0001864804-21-000001.txt : 20210601 0001864804-21-000001.hdr.sgml : 20210601 20210601085104 ACCESSION NUMBER: 0001864804-21-000001 CONFORMED SUBMISSION TYPE: 3 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210601 FILED AS OF DATE: 20210601 DATE AS OF CHANGE: 20210601 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Denlinger Michael CENTRAL INDEX KEY: 0001864804 FILING VALUES: FORM TYPE: 3 SEC ACT: 1934 Act SEC FILE NUMBER: 811-22551 FILM NUMBER: 21983226 MAIL ADDRESS: STREET 1: 1345 AVENUE OF THE AMERICAS CITY: NEW YORK STATE: NY ZIP: 10105 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: MainStay MacKay DefinedTerm Municipal Opportunities Fund CENTRAL INDEX KEY: 0001518557 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 0531 BUSINESS ADDRESS: STREET 1: 51 MADISON AVENUE CITY: NEW YORK STATE: NY ZIP: 10010 BUSINESS PHONE: 212-576-7000 MAIL ADDRESS: STREET 1: 51 MADISON AVENUE CITY: NEW YORK STATE: NY ZIP: 10010 FORMER COMPANY: FORMER CONFORMED NAME: MainStay DefinedTerm Municipal Opportunities Fund DATE OF NAME CHANGE: 20120417 FORMER COMPANY: FORMER CONFORMED NAME: MainStay DefinedTerm Municipal High Income Fund DATE OF NAME CHANGE: 20110419 3 1 primary_doc.xml PRIMARY DOCUMENT X0206 3 2021-06-01 0 0001518557 MainStay MacKay DefinedTerm Municipal Opportunities Fund MMD 0001864804 Denlinger Michael 1345 AVENUE OF THE AMERICAS NEW YORK NY 10105 0 0 0 1 Portfolio Manager Shares of beneficial interest 0 D /s/Thomas C. Humbert, Jr., Attorney-in-Fact 2021-06-01