Teradata (TDC) CEO Stephen McMillan sells 50,000 shares in open market

Rhea-AI Filing Summary

Teradata Corporation director and CEO Stephen McMillan sold 50,000 shares of common stock in an open-market transaction. The weighted average sale price was $30.2625 per share, based on multiple trades between $30.015 and $30.545. After this sale, he directly holds 663,190 Teradata shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

MCMILLAN STEPHEN

(Last) (First) (Middle)

C/O TERADATA CORPORATION

17095 VIA DEL CAMPO

(Street)

SAN DIEGO CA 92127

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
TERADATA CORP /DE/ [ TDC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President and CEO

3. Date of Earliest Transaction (Month/Day/Year)
02/26/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	02/26/2026		S		50,000	D	$30.2625(1)	663,190	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.015 to $30.545. 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.

Remarks:

	/s/ Juliet C. Shadoan, Attorney-in-fact for Stephen McMillan	02/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Teradata (TDC) report for Stephen McMillan?

Teradata reported that CEO and director Stephen McMillan sold 50,000 shares of common stock in an open-market transaction. The filing shows it as a routine sale, with his remaining direct ownership at 663,190 shares after the transaction was completed.

How many Teradata (TDC) shares did the CEO sell and at what price?

Stephen McMillan sold 50,000 Teradata common shares. The weighted average sale price was $30.2625 per share, across multiple trades executed within a price range from $30.015 to $30.545, as detailed in the Form 4 footnote disclosure.

How many Teradata (TDC) shares does the CEO own after this Form 4 transaction?

After the reported sale, Stephen McMillan directly owns 663,190 shares of Teradata common stock. This figure reflects his holdings immediately following the 50,000-share open-market sale described in the Form 4, and the ownership is reported as direct, not through an intermediary entity.

Was the Teradata (TDC) CEO sale a single trade or multiple trades?

The CEO’s sale was executed as multiple trades, not a single block. The Form 4 notes a weighted average price of $30.2625, with individual trades occurring between $30.015 and $30.545 per share, and offers to provide detailed trade breakdowns upon request.

What does the Form 4 say about how the Teradata (TDC) CEO transaction was executed?

The filing classifies the transaction as an open-market sale of common stock. It specifies transaction code “S,” meaning a sale in open market or private transaction, and indicates the shares are held and transacted under Stephen McMillan’s direct ownership, rather than indirectly through another entity.