---
schema_version: "secwatch.filing_event.v1"
accession: "0001137789-25-000145"
form_type: "8-K"
ticker: "STX"
cik: "0001137789"
company_name: "Seagate Technology Holdings plc"
filed_at: "2025-07-28T23:59:59+00:00"
generated_at: "2026-05-18T00:08:04.033186+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Seagate CEO Dave Mosley to become Chairman after 2025 AGM; Cannon to Lead Independent Director

## Summary
- Effective at conclusion of 2025 AGM, CEO Dr. Dave Mosley succeeds Michael R. Cannon as Chairman.
- Michael R. Cannon becomes Lead Independent Director, subject to election and independence qualification.
- Mosley has been CEO since October 2017 and a director since July 2017.
- Cannon served as Chairman since July 2020 and as director since February 2011.

## SEC filing metadata
- accession: 0001137789-25-000145
- form_type: 8-K
- ticker: STX
- cik: 0001137789
- company_name: Seagate Technology Holdings plc
- filed_at: 2025-07-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1137789/000113778925000145/0001137789-25-000145-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1137789/000113778925000145/stx-20250728.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001137789-25-000145
- JSON: https://secwatch.observer/filing/0001137789-25-000145.json
- Plain text: https://secwatch.observer/filing/0001137789-25-000145.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.