STX Seagate Technology
Nasdaq · SEC CIK 1137789 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $572.01M 83 sales by 11 insiders
- Filings on record
- 411 since 2021-07-22, latest 2026-09-22 16:49
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| MOSLEY WILLIAM D | CEO, Dir | — | $281.22M |
| Romano Gianluca | EVP, CFO | — | $146.39M |
| Teh Ban Seng | EVP, Chief Commercial Off | — | $89.27M |
| Morris John Christopher | EVP, CTO | — | $30.59M |
| Lee James CI | EVP, CLO | — | $12.56M |
| Chong Kian Fatt | EVP Gbl Ops | — | $4.36M |
| Arumugavelu Shankar | Dir | — | $2.40M |
| Conyers Yolanda Lee | Dir | — | $1.78M |
| Tilenius Stephanie | Dir | — | $1.76M |
| BHATT PRAT | Dir | — | $929.9K |
Transactions 605
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-03-16 | 2026-03-13 | STX | Morris John Christopher | EVP, CTO | S - Sale | $377.44 | -112 | 17.6K | -0.6% | -$42.3K | |
| D | 2026-03-12 | 2026-03-11 | STX | Morris John Christopher | EVP, CTO | M - OptEx | $0.00 | +942 | 18.1K | +5% | $0 |
| D | 2026-03-12 | 2026-03-11 | STX | Morris John Christopher | EVP, CTO | F - Tax | $385.97 | -430 | 17.7K | -2% | -$166.0K |
| D | 2026-03-12 | 2026-03-11 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $0.00 | +989 | 11.2K | +10% | $0 |
| D | 2026-03-12 | 2026-03-11 | STX | Chong Kian Fatt | EVP Gbl Ops | M - OptEx | $0.00 | +678 | 1,259 | +117% | $0 |
| D | 2026-03-12 | 2026-03-11 | STX | Romano Gianluca | EVP, CFO | M - OptEx | $0.00 | +1,695 | 66.2K | +3% | $0 |
| D | 2026-03-12 | 2026-03-11 | STX | Romano Gianluca | EVP, CFO | F - Tax | $385.97 | -847 | 65.3K | -1% | -$326.9K |
| D | 2026-03-12 | 2026-03-11 | STX | MOSLEY WILLIAM D | CEO, Dir | M - OptEx | $0.00 | +3,319 | 401.8K | +0.8% | $0 |
| D | 2026-03-12 | 2026-03-11 | STX | MOSLEY WILLIAM D | CEO, Dir | F - Tax | $385.97 | -1,658 | 400.2K | -0.4% | -$639.9K |
| DM | 2026-03-11 | 2026-03-09 | STX | Morris John Christopher | EVP, CTO | F - Tax | $374.33 | -516 | 17.2K | -3% | -$193.2K |
| DM | 2026-03-11 | 2026-03-09 | STX | Morris John Christopher | EVP, CTO | M - OptEx | $0.00 | +1,130 | 17.5K | +7% | $0 |
| DM | 2026-03-11 | 2026-03-09 | STX | MOSLEY WILLIAM D | CEO, Dir | M - OptEx | $0.00 | +5,230 | 399.7K | +1% | $0 |
| DM | 2026-03-11 | 2026-03-09 | STX | MOSLEY WILLIAM D | CEO, Dir | F - Tax | $374.33 | -2,613 | 397.3K | -0.7% | -$978.1K |
| DM | 2026-03-11 | 2026-03-09 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $0.00 | +1,262 | 10.3K | +14% | $0 |
| DM | 2026-03-11 | 2026-03-09 | STX | Chong Kian Fatt | EVP Gbl Ops | M - OptEx | $0.00 | +581 | 202 | New | $0 |
| DM | 2026-03-11 | 2026-03-09 | STX | Romano Gianluca | EVP, CFO | F - Tax | $374.33 | -1,236 | 63.7K | -2% | -$462.7K |
| DM | 2026-03-11 | 2026-03-09 | STX | Romano Gianluca | EVP, CFO | M - OptEx | $0.00 | +2,473 | 64.2K | +4% | $0 |
| 2026-03-03 | 2026-03-02 | STX | Conyers Yolanda Lee | Dir | S - Sale | $393.59 | -750 | 4,851 | -13% | -$295.2K | |
| M | 2026-03-03 | 2026-03-02 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $384.76 | -20.0K | 399.7K | -5% | -$7.70M |
| 2026-02-25 | 2026-02-24 | STX | Morris John Christopher | EVP, CTO | S - Sale | $410.00 | -240 | 16.6K | -1% | -$98.4K | |
