---
schema_version: "secwatch.filing_event.v1"
accession: "0001628280-22-011194"
form_type: "8-K"
ticker: "TSPH"
cik: "0001823593"
company_name: "TuSimple Holdings Inc."
filed_at: "2022-04-28T23:59:59+00:00"
generated_at: "2026-06-26T03:34:55.425110+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# TuSimple appoints Reed Werner to board, Gov Security Committee; Mo Chen not seeking re-election

## Summary
- Reed Werner appointed to Board effective April 23, 2022, serving as Security Director under Feb 2022 NSA and chair of new Government Security Committee.
- Brad Buss appointed Lead Independent Director per Corporate Governance Guidelines.
- Mo Chen will not stand for re-election at 2022 annual meeting; no disagreement with company operations.
- Non-Employee Director Compensation Policy amended: annual cash retainers $50k base; committee chairs $10k-$32.5k; Lead Independent Director $20k.
- Werner receives $250k cash payment (pro-rated) instead of equity award; other non-employee directors get $250k RSU annual grant vesting over one year.

## SEC filing metadata
- accession: 0001628280-22-011194
- form_type: 8-K
- ticker: TSPH
- cik: 0001823593
- company_name: TuSimple Holdings Inc.
- filed_at: 2022-04-28T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1823593/000162828022011194/0001628280-22-011194-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1823593/000162828022011194/tsp-20220423.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001628280-22-011194
- JSON: https://secwatch.observer/filing/0001628280-22-011194.json
- Plain text: https://secwatch.observer/filing/0001628280-22-011194.txt

## Key facts
- Executive change
  Mo Chen departed as Director at TuSimple Holdings Inc..
  - Action: decided not to stand for re-election
  - Role: Director
  source text: In addition, on April 27, 2022, Mo Chen decided not to stand for re-election as a director at the Company’s next annual meeting of stockholders.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000162828022011194/0001628280-22-011194-index.htm
- Executive change
  Reed Werner was appointed as Director at TuSimple Holdings Inc..
  - Action: appointed
  - Role: Director
  source text: On April 23, 2022, the board of directors (the “Board”) of TuSimple Holdings Inc. (the “Company”), appointed Reed Werner to fill the vacancy on the Board, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000162828022011194/0001628280-22-011194-index.htm
- Executive change
  Brad Buss was appointed as Lead Independent Director at TuSimple Holdings Inc..
  - Action: appointed
  - Role: Lead Independent Director
  source text: Additionally, on April 23, 2022, Brad Buss was appointed to serve as the Company’s Lead Independent Director pursuant to the Company’s Corporate Governance Guidelines.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1823593/000162828022011194/0001628280-22-011194-index.htm

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