Seagate Technology
Builds high-capacity hard drives and storage systems for cloud, enterprise and consumer data.
$829.30
After-hours close−0.53 (−0.06%)
At close$829.83(−2.05%)
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Breakdown13F · Form 4
Institutions 225.49%Insiders 0.22%
A 13F quarter can total more than the shares outstanding — sub-advisers file the same block twice, and a filer's own share count can be a quarter stale. No split is drawn from it.
Shares outstanding 224.23M · Float 223.63M · 99.7% free float
Institutions13F, as of Jun 30, 2026
2,061 holders · 505.61M shares · 585 new positions · 1,201 increased · 612 reduced · 87 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| BlackRock, Inc. | 15.17M | 6.76% | +892.7K | Aug 7, 2026 |
| Vanguard Capital Management LLC | 14.63M | 6.52% | +474.4K | Aug 13, 2026 |
| State Street Corp | 9.91M | 4.42% | +590.0K | Aug 7, 2026 |
| FMR LLC | 8.15M | 3.64% | −23.8K | Aug 13, 2026 |
| Vanguard Portfolio Management LLC | 8.00M | 3.57% | −3.10M | Aug 13, 2026 |
| Invesco Ltd. | 7.54M | 3.36% | +2.96M | Aug 14, 2026 |
| WCM Investment Management, LLC | 5.32M | 2.37% | +973.6K | Aug 13, 2026 |
| JPMorgan Chase & Co | 5.20M | 2.32% | −1.46M | Aug 12, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| Vanguard Capital Management | 7.48% | 16.32M | 13G | Apr 30, 2026 ↗ |
| BlackRock, Inc. | 6.10% | 12.95M | 13G | Apr 23, 2025 ↗ |
| Sanders Capital, LLC | 5.98% | 13.04M | 13G | Apr 16, 2026 ↗ |
| Vanguard Portfolio Management | 5.08% | 11.09M | 13G | Apr 29, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| William D. Mosley | director, officer: CEO | 311.2K | 0.14% | Aug 24, 2026 |
| Richard L. Clemmer | director | 29.7K | 0.01% | Oct 21, 2025 |
| Gianluca Romano | officer: EVP & CFO | 28.5K | 0.01% | Aug 24, 2026 |
| Judy Bruner | director | 18.6K | 0.01% | Oct 21, 2025 |
| John Christopher Morris | officer: EVP & CTO | 15.5K | 0.01% | Aug 24, 2026 |
| Dylan G. Haggart | director | 14.5K | 0.01% | Oct 21, 2025 |
| Michael R. Cannon | director | 13.4K | 0.01% | Oct 21, 2025 |
| Prat Bhatt | director | 12.9K | 0.01% | Jun 2, 2026 |
| Stephanie Tilenius | director | 10.7K | 0.00% | May 6, 2026 |
| Kian Fatt Chong | officer: EVP Global Operations | 9.4K | 0.00% | Aug 24, 2026 |
3 ten-percent owners hold 20.55M shares by Form 4, outside the officers-and-directors figure above · 41 people have not refiled in the last 18 months (16.24M shares), so they are not in the figure above
Latest trades
| Date | Insider | Type | Shares | Avg price | Owned after |
|---|---|---|---|---|---|
| Aug 24, 2026 | James CI Leeofficer: EVP & CLO | Sale · 29 lots | 9,013 | $794.84 | 347 |
| Aug 21, 2026 | William D. Mosleydirector, officer: CEO | Sale · 3 lots | 18,139 | $849.35 | 298,483 |
| Aug 21, 2026 | Gianluca Romanoofficer: EVP & CFO | Sale · 3 lots | 9,076 | $849.35 | 22,997 |
| Aug 21, 2026 | James CI Leeofficer: EVP & CLO | Sale · 3 lots | 3,939 | $849.35 | 1,191 |
| Aug 20, 2026 | John Christopher Morrisofficer: EVP & CTO | Sale | 523 | $835.54 | 15,460 |
| Aug 21, 2026 | John Christopher Morrisofficer: EVP & CTO | Sale · 3 lots | 3,516 | $849.35 | 12,805 |
| Aug 20, 2026 | Ban Seng Tehofficer: EVP & Chief Commercial Officer | Sale · 19 lots | 6,048 | $842.97 | 15,072 |
| Aug 21, 2026 | Ban Seng Tehofficer: EVP & Chief Commercial Officer | Sale · 27 lots | 9,862 | $852.97 | 5,210 |
| Aug 13, 2026 | Ban Seng Tehofficer: EVP & Chief Commercial Officer | Sale · 2 lots | 7,361 | $920.80 | 2,931 |
| Aug 7, 2026 | Gianluca Romanoofficer: EVP & CFO | Sale · 65 lots | 22,211 | $802.94 | 20,663 |
CongressHouse and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Sen. Alan Armstrong | Purchase | $1,001 – $15,000 | Joint | Mar 27, 2026 | Jul 21, 2026 ↗ |
| Rep. Ro Khanna · CA17 | Purchase | $1,001 – $15,000 | Spouse | Apr 13, 2026 | May 13, 2026 ↗ |