Teradata (TDC) CEO McMillan reports 40,319-share tax-withholding disposition

Rhea-AI Filing Summary

Teradata Corporation’s President and CEO, Stephen McMillan, reported a tax-related share disposition. On the transaction date, 40,319 shares of common stock were withheld by the company at $30.36 per share to satisfy tax obligations upon the vesting of restricted share units. After this withholding transaction, McMillan directly owned 602,781 shares of Teradata common stock.

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)
03/03/2026

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	03/03/2026		F		40,319(1)	D	$30.36	602,781	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. Shares withheld by the company to satisfy tax obligation upon vesting of restricted share units.

Remarks:

	/s/ Juliet C. Shadoan, Attorney-in-fact for Stephen McMillan	03/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

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

Teradata reported that CEO Stephen McMillan had 40,319 shares of common stock withheld by the company to cover tax obligations when restricted share units vested, rather than executing an open-market sale. This is characterized as a tax-withholding disposition of existing equity awards.

How many Teradata (TDC) shares were involved in Stephen McMillan’s tax-withholding disposition?

The transaction involved 40,319 shares of Teradata common stock. These shares were withheld by the company at $30.36 per share to satisfy McMillan’s tax obligations triggered by the vesting of restricted share units, according to the filed Form 4 details.

What was Stephen McMillan’s Teradata (TDC) share ownership after the reported transaction?

Following the tax-withholding disposition, Stephen McMillan directly owned 602,781 shares of Teradata common stock. This figure reflects his direct holdings after the company withheld 40,319 shares to meet tax obligations associated with vesting restricted share units.

Was Stephen McMillan’s Teradata (TDC) transaction an open-market sale of shares?

No. The Form 4 describes the transaction as shares withheld by the company to satisfy tax obligations upon vesting of restricted share units. This tax-withholding disposition is different from an open-market sale initiated to realize cash proceeds from share sales.

What does the transaction code F mean in Teradata (TDC) CEO’s Form 4 filing?

Transaction code F indicates payment of an exercise price or tax liability by delivering securities. In this case, Teradata withheld 40,319 common shares from Stephen McMillan to cover tax obligations arising when his restricted share units vested, instead of a conventional market sale.