Teradata (TDC) director Michael Gianoni sells 25,000 shares in open market

Rhea-AI Filing Summary

Teradata Corporation director Michael P. Gianoni reported an open-market sale of 25,000 shares of common stock. The transaction took place at an average price of $29.965 per share. After this sale, he directly owns 31,523 shares of Teradata common stock.

Insider Trade Summary

Net Seller: 25,000 shares ($749,125)

Net Sell 1 txn

Insider Gianoni Michael P

Role Director

Sold 25,000 shs ($749K)

Type	Security	Shares	Price	Value
Sale	Common Stock	25,000	$29.965	$749K

Holdings After Transaction: Common Stock — 31,523 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Gianoni Michael P

(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
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
02/24/2026

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	02/24/2026		S		25,000	D	$29.965	31,523	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:

Remarks:

	/s/ Juliet C. Shadoan, Attorney-in-fact for Michael P. Gianoni	02/25/2026
	** 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) director Michael P. Gianoni report?

Michael P. Gianoni reported selling 25,000 shares of Teradata common stock in an open-market transaction. The sale was recorded at an average price of $29.965 per share, reflecting a discretionary disposition of directly held shares by a company director.

How many Teradata (TDC) shares does Michael P. Gianoni own after the reported sale?

After the reported transaction, Michael P. Gianoni directly owns 31,523 shares of Teradata common stock. This post-transaction balance reflects his remaining direct equity stake following the open-market sale of 25,000 shares disclosed in the Form 4 insider filing.

Was Michael P. Gianoni’s Teradata (TDC) trade a buy or a sell?

The transaction was a sell. Michael P. Gianoni executed an open-market sale of 25,000 shares of Teradata common stock, as indicated by transaction code “S” and the classification as a sale in open market or private transaction in the filing data.

At what price did Michael P. Gianoni sell Teradata (TDC) shares in this Form 4?

He sold the Teradata shares at an average price of $29.965 per share. This price represents the per-share consideration for the 25,000 shares of common stock disposed of in the open-market sale reported in the insider filing.

What does the net-sell direction mean in Teradata (TDC) director Michael P. Gianoni’s Form 4?

Net-sell direction means total reported sales exceeded purchases during the period. In this case, Michael P. Gianoni reported selling 25,000 Teradata shares and no purchases, resulting in a net reduction of his directly held common stock position in the company.