---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-000016"
form_type: "8-K"
ticker: "CBSH"
cik: "0000022356"
company_name: "COMMERCE BANCSHARES INC /MO/"
filed_at: "2026-01-02T23:59:59+00:00"
generated_at: "2026-05-16T11:51:43.443679+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Commerce Bancshares completes FineMark acquisition; issued ~9.9M shares valued at $528.5M

## Summary
- Post-merger: $36B total assets, $90B assets under administration; ranks 15th among bank-managed trust companies.
- Issued ~9.9M shares of CBSH common stock with aggregate value of ~$528.5M based on Dec. 23, 2025 closing price.
- Expands private banking and wealth management into Arizona and South Carolina, adding to existing Florida presence.
- Joseph Catti named Chairman of Commerce Trust and will continue leading the FineMark Bank & Trust division.
- Operational systems conversion planned for second half of 2026.

## SEC filing metadata
- accession: 0001104659-26-000016
- form_type: 8-K
- ticker: CBSH
- cik: 0000022356
- company_name: COMMERCE BANCSHARES INC /MO/
- filed_at: 2026-01-02T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.01, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/22356/000110465926000016/0001104659-26-000016-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/22356/000110465926000016/tm2534427d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-000016
- JSON: https://secwatch.observer/filing/0001104659-26-000016.json
- Plain text: https://secwatch.observer/filing/0001104659-26-000016.txt

## Source-grounded claims
- claim_id: 2e4809f9077b2a0ff649031b25ea7e1e802c18a6
  claim: COMMERCE BANCSHARES INC /MO/ completed an acquisition involving FineMark Holdings, Inc. for All-stock acquisition; each share of FineMark common stock converted into 0.7245 shares of Commerce common stock (adjusted for stock dividend), with cash in lie (closed 2026-01-01).
  evidence_excerpt: the Certificate of Designation of the FineMark Preferred Stock) (other than certain excluded shares as described in the Merger Agreement) was converted into the right to receive 0.7245 of a share (as adjusted in accordance with the Merger Agreement for a stock dividend paid by Commerce to Commerce shareholders of record as of December 2, 2025, as previously
  evidence_url: https://www.sec.gov/Archives/edgar/data/22356/000110465926000016/0001104659-26-000016-index.htm

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