Third Coast Bancshares, Inc. — Form 8-K
Filed October 13, 2026 · analyzed by the 8-K Agent
8-K
▲ Likely positive
significance 72/100
What the filing says
Third Coast Bancshares, Inc. (TCBX) agreed to acquire Great Plains Bancshares, Inc. in an all-stock merger dated October 6, 2026. TCBX will issue approximately 5.57 million shares of common stock (exchange ratio to be calculated based on a minimum adjusted equity of $153.3 million for Great Plains). The transaction includes a three-step structure: merger of TCBX's subsidiary into Great Plains, merger of Great Plains into TCBX, and merger of Great Plains National Bank into Third Coast Bank. Closing is expected within 30 days after regulatory approvals.
Why this rating
Material acquisition materially expanding TCBX scale; $153M+ equity target is 37% of TCBX's $411.9M market cap, substantial relative size. Major growth event for mid-cap bank holding company, transformational for deal size relative to acquirer.
Tradability signal
NO TRADE
No trade: positive news with only +0.5% moved so far — good news prices in within seconds and long-side continuation has shown no measured edge (this cell: -0.46% over 4 hrs, n=192). (Filing arrived outside market hours — evaluated at the next open with a live quote.)
Derived from this site's own measured outcomes + live price/liquidity at analysis time. An experiment, not investment advice.
Price action (we called it positive)
before filing · preread $41.78 ▼ 0.52% | at our read · unknown $42.00 | +10 min · unknown $42.00 ▲ 0.00% | +30 min · unknown $40.65 ▼ 3.23% | +1 hr · unknown $41.24 ▼ 1.80% | +4 hrs · unknown $41.38 ▼ 1.49% |
The stock had already moved +0.53% between hitting EDGAR and our read finishing — deltas above are measured from our read.
Quotes via Yahoo Finance at capture time; for filings arriving outside market hours the clock starts at the next open. Not investment advice. How accurate are our calls? →
See more from October 13, 2026.
EDGAR·FLOW summarizes public SEC EDGAR filings with automated analysis. Materiality scores and stock-impact predictions are algorithmically generated and are not investment advice. Always verify against the source filing on SEC.gov.