Prospectus November 1, 2020 Gilead Fund ETAGX Class A Shares ETCGX Class C Shares ETGLX Class N Shares ETILX Class I Shares Healthcare & Life Sciences Fund ETAHX Class A Shares ETCHX Class C Shares ETNHX Class N Shares ETIHX Class I Shares Multi-Asset Income Fund ETAMX Class A Shares ETCMX Class C Shares ETNMX Class N Shares ETIMX Class I Shares Dividend Opportunities Fund (formerly, the Global Dividend Opportunities Fund) ETADX Class A Shares ETCDX Class C Shares ETNDX Class N Shares ETIDX Class I Shares Limited-Term Bond Fund ETABX Class A Shares ETCBX Class C Shares ETNBX Class N Shares ETIBX Class I Shares Exponential Technologies Fund ETAEX Class A Shares ETCEX Class C Shares ETNEX Class N Shares ETIEX Class I Shares Core Bond Fund ETARX Class A Shares ETCRX Class C Shares ETNRX Class N Shares ETIRX Class I Shares This Prospectus provides important information about the Funds that you should know before investing. Please read it carefully and keep it for future reference. The Securities and Exchange Commission has not approved or disapproved these securities or determined if this Prospectus is truthful or complete. Any representation to the contrary is a criminal offense. NOTICE Beginning January 1, 2021, the Funds intend to meet their shareholder report delivery obligations by posting annual and semi- annual shareholder reports to the Funds’ website, www.eventidefunds.com rather than delivering paper copies. You will be notified by mail each time a report is posted and provided with the website link to access the report. You may elect to receive paper copies of a specific shareholder report or all future shareholder reports free of charge by contacting your financial intermediary (such as a broker-dealer or bank) or, if you are a direct investor, by calling the Funds at 877-771-3836. Your election to receive reports in paper will apply to all funds held within the fund complex. If you already elected to receive shareholder reports electronically, you will not be affected by this change and you do not need to do anything. EVENTIDE ____________________________________________________________________________________________________________________________ i PROSPECTUS NOVEMBER 1, 2020 Table of Contents Eventide Gilead Fund: Fund Summary ..................................................................................................................... 1 Eventide Healthcare & Life Sciences Fund: Fund Summary ........................................................................... 8 Eventide Multi-Asset Income Fund: Fund Summary ........................................................................................ 16 Eventide Dividend Opportunities Fund: Fund Summary ................................................................................. 26 Eventide Limited-Term Bond Fund: Fund Summary ........................................................................................ 34 Eventide Exponential Technologies Fund: Fund Summary ............................................................................ 43 Eventide Core Bond Fund: Fund Summary ......................................................................................................... 50 Additional Information about Each Fund’s Principal Investment Strategies and Related Risks ..... 58 How to Buy Shares ...................................................................................................................................................... 99 How to Redeem Shares ............................................................................................................................................ 106 Valuing Each Fund’s Assets ................................................................................................................................... 109 Dividends, Distributions & Taxes ............................................................................................................................ 110 Management of the Funds ......................................................................................................................................... 111 Financial Highlights ..................................................................................................................................................... 115 Appendix A Intermediary-Specific Sales Charge Reductions and Waivers ...................................... 135 Privacy Notice ............................................................................................................................................................... 140 For More Information ................................................................................................................................................. 142 ___________________________________________________________________________________________________________________________ EVENTIDE ii PROSPECTUS NOVEMBER 1, 2020 Eventide Gilead Fund Fund Summary Investment Objective. The Eventide Gilead Fund (the “Gilead Fund” or the “Fund”) seeks to provide long-term capital appreciation. Fees and Expenses of the Fund. The tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts on purchases of Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in the Fund. More information about these and other discounts is available from your financial professional and is included in the section of the Fund’s prospectus entitled How to Buy Shares on page 99 and Appendix A – Intermediary-Specific Sales Charge Reductions and Waivers, and in the sections of the Fund’s Statement of Additional Information entitled Reduction of Up-Front Sales Charge on Class A Shares on page 68, and Waivers of Up-Front Sales Charge on Class A Shares on page 69. Shareholder Fees Fees paid directly from your investment Class A Class C Class N Class I Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price) 5.75% None None None Maximum Deferred Sales Charge (Load) (as a % of the lesser of the NAV of the shares redeemed or the original purchase price) 1.00%1 1.00%2 None None Maximum Sales Charge (Load) Imposed on Reinvested Dividends and other Distributions None None None None Redemption Fee for Shares Redeemed by Wire Transfer $15 $15 $15 $15 Annual Fund Operating Expenses Expenses that you pay each year as a percentage of the value of your investment Management Fees 1.00% 1.00% 1.00% 1.00% Distribution and/or Service (12b-1) Fees 0.25% 1.00% 0.20% 0.00% Other Expenses 0.18% 0.18% 0.18% 0.18% Total Annual Fund Operating Expenses 1.43% 2.18% 1.38% 1.18% 1. The maximum deferred sales charge on Class A shares applies only to purchases of $1 million or more made without an initial sales charge and applies to shares sold within 18 months of purchase. 2. The maximum deferred sales charge on Class C shares applies to shares sold within 12 months of purchase. Example of Hypothetical Fund Costs. This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of those periods. The Example only accounts for the Fund’s expense limitation in place through its expiration period, October 31, 2021, and then depicts the Fund’s total annual expenses thereafter. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 1 Year 3 Years 5 Years 10 Years Class A $712 $1,001 $1,312 $2,190 Class C – no redemption $221 $682 $1,169 $2,513 Class C - with redemption $321 $682 $1,169 $2,513 Class N $140 $437 $755 $1,657 Class I $120 $375 $649 $1,432 ____________________________________________________________________________________________________________________________ EVENTIDE 1 PROSPECTUS NOVEMBER 1, 2020 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 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. The portfolio turnover rate of the Fund for the fiscal year ended June 30, 2020 was 35% of the average value of its portfolio. Principal Investment Strategies Normally, the Gilead Fund invests primarily in a broad range of equity securities without limitation to market capitalization. The Fund may invest without limitation in securities in companies domiciled outside the United States either directly or through American Depositary Receipts (“ADRs”). The Fund’s investment adviser, Eventide Asset Management, LLC (“Eventide” or the “Adviser”) analyzes the performance of potential investments not only for financial strengths and outlook, but also for the company’s ability to operate with integrity and create value for customers, employees, and other stakeholders. While few companies may reach these ideals in every area of their business, these principles articulate the Adviser’s highest expectations for corporate behavior. From time to time, the Fund may invest a substantial portion of its assets in the stock of companies in one or more sectors of