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425 ·Filed Oct 7, 2026

TCBX

Third Coast Bancshares, Inc.
BULLISH
Impact 6/10
Horizonmonths Processed20d ago SEC0001193125-26-416164
Rule 425 M&A communications
Actionable Insight ▲ Bullish

Watch for the S-4 registration statement and joint proxy filing for detailed financial projections and shareholder vote timeline. The deal's accretion profile and manageable dilution support a positive read-through for TCBX, but integration risk and regulatory approval timing remain key variables.

DirectionBullish
Confidencehigh
Horizonmonths
Latest settled — T+5d ⚠ clustered
TCBX ▼ -0.17% at T+5d
LONG call ✗ call lost -0.17% · α vs SPY +0.81% · entry $41.27 → $41.20
Next anchor: T+20d in 8d
Latest observation: T+12 -10.74% FF3 residual α
Entry = T+0 close
Oct 7, 2026
via day close
T+1d
+1.21%
call +1.21% · α +1.63%
$41.77
settled 19d ago
T+5d
-0.17%
call -0.17% · α +0.81%
$41.20
settled 13d ago
T+20d
Pending
in 8d
T+60d
Pending
in 2mo

Price Chart

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Executive Summary

Third Coast Bancshares (TCBX) announced a definitive merger agreement to acquire Great Plains Bancshares in an all-stock transaction valued at approximately $239.6 million. The combined company is expected to have approximately $9 billion in assets, expanding TCBX's North Texas presence and entering the Oklahoma market. The deal is expected to close in Q1 2027, subject to regulatory and shareholder approvals.

Key Financial Metrics

Deal Value
$239.6M
Deal Type
merger

Key Facts

  • All-stock transaction valued at approximately $239.6 million based on TCBX's closing stock price as of October 6, 2026
  • Third Coast to issue 5,570,352 shares of common stock; pro forma ownership ~78% TCBX / 22% Great Plains
  • Combined pro forma assets expected to exceed $9 billion
  • Great Plains reported ~$1.9 billion in total assets, ~$1.7 billion in gross loans, and ~$1.7 billion in total deposits as of June 30, 2026
  • Expected to close in Q1 2027, subject to regulatory approvals and shareholder votes
  • Cost savings of $17.1 million estimated (20% of Great Plains' 2027E non-interest expense), phased in at 50% in 2027
  • ~14% EPS accretion in 2028, ~(5%) TBV dilution, 2.5-year earnback period
  • 2028 EPS accretion ~14%, 2027E ROAA ~1.3%, 2027E ROATCE ~15%
  • Price / tangible book value: 1.56x; Price / LTM EPS: 9.3x; Core deposit premium: 7.7%
  • Great Plains CEO Mark Russell to retain senior role; two Great Plains board representatives to be appointed

Financial Impact

All-stock deal valued at ~$239.6M; ~14% EPS accretion by 2028; ~(5%) TBV dilution with 2.5-year earnback; 25%+ IRR

epstangible book valueassetsloansdepositsefficiency ratio

Risk Factors

  • Regulatory approval may impose conditions or be delayed
  • Integration risk: combining two banks with different systems and cultures
  • Shareholder approval required from both companies; potential dissent
  • Dilution from stock issuance (~5% TBV dilution) and convertible preferred conversion
  • Estimated one-time transaction expenses of ~$21.0 million after-tax

Investment Themes

Traditional Finance

Documents Analyzed

This report is based on 4 SEC documents filed with EDGAR.

DocumentAccession Number
425 Filing (Primary)0001193125-26-416164
Document: 0001193125-26-416164-index-headers.html0001193125-26-416164
Document: 0001193125-26-416164-index.html0001193125-26-416164
Document: 0001193125-26-416164.txt0001193125-26-416164
16 reports for TCBX
Performance horizon
100% Hit rate @ T+1 6 of 6 directional calls Went positive at some point 6 of 6 best @ T+20▲ +6.84%Jul 22, 2026
Filters
Rows
Reports for TCBX — sortable, filterable
TypeNow
Oct 23, 2026
3d ago
425
NEUTRAL ★ 5/10
$39.80awaiting T+1—$40.12 (+0.80%)
Oct 21, 2026
5d ago
425
BEARISH ★ 6/10
$40.00 $39.80▲ +0.50%▼ −0.02%$40.12 (−0.30%)
Oct 21, 2026
5d ago
8-K
MIXED ★ 6/10
$40.00 $39.80▼ −0.50%▲ +0.02%$40.12 (+0.30%)
Oct 13, 2026
13d ago
425
BULLISH ★ 6/10
$41.20 $41.40▲ +0.49%▲ +0.20%$40.12 (−2.62%)
Oct 13, 2026
13d ago
8-K
BULLISH ★ 6/10
$41.20 $41.40▲ +0.49%▲ +0.20%$40.12 (−2.62%)
Oct 9, 2026
17d ago
425
NEUTRAL ★ 4/10
$41.70 $41.78▲ +0.19%▲ +0.20%$40.12 (−3.79%)
Oct 9, 2026
17d ago
425
NEUTRAL ★ 4/10
$41.70 $41.78▲ +0.19%▲ +0.20%$40.12 (−3.79%)
Oct 7, 2026
20d ago
425
BULLISH ★ 6/10
$41.27 $41.77▲ +1.21%▲ +1.63%$40.12 (−2.79%)
Oct 7, 2026
20d ago
8-K
BULLISH ★ 6/10
$41.27 $41.77▲ +1.21%▲ +1.63%$40.12 (−2.79%)
Sep 18, 2026
5w ago
8-K
NEUTRAL ★ 2/10
$44.05 $43.56▼ −1.11%▼ −1.10%$40.12 (−8.92%)
Showing 10 of 16

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Report published Oct 7, 2026