(TDC)

Reporting relationship: President and CEO, Director
Issuer ticker: TDC
Reported as of: 15 Sep 2026
Net transaction value: -$300,170
SEC form: 4
Accepted by SEC: 17 Sep 2026, 14:09:31 UTC
Prior SEC filing: 26 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Irving Gomez, Attorney-in-fact for Stephen McMillan

Key filing fact

Stephen McMillan filed Form 4 for TERADATA CORP /DE/ (TDC) on 17 Sep 2026.

Key facts

This page summarizes Stephen McMillan's Form 4 filing for TERADATA CORP /DE/ (TDC).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 17 Sep 2026, 14:09.

Change

Previous filing in this sequence was filed on 26 May 2026.
Current net transaction value: -$300,170.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001719723 Primary reporting owner

MCMILLAN STEPHEN

Relationship: President and CEO, Director
Address: C/O TERADATA CORPORATION, 17095 VIA DEL CAMPO, SAN DIEGO
Signature: /s/ Irving Gomez, Attorney-in-fact for Stephen McMillan
Signature date: 17 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

TDC transaction

Common Stock

Sale

Transaction value: $300,170
Shares: -10,000
Change %: -1.3%
Price: $30.02
Shares after: 752,446
Date: 15 Sep 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 2 footnotes

Footnote F1

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

Footnote F2

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.