The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.
SUBJECT TO COMPLETION, PRELIMINARY PROSPECTUS DATED NOVEMBER 18, 2022
Prospectus [xx], 2023
 
Ticker
Symbol
Listing
Exchange
Alger Weatherbie Enduring Growth ETF
[  ]
NYSE Arca, Inc.
The Exchange-Traded Fund (“ETF”) is different from traditional ETFs.
Traditional ETFs tell the public what assets they hold each day. The ETF will not. This may create additional risks for your investment. For example:
You may have to pay more money to trade the ETF’s shares. The ETF will provide less information to traders, who tend to charge more for trades when they have less information.
The price you pay to buy ETF shares on an exchange may not match the value of the ETF’s portfolio. The same is true when you sell shares. These price differences may be greater for the ETF compared to other ETFs because the ETF provides less information to traders.
These additional risks may be even greater in bad or uncertain market conditions.
The differences between the ETF and other ETFs may also have advantages. By keeping certain information about the ETF secret, the ETF may face less risk that other traders can predict or copy their investment strategies. This may improve the ETF’s performance. If other traders are able to copy or predict the ETF’s investment strategies, however, this may hurt the ETF’s performance.
For additional information regarding the unique attributes and risks of the ETF, see the Share Price and Distributions section of this Prospectus and the Non-transparent ETF Structure Risk, Trading Issues Risk, Early Close/Trading Halt Risk, Authorized Participant/AP Representative Concentration Risk, Market Trading Risk, and Premium/Discount Risk in the Principal Risks section of this Prospectus.
(Alger is a signatory to the PRI and carbon neutral.)
The Securities and Exchange Commission has not determined if the information in this Prospectus is accurate or complete, nor has it approved or disapproved these securities. It is a criminal offense to represent otherwise.


Table of Contents
 
2
 
 
2
 
8
 
 
8
 
 
8
 
 
10
 
14
 
 
14
 
 
14
 
 
14
 
14
 
15
 
17
 
18
 
19
 
20
 
20

Prospectus 2/21
Summary Section
Alger Weatherbie Enduring Growth ETF
Investment Objective
Alger Weatherbie Enduring Growth ETF seeks long-term capital appreciation.
Fund Fees and Expenses
This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below.
Shareholder Fees
(fees paid directly from your investment)
 
Alger
Weatherbie
Enduring Growth ETF
 
None
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)
 
Alger
Weatherbie
Enduring Growth ETF
Management Fees
[__]%
Distribution and/or Service (12b-1) Fees*
None
Other Expenses
[__]%
Total Annual Fund Operating Expenses
[__]%
Fee Waiver and/or Expense Reimbursement**
([__])%
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement
[__]%
*
The Fund has adopted a Rule 12b-1 plan that allows the Fund to pay annual fees not to exceed 0.25% to the Fund’s distributor for distribution and individual shareholder services; however, the Board of Trustees has determined not to authorize payment of a 12b-1 plan fee at this time, and for at least one year from the effective date of this prospectus.
**
Fred Alger Management, LLC (the “Manager”) has contractually agreed to reimburse expenses (excluding acquired fund fees and expenses, taxes, brokerage and extraordinary expenses, to the extent applicable) through April 30, 2025 to the extent necessary to limit the total annual fund operating expenses of the Fund to [__]% of the Fund’s average daily net assets. This expense reimbursement may only be amended or terminated prior to its expiration date by agreement between the Manager and the Fund’s Board of Trustees, and will terminate automatically in the event of termination of the Investment Management Agreement. The Manager may, during the term of the contract, recoup any fees waived or expenses reimbursed pursuant to the contract; however, the Fund will only make repayments to the Manager if such repayment does not cause the Fund’s expense ratio after the repayment is taken into account, to exceed both (i) the expense cap in place at the time such amounts were waived or reimbursed, and (ii) the Fund’s current expense cap. Such recoupment is limited to two years from the date the amount is initially waived or reimbursed.
Example
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods indicated, that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. The one-year example and the period of the three-year example through April 30, 2025 are based on net operating expenses, which reflect the contractual expense limitation agreed to by the Manager. Although your actual costs may be higher or lower, based on these assumptions you would pay the following expenses if you redeemed your shares at the end of each period:
 
1 Year
3 Years
Alger Weatherbie Enduring Growth ETF
$[__]
$[__]
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 Fund 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. No portfolio turnover rate is included for the Fund because the Fund has not yet commenced operations.

Prospectus 3/21
Principal Investment Strategy
The Fund is sub-advised by Weatherbie Capital, LLC (“Weatherbie” or the “Sub-Adviser”), an affiliate of the Manager (Weatherbie and the Manager, collectively referred to as the “Manager,” where applicable).  Subject to the general supervision by the Fund’s Board of Trustees, the Manager oversees Weatherbie and evaluates its performance results. The Manager reviews portfolio performance, compliance with investment guidelines and federal securities laws, and changes in key personnel of Weatherbie. Weatherbie is primarily responsible for the day-to-day management of the Fund’s portfolio, including purchases and sales of individual securities.
The Fund invests primarily in equity securities of mid-cap growth companies with an environmental, social and governance (“ESG”) rating of medium or better, as rated by Sustainalytics, a third-party ESG rating agency (“Sustainalytics” or the “ESG Rating Agency”), at the time of purchase. Sustainalytics provides ESG ratings that measure a company’s exposure to ESG risks and how well the company is managing those risks. Using its proprietary methodology, as described below, Sustainalytics rates companies on a scale of 0 to 100, with 0 to 10 representing negligible ESG risk, 10 to 20 representing low ESG risk, 20 to 30 representing medium ESG risk, 30 to 40 representing high ESG risk, and 40 and higher representing severe ESG risk.
Under normal circumstances, 80% of companies in the Fund’s portfolio, based on net assets, will have a Sustainalytics ESG rating. The Sustainalytics ESG ratings for this portion of the portfolio will have a weighted average of 25 or better. For determining the weighted average, the Sustainalytics ESG rating of a security comprising a higher percentage of the portfolio will have a greater impact than the Sustainalytics ESG rating of a security with a lower percentage of the portfolio on the weighted average ESG rating of this portion of the portfolio. As a result, the Fund may invest in companies with Sustainalytics ESG ratings above and below 25, although the Fund will not invest in a company if, as a result, the weighted average of the applicable portion of its portfolio would exceed a Sustainalytics ESG rating of 25. In addition, the Fund will not invest in a company with a Sustainalytics ESG rating of 40 or above (i.e., severe ESG risk) at the time of purchase. If an existing portfolio holding’s ESG rating is adjusted by Sustainalytics to 40 or higher, Weatherbie will sell that portfolio holding within six months, subject to its fiduciary obligations to the Fund, although the Fund may continue to hold that investment if Sustainalytics readjusts the company’s ESG rating back to below 40 as a result of positive actions taken by the company to reduce its ESG risk rating.
Although the Fund expects to invest primarily in companies with ESG ratings provided by Sustainalytics, certain investments may not be rated by Sustainalytics. Reasons for this may be because (i) Sustainalytics does not include the company in its rating universe; and (ii) of timing differences between when the Fund may invest in a company and when, and if, that company receives an ESG rating from Sustainalytics. With respect to (ii) for example, Sustainalytics may take time to rate a particular company when it is newly publicly traded or as a result of a corporate action, such as a merger, spin-off or restructuring. The Fund may hold up to three securities totaling no more than 20% of the Fund’s net assets in securities, without a Sustainalytics ESG rating. If a company does receive an ESG rating from Sustainalytics, Weatherbie will include that company as part of the portion of the Fund’s portfolio that is required to maintain a weighted average ESG rating of 25 or better.
In effecting the Fund’s investment strategy, Weatherbie initially employs fundamental analysis to identify innovative and dynamic companies that demonstrate promising growth potential such as strong earnings growth and sound stock market values. Weatherbie then uses Sustainalytics’ ESG ratings to determine whether an identified company is an appropriate investment for the Fund, including determining the impact that the investment would have on the Sustainalytics ESG rating of the Fund’s portfolio on a weighted average basis. In selecting and monitoring investments for the Fund, Weatherbie conducts due diligence on Sustainalytics, reviews the Sustainalytics ESG ratings of existing and potential portfolio investments, and separately engages with identified companies to determine whether a company’s Sustainalytics ESG rating seems consistent with the company’s practices. As part of Weatherbie’s fundamental analysis when considering investing in a company without a Sustainalytics ESG rating, Weatherbie will consider the company’s ESG record in addition to the company’s overall growth potential.
With respect to its ESG ratings, Sustainalytics arrives at an ESG risk score for each company it rates by assessing the company’s exposure to material ESG risks and assessing how well management manages the company’s exposure to those risks. Regarding assessing exposure to material ESG risks, Sustainalytics uses a variety of criteria, which may change from time to time as part of its ratings process. The environmental criteria include, but are not limited to, climate change (carbon, energy efficiency, fines), natural resources (water stress, biodiversity), pollution and waste (air/water pollution, waste management), and environmental opportunities (clean technology, green building, renewable energy). The social criteria include, but are not limited to, human capital (labor management, development, supply chain, health and safety, employee sentiment, diversity), product liability (safety and quality, consumer satisfaction), stakeholder opposition (controversial sourcing), social opportunities (access to finance, healthcare, communications, nutrition and health, philanthropy), and board composition (diversity). The governance criteria include, but are not limited to, corporate governance (board, executive pay, ownership structure, accounting and disclosures, audit committee structure) and corporate behavior (business ethics, anti-competition strategies, corruption, lobbying, political contributions, shareholder rights). The overall Sustainalytics risk score for each company is a measure of whether or not, and how well, a company has responded to the various material ESG risks to which it is exposed.

