For the period shown in the bar chart, the Fund’s highest quarterly return was 36.11% for the quarter ended June 30, 2020, and the lowest quarterly return was -39.27% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the Russell 3000^® Index, as well as an additional index that includes securities with market capitalizations and certain other attributes similar to the average market capitalization and attributes of the securities in which the Fund invests, the Russell Midcap^® Growth Index. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Updated performance information is available at www.hennessyfunds.com.

For the period shown in the bar chart, the Fund’s highest quarterly return was 29.66% for the quarter ended June 30, 2020, and the lowest quarterly return was -30.24% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses and inception dates.

We use the Russell Midcap^® Growth Index as an additional index because it reflects the performance of investments with market capitalizations and certain other attributes similar to the average market capitalization and attributes of the securities held by the Fund.

The after-tax returns are calculated using the highest historical individual stated federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an individual investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Investor Class shares only, and after-tax returns for Institutional Class shares will vary. The Fund’s “return after taxes on distributions and sale of Fund shares” may be higher than its “return after taxes on distributions” because it may include a tax benefit due to the capital losses generated by the sale of Fund shares.

We use the Russell Midcap^® Index as an additional index because it reflects the performance of investments similar to those of the Fund.

The after-tax returns are calculated using the highest historical individual stated federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an individual investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Investor Class shares only, and after-tax returns for Institutional Class shares will vary.

For the period shown in the bar chart, the Fund’s highest quarterly return was 22.43% for the quarter ended June 30, 2020, and the lowest quarterly return was -28.85% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the S&P 500^® Index, as well as an additional index that reflects the types of securities in which the Fund invests, the Russell 1000^® Value Index. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

For the period shown in the bar chart, the Fund’s highest quarterly return was 16.26% for the quarter ended December 31, 2022, and the lowest quarterly return was -28.40% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses and inception dates.

The following performance information provides some indication of the risks of investing in the Hennessy Total Return Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the DJIA, as well as an additional index that reflects the types of securities in which the Fund invests, the 75/25 Blended DJIA/Treasury Index (which consists of 75% common stocks represented by the DJIA and 25% short-duration Treasury securities represented by the ICE BofAML U.S. 3-Month Treasury Bill Index). For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

For the period shown on the bar chart, the Fund’s highest quarterly return was 12.66% for the quarter ended December 31, 2022, and the lowest quarterly return was -17.87% for the quarter ended March 31, 2020.

We use the 75/25 Blended DJIA/Treasury Index as an additional index because it reflects the performance of investments similar to those of the Fund.

The after-tax returns are calculated using the highest historical individual stated federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an individual investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

For the period shown in the bar chart, the Fund’s highest quarterly return was 12.62% for the quarter ended June 30, 2020, and the lowest quarterly return was -14.79% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses.

The after-tax returns are calculated using the highest historical individual stated federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an individual investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Investor Class shares only and after-tax returns for Institutional Class shares will vary. The Fund’s “return after taxes on distributions and sale of Fund shares” may be higher than its “return after taxes on distributions” because it may include a tax benefit due to the capital losses generated by the sale of Fund shares.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the S&P 500^® Index, as well as an additional index that reflects the market sector in which the Fund invests, the S&P 500^® Energy Index. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund is the successor to the BP Capital TwinLine Energy Fund, a series of Professionally Managed Portfolios (the “Predecessor BP TwinLine Energy Fund”), pursuant to a reorganization that took place on October 26, 2018. The performance information provided for the periods on or prior to October 26, 2018, is historical information for the Predecessor BP TwinLine Energy Fund. The Predecessor BP TwinLine Energy Fund had a substantially similar investment objective and investment strategy as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

For the period shown in the bar chart, the Fund’s highest quarterly return was 49.76% for the quarter ended June 30, 2020, and the lowest quarterly return was -59.88% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the S&P 500^® Index, as well as an additional index that reflects the market sector in which the Fund invests, the Alerian US Midstream Energy Index. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund is the successor to the BP Capital TwinLine MLP Fund, a series of Professionally Managed Portfolios (the “Predecessor BP TwinLine MLP Fund”), pursuant to a reorganization that took place on October 26, 2018. The performance information provided for the periods on or prior to October 26, 2018, is historical information for the Predecessor BP TwinLine MLP Fund. The Predecessor BP TwinLine MLP Fund had a substantially similar investment objective and investment strategy as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

For the period shown in the bar chart, the Fund’s highest quarterly return was 37.93% for the quarter ended June 30, 2020, and the lowest quarterly return was -53.24% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses.

We use the Alerian US Midstream Energy Index as an additional index because it reflects the performance of investments similar to those of the Fund.

The after-tax returns are calculated using the highest historical individual stated federal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an individual investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for Investor Class shares only, and after-tax returns for Institutional Class shares will vary. The Fund’s “return after taxes on distributions and sale of Fund shares” may be higher than its “return after taxes on distributions” because it may include a tax benefit due to the capital losses generated by the sale of Fund shares.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of indices that reflect broad measures of market performance, the Russell/Nomura Total Market™ Index and the Tokyo Stock Price Index (TOPIX). For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the Tokyo Stock Price Index (TOPIX), as well as an additional index

that reflects the types of securities in which the Fund invests, the Russell/Nomura Small Cap™ Index. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

For the period shown in the bar chart, the Fund’s highest quarterly return was 19.35% for the quarter ended June 30, 2020, and the lowest quarterly return was -23.20% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses and inception dates.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the Russell 1000^® Index, as well as an additional index that reflects the market sector in which the Fund invests, the Russell 1000^® Index Financials. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

For the period shown in the bar chart, the Fund’s highest quarterly return was 22.26% for the quarter ended December 31, 2016, and the lowest quarterly return was -25.61% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses and inception dates.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of an index that reflects a broad measure of market performance, the Russell 2000^® Index, as well as an additional index that reflects the market sector in which the Fund invests, the Russell 2000^® Index Financials. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

For the period shown in the bar chart, the Fund’s highest quarterly return was 57.27% for the quarter ended December 31, 2020, and the lowest quarterly return was -38.05% for the quarter ended March 31, 2020.

Performance of the Fund’s Institutional Class shares differs from that of the Fund’s Investor Class shares because the share classes have different expenses and inception dates.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one, five, and ten years compare with those of indices that reflect broad measures of market performance, the Nasdaq Composite Index and the S&P 500^® Index. For additional information on these indices, please see “Descriptions of Indices” on page 68 of this Prospectus. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyfunds.com.

The following performance information provides some indication of the risks of investing in the Fund by showing changes in its performance from year to year and how the Fund’s average annual returns for one year and since inception compare with those of indices that reflect broad measures of market performance, the S&P 500^® Equal Weight Index and the S&P 500^® Index. The Fund is the successor to the Stance Equity ESG Large Cap Core ETF, a series of The RBB Fund, Inc. (the “Predecessor Fund”), pursuant to a reorganization that took place after the close of business on December 22, 2022. The performance information provided for the periods on or prior to December 22, 2022, is historical information for the Predecessor Fund. The Predecessor Fund had a substantially similar investment objective and investment strategy as the Fund. The Fund’s past performance (before and after taxes) is not necessarily an indication of future performance. Performance may be higher or lower in the future. Updated performance information is available at www.hennessyetfs.com.