---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-087931"
form_type: "8-K"
ticker: "BY"
cik: "0001702750"
company_name: "BYLINE BANCORP, INC."
filed_at: "2025-06-18T23:59:59+00:00"
generated_at: "2026-05-19T03:08:36.351836+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.15
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Byline Bancorp appoints Baker Tilly as auditor after Moss Adams merger

## Summary
- Moss Adams merged with Baker Tilly effective June 3, 2025; Moss Adams resigned as auditor.
- Audit committee appointed Baker Tilly as successor independent registered public accounting firm.
- No disagreements or reportable events occurred during 2024, 2023, or through June 16, 2025.
- Prior audit reports on 2024 and 2023 financial statements were unqualified and contained no adverse opinions.

## SEC filing metadata
- accession: 0000950170-25-087931
- form_type: 8-K
- ticker: BY
- cik: 0001702750
- company_name: BYLINE BANCORP, INC.
- filed_at: 2025-06-18T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.15
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 4.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1702750/000095017025087931/0000950170-25-087931-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1702750/000095017025087931/by-20250616.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-087931
- JSON: https://secwatch.observer/filing/0000950170-25-087931.json
- Plain text: https://secwatch.observer/filing/0000950170-25-087931.txt

## Key facts
- Auditor Changes
  Moss Adams LLP resigned as auditor of BYLINE BANCORP, INC..
  - Action: resignation
  - Auditor: Moss Adams LLP
  - Successor: Baker Tilly US, LLP
  source text: In connection with the notification of the merger, Moss Adams has resigned as the auditors of the Company and the Audit Committee of the Company's Board of Directors approved the appointment of Baker Tilly, as the successor to Moss Adams, as the Company's independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1702750/000095017025087931/0000950170-25-087931-index.htm
- Auditor Changes
  BYLINE BANCORP, INC. engaged Baker Tilly US, LLP as its auditor.
  - Action: engagement
  - Auditor: Baker Tilly US, LLP
  source text: the Audit Committee of the Company's Board of Directors approved the appointment of Baker Tilly, as the successor to Moss Adams, as the Company's independent registered public accounting firm.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1702750/000095017025087931/0000950170-25-087931-index.htm

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