---
schema_version: "secwatch.filing_event.v1"
accession: "0000950170-25-034609"
form_type: "8-K"
ticker: "FISI"
cik: "0000862831"
company_name: "FINANCIAL INSTITUTIONS INC"
filed_at: "2025-03-06T23:59:59+00:00"
generated_at: "2026-05-25T08:22:29.991518+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Financial Institutions, Inc. Appoints Eric Marks as Chief Consumer Banking Officer of Five Star Bank

## Summary
- Eric W. Marks named Senior Vice President and Chief Consumer Banking Officer of Five Star Bank.
- Oversees Retail Banking, Residential Mortgage, Small Business Banking, Customer Contact Center, and Collections.
- Reports to President & CEO Martin K. Birmingham and joins Executive Management Committee.
- Previously spent 19 years at M&T Bank, most recently as Retail Segment CFO.
- Five Star Bank has over $6B in assets and 49 branches across Western and Central New York.

## SEC filing metadata
- accession: 0000950170-25-034609
- form_type: 8-K
- ticker: FISI
- cik: 0000862831
- company_name: FINANCIAL INSTITUTIONS INC
- filed_at: 2025-03-06T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/862831/000095017025034609/0000950170-25-034609-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/862831/000095017025034609/fisi-20250306.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000950170-25-034609
- JSON: https://secwatch.observer/filing/0000950170-25-034609.json
- Plain text: https://secwatch.observer/filing/0000950170-25-034609.txt

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