Semiannual Report June 30, 2021 Natixis Loomis Sayles Short Duration Income ETF Table of Contents Natixis U.S. Equity Opportunities ETF Portfolio Review 1 Portfolio of Investments 12 Natixis Vaughan Nelson Mid Cap ETF Financial Statements 23 Natixis Vaughan Nelson Select ETF Notes to Financial Statements 31 NATIXIS LOOMIS SAYLES SHORT DURATION INCOME ETF Managers NYSE Arca: LSST Daniel Conklin, CFA® Christopher T. Harms Clifton V. Rowe, CFA® Loomis, Sayles & Company, L.P. Investment Goal The Fund’s investment objective is current income consistent with preservation of capital. Average Annual Total Returns — June 30, 20213 Life of Fund Expense Ratios4 (Inception 6 Months 1 Year12/28/17) Gross Net NAV1 0.36% 2.21% 3.45% 1.05% 0.38% Market1 0.28 2.20 3.49 Comparative Performance Bloomberg Barclays U.S. Government/Credit 1-3 Year Bond Index2 0.00 0.44 2.55 Performance data shown represents past performance and is no guarantee of, and not necessarily indicative of, future results. Total return and value will vary, and you may have a gain or loss when shares are sold. Current performance may be lower or higher than quoted. For most recent month-end performance, visit im.natixis.com. You may not invest directly in an index. Performance for periods less than one year is cumulative, not annualized. Returns reflect changes in share price and reinvestment of dividends and capital gains, if any. The table(s) do not reflect taxes shareholders might owe on any fund distributions or when they redeem or sell their shares. 1 The NAV return is based on the NAV of the Fund, and the market return is based on the market price per share of the Fund, which is determined by using the midpoint between the highest bid and the lowest offer on the primary stock exchange on which shares of the Fund are listed for trading, as of the time that the Fund’s NAV is calculated. 12/28/17 represents the date trading of Fund shares commenced on the secondary market. 12/27/17 represents commencement of operations for accounting and financial reporting purposes only. NAV is used as a proxy for the opening market price on 12/28/17. Market and NAV returns assume that dividends and capital gain distributions have been reinvested in the Fund at market price and NAV, respectively. 2 The Bloomberg Barclays U.S. Government/Credit 1-3 Year Bond Index is an unmanaged index which is a component of the U.S. Government/Credit Bond Index, which includes Treasury and agency securities (U.S. Government Bond Index) and publicly issued US corporate and foreign debentures and secured notes (U.S. Credit Bond Index). The bonds in the index are investment grade with a maturity between one and three years. Effective August 24, 2021, the index name will change to the Bloomberg U.S. Government/Credit 1-3 Year Bond Index. 3 Fund performance has been increased by fee waivers and/or expense reimbursements, if any, without which performance would have been lower. 4 Expense ratios are as shown in the Fund’s prospectus in effect as of the date of this report. The expense ratios for the current reporting period can be found in the Financial Highlights section of this report under Ratios to Average Net Assets. Net expenses reflect contractual expense limitations set to expire on 4/30/24. When a Fund’s expenses are below the limitation, gross and net expense ratios will be the same. See Note 6 of the Notes to Financial Statements for more information about the Fund’s expense limitations. 1 | NATIXIS U.S. EQUITY OPPORTUNITIES ETF Managers NYSE Arca: EQOP William C. Nygren, CFA® Kevin G. Grant*, CFA® M. Colin Hudson, CFA® Michael J. Mangan, CFA®, CPA Michael A. Nicolas, CFA® Harris Associates L.P. Aziz V. Hamzaogullari, CFA® Loomis, Sayles & Company, L.P. * Effective January 1, 2022, Mr. Grant will no longer serve as a portfolio manager of the Fund. Investment Goal The Fund seeks long-term growth of capital. Total Returns — June 30, 20214 Life of Fund Expense Ratios5 (Inception 6 Months9/17/20) Gross Net NAV1 19.43% 37.07% 1.57% 0.90% Market1 19.49 37.19 Comparative Performance S&P 500® Index2 15.25 28.45 Russell 1000® Index3 14.95 30.04 Performance data shown represents past performance and is no guarantee of, and not necessarily indicative of, future results. Total return and value will vary, and you may have a gain or loss when shares are sold. Current performance may be lower or higher than quoted. For most recent month-end performance, visit im.natixis.com. You may not invest directly in an index. Performance for periods less than one year is cumulative, not annualized. Returns reflect changes in share price and reinvestment of dividends and capital gains, if any. The table(s) do not reflect taxes shareholders might owe on any fund distributions or when they redeem or sell their shares. 