---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-315657"
form_type: "8-K"
ticker: "CDNA"
cik: "0001217234"
company_name: "CareDx, Inc."
filed_at: "2021-11-01T23:59:59+00:00"
generated_at: "2026-06-28T15:37:37.969105+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# CareDx completes leadership transition; Maag steps down as Executive Chair, Goldberg named Chair

## Summary
- Peter Maag stepped down as Executive Chair of CareDx board, effective Nov 1, 2021, and remains as non-employee director.
- Michael D. Goldberg, previously lead independent director, appointed as independent Chair of the Board (held same role 2011–2019).
- Transition completes orderly CEO succession that began with Reginald Seeto becoming CEO in November 2020.

## SEC filing metadata
- accession: 0001193125-21-315657
- form_type: 8-K
- ticker: CDNA
- cik: 0001217234
- company_name: CareDx, Inc.
- filed_at: 2021-11-01T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1217234/000119312521315657/0001193125-21-315657-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1217234/000119312521315657/d420732d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-315657
- JSON: https://secwatch.observer/filing/0001193125-21-315657.json
- Plain text: https://secwatch.observer/filing/0001193125-21-315657.txt

## Key facts
- Executive change
  Michael D. Goldberg was appointed as Chair of the Board at CareDx, Inc..
  - Action: appointed
  - Role: Chair of the Board
  source text: Effective November 1, 2021, Michael D. Goldberg, the Company’s lead independent director, was appointed as the Chair of the Board, a position he previously held from 2011 to 2019.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1217234/000119312521315657/0001193125-21-315657-index.htm
- Executive change
  Peter Maag changed role as Non-Employee Member of the Board at CareDx, Inc..
  - Action: transitioned
  - Role: Non-Employee Member of the Board
  source text: On November 1, 2021, Peter Maag, Ph.D., the Executive Chair of the Board of Directors of CareDx, Inc. (the “Company”), transitioned from his position as Executive Chair of the Board of Directors of the Company (the “Board”) to a non-employee member of the Board.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1217234/000119312521315657/0001193125-21-315657-index.htm

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