STX · Seagate Technology Holdings PLC Ordinary Shares (Ireland)
View on chartInsiders & Stakes
| ValueAct Holdings, L.P. Director | ▼ Sell | Open Market | 13,437,070 Shares held | 2/22/2022 | View profile |
| William D. Mosley Chief Executive Officer | ▼ Sell | Open Market | 312,597 Shares held | 8/3/2026 | View profile |
| LUCZO STEPHEN J Director | ▼ Sell | Open Market | 225,941 Shares held | 3/4/2022 | View profile |
| Naik Ravi EVP & CIO | ▼ Sell | Tax Withholding | 38,857 Shares held | 3/22/2023 | View profile |
| Gianluca Romano EVP & CFO | ▼ Sell | Open Market | 35,634 Shares held | 8/7/2026 | View profile |
| Nygaard Jeffrey D. Executive Vice President | ▼ Sell | Open Market | 30,360 Shares held | 2/1/2023 | View profile |
| CLEMMER RICHARD L Director | ▼ Sell | Tax Withholding | 29,704 Shares held | 10/19/2025 | View profile |
| Katherine Schuelke Director | ▼ Sell | Open Market | 29,063 Shares held | 12/9/2023 | View profile |
| Fochtman Jeffrey D. SVP, Business & Marketing | ▼ Sell | Tax Withholding | 14,736 Shares held | 9/12/2022 | View profile |
| Haggart Dylan G. Director | ▼ Sell | Tax Withholding | 14,515 Shares held | 10/19/2025 | View profile |
| Judy Bruner Director | ▼ Sell | Tax Withholding | 14,314 Shares held | 10/19/2025 | View profile |
| Michael R. Cannon Director | ▼ Sell | Tax Withholding | 13,439 Shares held | 10/19/2025 | View profile |
| Prat Bhatt Director | ▼ Sell | Open Market | 12,869 Shares held | 6/2/2026 | View profile |
| John Christopher Morris SVP & CTO | ▼ Sell | Open Market | 11,920 Shares held | 8/3/2026 | View profile |
| Stephanie Tilenius Director | ▼ Sell | Open Market | 10,664 Shares held | 5/5/2026 | View profile |
| Shankar Arumugavelu Director | ▼ Sell | Open Market | 6,626 Shares held | 6/4/2026 | View profile |
| Robert A. Bruggeworth Director | ▲ Buy | Option Exercise | 6,591 Shares held | 10/19/2024 | View profile |
| Yolanda Lee Conyers Director | ▼ Sell | Open Market | 4,101 Shares held | 6/1/2026 | View profile |
| Ban Seng Teh EVP & Chief Commercial Officer | ▼ Sell | Open Market | 2,931 Shares held | 8/13/2026 | View profile |
| Kian Fatt Chong SVP, Global Operations | ▲ Buy | Option Exercise | 2,518 Shares held | 6/11/2026 | View profile |
| Mark Adams Director | ▼ Sell | Tax Withholding | 2,046 Shares held | 10/19/2025 | View profile |
| James CI Lee Chief Legal Officer | ▼ Sell | Open Market | 347 Shares held | 7/30/2026 | View profile |
| Jay L. Geldmacher Director | ▼ Sell | Open Market | 223 Shares held | 1/30/2026 | View profile |
| ZANDER EDWARD J Director | ▼ Sell | Open Market | 0 Shares held | 10/23/2023 | View profile |
Transaction History
| Ban Seng Teh | ▲ Buy | Option Exercise | 1,597 | $110K | 8/13/2026 |
| Ban Seng Teh | ▲ Buy | Option Exercise | 2,636 | $170K | 8/13/2026 |
| Ban Seng Teh | ▲ Buy | Option Exercise | 1,769 | $179K | 8/13/2026 |
| Ban Seng Teh | ▼ Sell | Open Market | 6,002 | $5.5M | 8/13/2026 |
| Ban Seng Teh | ▼ Sell | Open Market | 1,359 | $1.3M | 8/13/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 80 | $67K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 80 | $67K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 120 | $101K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 80 | $67K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 40 | $34K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 80 | $68K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 160 | $136K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 240 | $204K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 320 | $256K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 520 | $416K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 767 | $615K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 679 | $545K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 1,227 | $986K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 620 | $499K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 1,146 | $924K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 840 | $678K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 440 | $355K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 400 | $324K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 320 | $259K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 720 | $584K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 440 | $357K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 412 | $335K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 920 | $749K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 320 | $261K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 480 | $392K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 280 | $229K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 560 | $458K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 400 | $328K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 640 | $526K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 520 | $428K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 360 | $296K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 120 | $99K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 80 | $66K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 40 | $33K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 240 | $199K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 280 | $233K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 200 | $153K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 160 | $122K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 400 | $307K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 560 | $431K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 320 | $246K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 321 | $248K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 320 | $247K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 280 | $217K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 192 | $149K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 127 | $98K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 200 | $155K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 120 | $93K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 440 | $343K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 80 | $62K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 120 | $94K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 200 | $157K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 120 | $94K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 200 | $157K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 200 | $157K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 160 | $126K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 240 | $189K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 80 | $63K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 240 | $190K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 280 | $222K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 547 | $434K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 480 | $382K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 93 | $74K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 240 | $191K | 8/7/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 320 | $255K | 8/7/2026 |
| John Christopher Morris | ▼ Sell | Open Market | 168 | $137K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 400 | $328K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 520 | $427K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 575 | $472K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 840 | $691K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,120 | $922K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,600 | $1.3M | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,280 | $1.1M | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,985 | $1.6M | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,799 | $1.5M | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,641 | $1.4M | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,619 | $1.3M | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,960 | $1.6M | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $266K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 400 | $333K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 200 | $167K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 181 | $151K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 400 | $334K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 160 | $134K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 80 | $67K | 8/3/2026 |