Prospectus 4/21
In evaluating a particular company’s ESG rating, as well as the Fund’s weighted average ESG rating, the Fund relies exclusively on ratings provided by Sustainalytics. Sustainalytics periodically assesses companies for their exposure to and management of ESG risks and opportunities based on data collected from company filings, public disclosures and other sources.
For purposes of the Fund’s principal investment strategies, “mid-cap companies” are those companies that, at the time of purchase of the securities, primarily have total market capitalization within the range of (i) companies included in the Russell Midcap Growth Index, as reported by the index at the most recent quarter end, or (ii) $1 billion to $25 billion. At September 30, 2022, the companies in this index ranged from $1.4 billion to $ 46.7 billion. Because of the Fund’s long-term approach to investing, it could have a significant portion of its assets invested in securities of issuers that have appreciated beyond the market capitalization thresholds noted.
Equity securities include common or preferred stocks that are listed on U.S. exchanges.
The Fund intends to invest a substantial portion of its assets in a smaller number of issuers. Generally, the Fund will own no more than 30 holdings. As a result, the Fund is a non-diversified investment company, which means the performance results of any one position may have a greater impact on the Fund’s performance. Fund holdings may differ from this number for any reason. Such reasons may be, among others, because of extreme market volatility, such as when the Fund has entered a temporary defensive position. Additionally, the Fund may temporarily exceed the stated number of holdings when it acquires a new holding and determines that it is in the best interests of shareholders to sell an existing holding over a period of time, instead of immediately selling the entire holding.
The Fund may invest a significant portion of its assets in securities of companies conducting business within a single sector.
The Fund may sell a stock when it reaches a target price, it fails to perform as expected, or other opportunities appear more attractive.
The Fund invests in cash (and cash equivalents) when the Fund is unable to find enough attractive long-term investments to meet its investment objective, to meet redemptions and/or when the Sub-Adviser believes it is advisable to do so during times of short-term market volatility. During these times, cash (and cash equivalents) will not exceed 15% of the Fund’s assets.
The Fund is a non-diversified and non-transparent, actively managed exchange-traded fund (“ETF”) that does not seek to replicate the performance of a specified index.
The Fund operates in reliance on an exemptive order (the “Order”) from the Securities and Exchange Commission (the “SEC”), which limits the types of investments the Fund may hold to those listed in the Fund’s application for the Order. Under the terms of the Order, the Fund is permitted to invest only in exchange-traded funds, exchange-traded notes, exchange listed common stocks, exchange-traded preferred stocks, exchange-traded ADRs, exchange-traded real estate investment trusts, exchange-traded commodity pools, exchange-traded metal trusts, exchange-traded currency trusts and exchange-traded futures that trade on a U.S. exchange contemporaneously with the Fund’s shares, as well as cash and cash equivalents (which are short-term U.S. Treasury securities, government money market funds, and repurchase agreements). The Fund’s investment strategies and practices, including those listed above, are subject to these limitations.
Principal Risks
An investment in the Fund involves risks. The Fund’s share price may go down, which means you could lose money. An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. The following is a summary description of principal risks involved in investing in the Fund.
Non-Transparent ETF Structure Risk – Unlike traditional ETFs, the Fund does not provide daily disclosure of its portfolio holdings. Instead, the Fund provides a verified intraday indicative value (“VIIV”), calculated and disseminated every second throughout the trading day. The VIIV is intended to provide investors and other market participants with enough information to allow for an effective arbitrage mechanism that will attempt to keep the market price of the Fund at or close to the underlying net asset value (“NAV”) per share of the Fund. There is, however, a risk, which may increase during periods of market disruption or volatility, that market prices may vary significantly from the underlying NAV of the Fund. Similarly, because the Fund’s shares trade on the basis of a published VIIV, they may trade at a wider bid/ask spread than shares of ETFs that publish their portfolio holdings on a daily basis, especially during periods of market disruption or volatility, and therefore, may cost investors more to trade. Although the Fund seeks to benefit from keeping its portfolio information confidential, some market participants may attempt to use the VIIV to identify the Fund’s trading strategy, which if successful, could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the Fund and its shareholders.
Trading Issues Risk – Trading in Fund shares on NYSE Arca, Inc. (the “Listing Exchange”) may be halted in certain circumstances. If at any time the securities representing 10% or more of the Fund’s portfolio become subject to a trading halt or otherwise do not have readily available market quotations, the Manager will request the Listing Exchange to halt trading of the Fund. There may be other instances that require a trading halt. Specifically, if there is a discrepancy of sufficient magnitude in the Fund’s VIIV

Prospectus 5/21
calculation, the Manager will request the Listing Exchange to halt trading. This “circuit breaker” is designed to prevent the VIIV from reflecting outlier prices.
Early Close/Trading Halt Risk – An exchange or market may close early or issue trading halts on portfolio securities. In times of market volatility, if trading is halted in some of the securities that the Fund holds, there may be a disconnect between the market price of those securities and the market price of the Fund. If at any time the securities representing 10% or more of the Fund’s portfolio become subject to a trading halt or otherwise do not have readily available market quotations, the Manager will request the Listing Exchange to halt trading on the Fund, meaning that investors would not be able to trade their shares. During any such trading halt, the VIIV would continue to be calculated and disseminated. Trading halts may have a greater impact on the Fund than traditional ETFs because of its lack of transparency. Additionally, the Manager monitors the bid and ask quotations for the securities the Fund holds, and, if it determines that such a security does not have readily available market quotations (such as during an extended trading halt), it will post that fact and the name and weighting of that security in the Fund’s VIIV calculation on the Fund’s web site. This information should permit market participants to calculate the effect of that security on the VIIV calculation, determine their own fair value of the disclosed portfolio security, and better judge the accuracy of that day’s VIIV for the Fund. An extended trading halt in a portfolio security could exacerbate discrepancies between the VIIV and the Fund’s NAV.
Authorized Participant/ AP Representative Concentration Risk – The creation and redemption process for the Fund occurs through a confidential brokerage account (“Confidential Account”) with an agent, called an “AP Representative,” on behalf of authorized participants who have entered into agreements with the Fund’s distributor (“Authorized Participants”). Each day, the AP Representative will be given the names and quantities of the securities to be deposited, in the case of a creation, or redeemed, in the case of a redemption (a “Basket”), allowing the AP Representative to buy and sell positions in the portfolio securities to permit creations or redemptions on the Authorized Participant’s behalf, without disclosing the information to the Authorized Participant. The Fund may have a limited number of institutions that act as Authorized Participants and AP Representatives, none of which are obligated to engage in creation or redemption transactions. To the extent that these institutions exit the business or are unable to proceed with creation and/or redemption orders with respect to the Fund and no other Authorized Participant is able to step forward to process creation and/or redemption orders, Fund shares may trade at a discount to NAV and possibly face trading halts and/or delisting. This risk may be more pronounced in volatile markets, potentially where there are significant redemptions in ETFs generally. The fact that the Fund is offering a novel and unique structure may result in fewer entities willing to act as Authorized Participants and AP Representatives. During times of market stress, Authorized Participants may be more likely to step away from this type of ETF than a traditional ETF.
Market Trading Risk – The Fund faces numerous market trading risks, including disruptions to creations and redemptions, the existence of extreme market volatility, or potential lack of an active trading market for shares that may result in shares trading at a significant premium or discount to NAV and/or in a reduced liquidity of the Funds’ shares. During such periods, shareholders may be unable to sell their shares, or may incur significant losses when selling shares.
Premium/Discount Risk – Shares of the Fund are listed for trading on the Listing Exchange and are bought and sold in the secondary market at market prices that may differ from their most recent NAV. The market value of the Fund’s shares will fluctuate, in some cases materially, in response to changes in the Fund’s NAV, the intraday value of the Fund’s holdings, and the relative supply and demand for the Fund’s shares on the Listing Exchange. Although the Fund is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the Fund at or close to the Fund’s NAV, there is a risk (which may increase during periods of market disruption or volatility) that market prices for Fund shares will vary significantly from the Fund’s NAV. This risk may be greater for the Fund than for traditional ETFs that disclose their full portfolio holdings on a daily basis because the publication of the VIIV does not provide the same level of transparency as the publication of the full portfolio by a fully transparent active ETF. This could cause the Fund’s shares to have wider bid/ask spreads and larger premiums/discounts than fully transparent ETFs using the same investment strategies. During such periods, you may be unable to sell your shares or may incur significant losses if you sell your shares. There are various methods by which investors can purchase and sell shares and various types of orders that may be placed. Investors should consult their financial intermediary before purchasing or selling shares of the Fund. 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. The Fund cannot predict whether shares will trade above (premium), below (discount) or at NAV.
Investment Risk – An investment in the Fund is subject to investment risk, including the possible loss of the entire principal amount that you invest.
Market Risk – Your investment in Fund shares represents an indirect investment in the securities owned by the Fund. The value of these securities, like other investments, may move up or down, sometimes rapidly and unpredictably. Local, regional or global events such as environmental or natural disasters, war, terrorism, pandemics, outbreaks of infectious diseases, and similar public health threats, recessions, or other events could have a significant impact on the Fund and its investments.
Equity Securities Risk – As with any fund that invests in stocks, your investment will fluctuate in value, and the loss of your investment is a risk of investing. The Fund’s price per share will fluctuate due to changes in the market prices of its investments.

