---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-266758"
form_type: "8-K"
ticker: null
cik: "0001923840"
company_name: "Third Harmonic Bio, Inc."
filed_at: "2023-10-31T23:59:59+00:00"
generated_at: "2026-06-09T05:01:51.457184+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Third Harmonic Bio CFO and CSO depart; IND for THB335 on track for H1 2024

## Summary
- CFO Robert Ho resigns effective November 10, 2023; not due to any disagreement with the company.
- CSO Adrian S. Ray transitions to Scientific Advisor effective November 1, 2023, to support THB335 IND.
- Company initiated executive searches for successors for both roles.
- IND application for THB335 expected to be filed in first half of 2024.
- CEO cites strong cash position and potential strategic business development.

## SEC filing metadata
- accession: 0001193125-23-266758
- form_type: 8-K
- cik: 0001923840
- company_name: Third Harmonic Bio, Inc.
- filed_at: 2023-10-31T23:59:59+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/1923840/000119312523266758/0001193125-23-266758-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1923840/000119312523266758/d562014d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-266758
- JSON: https://secwatch.observer/filing/0001193125-23-266758.json
- Plain text: https://secwatch.observer/filing/0001193125-23-266758.txt

## Key facts
- Executive change
  Robert Ho resigned as Chief Financial Officer at Third Harmonic Bio, Inc..
  - Action: resigned
  - Role: Chief Financial Officer
  source text: received notice from Robert Ho of his intention to resign as the Company’s Chief Financial Officer, effective November 10, 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1923840/000119312523266758/0001193125-23-266758-index.htm

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