STXNasdaqComputer Storage DevicesFiscal year ends June 27
Seagate Technology Holdings plc
Financials through Q4 FY2026, quarter ended Jul 3, 2026Last filing: 10-K on Aug 4, 2026
$660.81+21.80 (+3.41%)
Close on Oct 19, 2026
- Market cap
- $153.31B
- P/E (TTM)
- 47.5
- Dividend yield
- 0.44%
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
82.9%
188M of 227M shares
Institutional holders
1,951
578 new, 66 sold out
Net institutional buying
-1M
In Q2 2026
Insider trades, 12 months
0 buys · 673 sales
Net sold $566.69M
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Vanguard Capital Management | 16,318,822 | 7.48% | 13G (passive) | Mar 31, 2026 |
| Lewis A. Sanders | 13,035,275 | 5.98% | 13G (passive) amendment | Mar 31, 2026 |
| BlackRock, Inc. | 12,954,300 | 6.10% | 13G (passive) amendment | Mar 31, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of STX | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| BlackRock, Inc. | 15,166,793 | 6.69% | $14.64B | +892,710 | 0.22% |
| Vanguard Capital Management LLC | 14,630,067 | 6.46% | $14.12B | +474,394 | 0.30% |
| State Street Corp | 9,911,669 | 4.37% | $9.57B | +590,037 | 0.28% |
| FMR LLC | 8,153,134 | 3.60% | $7.87B | −23,784 | 0.34% |
| Vanguard Portfolio Management LLC | 7,999,686 | 3.53% | $7.72B | −3,095,222 | 0.35% |
| Invesco Ltd. | 7,536,880 | 3.33% | $7.27B | +360,182 | 0.58% |
| Wcm Investment Management, LLC | 5,320,463 | 2.35% | $5.15B | +973,611 | 9.34% |
| JPMorgan Chase & Co | 5,201,103 | 2.29% | $5.04B | −1,458,136 | 0.28% |
| Geode Capital Management, LLC | 5,155,435 | 2.27% | $4.96B | +94,607 | 0.26% |
| Morgan Stanley | 4,720,524 | 2.08% | $4.56B | −38,788 | 0.24% |
| Capital Research Global Investors | 4,326,781 | 1.91% | $4.18B | −1,409,289 | 0.58% |
| Sanders Capital, LLC | 3,487,219 | 1.54% | $3.37B | −9,409,982 | 3.37% |
| Goldman Sachs Group Inc | 3,440,106 | 1.52% | $3.32B | −133,684 | 0.29% |
| Norges Bank | 3,095,723 | 1.37% | $2.99B | New | 0.30% |
| Massachusetts Financial Services Co /Ma/ | 2,560,276 | 1.13% | $2.51B | +24,154 | 0.80% |
| Wellington Management Group Llp | 2,414,136 | 1.07% | $2.33B | +2,326,538 | 0.40% |
| Arrowstreet Capital, Limited Partnership | 2,138,429 | 0.94% | $2.06B | +704,934 | 0.92% |
| Bank Of America Corp /De/ | 2,115,112 | 0.93% | $2.04B | −1,265,328 | 0.13% |
| DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt am Main | 2,108,402 | 0.93% | $2.03B | −1,511,670 | 1.56% |
| Northern Trust Corp | 1,902,241 | 0.84% | $1.84B | +5,248 | 0.21% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 1,951 | 188M | 82.9% | 578 / 623 | 599 / 66 | 31M | 32M |
| Q1 2026 | 1,461 | 190M | 83.7% | 308 / 491 | 501 / 102 | 48M | 24M |
| Q4 2025 | 1,271 | 194M | 85.7% | 255 / 446 | 407 / 85 | 32M | 45M |
| Q3 2025 | 1,117 | 207M | 91.5% | 275 / 370 | 320 / 83 | 34M | 26M |
| Q2 2025 | 947 | 200M | 88.1% | 238 / 310 | 273 / 76 | 27M | 26M |
| Q1 2025 | 795 | 199M | 87.7% | 99 / 281 | 287 / 92 | 25M | 17M |
| Q4 2024 | 801 | 191M | 84.4% | 106 / 327 | 259 / 111 | 25M | 42M |
| Q3 2024 | 816 | 209M | 92.1% | 107 / 303 | 264 / 75 | 28M | 15M |
| Q2 2024 | 793 | 209M | 92.3% | 107 / 291 | 254 / 70 | 18M | 22M |
| Q1 2024 | 764 | 214M | 94.3% | 109 / 247 | 275 / 61 | 24M | 21M |
| Q4 2023 | 724 | 211M | 93.2% | 139 / 206 | 261 / 54 | 42M | 16M |
| Q3 2023 | 651 | 185M | 81.7% | 71 / 201 | 242 / 67 | 26M | 17M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of STX | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 7,118,460 | 3.14% | $6.87B | 0.30% | Jun 30, 2026 |
| Vanguard 500 Index Fund | 5,814,131 | 2.57% | $5.61B | 0.34% | Jun 30, 2026 |
| Invesco QQQ Trust, Series 1 | 4,759,747 | 2.10% | $4.59B | 0.94% | Jun 30, 2026 |
| Vanguard Mid-Cap Index Fund | 2,429,312 | 1.07% | $2.34B | 1.05% | Jun 30, 2026 |
| Vanguard Growth Index Fund | 2,394,278 | 1.06% | $2.31B | 0.61% | Jun 30, 2026 |
| Vanguard Information Technology Index Fund | 1,570,750 | 0.69% | $1.38B | 0.80% | May 31, 2026 |
| WCM Focused International Growth Fund | 1,364,300 | 0.60% | $1.32B | 5.85% | Jun 30, 2026 |
| Vanguard Institutional Index Fund | 1,217,274 | 0.54% | $1.17B | 0.34% | Jun 30, 2026 |
| Roundhill Memory ETF | 1,125,391 | 0.50% | $1.09B | 4.19% | Jun 30, 2026 |
| Invesco NASDAQ 100 ETF | 926,502 | 0.41% | $815.14M | 0.84% | May 31, 2026 |
