---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-197201"
form_type: "8-K"
ticker: "PCAR"
cik: "0000075362"
company_name: "PACCAR INC"
filed_at: "2025-09-05T23:59:59+00:00"
generated_at: "2026-05-17T08:09:49.594379+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# PACCAR EVP Darrin Siver to retire; Rich and Bloch expand roles effective Jan 5, 2026

## Summary
- Darrin C. Siver, Executive Vice President, retiring after 32 years; effective January 5, 2026.
- John N. Rich (CTO) to assume additional leadership of Peterbilt Motors Company starting January 5, 2026.
- Laura J. Bloch (SVP) adds Corporate Quality and Purchasing to Kenworth Truck and PACCAR Parts responsibilities.

## SEC filing metadata
- accession: 0001193125-25-197201
- form_type: 8-K
- ticker: PCAR
- cik: 0000075362
- company_name: PACCAR INC
- filed_at: 2025-09-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02, 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/75362/000119312525197201/0001193125-25-197201-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/75362/000119312525197201/d127237d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-197201
- JSON: https://secwatch.observer/filing/0001193125-25-197201.json
- Plain text: https://secwatch.observer/filing/0001193125-25-197201.txt

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