Nuveen Municipal High Income Opportunity Fund is registered as a diversified closed-end management investment company under the Investment Company Act of 1940 (the "1940 Act "), as amended. NVG, NZF, NMZ, NMCO and NDMO were incorporated as Massachusetts Business Trust on July 12, 1999, March 21, 2001, October 8, 2003, April 18, 2019 and November 4, 2019, respectively.
