Company: NMZ
Filing Date: 2025-07-07
Form Type: N-CSRS
Source: 0001193125-25-156000
Chunk: 47

Company: NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND
Filing Date: 2025-07-07
Form: N-CSRS
Chunk 47
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 | — |     |               | 681,310 |     |               | — |     |                | (15,875,256 | ) |     |               | (142,506,180 | ) |     |                | — |     |             | (3,715,763  | ) |     |       | (161,415,889 | ) |

201

Notes to Financial Statements (continued) As of prior fiscal period end, the Funds had capital loss carryforwards, which will not expire:

| Fund |     | Short-Term |             |     | Long-Term |             |     | Total |             |
|:-----|:----|:-----------|------------:|:----|:----------|------------:|:----|:------|------------:|
| NVG1 |     | $          |   1,531,766 |     | $         | 104,302,352 |     | $     | 105,834,118 |
| NZF1 |     |            | 172,160,901 |     |           | 120,276,504 |     |       | 292,437,405 |
| NMZ  |     |            |  43,533,176 |     |           | 125,862,346 |     |       | 169,395,522 |
| NMCO |     |            |  84,341,090 |     |           |  46,509,316 |     |       | 130,850,406 |
| NDMO |     |            |  56,405,135 |     |           |  86,101,045 |     |       | 142,506,180 |

| 1 | A portion of NVG’s and NZF’s capital loss carryforwards is subject to limitation under the Internal 
 Revenue Code and related regulations.                                                               |

| 8. | Management Fees and Other Transactions with Affiliates |

Management Fees: Each Fund’s management fee compensates the Adviser for the overall investment advisory and administrative services and general office facilities. The Sub-Adviseris compensated for its services to the Funds from the management fees paid to the Adviser. Each Fund’s management fee consists of two components – a fund-level fee, based only on the amount of assets within each individual Fund, and a complex-level fee, based on the aggregate amount of all eligible fund assets managed by the Adviser. This pricing