---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-001873"
form_type: "8-K"
ticker: "CBU"
cik: "0000723188"
company_name: "COMMUNITY FINANCIAL SYSTEM, INC."
filed_at: "2024-01-05T23:59:59+00:00"
generated_at: "2026-06-07T03:37:50.363656+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# CEO Mark Tryniski retires; Dimitar Karaivanov becomes President and CEO effective Jan 1, 2024

## Summary
- Mark Tryniski retired as President and CEO on Dec 31, 2023, consistent with previously announced succession plan.
- Dimitar Karaivanov, formerly EVP and COO, appointed President and CEO effective Jan 1, 2024.
- Karaivanov was also appointed to the Company's and Bank's Board of Directors effective Jan 1, 2024.
- Karaivanov joined Community Bank System in June 2021 as EVP of Financial Services & Corporate Development.

## SEC filing metadata
- accession: 0001104659-24-001873
- form_type: 8-K
- ticker: CBU
- cik: 0000723188
- company_name: COMMUNITY FINANCIAL SYSTEM, INC.
- filed_at: 2024-01-05T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/723188/000110465924001873/0001104659-24-001873-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/723188/000110465924001873/tm242082d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-001873
- JSON: https://secwatch.observer/filing/0001104659-24-001873.json
- Plain text: https://secwatch.observer/filing/0001104659-24-001873.txt

## Key facts
- Executive change
  Dimitar A. Karaivanov was appointed as President and Chief Executive Officer at COMMUNITY FINANCIAL SYSTEM, INC..
  - Action: appointed
  - Role: President and Chief Executive Officer
  source text: On January 1, 2024, Dimitar A. Karaivanov, the Company’s Executive Vice President and Chief Operating Officer (“COO”), was appointed as the Company’s and the Bank’s President and Chief Executive Officer.
  evidence_url: https://www.sec.gov/Archives/edgar/data/723188/000110465924001873/0001104659-24-001873-index.htm
- Executive change
  Dimitar A. Karaivanov was appointed as Director at COMMUNITY FINANCIAL SYSTEM, INC..
  - Action: appointed
  - Role: Director
  source text: As previously announced, Mr. Karaivanov was appointed to serve as a Director of the Company and the Bank, effective January 1, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/723188/000110465924001873/0001104659-24-001873-index.htm
- Executive change
  Mark E. Tryniski retired as President and Chief Executive Officer at COMMUNITY FINANCIAL SYSTEM, INC..
  - Action: retired
  - Role: President and Chief Executive Officer
  source text: Consistent with the previously announced succession plan, on December 31, 2023, Mark E. Tryniski, the President and Chief Executive Officer of Community Bank System, Inc. (the “Company”) and its wholly-owned subsidiary, Community Bank, N.A. (the “Bank”) retired as an executive officer of the Company and the Bank.
  evidence_url: https://www.sec.gov/Archives/edgar/data/723188/000110465924001873/0001104659-24-001873-index.htm

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