IBM International Business Machines Corporation

Company    INTERNATIONAL BUSINESS MACHINES CORPORATION

TIDM         IBM

Headline     Notification of filing of document

The Corporation has filed additional proxy materials with respect to its 2021 Annual Meeting on Form DEFA 14A dated April 6, 2021 with the United States Securities and Exchange Commission and
subsequently in Luxembourg with the Luxembourg Stock Exchange as the officially appointed mechanism for the central storage of regulated information and with the CSSF. The additional proxy materials
are available at www.sec.gov and www.bourse.lu.