Prospectus 6/21
Also, the Fund’s investments may not grow as fast as the rate of inflation and stocks tend to be more volatile than some other investments you could make, such as bonds.
Environmental, Social and/or Governance Sustainability-Related Securities Risk – The Sub-Adviser’s use of an ESG Rating Agency to implement the Fund’s investment strategy may result in the selection or exclusion of securities of certain issuers in and from the Fund’s portfolio for reasons other than financial performance, and carries the risk that the Fund’s investment returns may underperform funds that do not utilize an ESG Rating Agency or employ another type of ESG investment strategy. The application of this strategy may affect the Fund’s investment exposure to certain companies, sectors, regions, countries or types of investments, which could negatively impact the Fund’s performance depending on whether such investments are in or out of favor. In evaluating a particular issuer’s ESG rating, as well as the Fund’s weighted average ESG rating, the Sub-Adviser relies exclusively on the ESG Rating Agency and, therefore, is dependent upon information and data from the ESG Rating Agency that may be incomplete or inaccurate, or that may present conflicting information and data with respect to an issuer than other third party ESG data providers utilized throughout the industry. Determining a company’s ESG rating is inherently subjective and the ESG Rating Agency’s assessment of a company, based on the ESG Rating Agency’s proprietary methodology may differ from that of other third party ESG rating agencies, other funds, or an investor. As a result, the Fund may invest in companies that do not reflect the beliefs or values of any particular investor and may not be deemed to exhibit positive or favorable ESG characteristics if different metrics or ESG rating agencies were used to evaluate them. ESG standards differ by region and industry, and a company’s ESG practices or the ESG Rating Agency’s assessment of a company’s ESG practices may change over time.
Small Number of Holdings Risk – Under normal circumstances, the Fund invests in a small number of issuers. Therefore, the Fund’s performance may be more vulnerable to changes in the market value of a single issuer and more susceptible to risks associated with a single economic, political, or regulatory occurrence than a fund that has a higher number of holdings.
Mid Cap Securities Risk – There may be greater risk in investing in medium-capitalization companies rather than larger, more established companies due to such factors as inexperienced management and limited product lines or financial resources. It may also be difficult or impossible to liquidate a security position at a time and price acceptable to the Fund because of the potentially less frequent trading of stocks of smaller market capitalization.
Growth Stocks Risk – Prices of growth stocks tend to be higher in relation to their companies’ earnings and may be more sensitive to market, political and economic developments than other stocks, making their prices more volatile. An investment in the Fund may be better suited to investors who seek long-term capital growth and can tolerate fluctuations in their investment’s value.
Sector Risk – The Fund may have a significant portion of its assets invested in securities of companies conducting business within a single sector. Companies in the same sector may be similarly affected by economic, regulatory, political or market events or conditions, which may make the Fund more vulnerable to unfavorable developments in that sector than a fund that has a more diversified portfolio. Generally, the more broadly the Fund invests, the more it spreads risk and potentially reduces the risks of loss and volatility.
Non-Diversification Risk – The Fund is a non-diversified investment company. Therefore, the Fund’s performance may be more vulnerable to changes in the market value of a single issuer and more susceptible to risks associated with a single economic, political, or regulatory occurrence than a fund that has a diversified portfolio.
Portfolio Turnover (Active Trading) Risk – Because the Fund may engage in active trading of portfolio securities, it may incur increased transaction costs and brokerage commissions, both of which can lower the actual return on an investment. Active trading may also increase short-term gains and losses, which may affect the taxes a shareholder has to pay.
Cash Position Risk – At times, the Fund may hold a large cash position, which may underperform relative to equity securities.
Performance
No performance information will be presented until the Fund has been in operation for a full calendar year. Annual performance information gives some indication of the risks of an investment in the Fund by comparing the Fund’s performance with a broad measure of market performance. The Fund’s past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. Updated performance information is available on the Fund’s website at www.alger.com.
Management
Investment Manager
Portfolio Managers Jointly and Primarily Responsible for Day-to-Day Management of
the Fund
Fred Alger Management, LLC
 

Prospectus 7/21
Sub-Adviser
 
Weatherbie Capital, LLC*
H. George Dai, Ph.D.
Chief Investment Officer and Senior Portfolio Manager
Since Inception
Joshua D. Bennett, CFA
Chief Operating Officer and Senior Portfolio Manager
Since Inception
*
Weatherbie, an affiliate of the Manager, sub-advises the Fund subject to the Manager’s supervision and approval.
When a Fund is co-managed, the responsibilities of such portfolio managers may be shared, divided or otherwise assigned based on various factors including, but not limited to, level of Fund assets to be managed, their overall experience, their sector expertise, and such other factors as the Manager believes is most efficient and effective. In all cases, each portfolio manager collaborates with the other portfolio manager(s) and analysts to develop overall strategy, outlook, and themes, which impact industry, sector and security allocations in the Fund. Responsibilities amongst portfolio managers may be fully or partially allocated to one of the portfolio managers for the purposes of day-to-day portfolio management and stock selection, implementation of trades, strategic and performance oversight, risk management, or oversight of guidelines; whether externally driven or internally developed by the Manager.
Shareholder Information
Purchasing and Redeeming Fund Shares
Individual Fund shares may only be bought and sold in the secondary market through a broker or dealer at a market price. 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”). Once the Fund commences operations, recent information, including information on the Fund’s NAV, market price, premiums and discounts, and bid-ask spreads, will be available on the Fund’s website at www.alger.com.
Tax Information
The Fund’s distributions may be taxable as ordinary income or capital gains. The Fund is actively managed, and as a result, investors may receive capital gains distributions annually.
Payments to Broker-Dealers and Other Financial Intermediaries
If you purchase the Fund through a broker-dealer or other financial intermediary (such as a bank), the Manager or the Fund’s distributor may pay the intermediary for the sale of Fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your financial professional to recommend the Fund over another investment. Ask your financial professional or visit your financial intermediary’s website for more information.

Prospectus 8/21
Investment Objective, Principal Investment Strategies and Related Risks
The investment objective, principal strategy and primary risks of the Fund are discussed individually in the Fund’s Summary Section in this Prospectus. The Fund’s investment objective is a non-fundamental investment policy and may be changed by the Board of Trustees (the “Board”) without shareholder approval. The Fund will provide its shareholders with at least 60 days’ prior notice of any change to its investment objective. The Fund may, from time to time, take temporary defensive positions that are inconsistent with the Fund’s principal investment strategies in attempting to respond to adverse market, economic, political, or other conditions. The Fund may not achieve its investment objective while in a temporary defensive position.
The Fund is a non-diversified and non-transparent, actively managed ETF that does not seek to replicate the performance of a specified index. The Fund’s past performance (before and after taxes) is not necessarily an indication of how it will perform in the future.
Additional Information About the Fund’s Investment Strategies and Investments
Investment Objective
Alger Weatherbie Enduring Growth Fund seeks long-term capital appreciation.
Principal Investment Strategies
The following are the Fund’s investment process and principal investment strategies. The Fund may invest in other securities that are not its principal strategy, and such strategies and related risks are described in more detail in the Fund’s Statement of Additional Information (“SAI”).
The Fund invests primarily in equity securities. The Fund’s investments in equity securities are primarily in common or preferred stocks, including convertible preferred securities, and American Depositary Receipts. The Fund invests in companies whose securities are traded on a national securities exchange registered with the Securities and Exchange Commission (the “SEC”), and trade contemporaneously with the Fund’s shares. As noted in the Fund’s Summary Section in this Prospectus, the Fund operates in reliance on an exemptive order (the “Order”) from the SEC, which limits the types of investments the Fund may hold to those listed in the Fund’s application for the Order.
The Fund is sub-advised by Weatherbie Capital, LLC (“Weatherbie” or the “Sub-Adviser”), an affiliate of the Manager (Weatherbie and the Manager, collectively referred to as the “Manager,” where applicable).  Subject to the general supervision by the Board, the Manager oversees Weatherbie and evaluates its performance results. The Manager reviews portfolio performance, compliance with investment guidelines and federal securities laws, and changes in key personnel of Weatherbie. Weatherbie is primarily responsible for the day-to-day management of the Fund’s portfolio, including purchases and sales of individual securities.
The Fund must take into account a company’s market capitalization when considering it for investment. The market capitalization of a company is its price per share multiplied by its number of outstanding shares.
Alger Weatherbie Enduring Growth Fund
The Fund invests primarily in equity securities of mid-cap growth companies with an environmental, social and governance (“ESG”) rating of medium or better, as rated by Sustainalytics, a third-party ESG rating agency (“Sustainalytics” or the “ESG Rating Agency”), at the time of purchase. Sustainalytics provides ESG ratings that measure a company’s exposure to ESG risks and how well the company is managing those risks. Using its proprietary methodology, as described below, Sustainalytics rates companies on a scale of 0 to 100, with 0 to 10 representing negligible ESG risk, 10 to 20 representing low ESG risk, 20 to 30 representing medium ESG risk, 30 to 40 representing high ESG risk, and 40 and higher representing severe ESG risk.
Under normal circumstances, 80% of companies in the Fund’s portfolio, based on net assets, will have a Sustainalytics ESG rating. The Sustainalytics ESG ratings for this portion of the portfolio will have a weighted average of 25 or better. For determining the weighted average (as summarized below), the Sustainalytics ESG rating of a security comprising a higher percentage of the portfolio will have a greater impact than the Sustainalytics ESG rating of a security with a lower percentage of the portfolio on the weighted average ESG rating of this portion of the portfolio. As a result, the Fund may invest in companies with Sustainalytics ESG ratings above and below 25, although the Fund will not invest in a company if, as a result, the weighted average of the applicable portion of its portfolio would exceed a Sustainalytics ESG rating of 25. In addition, the Fund will not invest in a company with a Sustainalytics ESG rating of 40 or above (i.e., severe ESG risk) at the time of purchase. If an existing portfolio holding’s ESG rating is adjusted by Sustainalytics to 40 or higher, Weatherbie will sell that portfolio holding within six months, subject to its fiduciary obligations to the Fund, although the Fund may continue to hold that investment if Sustainalytics readjusts the company’s ESG rating back to below 40 as a result of positive actions taken by the company to reduce its ESG risk rating.
The weighted average is calculated by multiplying each portfolio holding’s weight by its Sustainalytics ESG rating, then adding each total together to determine the Fund’s weighted ESG rating. For example, to determine the weighted average of (i) a security