| DM | 2026-02-23 | 2026-02-20+ | STX | Romano Gianluca | EVP, CFO | F - Tax | $411.11 | -13.1K | 56.3K | -19% | -$5.37M |
| DM | 2026-02-23 | 2026-02-20+ | STX | Romano Gianluca | EVP, CFO | M - OptEx | $0.00 | +25.9K | 62.3K | +71% | $0 |
| D | 2026-02-23 | 2026-02-20 | STX | Morris John Christopher | EVP, CTO | M - OptEx | $0.00 | +4,427 | 18.8K | +31% | $0 |
| D | 2026-02-23 | 2026-02-20 | STX | Morris John Christopher | EVP, CTO | F - Tax | $411.11 | -2,032 | 16.8K | -11% | -$835.4K |
| D | 2026-02-23 | 2026-02-23 | STX | Chong Kian Fatt | EVP Gbl Ops | S - Sale+OE | $416.48 | -5,846 | 0 | -100% | -$2.43M |
| D | 2026-02-23 | 2026-02-20 | STX | Chong Kian Fatt | EVP Gbl Ops | M - OptEx | $0.00 | +4,427 | 5,846 | +312% | $0 |
| D | 2026-02-23 | 2026-02-20 | STX | MOSLEY WILLIAM D | CEO, Dir | F - Tax | $411.11 | -5,966 | 415.9K | -1% | -$2.45M |
| D | 2026-02-23 | 2026-02-20 | STX | MOSLEY WILLIAM D | CEO, Dir | M - OptEx | $0.00 | +11.8K | 421.9K | +3% | $0 |
| D | 2026-02-23 | 2026-02-20 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $0.00 | +5,905 | 8,997 | +191% | $0 |
| M | 2026-02-03 | 2026-02-02 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $429.27 | -20.0K | 412.0K | -5% | -$8.59M |
| D | 2026-02-02 | 2026-01-29 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $101.34 | +9,433 | 23.3K | +68% | +$955.9K |
| DM | 2026-02-02 | 2026-01-29 | STX | Teh Ban Seng | EVP, Chief Commercial Off | S - Sale+OE | $442.29 | -20.2K | 3,092 | -87% | -$8.93M |
| 2026-02-02 | 2026-01-30 | STX | Geldmacher Jay L | Dir | S - Sale | $448.03 | -925 | 223 | -81% | -$414.4K | |
| 2026-01-28 | 2026-01-26 | STX | Lee James CI | EVP, CLO | S - Sale | $348.85 | -673 | 257 | -72% | -$234.8K | |
| D | 2026-01-26 | 2026-01-22 | STX | Lee James CI | EVP, CLO | F - Tax | $346.53 | -564 | 930 | -38% | -$195.4K |
| D | 2026-01-26 | 2026-01-22 | STX | Lee James CI | EVP, CLO | M - OptEx | $0.00 | +1,237 | 1,494 | +481% | $0 |
| DM | 2026-01-14 | 2026-01-12 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $66.02 | +1,412 | 14.2K | +11% | +$93.2K |
| D | 2026-01-14 | 2026-01-12 | STX | Teh Ban Seng | EVP, Chief Commercial Off | S - Sale+OE | $299.31 | -1,412 | 13.7K | -9% | -$422.6K |
| M | 2026-01-06 | 2026-01-02 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $285.56 | -20.0K | 449.1K | -4% | -$5.71M |
| 2025-12-16 | 2025-12-15 | STX | Morris John Christopher | EVP, CTO | S - Sale | $291.89 | -113 | 14.2K | -0.8% | -$33.0K | |
| D | 2025-12-12 | 2025-12-11 | STX | Chong Kian Fatt | EVP Gbl Ops | M - OptEx | $0.00 | +678 | 1,258 | +117% | $0 |
| D | 2025-12-12 | 2025-12-11 | STX | MOSLEY WILLIAM D | CEO, Dir | F - Tax | $307.85 | -1,678 | 449.9K | -0.4% | -$516.6K |
| D | 2025-12-12 | 2025-12-11 | STX | MOSLEY WILLIAM D | CEO, Dir | M - OptEx | $0.00 | +3,319 | 451.6K | +0.7% | $0 |
| DM | 2025-12-12 | 2025-12-11 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $38.81 | +2,400 | 14.8K | +19% | +$93.1K |
| D | 2025-12-12 | 2025-12-11 | STX | Teh Ban Seng | EVP, Chief Commercial Off | S - Sale+OE | $295.90 | -2,010 | 13.7K | -13% | -$594.8K |
| D | 2025-12-12 | 2025-12-11 | STX | Romano Gianluca | EVP, CFO | F - Tax | $307.85 | -857 | 50.4K | -2% | -$263.8K |
| D | 2025-12-12 | 2025-12-11 | STX | Romano Gianluca | EVP, CFO | M - OptEx | $0.00 | +1,695 | 51.2K | +3% | $0 |