| William D. Mosley | ▲ Buy | Option Exercise | 14,000 | $647K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 80 | $63K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 40 | $31K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 160 | $126K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 120 | $95K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 440 | $348K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 711 | $564K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 480 | $381K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 368 | $292K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 761 | $606K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 680 | $542K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 560 | $447K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 480 | $384K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 520 | $416K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 400 | $320K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 360 | $289K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 520 | $418K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 840 | $676K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 640 | $516K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 280 | $226K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 697 | $564K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 383 | $310K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 520 | $421K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 640 | $520K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 400 | $325K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 366 | $298K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 394 | $321K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $261K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 440 | $360K | 8/3/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $262K | 8/3/2026 |
| James CI Lee | ▼ Sell | Open Market | 694 | $609K | 7/30/2026 |
| James CI Lee | ▼ Sell | Open Market | 542 | $491K | 7/23/2026 |
| James CI Lee | ▲ Buy | Option Exercise | 1,237 | $0 | 7/22/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,480 | $1.4M | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 880 | $810K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 880 | $811K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 720 | $664K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,160 | $1.1M | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 770 | $712K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,019 | $944K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 571 | $529K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 620 | $575K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $297K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 280 | $260K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 120 | $112K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $299K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 200 | $187K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 3 | $3K | 7/1/2026 |
| William D. Mosley | ▲ Buy | Option Exercise | 14,000 | $647K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $284K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $285K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 120 | $107K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 200 | $178K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 40 | $36K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 266 | $238K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 254 | $227K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 400 | $359K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 340 | $305K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 300 | $270K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 308 | $277K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 401 | $361K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $289K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 560 | $506K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 720 | $651K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $290K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 609 | $552K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 391 | $355K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 560 | $509K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 441 | $401K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 399 | $363K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 960 | $875K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 813 | $742K | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,596 | $1.5M | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 2,379 | $2.2M | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 2,308 | $2.1M | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,185 | $1.1M | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,762 | $1.6M | 7/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 2,065 | $1.9M | 7/1/2026 |
| John Christopher Morris | ▼ Sell | Open Market | 466 | $410K | 6/12/2026 |
| John Christopher Morris | ▼ Sell | Open Market | 898 | $790K | 6/12/2026 |
| Ban Seng Teh | ▼ Sell | Open Market | 989 | $871K | 6/12/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 903 | $795K | 6/12/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,768 | $1.6M | 6/12/2026 |
| John Christopher Morris | ▲ Buy | Option Exercise | 942 | $0 | 6/11/2026 |
| Ban Seng Teh | ▲ Buy | Option Exercise | 989 | $0 | 6/11/2026 |
| Kian Fatt Chong | ▲ Buy | Option Exercise | 678 | $0 | 6/11/2026 |
| Gianluca Romano | ▲ Buy | Option Exercise | 1,695 | $0 | 6/11/2026 |
| William D. Mosley | ▲ Buy | Option Exercise | 3,319 | $0 | 6/11/2026 |
| Ban Seng Teh | ▼ Sell | Open Market | 663 | $545K | 6/10/2026 |
| John Christopher Morris | ▼ Sell | Open Market | 254 | $209K | 6/10/2026 |
| John Christopher Morris | ▼ Sell | Open Market | 320 | $263K | 6/10/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,537 | $1.3M | 6/10/2026 |
| William D. Mosley | ▼ Sell | Open Market | 1,318 | $1.1M | 6/10/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 524 | $430K | 6/10/2026 |
| Gianluca Romano | ▼ Sell | Open Market | 827 | $680K | 6/10/2026 |
| Kian Fatt Chong | ▲ Buy | Option Exercise | 202 | $0 | 6/9/2026 |
| Kian Fatt Chong | ▲ Buy | Option Exercise | 379 | $0 | 6/9/2026 |
| Ban Seng Teh | ▲ Buy | Option Exercise | 599 | $0 | 6/9/2026 |
| Ban Seng Teh | ▲ Buy | Option Exercise | 663 | $0 | 6/9/2026 |
| John Christopher Morris | ▲ Buy | Option Exercise | 499 | $0 | 6/9/2026 |
| John Christopher Morris | ▲ Buy | Option Exercise | 631 | $0 | 6/9/2026 |
| William D. Mosley | ▲ Buy | Option Exercise | 2,815 | $0 | 6/9/2026 |
| William D. Mosley | ▲ Buy | Option Exercise | 2,415 | $0 | 6/9/2026 |
| Gianluca Romano | ▲ Buy | Option Exercise | 959 | $0 | 6/9/2026 |
| Gianluca Romano | ▲ Buy | Option Exercise | 1,515 | $0 | 6/9/2026 |
| Shankar Arumugavelu | ▼ Sell | Open Market | 1,000 | $928K | 6/4/2026 |
| Prat Bhatt | ▼ Sell | Open Market | 1,000 | $930K | 6/2/2026 |
| Yolanda Lee Conyers | ▼ Sell | Open Market | 750 | $664K | 6/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 320 | $293K | 6/1/2026 |
| William D. Mosley | ▼ Sell | Open Market | 480 | $441K | 6/1/2026 |