BlackRock (NYSE: BLK) discloses 16% beneficial ownership of Teradata (TDC)

Rhea-AI Filing Summary

BlackRock, Inc. filed an amended Schedule 13G reporting beneficial ownership of common stock of Teradata Corporation. BlackRock reported beneficial ownership of 15,077,980 shares, representing 16.0% of Teradata’s common stock.

BlackRock reported sole voting power over 14,920,372 shares and sole dispositive power over 15,077,980 shares, with no shared voting or dispositive power. The filing notes that one holder, iShares Core S&P Small-Cap ETF, has an interest exceeding five percent of Teradata’s outstanding common stock.

Key Figures

Shares beneficially owned: 15,077,980 shares Ownership percentage: 16.0 % Sole voting power: 14,920,372 shares +3 more

6 metrics

Shares beneficially owned 15,077,980 shares Teradata common stock reported as beneficially owned by BlackRock

Ownership percentage 16.0 % Percent of Teradata common stock class held by BlackRock

Sole voting power 14,920,372 shares Shares of Teradata over which BlackRock has sole voting power

Sole dispositive power 15,077,980 shares Shares of Teradata over which BlackRock has sole dispositive power

CUSIP 88076W103 CUSIP for Teradata Corporation common stock

Filing date signature 07/30/2026 Date signed by Managing Director Spencer Fleming

Key Terms

beneficially owned, Sole Voting Power, Sole Dispositive Power, percent of class, +1 more

5 terms

beneficially owned financial

"reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power financial

"5 | Sole Voting Power 14,920,372.00 6 | Shared Voting Power 0.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Sole Dispositive Power financial

"7 | Sole Dispositive Power 15,077,980.00 8 | Shared Dispositive Power 0.00"

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

percent of class financial

"(b) | Percent of class: 16.0 % (c) | Number of shares as to which"

Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.

Investment Company Act of 1940 regulatory

"investment company registered under the Investment Company Act of 1940 or the beneficiaries"

A U.S. federal law that sets the rulebook for pooled investment vehicles such as mutual funds, exchange-traded funds and similar money managers, requiring them to register with regulators, disclose holdings and fees, limit conflicts of interest, and follow governance standards. It matters to investors because these protections and transparency rules act like a referee and scoreboard, helping people compare funds, trust that managers follow fair practices, and spot hidden costs or risks.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What percentage of Teradata Corporation (TDC) does BlackRock now report owning?

BlackRock reports beneficial ownership of 16.0% of Teradata Corporation’s common stock. This corresponds to 15,077,980 shares as disclosed in the amended Schedule 13G filing.

How many Teradata (TDC) shares does BlackRock report as beneficially owned?

BlackRock reports 15,077,980 Teradata common shares as beneficially owned. This stake represents 16.0% of the company’s outstanding common stock according to the ownership section.

What voting power does BlackRock have over its Teradata (TDC) shares?

BlackRock has sole voting power over 14,920,372 shares of Teradata. It reports no shared voting power, indicating all reported voting authority is held on a sole basis.

What dispositive power over Teradata (TDC) shares does BlackRock report?

BlackRock reports sole dispositive power over 15,077,980 shares of Teradata common stock. It reports no shared dispositive power, meaning only sole authority is disclosed for these shares.

Which BlackRock-related holder has more than 5% of Teradata (TDC)?

The filing states that iShares Core S&P Small-Cap ETF has an interest in Teradata’s common stock that is more than five percent of the company’s total outstanding common stock.

What type of security in Teradata (TDC) is reported in BlackRock’s Schedule 13G/A?

The reported security is Teradata Corporation common stock, identified with CUSIP 88076W103, as specified in the title of class of securities and CUSIP items.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 4)

TERADATA CORPORATION

(Name of Issuer)

Common Stock

(Title of Class of Securities)

88076W103

(CUSIP Number)

06/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 88076W103

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 14,920,372.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 15,077,980.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

15,077,980.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

16.0 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: TERADATA CORPORATION
(b)	Address of issuer's principal executive offices: 17095 VIA DEL CAMPO SAN DIEGO CA 92127
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 88076W103
Item 4.	Ownership
(a)	Amount beneficially owned: 15077980
(b)	Percent of class: 16.0 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 14920372
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 15077980
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The interest of 1 such person, iShares Core S&P Small-Cap ETF, in the common stock of TERADATA CORPORATION is more than five percent of the total outstanding common stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	07/30/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7