| D | 2025-12-12 | 2025-12-11 | STX | Morris John Christopher | EVP, CTO | M - OptEx | $0.00 | +941 | 14.8K | +7% | $0 |
| D | 2025-12-12 | 2025-12-11 | STX | Morris John Christopher | EVP, CTO | F - Tax | $307.85 | -430 | 14.4K | -3% | -$132.4K |
| DM | 2025-12-11 | 2025-12-09 | STX | Chong Kian Fatt | EVP Gbl Ops | M - OptEx | $0.00 | +580 | 580 | New | $0 |
| DM | 2025-12-11 | 2025-12-09 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $0.00 | +1,262 | 12.6K | +11% | $0 |
| DM | 2025-12-11 | 2025-12-09 | STX | Morris John Christopher | EVP, CTO | F - Tax | $282.86 | -516 | 13.5K | -4% | -$146.0K |
| DM | 2025-12-11 | 2025-12-09 | STX | Morris John Christopher | EVP, CTO | M - OptEx | $0.00 | +1,130 | 13.7K | +9% | $0 |
| DM | 2025-12-11 | 2025-12-09 | STX | MOSLEY WILLIAM D | CEO, Dir | F - Tax | $282.86 | -2,644 | 448.3K | -0.6% | -$747.9K |
| DM | 2025-12-11 | 2025-12-09 | STX | MOSLEY WILLIAM D | CEO, Dir | M - OptEx | $0.00 | +5,230 | 448.5K | +1% | $0 |
| DM | 2025-12-11 | 2025-12-09 | STX | Romano Gianluca | EVP, CFO | F - Tax | $282.86 | -1,251 | 48.8K | -3% | -$353.9K |
| DM | 2025-12-11 | 2025-12-09 | STX | Romano Gianluca | EVP, CFO | M - OptEx | $0.00 | +2,473 | 50.3K | +5% | $0 |
| 2025-12-02 | 2025-12-02 | STX | Conyers Yolanda Lee | Dir | S - Sale | $272.91 | -750 | 5,601 | -12% | -$204.7K | |
| M | 2025-12-02 | 2025-12-01 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $271.03 | -20.0K | 452.5K | -4% | -$5.42M |
| M | 2025-11-14 | 2025-11-13 | STX | Romano Gianluca | EVP, CFO | S - Sale | $266.69 | -8,002 | 49.8K | -14% | -$2.13M |
| DM | 2025-11-14 | 2025-11-12 | STX | Romano Gianluca | EVP, CFO | S - Sale+OE | $285.16 | -54.0K | 102.5K | -35% | -$15.40M |
| DM | 2025-11-14 | 2025-11-12 | STX | Romano Gianluca | EVP, CFO | M - OptEx | $80.84 | +52.5K | 110.3K | +91% | +$4.25M |
| 2025-11-12 | 2025-11-11 | STX | Lee James CI | EVP, CLO | S - Sale | $288.98 | -697 | 257 | -73% | -$201.4K | |
| 2025-11-12 | 2025-11-10 | STX | Arumugavelu Shankar | Dir | S - Sale | $294.57 | -5,000 | 7,626 | -40% | -$1.47M | |
| DA | 2025-11-12 | 2025-10-25 | STX | Szlosek Thomas A | Dir | F - Tax | $234.12 | -113 | 357 | -24% | -$26.5K |
| DA | 2025-11-12 | 2025-10-25 | STX | Szlosek Thomas A | Dir | M - OptEx | $0.00 | +470 | 470 | New | $0 |
| DM | 2025-11-12 | 2025-11-11 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $66.02 | +1,412 | 12.6K | +13% | +$93.2K |
| D | 2025-11-12 | 2025-11-11 | STX | Teh Ban Seng | EVP, Chief Commercial Off | S - Sale+OE | $288.98 | -1,412 | 12.0K | -10% | -$408.0K |
| M | 2025-11-05 | 2025-11-03 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $262.82 | -20.0K | 478.0K | -4% | -$5.26M |
| 2025-11-05 | 2025-11-05 | STX | Teh Ban Seng | EVP, Chief Commercial Off | S - Sale | $270.00 | -6,000 | 12.0K | -33% | -$1.62M | |
| 2025-11-05 | 2025-11-03 | STX | Tilenius Stephanie | Dir | S - Sale | $266.41 | -2,046 | 12.2K | -14% | -$545.1K | |
| 2025-11-03 | 2025-10-30 | STX | Chong Kian Fatt | EVP Gbl Ops | S - Sale | $272.14 | -7,078 | 0 | -100% | -$1.93M | |
| 2025-11-03 | 2025-10-31 | STX | Geldmacher Jay L | Dir | S - Sale | $269.10 | -1,250 | 1,148 | -52% | -$336.4K | |
