Shares in Issue

International Business Machine Corporation
22 October 1999



Below is a schedule summarizing the changes in the number of shares of IBM
capital stock issued and reserved for issuance during the third quarter of 1999.

IBM Treasury stock activity, for the various employee and stockholder plans, was
as follows for the quarter ended September 30, 1999, on a trade date basis:

                                                  Shares

Balance - June 30, 1999                           40,779,164
Acquisitions                                      12,584,968
Reissuances                                       (1,277,107)

Balances - September 30, 1999                     52,087,025