---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-25-005181"
form_type: "8-K"
ticker: null
cik: "0001811623"
company_name: "PaxMedica, Inc."
filed_at: "2025-02-06T23:59:59+00:00"
generated_at: "2026-05-27T01:45:50.146152+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# PaxMedica CFO/COO Stephen Sheldon resigns; director Zachary Rome also quits board

## Summary
- Stephen D. Sheldon resigned as CFO and COO effective Jan 31, 2025, with a consulting agreement for transition support.
- Sheldon's departure was not due to any dispute with PaxMedica or its board.
- Zachary Rome resigned from the board for personal reasons, effective immediately, without any dispute.
- CEO Howard Weisman will assume Sheldon's duties during the transition period.

## SEC filing metadata
- accession: 0001493152-25-005181
- form_type: 8-K
- cik: 0001811623
- company_name: PaxMedica, Inc.
- filed_at: 2025-02-06T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1811623/000149315225005181/0001493152-25-005181-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1811623/000149315225005181/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-25-005181
- JSON: https://secwatch.observer/filing/0001493152-25-005181.json
- Plain text: https://secwatch.observer/filing/0001493152-25-005181.txt

## Key facts
- Executive change
  Zachary Rome resigned as Director at PaxMedica, Inc..
  - Action: resigned
  - Role: Director
  source text: On January 31, 2025, Zachary Rome resigned from the Board for personal reasons, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1811623/000149315225005181/0001493152-25-005181-index.htm
- Executive change
  Stephen D. Sheldon resigned as Chief Financial Officer and Chief Operational Officer at PaxMedica, Inc..
  - Action: resigned
  - Role: Chief Financial Officer and Chief Operational Officer
  source text: On January 31, 2025, Stephen D. Sheldon, chief financial officer and chief operational officer of PaxMedica, Inc., a Delaware corporation (the “Company”), provided notice of his resignation as an executive officer of the Company, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1811623/000149315225005181/0001493152-25-005181-index.htm

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