Transaction · 0001137789-26-000197

MOSLEY WILLIAM D

MOSLEY WILLIAM D, CEO, reported an open-market or private sale at Seagate Technology Holdings plc involving 160.000000 shares for an estimated $129150.80. Reported holdings after the transaction were 324490.500000 shares. The stored filing text includes a detected 10b5-1 reference.

Open-market sellSEC transaction code SCEO
STXSeagate Technology Holdings plc
Filing timeSep 03
Trade dateSep 01, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$798.61
Pre-filing
1mo ago +7.2%1w ago +3.1%1d ago +3.7%
Returns since
7d +0.0%30d +0.0%90d +0.0%180d +0.0%1y +0.0%

STX price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
STX since 2026-09-03Filed yesterday · 1 day of post-filing data
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001137789-26-000197
Ordinary Shares
Transaction date
Sep 01, 2026
Filed Sep 03, 2026, 08:51 PM · 2d delay
Shares
160 sh
$80.7k per share
Estimated value
-$12.9M
Computed from shares × price
Holdings after
324k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Direct Ownership Repeat Seller 10b5-1 Detected
0score
Filing-only score

0

Compact filing score computed from stored Form 4 facts. Version v1.

Neutral filing signal

This filing is broadly neutral on the filing-only scale. The Form 4 facts do not strongly tilt positive or negative.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

CEO

Officer YesDirector Yes10% NoOther No
Footnotes & amended
  1. 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 18, 2026.

  2. F2

    These Ordinary Shares were sold in multiple trades at prices ranging from $804.17 to $804.83. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  3. F3

    These Ordinary Shares were sold in multiple trades at prices ranging from $805.21 to $805.76. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  4. F4

    These Ordinary Shares were sold in multiple trades at prices ranging from $806.93 to $807.42. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  5. F5

    These Ordinary Shares were sold in multiple trades at prices ranging from $808.02 to $809.00. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  6. F6

    These Ordinary Shares were sold in multiple trades at prices ranging from $809.05 to $810.01. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  7. F7

    These Ordinary Shares were sold in multiple trades at prices ranging from $810.17 to $811.14. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  8. F8

    These Ordinary Shares were sold in multiple trades at prices ranging from $811.18 to $812.10. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  9. F9

    These Ordinary Shares were sold in multiple trades at prices ranging from $812.19 to $813.04. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  10. F10

    These Ordinary Shares were sold in multiple trades at prices ranging from $813.20 to $814.19. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  11. F11

    These Ordinary Shares were sold in multiple trades at prices ranging from $814.23 to $815.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  12. F12

    These Ordinary Shares were sold in multiple trades at prices ranging from $815.28 to $816.27. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  13. F13

    These Ordinary Shares were sold in multiple trades at prices ranging from $816.28 to $817.27. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  14. F14

    These Ordinary Shares were sold in multiple trades at prices ranging from $817.29 to $818.20. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  15. F15

    These Ordinary Shares were sold in multiple trades at prices ranging from $818.29 to $819.18. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  16. F16

    These Ordinary Shares were sold in multiple trades at prices ranging from $819.32 to $820.29. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  17. F17

    These Ordinary Shares were sold in multiple trades at prices ranging from $820.36 to $821.26. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  18. F18

    These Ordinary Shares were sold in multiple trades at prices ranging from $821.44 to $822.37. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  19. F19

    These Ordinary Shares were sold in multiple trades at prices ranging from $822.47 to $823.42. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  20. F20

    These Ordinary Shares were sold in multiple trades at prices ranging from $823.47 to $824.40. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  21. F21

    These Ordinary Shares were sold in multiple trades at prices ranging from $824.47 to $825.44. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  22. F22

    These Ordinary Shares were sold in multiple trades at prices ranging from $825.51 to $826.27. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  23. F23

    These Ordinary Shares were sold in multiple trades at prices ranging from $826.52 to $827.29. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  24. F24

    These Ordinary Shares were sold in multiple trades at prices ranging from $827.76 to $828.17. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  25. F25

    These Ordinary Shares were sold in multiple trades at prices ranging from $829.09 to $829.10. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  26. F26

    These Ordinary Shares were sold in multiple trades at prices ranging from $830.22 to $830.50. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  27. F27

    These Ordinary Shares were sold in multiple trades at prices ranging from $832.02 to $832.07. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes…

  28. F28

    Options granted to the Reporting Person are subject to a four year vesting schedule. One quarter of the option shares vested on September 9, 2021. The remaining option shares vest in equal monthly ins…

Original filing · 0001137789-26-000197
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