Key facts
- This page summarizes William D. Mosley's Form 4/A - Amendment filing for Seagate Technology Holdings plc (STX).
- 9 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 04 Jun 2025, 16:23.
William D. Mosley - 22 May 2025 Form 4/A - Amendment Insider Report for Seagate Technology Holdings plc (STX)
- Reporting relationship
- Chief Executive Officer, Director
- Issuer ticker
- STX
- Reported as of
- 22 May 2025
- Net transaction value
- -$2,185,048
- SEC form
- 4/A - Amendment
- Accepted by SEC
- 04 Jun 2025, 16:23:43 UTC
- Original report date
- 23 May 2025
- Prior SEC filing
- 02 Apr 2025
- Next SEC filing
- 04 Jun 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley
Source evidence
Original filing metadata and source links for verification.
6 source fields
Reporting owner
1 detail
Key filing fact
William D. Mosley filed Form 4/A - Amendment for Seagate Technology Holdings plc (STX) on 04 Jun 2025.
Change
- Previous filing in this sequence was filed on 02 Apr 2025.
- Current net transaction value: -$2,185,048.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4/A - Amendment disclosures.
Reporting Owners (1)
CIK 0001388390
Primary reporting owner
MOSLEY WILLIAM D
- Relationship
- Chief Executive Officer, Director
- Address
- SEAGATE TECHNOLOGY HOLDINGS PLC, 47488 KATO ROAD, FREMONT
- Signature
- /s/ Louis J. Thorson, Attorney-in-Fact for William D. Mosley
- Signature date
- 04 Jun 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
STX
transaction
Ordinary Shares
Options Exercise
- Transaction value
- $2,739,000
- Shares
- +50,000
- Change %
- +9%
- Price
- $54.78
- Shares after
- 605,677
- Date
- 22 May 2025
- Ownership
- Direct
- Footnotes
- F1
STX
transaction
Ordinary Shares
Sale
- Transaction value
- $190,794
- Shares
- -1,800
- Change %
- -0.3%
- Price
- $106.00
- Shares after
- 603,877
- Date
- 22 May 2025
- Ownership
- Direct
- Footnotes
- F2
STX
transaction
Ordinary Shares
Sale
- Transaction value
- $411,241
- Shares
- -3,828
- Change %
- -0.63%
- Price
- $107.43
- Shares after
- 600,049
- Date
- 22 May 2025
- Ownership
- Direct
- Footnotes
- F3
STX
transaction
Ordinary Shares
Sale
- Transaction value
- $840,557
- Shares
- -7,777
- Change %
- -1.3%
- Price
- $108.08
- Shares after
- 592,272
- Date
- 22 May 2025
- Ownership
- Direct
- Footnotes
- F4
STX
transaction
Ordinary Shares
Sale
- Transaction value
- $565,956
- Shares
- -5,195
- Change %
- -0.88%
- Price
- $108.94
- Shares after
- 587,077
- Date
- 22 May 2025
- Ownership
- Direct
- Footnotes
- F5
STX
transaction
Ordinary Shares
Sale
- Transaction value
- $5,610,076
- Shares
- -51,000
- Change %
- -8.7%
- Price
- $110.00
- Shares after
- 536,077
- Date
- 22 May 2025
- Ownership
- Direct
- Footnotes
- F6
STX
transaction
Ordinary Shares
Sale
- Transaction value
- $44,424
- Shares
- -400
- Change %
- -0.07%
- Price
- $111.06
- Shares after
- 535,677
- Date
- 22 May 2025
- Ownership
- Direct
- Footnotes
- F7
STX
transaction
Ordinary Shares
Options Exercise
- Transaction value
- $2,739,000
- Shares
- +50,000
- Change %
- +11%
- Price
- $54.78
- Shares after
- 515,677
- Date
- 03 Jun 2025
- Ownership
- Direct
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
STX
transaction
Derivative
NQ Stock Options
Options Exercise
- Transaction value
- $0
- Shares
- -50,000
- Change %
- -32%
- Price
- $0.000000
- Shares after
- 104,347
- Date
- 22 May 2025
- Ownership
- Direct
- Underlying class
- Ordinary Shares
- Underlying amount
- 50,000
- Exercise price
- $54.78
- Footnotes
- F8
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Rule 10b5-1 trading plan
These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.
Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).
Explanation of responses 8 footnotes
Footnote F1
All transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.
Footnote F2
These Ordinary Shares were sold in multiple trades at prices ranging from $105.66 to $106.50. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
Footnote F3
These Ordinary Shares were sold in multiple trades at prices ranging from $106.67 to $107.65. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
Footnote F4
These Ordinary Shares were sold in multiple trades at prices ranging from $107.68 to $108.67. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
Footnote F5
These Ordinary Shares were sold in multiple trades at prices ranging from $108.69 to $109.59. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
Footnote F6
These Ordinary Shares were sold in multiple trades at prices ranging from $109.76 to $110.74. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
Footnote F7
These Ordinary Shares were sold in multiple trades at prices ranging from $110.96 to $111.17. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares and prices at which the transaction was effected.
Footnote F8
Options granted to the Reporting Person under the Issuer's 2012 Equity Incentive Plan are subject to a four year vesting schedule. One quarter of the option shares vested on September 9, 2020. The remaining option shares vest in equal monthly installments over the 36 months following September 9, 2020.