Prospectus 9/21
with an ESG rating of 10 comprising 50% of the Fund’s portfolio, (ii) a security with an ESG rating of 20 comprising 35% of the Fund’s portfolio, and (iii) a security with an ESG rating of 30 comprising 15% of the Fund’s portfolio: first, 10 is multiplied by 50% (for a total of 5), 20 is multiplied by 35% (for a total of 7), and 30 is multiplied by 15% (for a total of 4.5). Then, 5, 7 and 4.5 are added together for a total weighted average ESG rating of 16.5. If a simple average was used, rather than weighted average, the average ESG rating of these three companies would be 20. The previous calculation is only an example made to illustrate how the Fund’s weighted average ESG rating is calculated. The Fund’s actual portfolio will contain more securities and will consist of securities with ESG ratings that are likely to differ from those shown in the example.
Although the Fund expects to invest primarily in companies with ESG ratings provided by Sustainalytics, certain investments may not be rated by Sustainalytics. Reasons for this may be because (i) Sustainalytics does not include the company in its rating universe; and (ii) of timing differences between when the Fund may invest in a company and when, and if, that company receives an ESG rating from Sustainalytics. With respect to (ii) for example, Sustainalytics may take time to rate a particular company when it is newly publicly traded or as a result of a corporate action, such as a merger, spin-off or restructuring. The Fund may hold up to three securities totaling no more than 20% of the Fund’s net assets in securities, without a Sustainalytics ESG rating. If a company does receive an ESG rating from Sustainalytics, Weatherbie will include that company as part of the portion of the Fund’s portfolio that is required to maintain a weighted average ESG rating of 25 or better.
In effecting the Fund’s investment strategy, Weatherbie initially employs fundamental analysis to identify innovative and dynamic companies that demonstrate promising growth potential such as strong earnings growth and sound stock market values. Weatherbie then uses Sustainalytics’ ESG ratings to determine whether an identified company is an appropriate investment for the Fund, including determining the impact that the investment would have on the Sustainalytics ESG rating of the Fund’s portfolio on a weighted average basis. In selecting and monitoring investments for the Fund, Weatherbie conducts due diligence on Sustainalytics, reviews the Sustainalytics ESG ratings of existing and potential portfolio investments, and separately engages with identified companies to determine whether a company’s Sustainalytics ESG rating seems consistent with the company’s practices. As part of Weatherbie’s fundamental analysis when considering investing in a company without a Sustainalytics ESG rating, Weatherbie will consider the company’s ESG record in addition to the company’s overall growth potential.
With respect to its ESG ratings, Sustainalytics arrives at an ESG risk score for each company it rates by assessing the company’s exposure to material ESG risks and assessing how well management manages the company’s exposure to those risks. Regarding assessing exposure to material ESG risks, Sustainalytics uses a variety of criteria, which may change from time to time as part of its ratings process. The environmental criteria include, but are not limited to, climate change (carbon, energy efficiency, fines), natural resources (water stress, biodiversity), pollution and waste (air/water pollution, waste management), and environmental opportunities (clean technology, green building, renewable energy). The social criteria include, but are not limited to, human capital (labor management, development, supply chain, health and safety, employee sentiment, diversity), product liability (safety and quality, consumer satisfaction), stakeholder opposition (controversial sourcing), social opportunities (access to finance, healthcare, communications, nutrition and health, philanthropy), and board composition (diversity). The governance criteria include, but are not limited to, corporate governance (board, executive pay, ownership structure, accounting and disclosures, audit committee structure) and corporate behavior (business ethics, anti-competition strategies, corruption, lobbying, political contributions, shareholder rights). The overall Sustainalytics risk score for each company is a measure of whether or not, and how well, a company has responded to the various material ESG risks to which it is exposed.
In evaluating a particular company’s ESG rating, as well as the Fund’s weighted average ESG rating, the Fund relies exclusively on ratings provided by Sustainalytics. Sustainalytics periodically assesses companies for their exposure to and management of ESG risks and opportunities based on data collected from company filings, public disclosures and other sources.
For purposes of the Fund’s principal investment strategies, “mid-cap companies” are those companies that, at the time of purchase of the securities, primarily have total market capitalization within the range of (i) companies included in the Russell Midcap Growth Index, as reported by the index at the most recent quarter end, or (ii) $1 billion to $25 billion. At September 30, 2022, the companies in this index ranged from $1.4 billion to $ 46.7 billion. Because of the Fund’s long-term approach to investing, it could have a significant portion of its assets invested in securities of issuers that have appreciated beyond the market capitalization thresholds noted.
Equity securities include common or preferred stocks that are listed on U.S. exchanges.
The Fund intends to invest a substantial portion of its assets in a smaller number of issuers. Generally, the Fund will own no more than 30 holdings. As a result, the Fund is a non-diversified investment company, which means the performance results of any one position may have a greater impact on the Fund’s performance. Fund holdings may differ from this number for any reason. Such reasons may be, among others, because of extreme market volatility, such as when the Fund has entered a temporary defensive position. Additionally, the Fund may temporarily exceed the stated number of holdings when it acquires a new holding and determines that it is in the best interests of shareholders to sell an existing holding over a period of time, instead of immediately selling the entire holding.
The Fund may invest a significant portion of its assets in securities of companies conducting business within a single sector.

Prospectus 10/21
The Fund may sell a stock when it reaches a target price, it fails to perform as expected, or other opportunities appear more attractive. As a result, the Fund may engage in active trading of portfolio securities.
The Fund invests in cash (and cash equivalents) when the Fund is unable to find enough attractive long-term investments to meet its investment objective, to meet redemptions and/or when the Sub-Adviser believes it is advisable to do so during times of short-term market volatility. During these times, cash (and cash equivalents) will not exceed 15% of the Fund’s assets.
The Fund is a non-transparent, actively managed ETF that does not seek to replicate the performance of a specified index.
The Fund operates in reliance on the Order, which limits the types of investments the Fund may hold to those listed in the Fund’s application for the Order. Under the terms of the Order, the Fund is permitted to invest only in ETFs, exchange-traded notes, exchange listed common stocks, exchange-traded preferred stocks, exchange-traded ADRs, exchange-traded real estate investment trusts, exchange-traded commodity pools, exchange-traded metal trusts, exchange-traded currency trusts and exchange-traded futures that trade on a U.S. exchange contemporaneously with the Fund’s shares, as well as cash and cash equivalents (which are short-term U.S. Treasury securities, government money market funds, and repurchase agreements). The Fund’s investment strategies and practices, including those listed above, are subject to these limitations.
Principal Risks
This section contains a discussion of the general risks of investing in the Fund. The “Investment Strategies and Policies” section in the SAI also includes more information about the Fund and its investments and the related risks. An investment in the Fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or by any bank or governmental agency. As with any fund, an investment in the Fund involves risks.
Non-Transparent ETF Structure Risk
Unlike most ETFs, the Fund does not provide daily disclosure of its portfolio holdings. Instead, the Fund provides a VIIV, calculated and disseminated every second throughout the trading day. The VIIV is intended to provide investors and other market participants with enough information to allow for an effective arbitrage mechanism that will attempt to keep the market price of the Fund at or close to the underlying NAV per share of the Fund. There is, however, a risk that shares of the Fund may trade at a wider bid/ask spread than ETFs that publish their portfolio holdings daily, especially during periods of market disruption or volatility, and therefore, may cost investors more to trade. There is also a risk that the market price may vary significantly from the VIIV and, thus, the underlying value of the Fund. There is also a risk that, despite not disclosing the portfolio holdings each day, some market participants may seek to use publicly available information, including the VIIV, to identify the Fund’s investment strategies and engage in certain predatory trading practices that may have the potential to harm the Fund.
Trading Issues Risk
Trading in Fund shares on the Listing Exchange may be halted in certain circumstances. If at any time the securities representing 10% or more of the Fund’s portfolio become subject to a trading halt or otherwise do not have readily available market quotations, the Manager will request the Listing Exchange to halt trading of the Fund. There may be other instances that require a trading halt specific to the VIIV. If there is a discrepancy of sufficient magnitude in the Fund’s VIIV calculation, the Manager will request the Listing Exchange to halt trading. This “circuit breaker” is designed to prevent the VIIV from reflecting outlier prices.
Early Close/Trading Halt Risk
An exchange or market may close early or issue trading halts on portfolio securities. In times of market volatility, if trading is halted in some of the securities that the Fund holds, there may be a disconnect between the market price of those securities and the market price of the Fund. If at any time the securities representing 10% or more of the Fund’s portfolio become subject to a trading halt or otherwise do not have readily available market quotations, the Manager will request the Listing Exchange to halt trading on the Fund, meaning that investors would not be able to trade their shares. During any such trading halt, the VIIV would continue to be calculated and disseminated. Trading halts may have a greater impact on the Fund than traditional ETFs because of its lack of transparency. Additionally, the Manager monitors the bid and ask quotations for the securities the Fund holds, and, if it determines that such a security does not have readily available market quotations (such as during an extended trading halt), it will post that fact and the name and weighting of that security in the Fund’s VIIV calculation on the Fund’s web site. This information should permit market participants to calculate the effect of that security on the VIIV calculation, determine their own fair value of the disclosed portfolio security, and better judge the accuracy of that day’s VIIV for the Fund. An extended trading halt in a portfolio security could exacerbate discrepancies between the VIIV and the Fund’s NAV.

