X0306 4 2018-12-19 1 0001162027 ALLIANCEBERNSTEIN NATIONAL MUNICIPAL INCOME FUND AFB 0001610520 UBS Group AG BAHNHOFSTRASSE 45 PO BOX CH-8098 ZURICH V8 SWITZERLAND 0 0 1 0 Auction Preferred Stock 2018-12-19 4 J 0 1049 D 0 I By subsidiary - This Statement is filed jointly by UBS Group AG for the benefit and on behalf of UBS Securities LLC and UBS Financial Services Inc., two wholly owned subsidiaries of UBS Group AG to which UBS Group AG has delegated portions of its performance obligations with respect to the Auction Rate Securities Rights issued by UBS Group AG to certain clients and pursuant to which the securities reported herein have been purchased from such clients. This filing reports holdings of the Series of Auction Preferred Stock identified in Item 1 of this Table I on an aggregated basis. 98.75% of par (Cusip Nos 01864V203, 01864V302, 01864V401, 01864V500) *The relevant APS was redeemed by the issuer The Shares reported herein represent UBS Group AG's combined holdings in multiple series of auction preferred securities of the issuer, which are treated herein as one class of securities. By: /s/ Jennifer Sator, UBS Group AG 2018-12-21 By: /s/ William Chandler, UBS Group AG 2018-12-21