TERADATA CORP /DE/ — Director's Dealing 2013

May 8, 2013

SEC Form 4/A — Form 4/A

Issuer: TERADATA CORP /DE/ (TDC)
CIK: 0000816761
Period of Report: 2013-02-14

Reporting Person: KOEHLER MICHAEL (Director, President and CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2013-02-14	Common Stock	F	17697	$62.15	Disposed	171851	Direct

Footnotes

F1: This amendment is being filed solely to correct (by reducing by 15,091) the total beneficial holdings reported in Column 5 of Table 1 of the original Form 4 of the reporting person filed February 19, 2013. The original Form 4 was timely filed and correct in all other respects.

F2: Shares withheld by the company and disposted of to satisfy tax obligation for performance-based restricted stock units that vested on February 14, 2013.