TERADATA CORP /DE/ — Director's Dealing 2010

Feb 19, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TERADATA CORP /DE/ (TDC)
CIK: 0000816761
Period of Report: 2010-02-17

Reporting Person: McDonald Darryl (Chief Marketing Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-17	Common Stock	M	37105	$11.26	Acquired	82919.112	Direct
2010-02-17	Common Stock	S	37105	$29.475	Disposed	45814.112	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-02-17	Employee Stock Option	$11.26	M	37105	Disposed	2010-04-10	Common Stock (37105)	Direct

Footnotes

F1: The price in Column 4 is a weighted average price. The prices actually received ranged from $29.40 to $29.57. The reporting person has provided to the issuer and will provide any security holder of the issuer or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

F2: This option is fully exercisable.