---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-26-011727"
form_type: "8-K/A"
ticker: "AVTR"
cik: "0001722482"
company_name: "Avantor, Inc."
filed_at: "2026-02-25T23:59:59+00:00"
generated_at: "2026-05-16T00:22:19.976915+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Avantor appoints Simon Dingemans to Audit & Finance Committee

## Summary
- Simon Dingemans elected to Avantor board effective January 2, 2026.
- Appointed to Audit & Finance Committee effective February 19, 2026.
- Committee assignment fills omitted detail from original December 17, 2025 filing.

## SEC filing metadata
- accession: 0001628280-26-011727
- form_type: 8-K/A
- ticker: AVTR
- cik: 0001722482
- company_name: Avantor, Inc.
- filed_at: 2026-02-25T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1722482/000162828026011727/0001628280-26-011727-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1722482/000162828026011727/avtr-20251217.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-26-011727
- JSON: https://secwatch.observer/filing/0001628280-26-011727.json
- Plain text: https://secwatch.observer/filing/0001628280-26-011727.txt

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