Seagate Technology Holdings plc (STX) Insider Trading

Over the last 3 months, STX insiders made 0 open-market buys and 153 sales, a net sale of -$112.0M (SEC Form 4). Over the last 6 months, 1079 institutions increased and 1073 reduced their position (13F).

Insider Activity

Sentiment
0/100
Buys (3m)
0
Sells (3m)
153
Net (3m)
-$112.0M
Insider trades by month Buys Sells
May
Jun
Jul
Aug
Context3-month price +13%Institutions accumulating (13F)
DateInsiderTypeSharesPrice
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell575$821.46
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell640$806.47
Aug 4, 2026Morris John Christopherofficer: EVP & CTOSell168$817.76
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,600$824.57
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell80$837.98
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,985$826.76
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell120$789.55
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell440$790.98
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell40$786.12
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell394$814.99
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell480$793.70
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell520$820.35
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell181$835.06
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell320$832.02
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,641$828.60
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell400$819.41
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell840$822.56
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOOption14,000$46.23
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell366$814.07
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,120$823.46
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,960$830.83
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell697$808.72
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,799$827.67
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,280$825.64
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell368$794.39
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell680$797.04
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell360$802.08
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell280$807.65
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell160$836.77
Aug 4, 2026MOSLEY WILLIAM Ddirector, officer: CEOSell1,619$829.78

Source: STX SEC Form 4 filings, latest Aug 4, 2026. For informational purposes only — not investment advice.

Institutional activity (13F)

How institutions changed their STX positions over the last 6 months (SEC Form 13F).

Increased
1079
New positions
806
Reduced
1073
Sold out
160
Largest moves
InstitutionActionSharesFiled
SANDERS CAPITAL, LLCReduced17.2MFeb 13, 2026
BLACKROCK, INC.Increased16.1MFeb 12, 2026
BlackRock, Inc.Increased15.2MAug 7, 2026
BLACKROCK, INC.Reduced14.3MMay 13, 2026
VANGUARD CAPITAL MANAGEMENT LLCNew Position14.2MMay 15, 2026
SANDERS CAPITAL, LLCReduced12.9MMay 14, 2026
VANGUARD PORTFOLIO MANAGEMENT LLCNew Position11.1MMay 8, 2026
STATE STREET CORPIncreased9.9MAug 7, 2026
STATE STREET CORPIncreased9.4MFeb 13, 2026
STATE STREET CORPReduced9.3MMay 15, 2026
FMR LLCIncreased8.2MMay 15, 2026
JPMORGAN CHASE & COReduced7.0MFeb 11, 2026
JPMORGAN CHASE & COReduced6.7MMay 13, 2026
CAPITAL RESEARCH GLOBAL INVESTORSIncreased5.7MMay 13, 2026
DZ BANK AG DEUTSCHE ZENTRAL GENOSSENSCHAFTS BANK, FRANKFURT AM MAINIncreased5.4MFeb 17, 2026

Source: SEC Form 13F filings. For informational purposes only — not investment advice.

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