---
schema_version: "secwatch.filing_event.v1"
accession: "0001110803-23-000046"
form_type: "8-K"
ticker: "ILMN"
cik: "0001110803"
company_name: "ILLUMINA, INC."
filed_at: "2023-06-07T23:59:59+00:00"
generated_at: "2026-06-14T05:37:46.335470+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Illumina expands board to 11, names Hologic CEO as Chair and Edwards CFO to Audit Committee

## Summary
- Board elected Stephen P. MacMillan (Hologic CEO) as non-executive Chair and Scott B. Ullem (Edwards CFO) to Audit Committee effective June 1, 2023.
- Board size increased from 9 to 11 members to accommodate the appointments.
- Sue Siegel appointed Chair of Compensation Committee, replacing Gary Guthart.
- MacMillan and Ullem each bring over 30 years of healthcare and finance experience.
- Both new directors will stand for election at the 2024 annual meeting.

## SEC filing metadata
- accession: 0001110803-23-000046
- form_type: 8-K
- ticker: ILMN
- cik: 0001110803
- company_name: ILLUMINA, INC.
- filed_at: 2023-06-07T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1110803/000111080323000046/0001110803-23-000046-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1110803/000111080323000046/ilmn-20230601.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001110803-23-000046
- JSON: https://secwatch.observer/filing/0001110803-23-000046.json
- Plain text: https://secwatch.observer/filing/0001110803-23-000046.txt

## Key facts
- Executive change
  Scott B. Ullem was elected as Director at ILLUMINA, INC..
  - Action: elected
  - Role: Director
  source text: elected Stephen P. MacMillan and Scott B. Ullem to serve on the Board beginning June 1, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1110803/000111080323000046/0001110803-23-000046-index.htm
- Executive change
  Stephen P. MacMillan was elected as non-executive Chair of the Board at ILLUMINA, INC..
  - Action: elected
  - Role: non-executive Chair of the Board
  source text: Mr. MacMillan will serve as non-executive Chair of the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1110803/000111080323000046/0001110803-23-000046-index.htm

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