TERADATA CORP /DE/ — Director's Dealing 2010

Jun 7, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: TERADATA CORP /DE/ (TDC)
CIK: 0000816761
Period of Report: 2010-06-03

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-06-03	Common Stock	M	29031	$21.01	Acquired	163100.160	Direct
2010-06-03	Common Stock	S	29031	$32.778	Disposed	134069.160	Direct
2010-06-03	Common Stock	M	38722	$20.84	Acquired	172791.160	Direct
2010-06-03	Common Stock	S	24589	$32.728	Disposed	148828.834	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-06-03	Employee Stock Option	$21.01	M	29031	Disposed	2015-03-15	Common stock (29031)	Direct
2010-06-03	Employee Stock Option	$20.84	M	38722	Disposed	2016-02-13	Common Stock (38722)	Direct

Footnotes

F1: A total of 14,133 shares were held after shares sold to cover exercise price and taxes associated with the stock options exercised to purchase shares of Teradata stock on June 3, 2010.

F2: The total beneficial holdings on this report include 186.641 shares acquired under the Teradata Employee Stock Purchase Plan on February 26, 2010 and 440.033 shares acquired under the plan on March 31, 2010.

F3: The price in Column 4 is a weighted average price. The prices actually received ranged from $32.735 to $32.80. 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.

F4: The price in Column 4 is a weighted average price. The prices actually received ranged from $32.69 to $32.75. 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.

F5: This option is fully exercisable.