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William D Mosley

Chief Executive Officer · Seagate Technology Holdings

William D Mosley (Chief Executive Officer) filed 23 Form 4 reports in the trailing twelve months (0 purchases, 23 sales), most often in Seagate Technology Holdings plc (STX). The largest single filing was $75.6M of STX (97,889 sh × $772.14, as filed), executed Sep 15. Data as of Nov 8 2026.

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Return, ttmiAverage return per filing, trailing twelve months
–
no purchases on file
Delay-adjustediThe same average, entered at disclosure dates
–
returns measure stock purchases only
Filings, ttm
23
0 buys · 23 sells
Median delay
–
measured on stock purchases
Volume, ttmiDollar value disclosed in the trailing twelve months
$290.6M
shares × price, as filed
Last traded
Nov 2
Filed Nov 3

Median ADV $3.5B across their filed names

Open performance→
Volume by month
$79.5M$39.8M$0Dec 2024Jun 2025Dec 2025Jun 2026Dec 2024 · sells $2.1MJan 2025 · sells $1.7MFeb 2025 · sells $1.9MMar 2025 · sells $2.0MApr 2025 · sells $1.7MMay 2025 · sells $7.6MJun 2025 · sells $23.1MJul 2025 · sells $2.9MAug 2025 · sells $3.0MSep 2025 · sells $3.3MOct 2025 · sells $4.7MNov 2025 · sells $5.2MDec 2025 · sells $5.4MJan 2026 · sells $5.7MFeb 2026 · sells $8.3MMar 2026 · sells $17.5MApr 2026 · sells $8.1MMay 2026 · sells $22.2MJun 2026 · sells $31.2MJul 2026 · sells $27.4MAug 2026 · sells $39.7MSep 2026 · sells $79.5MOct 2026 · sells $27.6MNov 2026 · sells $18.0M
Buys $0 Sells $349.7M

Shares × price, as filed · by filing month · past 24 months

Sectors filed on
Technology 23 filings

Sector per market data · by filing · past 12 months

Most traded names
STX Seagate Technology Holdings plc STX · 0 buys · 37 sells 37 filings
Recent filings
STXSALE Seagate Technology Holdings plc View filing → $4.0M
6,440 sh across 11 lots
Exec Nov 2
Filed Nov 3 · 4:59 PM ET
STXSALE Seagate Technology Holdings plc View filing → $14.0M
23,280 sh across 27 lots
Exec Nov 2
Filed Nov 3 · 4:59 PM ET
STXSALE Seagate Technology Holdings plc View filing → $10.2M
10,882 sh across 14 lots
Exec Oct 1
Filed Oct 2 · 4:07 PM ET
STXSALE Seagate Technology Holdings plc View filing → $17.4M
18,998 sh across 28 lots
Exec Oct 1
Filed Oct 2 · 4:07 PM ET
STXSALE Seagate Technology Holdings plc View filing → $75.6M
97,889 sh × $772.14
Exec Sep 15
Filed Sep 16 · 4:10 PM ET
STXSALE Seagate Technology Holdings plc View filing → $1.5M
1,870 sh × $781.23
Exec Sep 14
Filed Sep 15 · 4:15 PM ET
STXSALE Seagate Technology Holdings plc View filing → $2.5M
2,849 sh across 2 lots
Exec Sep 10
Filed Sep 11 · 4:46 PM ET
STXSALE Seagate Technology Holdings plc View filing → $15.4M
18,138 sh across 3 lots
Exec Aug 21
Filed Aug 24 · 5:10 PM ET
More filings →