm, whose report, along with each Fund’s financial statements, are included in the Fund’s September 30, 2022 annual report, which is available at no charge upon request.

Build Bond Innovation ETF

Financial Highlights
For a Share Outstanding Throughout the Period Presented

(a)The Fund commenced operations on February 10, 2022

(b)Calculated using average shares outstanding, during the period.

(c)The amounts reported for a share outstanding may not accord with the change in the aggregate gains and losses in securities for the fiscal period due to the timing of capital share transactions in relation to the fluctuating market values of the Fund’s underlying securities

(d)Net asset value total return is calculated assuming an initial investment made at the net asset value at the beginning of the period, reinvestment of all distributions at net asset value during the period, and redemption on the last day of the period at net asset value.

(e)Market value total return is calculated assuming an initial investment made at market value at the beginning of the period, reinvestment of all distributions at net asset value during the period and redemption on the last day of the period at market value. The market value is determined by the midpoint of the bid/ask spread at 4:00 p.m. from the NYSE Arca, Inc. Exchange. Market value returns may vary from net asset value returns.

(f)Portfolio turnover rate excludes in-kind transactions.

(g)The expenses and net investment income do not reflect expenses from underlying investments.

^Not Annualized.

+Annualized.

Fund Service Providers

Disclaimers

Shares of the Trust are not sponsored, endorsed, or promoted by the Exchange. The Exchange makes no representation or warranty, express or implied, to the owners of the Shares of the Fund. The Exchange is not responsible for, nor has it participated in, the determination of the timing of, prices of, or quantities of the Shares of the Fund to be issued, or in the determination or calculation of the equation by which the Shares are redeemable. The Exchange has no obligation or liability to owners of the Shares of the Fund in connection with the administration, marketing, or trading of the Shares of the Fund. Without limiting any of the foregoing, in no event shall the Exchange have any liability for any lost profits or indirect, punitive, special, or consequential damages even if notified of the possibility thereof.

Additional Information

This Prospectus does not contain all the information included in the Registration Statement filed with the SEC with respect to the Fund’s Shares. Information about the Fund can be reviewed on the EDGAR database at the SEC’s website (http://www.sec.gov), and copies may be obtained, after paying a duplicating fee, by electronic request at the following email address: [email protected]. These documents and other information concerning the Trust also may be inspected at 3608 West Truman Blvd., Suite 200, Jefferson City, MO 65109.

The SAI for the Fund, which has been filed with the SEC, provides more information about the Fund. The SAI is incorporated herein by reference and is legally part of this Prospectus. Additional information about the Fund’s investments will be available in the Fund’s annual and semi-annual reports to shareholders. In the Fund’s annual report, when available, you will find a discussion of the market conditions and investment strategies that significantly affected the Fund’s performance during its last fiscal year. The SAI and the Fund’s annual and semi-annual reports may be obtained without charge by writing to the Fund at c/o Foreside Fund Services, LLC, at Three Canal Plaza, Suite 100, Portland, Maine 04101 or by calling 800-617-0004.

Investment Company Act file no. 811-23732.