MainStay MacKay DefinedTerm Municipal Opportunities Fund announced monthly dividend distributions of $0.085 per common share for the months of October, November and December 2022. This amount is consistent with the Fund's July, August and September 2022 dividend distribution, which was also $0.085 per common share. Ex-Dates are October 13, 2022.

November 14, 2022 and December 15, 2022. Record Dates of October 14, 2022, November 15, 2022 and December 15, 2022. Payable dates are October 31, 2022, November 30, 2022 and December 30, 2022 Respectively.