Prospectus 11/21
Authorized Participant / AP Representative Concentration Risk
The creation and redemption process for the Fund occurs through a Confidential Account with an AP Representative on behalf of an Authorized Participant. Each day, the AP Representative will be given the Basket, allowing the AP Representative to buy and sell positions in the portfolio securities to permit creations or redemptions on the Authorized Participant’s behalf, without disclosing the information to the Authorized Participant. The Fund may have a limited number of institutions that act as Authorized Participants and AP Representatives, none of which are obligated to engage in creation or redemption transactions. To the extent that these institutions exit the business or are unable to proceed with creation and/or redemption orders with respect to the Fund and no other Authorized Participant is able to step forward to process creation and/or redemption orders, Fund shares may trade at a discount to NAV and possibly face trading halts and/or delisting. This risk may be more pronounced in volatile markets, potentially where there are significant redemptions in ETFs generally. The fact that the Fund is offering a novel and unique structure may result in fewer entities willing to act as Authorized Participants and AP Representatives. During times of market stress, Authorized Participants may be more likely to step away from this type of ETF than a traditional ETF.
Market Trading Risk
Although shares of the Fund are listed for trading on one or more stock exchanges, there can be no assurance that an active trading market for such shares will develop or be maintained. There are no obligations of market makers to make a market in the Fund’s shares or of an AP to submit purchase or redemption orders for shares at NAV in aggregations of a specified number of shares (a “Creation Unit”). Decisions by market makers or APs to reduce their role or step away from these activities in times of market stress could inhibit the effectiveness of the arbitrage process in maintaining the relationship between the underlying value of the Fund’s portfolio securities and the Fund’s market price. This reduced effectiveness could result in Fund shares trading at a premium or discount to its NAV. For at least the first three years after launch of the Fund, the Board will promptly meet if, for 30 or more days in any quarter or 15 days in a row, the absolute difference between either the market closing price or the bid/ask price, on one hand, and NAV, on the other, exceeds 1.00% or the bid/ask spread exceeds 1.00%. In such a circumstance, the Board will consider the continuing viability of the Fund, whether shareholders are being harmed, and what, if any, action would be appropriate to among other things, narrow the premium/discount or spread, as applicable. The Board will then decide whether to take any such action. Potential actions may include, but are not limited to, changing lead market makers, listing a Fund on a different exchange, changing the size of Creation Units, changing the Fund’s investment objective or strategy, and liquidating the Fund.
Secondary market trading in Fund shares may be halted by a stock exchange because of market conditions or other reasons and may be subject to trading halts caused by extraordinary market volatility pursuant to “circuit breaker” rules on the stock exchange or market. There can be no assurance that the requirements necessary to maintain the listing or trading of Fund shares will continue to be met or will remain unchanged. In addition, during a “flash crash,” the market prices of the Fund’s shares may decline suddenly and significantly. Such a decline may not reflect the performance of the portfolio securities held by the Fund. Flash crashes may cause APs and other market makers to limit or cease trading in the Fund’s shares for temporary or longer periods. Shareholders could suffer significant losses to the extent that they sell Fund shares at these temporarily low market prices.
When buying or selling shares of the Fund through a broker, you may incur a brokerage commission or other charges determined by your broker. In addition, you may incur the cost of the “spread,” that is, any difference between the bid price and the ask price. The spread varies over time for shares of the Fund based on the Fund’s trading volume and market liquidity and is generally lower if the Fund has a lot of trading volume and market liquidity, and higher if the Fund has little trading volume and market liquidity. During times of market stress, spreads may widen causing investors to pay more.
Premium/Discount Risk
Shares of the Fund are listed for trading on the Listing Exchange and are bought and sold in the secondary market at market prices that may differ from its most recent NAV. The market value of the Fund’s shares will fluctuate, in some cases materially, in response to changes in the Fund’s NAV, the intraday value of the Fund’s holdings, and the relative supply and demand for the Fund’s shares on the Listing Exchange. Although the Fund is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the Fund at or close to the Fund’s NAV, there is a risk (which may increase during periods of market disruption or volatility) that market prices for Fund shares will vary significantly from the Fund’s NAV. This risk may be greater for the Fund than for traditional ETFs that disclose their full portfolio holdings on a daily basis because the publication of the VIIV does not provide the same level of transparency as the publication of the full portfolio by a fully transparent active ETF. This could cause the Fund’s shares to have wider bid/ask spread and larger premiums/discount than fully transparent ETFs using the same investment strategies. During such periods, you may be unable to sell your shares or may incur significant losses if you sell your shares. There are various methods by which investors can purchase and sell shares and various types of orders that may be placed. Investors should consult their financial intermediary before purchasing or selling shares of the Fund. 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. The Fund cannot predict whether shares will trade above (premium), below (discount) or at NAV.

Prospectus 12/21
Investment Risk
An investment in the Fund is subject to investment risk, including the possible loss of the entire principal amount that you invest.
Market Risk
Your investment in Fund shares represents an indirect investment in the securities owned by the Fund. The value of these securities, like other investments, may move up or down, sometimes rapidly and unpredictably. Local, regional or global events such as environmental or natural disasters, war, terrorism, pandemics, outbreaks of infectious diseases, and similar public health threats, recessions, or other events could have a significant impact on the Fund and its investments.
Equity Securities Risk
As with any fund that invests in stocks, your investment will fluctuate in value, and the loss of your investment is a risk of investing. The Fund’s price per share will fluctuate due to changes in the market prices of its investments. Because stock markets tend to move in cycles, stock prices overall may decline. A particular stock’s market value may decline as a result of general market conditions that are not related to the issuing company (e.g., adverse economic conditions or investor sentiment) or due to factors that affect the particular company (e.g., management performance or factors affecting the industry). Also, the Fund’s investments may not grow as fast as the rate of inflation and stocks tend to be more volatile than some other investments you could make, such as bonds.
Environmental, Social and/or Governance Sustainability-Related Securities Risk
The Sub-Adviser’s use of an ESG Rating Agency to implement the Fund’s investment strategy may result in the selection or exclusion of securities of certain issuers in and from the Fund’s portfolio for reasons other than financial performance, and carries the risk that the Fund’s investment returns may underperform funds that do not utilize an ESG Rating Agency or employ another type of ESG investment strategy. The application of this strategy may affect the Fund’s investment exposure to certain companies, sectors, regions, countries or types of investments, which could negatively impact the Fund’s performance depending on whether such investments are in or out of favor. In evaluating a particular issuer’s ESG rating, as well as the Fund’s weighted average ESG rating, the Sub-Adviser relies exclusively on the ESG Rating Agency and, therefore, is dependent upon information and data from the ESG Rating Agency that may be incomplete or inaccurate, or that may present conflicting information and data with respect to an issuer than other third party ESG data providers utilized throughout the industry. Determining a company’s ESG rating is inherently subjective and the ESG Rating Agency’s assessment of a company, based on the ESG Rating Agency’s proprietary methodology may differ from that of other third party ESG rating agencies, other funds, or an investor. As a result, the Fund may invest in companies that do not reflect the beliefs or values of any particular investor and may not be deemed to exhibit positive or favorable ESG characteristics if different metrics or ESG rating agencies were used to evaluate them. ESG standards differ by region and industry, and a company’s ESG practices or the ESG Rating Agency’s assessment of a company’s ESG practices may change over time.
Small Number of Holdings Risk
The Fund’s performance may be more vulnerable to changes in the market value of a single issuer and more susceptible to risks associated with a single economic, political, or regulatory occurrence than a fund that has a higher number of holdings. At times, the performance of shares of particular companies will lag the performance of other sectors or the market as a whole. This risk is magnified when a fund has a small number of holdings. Generally, the more broadly a fund invests, the more it spreads its risks and potentially reduces the risk of loss and volatility.
Mid Cap Securities Risk
There may be greater risk in investing in medium-capitalization companies rather than larger, more established companies due to such factors as inexperienced management and limited product lines or financial resources. It may also be difficult or impossible to liquidate a security position at a time and price acceptable to the Fund because of the potentially less frequent trading of stocks of smaller market capitalization.
Growth Stocks Risk
Prices of growth stocks tend to be higher in relation to their companies’ earnings and may be more sensitive to market, political and economic developments than other stocks, making their prices more volatile. An investment in the Fund may be better suited to investors who seek long-term capital growth and can tolerate fluctuations in their investment’s value. Expected growth may not be realized.

Prospectus 13/21
Sector Risk
The Fund may have a significant portion of its assets invested in securities of companies conducting business within a single sector. Companies in the same sector may be similarly affected by economic, regulatory, political or market events or conditions, which may make the Fund more vulnerable to unfavorable developments in that sector than a fund that has a more diversified portfolio. Generally, the more broadly the Fund invests, the more it spreads risk and potentially reduces the risks of loss and volatility.
Non-Diversification Risk
The Fund is a non-diversified investment company. As such, the Fund can invest in fewer individual companies than a diversified investment company. As a result, the Fund’s performance may be more vulnerable to changes in the market value of a single issuer and more susceptible to risks associated with a single economic, political, or regulatory occurrence than a fund that has a diversified portfolio. This risk is magnified compared to a fund that invests more broadly.
Portfolio Turnover (Active Trading) Risk
If the Fund engages in active trading of portfolio securities, it may incur increased transaction costs and brokerage commissions, both of which can lower the actual return on an investment. Active trading may also increase short-term gains and losses, which may affect the taxes a shareholder has to pay.
Cash Position Risk
The Fund may hold a portion of its assets in cash (or cash equivalents) at any time or for an extended time and may hold a significant portion of its assets in cash (or cash equivalents) when taking a temporary defensive position, as described under “Temporary Defensive Investments.” The Sub-Adviser will determine the amount of the Fund’s assets to be held in cash (or cash equivalents) at its sole discretion, based on such factors as it may consider appropriate under the circumstances. To the extent the Fund holds assets in cash and otherwise uninvested, the ability of the Fund to meet its objective may be limited. If the Fund holds a large cash position, the Fund may under-perform relative to equity securities.
Temporary Defensive Investments Risk
In times of adverse or unstable market, economic or political conditions, the Fund may invest up to 100% of its assets in cash and cash equivalents (i.e., short-term U.S. Treasury securities, government money market funds and repurchase agreements) for temporary defensive reasons. This is to attempt to protect the Fund’s assets from a temporary, unacceptable risk of loss, rather than directly to promote the Fund’s investment objective; however, it could reduce the benefit from any upswing in the market. The Fund may not achieve its investment objective, and a Fund’s investments may not be consistent with its principal investment strategies, while in a temporary defensive position.

