Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 169

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 169
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 inflation-indexed securities, the inflation adjustment is integrated into the coupon payment, which is federally tax exempt (and may be state tax exempt). For municipal inflation-indexed securities, there is no adjustment to the principal value. Because municipal inflation-indexed securities are a small component of the municipal bond market, they may be less liquid than conventional municipal bonds. Senior Debt Risk The Fund may be subject to greater levels of credit risk than funds that do not invest in below investment grade senior debt. The Fund may also be subject to greater levels of liquidity risk than funds that do not invest in senior debt. Restrictions on transfers in loan agreements, a lack of publicly available information and other factors may, in certain instances, make senior debt more difficult to sell at an advantageous time or price than other types of securities or instruments. Additionally,

September 28, 2023 | Base Prospectus 63

PIMCO Corporate & Income Opportunity Fund

if the issuer of senior debt prepays, the Fund will have to consider reinvesting the proceeds in other senior debt or similar instruments that may pay lower interest rates. Loans and Other Indebtedness; Loan Acquisitions, Participations and Assignments Risk Loan interests may take the form of (i) direct interests acquired during a primary distribution or other purchase of a loan, (ii) loans originated by the Fund or (iii) assignments of, novations of or participations in all or a portion of a loan acquired in secondary markets. In addition to credit risk and interest rate risk, the Fund's exposure to loan interests may be subject to additional risks. For example, purchasers of loans and other forms of direct indebtedness depend primarily upon the creditworthiness of the borrower for payment of principal and interest. Loans are subject to the risk that scheduled interest or principal payments will not be made in a timely manner or at all, either of which may adversely affect the value of the loan. If the Fund does not receive scheduled interest or principal payments on such indebtedness, the Fund’s share price and yield could be adversely affected. Loans that are fully secured may offer the Fund more protection than an unsecured loan in the event of non-payment of scheduled interest or principal if the Fund is able to access and monetize the collateral. However, the collateral underlying a loan, if any, may be unavailable or insufficient to satisfy a borrower’s obligation. If the Fund becomes owner, whole or in part, of any collateral after a loan is foreclosed, the Fund may incur costs associated with owning and/or monetizing its