List of mergers and acquisitions by IBM

The following is a partial list of IBM precursors, acquisitions and spinoffs. IBM has undergone a large number of mergers and acquisitions during a corporate history lasting over a century; the company has also produced a number of spinoffs during that time.

The acquisition date listed is the date of the agreement between IBM and the subject of the acquisition. The value of each acquisition is listed in US$ because IBM is based in the United States. If the value of an acquisition is not listed, then it is undisclosed.

Precursors 1889–1910

  • 1889 Bundy Manufacturing Company incorporated.
  • 1891 Computing Scale Company incorporated.
  • 1893 Dey Patents Company (soon renamed the Dey Time Register Company) incorporated.
  • 1894 Willard & Frick Manufacturing Company (Rochester, New York) incorporated.
  • 1896
  • Detroit Automatic Scale Company incorporated.
  • The Tabulating Machine Company incorporated.
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