---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-26-027517"
form_type: "8-K"
ticker: "REFR"
cik: "0000793524"
company_name: "RESEARCH FRONTIERS INC"
filed_at: "2026-06-05T21:00:16+00:00"
generated_at: "2026-06-05T21:10:08.546268+00:00"
event_type: "regulatory"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Research Frontiers faces Nasdaq delisting over bid price and market value

## Summary
- First deficiency: common stock closing bid price below $1.00 for 30 consecutive days ending June 1, 2026.
- Second deficiency: Market Value of Listed Securities (MVLS) below $35M for 30 consecutive days ending June 1, 2026.
- Company has 180 calendar days (until November 30, 2026) to regain compliance for both requirements.
- To regain bid price compliance: closing bid must be at least $1.00 for at least 10 consecutive business days.
- Company currently does not intend to effect a reverse stock split to regain compliance, but will monitor options.

## SEC filing metadata
- accession: 0001493152-26-027517
- form_type: 8-K
- ticker: REFR
- cik: 0000793524
- company_name: RESEARCH FRONTIERS INC
- filed_at: 2026-06-05T21:00:16+00:00
- event_type: regulatory
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 3.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/793524/000149315226027517/0001493152-26-027517-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/793524/000149315226027517/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-26-027517
- JSON: https://secwatch.observer/filing/0001493152-26-027517.json
- Plain text: https://secwatch.observer/filing/0001493152-26-027517.txt

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