---
schema_version: "secwatch.filing_event.v1"
accession: "0001071739-22-000077"
form_type: "8-K"
ticker: "CNC"
cik: "0001071739"
company_name: "CENTENE CORP"
filed_at: "2022-02-24T23:59:59+00:00"
generated_at: "2026-06-27T04:33:55.329491+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# CEO Michael Neidorff takes medical leave; James Dallas named Acting Chairman

## Summary
- Michael Neidorff granted paid medical leave of absence as CEO, Chairman, and director effective Feb 23, 2022.
- James Dallas appointed Acting Chairman; Office of Chairman (London, Layton, Asher, Bagley) to manage daily operations.
- Board's CEO succession process ongoing, targeted for completion in Q2 2022.
- Neidorff led Centene for 26 years, growing it to Fortune 24 with over $125B revenue.

## SEC filing metadata
- accession: 0001071739-22-000077
- form_type: 8-K
- ticker: CNC
- cik: 0001071739
- company_name: CENTENE CORP
- filed_at: 2022-02-24T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1071739/000107173922000077/0001071739-22-000077-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1071739/000107173922000077/cnc-20220223.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001071739-22-000077
- JSON: https://secwatch.observer/filing/0001071739-22-000077.json
- Plain text: https://secwatch.observer/filing/0001071739-22-000077.txt

## Key facts
- Executive change
  James Dallas was appointed as Acting Chairman at CENTENE CORP.
  - Action: appointed as Acting Chairman
  - Role: Acting Chairman
  source text: The Board also (i) appointed James Dallas as the Acting Chairman of the Board
  evidence_url: https://www.sec.gov/Archives/edgar/data/1071739/000107173922000077/0001071739-22-000077-index.htm
- Executive change
  Michael Neidorff changed role as Chief Executive Officer, Chairman, and Director at CENTENE CORP.
  - Action: granted medical leave of absence
  - Role: Chief Executive Officer, Chairman, and Director
  source text: On February 23, 2022, the Board of Directors (the “Board”) of Centene Corporation (the “Company”) approved a request from Michael Neidorff for a paid medical leave of absence from his roles as Chief Executive Officer, Chairman, and a director of the Company (the “Leave of Absence”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1071739/000107173922000077/0001071739-22-000077-index.htm

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