Mosley William D's Form 4 filing
Seagate Technology Holdings plcSTX · filed Aug 4, 2026
- Accession no.
- 0001137789-26-000163
- Filed
- Aug 4, 2026, 6:09 PM ET
- Trade date
- Aug 3, 2026
- Filing delay
- 1 day
- Rule 10b5-1 plan
- Checked
This filing lists 30 non-derivative transactions and 1 derivative transaction. Open-market sales total $10.4M. It was filed 1 day after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Mosley William DCIK 0001388390 | Director, Officer (CEO) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 3, 2026 | Ordinary Shares | MOption exerciseAcquired | +14,000 | $46.23 | +$647,220 | 325,517 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −80 | $783.84F2 | −$62,706.8 | 325,437 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −40 | $786.12 | −$31,444.8 | 325,397 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −160 | $787.77F3 | −$126,042.8 | 325,237 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −120 | $789.55F4 | −$94,745.6 | 325,117 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −440 | $790.98F5 | −$348,032.39 | 324,677 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −711 | $792.72F6 | −$563,625.98 | 323,966 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −480 | $793.70F7 | −$380,977.2 | 323,486 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −368 | $794.39F8 | −$292,334.53 | 323,118 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −761 | $795.81F9 | −$605,614.99 | 322,357 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −680 | $797.04F10 | −$541,989.58 | 321,677 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −560 | $797.85F11 | −$446,794.82 | 321,117 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −480 | $799.27F12 | −$383,648.4 | 320,637 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −520 | $800.08F13 | −$416,040.82 | 320,117 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −400 | $801.05F14 | −$320,418 | 319,717 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −360 | $802.08F15 | −$288,749.99 | 319,357 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −520 | $803.73F16 | −$417,938.82 | 318,837 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −840 | $804.73F17 | −$675,975.22 | 317,997 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −640 | $806.47F18 | −$516,138.82 | 317,357 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −280 | $807.65F19 | −$226,141.61 | 317,077 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −697 | $808.72F20 | −$563,681.19 | 316,380 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −383 | $809.71F21 | −$310,118.7 | 315,997 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −520 | $810.44F22 | −$421,426.82 | 315,477 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −640 | $811.82F23 | −$519,563.46 | 314,837 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −400 | $812.84F24 | −$325,134.4 | 314,437 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −366 | $814.07F25 | −$297,951.23 | 314,071 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −394 | $814.99F26 | −$321,106.81 | 313,677 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −320 | $815.87F27 | −$261,079.2 | 313,357 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −440 | $817.17F28 | −$359,554.01 | 312,917 | Direct | |
| Aug 3, 2026 | Ordinary Shares | SSaleDisposed | −320 | $818.32F29 | −$261,860.8 | 312,597 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 3, 2026 | Ordinary Shares | MOption exerciseDisposed | −14,000 | $0.00 | $0 | 111,100 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F2
These Ordinary Shares were sold in multiple trades at prices ranging from $783.83 to $783.84. 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.
Referenced by the price of 1 transaction in Table I.
- F3
These Ordinary Shares were sold in multiple trades at prices ranging from $787.71 to $787.79. 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.
Referenced by the price of 1 transaction in Table I.
- F4
These Ordinary Shares were sold in multiple trades at prices ranging from $789.02 to $789.84. 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.
Referenced by the price of 1 transaction in Table I.
- F5
These Ordinary Shares were sold in multiple trades at prices ranging from $790.50 to $791.22. 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.
Referenced by the price of 1 transaction in Table I.
- F6
These Ordinary Shares were sold in multiple trades at prices ranging from $792.17 to $793.13. 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.
Referenced by the price of 1 transaction in Table I.
- F7
These Ordinary Shares were sold in multiple trades at prices ranging from $793.19 to $794.18. 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.
Referenced by the price of 1 transaction in Table I.
- F8
These Ordinary Shares were sold in multiple trades at prices ranging from $794.22 to $795.04. 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.
Referenced by the price of 1 transaction in Table I.
- F9
These Ordinary Shares were sold in multiple trades at prices ranging from $795.32 to $796.19. 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.
Referenced by the price of 1 transaction in Table I.
- F10
These Ordinary Shares were sold in multiple trades at prices ranging from $796.39 to $797.35. 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.
Referenced by the price of 1 transaction in Table I.
- F11
These Ordinary Shares were sold in multiple trades at prices ranging from $797.41 to $798.36. 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.
Referenced by the price of 1 transaction in Table I.
- F12
These Ordinary Shares were sold in multiple trades at prices ranging from $798.60 to $799.58. 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.
Referenced by the price of 1 transaction in Table I.
- F13
These Ordinary Shares were sold in multiple trades at prices ranging from $799.64 to $800.58. 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.
Referenced by the price of 1 transaction in Table I.
- F14
These Ordinary Shares were sold in multiple trades at prices ranging from $800.70 to $801.31. 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.
Referenced by the price of 1 transaction in Table I.
- F15
These Ordinary Shares were sold in multiple trades at prices ranging from $801.71 to $802.65. 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.
Referenced by the price of 1 transaction in Table I.
- F16
These Ordinary Shares were sold in multiple trades at prices ranging from $803.19 to $804.17. 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.
Referenced by the price of 1 transaction in Table I.
- F17
These Ordinary Shares were sold in multiple trades at prices ranging from $804.38 to $805.19. 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.
Referenced by the price of 1 transaction in Table I.
- F18
These Ordinary Shares were sold in multiple trades at prices ranging from $806.12 to $807.01. 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.
Referenced by the price of 1 transaction in Table I.
- F19
These Ordinary Shares were sold in multiple trades at prices ranging from $807.14 to $807.99. 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.
Referenced by the price of 1 transaction in Table I.
- F20
These Ordinary Shares were sold in multiple trades at prices ranging from $808.18 to $809.09. 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.
Referenced by the price of 1 transaction in Table I.
- F21
These Ordinary Shares were sold in multiple trades at prices ranging from $809.20 to $810.08. 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.
Referenced by the price of 1 transaction in Table I.
- F22
These Ordinary Shares were sold in multiple trades at prices ranging from $810.20 to $811.08. 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.
Referenced by the price of 1 transaction in Table I.
- F23
These Ordinary Shares were sold in multiple trades at prices ranging from $811.38 to $812.36. 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.
Referenced by the price of 1 transaction in Table I.
- F24
These Ordinary Shares were sold in multiple trades at prices ranging from $812.39 to $813.20. 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.
Referenced by the price of 1 transaction in Table I.
- F25
These Ordinary Shares were sold in multiple trades at prices ranging from $813.42 to $814.40. 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.
Referenced by the price of 1 transaction in Table I.
- F26
These Ordinary Shares were sold in multiple trades at prices ranging from $814.43 to $815.31. 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.
Referenced by the price of 1 transaction in Table I.
- F27
These Ordinary Shares were sold in multiple trades at prices ranging from $815.65 to $816.17. 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.
Referenced by the price of 1 transaction in Table I.
- F28
These Ordinary Shares were sold in multiple trades at prices ranging from $816.65 to $817.59. 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.
Referenced by the price of 1 transaction in Table I.
- F29
These Ordinary Shares were sold in multiple trades at prices ranging from $817.74 to $818.58. 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.
Referenced by the price of 1 transaction in Table I.