---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-083356"
form_type: "8-K"
ticker: "MNOV"
cik: "0001226616"
company_name: "MEDICINOVA INC"
filed_at: "2024-04-01T23:59:59+00:00"
generated_at: "2026-06-04T04:22:56.159007+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# MediciNova VP Geoffrey O'Brien resigns as employee, to stay as consultant

## Summary
- Geoffrey O'Brien, VP, retires from full-time employment effective April 2, 2024.
- Resignation is voluntary, no disagreement with the Company.
- O'Brien will continue as VP on a consulting basis; consulting agreement to be formalized.

## SEC filing metadata
- accession: 0001193125-24-083356
- form_type: 8-K
- ticker: MNOV
- cik: 0001226616
- company_name: MEDICINOVA INC
- filed_at: 2024-04-01T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1226616/000119312524083356/0001193125-24-083356-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1226616/000119312524083356/d818300d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-083356
- JSON: https://secwatch.observer/filing/0001193125-24-083356.json
- Plain text: https://secwatch.observer/filing/0001193125-24-083356.txt

## Key facts
- Executive change
  Geoffrey O'Brien resigned as Vice President at MEDICINOVA INC.
  - Action: resigned
  - Role: Vice President
  source text: On March 26, 2024, Geoffrey O’Brien informed MediciNova, Inc. (the “Company”) of his decision to retire from full-time employment and resign from his employment with the Company, effective as of April 2, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1226616/000119312524083356/0001193125-24-083356-index.htm

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