---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-23-022334"
form_type: "8-K"
ticker: "ASTC"
cik: "0001001907"
company_name: "ASTROTECH Corp"
filed_at: "2023-08-07T23:59:59+00:00"
generated_at: "2026-06-12T03:36:23.105755+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Astrotech's auditor Armanino LLP resigns due to decision to cease serving public companies

## Summary
- Armanino LLP resigned as independent auditor effective after filing FY2023 10-K, citing a decision to stop serving public companies.
- Resignation was voluntary, not recommended by Board or Audit Committee; no disagreements or reportable events with Armanino.
- Company will initiate search for a replacement auditor, expects to complete selection in Q1 FY2024.
- Armanino's reports for FY2021 and FY2022 were unqualified, with no adverse opinions or modifications.
- Armanino provided a letter (Exhibit 16.1) agreeing with the company's disclosures in this 8-K.

## SEC filing metadata
- accession: 0001437749-23-022334
- form_type: 8-K
- ticker: ASTC
- cik: 0001001907
- company_name: ASTROTECH Corp
- filed_at: 2023-08-07T23:59:59+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/1001907/000143774923022334/0001437749-23-022334-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1001907/000143774923022334/astc20230804_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-23-022334
- JSON: https://secwatch.observer/filing/0001437749-23-022334.json
- Plain text: https://secwatch.observer/filing/0001437749-23-022334.txt

## Key facts
- Auditor Changes
  Armanino LLP resigned as auditor of ASTROTECH Corp.
  - Action: resignation
  - Auditor: Armanino LLP
  source text: On August 1, 2023, Astrotech Corporation (the “Company”) was notified by its independent registered public accounting firm, Armanino LLP (“Armanino”), of its decision to resign as the Company’s independent registered public accounting firm (the “Resignation”)
  evidence_url: https://www.sec.gov/Archives/edgar/data/1001907/000143774923022334/0001437749-23-022334-index.htm

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