Key 3 Portfolio, Series 28
Ticker Symbol: FVVFRX

The deferred sales charge will be deducted in three monthly installments commencing 2/20/25. When the public offering price is less than or equal to $10.00 per unit, there will be no initial sales charge. If the price exceeds $10.00 per unit, you will pay an initial sales charge. The C&D fee is a charge of $0.050 per unit collected at the end of the initial offering period. If the price you pay exceeds $10.00 per unit, the C&D fee will be less than 0.50%; if the price you pay is less than $10.00 per unit, the C&D fee will exceed 0.50%. Estimated organization costs will be deducted from the assets of the trust at the end of the initial offering period. Estimated organization costs and trust operating expenses are assessed on a fixed dollar amount per unit basis which, as a percentage of average net assets, will vary over time. Actual expenses may be more or less than the estimates. Please see “Fee Table” in the trust prospectus for additional information.

You should consider the portfolio's investment objectives, risks, and charges and expenses carefully before investing. Contact your financial professional or call First Trust Portfolios, L.P. at 1.800.621.1675 to request a prospectus, which contains this and other information about the portfolio. Read it carefully before you invest.

Risk Considerations
An investment in this unmanaged unit investment trust should be made with an understanding of the risks involved with owning common stocks, such as an economic recession and the possible deterioration of either the financial condition of the issuers of the equity securities or the general condition of the stock market.

You should be aware that the portfolio is concentrated in stocks in the communication services, health care and information technology sectors which involves additional risks, including limited diversification. The companies engaged in the communication services sector are subject to rapidly changing technology, rapid product obsolescence, loss of patent protection, cyclical market patterns, governmental regulation, evolving industry standards and frequent new product introductions. Certain companies may be particularly susceptible to cybersecurity threats, which could have an adverse effect on their business. The companies engaged in the health care sector are subject to fierce competition, high research and development costs, governmental regulations, loss of patent protection, and changing consumer spending trends. In addition, health crises, such as a pandemic outbreak, can severely impact the health care industry in particular. The companies engaged in the information technology sector are subject to fierce competition, high research and development costs, and their products and services may be subject to rapid obsolescence. Technology company stocks, especially those which are Internet-related, may experience extreme price and volume fluctuations that are often unrelated to their operating performance.

Securities of non-U.S. issuers are subject to additional risks, including currency fluctuations, political risks, withholding, the lack of adequate financial information, and exchange control restrictions impacting non-U.S. issuers.

Large capitalization companies may grow at a slower rate than the overall market.

As the use of Internet technology has become more prevalent in the course of business, the trust has become more susceptible to potential operational risks through breaches in cybersecurity.

Ongoing armed conflicts between Russia and Ukraine in Europe and among Israel, Hamas and other militant groups in the Middle East have caused and could continue to cause significant market disruptions and volatility within the markets in Russia, Europe, the Middle East and the United States. The hostilities and sanctions resulting from those hostilities could have a significant impact on certain investments as well as performance.

The ongoing effects of the COVID-19 global pandemic, or the potential impacts of any future public health crisis, may cause significant volatility and uncertainty in global financial markets. While vaccines have been developed, there is no guarantee that vaccines will be effective against future variants of the disease.

The value of the securities held by the trust may be subject to steep declines or increased volatility due to changes in performance or perception of the issuers.

This UIT is a buy and hold strategy and investors should consider their ability to hold the trust until maturity. There may be tax consequences unless units are purchased in an IRA or other qualified plan.