---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-015445"
form_type: "8-K"
ticker: "TCBX"
cik: "0001781730"
company_name: "Third Coast Bancshares, Inc."
filed_at: "2026-01-16T23:59:59+00:00"
generated_at: "2026-05-16T09:55:51.509061+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Third Coast supplements proxy with projections for Keystone merger; denies shareholder claims

## Summary
- Received four demand letters alleging proxy omissions; denies violations but provides supplemental disclosures.
- Third Coast standalone projected net income: $59.8M (2025) to $86.3M (2030); assets $5.1B to $7.6B.
- Keystone standalone projected net income: $9.9M (2025) to $14.5M (2030); assets $1.0B to $1.5B.
- Pro forma: 1.9% dilution to TBVPS, but 5.2% EPS accretion in 2027 and 5.3% in 2028.
- Merger consideration and special meeting dates (Jan 23/29, 2026) unchanged.

## SEC filing metadata
- accession: 0001193125-26-015445
- form_type: 8-K
- ticker: TCBX
- cik: 0001781730
- company_name: Third Coast Bancshares, Inc.
- filed_at: 2026-01-16T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1781730/000119312526015445/0001193125-26-015445-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1781730/000119312526015445/d215168d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-015445
- JSON: https://secwatch.observer/filing/0001193125-26-015445.json
- Plain text: https://secwatch.observer/filing/0001193125-26-015445.txt

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