SEC Form 4 · Updated Daily
STX
— SEAGATE TECHNOLOGY HOLDINGS PUBLIC LIMITED COMPANY OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| MOSLEY WILLIAM D | Director · Officer | 295,167.5 | 2026-09-01 | S |
| Romano Gianluca | Officer | 28,494 | 2026-08-21 | S |
| Morris John Christopher | Officer | 15,459.75 | 2026-08-21 | S |
| BHATT PRAT | Director | 12,869 | 2026-06-02 | S |
| Tilenius Stephanie | Director | 10,664 | 2026-05-05 | S |
| Chong Kian Fatt | Officer | 9,364 | 2026-08-20 | M |
| Arumugavelu Shankar | Director | 6,626 | 2026-06-04 | S |
| Teh Ban Seng | Officer | 5,210 | 2026-08-21 | S |
| Conyers Yolanda Lee | Director | 3,351 | 2026-09-01 | S |
| Lee James CI | Officer | 347 | 2026-08-24 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-09-01 | Conyers Yolanda Lee | Open-market sale | 750 | $815.11 | 3,351 |
| 2026-09-01 | MOSLEY WILLIAM D | Option exercise (derivative) | 14,000 | $0.00 | 97,100 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 80 | $832.04 | 295,167.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 80 | $830.36 | 295,247.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 80 | $829.10 | 295,327.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 120 | $827.90 | 295,407.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 340 | $826.86 | 295,527.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 580 | $826.00 | 295,867.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 600 | $824.93 | 296,447.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 1,240 | $824.05 | 297,047.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 600 | $822.89 | 298,287.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 480 | $822.05 | 298,887.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 920 | $820.89 | 299,367.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 1,320 | $819.84 | 300,287.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 1,040 | $818.78 | 301,607.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 2,080 | $817.71 | 302,647.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 4,287 | $816.75 | 304,727.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 4,555 | $815.75 | 309,014.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 2,878 | $814.75 | 313,569.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 2,040 | $813.74 | 316,447.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 1,200 | $812.55 | 318,487.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 1,578 | $811.73 | 319,687.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 1,105 | $810.78 | 321,265.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 1,160 | $809.55 | 322,370.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 960 | $808.62 | 323,530.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 160 | $807.19 | 324,490.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 160 | $805.55 | 324,650.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Open-market sale | 357 | $804.61 | 324,810.5 |
| 2026-09-01 | MOSLEY WILLIAM D | Option exercise | 14,000 | $46.23 | 325,167.5 |
| 2026-08-24 | Lee James CI | Option exercise (derivative) | 4,032 | $0.00 | 12,096 |
| 2026-08-24 | Lee James CI | Open-market sale | 40 | $816.96 | 347 |
| 2026-08-24 | Lee James CI | Open-market sale | 40 | $814.27 | 387 |
| 2026-08-24 | Lee James CI | Open-market sale | 40 | $812.72 | 427 |
| 2026-08-24 | Lee James CI | Open-market sale | 120 | $809.61 | 467 |
| 2026-08-24 | Lee James CI | Open-market sale | 80 | $804.87 | 587 |
| 2026-08-24 | Lee James CI | Open-market sale | 440 | $803.57 | 667 |
| 2026-08-24 | Lee James CI | Open-market sale | 593 | $802.67 | 1,107 |
| 2026-08-24 | Lee James CI | Open-market sale | 200 | $801.60 | 1,700 |
| 2026-08-24 | Lee James CI | Open-market sale | 480 | $800.42 | 1,900 |
| 2026-08-24 | Lee James CI | Open-market sale | 567 | $799.44 | 2,380 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.