Company: NMZ
Filing Date: 2025-11-18
Form Type: N-14 8C/A
Source: 0001999371-25-018025
Chunk: 230

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-11-18
Form: N-14 8C/A
Chunk 230
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 on assets attributable to preferred shares, where applicable.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   
 ● The expense ratios reflect, among other things, all interest expenses and other costs related to preferred shares and/or the interest expense deemed to have been paid by the Fund on the floating rate certificates issued by the special purpose trusts for the self-deposited inverse floaters held by the Fund, where applicable, as follows:                                                                                                                                                                                                                                                                                                                                                                                               |

| Year Ended May 31: 
 2025               | Ratios of Interest Expense to Average Net Assets Applicable to Common Shares 
                                                                         3.00 | % |
|:-------------------|-----------------------------------------------------------------------------:|:--|
| 2024               |                                                                         3.14 |   |
| 2023               |                                                                         2.25 |   |
| 2022               |                                                                         0.69 |   |
| 2021               |                                                                         0.63 |   |
| 2020               |                                                                         1.29 |   |
| 2019               |                                                                         1.40 |   |
| 2018               |                                                                         1.19 |   |
| 2017               |                                                                         0.99 |   |
| 2016               |                                                                         0.69 |   |

| (d) | Aggregate Amount Outstanding: Aggregate amount outstanding represents the principal amount outstanding or liquidation preference as of the end of the relevant fiscal year.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |
| (e) | Asset Coverage Per $100,000: Asset coverage per $100,000 is calculated by subtracting the Fund’s liabilities and indebtedness not represented by senior securities from the Fund’s total assets, dividing the result by the aggregate amount of the Fund’s senior securities representing indebtedness then outstanding (if applicable), plus the aggregate of the involuntary liquidation preference of the outstanding preferred shares, if applicable, and multiplying the result by 100,000. For purpose of asset coverage above, senior securities consist of preferred shares or borrowings of a Fund and does not include derivative transactions and other investments that have the economic effect of leverage such as reverse repurchase agreements and tender option bonds. If the leverage effects of such investments were included, the asset coverage amounts presented would be lower. |

<div align='center'>B-6</div>

Acquiring Fund

The
following Financial Highlights table is intended to help a prospective investor understand the Fund’s financial performance for
the periods shown. Certain information of the Fund reflects financial results for a single common share of the