---
schema_version: "secwatch.filing_event.v1"
accession: "0000947871-23-000303"
form_type: "8-K"
ticker: "DTM"
cik: "0001842022"
company_name: "DT Midstream, Inc."
filed_at: "2023-03-08T23:59:59+00:00"
generated_at: "2026-06-18T08:48:48.441467+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# DT Midstream appoints Angela Archon to Board; Wright Lassiter resigns as Lead Director

## Summary
- Wright Lassiter III resigned as director and Lead Independent Director effective March 7, 2023; no disagreement with the company.
- Angela Archon appointed as Class III Director, effective March 7, 2023; will chair Corporate Governance Committee.
- Stephen Baker appointed as Lead Independent Director, effective March 7, 2023, succeeding Lassiter.
- Archon brings 30+ years at IBM and public board experience (Spirax-Sarco, Switch, H&R Block).

## SEC filing metadata
- accession: 0000947871-23-000303
- form_type: 8-K
- ticker: DTM
- cik: 0001842022
- company_name: DT Midstream, Inc.
- filed_at: 2023-03-08T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1842022/000094787123000303/0000947871-23-000303-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1842022/000094787123000303/ss1839638_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000947871-23-000303
- JSON: https://secwatch.observer/filing/0000947871-23-000303.json
- Plain text: https://secwatch.observer/filing/0000947871-23-000303.txt

## Key facts
- Executive change
  Angela Archon was appointed as Class III Director at DT Midstream, Inc..
  - Action: appointed
  - Role: Class III Director
  source text: On March 7, 2023, the Board appointed Angela Archon as a director of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1842022/000094787123000303/0000947871-23-000303-index.htm
- Executive change
  Wright Lassiter III resigned as Director and Lead Independent Director at DT Midstream, Inc..
  - Action: resigned
  - Role: Director and Lead Independent Director
  source text: On March 7, 2023, Wright Lassiter III, a member of the board of directors (the “Board”) of DT Midstream, Inc. (the “Company”), Chair of the Corporate Governance Committee of the Board, member of the Organization and Compensation Committee of the Board, member of the Environmental, Social and Governance Committee of the Board and the Company’s Lead Independent Director, notified the Company of his intention to resign, effective March 7, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1842022/000094787123000303/0000947871-23-000303-index.htm
- Executive change
  Stephen Baker was appointed as Lead Independent Director at DT Midstream, Inc..
  - Action: appointed
  - Role: Lead Independent Director
  source text: Following Mr. Lassiter’s resignation, the Company’s independent directors appointed Stephen Baker as the Company’s Lead Independent Director, effective March 7, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1842022/000094787123000303/0000947871-23-000303-index.htm

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