---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-069185"
form_type: "8-K"
ticker: "TSPH"
cik: "0001823593"
company_name: "TuSimple Holdings Inc."
filed_at: "2023-03-13T23:59:59+00:00"
generated_at: "2026-06-18T04:47:44.966308+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# TuSimple director Xiaodi Hou resigns amid internal investigation into employee poaching claims

## Summary
- Dr. Xiaodi Hou resigned from TuSimple's board effective March 9, 2023.
- Resignation occurred during an internal investigation into claims Hou approached employees to join a new venture.
- No successor has been named to fill the board vacancy.
- The investigation's outcome or status is not disclosed.

## SEC filing metadata
- accession: 0001193125-23-069185
- form_type: 8-K
- ticker: TSPH
- cik: 0001823593
- company_name: TuSimple Holdings Inc.
- filed_at: 2023-03-13T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1823593/000119312523069185/0001193125-23-069185-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1823593/000119312523069185/d458483d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-069185
- JSON: https://secwatch.observer/filing/0001193125-23-069185.json
- Plain text: https://secwatch.observer/filing/0001193125-23-069185.txt

## Key facts
- Executive change
  Xiaodi Hou resigned as director at TuSimple Holdings Inc..
  - Action: resigned
  - Role: director
  source text: On March 9, 2023, Dr. Xiaodi Hou notified TuSimple Holdings Inc. (the “Company”) that he was resigning from the Company’s board of directors, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312523069185/0001193125-23-069185-index.htm

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