STX Rule 144 notice: 989 restricted shares reported

STX — Rule 144 notice filed for restricted common stock transactions.

Rhea-AI Filing Summary

STX — Rule 144 notice filed for restricted common stock transactions. The filing lists 989 shares of restricted common stock associated with Morgan Stanley Smith Barney LLC Executive Financial Services with an effective date of 06/11/2026. The excerpt also reports three resale transactions by Ban Seng Teh in May–June 2026 (663, 8,003 and 7,557 shares) with transaction amounts shown alongside.

Key Figures

Shares to be sold: 989 shares Past sale — 06/10/2026: 663 shares Past sales — May 2026: 8,003 shares and 7,557 shares +1 more

4 metrics

Shares to be sold 989 shares Restricted common stock, effective 06/11/2026

Past sale — 06/10/2026 663 shares Ban Seng Teh resale, amount listed $544,893.18

Past sales — May 2026 8,003 shares and 7,557 shares Ban Seng Teh resales on 05/14/2026 and 05/13/2026 with amounts $6,540,725.45 and $6,147,253.74

Filer/Issuer listing Morgan Stanley Smith Barney LLC Executive Financial Services Issuer information shown on the Form 144 cover lines

Key Terms

Rule 144, Restricted Stock, Issuer

3 terms

Rule 144 regulatory

"Filing lines identify the notice type and list restricted stock sales"

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 financial

"The securities are labeled "Restricted Stock" with an effective date of 06/11/2026"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

Issuer regulatory

"Issuer shown as Morgan Stanley Smith Barney LLC Executive Financial Services on the cover"

FAQ

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

What does the STX Form 144 filing disclose?

The filing discloses a Rule 144 notice for 989 shares of restricted common stock with an effective date of 06/11/2026. It also lists recent dispositions by Ban Seng Teh in May–June 2026 with per‑trade share counts and amounts.

Who is the reported seller in the STX Form 144 excerpt?

The seller identified in the resale entries is Ban Seng Teh, with an address in Singapore. The excerpt shows three past sales: 663, 8,003 and 7,557 shares with corresponding transaction amounts.

What securities and source are listed in the filing?

The security type is listed as Common (restricted stock) tied to Morgan Stanley Smith Barney LLC Executive Financial Services. The filing labels the entries as Restricted Stock with the issuer shown and an effective date of 06/11/2026.

Do the past transactions show monetary values in the excerpt?

Yes. The resale lines show amounts alongside share counts: for example, one entry lists 663 shares with $544,893.18, and other May entries list $6,540,725.45 and $6,147,253.74 for the reported share counts.

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

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Accepted by SEC EDGAR 06/12/2026 - 04:05 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	989	870507.91	224228992	06/12/2026	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	06/11/2026	Restricted Stock	ISSUER			989	06/11/2026	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	06/10/2026	663	544893.18
BAN SENG TEH 121 Woodlands Avenue 5 Singapore U0 739009	Common	05/14/2026	8003	6540725.45
BAN SENG TEH 121 Woodlands Avenue 5 Singapore U0 739009	Common	05/13/2026	7557	6147253.74

144: Remarks and Signature

Remarks
Date of Notice	06/12/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	02/11/2026
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)