=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-08-07
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: Seagate Technology Holdings plc (STX)
CIK: 0001137789
--- Reporting Owner ---
Name: Romano Gianluca
CIK: 0001764650
Role: Officer (EVP & CFO)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -320 | Price: $799.64
Total Value: $255,886.02
Shares Owned After: 35,314.25 | Ownership: D (Direct)
Footnotes:
[F1] All 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
[F2] These 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.
[Transaction #2]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -520 | Price: $800.42
Total Value: $416,217.98
Shares Owned After: 34,794.25 | Ownership: D (Direct)
Footnotes:
[F3] These 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.
[Transaction #3]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -767 | Price: $801.71
Total Value: $614,908.27
Shares Owned After: 34,027.25 | Ownership: D (Direct)
Footnotes:
[F4] These 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.
[Transaction #4]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -679 | Price: $802.67
Total Value: $545,011.23
Shares Owned After: 33,348.25 | Ownership: D (Direct)
Footnotes:
[F5] These 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.
[Transaction #5]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -1,227 | Price: $803.82
Total Value: $986,282.72
Shares Owned After: 32,121.25 | Ownership: D (Direct)
Footnotes:
[F6] These 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.
[Transaction #6]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -620 | Price: $804.78
Total Value: $498,961.80
Shares Owned After: 31,501.25 | Ownership: D (Direct)
Footnotes:
[F7] These 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.
[Transaction #7]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -1,146 | Price: $805.89
Total Value: $923,545.24
Shares Owned After: 30,355.25 | Ownership: D (Direct)
Footnotes:
[F8] These 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.
[Transaction #8]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -840 | Price: $806.80
Total Value: $677,716.20
Shares Owned After: 29,515.25 | Ownership: D (Direct)
Footnotes:
[F9] These 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.
[Transaction #9]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -440 | Price: $807.85
Total Value: $355,454.00
Shares Owned After: 29,075.25 | Ownership: D (Direct)
Footnotes:
[F10] These 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.
[Transaction #10]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -400 | Price: $808.91
Total Value: $323,563.60
Shares Owned After: 28,675.25 | Ownership: D (Direct)
Footnotes:
[F11] These 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.
[Transaction #11]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -320 | Price: $810.10
Total Value: $259,231.01
Shares Owned After: 28,355.25 | Ownership: D (Direct)
Footnotes:
[F12] These 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.
[Transaction #12]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -720 | Price: $811.51
Total Value: $584,289.43
Shares Owned After: 27,635.25 | Ownership: D (Direct)
Footnotes:
[F13] These 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.
[Transaction #13]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -440 | Price: $812.47
Total Value: $357,487.20
Shares Owned After: 27,195.25 | Ownership: D (Direct)
Footnotes:
[F14] These 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.
[Transaction #14]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -412 | Price: $813.50
Total Value: $335,163.15
Shares Owned After: 26,783.25 | Ownership: D (Direct)
Footnotes:
[F15] These 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.
[Transaction #15]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -920 | Price: $814.42
Total Value: $749,263.64
Shares Owned After: 25,863.25 | Ownership: D (Direct)
Footnotes:
[F16] These 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.
[Transaction #16]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -320 | Price: $815.50
Total Value: $260,959.62
Shares Owned After: 25,543.25 | Ownership: D (Direct)
Footnotes:
[F17] These 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.
[Transaction #17]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -480 | Price: $816.72
Total Value: $392,024.78
Shares Owned After: 25,063.25 | Ownership: D (Direct)
Footnotes:
[F18] These 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.
[Transaction #18]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -280 | Price: $817.74
Total Value: $228,967.59
Shares Owned After: 24,783.25 | Ownership: D (Direct)
Footnotes:
[F19] These 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.
[Transaction #19]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -560 | Price: $818.71
Total Value: $458,476.82
Shares Owned After: 24,223.25 | Ownership: D (Direct)
Footnotes:
[F20] These 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.
[Transaction #20]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -400 | Price: $820.21
Total Value: $328,085.60
Shares Owned After: 23,823.25 | Ownership: D (Direct)
Footnotes:
[F21] These 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.
[Transaction #21]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -640 | Price: $821.32
Total Value: $525,644.42
Shares Owned After: 23,183.25 | Ownership: D (Direct)
Footnotes:
[F22] These 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.
[Transaction #22]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -520 | Price: $822.45
Total Value: $427,672.80
Shares Owned After: 22,663.25 | Ownership: D (Direct)
Footnotes:
[F23] These 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.
[Transaction #23]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -360 | Price: $823.57
Total Value: $296,485.60
Shares Owned After: 22,303.25 | Ownership: D (Direct)
Footnotes:
[F24] These 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.
[Transaction #24]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -120 | Price: $824.90
Total Value: $98,988.00
Shares Owned After: 22,183.25 | Ownership: D (Direct)
Footnotes:
[F25] These 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.
[Transaction #25]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -80 | Price: $825.54
Total Value: $66,043.60
Shares Owned After: 22,103.25 | Ownership: D (Direct)
Footnotes:
[F26] These 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.
[Transaction #26]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -40 | Price: $827.88
Total Value: $33,115.20
Shares Owned After: 22,063.25 | Ownership: D (Direct)
[Transaction #27]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -240 | Price: $829.74
Total Value: $199,137.60
Shares Owned After: 21,823.25 | Ownership: D (Direct)
Footnotes:
[F27] These 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.
[Transaction #28]
Security: Ordinary Shares
Date: 2026-08-07 | Code: S (Open market sale)
Shares: -280 | Price: $831.25
Total Value: $232,749.61
Shares Owned After: 21,543.25 | Ownership: D (Direct)
Footnotes:
[F28] These 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.
--- Footnotes (Complete Index) ---
F1: All 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
F10: These 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.
F11: These 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.
F12: These 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.
F13: These 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.
F14: These 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.
F15: These 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.
F16: These 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.
F17: These 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.
F18: These 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.
F19: These 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.
F2: These 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.
F20: These 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.
F21: These 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.
F22: These 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.
F23: These 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.
F24: These 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.
F25: These 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.
F26: These 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.
F27: These 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.
F28: These 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.
F3: These 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.
F4: These 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.
F5: These 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.
F6: These 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.
F7: These 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.
F8: These 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.
F9: These 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.
--- Signature ---
/s/ /s/ Louis J. Thorson, Attorney-in-Fact for Gianluca Romano (2026-08-11)
