---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-014571"
form_type: "8-K"
ticker: "DYAI"
cik: "0001213809"
company_name: "DYADIC INTERNATIONAL INC"
filed_at: "2025-05-05T23:59:59+00:00"
generated_at: "2026-05-22T16:38:27.175854+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "medium"
source: SEC EDGAR
---

# Dyadic amends convertible notes; redemption date moved to Dec 1, 2026

## Summary
- Second Amendment to Senior Secured Convertible Promissory Notes due March 8, 2027 entered with majority holders.
- Redemption date changed to December 1, 2026, earlier than original maturity.
- Amendment executed on May 1, 2025; full terms in Exhibit 4.1.
- No other financial or operational changes disclosed.

## SEC filing metadata
- accession: 0001437749-25-014571
- form_type: 8-K
- ticker: DYAI
- cik: 0001213809
- company_name: DYADIC INTERNATIONAL INC
- filed_at: 2025-05-05T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: medium
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1213809/000143774925014571/0001437749-25-014571-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1213809/000143774925014571/dyai20250504_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-014571
- JSON: https://secwatch.observer/filing/0001437749-25-014571.json
- Plain text: https://secwatch.observer/filing/0001437749-25-014571.txt

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