Teradata: Stephen McMillan proposes $293.7K stock sale

Teradata executive Stephen McMillan filed a Rule 144 notice to potentially sell 10,000 TDC common shares worth about $293,700 around September 15, 2026.

Rhea-AI Filing Summary

TERADATA CORP (TDC) has a notice of proposed sale under Rule 144 by Stephen McMillan covering up to 10,000 shares of common stock through Morgan Stanley Smith Barney LLC, with an approximate aggregate market value of $293,700 and an approximate sale date of September 15, 2026.

The securities relate to Restricted Stock Units acquired on February 13, 2023. For this class of common stock, 93,000,000 shares were reported as outstanding in connection with this notice.

Key Figures

Shares proposed to be sold: 10,000 shares Approximate aggregate market value: $293,700 Shares outstanding for the class: 93,000,000 shares +2 more

5 metrics

Shares proposed to be sold 10,000 shares Common stock covered by the Rule 144 notice for Stephen McMillan

Approximate aggregate market value $293,700 Value of the 10,000 Teradata common shares in the proposed sale

Shares outstanding for the class 93,000,000 shares Common stock outstanding for the class referenced in the Form 144

Approximate date of sale September 15, 2026 Planned timing for the proposed Rule 144 transaction

Acquisition date of related RSUs February 13, 2023 Date the Restricted Stock Units related to these shares were acquired

Key Terms

Rule 144, Restricted Stock Units, Approximate Aggregate Market Value

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Common | 02/13/2023 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Approximate Aggregate Market Value financial

"Common | Morgan Stanley Smith Barney LLC ... | 10000 | 293700.00"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does the Form 144 filing disclose for TERADATA CORP (TDC)?

It discloses a proposed Rule 144 sale by Stephen McMillan of up to 10,000 shares of Teradata common stock, with an approximate aggregate market value of $293,700, to be sold through Morgan Stanley Smith Barney LLC.

How many TERADATA (TDC) shares are covered by Stephen McMillan’s Form 144?

The notice covers up to 10,000 shares of Teradata common stock for potential sale under Rule 144. These shares are associated with Restricted Stock Units acquired on February 13, 2023.

What is the approximate value of the TDC shares in this Form 144 filing?

The filing lists an approximate aggregate market value of $293,700 for the 10,000 Teradata common shares covered by the proposed Rule 144 sale.

When is the approximate sale date in the TERADATA (TDC) Form 144?

The Form 144 states an approximate date of sale of September 15, 2026 for the proposed disposition of the 10,000 Teradata common shares.

How many TERADATA (TDC) shares were reported outstanding in the Form 144?

The notice reports 93,000,000 shares of Teradata common stock outstanding for the class involved in the proposed Rule 144 sale; this is a baseline figure, not the amount being sold.

Which broker is named for the proposed TERADATA (TDC) Rule 144 sale?

The Form 144 lists Morgan Stanley Smith Barney LLC Executive Financial Services, at One New York Plaza, as the broker for the proposed sale of the 10,000 Teradata common shares on the NYSE.

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

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Available on EDGAR 09/15/2026 - 04:35 PM Accepted by SEC EDGAR 09/15/2026 - 04:34 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001719723
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	TERADATA CORPORATION
SEC File Number	001-33458
Address of Issuer	17095 Via Del Campo San Diego CALIFORNIA 92127
Phone	(866)548-8348
Name of Person for Whose Account the Securities are To Be Sold	STEPHEN MCMILLAN
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	10000	293700.00	93000000	09/15/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/13/2023	Restricted Stock Units	Issuer			10000	02/13/2023	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	09/15/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/18/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Stephen McMillan
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)