United States Computers, Phones & Household Electronics

Seagate Technology PLC (STX)

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Over the past 90 days, Seagate Technology insiders have engaged in significant selling activity, totaling approximately $128 million in net value. CEO William D. Mosley has been a primary seller, executing numerous transactions. This activity follows a period of strong stock performance and a positive earnings report in April, with no recorded insider purchases.
Ticker: STX Exchange: NSM
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Buy signal Sell signal Earnings
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Insider trades have triggered activity signals for Seagate Technology PLC. Upgrade to see score, net flow, insiders and the full signal context.

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Top insiders
Trades
MOSLEY WILLIAM D
CEO
44 sales — total 4,400,000 USD
Sale 1 Jul 2026
Value US$4,397,354.81 | Price 444.91 | Shares 77,956
Sale 1 Jul 2026
Value US$1,345,888.28 | Price 117.42 | Shares 86,402
Sale 1 Jul 2026
Value US$100,000.00 | Price 916.61 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 915.65 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 914.77 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 913.65 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 912.72 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 911.63 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 910.49 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 909.52 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 908.42 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 907.56 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 906.47 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 905.12 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 904.36 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 903.08 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 902.14 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 900.82 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 900.05 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 898.79 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 897.78 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 896.78 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 895.66 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 894.39 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 892.93 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 892.08 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 891.13 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 890.02 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 887.97 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 936.36 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 934.45 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 932.94 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 931.62 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 930.10 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 929.11 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 928.10 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 927.00 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 926.17 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 925.03 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 923.83 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 922.68 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 921.80 | Shares 1,000
Sale 1 Jul 2026
Value US$100,000.00 | Price 920.57 | Shares 1,000
Planned sale 1 Jul 2026
Value US$100,000.00 | Price 919.64 | Shares 1,000
Planned sale 12 Jun 2026
Value US$3,900,036.22 | Price 65.71 | Shares 50,594
Sale 12 Jun 2026
Value US$3,511,891.94 | Price 279.81 | Shares 84,880
Proposed sale 12 Jun 2026
Value US$404,529.94 | Price 868.09 | Shares 466
Planned sale 12 Jun 2026
Value US$870,507.91 | Price 880.19 | Shares 989
Sale 12 Jun 2026
Value US$1,556,393.85 | Price 880.19 | Shares 1,768
Proposed sale 12 Jun 2026
Value US$1,535,651.21 | Price 868.09 | Shares 1,769
Sale 12 Jun 2026
Value US$795,029.18 | Price 880.19 | Shares 903
Proposed sale 12 Jun 2026
Value US$784,753.36 | Price 868.09 | Shares 904
Proposed sale 12 Jun 2026
Value US$870,507.91 | Price 880.19 | Shares 989
Sale 10 Jun 2026
Value US$1,083,268.77 | Price 821.75 | Shares 1,318
Sale 10 Jun 2026
Value US$1,083,268.77 | Price 821.75 | Shares 1,318
Sale 10 Jun 2026
Value US$1,262,605.05 | Price 821.74 | Shares 1,537
Sale 10 Jun 2026
Value US$1,262,605.05 | Price 821.74 | Shares 1,537
Sale 10 Jun 2026
Value US$1,083,268.77 | Price 821.75 | Shares 1,318
Sale 10 Jun 2026
Value US$1,083,268.77 | Price 821.75 | Shares 1,318
Sale 10 Jun 2026
Value US$1,262,605.05 | Price 821.74 | Shares 1,537
Sale 10 Jun 2026
Value US$1,262,605.05 | Price 821.74 | Shares 1,537
Planned sale 10 Jun 2026
Value US$544,893.18 | Price 821.86 | Shares 663
Planned sale 10 Jun 2026
Value US$544,893.18 | Price 821.86 | Shares 663
Planned sale 10 Jun 2026
Value US$544,893.18 | Price 821.86 | Shares 663
