Insider plans 20,195-share sale under Form 144

Form 144 discloses that Ban Seng Teh plans to sell 20,195 shares of common stock through Morgan Stanley Smith Barney on NASDAQ, with an aggregate market value of $8,931,995.23.

Rhea-AI Filing Summary

Form 144 discloses that Ban Seng Teh plans to sell 20,195 shares of common stock through Morgan Stanley Smith Barney on NASDAQ, with an aggregate market value of $8,931,995.23. The issuer has 213,558,113 shares outstanding and the approximate sale date is 01/29/2026.

The shares to be sold were acquired in 2025–2026 through an employee stock purchase plan, restricted stock, stock option exercises, and performance shares. The filing also lists earlier sales in the past three months, including 6,000 shares sold on 11/05/2025 for $1,620,000.00.

FAQ

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What does the STX Form 144 filing by Ban Seng Teh disclose?

The filing shows Ban Seng Teh intends to sell 20,195 shares of common stock with an aggregate market value of $8,931,995.23. The planned sale will be executed through Morgan Stanley Smith Barney on NASDAQ around 01/29/2026.

How many STX shares are outstanding in this Form 144 notice?

The notice states that the issuer has 213,558,113 shares of common stock outstanding. This figure provides context for the planned sale of 20,195 shares, helping investors understand the relative size of the transaction versus the total equity base.

How were the STX shares in this Form 144 acquired by Ban Seng Teh?

The shares were acquired through several equity programs in 2025–2026, including an Employee Stock Purchase Plan, restricted stock awards, stock option exercises, and performance shares. Each acquisition lists dates, share amounts, and whether payment was in cash or not applicable.

What prior STX stock sales are disclosed in the last 3 months?

The filing lists several past three‑month sales by Ban Seng Teh, including 6,000 shares sold on 11/05/2025 for $1,620,000.00 and 2,010 shares on 12/11/2025 for $594,759.00, plus additional smaller transactions.

Which broker will handle the planned STX share sale in this Form 144?

The planned sale of 20,195 common shares will be handled by Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004, with the shares to be sold on NASDAQ.

What representation does the seller make in the STX Form 144 filing?

The seller represents that they do not know any material adverse information about the issuer’s current or prospective operations that has not been publicly disclosed, and acknowledges that intentional misstatements or omissions can constitute Federal criminal violations under 18 U.S.C. 1001.

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Accepted by SEC EDGAR 01/29/2026 - 06:35 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	0001801425
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	SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMITED COMPANY
SEC File Number	001-31560
Address of Issuer	121 Woodlands Avenue 5 Singapore SINGAPORE 739009
Phone	(65) 6018-2562
Name of Person for Whose Account the Securities are To Be Sold	BAN SENG TEH
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	20195	8931995.23	213558113	01/29/2026	NASDAQ

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	01/31/2025	Employee Stock Purchase Plan	Issuer			252	01/31/2025	Cash
Common	09/11/2025	Restricted Stock	Issuer			989	09/11/2025	Not Applicable
Common	01/29/2026	Stock Option Exercise	Issuer			9433	01/29/2026	Cash
Common	09/14/2025	Performance Shares	Issuer			7869	09/14/2025	Not Applicable
Common	12/11/2025	Restricted Stock	ISsuer			989	12/11/2025	Not Applicable
Common	12/09/2025	Restricted Stock	Issuer			663	12/09/2025	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
BAN SENG TEH 121 Woodlands Avenue 5 Singapore U0 739009	Common	12/11/2025	2010	594759.00
BAN SENG TEH 121 Woodlands Avenue 5 Singapore U0 739009	Common	11/11/2025	1412	408039.76
BAN SENG TEH 121 Woodlands Avenue 5 Singapore U0 739009	Common	11/05/2025	6000	1620000.00
BAN SENG TEH 121 Woodlands Avenue 5 Singapore U0 739009	Common	01/12/2026	1412	422625.72

144: Remarks and Signature

Remarks
Date of Notice	01/29/2026
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/ Banseng Teh
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)