---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-240553"
form_type: "8-K"
ticker: "VCNX"
cik: "0001205922"
company_name: "VACCINEX, INC."
filed_at: "2023-09-22T23:59:59+00:00"
generated_at: "2026-06-10T09:33:38.572410+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Vaccinex implements 1-for-15 reverse stock split effective Sept 25, 2023

## Summary
- Reverse stock split at 1-for-15 ratio, effective 5:00 p.m. ET on September 25, 2023.
- Objective to regain compliance with Nasdaq $1.00 minimum bid price by October 9, 2023.
- Stock to trade on Nasdaq under symbol VCNX on split-adjusted basis from September 26, 2023.
- Fractional shares resulting from the split will be rounded up to the nearest whole share.
- No change to authorized shares or par value; CUSIP changes to 918640202.

## SEC filing metadata
- accession: 0001193125-23-240553
- form_type: 8-K
- ticker: VCNX
- cik: 0001205922
- company_name: VACCINEX, INC.
- filed_at: 2023-09-22T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 3.03, 5.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1205922/000119312523240553/0001193125-23-240553-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1205922/000119312523240553/d505692d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-240553
- JSON: https://secwatch.observer/filing/0001193125-23-240553.json
- Plain text: https://secwatch.observer/filing/0001193125-23-240553.txt

## Key facts
- Governance Changes
  VACCINEX, INC.: Filing of Certificate of Amendment to effect a 1-for-15 reverse stock split (effective 2023-09-25).
  - Change: charter amendment
  - Effective: 2023-09-25
  source text: On September 22, 2023, Vaccinex, Inc. (the “Company”) filed a Certificate of Amendment (the “Amendment”) to the Company’s Amended and Restated Certificate of Incorporation, with the Delaware Secretary of State to implement a reverse stock split of the Company’s issued shares of common stock at a ratio of 1-for-15, effective at 5:00 p.m. Eastern Time on September 25, 2023 (the “Reverse Stock Split”), previously approved by the Company’s Board of Directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1205922/000119312523240553/0001193125-23-240553-index.htm

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