Prospectus 14/21
Management and Organization
Manager
Fred Alger Management, LLC
100 Pearl Street, 27th Floor
New York, NY 10004
The Manager has been an investment adviser since 1964, and manages investments totaling (at December 31, 2022) approximately $[__] billion. The Manager is responsible for providing a continuous investment program for the Fund, making decisions with respect to all purchases and sales of assets, and placing orders for the investment and reinvestment of Fund assets. The Manager also arranges for transfer agency, custody and all other services necessary for the Fund to operate. Additionally, the Manager provides certain administrative services to the Fund. These management responsibilities are subject to the supervision of the Board. A discussion of the Trustees’ basis for approving the advisory contract with respect to the Fund will be available in the Fund’s first available annual or semi-annual report to shareholders for its most recent December 31 fiscal year end or June 30 semi-annual fiscal year end. The Fund will pay the Manager a fee at the annual rate of [__]% based on a percentage of average daily net assets.
The Manager has made contractual commitments to the Fund to waive its fee and/or reimburse the Fund for expenses to the extent necessary to maintain the Fund’s total annual operating expenses at or below certain levels. This limitation does not apply to acquired fund fees and expenses, taxes, brokerage and extraordinary expenses, to the extent applicable. The agreement runs through April 30, 2025 and may only be amended or terminated prior to its expiration date by agreement between the Manager and the Board, and will terminate automatically in the event of termination of the Investment Management Agreement. Such waiver/reimbursement arrangements are as follows: Alger Weatherbie Enduring Growth ETF – [__]%. The Manager may, during the term of the contract, recoup any fees waived or expenses reimbursed pursuant to the contract; however, the Fund will only make repayments to the Manager if such repayment does not cause the Fund’s expense ratio after the repayment is taken into account, to exceed both (i) the expense cap in place at the time such amounts were waived or reimbursed, and (ii) the Fund’s current expense cap. Such recoupment is limited to two years from the date the amount is initially waived or reimbursed.
Sub-Adviser
Weatherbie Capital, LLC
265 Franklin Street, Suite 1603
Boston, Massachusetts 02110
The Manager has engaged Weatherbie, an affiliate of the Manager, to serve as the Fund’s sub-adviser under a sub-investment advisory agreement between the Manager and the Sub-Adviser. Weatherbie is a registered investment adviser formed in 1995. As of December 31, 2022, Weatherbie had approximately $[__] billion in assets under management. The Manager pays a sub-advisory fee to the Sub-Adviser out of its own resources at no additional charge to the Fund.
Portfolio Managers Jointly and Primarily Responsible for Day-to-Day Management of the Fund
Fund
Portfolio Managers
Since
Alger Weatherbie Enduring Growth Fund
H, George Dai, Ph.D.
Joshua D. Bennett, CFA
Inception
Inception
Mr. Bennett is the Chief Operating Officer of Weatherbie and a Senior Portfolio Manager. He joined Weatherbie in 2007.
Dr. Dai is the Chief Investment Officer of Weatherbie and a Senior Portfolio Manager. He joined Weatherbie in 2001.
The SAI provides additional information about the portfolio managers’ compensation, other accounts that they manage, and their ownership of securities of the Fund(s) that they manage.
Investing in the Fund
Buying and Selling Shares
Shares of the Fund may be acquired or redeemed directly from the Fund only in Creation Units or multiples thereof. Only an Authorized Participant may engage in creation and redemption transactions directly with the Fund. Once created, shares of the Fund generally trade in the secondary market in amounts less than a Creation Unit. Individual Fund shares may only be bought and sold in the secondary market through a broker or dealer at market price.

Prospectus 15/21
Shares of the Fund are listed on the Listing Exchange, a national securities exchange, for trading during the trading day. Shares can be bought and sold throughout the trading day like shares of other publicly traded companies. The Trust does not impose any minimum investment for shares of the Fund purchased on an exchange.
The Fund’s primary listing exchange is NYSE Arca, Inc., which is open for trading Monday through Friday and is closed on weekends and the following holidays: New Year’s Day, Martin Luther King, Jr. Day, Washington’s Birthday, Good Friday, Memorial Day, Juneteenth National Independence Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.
Additional information regarding the purchase and redemption of Fund shares can be found in the “Creation and Redemption of Creation Units” section of the SAI.
Book Entry
Shares of the Fund are held in book-entry form, which means that no share certificates are issued. The Depository Trust Company (“DTC”) or its nominee is the record owner of all outstanding shares of the Fund.
Investors owning shares of the Fund are beneficial owners as shown on the records of DTC or its participants. DTC serves as the securities depository for shares of the Fund. DTC 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” form.
Frequent Trading
The Board has not adopted a policy of monitoring for frequent purchases and redemptions of Fund shares. The Board believes that a frequent trading policy is unnecessary because Fund shares are listed for trading on a national securities exchange. Therefore, it is unlikely that a shareholder could take advantage of a potential arbitrage opportunity presented by a lag between a change in the value of the Fund’s portfolio securities after the close of the primary markets for the Fund’s portfolio securities and the reflection of that change in the Fund’s NAV, because the Fund generally sells and redeems its shares directly through transactions that are in-kind and/or for cash, subject to the conditions described in the “Creation and Redemption of Creation Units” section of the SAI.
Investments by Other Investment Companies
Section 12(d)(1) of the Investment Company Act of 1940, as amended (the “1940 Act”) restricts investments by investment companies in the securities of other investment companies. Registered investment companies are permitted to invest in the Fund beyond the limits set forth in Section 12(d)(1), subject to certain terms and conditions set forth in SEC rules. In order for an unaffiliated registered investment company to invest in shares of the Fund beyond the limitations of Section 12(d)(1) pursuant to Rule 12d1-4 under the 1940 Act, the registered investment company must, among other items, enter into an agreement with the Trust.
Share Price and Distributions
Share Price
The secondary market price of shares trading on the Listing Exchange is based on a current bid/ask market. The secondary market price of the Fund’s shares generally differs from the Fund’s daily NAV and, like the price of all traded securities, is affected by market forces such as supply and demand, economic conditions and other factors such as the current VIIV (described below).
Because the shares are traded in the secondary market, a broker may charge a commission to execute a transaction in shares, and an investor also may incur the cost of the spread between the price at which a dealer will buy shares and the somewhat higher price at which a dealer will sell shares.
The Verified Intraday Indicative Value
Information regarding the intraday value of shares of the Fund, also known as the VIIV, is calculated and disseminated every second throughout each trading day by the Listing Exchange or by market data vendors or other information providers. It is available on alger.com and on websites that publish updated market quotations during the trading day, like Yahoo Finance (https://finance.yahoo.com), by searching for the Fund’s ticker plus the extension IV, though some websites require their own unique extensions. The VIIV is based on the current market value of the securities in the Fund’s portfolio that day. The VIIV is intended to provide investors and other market participants with a highly correlated per share value of the underlying portfolio that can be compared to the current market price. To calculate the VIIV, the Fund employs two separate calculation engines to

