PIMCO Income Strategy Fund (the Fund) is a diversified, closed-end management investment company. The Fund's investment objective is to seek high current income, consistent with the preservation of capital. The Fund ordinarily invests in a diversified portfolio of floating and/or fixed-rate debt instruments. The Fund is permitted to invest in securities that are subject to legal or contractual restrictions on resale. The Fund's investment manager is Allianz Global Investors Fund Management LLC, which is an indirect, wholly owned subsidiary of Allianz Global Investors of America L.P. (Allianz Global). Allianz Global is an indirect, wholly owned subsidiary of Allianz SE. Its sub-adviser is Pacific Investment Management Company LLC.