---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-22-286181"
form_type: "8-K"
ticker: "TSPH"
cik: "0001823593"
company_name: "TuSimple Holdings Inc."
filed_at: "2022-11-16T23:59:59+00:00"
generated_at: "2026-06-21T17:40:31.168117+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Mo Chen gains control of TuSimple with ~59% voting power; interim CEO removed, four directors ousted

## Summary
- Mo Chen received irrevocable proxy and voting agreement from White Marble entities, now controls ~59% voting power.
- Ersin Yumer removed as interim CEO; separation agreement provides $340,800 lump sum, COBRA, and equity vesting.
- Four directors—Brad Buss, Karen Francis, Michelle Sterling, Reed Werner—removed via stockholder written consent.
- Company qualifies as 'controlled company' under Nasdaq, may elect exemptions from independent director requirements.

## SEC filing metadata
- accession: 0001193125-22-286181
- form_type: 8-K
- ticker: TSPH
- cik: 0001823593
- company_name: TuSimple Holdings Inc.
- filed_at: 2022-11-16T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 5.01, 5.02, 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1823593/000119312522286181/0001193125-22-286181-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1823593/000119312522286181/d401344d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-22-286181
- JSON: https://secwatch.observer/filing/0001193125-22-286181.json
- Plain text: https://secwatch.observer/filing/0001193125-22-286181.txt

## Key facts
- 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: the Company’s board of directors on November 10, 2022 removed Ersin Yumer as interim Chief Executive Officer and President of the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522286181/0001193125-22-286181-index.htm
- M&A Transactions
  TuSimple Holdings Inc. underwent a change of control involving Mr. Mo Chen for no monetary consideration (closed 2022-11-09).
  - Action: change of control
  - Counterparty: Mr. Mo Chen
  - Consideration: no monetary consideration
  - Closing: 2022-11-09
  source text: As a result, under the SEC's rules with respect to the beneficial ownership of securities, Mr. Chen acquired control of the Company as of November 9, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000119312522286181/0001193125-22-286181-index.htm

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