Ownership & Insider Lab
Seagate Technology Holdings plc (STX)
Nasdaq · SEC CIK 0001137789
This is the supported SEC-traceable subset, not total insider ownership or personal wealth. Values reflect the current disclosed positions Grizzly Bulls can resolve and value. Latest source filing: Sep 16, 2026 · values through Sep 25, 2026.
Covered reporting owners
Filter the reporting-owner snapshot by holder, role, or security. Position values are shown only where the current reviewed data supports them.
| Holder | Role | Position | Current value | Latest filing |
|---|---|---|---|---|
| William D. Mosley | CEO · Director | 378,108.25 sharesOrdinary Shares, par value $0.00001 per share | $346.63M | Sep 16, 2026 |
| Gianluca Romano | EVP & CFO | 70,756.5 sharesOrdinary Shares, par value $0.00001 per share | $64.87M | Sep 16, 2026 |
| John Christopher Morris | EVP & CTO | 31,132.25 sharesOrdinary Shares, par value $0.00001 per share | $28.54M | Sep 16, 2026 |
| Kian Fatt Chong | EVP Global Operations | 25,093 sharesOrdinary Shares, par value $0.00001 per share | $23M | Sep 16, 2026 |
| Ban Seng Teh | EVP & Chief Commercial Officer | 5,810 sharesOrdinary Shares, par value $0.00001 per share | $5.33M | Sep 16, 2026 |
| James Ci Lee | EVP & CLO | 347 sharesOrdinary Shares, par value $0.00001 per share | $318.11K | Aug 26, 2026 |
Recent supported insider transactions
These are supported direct, non-derivative historical transactions from companies where recent transaction history has passed separate review. Reported price is shown when present. The lab does not calculate gross proceeds and does not treat historical transactions as current wealth.
| Date | Holder | Action | Security | Units | Reported price | Filing |
|---|---|---|---|---|---|---|
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 40 shares | $902.07 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 40 shares | $899.53 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 80 shares | $897.28 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 915 shares | $894.27 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 40 shares | $893.15 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 40 shares | $890.54 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 120 shares | $887.9167 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 40 shares | $886.27 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 320 shares | $883.0775 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 200 shares | $881.902 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 741 shares | $881.1584 | 4 |
| Sep 21, 2026 | John Christopher Morris | SaleSEC code S | Ordinary Shares, par value $0.00001 per share | 200 shares | $879.712 | 4 |
Published 12 of 50 source candidates under the current reviewed security-resolution rules.
Covered securities
| Security | Instrument family | Covered positions | Covered value |
|---|---|---|---|
| Ordinary Shares, par value $0.00001 per share | ordinary-share | 6 | $468.69M |
Coverage and interpretation
Current holdings: direct positions that the reviewed ownership data can trace to an exact reporting owner, legal security, and current-basis quantity.
Current value: the existing published company-position valuation. This lab does not recalculate security values or infer missing positions.
Transactions: historical flow observations only. They are not used to reconstruct current ownership and are shown only for companies where recent transaction history is currently published.
Not included here: a claim of total insider ownership, total personal wealth, institutional 13F ownership, or an investment recommendation.