Seagate Technology Holdings ($STX) Insider Trading & Smart Money Activity
Seagate Technology Holdings plc ($STX) has 9 insider trades, 3 congress trades, 14 13F position changes and 5 analyst ratings on file. In the last 12 months on the open market, no insider bought and 5 insiders sold ($22.93M), net -$22.93M.
- Insider buyers (12 mo)
- 0
- Insider sellers (12 mo)
- 5
- Net insider $ (12 mo)
- -$22.93M
- Congress trades (12 mo)
- 3
- 13F moves on file
- 14
- Analyst ratings on file
- 5
STX insider buying and selling by quarter
| Quarter | Insider buys | Insider sales | Congress buys / sales | 13F added / cut |
|---|---|---|---|---|
| Q1 2026 | 0 | 0 | 1 / 0 | 0 / 0 |
| Q2 2026 | 0 | 4 · $4.42M | 0 / 0 | 5 / 9 |
| Q3 2026 | 0 | 1 · $8.21M | 0 / 2 | 0 / 0 |
| Q4 2026 | 0 | 1 · $10.29M | 0 / 0 | 0 / 0 |
Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.
All STX insider, congress, 13F and analyst activity
| Date | Source | Who | Action | Shares | Value / amount | ΔOwn | 1W | 1M | 6M | Filing | Story |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Analyst | Wells Fargo | Reiterates to Overweight | PT $865 | Read | |||||||
| Insider | Mosley William DCEO | Sell (Open-market sale) 10b5-1 | 11K sh | $10.29M | -18.1% | — | |||||
| Congress | Lisa C. McClain | Sale | $15,001 - $50,000 | -12.4% | Read | ||||||
| Insider | Morris John ChristopherEVP & CTO | Sell (Open-market sale) 10b5-1 | 9.35K sh | $8.21M | +5.1% | — | |||||
| Congress | Kevin Hern | Sale | $1,001 - $15,000 | +19.2% | -10.4% | Read | |||||
| Analyst | B of A Securities | Reiterates to buy | PT $1,150 | -6.0% | -6.5% | Read | |||||
| Analyst | Cantor Fitzgerald | Reiterates to buy | PT $1,300 | -10.4% | -21.1% | Read | |||||
| Analyst | Morgan Stanley | Reiterates to buy | PT $1,035 | +7.4% | -18.6% | Read | |||||
| Analyst | JP Morgan | Reiterates to buy | PT $920 | +17.5% | -7.5% | Read | |||||
| Insider | Teh Ban SengEVP & Chief Commercial Officer | Sell (Open-market sale) 10b5-1 | 989 sh | $870.51K | +17.5% | -7.5% | — | ||||
| Insider | Gianluca RomanoEVP & CFO | Sell (Open-market sale) | 903 sh | $794.81K | +17.5% | -7.5% | — | ||||
| Insider | William MosleyCEO | Sell (Open-market sale) | 1.77K sh | $1.56M | +17.5% | -7.5% | — | ||||
| Insider | Morris John ChristopherEVP & CTO | Sell (Open-market sale) 10b5-1 | 1.36K sh | $1.20M | +17.5% | -7.5% | — | ||||
| Insider | Teh Ban SengEVP & Chief Commercial Officer | Sell (Option exercise) | 989 sh | +23.3% | -0.8% | Read | |||||
| Insider | William MosleyCEO | Sell (Option exercise) | 3.32K sh | +23.3% | -0.8% | Read | |||||
| Insider | Morris John ChristopherEVP & CTO | Buy (Option exercise) | 942 sh | +23.3% | -0.8% | Read | |||||
| 13F | Rokos Capital Management | Reduced | -154.40K sh | $121.10M | +2.2% | +28.1% | Read | ||||
| 13F | Sanders Capital | Reduced | -4.28M sh | $12B | +0.7% | +26.6% | — | ||||
| 13F | Sanders Capital | Reduced | -4.28M sh | $12.45B | +0.7% | +26.6% | — | ||||
| 13F | Betterment | New | +998 sh | $928.63K | +0.7% | +26.6% | — | ||||
| 13F | Betterment | New | +998 sh | $963.07K | +0.7% | +26.6% | — | ||||
| 13F | Capital Research Global Investors | Added | +1.22M sh | $5.08B | -8.1% | +13.9% | — | ||||
| 13F | Capital Research Global Investors | Added | +1.22M sh | $5.54B | -8.1% | +13.9% | — | ||||
| 13F | National Pension Service | Reduced | -169.46K sh | $733.48M | -9.3% | +7.3% | — | ||||
| 13F | National Pension Service | Reduced | -169.46K sh | $798.79M | -9.3% | +7.3% | — | ||||
| 13F | Sands Capital Management | New | +531.89K sh | $513.28M | +1.6% | +12.0% | — | ||||
| 13F | Wcm Investment Management | Reduced | -808.02K sh | $4.04B | +5.0% | +14.4% | — | ||||
| 13F | Wcm Investment Management | Reduced | -808.02K sh | $4.19B | +5.0% | +14.4% | — | ||||
| 13F | Morgan Stanley | Reduced | -3.02K sh | $2.19M | +13.8% | +36.8% | — | ||||
| 13F | Morgan Stanley | Reduced | -3.02K sh | $2.39M | +13.8% | +36.8% | — | ||||
| Congress | Alan Armstrong | Purchase | $1,001 - $15,000 | +19.3% | +56.8% | +141.6% | — |
1W / 1M / 6M = how STX moved from the trade or filing date.
Insider trading in STX: who is buying and selling
| Insider | Role | Trades | Open-market net | Shares held | Last trade |
|---|---|---|---|---|---|
| Mosley William D | CEO | 1 | -$10.29M | Oct 1, 2026 | |
| Morris John Christopher | EVP & CTO | 3 | -$9.41M | Sep 21, 2026 | |
| Teh Ban Seng | EVP & Chief Commercial Officer | 2 | -$870.51K | Jun 12, 2026 | |
| William Mosley | CEO | 2 | -$1.56M | Jun 12, 2026 | |
| Gianluca Romano | EVP & CFO | 1 | -$794.81K | Jun 12, 2026 |
Members of Congress trading STX
Institutions moving STX (13F)
Analyst ratings on STX
| Date | Firm | Action | Rating | Price target | 1W | 1M | 6M | Story |
|---|---|---|---|---|---|---|---|---|
| Wells Fargo | Reiterates | Overweight | $1,180 → $865 | Read | ||||
| B of A Securities | Reiterates | buy | $1,150 | -6.0% | -6.5% | Read | ||
| Cantor Fitzgerald | Reiterates | buy | $1,300 | -10.4% | -21.1% | Read | ||
| Morgan Stanley | Reiterates | buy | $1,035 | +7.4% | -18.6% | Read | ||
| JP Morgan | Reiterates | buy | $920 | +17.5% | -7.5% | Read |
Frequently asked questions
Are STX insiders buying or selling?
Over the last 12 months 0 insiders made 0 open-market purchases worth $0 and 5 insiders made 6 open-market sales worth $22.93M, a net -$22.93M.
What is the latest insider trade in STX?
Mosley William D, CEO filed a sell (open-market sale) of 11K sh worth $10.29M on Oct 1, 2026.
Which members of Congress traded STX?
3 disclosed trades by Lisa C. McClain, Kevin Hern and Alan Armstrong. The latest was on Sep 30, 2026.
Which institutions changed their STX positions?
Recent 13F filers moving the stock include Sanders Capital, Betterment, Capital Research Global Investors, National Pension Service and Wcm Investment Management.
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Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.
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