MOSLEY WILLIAM D 4

What Happened

• William D. Mosley, Chief Executive Officer and Director of Seagate Technology Holdings plc (STX), sold a total of 20,000 ordinary shares in open‑market transactions on March 2, 2026, generating approximately $7,695,262 in proceeds. Individual lots ranged from 100 to 3,500 shares at reported prices between $375.84 and $407.66 per share (line items report weighted‑average prices for multiple trades).

• These were sales (transaction code S) — routine disposition of shares rather than a purchase. The filing indicates the trades were effected pursuant to a Rule 10b5‑1 trading plan adopted by Mr. Mosley on February 20, 2025.

Key Details

• Transaction date: March 2, 2026 (Form 4 filed March 3, 2026); no late filing flagged in the provided filing.
• Shares sold: 20,000 total across multiple trades; gross proceeds ≈ $7,695,262.
• Price range reported on line items: approx. $375.84 to $407.66 per share; several line entries aggregate multiple executions and report weighted‑average prices (see footnotes F2–F20).
• Footnote F1: All transactions effected under a pre‑arranged Rule 10b5‑1 trading plan (adopted Feb 20, 2025).
• Footnotes F10–F20: Several aggregated rows represent multiple trades executed at narrow price ranges; the reporting person offers to provide full trade‑by‑trade details on request.
• Shares owned after transaction: Not disclosed in the excerpt provided — see the full Form 4 for post‑transaction ownership.

Context

• Sales executed under a 10b5‑1 plan are typically pre‑scheduled and do not, by themselves, indicate a change in the insider’s view of the company. For retail investors, purchases generally carry more informational weight than routine sales; these trades appear to be systematic dispositions under a pre‑arranged plan rather than opportunistic market timing.