---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-032815"
form_type: "8-K"
ticker: "ISTR"
cik: "0001602658"
company_name: "Investar Holding Corp"
filed_at: "2025-11-03T23:59:59+00:00"
generated_at: "2026-05-17T00:53:04.123033+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Investar Holding Corp replaces auditor Horne LLP with BDO USA P.C. effective Nov 1, 2025

## Summary
- Horne LLP resigned as independent auditor on Nov 1, 2025; BDO USA P.C. appointed on Nov 3, 2025 with Audit Committee approval.
- No adverse opinions, disagreements, or reportable events in FY2024, FY2023, or through Oct 31, 2025.
- No prior consultations with BDO on accounting principles or audit scope before engagement.

## SEC filing metadata
- accession: 0001437749-25-032815
- form_type: 8-K
- ticker: ISTR
- cik: 0001602658
- company_name: Investar Holding Corp
- filed_at: 2025-11-03T23:59:59+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/1602658/000143774925032815/0001437749-25-032815-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1602658/000143774925032815/istr20251028_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-032815
- JSON: https://secwatch.observer/filing/0001437749-25-032815.json
- Plain text: https://secwatch.observer/filing/0001437749-25-032815.txt

## Source-grounded claims
- claim_id: 1419ccbf0a0df41f17219f20cd13920f84e83eb3
  claim: HORNE LLP resigned as auditor of Investar Holding Corp.
  evidence_excerpt: ☐ Item 4.01 Changes in Registrant's Certifying Accountant On November 1, 2025, the partners and professional staff of HORNE LLP (“Horne”), which was engaged as the independent registered public accounting firm of the registrant, Investar Holding Corporation (the “Company”), joined BDO USA, P.C. (“BDO”). As a result of this transaction, Horne resigned as the Company’s independent registered public accounting firm on November 1, 2025. On November 3, 2025, following the resignation of Horne, the Company, through and with the approval of its Audit Committee, appointed BDO as its independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1602658/000143774925032815/0001437749-25-032815-index.htm
- claim_id: 2afa260a8a23b4d1c7e47d2464608c2449bb9c05
  claim: Investar Holding Corp engaged BDO USA, P.C. as its auditor.
  evidence_excerpt: On November 3, 2025, following the resignation of Horne, the Company, through and with the approval of its Audit Committee, appointed BDO as its independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1602658/000143774925032815/0001437749-25-032815-index.htm

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