---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-020916"
form_type: "8-K"
ticker: "ETON"
cik: "0001710340"
company_name: "Eton Pharmaceuticals, Inc."
filed_at: "2025-06-20T23:59:59+00:00"
generated_at: "2026-05-19T01:34:27.755982+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Eton Pharmaceuticals dismisses auditor Crowe, appoints Grant Thornton

## Summary
- Effective June 13, 2025, Eton dismissed Crowe LLP as its independent auditor.
- No disagreements or reportable events occurred during Crowe's tenure (fiscal year 2024).
- Audit Committee appointed Grant Thornton LLP as new auditor for fiscal year 2025.
- Crowe's audit report for FY 2024 was unqualified; no adverse opinions or modifications.
- Company provided Crowe with disclosures; Crowe's letter filed as Exhibit 16.1.

## SEC filing metadata
- accession: 0001437749-25-020916
- form_type: 8-K
- ticker: ETON
- cik: 0001710340
- company_name: Eton Pharmaceuticals, Inc.
- filed_at: 2025-06-20T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1710340/000143774925020916/0001437749-25-020916-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1710340/000143774925020916/eton20250613_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-020916
- JSON: https://secwatch.observer/filing/0001437749-25-020916.json
- Plain text: https://secwatch.observer/filing/0001437749-25-020916.txt

## Key facts
- Auditor Changes
  Eton Pharmaceuticals, Inc. engaged Grant Thornton LLP as its auditor.
  - Action: engagement
  - Auditor: Grant Thornton LLP
  source text: On June 13, 2025, the Audit Committee approved the appointment of Grant Thornton LLP ("Grant Thornton") as the Company’s new independent registered public accounting firm for the Company's fiscal year ended December 31, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1710340/000143774925020916/0001437749-25-020916-index.htm
- Auditor Changes
  Eton Pharmaceuticals, Inc. dismissed Crowe LLP as its auditor.
  - Action: dismissal
  - Auditor: Crowe LLP
  - Successor: Grant Thornton LLP
  source text: On June 13, 2025, the Company dismissed Crowe LLP as the Company’s independent registered public accounting firm, effective June 13, 2025.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1710340/000143774925020916/0001437749-25-020916-index.htm

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