SEC Form 4 · accession 0001137789-26-000170
Seagate Technology Holdings plc · STX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Gianluca Romano
Officer — EVP & CFO
Period of report
Aug 7, 2026
Accepted (ET)
Aug 11, 2026 · 4:21 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001137789
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Ordinary SharesF1,F2 | Aug 7, 2026 | S | 320 | $799.6438 | D | 35,314 | D | |
| Ordinary SharesF3 | Aug 7, 2026 | S | 520 | $800.4192 | D | 34,794 | D | |
| Ordinary SharesF4 | Aug 7, 2026 | S | 767 | $801.7057 | D | 34,027 | D | |
| Ordinary SharesF5 | Aug 7, 2026 | S | 679 | $802.6675 | D | 33,348 | D | |
| Ordinary SharesF6 | Aug 7, 2026 | S | 1,227 | $803.8164 | D | 32,121 | D | |
| Ordinary SharesF7 | Aug 7, 2026 | S | 620 | $804.7771 | D | 31,501 | D | |
| Ordinary SharesF8 | Aug 7, 2026 | S | 1,146 | $805.8859 | D | 30,355 | D | |
| Ordinary SharesF9 | Aug 7, 2026 | S | 840 | $806.805 | D | 29,515 | D | |
| Ordinary SharesF10 | Aug 7, 2026 | S | 440 | $807.85 | D | 29,075 | D | |
| Ordinary SharesF11 | Aug 7, 2026 | S | 400 | $808.909 | D | 28,675 | D | |
| Ordinary SharesF12 | Aug 7, 2026 | S | 320 | $810.0969 | D | 28,355 | D | |
| Ordinary SharesF13 | Aug 7, 2026 | S | 720 | $811.5131 | D | 27,635 | D | |
| Ordinary SharesF14 | Aug 7, 2026 | S | 440 | $812.4709 | D | 27,195 | D | |
| Ordinary SharesF15 | Aug 7, 2026 | S | 412 | $813.5028 | D | 26,783 | D | |
| Ordinary SharesF16 | Aug 7, 2026 | S | 920 | $814.417 | D | 25,863 | D | |
| Ordinary SharesF17 | Aug 7, 2026 | S | 320 | $815.4988 | D | 25,543 | D | |
| Ordinary SharesF18 | Aug 7, 2026 | S | 480 | $816.7183 | D | 25,063 | D | |
| Ordinary SharesF19 | Aug 7, 2026 | S | 280 | $817.7414 | D | 24,783 | D | |
| Ordinary SharesF20 | Aug 7, 2026 | S | 560 | $818.7086 | D | 24,223 | D | |
| Ordinary SharesF21 | Aug 7, 2026 | S | 400 | $820.214 | D | 23,823 | D | |
| Ordinary SharesF22 | Aug 7, 2026 | S | 640 | $821.3194 | D | 23,183 | D | |
| Ordinary SharesF23 | Aug 7, 2026 | S | 520 | $822.4477 | D | 22,663 | D | |
| Ordinary SharesF24 | Aug 7, 2026 | S | 360 | $823.5711 | D | 22,303 | D | |
| Ordinary SharesF25 | Aug 7, 2026 | S | 120 | $824.90 | D | 22,183 | D | |
| Ordinary SharesF26 | Aug 7, 2026 | S | 80 | $825.545 | D | 22,103 | D | |
| Ordinary Shares | Aug 7, 2026 | S | 40 | $827.88 | D | 22,063 | D | |
| Ordinary SharesF27 | Aug 7, 2026 | S | 240 | $829.74 | D | 21,823 | D | |
| Ordinary SharesF28 | Aug 7, 2026 | S | 280 | $831.2486 | D | 21,543 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1All sales transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on April 30, 2026
- F10These Ordinary Shares were sold in multiple trades at prices ranging from $807.39 to $808.31. 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.
- F11These Ordinary Shares were sold in multiple trades at prices ranging from $808.49 to $809.30. 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.
- F12These Ordinary Shares were sold in multiple trades at prices ranging from $809.58 to $810.57. 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.
- F13These Ordinary Shares were sold in multiple trades at prices ranging from $810.98 to $811.86. 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.
- F14These Ordinary Shares were sold in multiple trades at prices ranging from $811.99 to $812.93. 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.
- F15These Ordinary Shares were sold in multiple trades at prices ranging from $813.03 to $813.91. 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.
- F16These Ordinary Shares were sold in multiple trades at prices ranging from $814.10 to $814.96. 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.
- F17These Ordinary Shares were sold in multiple trades at prices ranging from $815.20 to $815.76. 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.
- F18These Ordinary Shares were sold in multiple trades at prices ranging from $816.26 to $817.17. 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.
- F19These Ordinary Shares were sold in multiple trades at prices ranging from $817.29 to $818.27. 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.
- F2These Ordinary Shares were sold in multiple trades at prices ranging from $799.13 to $799.92. 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.
- F20These Ordinary Shares were sold in multiple trades at prices ranging from $818.41 to $819.18. 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.
- F21These Ordinary Shares were sold in multiple trades at prices ranging from $819.76 to $820.58. 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.
- F22These Ordinary Shares were sold in multiple trades at prices ranging from $821.01 to $821.86. 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.
- F23These Ordinary Shares were sold in multiple trades at prices ranging from $822.01 to $822.95. 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.
- F24These Ordinary Shares were sold in multiple trades at prices ranging from $823.13 to $824.10. 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.
- F25These Ordinary Shares were sold in multiple trades at prices ranging from $824.46 to $825.21. 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.
- F26These Ordinary Shares were sold in multiple trades at prices ranging from $825.52 to $825.57. 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.
- F27These Ordinary Shares were sold in multiple trades at prices ranging from $829.14 to $830.04. 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.
- F28These Ordinary Shares were sold in multiple trades at prices ranging from $831.05 to $832.04. 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.
- F3These Ordinary Shares were sold in multiple trades at prices ranging from $800.18 to $801.14. 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.
- F4These Ordinary Shares were sold in multiple trades at prices ranging from $801.19 to $802.18. 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.
- F5These Ordinary Shares were sold in multiple trades at prices ranging from $802.21 to $803.17. 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.
- F6These Ordinary Shares were sold in multiple trades at prices ranging from $803.26 to $804.23. 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.
- F7These Ordinary Shares were sold in multiple trades at prices ranging from $804.30 to $805.28. 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.
- F8These Ordinary Shares were sold in multiple trades at prices ranging from $805.35 to $806.33. 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.
- F9These Ordinary Shares were sold in multiple trades at prices ranging from $806.37 to $807.36. 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.