| Growth-Income Fund | 872,636 | 0.39% | $842.09M | 1.83% | Jun 30, 2026 |
| Investment Co of America | 862,994 | 0.38% | $832.79M | 0.45% | Jun 30, 2026 |
| Vanguard Mid-Cap Growth Index Fund | 859,383 | 0.38% | $829.30M | 2.38% | Jun 30, 2026 |
| Vanguard Wellington Fund | 738,160 | 0.33% | $649.43M | 0.52% | May 31, 2026 |
| Capital Income Builder | 726,827 | 0.32% | $622.26M | 0.48% | Jul 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| William D. Mosley | CEO, Director | 378,108 | 0.17% | Sep 16, 2026 |
| John Christopher Morris | EVP & CTO | 22,773 | 0.01% | Sep 22, 2026 |
| Ban Seng Teh | EVP & Chief Commercial Officer | 8,290 | 0.00% | Sep 16, 2026 |
| Gianluca Romano | EVP & CFO | 70,757 | 0.03% | Sep 16, 2026 |
| Kian Fatt Chong | EVP Global Operations | 25,093 | 0.01% | Sep 16, 2026 |
| James CI Lee | EVP & CLO | 387 | 0.00% | Aug 26, 2026 |
| Yolanda Lee Conyers | Director | 3,351 | 0.00% | Sep 3, 2026 |
| Shankar Arumugavelu | Director | 6,626 | 0.00% | Jun 4, 2026 |
| Prat Bhatt | Director | 12,869 | 0.01% | Jun 2, 2026 |
| Stephanie Tilenius | Director | 10,664 | 0.00% | May 6, 2026 |
| Jay L. Geldmacher | Director | 223 | 0.00% | Feb 2, 2026 |
| Thomas A. Szlosek | Director | 470 | 0.00% | Nov 12, 2025 |
| Richard L. Clemmer | Director | 33,571 | 0.01% | Oct 28, 2025 |
| Michael R. Cannon | Director | 20,324 | 0.01% | Oct 28, 2025 |
| Mark Adams | Director | 16,354 | 0.01% | Oct 28, 2025 |
| Dylan G. Haggart | Director | 26,411,080 | 11.65% | Oct 28, 2025 |
| Judy Bruner | Director | 18,585 | 0.01% | Oct 21, 2025 |
| Robert A. Bruggeworth | Director | 6,591 | 0.00% | Oct 22, 2024 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −80 | $897.28 | $71.78K | 22,773 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −915 | $894.27 | $818.26K | 22,853 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −40 | $893.15 | $35.73K | 23,768 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −40 | $890.54 | $35.62K | 23,808 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −120 | $887.92 | $106.55K | 23,848 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −40 | $886.27 | $35.45K | 23,968 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −320 | $883.08 | $282.59K | 24,008 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −200 | $881.90 | $176.38K | 24,328 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −741 | $881.16 | $652.94K | 24,528 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −200 | $879.71 | $175.94K | 25,269 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −280 | $878.38 | $245.95K | 25,469 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −418 | $877.36 | $366.74K | 25,749 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −760 | $876.54 | $666.17K | 26,167 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −974 | $875.35 | $852.59K | 26,927 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −986 | $874.50 | $862.26K | 27,901 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −1,040 | $873.49 | $908.43K | 28,887 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −1,000 | $872.42 | $872.42K | 29,927 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −520 | $871.56 | $453.21K | 30,927 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −200 | $870.28 | $174.06K | 31,447 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −80 | $869.21 | $69.54K | 31,647 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −160 | $868.11 | $138.90K | 31,727 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −40 | $865.80 | $34.63K | 31,887 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −80 | $865.11 | $69.21K | 31,927 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −40 | $863.66 | $34.55K | 32,007 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −40 | $899.53 | $35.98K | 22,733 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Sale(10b5-1 plan) | −40 | $902.07 | $36.08K | 22,693 |
| John Christopher Morris EVP & CTO | Sep 21, 2026 | Option exercise | +915 | $158.40 | $144.94K | 32,047 |
