TDC · Teradata Corp /De/ · Insider Trading

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on May 7, 2026.

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on May 18, 2026.

The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.00 to $30.05. 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.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on December 5, 2025.

The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $35.00 to $35.08. 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.

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on December 5, 2025.

The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.45 to $33.5202. 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.

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date. The reporting person has elected to defer receipt of the shares until five years from the date of grant.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date. The reporting person has elected to defer receipt of the shares until termination of service as a director.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date. The reporting person has elected to defer receipt of the shares until after the termination of service as a director.

Award of restricted share units issued under the Director Compensation Program. The units vest in four equal quarterly installments commencing three months after the grant date.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.40 to $32.10. 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.

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on December 5, 2025.

Sale of shares pursuant to Rule 10b5-1 trading plan adopted by the Reporting Person on December 9, 2025.

These shares will be transferred to the former spouse of the reporting person pursuant to the terms of a court-approved divorce agreement. Following the transfer, the reporting person will no longer have a reportable beneficial ownership in these shares.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Award of restricted share units which vests in three equal annual installments beginning on March 1, 2027.

Award of restricted share units which vests in three equal annual installments beginning on March 1, 2027.

Award of restricted share units which vests in three equal annual installments beginning on March 1, 2027.

Award of restricted share units issued under the Director Compensation Program in connection with Ms. Fisher's election to the board of directors. The units vest in four equal, quarterly installments commencing three months after the grant date.

Award of restricted share units which vests in three equal annual installments beginning on March 1, 2027.

Award of restricted share units which vests in three equal annual installments beginning on March 1, 2027.

Award of restricted share units issued under the Director Compensation Program in connection with Ms. Fisher's election to the board of directors. The units vest in four equal, quarterly installments commencing three months after the grant date.

Award of restricted share units which vests in three equal annual installments beginning on March 1, 2027.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.