Planned sale 10 Jun 2026
Value US$544,893.18 | Price 821.86 | Shares 663
Sale 10 Jun 2026
Value US$262,723.71 | Price 821.65 | Shares 320
Sale 10 Jun 2026
Value US$262,723.71 | Price 821.65 | Shares 320
Sale 10 Jun 2026
Value US$208,702.71 | Price 821.66 | Shares 254
Sale 10 Jun 2026
Value US$208,702.71 | Price 821.66 | Shares 254
Sale 10 Jun 2026
Value US$262,723.71 | Price 821.65 | Shares 320
Sale 10 Jun 2026
Value US$208,702.71 | Price 821.66 | Shares 254
Sale 10 Jun 2026
Value US$679,604.29 | Price 821.77 | Shares 827
Sale 10 Jun 2026
Value US$430,176.07 | Price 821.73 | Shares 524
Sale 10 Jun 2026
Value US$679,604.29 | Price 821.77 | Shares 827
Sale 10 Jun 2026
Value US$430,176.07 | Price 821.73 | Shares 524
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
77,956 +9.0%
444.91
US$4,397,355 		77,956 +9.0% 444.91 US$4,397,355
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
86,402 +2.7%
117.42
US$1,345,888 		86,402 +2.7% 117.42 US$1,345,888
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
35,655 -1.7%
404.49
US$3,679,953 		35,655 -1.7% 404.49 US$3,679,953
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.7%
915.65
US$100,000 		1,000 -0.7% 915.65 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.7%
914.77
US$100,000 		1,000 -0.7% 914.77 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.5%
913.65
US$100,000 		1,000 -0.5% 913.65 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
912.72
US$100,000 		1,000 -0.2% 912.72 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.3%
911.63
US$100,000 		1,000 -0.3% 911.63 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
910.49
US$100,000 		1,000 -0.1% 910.49 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
909.52
US$100,000 		1,000 -0.1% 909.52 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
908.42
US$100,000 		1,000 -0.2% 908.42 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
907.56
US$100,000 		1,000 -0.1% 907.56 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
906.47
US$100,000 		1,000 -0.2% 906.47 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
905.12
US$100,000 		1,000 -0.1% 905.12 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
904.36
US$100,000 		1,000 -0.2% 904.36 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
903.08
US$100,000 		1,000 -0.2% 903.08 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
902.14
US$100,000 		1,000 -0.1% 902.14 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
900.82
US$100,000 		1,000 -0.1% 900.82 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
900.05
US$100,000 		1,000 -0.1% 900.05 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
898.79
US$100,000 		1,000 -0.1% 898.79 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
897.78
US$100,000 		1,000 -0.1% 897.78 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
896.78
US$100,000 		1,000 -0.1% 896.78 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
895.66
US$100,000 		1,000 -0.1% 895.66 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
894.39
US$100,000 		1,000 -0.1% 894.39 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.0%
892.93
US$100,000 		1,000 -0.0% 892.93 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
892.08
US$100,000 		1,000 -0.1% 892.08 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.0%
891.13
US$100,000 		1,000 -0.0% 891.13 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
890.02
US$100,000 		1,000 -0.1% 890.02 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
887.97
US$100,000 		1,000 -0.1% 887.97 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.0%
936.36
US$100,000 		1,000 -0.0% 936.36 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
934.45
US$100,000 		1,000 -0.1% 934.45 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
932.94
US$100,000 		1,000 -0.1% 932.94 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.0%
931.62
US$100,000 		1,000 -0.0% 931.62 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
930.10
US$100,000 		1,000 -0.1% 930.10 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.1%
929.11
US$100,000 		1,000 -0.1% 929.11 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
928.10
US$100,000 		1,000 -0.2% 928.10 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
927.00
US$100,000 		1,000 -0.2% 927.00 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.3%
926.17
US$100,000 		1,000 -0.3% 926.17 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
925.03
US$100,000 		1,000 -0.2% 925.03 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.4%
923.83
US$100,000 		1,000 -0.4% 923.83 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.2%
922.68
US$100,000 		1,000 -0.2% 922.68 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.3%
921.80
US$100,000 		1,000 -0.3% 921.80 US$100,000
2026-07-02 2026-07-01 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.3%
920.57
US$100,000 		1,000 -0.3% 920.57 US$100,000
2026-07-02 2026-07-01 PlS Planned sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,000 -0.5%
919.64
US$100,000 		1,000 -0.5% 919.64 US$100,000
2026-06-15 2026-06-12 PlS Planned sale
1.5
Morris John Christopher

