Person

William D. Mosley

CEO · Director, Seagate Technology

Current S&P 500 boards
1
Current roles
1
Open-market buys
$0
Open-market sales
$397.1M

Current roles

From Section 16 filings (Forms 3, 4 and 5) in the last 13 months.

Past roles

“Last filing” is the latest Form 3/4/5 for that company, an upper bound on the end date.

None on record since 2016.

Sits alongside

People who currently share a board or management team with this person.

Open-market trades

Purchases and sales reported on Form 4 at S&P 500 companies.

DateCompanyTypeSharesPriceValue
Sep 15, 2026STXSale97,889$772.14$75.6M
Sep 14, 2026STXSale1,870$781.23$1.5M
Sep 10, 2026STXSale1,534$862.13$1.3M
Sep 10, 2026STXSale1,316$862.14$1.1M
Sep 1, 2026STXSale80$830.36$66K
Sep 1, 2026STXSale80$829.10$66K
Sep 1, 2026STXSale120$827.90$99K
Sep 1, 2026STXSale340$826.86$281K
Sep 1, 2026STXSale580$826.00$479K
Sep 1, 2026STXSale600$824.93$495K
Sep 1, 2026STXSale1,240$824.05$1.0M
Sep 1, 2026STXSale600$822.89$494K
Sep 1, 2026STXSale480$822.05$395K
Sep 1, 2026STXSale920$820.89$755K
Sep 1, 2026STXSale1,320$819.84$1.1M
Sep 1, 2026STXSale1,040$818.78$852K
Sep 1, 2026STXSale2,080$817.71$1.7M
Sep 1, 2026STXSale4,287$816.75$3.5M
Sep 1, 2026STXSale4,555$815.75$3.7M
Sep 1, 2026STXSale2,878$814.75$2.3M
Sep 1, 2026STXSale80$832.05$67K
Sep 1, 2026STXSale357$804.61$287K
Sep 1, 2026STXSale160$805.55$129K
Sep 1, 2026STXSale160$807.19$129K
Sep 1, 2026STXSale960$808.62$776K
Sep 1, 2026STXSale1,160$809.55$939K
Sep 1, 2026STXSale1,105$810.78$896K
Sep 1, 2026STXSale1,578$811.73$1.3M
Sep 1, 2026STXSale1,200$812.55$975K
Sep 1, 2026STXSale2,040$813.74$1.7M
Aug 21, 2026STXSale3,438$849.35$2.9M
Aug 21, 2026STXSale11,308$849.35$9.6M
Aug 21, 2026STXSale3,393$849.35$2.9M
Aug 3, 2026STXSale80$837.98$67K
Aug 3, 2026STXSale181$835.06$151K
Aug 3, 2026STXSale400$835.99$334K
Aug 3, 2026STXSale160$836.77$134K
Aug 3, 2026STXSale200$833.91$167K
Aug 3, 2026STXSale400$832.73$333K
Aug 3, 2026STXSale320$832.02$266K
Aug 3, 2026STXSale1,960$830.83$1.6M
Aug 3, 2026STXSale1,619$829.78$1.3M
Aug 3, 2026STXSale1,641$828.60$1.4M
Aug 3, 2026STXSale1,799$827.67$1.5M
Aug 3, 2026STXSale1,985$826.76$1.6M
Aug 3, 2026STXSale1,280$825.64$1.1M
Aug 3, 2026STXSale1,600$824.57$1.3M
Aug 3, 2026STXSale1,120$823.46$922K
Aug 3, 2026STXSale840$822.56$691K
Aug 3, 2026STXSale575$821.46$472K
Aug 3, 2026STXSale520$820.35$427K
Aug 3, 2026STXSale400$819.41$328K
Aug 3, 2026STXSale280$807.65$226K
Aug 3, 2026STXSale80$783.84$63K
Aug 3, 2026STXSale383$809.71$310K
Aug 3, 2026STXSale520$810.44$421K
Aug 3, 2026STXSale640$811.82$520K
Aug 3, 2026STXSale400$812.84$325K
Aug 3, 2026STXSale366$814.07$298K
Aug 3, 2026STXSale394$814.99$321K
Aug 3, 2026STXSale320$815.87$261K
Aug 3, 2026STXSale440$817.17$360K
Aug 3, 2026STXSale320$818.32$262K
Aug 3, 2026STXSale711$792.72$564K
Aug 3, 2026STXSale480$793.70$381K
Aug 3, 2026STXSale640$806.47$516K
Aug 3, 2026STXSale840$804.73$676K
Aug 3, 2026STXSale520$803.73$418K
Aug 3, 2026STXSale360$802.08$289K
Aug 3, 2026STXSale400$801.05$320K
Aug 3, 2026STXSale520$800.08$416K
Aug 3, 2026STXSale480$799.27$384K
Aug 3, 2026STXSale560$797.85$447K
Aug 3, 2026STXSale680$797.04$542K
Aug 3, 2026STXSale761$795.81$606K
Aug 3, 2026STXSale368$794.39$292K
Aug 3, 2026STXSale440$790.98$348K
Aug 3, 2026STXSale120$789.55$95K
Aug 3, 2026STXSale160$787.77$126K
Aug 3, 2026STXSale40$786.12$31K
Aug 3, 2026STXSale697$808.72$564K
Jul 1, 2026STXSale720$922.68$664K
Jul 1, 2026STXSale880$921.80$811K
Jul 1, 2026STXSale880$920.57$810K
Jul 1, 2026STXSale1,480$919.64$1.4M
Jul 1, 2026STXSale620$928.10$575K
Jul 1, 2026STXSale320$929.11$297K
Jul 1, 2026STXSale280$930.10$260K
Jul 1, 2026STXSale120$931.62$112K
Jul 1, 2026STXSale320$932.94$299K
Jul 1, 2026STXSale200$934.45$187K
Jul 1, 2026STXSale1,160$923.83$1.1M
Jul 1, 2026STXSale770$925.03$712K
Jul 1, 2026STXSale1,019$926.17$944K
Jul 1, 2026STXSale571$927.00$529K
Jul 1, 2026STXSale3$936.36$3K
Jul 1, 2026STXSale254$895.66$227K
Jul 1, 2026STXSale400$896.78$359K
Jul 1, 2026STXSale340$897.78$305K
Jul 1, 2026STXSale300$898.79$270K

SEC reporting-owner ID (CIK) 1388390 · all filings on EDGAR