---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-282814"
form_type: "8-K"
ticker: "TSPH"
cik: "0001823593"
company_name: "TuSimple Holdings Inc."
filed_at: "2022-11-10T23:59:59+00:00"
generated_at: "2026-06-21T23:38:51.137210+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# TuSImple board overhaul: CEO replaced, four directors ousted, Nasdaq non-compliance triggered

## Summary
- Majority stockholders removed directors Brad Buss, Karen C. Francis, Michelle Sterling, Reed Werner on Nov 10, 2022.
- Dr. Xiaodi Hou became sole director; then appointed Mo Chen (Executive Chairman) and Cheng Lu (CEO).
- Interim CEO Ersin Yumer removed; Cheng Lu appointed CEO effective immediately.
- Board lost majority independence, violating Nasdaq rules 5605(b)(1), (c)(2)(A), (d)(2); company intends to cure.
- All prior board committees vacated; no new assignments made yet.

## SEC filing metadata
- accession: 0001193125-22-282814
- form_type: 8-K
- ticker: TSPH
- cik: 0001823593
- company_name: TuSimple Holdings Inc.
- filed_at: 2022-11-10T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 3.01, 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/d387238d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-282814
- JSON: https://secwatch.observer/filing/0001193125-22-282814.json
- Plain text: https://secwatch.observer/filing/0001193125-22-282814.txt

## Key facts
- Executive change
  Michelle Sterling was removed as Director at TuSimple Holdings Inc..
  - Action: removed
  - Role: Director
  source text: consented to the removal of Brad Buss, Karen C. Francis, Michelle Sterling and Reed Werner from the Company’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm
- Executive change
  Ersin Yumer was removed as interim Chief Executive Officer and President at TuSimple Holdings Inc..
  - Action: removed
  - Role: interim Chief Executive Officer and President
  source text: removed Ersin Yumer as interim Chief Executive Officer and President of the Company
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm
- Executive change
  Karen C. Francis was removed as Director at TuSimple Holdings Inc..
  - Action: removed
  - Role: Director
  source text: consented to the removal of Brad Buss, Karen C. Francis, Michelle Sterling and Reed Werner from the Company’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm
- Executive change
  Brad Buss was removed as Director at TuSimple Holdings Inc..
  - Action: removed
  - Role: Director
  source text: consented to the removal of Brad Buss, Karen C. Francis, Michelle Sterling and Reed Werner from the Company’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm
- Executive change
  Mo Chen was appointed as Executive Chairman at TuSimple Holdings Inc..
  - Action: appointed
  - Role: Executive Chairman
  source text: appointed Mo Chen, as Executive Chairman of the Company’s board of directors
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm
- Executive change
  Reed Werner was removed as Director at TuSimple Holdings Inc..
  - Action: removed
  - Role: Director
  source text: consented to the removal of Brad Buss, Karen C. Francis, Michelle Sterling and Reed Werner from the Company’s board of directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm
- Executive change
  Cheng Lu was appointed as Chief Executive Officer at TuSimple Holdings Inc..
  - Action: appointed
  - Role: Chief Executive Officer
  source text: appointed Cheng Lu as Chief Executive Officer of the Company
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522282814/0001193125-22-282814-index.htm

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