StockCIK 1137789
Seagate Technology Holdings plc (STX): Insider Trades and Fund Holdings
In the past 12 months, Seagate Technology Holdings plc insiders reported 0 open-market purchases worth $0 and 29 sales worth $336.1M; 16 of the sales were reported as made under a 10b5-1 trading plan.
0Insider buys, 12 months
$0Bought by insiders, 12 months
$336.1MSold by insiders, 12 months
5Tracked funds holding
Recent insider trades
Open-market purchases (code P) and sales (code S) from Form 4. Grants, option exercises and gifts are not shown. Latest filing: Oct 26, 2026.
| Filed | Insider | Type | Value |
|---|---|---|---|
| Oct 26 | James Ci LeeGeneral Counsel | ▼ SELL | $351K |
| Oct 2 | William D. MosleyCEO | ▼ SELL10b5-1 | $17.4M |
| Oct 2 | William D. MosleyCEO | ▼ SELL10b5-1 | $10.3M |
| Sep 22 | John Christopher MorrisCTO | ▼ SELL10b5-1 | $8.21M |
| Sep 16 | William D. MosleyCEO | ▼ SELL | $75.6M |
| Sep 16 | Ban Seng TehEVP | ▼ SELL10b5-1 | $41.2M |
| Sep 16 | Gianluca RomanoCFO | ▼ SELL | $38.6M |
| Sep 16 | John Christopher MorrisCTO | ▼ SELL | $11.9M |
| Sep 15 | Gianluca RomanoCFO | ▼ SELL10b5-1 | $38.1M |
| Sep 15 | Gianluca RomanoCFO | ▼ SELL10b5-1 | $3.93M |
Source: SEC Form 4 filings, retrieved Oct 28, 2026. How we read filings
All 29 STX insider trades →Insiders who traded in the past year
| Insider | Role | Buys | Bought | Sells | Sold |
|---|---|---|---|---|---|
| James Ci Lee | General Counsel | 0 | $0 | 3 | $10.9M |
| William D. Mosley | CEO | 0 | $0 | 7 | $147.1M |
| John Christopher Morris | CTO | 0 | $0 | 6 | $24.5M |
| Ban Seng Teh | EVP | 0 | $0 | 6 | $62.9M |
| Gianluca Romano | CFO | 0 | $0 | 6 | $90.2M |
| Yolanda Lee Conyers | Director | 0 | $0 | 1 | $611K |
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Tracked funds that report STX
From each fund's latest 13F. Holdings are as of quarter end and are filed up to 45 days later.
| Fund | Shares | Value | Change |
|---|---|---|---|
| Lone Pine Capital | 1,000,109 | $965.1M | ▲ New |
| Renaissance Technologies | 457,353 | $441.3M | ▲ +47.3% |
| Tiger Global Management | 285,100 | $275.1M | ▲ New |
| Bridgewater Associates | 199,822 | $192.8M | ▼ −39.3% |
| Duquesne Family Office | 122,000 | $118K | ▲ +140.6% |
Source: SEC Form 13F-HR filings, retrieved Oct 28, 2026. How we read filings
Reading these numbers
Insiders sell for many reasons: taxes, diversification, a house. Purchases with their own money are rarer and are usually read as more informative. A Form 4 is due within two business days of the trade. How to read a Form 4 →