---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-23-004182"
form_type: "8-K"
ticker: "DYAI"
cik: "0001213809"
company_name: "DYADIC INTERNATIONAL INC"
filed_at: "2023-02-22T23:59:59+00:00"
generated_at: "2026-06-19T04:15:40.348476+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Dyadic International's auditor Mayer Hoffman McCann resigns effective upon filing of 2022 10-K

## Summary
- MHM resigned as independent auditor effective upon filing of 2022 Form 10-K, citing resource constraints.
- No disagreements or reportable events during fiscal years 2020-2021 and subsequent interim period.
- Company is in process of identifying a successor independent registered public accounting firm.
- MHM provided a letter to SEC agreeing with the company's statements.

## SEC filing metadata
- accession: 0001437749-23-004182
- form_type: 8-K
- ticker: DYAI
- cik: 0001213809
- company_name: DYADIC INTERNATIONAL INC
- filed_at: 2023-02-22T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1213809/000143774923004182/0001437749-23-004182-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1213809/000143774923004182/dyai20230220_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-23-004182
- JSON: https://secwatch.observer/filing/0001437749-23-004182.json
- Plain text: https://secwatch.observer/filing/0001437749-23-004182.txt

## Key facts
- Auditor Changes
  Mayer Hoffman McCann P.C. resigned as auditor of DYADIC INTERNATIONAL INC.
  - Action: resignation
  - Auditor: Mayer Hoffman McCann P.C.
  source text: On February 16, 2023, Mayer Hoffman McCann P.C. (“MHM”), the independent registered public accounting firm to Dyadic International, Inc. (the “registrant”), informed the registrant of its decision to resign from this role effective upon the filing of the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2022 (the “2022 Form 10-K”). MHM stated that it is resigning due to its own resource constraints. Neither the registrant’s audit committee nor its board of directors took part in MHM’s decision to resign.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1213809/000143774923004182/0001437749-23-004182-index.htm

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