William D. Mosley
Chief Executive Officer at Seagate Technology Holdings PLC
Sits on 2 boards. Last updated September 27, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 5 years
- Director since
- 2023
5 years of board service in total across 2 boards, counting each seat separately. Longest: Seagate Technology Holdings PLC, 3 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Cirrus Logic Inc. July 31, 202697.0%
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Cirrus Logic Inc. July 29, 202597.3%
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Cirrus Logic Inc. July 26, 202499.6%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 15, 2026 | Seagate Technology Holdings PLC | Open-market sale | −97,889 | $772.14 | $75,584,519 |
| Sep 14, 2026 | Seagate Technology Holdings PLC | Option exercise | +177,000 | — | — |
| Sep 14, 2026 | Seagate Technology Holdings PLC | Open-market sale | −1,870 | $781.23 | $1,460,696 |
| Sep 11, 2026 | Seagate Technology Holdings PLC | Option exercise | +3,319 | — | — |
| Sep 10, 2026 | Seagate Technology Holdings PLC | Open-market sale | −1,534 | $862.13 | $1,322,082 |
| Sep 10, 2026 | Seagate Technology Holdings PLC | Open-market sale | −1,316 | $862.14 | $1,134,354 |
| Sep 9, 2026 | Seagate Technology Holdings PLC | Option exercise | +2,815 | — | — |
| Sep 9, 2026 | Seagate Technology Holdings PLC | Option exercise | +2,415 | — | — |
| Sep 1, 2026 | Seagate Technology Holdings PLC | Option exercise | +14,000 | $46.23 | $647,220 |
| Sep 1, 2026 | Seagate Technology Holdings PLC | Open-market sale | −357 | $804.61 | $287,245 |
| Sep 1, 2026 | Seagate Technology Holdings PLC | Open-market sale | −160 | $805.55 | $128,888 |
| Sep 1, 2026 | Seagate Technology Holdings PLC | Open-market sale | −160 | $807.19 | $129,151 |
| Sep 1, 2026 | Seagate Technology Holdings PLC | Open-market sale | −960 | $808.62 | $776,275 |
| Sep 1, 2026 | Seagate Technology Holdings PLC | Open-market sale | −1,160 | $809.55 | $939,080 |
| Sep 1, 2026 | Seagate Technology Holdings PLC | Open-market sale | −1,105 | $810.78 | $895,916 |
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