Filed by Nuveen Municipal High Income Opportunity
Fund
(Commission File No. 333-290590)
pursuant to Rule 425 under the Securities Act
of 1933, as amended,
and deemed filed pursuant to Rule 14a-6 under
the Securities Exchange Act of 1934, as amended
Subject Company: Nuveen Pennsylvania Quality
Municipal Income Fund
(Commission File No. 811-06265)

Nuveen New Jersey Quality Municipal Income Fund (NXJ)
Nuveen Pennsylvania Quality Municipal Income Fund (NQP)
Nuveen Missouri Quality Municipal Income Fund (NOM)
Nuveen Municipal High Income Opportunity Fund (NMZ)
Supplemental Material for Proxy Advisory Firm
February 3, 2026
Below is additional information related to the Joint Proxy Statement/Prospectus
dated December 17, 2025, and the Joint Proxy Statement dated December 19, 2025. This supplemental disclosure is in response to a proxy
advisory firm’s inquiry about the impact of the loss of state tax exemption.
When comparing municipal yields and the relative impact of state tax
rates, industry convention is to gross-up yields by the maximum state tax rate, which is the approach used for this merger. The table
below grosses up the common earnings yield for NXJ, NQP, and NOM by each state’s maximum tax rate to arrive at a state tax adjusted
equivalent rate. When comparing these state tax adjusted equivalent rates to the NMZ post-merger common earnings rate, shareholders in
NXJ, NQP, and NOM would realize an earnings gain.
Shareholders of NXJ, NQP, and NOM experience no negative impact from
losing their state tax exemption on earnings post-merger because NMZ’s earnings yield significantly exceeds that of NXJ, NQP, and
NOM. The state fund shareholders experience a net increase in tax adjusted yields post-merger despite losing their state tax exemption
as is shown in the state tax adjusted equivalent rate change row below.
| · | Isolating the taxable equivalent
yield impact from the loss of the state tax exemption for NXJ, NQP, and NOM shareholders results in higher common earnings on a before-
and after-tax basis for those common shareholders remaining in the fund post-merger. The state tax adjusted equivalent rate uses each
state’s maximum tax rate. |
| |
As of July 31, 2025 |
| |
NXJ |
NQP |
NOM |
NMZ
Post-
Merger |
| Common Earnings Yield |
3.30% |
3.54% |
3.32% |
6.17% |
| Change |
+2.87% |
+2.63% |
+2.85% |
N/A |
| Max State Tax Rate |
10.75% |
3.07% |
4.80% |
N/A |
| State Tax Adjusted Equivalent Rate |
3.70% |
3.65% |
3.49% |
6.17% |
| Change |
+2.47% |
+2.52% |
+2.68% |
N/A |