Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 9

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 9
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 2024. See “Use of Leverage—Effects of Leverage” in the accompanying Prospectus. The actual amount of interest expense borne by the Fund will vary over time in accordance with the level of the Fund’s use of reverse repurchase agreements, dollar rolls and/or borrowings and variations in market interest rates. Borrowing expense is required to be treated as an expense of the Fund for accounting purposes. Any associated income or gains (or losses) realized from leverage obtained through such instruments is not reflected in the Annual Expenses table above, but would be reflected in the Fund’s performance results.

(4) Other expenses are estimated for the Fund’s current fiscal year ending June 30, 2025.

(5) “Dividend Cost on Preferred Shares”, including distributions on preferred shares, and “Interest Payments on Borrowed Funds” are borne by the Fund separately from management fees paid to PIMCO. Excluding these expenses, Total Annual Fund Operating Expenses are 0.74%. Excluding only distributions on preferred shares of 0.03%, Total Annual Fund Operating Expenses are 2.33%.

Example

The following example illustrates the expenses that you would pay on a $1,000 investment in Common Shares of the Fund (including an assumed total sales load or commission of 1.00% and the other estimated costs of this offering to be borne by the holders of Common Shares of 0.05%), assuming (1) that the Fund’s net assets do not increase or decrease, (2) that the Fund incurs total annual expenses of 2.36% of net assets attributable to Common Shares in years 1 through 10 (assuming assets attributable to outstanding preferred shares and to reverse repurchase agreements representing approximately 17.27% of the Fund’s total managed assets) and (3) a 5% annual return (1) :

|                         | 1 Year | 3 Years | 5 Years | 10 Years |
| Total Expenses Incurred |    $24 |     $75 |    $128 |     $274 |

(1) The example above should not be considered a representation of future expenses. Actual expenses may be higher or lower than those shown. The example assumes that the estimated Interest Payments on Borrowed Funds, Dividend Cost on Preferred Shares and Other Expenses set forth in the Annual Expenses table are accurate, that the rate listed under Total Annual Fund Operating Expenses remains the same each year and that all dividends and distributions are reinvested at NAV. Actual expenses may be greater or less