| D | 2025-10-24 | 2025-10-22 | STX | Lee James CI | EVP, CLO | F - Tax | $215.05 | -540 | 954 | -36% | -$116.1K |
| D | 2025-10-24 | 2025-10-22 | STX | Lee James CI | EVP, CLO | M - OptEx | $0.00 | +1,237 | 1,494 | +481% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | CLEMMER RICHARD L | Dir | M - OptEx | $0.00 | +2,693 | 30.4K | +10% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | CLEMMER RICHARD L | Dir | F - Tax | $225.40 | -647 | 29.7K | -2% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | BHATT PRAT | Dir | M - OptEx | $0.00 | +2,693 | 14.5K | +23% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | BHATT PRAT | Dir | F - Tax | $225.40 | -647 | 13.9K | -4% | -$145.8K |
| DI | 2025-10-21 | 2025-10-19 | STX | BRUNER JUDY | Dir | M - OptEx | $0.00 | +2,693 | 15.0K | +22% | $0 |
| DI | 2025-10-21 | 2025-10-19 | STX | BRUNER JUDY | Dir | F - Tax | $225.40 | -647 | 14.3K | -4% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | Conyers Yolanda Lee | Dir | M - OptEx | $0.00 | +2,693 | 6,998 | +63% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | Conyers Yolanda Lee | Dir | F - Tax | $225.40 | -647 | 6,351 | -9% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | CANNON MICHAEL R | Dir | M - OptEx | $0.00 | +3,427 | 14.3K | +32% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | CANNON MICHAEL R | Dir | F - Tax | $225.40 | -823 | 13.4K | -6% | -$185.5K |
| D | 2025-10-21 | 2025-10-19 | STX | Haggart Dylan G. | Dir | M - OptEx | $0.00 | +2,693 | 15.2K | +22% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | Haggart Dylan G. | Dir | F - Tax | $225.40 | -647 | 14.5K | -4% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | Tilenius Stephanie | Dir | M - OptEx | $0.00 | +2,693 | 14.9K | +22% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | Tilenius Stephanie | Dir | F - Tax | $225.40 | -647 | 14.3K | -4% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | Adams Mark | Dir | M - OptEx | $0.00 | +2,693 | 2,693 | New | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | Adams Mark | Dir | F - Tax | $225.40 | -647 | 2,046 | -24% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | Geldmacher Jay L | Dir | M - OptEx | $0.00 | +2,693 | 3,045 | +765% | $0 |
| D | 2025-10-21 | 2025-10-19 | STX | Geldmacher Jay L | Dir | F - Tax | $225.40 | -647 | 2,398 | -21% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | Arumugavelu Shankar | Dir | F - Tax | $225.40 | -647 | 12.6K | -5% | -$145.8K |
| D | 2025-10-21 | 2025-10-19 | STX | Arumugavelu Shankar | Dir | M - OptEx | $0.00 | +2,693 | 13.3K | +25% | $0 |
| DM | 2025-10-15 | 2025-10-13 | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $66.02 | +1,410 | 19.5K | +8% | +$93.1K |
| D | 2025-10-15 | 2025-10-13 | STX | Teh Ban Seng | EVP, Chief Commercial Off | S - Sale+OE | $225.56 | -1,410 | 18.0K | -7% | -$318.0K |
| M | 2025-10-03 | 2025-10-01 | STX | MOSLEY WILLIAM D | CEO, Dir | S - Sale | $249.90 | -20.0K | 498.8K | -4% | -$5.00M |
| 2025-09-17 | 2025-09-16 | STX | Morris John Christopher | EVP, CTO | S - Sale | $211.26 | -377 | 13.2K | -3% | -$79.6K | |
| DM | 2025-09-15 | 2025-09-11+ | STX | Teh Ban Seng | EVP, Chief Commercial Off | M - OptEx | $7.27 | +16.6K | 7,904 | New | +$120.6K |
Purchase Sale Sale after option exercise All abbreviations