Form4insider filings, from the source

Company · CIK 0001266585 · NYSE

NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND · NMZ

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $490 · 3sales $31k · 4net −$30k
$10k$10k$100k$100k$1M$1MbuyssalesMar 28Apr 27May 28Jun 28Jul 29Aug 29Sep 28

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Aug 4, 2026 SForm 4 →Aug 6, 1:39 pm EDTBANK OF AMERICA CORP +110% Owner3$10.27$310−100%
Aug 4, 2026 PForm 4 →Aug 6, 1:39 pm EDTBANK OF AMERICA CORP +110% Owner3$10.18$313—
Aug 3, 2026 PForm 4 →Aug 4, 2:48 pm EDTBANK OF AMERICA CORP +110% Owner36$10.21$36836—
Jul 31, 2026 SForm 4 →Aug 4, 2:48 pm EDTBANK OF AMERICA CORP +110% Owner36$10.27$3700−100%
Jul 24, 2026 SForm 4 →Jul 28, 1:40 pm EDTBANK OF AMERICA CORP +110% Owner9$10.18$920−100%
Jul 24, 2026 PForm 4 →Jul 28, 1:40 pm EDTBANK OF AMERICA CORP +110% Owner9$10.24$929—
Jun 22, 2026 SForm 4 →Jun 29, 1:46 pm EDTAlbin F MoschnerOther2,912$10.36$30,180736−79.8% late

Reported at this company — derivatives (options, RSUs, warrants)

No reported derivative activity in this period.