Prospectus 16/21
provide two independently calculated sources of intraday indicative values (calculation engines). The Fund then uses a pricing verification agent to continuously compare the data from both the calculations engines on a real time basis. If during the process of real time price verification, the indicative values from the calculation engines differ by more than 25 basis points for 60 consecutive seconds, the pricing verification agent will alert the Manager, which will request that the Listing Exchange halt trading of the Fund’s shares until the two indicative values come back into line.
The Fund has adopted policies and procedures concerning the calculation of their VIIV. In accordance with these procedures, the portfolio used for calculating the VIIV will be the same portfolio used to calculate the Fund’s NAV for that business day. The VIIV will be calculated to the nearest penny by dividing the “Intraday Fund Value” as of the time of the calculation by the number of total Fund shares outstanding. Intraday Fund Value is the sum of the Fund’s assets (e.g., the amount of cash and cash equivalents held in the Fund’s portfolio, the current value of the securities positions in the Fund’s portfolio, plus any accrued interest, and declared but unpaid dividends) minus all accrued liabilities. All portfolio securities will be valued by the calculation engines throughout the trading day at the mid-point between the current national best bid and national best offer as disseminated by the Consolidated Quotation System or UTP Plan Securities Information Processor.
Although the VIIV is intended to provide investors with enough information to allow for an effective arbitrage mechanism that will keep the market price of the Fund at or close to the underlying NAV per share of the Fund, there is a risk (which may increase during periods of market disruption or volatility) that market prices will vary significantly from the underlying NAV of the Fund. ETFs trading on the basis of a published VIIV may trade at a wider bid/ask spread than ETFs that publish their portfolios on a daily basis, especially during periods of market disruption or volatility, and therefore, may cost investors more to trade. Although the Fund seeks to benefit from not disclosing its portfolio information daily, market participants may attempt to use the VIIV to identify the Fund’s trading strategy, which if successful, could result in such market participants engaging in certain predatory trading practices that may have the potential to harm the Fund and its shareholders.
If at any time 10% or more of the securities in the Fund’s portfolio become subject to a trading halt or otherwise do not have readily available market quotations, the Manager will ask the Listing Exchange to halt trading of the Fund. Trading halts may have a greater impact on the Fund compared to other ETFs because it is less transparent.
Net Asset Value
The value of one share is its net asset value, or “NAV.” The Fund values its financial instruments at fair value using independent dealers or pricing services under policies approved by the Board. Investments held by the Fund are valued on each day the New York Stock Exchange (the “NYSE”) is open, as of the close of the NYSE (normally 4:00 p.m. Eastern Time).
NAV of the Fund is computed by adding together the value allocable to the Fund’s investments plus cash and other assets, subtracting applicable liabilities and then dividing the result by the number of outstanding shares of the Fund.
Investments in money market funds and short-term securities held by the Fund with maturities of 60 days or less are valued at their amortized cost which does not take into account unrealized capital gains or losses and approximates market value.
Equity securities are valued at the last quoted sales price or official closing price on the primary market or exchange on which they are traded as reported by an independent pricing service. In the absence of quoted sales, such securities are valued at the bid price or, in the absence of a recent bid price, the equivalent as obtained from one or more of the major market makers for the securities to be valued.
Securities for which market quotations are not readily available are valued at fair value pursuant to procedures approved by the Board.
The Fund’s valuation techniques are generally consistent with either the market or the income approach to fair value. The market approach considers prices and other relevant information generated by market transactions involving identical or comparable assets to measure fair value. The income approach converts future amounts to a current, or discounted, single amount. These fair value measurements are determined on the basis of the value indicated by current market expectations about such future events. Because of the inherent uncertainty and often limited markets for restricted securities, the valuations assigned to such securities by the Fund may significantly differ from the valuations that would have been assigned by the Fund had there been an active market for such securities.
The Board has designated the Manager as the “Valuation Designee” to make fair value pricing determinations for portfolio securities held by the Fund. The Manager has established a Valuation Committee, comprised of representatives of the Manager and officers of the Trust to assist the Manager in carrying out its duties to the Fund as Valuation Designee. The Valuation Designee reports its fair valuation determinations and related valuation information to the Board. The Board is responsible for review and oversight of the Valuation Designee. While the meetings are held on an as-needed basis, the Valuation Committee generally meets quarterly to review and evaluate the effectiveness of the procedures for making fair value determinations. The Valuation Designee

Prospectus 17/21
considers, among other things, pricing comparisons between primary and secondary price sources, the outcome of price challenges put to the Fund’s pricing vendor, and variances between transactional prices and the previous day’s price.
The Fund’s website, which is publicly accessible at no charge, contains, on a per share basis, the prior business day’s NAV and market closing price or bid/ask price of the shares, a calculation of the premium or discount of the market closing price or bid/ask price against such NAV, and any other required information about premiums and discounts. The website also discloses the Fund’s median bid/ask spread information for the most recent 30-day period on a rolling basis.
Taxes
The following discussion is a very general summary of the federal income tax consequences of holding shares in the Fund. This summary applies only to shareholders that are U.S. residents for tax purposes and hold their shares as capital assets. This summary does not address shareholders subject to special rules, such as those who hold shares of the Fund through an IRA, 401(k) plan, or other tax-advantaged account, or non-U.S. shareholders. The discussion is limited to federal income tax matters, and does not address state, local, foreign or non-income taxes. Further information regarding tax considerations applicable to the Fund, to its qualification and taxation as a regulated investment company for U.S. federal income tax purposes, and to the acquisition, ownership, and disposition of shares in the Fund is included in the SAI. Because each shareholder’s circumstances are different and special tax rules may apply, shareholders should consult their tax advisors about federal, state, local, foreign and non-income tax considerations that may be relevant to their particular situation.
Distributions
The Fund declares and pays dividends and distributions annually. Distributions of net capital gain reported by the Fund as capital gain dividends are taxable to shareholders as long-term capital gain regardless of how long a shareholder has owned its shares. Noncorporate shareholders ordinarily pay tax at reduced rates on long-term capital gain. Distributions of investment income that the Fund reports as “qualified dividend income” may be eligible to be taxed to noncorporate shareholders at the reduced rates applicable to long-term capital gain if certain requirements are satisfied.
If the Fund’s distributions exceed current and accumulated earnings and profits, the excess will generally be considered a return of capital. A return of capital distribution generally will not be taxable but will reduce the shareholder's cost basis and will result in a higher capital gain or lower capital loss when those shares on which the distribution was received are sold. Once a shareholder's cost basis is reduced to zero, further distributions will be treated as capital gain.
A shareholder may want to avoid buying shares shortly before the Fund is about to declare a dividend or capital gain distribution because the dividend or distribution will be taxable to the shareholder even though it may economically represent a return of a portion of the shareholder’s investment.
Sale of Shares of the Fund
Capital gain or loss realized upon a sale of shares of the Fund generally is treated as long-term gain or loss if the shares have been held for more than one year. Any capital gain or loss realized upon a sale of shares of the Fund held for one year or less generally is treated as short-term gain or loss, except that any capital loss on the sale of shares held for six months or less is treated as long-term capital loss to the extent that capital gain dividends were paid with respect to those shares.
If a loss is realized on the sale of shares of the Fund, the reinvestment in additional shares of that Fund within 30 days before or after the sale generally will be subject to the “wash sale” rules, in which case the shareholder’s ability to report a loss would be deferred.
Net Investment Income Tax
A Medicare contribution tax is imposed at the rate of 3.8% on all or a portion of the net investment income of U.S. individuals with income exceeding specified thresholds, and on all or a portion of undistributed net investment income of certain estates and trusts. Net investment income for this purpose generally includes dividends and capital gain distributions paid by the Fund and gain on the redemption or sale of shares of the Fund.
Withholding
A shareholder may be subject to backup withholding at the applicable federal withholding tax rate on taxable dividends, capital gains distributions and proceeds from the sale of shares of the Fund if the shareholder fails to certify that their social security number or tax identification number is correct and that they are not subject to withholding.

Prospectus 18/21
Creation Units
An Authorized Participant that exchanges securities for Creation Units generally will recognize a gain or a loss, except as described in the subsequent paragraph. The gain or loss will be equal to the difference between the market value of the Creation Units at the time and the sum of the Authorized Participant’s aggregate basis in the securities surrendered plus the amount of cash paid for the Creation Units. An Authorized Participant that redeems Creation Units generally will recognize a gain or (subject to the subsequent sentence) loss equal to the difference between the Authorized Participant’s basis in the Creation Units and the sum of the aggregate market value of any securities received plus the amount of any cash received for the Creation Units. It is unclear whether any loss realized upon an exchange of securities for Creation Units would be immediately deductible or would be required to be deferred under the “wash sale” rules or on the basis that there has been no significant change in economic position.
Any gain or loss realized on the creation of Creation Units will be treated as capital gain or loss if the Authorized Participant holds the securities exchanged therefor as capital assets, and generally will be treated as long-term capital gain or loss if the securities exchanged for such Creation Units have been held for more than one year. Similarly, any gain or loss realized upon a redemption of Creation Units will be treated as capital gain or loss if the Authorized Participant holds the shares of the Fund comprising the Creation Units as capital assets, and otherwise will be ordinary income or loss, and generally will be treated as long-term capital gain or loss if the Fund shares comprising the Creation Units have been held for more than one year, and otherwise generally will be short-term capital gain or loss. Any capital loss realized upon a redemption of Creation Units held for six months or less will be treated as a long-term capital loss to the extent of any amounts treated as distributions to the applicable Authorized Participant of long-term capital gain with respect to the Creation Units (including any amounts credited to the Authorized Participant as undistributed capital gains).
The Fund has the right to reject an order for Creation Units if the Authorized Participant (or group of Authorized Participants) would, upon obtaining the Fund shares so ordered, own 80% or more of the outstanding shares of the Fund and if, pursuant to section 351 of the Internal Revenue Code, the Fund would have a basis in any securities different from the market value of such securities on the date of deposit. The Fund also has the right to require information necessary to determine beneficial Fund shares ownership for purposes of the 80% determination. If the Fund does issue Creation Units to an Authorized Participant (or group of Authorized Participants) that would, upon obtaining the shares so ordered, own 80% or more of the outstanding shares of the Fund, the Authorized Participant (or group of Authorized Participants) generally would not recognize gain or loss upon the exchange of securities for Creation Units.
Authorized Participants purchasing or redeeming Creation Units should consult their own tax advisors with respect to the tax treatment of any creation or redemption transaction.
Additional Information
Premium/Discount Information
The Fund’s website includes additional quantitative information that is updated on a daily basis, including, on a per share basis for the Fund, the prior business day’s NAV and market closing price or bid/ask price and a calculation of the premium or discount of the market closing price or bid/ask price against such NAV. In addition, the Fund posts a table showing the number of days the Fund’s shares traded at a premium or a discount and a line graph showing the Fund share premiums or discounts during the most recently completed calendar year and most recently completed calendar quarters since that year (or the life of the fund, if shorter). If the Fund’s premium or discount is greater than 2% for more than seven consecutive trading days, the website will contain disclosure to that effect along with a discussion of the factors that are reasonably believed to have materially contributed to the premium or discount.
Service, Distribution, and Administrative Fees
Rule 12b-1 under the 1940 Act permits investment companies that adopt a written plan to pay certain expenses associated with the distribution of their shares out of fund assets. The Board has adopted a 12b-1 plan that allows the Fund to pay annual fees not to exceed 0.25% to Fred Alger & Company, LLC (the “Distributor”), the Fund’s distributor, for distribution and individual shareholder services. However, the Board has determined not to authorize payment of a 12b-1 plan fee at this time.
Because these fees are paid out of the Fund’s assets on an ongoing basis, to the extent that a fee is authorized, over time these fees will increase the cost of your investment and may cost you more than paying other types of sales charges.
The Manager or its affiliates (collectively, “Alger”) may make payments to intermediaries for various additional services, other expenses and/or the intermediaries’ distribution of the Fund out of their profits or other available sources. Such payments may be made for one or more of the following: (1) distribution, which may include expenses incurred by intermediaries for their sales activities with respect to the Fund, such as preparing, printing and distributing sales literature and advertising materials and compensating registered representatives or other employees of such financial intermediaries for their sales activities, as well as the opportunity for the Fund to be made available by such intermediaries; (2) shareholder services, such as providing individual

