SIGNATURES  Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. INTERNATIONAL BUSINESS MACHINES CORPORATION (Registrant) By: /s/ VIRGINIA M. ROMETTY Virginia M. Rometty Chairman of the Board, President and Chief Executive Officer Date: February 26, 2019 Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. Signature Title Date /s/ VIRGINIA M. ROMETTY Virginia M. Rometty Chairman of the Board, President and Chief Executive Officer February 26, 2019 /s/ JAMES J. KAVANAUGH James J. Kavanaugh Senior Vice President and Chief Financial Officer, Finance and Operations February 26, 2019 /s/ ROBERT F. DEL BENE Robert F. Del Bene Vice President and Controller (Chief Accounting Officer) February 26, 2019 By: /s/ CHRISTINA M. MONTGOMERY Christina M. Montgomery Attorney-in-fact February 26, 2019 Michael L. Eskew Director David N. Farr Director Alex Gorsky Director Shirley Ann Jackson Director Andrew N. Liveris Director James W. Owens Director Martha E. Pollack Director Sidney Taurel Director Peter R. Voser Director Frederick H. Waddell Director 30