---
schema_version: "secwatch.filing_event.v1"
accession: "0001534969-23-000053"
form_type: "8-K"
ticker: "SERA"
cik: "0001534969"
company_name: "SERA PROGNOSTICS, INC."
filed_at: "2023-05-16T23:59:59+00:00"
generated_at: "2026-06-14T23:38:59.836550+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Sera Prognostics CEO Greg Critchfield to retire June 8; Zhenya Lindgardt named interim CEO

## Summary
- CEO Gregory Critchfield retires after 12 years, effective June 8, 2023; remains on board.
- Board member Zhenya Lindgardt appointed Interim CEO; Kim Kamdar named Board Chair.
- Critchfield led company from inception through PreTRM test launch; Lindgardt has experience at Uber and BCG.

## SEC filing metadata
- accession: 0001534969-23-000053
- form_type: 8-K
- ticker: SERA
- cik: 0001534969
- company_name: SERA PROGNOSTICS, INC.
- filed_at: 2023-05-16T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1534969/000153496923000053/0001534969-23-000053-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1534969/000153496923000053/sera-20230514.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001534969-23-000053
- JSON: https://secwatch.observer/filing/0001534969-23-000053.json
- Plain text: https://secwatch.observer/filing/0001534969-23-000053.txt

## Key facts
- Executive change
  Gregory C. Critchfield departed as President and Chief Executive Officer at SERA PROGNOSTICS, INC..
  - Action: retire
  - Role: President and Chief Executive Officer
  source text: On May 14, 2023, Gregory C. Critchfield, M.D., M. S. notified Sera Prognostics, Inc. (the “ Company ”) of his intention to retire from the position of President and Chief Executive Officer of the Company and Chairman of the Board of Directors (the “ Board ”), effective as of June 8, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1534969/000153496923000053/0001534969-23-000053-index.htm
- Executive change
  Kim Kamdar was appointed as Chairperson of the Board at SERA PROGNOSTICS, INC..
  - Action: appointed
  - Role: Chairperson of the Board
  source text: Kim Kamdar, Ph.D., a member of the Board, has been appointed as Chairperson of the Board, effective as of the Retirement Date.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1534969/000153496923000053/0001534969-23-000053-index.htm
- Executive change
  Zhenya Lindgardt was appointed as Interim Chief Executive Officer at SERA PROGNOSTICS, INC..
  - Action: appointed
  - Role: Interim Chief Executive Officer
  source text: Concurrently with Dr. Critchfield’s retirement, Zhenya Lindgardt, a member of the Board, was appointed as the Interim Chief Executive Officer of the Company, effective June 8, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1534969/000153496923000053/0001534969-23-000053-index.htm

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