Prospectus 19/21
and custom investment management services to clients of the financial intermediaries; and (3) marketing and promotional services, including business planning assistance, educating personnel about the Fund, and sponsorship of sales meetings, which may include covering costs of providing speakers, meals and other entertainment. Alger may pay partnership and/or sponsorship fees to support seminars, conferences, and other programs designed to educate intermediaries about the Fund and may cover the expenses associated with attendance at such meetings, including travel costs. Alger also may pay fees related to obtaining data regarding intermediary or financial professional activities to assist Alger with sales reporting, business intelligence, and training and education opportunities. These payments and activities are intended to provide an incentive to intermediaries to sell the Fund by educating them about the Fund and helping defray the costs associated with offering the Fund. These payments may create a conflict of interest by influencing the intermediary to recommend the Fund over another investment. Ask your salesperson or visit your financial intermediary’s website for more information. The amount of any payments described by this paragraph is determined by Alger, and all such amounts are paid out of their available assets, and not paid by you or the Fund. As a result, the total expense ratio of the Fund will not be affected by any such payments.
Other Information
Other Payments by the Fund. Certain Financial Intermediaries perform networking, sub-transfer agency, sub-accounting, recordkeeping and/or administrative services for their clients that would otherwise be performed by the transfer agent, Brown Brothers Harriman & Co. (the “Transfer Agent”). In addition to fees that the Fund may pay to a Financial Intermediary for distribution (12b-1) and shareholder servicing, and fees the Fund pays to the Transfer Agent, the Distributor, on behalf of the Fund, may enter into agreements with Financial Intermediaries pursuant to which the Fund will pay a Financial Intermediary for such services. These payments are generally based on either (1) a percentage of the average daily net assets of Fund shareholders serviced by a Financial Intermediary or (2) a fixed dollar amount for each account serviced by a Financial Intermediary. The aggregate amount of these payments may be substantial.
The Distributor may pay partnership and/or sponsorship fees to support seminars, conferences, and other programs designed to educate intermediaries about the Fund and may cover the expenses associated with attendance at such meetings, including travel costs. The Distributor also may pay fees related to obtaining data regarding Financial Intermediary or financial advisor activities to assist the Distributor with sales reporting, business intelligence, and training and education opportunities. These payments and activities are intended to provide an incentive to Financial Intermediaries to sell the Fund by educating them about the Fund and helping defray the costs associated with offering the Fund. These payments may create a conflict of interest by influencing the Financial Intermediary to recommend the Fund over another investment. Ask your salesperson or visit your Financial Intermediary’s website for more information. The amount of any payments described by this paragraph is determined by the Manager or the Distributor, and all such amounts are paid out of their available assets, and not paid by you or the Fund. As a result, the total expense ratio of the Fund will not be affected by any such payments.
Additional Compensation. From time to time the Distributor, at its expense from its own resources, may compensate Financial Intermediaries who are instrumental in effecting investments by their clients or customers in the Fund, in an amount up to 1% of the value of those investments. The Distributor may also from time to time, at its expense from its own resources, make payments to Financial Intermediaries that provide shareholder servicing, or transaction processing, with such payments structured as a percentage of gross sales, a percentage of net assets, and/or as a fixed dollar amount (the latter as a per account fee or as reimbursement for transactions processing and transmission charges). The Distributor determines whether to make any additional cash payments and the amount of any such payments in response to requests from Financial Intermediaries, based on factors the Distributor deems relevant. Factors considered by the Distributor generally include the Financial Intermediary’s reputation, ability to attract and retain assets for the Fund, expertise in distributing a particular class of shares of the Fund, entry into target markets, and/or quality of service. In addition, the Distributor may make payments to dealer firms in the form of payments for marketing support, seminar support, training meetings, or comparable expenses in the discretion of the Distributor. Please contact your Financial Intermediary for details about revenue sharing payments it may receive. Any payments described above will not change the price paid by investors for the purchase of shares of the Fund or the amount of proceeds received by the Fund on the sale of shares.
Householding. To reduce expenses, only one copy of most financial reports and prospectuses may be mailed to households, even if more than one person in a household holds shares of the Fund. Call an Alger Funds Representative at (800) 223-3810 if you need additional copies of financial reports or prospectuses, or download them at www.alger.com. If you do not want the mailing of these documents to be combined with those for other members of your household, contact Alger Funds in writing at Alger Family of Funds, c/o Brown Brothers Harriman & Co., 50 Post Office Square, Boston, Massachusetts, 02110.
Disclosure of Portfolio Holdings
For a discussion of the Fund’s policies and procedures regarding the selective disclosure of its portfolio holdings, please see the SAI. The Fund makes publicly available its month-end top 5 holdings with a 10 day lag and its month-end full portfolio with a 60 day lag on its website www.alger.com.

Prospectus 20/20
Hypothetical Investment and Expense Information
Hypothetical investment and expense information, which is not required to be included in this Prospectus by the SEC, is presented in the chart below. This information is intended to reflect the annual and cumulative effect of the Fund’s expenses, including management fees and other Fund costs, on the Fund’s total return based on NAV over a 10-year period. The example assumes the following:
You invest $10,000 in the Fund and hold it for the entire 10-year period; and
Your investment has a 5% return before expenses each year.
There is no assurance that the annual expense ratio will be the expense ratio for the Fund classes for any of the years shown. To the extent that the Manager and any of its affiliates alter any fee waivers and/or expense reimbursements pursuant to a voluntary or contractual arrangement, your actual expenses may be higher or lower. This is only a hypothetical presentation made to illustrate what expenses and returns would be under the above scenarios. Your actual expenses and returns are likely to differ (higher or lower) from those shown below.
Alger Weatherbie Enduring Growth ETF
 
Year 1
Year 2
Year 3
Year 4
Year 5
Year 6
Year 7
Year 8
Year 9
Year 10
Expense Ratio
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
Cumulative Gross Return
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
Cumulative Net Return
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
[__]%
End Investment Balance
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
Annual Expense
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
$[__]
Financial Highlights
The financial highlights are not available at this time for the Fund because the Fund has not commenced operations prior to the date of this Prospectus. Financial information, when available, will be included in the Fund’s next annual or semiannual report.

For Fund Information:
By Telephone:
(800) 223-3810
By Mail:
Alger Family of Funds
c/o Brown Brothers Harriman & Co.
50 Post Office Square
Boston, Massachusetts 02110
Online
Text versions of Fund documents can be downloaded from the following sources:
 
The Funds: www.alger.com
 
SEC (EDGAR data base): www.sec.gov
Statement of Additional Information
For more detailed information about the Fund and its policies, please read the Fund’s SAI, which is incorporated by reference into (is legally made a part of) this Prospectus. You can get a free copy of the SAI by calling the Fund’s toll-free number, at the Fund’s website at www.alger.com or by writing to the address above. The SAI is on file with the SEC.
Annual and Semi-Annual Reports
Additional information about the Fund’s investments is available in the Fund’s annual and semi-annual reports to shareholders. In the Fund’s annual report you will find a discussion of the market conditions and investment strategies that significantly affected the Fund’s performance during the period covered by the report. You can receive free copies of these reports by calling the Fund’s toll-free number, at the Fund’s website at www.alger.com or by writing to the address above. Copies can also be obtained for a duplicating fee by E-mail request to [email protected]. Fund documents are also available on the EDGAR database on the SEC’s Internet site at www.sec.gov.
Quarterly Fund Holdings
The Fund’s most recent month end portfolio holdings are available approximately sixty days after month-end on the Fund’s website at www.alger.com. The Fund also files its complete schedule of portfolio holdings with the SEC for the first and third quarter of each fiscal year as an exhibit to Form N-PORT and semi-annually on Form N-CSR. Forms N-PORT and N-CSR are available online on the SEC’s website at www.sec.gov. A copy of the most recent quarterly holdings may also be obtained from the Fund by calling (800) 223-3810.
Alger Electronic Delivery Service
The Fund provides you with an enhancement of your ability to access Fund documents online. When Fund documents such as prospectuses and annual and semi-annual reports are available, you will be sent an e-mail notification with a link that will take you directly to the Fund information on the Fund’s website. To sign up for this free service, enroll at www.icsdelivery.com/alger.
ActiveShares® Methodology
The Fund utilizes the ActiveShares® methodology licensed from Precidian Investments, LLC (“Precidian”). Precidian’s products and services are protected by domestic and international intellectual property protections, including, without limitation, the following issued patents and pending patent applications: 7813987, 8285624, 7925562, 13011746, 14528658, 14208966, 16196560.
Distributor: Fred Alger & Company, LLC
The Alger ETF Trust    SEC File #811-23603
EGETF