---
schema_version: "secwatch.filing_event.v1"
accession: "0000105770-25-000058"
form_type: "8-K"
ticker: "WST"
cik: "0000105770"
company_name: "WEST PHARMACEUTICAL SERVICES INC"
filed_at: "2025-07-21T23:59:59+00:00"
generated_at: "2026-05-18T04:55:45.470219+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# West Pharma names Robert McMahon CFO effective Aug 4; Birkett to advise

## Summary
- McMahon to receive $800k base salary, target bonus 80% of base, LTI award of $3M on Aug 11.
- One-time cash sign-on bonus of $3.115M and replacement equity grant of $4.2M for forfeited prior comp.
- McMahon previously CFO at Agilent (2018-2025) and Hologic; 20 years at Johnson & Johnson.
- Outgoing CFO Bernard Birkett will serve as Senior Advisor to CEO through Dec 31, 2025 for transition.

## SEC filing metadata
- accession: 0000105770-25-000058
- form_type: 8-K
- ticker: WST
- cik: 0000105770
- company_name: WEST PHARMACEUTICAL SERVICES INC
- filed_at: 2025-07-21T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/105770/000010577025000058/0000105770-25-000058-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/105770/000010577025000058/wst-20250721.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000105770-25-000058
- JSON: https://secwatch.observer/filing/0000105770-25-000058.json
- Plain text: https://secwatch.observer/filing/0000105770-25-000058.txt

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