---
schema_version: "secwatch.filing_event.v1"
accession: "0001564590-21-040208"
form_type: "8-K"
ticker: "ASMB"
cik: "0001426800"
company_name: "ASSEMBLY BIOSCIENCES, INC."
filed_at: "2021-08-03T23:59:59+00:00"
generated_at: "2026-06-29T23:15:22.053001+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Assembly Biosciences promotes Okazaki to COO and Samar to CFO effective August 1

## Summary
- Jason Okazaki promoted to COO, retains Chief Legal and Business Officer roles; base salary $540,000, target bonus 55%.
- Michael Samar, previously acting principal financial officer, named CFO with base salary $400,000 and target bonus 40%.
- Both promotions effective August 1, 2021; employment agreements include change-in-control severance provisions.
- Okazaki and Samar were already serving as executive officers; no new director appointments or departures.

## SEC filing metadata
- accession: 0001564590-21-040208
- form_type: 8-K
- ticker: ASMB
- cik: 0001426800
- company_name: ASSEMBLY BIOSCIENCES, INC.
- filed_at: 2021-08-03T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1426800/000156459021040208/0001564590-21-040208-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1426800/000156459021040208/asmb-8k_20210730.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001564590-21-040208
- JSON: https://secwatch.observer/filing/0001564590-21-040208.json
- Plain text: https://secwatch.observer/filing/0001564590-21-040208.txt

## Key facts
- Executive change
  Michael P. Samar changed role as Chief Financial Officer at ASSEMBLY BIOSCIENCES, INC..
  - Action: promoted
  - Role: Chief Financial Officer
  source text: Michael P. Samar, 49, has been promoted to the position of Chief Financial Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1426800/000156459021040208/0001564590-21-040208-index.htm
- Executive change
  Jason A. Okazaki changed role as Chief Operating Officer at ASSEMBLY BIOSCIENCES, INC..
  - Action: promoted
  - Role: Chief Operating Officer
  source text: Jason A. Okazaki, 45, has been promoted to the position of Chief Operating Officer
  evidence_url: https://www.sec.gov/Archives/edgar/data/1426800/000156459021040208/0001564590-21-040208-index.htm

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