| William D. Mosley CEO, Director | Sep 15, 2026 | Sale | −97,889.25 | $772.14 | $75.58M | 378,108 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −400 | $799.03 | $319.61K | 8,290 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,280 | $794.72 | $1.02M | 12,973 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −560 | $791.36 | $443.16K | 14,253 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,760 | $789.84 | $1.39M | 14,813 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −280 | $788.43 | $220.76K | 16,573 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −120 | $787.26 | $94.47K | 16,853 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,040 | $786.14 | $817.59K | 16,973 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,000 | $784.45 | $784.45K | 18,013 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,760 | $783.28 | $1.38M | 19,013 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −4,147 | $782.56 | $3.25M | 20,773 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,600 | $781.35 | $1.25M | 24,920 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −2,453 | $780.29 | $1.91M | 26,520 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −6,682 | $779.27 | $5.21M | 28,973 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −7,259 | $778.35 | $5.65M | 35,655 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −3,987 | $777.22 | $3.10M | 42,914 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −3,242 | $776.20 | $2.52M | 46,901 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −2,315 | $775.01 | $1.79M | 50,143 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,717 | $774.01 | $1.33M | 52,458 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −530 | $797.97 | $422.92K | 8,690 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −3,451 | $772.65 | $2.67M | 54,175 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −914 | $771.38 | $705.04K | 57,626 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −2,480 | $800.47 | $1.99M | 5,810 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −2,166 | $795.95 | $1.72M | 10,807 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 15, 2026 | Sale(10b5-1 plan) | −1,587 | $796.90 | $1.26M | 9,220 |
| John Christopher Morris EVP & CTO | Sep 15, 2026 | Sale | −15,465.5 | $772.15 | $11.94M | 31,132 |
| Gianluca Romano EVP & CFO | Sep 15, 2026 | Sale | −49,983.5 | $772.16 | $38.60M | 70,757 |
| William D. Mosley CEO, Director | Sep 14, 2026 | Option exercise | +177,000 | – | – | 475,998 |
| Ban Seng Teh EVP & Chief Commercial Officer | Sep 14, 2026 | Option exercise | +52,730 | – | – | 58,540 |
| John Christopher Morris EVP & CTO | Sep 14, 2026 | Option exercise | +30,130 | – | – | 46,598 |
| Kian Fatt Chong EVP Global Operations | Sep 14, 2026 | Option exercise | +14,470 | – | – | 25,093 |
| Gianluca Romano EVP & CFO | Sep 14, 2026 | Option exercise | +90,380 | – | – | 120,740 |
| William D. Mosley CEO, Director | Sep 14, 2026 | Sale | −1,869.75 | $781.23 | $1.46M | 298,998 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| C. Morris John Officer | Sep 21, 2026 | 14,849 | $12.75M | Sep 21, 2026 | Exercise of Stock Options |
| John Christopher Morris Officer | Sep 15, 2026 | 16,239 | $12.54M | Sep 15, 2026 | Performance Share Unit Vesting |
| William D. Mosley Officer, Director | Sep 15, 2026 | 102,784 | $79.36M | Sep 15, 2026 | Performance Share Unit Vesting |
| Gianluca Romano Officer | Sep 15, 2026 | 52,483 | $40.52M | Sep 15, 2026 | Performance Share Unit Vesting |
| Seng Teh Ban Officer | Sep 15, 2026 | 52,730 | $41.24M | Sep 15, 2026 | Performance Shares |
| John Christopher Morris Officer | Sep 14, 2026 | 518 | $404.41K | Sep 14, 2026 | Restricted Stock Unit Vesting |
| Gianluca Romano Officer | Sep 14, 2026 | 1,003 | $783.39K | Sep 14, 2026 | Restricted Stock Unit Vesting |
| William D. Mosley Officer, Director | Sep 14, 2026 | 1,963 | $1.53M | Sep 14, 2026 | Restricted Stock Unit Vesting |
| Seng Teh Ban Officer | Sep 14, 2026 | 989 | $770.43K | Sep 14, 2026 | Restricted Stock |
| Romano Gianluca Officer | Sep 11, 2026 | 50,498 | $43.55M | Sep 11, 2026 | Exercise of Stock Options |
| Seng Teh Ban Officer | Sep 10, 2026 | 663 | $570.24K | Sep 10, 2026 | Restricted Stock |
| John Christopher Morris Officer | Sep 10, 2026 | 601 | $518.02K | Sep 10, 2026 | Restricted Stock Unit Vesting |
| William D. Mosley Officer, Director | Sep 10, 2026 | 2,992 | $2.58M | Sep 10, 2026 | Restricted Stock Unit Vesting |
| Gianluca Romano Officer | Sep 10, 2026 | 1,415 | $1.22M | Sep 10, 2026 | Restricted Stock Unit Vesting |
| Conyers Yolanda Director | Sep 1, 2026 | 750 | $621.29K | Sep 1, 2026 | Restricted Stock Units |