Seagate (STX) insider trading
17 directors and officers declare holding shares of Seagate (STX), each in their own filing with the SEC. The largest is William D. Mosley (CEO · Director) with 362,108 shares, 0.16% of the company, worth $283.4M at the last close. The most recent move on file: William D. Mosley sold 11,002 shares at $929.01 on Oct 1, 2026. Of the 13 with a trade on file, 3 last bought and 10 last sold. Purchases and sales are as reported on Forms 3, 4 and 5 — the SEC counts private transactions too, and many large sales follow a plan arranged in advance. Holdings are never added up: two spouses often report the same shares, and a joint filing carries a fund's.
| Insider | Role | Shares | % of company | Value | Last trade on file | Filed |
|---|---|---|---|---|---|---|
| William D. Mosley | CEO · Director | 362,108 | 0.16% | $283.4M | sold 11,002 shares at $929.01 on Oct 1, 2026 | Oct 1, 2026 |
| Gianluca Romano | EVP & CFO | 70,757 | 0.03% | $55.4M | sold 49,984 shares at $772.16 on Sep 15, 2026 | Sep 15, 2026 |
| Rick Clemmer | Director | 33,571 | 0.01% | $26.3M | — | Oct 19, 2025 |
| Kian Fatt Chong | EVP Global Operations | 25,093 | 0.01% | $19.6M | bought 14,470 shares on Sep 14, 2026 | Sep 14, 2026 |
| John Christopher Morris | EVP & CTO | 22,693 | 0.01% | $17.8M | sold 9,354 shares at $863.66 on Sep 21, 2026 | Sep 21, 2026 |
| Michael R. Cannon | Director | 20,324 | <0.01% | $15.9M | — | Oct 19, 2025 |
| Judy Bruner | Director | 18,585 | <0.01% | $14.5M | bought 2,693 shares on Oct 19, 2025 | Oct 19, 2025 |
| Dylan G. Haggart | Director | 14,515 | <0.01% | $11.4M | — | Oct 19, 2025 |
| Prat Bhatt | Director | 12,869 | <0.01% | $10.1M | sold 1,000 shares at $929.88 on Jun 2, 2026 | Jun 2, 2026 |
| Stephanie Tilenius | Director | 10,664 | <0.01% | $8.3M | sold 1,580 shares at $766.60 on May 5, 2026 | May 5, 2026 |
| Shankar Arumugavelu | Director | 6,626 | <0.01% | $5.2M | sold 1,000 shares at $927.68 on Jun 4, 2026 | Jun 4, 2026 |
| Ban Seng Teh | EVP & Chief Commercial Officer | 5,810 | <0.01% | $4.5M | sold 52,730 shares at $771.38 on Sep 15, 2026 | Sep 15, 2026 |
| Yolanda Lee Conyers | Director | 3,351 | <0.01% | $2.6M | sold 750 shares at $815.11 on Sep 1, 2026 | Sep 1, 2026 |
| Mark Adams | Director | 2,046 | <0.01% | $1.6M | — | Oct 19, 2025 |
| Thomas A. Szlosek | Director | 357 | <0.01% | $279,397.13 | bought 470 shares on Oct 25, 2025 | Oct 25, 2025 |
| James CI Lee | EVP & CLO | 347 | <0.01% | $271,570.88 | sold 9,013 shares at $774.84 on Aug 24, 2026 | Aug 24, 2026 |
| Jay L. Geldmacher | Director | 223 | <0.01% | $174,525.38 | sold 925 shares at $448.03 on Jan 30, 2026 | Jan 30, 2026 |
Each insider at Seagate
- William D. Mosley — CEO · Director
- Gianluca Romano — EVP & CFO
- Rick Clemmer — Director
- Kian Fatt Chong — EVP Global Operations
- John Christopher Morris — EVP & CTO
- Michael R. Cannon — Director
- Judy Bruner — Director
- Dylan G. Haggart — Director
- Prat Bhatt — Director
- Stephanie Tilenius — Director
- Shankar Arumugavelu — Director
- Ban Seng Teh — EVP & Chief Commercial Officer
No longer filing
- Robert A. Bruggeworth — Director
What insiders bought and sold across AI stocks · All filings on sec.gov