---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-064783"
form_type: "8-K"
ticker: "CDNA"
cik: "0001217234"
company_name: "CareDx, Inc."
filed_at: "2024-03-11T23:59:59+00:00"
generated_at: "2026-06-04T23:41:26.198570+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# CareDx appoints Bryan Riggsbee to board as Audit Committee chair, effective March 11

## Summary
- Riggsbee previously CFO of Myriad Genetics (2014–2024) and held senior finance roles at LabCorp and GE.
- He will serve as Chair of the Audit and Finance Committee, succeeding George Bickerstaff who remains on the committee.
- Annual cash retainer of $45,000 for Board service plus $20,000 for Audit Committee chair, both payable quarterly.
- Initial equity grants of $200,000 fair value (options and RSUs) contingent on stockholder approval of new equity plan.
- No family relationships or related party transactions; standard indemnification agreement entered.

## SEC filing metadata
- accession: 0001193125-24-064783
- form_type: 8-K
- ticker: CDNA
- cik: 0001217234
- company_name: CareDx, Inc.
- filed_at: 2024-03-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1217234/000119312524064783/0001193125-24-064783-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1217234/000119312524064783/d745015d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-064783
- JSON: https://secwatch.observer/filing/0001193125-24-064783.json
- Plain text: https://secwatch.observer/filing/0001193125-24-064783.txt

## Key facts
- Executive change
  R. Bryan Riggsbee was appointed as Director at CareDx, Inc..
  - Action: appointed
  - Role: Director
  source text: On March 9, 2024, the board of directors (the “Board”) of CareDx, Inc. (the “Company”) appointed R. Bryan Riggsbee as a Class II director of the Company, effective March 11, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1217234/000119312524064783/0001193125-24-064783-index.htm

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