1 The NAV return is based on the NAV of the Fund, and the market return is based on the market price per share of the Fund, which is determined by using the midpoint between the highest bid and the lowest offer on the primary stock exchange on which shares of the Fund are listed for trading, as of the time that the Fund’s NAV is calculated. 9/17/20 represents the date trading of Fund shares commenced on the secondary market. 9/16/20 represents commencement of operations for accounting and financial reporting purposes only. NAV is used as a proxy for the opening market price on 9/17/20. Market and NAV returns assume that dividends and capital gain distributions have been reinvested in the Fund at market price and NAV, respectively. 2 S&P 500® Index is a widely recognized measure of U.S. stock market performance. It is an unmanaged index of 500 common stocks chosen for market size, liquidity, and industry group representation, among other factors. It also measures the performance of the large cap segment of the US equities market. 3 Russell 1000® Index measures the performance of the large-cap segment of the U.S. equity universe. It is a subset of the Russell 3000® Index and includes approximately 1000 of the largest securities based on a combination of their market cap and current index membership. The Russell 1000® Index represents approximately 92% of the U.S. market and is constructed to provide a comprehensive and unbiased barometer for the large-cap segment and is completely reconstituted annually to ensure new and growing equities are reflected. 4 Fund performance has been increased by fee waivers and/or expense reimbursements, if any, without which performance would have been lower. 5 Expense ratios are as shown in the Fund’s prospectus in effect as of the date of this report. The expense ratios for the current reporting period can be found in the Financial Highlights section of this report under Ratios to Average Net Assets. Net expenses reflect contractual expense limitations set to expire on 4/30/23. When a Fund’s expenses are below the limitation, gross and net expense ratios will be the same. See Note 6 of the Notes to Financial Statements for more information about the Fund’s expense limitations. | 2 NATIXIS VAUGHAN NELSON MID CAP ETF Managers NYSE Arca: VNMC Dennis G. Alff, CFA® Chad D. Fargason Chris D. Wallis, CFA® Vaughan Nelson Investment Management, L.P. Investment Goal The Fund seeks long-term capital appreciation. Total Returns — June 30, 20213 Life of Fund Expense Ratios4 (Inception 6 Months9/17/20) Gross Net NAV1 17.54% 39.76% 2.45% 0.90% Market1 17.56 39.88 Comparative Performance Russell Midcap® Value Index2 19.45 39.40 Performance data shown represents past performance and is no guarantee of, and not necessarily indicative of, future results. Total return and value will vary, and you may have a gain or loss when shares are sold. Current performance may be lower or higher than quoted. For most recent month-end performance, visit im.natixis.com. You may not invest directly in an index. Performance for periods less than one year is cumulative, not annualized. Returns reflect changes in share price and reinvestment of dividends and capital gains, if any. The table(s) do not reflect taxes shareholders might owe on any fund distributions or when they redeem or sell their shares. 1 The NAV return is based on the NAV of the Fund, and the market return is based on the market price per share of the Fund, which is determined by using the midpoint between the highest bid and the lowest offer on the primary stock exchange on which shares of the Fund are listed for trading, as of the time that the Fund’s NAV is calculated. 9/17/20 represents the date trading of Fund shares commenced on the secondary market. 9/16/20 represents commencement of operations for accounting and financial reporting purposes only. NAV is used as a proxy for the opening market price on 9/17/20. Market and NAV returns assume that dividends and capital gain distributions have been reinvested in the Fund at market price and NAV, respectively. 2 Russell Midcap® Value Index is an unmanaged index that measures the performance of the mid-cap value segment of the U.S. equity universe. It includes those Russell Midcap® Index companies with lower price-to-book ratios and lower forecasted growth values. 3 Fund performance has been increased by fee waivers and/or expense reimbursements, if any, without which performance would have been lower.