SEC Form 4 · accession 0001137789-26-000239
Seagate Technology Holdings plc · STX
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
William D Mosley
Officer — CEO · Director
Period of report
Sep 11, 2026
Accepted (ET)
Sep 15, 2026 · 4:15 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001137789
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Ordinary Shares | Sep 11, 2026 | M | 3,319 | $0.00 | A | 300,867 | D | |
| Ordinary SharesF1 | Sep 14, 2026 | S | 1,870 | $781.2254 | D | 298,998 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Restricted Share UnitF2 | $0.00 | Sep 11, 2026 | M | 3,319 | D | — | — | Ordinary Shares | 3,319 | 13,276 | D |
Explanation of responses
- F1Represents sales made pursuant to Issuer mandated sell-to-cover solely to satisfy tax withholding obligations.
- F2Consists of a grant of restricted share unit awarded to the reporting person under the Seagate Technology Holdings plc 2022 Equity Incentive Plan. One-quarter of the shares vested on September 11, 2024 and the remaining portion shall vest in equal quarterly installments over the following three years for a total vesting period of four years.