Fidelity Merrimack Street Trust - Fidelity Sustainable Core Plus Bond ETF is an exchange traded fund launched and managed by Fidelity Management & Research Company LLC. The fund is co-managed by Fidelity Management & Research (U.K.) Limited, Fidelity Management & Research (Hong Kong) Limited and Fidelity Management & Research (Japan) Limited. It invests in fixed income markets of global region. The fund primarily invests in investment-grade, high yield, and emerging market debt securities with varying maturities. It invests in securities of companies that are deemed socially conscious in their business dealings and directly promote environmental responsibility. It employs fundamental analysis to create its portfolio. It seeks to benchmark the performance of its portfolio against the Bloomberg MSCI U.S. Aggregate ESG Choice Bond Index and the Bloomberg U.S. Aggregate Bond Index. The fund employs proprietary research to create its portfolio. Fidelity Merrimack Street Trust - Fidelity Sustainable Core Plus Bond ETF was formed on April 19, 2022 and is domiciled in the United States.