---
schema_version: "secwatch.filing_event.v1"
accession: "0001724521-25-000005"
form_type: "8-K"
ticker: "RCUS"
cik: "0001724521"
company_name: "Arcus Biosciences, Inc."
filed_at: "2025-01-21T23:59:59+00:00"
generated_at: "2026-05-27T22:15:34.415302+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Arcus appoints Richard Markus as CMO; Dimitry Nuyten departs Jan 31, 2025

## Summary
- Richard Markus, M.D., Ph.D., named Chief Medical Officer, effective January 31, 2025.
- Dimitry Nuyten, M.D., Ph.D., will depart from Arcus on the same date.
- Dr. Nuyten eligible for lump-sum severance of 12 months base salary, 12 months COBRA, and 2024 bonus.
- Separation agreement details described; final agreement to be filed after execution.

## SEC filing metadata
- accession: 0001724521-25-000005
- form_type: 8-K
- ticker: RCUS
- cik: 0001724521
- company_name: Arcus Biosciences, Inc.
- filed_at: 2025-01-21T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1724521/000172452125000005/0001724521-25-000005-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1724521/000172452125000005/rcus-20250116.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001724521-25-000005
- JSON: https://secwatch.observer/filing/0001724521-25-000005.json
- Plain text: https://secwatch.observer/filing/0001724521-25-000005.txt

## Key facts
- Executive change
  Richard Markus was appointed as Chief Medical Officer at Arcus Biosciences, Inc..
  - Action: appointed
  - Role: Chief Medical Officer
  source text: Richard Markus, M.D., Ph.D. has been appointed as the Company’s Chief Medical Officer, effective January 31, 2025
  evidence_url: https://www.sec.gov/Archives/edgar/data/1724521/000172452125000005/0001724521-25-000005-index.htm
- Executive change
  Dimitry Nuyten departed as Chief Medical Officer at Arcus Biosciences, Inc..
  - Action: departed
  - Role: Chief Medical Officer
  source text: Dimitry Nuyten, M.D., Ph.D. will depart from the Company on January 31, 2025
  evidence_url: https://www.sec.gov/Archives/edgar/data/1724521/000172452125000005/0001724521-25-000005-index.htm

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