STX (Seagate Technology Holdings PLC Ordinary Shares (Ireland))
Insider Trading Activity
Every open-market purchase and sale reported by STX officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-03 | Yolanda Lee Conyers | Director | Sell | — | — |
| 2026-09-03 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-08-26 | James CI Lee | EVP & CLO | MIXED | — | — |
| 2026-08-24 | John Christopher Morris | EVP & CTO | MIXED | — | — |
| 2026-08-24 | Gianluca Romano | EVP & CFO | MIXED | — | — |
| 2026-08-24 | Kian Fatt Chong | EVP Global Operations | M | — | — |
| 2026-08-24 | Ban Seng Teh | EVP & Chief Commercial Officer | MIXED | — | — |
| 2026-08-24 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-08-24 | James CI Lee | EVP & CLO | MIXED | — | — |
| 2026-08-24 | Ban Seng Teh | EVP & Chief Commercial Officer | Sell | — | — |
| 2026-08-14 | Ban Seng Teh | EVP & Chief Commercial Officer | MIXED | — | — |
| 2026-08-11 | Gianluca Romano | EVP & CFO | Sell | — | — |
| 2026-08-11 | Gianluca Romano | EVP & CFO | Sell | — | — |
| 2026-08-11 | Gianluca Romano | EVP & CFO | Sell | — | — |
| 2026-08-04 | John Christopher Morris | EVP & CTO | Sell | — | — |
| 2026-08-04 | WILLIAM D MOSLEY | CEO | Sell | — | — |
| 2026-08-04 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-08-03 | James CI Lee | EVP & CLO | Sell | — | — |
| 2026-07-24 | James CI Lee | EVP & CLO | MIXED | — | — |
| 2026-07-02 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-07-02 | WILLIAM D MOSLEY | CEO | Sell | — | — |
| 2026-06-15 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-06-15 | Ban Seng Teh | EVP & Chief Commercial Officer | MIXED | — | — |
| 2026-06-15 | Gianluca Romano | EVP & CFO | MIXED | — | — |
| 2026-06-15 | Kian Fatt Chong | EVP Global Operations | M | — | — |
| 2026-06-15 | John Christopher Morris | EVP & CTO | MIXED | — | — |
| 2026-06-11 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-06-11 | Kian Fatt Chong | EVP Global Operations | M | — | — |
| 2026-06-11 | Ban Seng Teh | EVP & Chief Commercial Officer | MIXED | — | — |
| 2026-06-11 | John Christopher Morris | EVP & CTO | MIXED | — | — |
| 2026-06-11 | Gianluca Romano | EVP & CFO | MIXED | — | — |
| 2026-06-04 | Shankar Arumugavelu | Director | Sell | — | — |
| 2026-06-02 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-06-02 | WILLIAM D MOSLEY | CEO | Sell | — | — |
| 2026-06-02 | Yolanda Lee Conyers | Director | Sell | — | — |
| 2026-06-02 | PRAT BHATT | Director | Sell | — | — |
| 2026-05-21 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-05-14 | Ban Seng Teh | EVP & Chief Commercial Officer | MIXED | — | — |
| 2026-05-08 | Gianluca Romano | EVP & CFO | Sell | — | — |
| 2026-05-08 | Gianluca Romano | EVP & CFO | Sell | — | — |
| 2026-05-06 | James CI Lee | EVP & CLO | Sell | — | — |
| 2026-05-06 | John Christopher Morris | EVP & CTO | Sell | — | — |
| 2026-05-06 | Stephanie Tilenius | Director | Sell | — | — |
| 2026-04-23 | James CI Lee | EVP & CLO | MIXED | — | — |
| 2026-04-02 | WILLIAM D MOSLEY | CEO | Sell | — | — |
| 2026-03-23 | WILLIAM D MOSLEY | CEO | Sell | — | — |
| 2026-03-16 | John Christopher Morris | EVP & CTO | Sell | — | — |
| 2026-03-12 | WILLIAM D MOSLEY | CEO | MIXED | — | — |
| 2026-03-12 | John Christopher Morris | EVP & CTO | MIXED | — | — |
| 2026-03-12 | Kian Fatt Chong | EVP Global Operations | M | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Director | 27,302,023 | — |
| — | Director | 27,300,306 | — |
| — | Director | 26,800,163 | — |
| — | Director | 17,380,812 | — |
| — | Director | 15,487,070 | — |
| — | Director | 13,737,070 | — |
| — | Director | 13,452,232 | — |
| — | 10%+ Owner | 12,539,490 | — |
| — | Director | 4,068,306 | — |
| — | CEO - See Remarks | 2,552,049 | — |
| — | Director | 1,303,040 | — |
| — | Executive VP & General Counsel | 1,023,692 | — |
| — | SVP, CTO, Research | 889,090 | — |
| — | President, Consumer Solutions | 538,331 | — |
| — | EVP Global Disc Storage Ops | 492,571 | — |
| — | Sr. VP Heads and Media | 446,957 | — |
| — | President and COO | 365,609 | — |
| — | CEO | 302,647 | — |
| — | Director | 231,788 | — |
| — | Director | 193,608 | — |
| — | EVP & Chief Financial Officer | 170,710 | — |
| — | President, Global Mkts and CSO | 150,198 | — |
| — | EVP, PLANNING & DEVELOPMT | 130,700 | — |
| — | EVP, Operations and Technology | 116,154 | — |
| — | SVP, Interim CLO | 108,433 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the STX quote page; the site-wide leaderboard is on the insider transactions hub.