EVP & CTO

Officer
898 -6.9%
880.19
US$790,411 		898 -6.9% 880.19 US$790,411
2026-06-15 2026-06-12 S Sale
1.5
Morris John Christopher

EVP & CTO

Officer
466 -3.5%
880.19
US$410,169 		466 -3.5% 880.19 US$410,169
2026-06-15 2026-06-12 PlS Planned sale
1.9
Teh Ban Seng

EVP & Chief Commercial Officer

Officer
989 -18.7%
880.19
US$870,508 		989 -18.7% 880.19 US$870,508
2026-06-15 2026-06-12 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,768 -0.5%
880.19
US$1,556,394 		1,768 -0.5% 880.19 US$1,556,394
2026-06-15 2026-06-12 S Sale
2.2
Romano Gianluca

EVP & CFO

Officer
903 -2.1%
880.19
US$795,029 		903 -2.1% 880.19 US$795,029
2026-06-12 2026-06-12 PrS Proposed sale
1.5
Morris John Christopher

Officer

Officer
466
868.09
US$404,530 		466 868.09 US$404,530
2026-06-12 2026-06-12 PrS Proposed sale
2.2
MOSLEY WILLIAM D

Officer; Director

Executive Director
1,769
868.09
US$1,535,651 		1,769 868.09 US$1,535,651
2026-06-12 2026-06-12 PrS Proposed sale
2.2
Romano Gianluca

Officer

Officer
904
868.09
US$784,753 		904 868.09 US$784,753
2026-06-12 2026-06-12 PrS Proposed sale
1.9
BAN SENG TEH

Officer

Officer
989
880.19
US$870,508 		989 880.19 US$870,508
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,318 -0.4%
821.75
US$1,083,269 		1,318 -0.4% 821.75 US$1,083,269
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,318 -0.4%
821.75
US$1,083,269 		1,318 -0.4% 821.75 US$1,083,269
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,537 -0.5%
821.74
US$1,262,605 		1,537 -0.5% 821.74 US$1,262,605
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,537 -0.5%
821.74
US$1,262,605 		1,537 -0.5% 821.74 US$1,262,605
2026-06-11 2026-06-10 PlS Planned sale
1.9
Teh Ban Seng

EVP & Chief Commercial Officer

Officer
663 -13.4%
821.86
US$544,893 		663 -13.4% 821.86 US$544,893
2026-06-11 2026-06-10 PlS Planned sale
1.9
Teh Ban Seng

EVP & Chief Commercial Officer

Officer
663 -13.4%
821.86
US$544,893 		663 -13.4% 821.86 US$544,893
2026-06-11 2026-06-10 S Sale
1.5
Morris John Christopher

EVP & CTO

Officer
320 -2.5%
821.65
US$262,724 		320 -2.5% 821.65 US$262,724
2026-06-11 2026-06-10 S Sale
1.5
Morris John Christopher

EVP & CTO

Officer
320 -2.5%
821.65
US$262,724 		320 -2.5% 821.65 US$262,724
2026-06-11 2026-06-10 S Sale
1.5
Morris John Christopher

EVP & CTO

Officer
254 -2.0%
821.66
US$208,703 		254 -2.0% 821.66 US$208,703
2026-06-11 2026-06-10 S Sale
1.5
Morris John Christopher

EVP & CTO

Officer
254 -2.0%
821.66
US$208,703 		254 -2.0% 821.66 US$208,703
2026-06-11 2026-06-10 S Sale
2.2
Romano Gianluca

EVP & CFO

Officer
827 -1.9%
821.77
US$679,604 		827 -1.9% 821.77 US$679,604
2026-06-11 2026-06-10 S Sale
2.2
Romano Gianluca

EVP & CFO

Officer
524 -1.2%
821.73
US$430,176 		524 -1.2% 821.73 US$430,176
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,318 -0.4%
821.75
US$1,083,269 		1,318 -0.4% 821.75 US$1,083,269
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,318 -0.4%
821.75
US$1,083,269 		1,318 -0.4% 821.75 US$1,083,269
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,537 -0.5%
821.74
US$1,262,605 		1,537 -0.5% 821.74 US$1,262,605
2026-06-11 2026-06-10 S Sale
2.2
MOSLEY WILLIAM D

CEO

Executive Director
1,537 -0.5%
821.74
US$1,262,605 		1,537 -0.5% 821.74 US$1,262,605
2026-06-11 2026-06-10 PlS Planned sale
1.9
Teh Ban Seng

EVP & Chief Commercial Officer

Officer
663 -13.4%
821.86
US$544,893 		663 -13.4% 821.86 US$544,893
2026-06-11 2026-06-10 PlS Planned sale
1.9
Teh Ban Seng

EVP & Chief Commercial Officer

Officer
663 -13.4%
821.86
US$544,893 		663 -13.4% 821.86 US$544,893
2026-06-11 2026-06-10 S Sale
1.5
Morris John Christopher

EVP & CTO

Officer
320 -2.5%
821.65
US$262,724 		320 -2.5% 821.65 US$262,724
2026-06-11 2026-06-10 S Sale
1.5
Morris John Christopher

EVP & CTO

Officer
254 -2.0%
821.66
US$208,703 		254 -2.0% 821.66 US$208,703
2026-06-11 2026-06-10 S Sale
2.2
Romano Gianluca

EVP & CFO

Officer
827 -1.9%
821.77
US$679,604 		827 -1.9% 821.77 US$679,604
2026-06-11 2026-06-10 S Sale
2.2
Romano Gianluca

EVP & CFO

Officer
524 -1.2%
821.73
US$430,176 		524 -1.2% 821.73 US$430,176
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