Form 144: 20,000 Restricted Shares Proposed for Sale

Morgan Stanley Smith Barney LLC notice of proposed sale of 20,000 restricted common shares under a registered plan.

Rhea-AI Filing Summary

Morgan Stanley Smith Barney LLC notice of proposed sale of 20,000 restricted common shares under a registered plan. The filing also shows 50,000 common shares sold on 02/26/2026 for $1,511,119.00.

The transaction is reported on Form 144 for securities of record at New York Plaza and identifies the seller as STEPHEN MCMILLAN with an address in San Diego, CA.

Key Figures

Proposed sale: 20,000 shares Recent sales reported: 50,000 shares Proceeds from recent sales: $1,511,119.00 +1 more

4 metrics

Proposed sale 20,000 shares restricted common shares under a registered plan dated 02/13/2023

Recent sales reported 50,000 shares sold on 02/26/2026 (past three months)

Proceeds from recent sales $1,511,119.00 consideration reported for 50,000 shares sold on 02/26/2026

Broker/dealer listed 1 (Morgan Stanley Smith Barney LLC) broker address 1 New York Plaza, 8th Floor, New York, NY 10004

Key Terms

Form 144, restricted stock vesting, registered plan

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

restricted stock vesting financial

"Restricted stock vesting under a registered plan"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

registered plan regulatory

"Restricted stock vesting under a registered plan dated 02/13/2023"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

FAQ

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

What does the TDC Form 144 disclose about shares to be sold?

The notice lists 20,000 restricted common shares proposed for sale under a registered plan. The filing labels these as restricted stock vesting under a registered plan dated 02/13/2023.

Who is the reporting seller on the Form 144 for TDC?

The seller is Stephen McMillan, listed with an address in San Diego, CA. The filer identifies Morgan Stanley Smith Barney LLC as the broker at New York Plaza.

Does the filing show recent sales in addition to the proposed sale?

Yes. The filing reports 50,000 common shares sold on 02/26/2026 for $1,511,119.00 during the past three months.

Which broker/dealer is listed on the Form 144?

Morgan Stanley Smith Barney LLC is identified as the broker/dealer, with an office at 1 New York Plaza, 8th Floor, New York, NY 10004 and an exchange noted as NYSE.

What date is associated with the restricted stock vesting in this filing?

The restricted stock vesting date is 02/13/2023, as shown in the securities-to-be-sold line describing the registered plan.

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

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Accepted by SEC EDGAR 05/12/2026 - 04:25 PM EDT 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	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	20000	634158.00	94100000	05/12/2026	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 vesting under a registered plan	Issuer			20000	02/13/2023	Not Applicable

* 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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
STEPHEN MCMILLAN 17095 Via Del Campo San Diego CA 92127	COMMON	02/26/2026	50000	1511119.00

144: Remarks and Signature

Remarks
Date of Notice	05/12/2026
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)