Mosley William D's Form 4 filing
Seagate Technology Holdings plc (STX) · filed Jun 2, 2026
- Accession no.
- 0001137789-26-000116
- Filed
- Jun 2, 2026
- Trade date
- Jun 1, 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 $14.6M. 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 |
|---|---|---|---|---|---|---|---|---|
| Jun 1, 2026 | Ordinary Shares | MOption exerciseAcquired | +14,000 | $46.23 | +$647,220 | 353,591 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −600 | $884.62F2 | −$530,772 | 352,991 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −360 | $885.67F3 | −$318,841.2 | 352,631 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −360 | $886.72F4 | −$319,219.2 | 352,271 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −240 | $887.72F5 | −$213,052.8 | 352,031 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −163 | $888.89F6 | −$144,889.07 | 351,868 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −640 | $889.94F7 | −$569,561.6 | 351,228 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −1,160 | $890.98F8 | −$1,033,536.8 | 350,068 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −760 | $892.06F9 | −$677,965.6 | 349,308 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −208 | $893.00F10 | −$185,744 | 349,100 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −480 | $894.20F11 | −$429,216 | 348,620 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −481 | $895.45F12 | −$430,711.45 | 348,139 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −320 | $896.43F13 | −$286,857.6 | 347,819 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −280 | $897.43F14 | −$251,280.4 | 347,539 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −813 | $898.41F15 | −$730,407.33 | 346,726 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −160 | $899.27F16 | −$143,883.2 | 346,566 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −320 | $900.54F17 | −$288,172.8 | 346,246 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −860 | $901.56F18 | −$775,341.6 | 345,386 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −839 | $902.62F19 | −$757,298.18 | 344,547 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −779 | $903.78F20 | −$704,044.62 | 343,768 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −879 | $904.70F21 | −$795,231.3 | 342,889 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −740 | $905.76F22 | −$670,262.4 | 342,149 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −1,285 | $906.79F23 | −$1,165,225.15 | 340,864 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −760 | $907.75F24 | −$689,890 | 340,104 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −853 | $909.18F25 | −$775,530.54 | 339,251 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −600 | $910.15F26 | −$546,090 | 338,651 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −480 | $911.03F27 | −$437,294.4 | 338,171 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −320 | $912.22F28 | −$291,910.4 | 337,851 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −280 | $914.61F29 | −$256,090.8 | 337,571 | Direct | |
| Jun 1, 2026 | Ordinary Shares | SSaleDisposed | −200 | $915.52F30 | −$183,104 | 337,371 | 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 |
|---|---|---|---|---|---|---|---|---|
| Jun 1, 2026 | Ordinary Shares | MOption exerciseDisposed | −14,000 | $0.00 | $0 | 139,100 | 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 $884.23 to $885.22. 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.
- F3
These Ordinary Shares were sold in multiple trades at prices ranging from $885.23 to $886.21. 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 $886.37 to $887.03. 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 $887.37 to $888.15. 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 $888.42 to $889.34. 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 $889.50 to $890.36. 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.
- F8
These Ordinary Shares were sold in multiple trades at prices ranging from $890.53 to $891.50. 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.
Referenced by the price of 1 transaction in Table I.
- F9
These Ordinary Shares were sold in multiple trades at prices ranging from $891.71 to $892.52. 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 $892.71 to $893.17. 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.
- F11
These Ordinary Shares were sold in multiple trades at prices ranging from $893.78 to $894.62. 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 $894.83 to $895.80. 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 $895.92 to $896.72. 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 $896.93 to $897.85. 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 $898.01 to $899.00 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 $899.03 to $899.95. 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 $900.11 to $900.97. 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 $901.23 to $902.19. 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.
- F19
These Ordinary Shares were sold in multiple trades at prices ranging from $902.26 to $903.20. 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.
- F20
These Ordinary Shares were sold in multiple trades at prices ranging from $903.27 to $904.14. 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 $904.29 to $905.24. 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 $905.32 to $906.31. 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.
- F23
These Ordinary Shares were sold in multiple trades at prices ranging from $906.32 to $907.18. 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.
- F24
These Ordinary Shares were sold in multiple trades at prices ranging from $907.35 to $908.31. 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.
- F25
These Ordinary Shares were sold in multiple trades at prices ranging from $908.50 to $909.47. 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 $909.68 to $910.41. 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 $910.68 to $911.40. 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.
- F28
These Ordinary Shares were sold in multiple trades at prices ranging from $911.89 to $912.73. 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 $914.14 to $914.78. 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.
- F30
These Ordinary Shares were sold in multiple trades at prices ranging from $915.18 to $915.95. 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.