---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-25-051159"
form_type: "8-K"
ticker: "AVTR"
cik: "0001722482"
company_name: "Avantor, Inc."
filed_at: "2025-11-10T23:59:59+00:00"
generated_at: "2026-05-16T22:29:29.610540+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Avantor appoints Mary Blenn as EVP and COO; Blenn to lead manufacturing and supply chain

## Summary
- Mary Blenn appointed EVP and COO effective Nov 10, 2025, reporting to CEO Emmanuel Ligner.
- Blenn brings 30+ years experience; most recently SVP Global Operations at Cytiva; prior GE Healthcare.
- Compensation: base salary $500k, target bonus 75%, initial equity grant $5M split into 2025/2026 awards.
- Filing amends CEO Ligner's education to Licence/Maitrise from Université de Savoie; Lucier appointed to Compensation & HR and Nominating & Governance committees.

## SEC filing metadata
- accession: 0001628280-25-051159
- form_type: 8-K
- ticker: AVTR
- cik: 0001722482
- company_name: Avantor, Inc.
- filed_at: 2025-11-10T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1722482/000162828025051159/0001628280-25-051159-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1722482/000162828025051159/avtr-20251026.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-25-051159
- JSON: https://secwatch.observer/filing/0001628280-25-051159.json
- Plain text: https://secwatch.observer/filing/0001628280-25-051159.txt

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