---
schema_version: "secwatch.filing_event.v1"
accession: "0001101302-24-000057"
form_type: "8-K"
ticker: "ENTG"
cik: "0001101302"
company_name: "ENTEGRIS INC"
filed_at: "2024-09-05T23:59:59+00:00"
generated_at: "2026-05-31T06:11:08.179054+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Entegris appoints Mary Puma, former Axcelis CEO, to board of directors

## Summary
- Mary Puma appointed as independent director effective September 5, 2024.
- Puma previously served as president and CEO of Axcelis Technologies.
- Board expands to eight members with this appointment.
- Puma receives prorated award of 1,207 RSUs and prorated $105,000 annual retainer.

## SEC filing metadata
- accession: 0001101302-24-000057
- form_type: 8-K
- ticker: ENTG
- cik: 0001101302
- company_name: ENTEGRIS INC
- filed_at: 2024-09-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1101302/000110130224000057/0001101302-24-000057-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1101302/000110130224000057/entg-20240905.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001101302-24-000057
- JSON: https://secwatch.observer/filing/0001101302-24-000057.json
- Plain text: https://secwatch.observer/filing/0001101302-24-000057.txt

## Key facts
- Executive change
  Mary Puma was appointed as director at ENTEGRIS INC.
  - Action: appointed
  - Role: director
  source text: Effective September 5, 2024 , the Board of Directors (the "Board") of Entegris, Inc. ("Entegris") appointed Mary Puma as a director of Entegris.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1101302/000110130224000057/0001101302-24-000057-index.htm

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