X0306 4/A 2020-06-09 2020-06-10 0 0000816761 TERADATA CORP /DE/ TDC 0001719723 MCMILLAN STEPHEN 17095 VIA DEL CAMPO SAN DIEGO CA 92127 1 1 0 0 President and CEO Common Stock 2020-06-09 4 A 0 200530 0.00 A 200530 D Common Stock 2020-06-09 4 A 0 146237 0.00 A 346767 D New-hire award of restricted share units which vests in three installments as follows: 45% of the units vest on December 1, 2020, 42% of the units vest on June 9, 2021, and the remainder of the units (i.e., 13% of the units) vest on June 9, 2022. The original Form 4 filed on behalf of the reporting person on June 10, 2020, incorrectly reported the award total as 566,122 instead of 200,530. This amendment is being filed to correct this amount which is also reflected in the total securities beneficially owned following the two reported transactions. The original Form 4 was timely filed and correct in all other respects. Award of restricted share units which vests in three equal annual installments beginning on June 9, 2021. Peter A. Christou, Attorney-in-fact for Stephen McMillan 2020-06-11