Company · CIK 1266585 # NUVEEN MUNICIPAL HIGH INCOME OPPORTUNITY FUND | CIK | [1266585](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001266585) (SEC EDGAR) | | --- | --- | | Incorporated in | MA | | Business address | IL | | Listed | NMZ (NYSE) | | First annual or quarterly report | none on EDGAR | ## Offerings 0 registrations No offering chain starts here after 2002-11-04: the company's filings belong to registrations filed earlier, or to drafts and notices only. ## Filings 14 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2026-10-23 | [424B5](https://www.sec.gov/Archives/edgar/data/1266585/000199937126023426/0001999371-26-023426-index.htm) Shelf takedown | 333-277778 | 0001999371-26-023426 | | 2025-12-17 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999525003802/9999999995-25-003802-index.htm) Declared effective | 333-290590 | 9999999995-25-003802 | | 2021-12-17 | [424B5](https://www.sec.gov/Archives/edgar/data/1266585/000119312521360581/0001193125-21-360581-index.htm) Shelf takedown | 333-253965 | 0001193125-21-360581 | | 2021-03-08 | [424B5](https://www.sec.gov/Archives/edgar/data/1266585/000119312521071815/0001193125-21-071815-index.htm) Shelf takedown | 333-253965 | 0001193125-21-071815 | | 2020-02-28 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999520000442/9999999995-20-000442-index.htm) Declared effective | 333-235960 | 9999999995-20-000442 | | 2017-09-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999517002382/9999999995-17-002382-index.htm) Declared effective | 333-220101 | 9999999995-17-002382 | | 2016-10-06 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999516005897/9999999995-16-005897-index.htm) Declared effective | 333-211793 | 9999999995-16-005897 | | 2013-04-19 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999513001083/9999999995-13-001083-index.htm) Declared effective | 333-186450 | 9999999995-13-001083 | | 2013-03-06 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999513000642/9999999995-13-000642-index.htm) Declared effective | 333-187032 | 9999999995-13-000642 | | 2013-02-28 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999513000596/9999999995-13-000596-index.htm) Declared effective | 333-161462 | 9999999995-13-000596 | | 2012-05-25 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999512001641/9999999995-12-001641-index.htm) Declared effective | 333-161462 | 9999999995-12-001641 | | 2010-01-29 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999510000378/9999999995-10-000378-index.htm) Declared effective | 333-161462 | 9999999995-10-000378 | | 2009-04-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999509000805/9999999995-09-000805-index.htm) Declared effective | 333-140017 | 9999999995-09-000805 | | 2007-09-21 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1266585/999999999507003748/9999999995-07-003748-index.htm) Declared effective | 333-140017 | 9999999995-07-003748 | [All filings of this company](https://equitycapital.markets/filings?cik=1266585) · [CSV](https://equitycapital.markets/filings.csv?cik=1266585) --- Source page: https://equitycapital.markets/company/1266585 · Data: U.S. SEC EDGAR · CC BY 4.0