COSO

ANALYST NOTE: COSO (CoastalSouth Bancshares, Inc.) Date: 2026-06-13 Current Price: $26.48

1. Structural Readiness

Conservative Entry: Not yet defined (awaiting breakout confirmation) Aggressive/Pre-Breakout Entry: N/A (Structure is in place, but price has not fired the breakout signal) Breakout Level: Pending Extension: N/A (Price is not currently extending from a confirmed breakout) ATR Context: Current ATR is 2.1% (Sub-threshold). This indicates low volatility relative to the historical "sweet spot" (4–6%).

2. Thesis Layer

Thesis Classification: Tactical / Setup-Led Secular Exposure: None Assessment: As of 2026-06-13, there is no named secular thesis driving this name. This is a tactical, setup-led opportunity. The investment case must be judged strictly on the quality of the structural setup (the forming coil) and the underlying business fundamentals. There is no macro narrative (e.g., "regional banking re-rating" or "interest rate tailwind") explicitly attached to this specific setup at this date. The conviction must derive entirely from the alignment of the company's operational execution and the technical structure.

3. Business Overview

Company: CoastalSouth Bancshares, Inc. (COSO) Industry: Financial Services / Regional Banking Business Model: COSO operates as a full-service commercial bank holding company. Its primary business model focuses on a relationship-oriented approach to serving small-to-medium-sized businesses (SMBs) and individuals in specific geographic markets.

Operational Footprint & Strategy:

• Geography: The company operates 11 retail banking branches across three primary markets: the Lowcountry of South Carolina, Savannah, Georgia, and metro Atlanta, Georgia (Evidence E6).
• Growth Strategy: Growth has been achieved primarily through de novo branch openings in vibrant markets and two prior acquisitions (Evidence E10).
• Lending Portfolio: The bank engages in a full complement of lending activities, including:
• Commercial Real Estate (CRE) and Income Producing CRE loans (Evidence E1, E4).
• Construction, Development, and Acquisition (ADC) loans for residential and commercial developments (Evidence E3).
• Commercial and Industrial (C&I) loans (Evidence E1).
• Consumer purpose loans (Evidence E1).
• Specialty Lines: The bank operates four distinct specialty lines: Senior Housing, Marine Lending, Government Guaranteed Lending, and Mortgage Banker Finance (MBF) (Evidence E7).
• Mortgage Operations: It owns a wholly owned subsidiary, Coastal States Mortgage, Inc., which originates and sells residential mortgages to investors while retaining some in the portfolio (Evidence E2).
• Deposit Base: As of December 31, 2025, the bank held $1.99 billion in total deposits, with 84.6% ($1.68 billion) classified as core deposits, indicating a stable funding base (Evidence E9, E11).

Financial Position (as of Dec 31, 2025):

• Total Assets: $2.31 billion (Evidence E9).
• Loans Held-for-Investment (LHFI): $1.62 billion (Evidence E9).
• Shareholders' Equity: $259.5 million (Evidence E9).

4. Archetype and Conviction Stack

Archetype: Deep Value Recovery Rationale: The name fits the "Deep Value Recovery" archetype based on its post-IPO trajectory and fundamental positioning.

• IPO Context: The company completed its IPO in July 2025 as an emerging growth company (Evidence E12). As of mid-2026, it is in the early post-IPO stabilization phase.
• Valuation & Fundamentals: The financial spine indicates a forward consensus EPS of $2.32 for FY1 and $2.655 for FY2 (Evidence E17). With a current price of $26.48, the stock trades at approximately 11.4x forward FY1 earnings. This valuation, combined with the "Deep Value" archetype, suggests the market may be pricing in a recovery or stabilization narrative following the IPO volatility, rather than pricing in hyper-growth.
• Conviction Stack:
• Thesis Strength: Low (Tactical only, no macro tailwinds).
• Evidence Quality: High. The evidence base is robust, citing specific filings from March and May 2026 with clear financial figures and operational details.
• Setup Readiness: Partial. The structure is in place, but the breakout has not fired.
• Rerating Potential: Dependent on the successful execution of the "replicable growth model" management expects (Evidence E8) and the ability to expand margins in the current rate environment.

5. Invalidations, Strengths, and Gaps

What Would Strengthen the Case:

• Breakout Confirmation: A daily close above the defined breakout level (once established) with volume expansion.
• Volatility Expansion: An increase in ATR from the current 2.1% toward the 4–6% historical sweet spot, indicating the market is pricing in the setup.
• Fundamental Acceleration: Management guidance indicating faster loan growth or margin expansion than the current consensus (EPS $2.32/$2.655).

What Would Invalidate the Case:

• Earnings Miss: A significant miss on the forward consensus EPS or a downgrade in guidance that contradicts the "sustainable, profitable growth" narrative (Evidence E8).

Gaps in Evidence Base:

• Recent Quarterly Performance: While 2025 year-end data is available, specific Q1 2026 or Q2 2026 performance metrics (beyond the forward consensus) are not detailed in the provided evidence, leaving a gap on the most recent operational momentum.
• Asset Quality Metrics: No specific data on Non-Performing Assets (NPA) or Net Charge-Offs (NCO) ratios for 2026 is provided, which is critical for a bank with significant CRE and ADC exposure.

PRIVATE ANALYST CALL

Judgment: Speculative Confidence: medium Key risks: 1) Sub-threshold ATR (2.1%) indicates low volatility and potential for extended consolidation; 2) Significant exposure to CRE and ADC loans which are sensitive to commercial real estate cycles; 3) Lack of a named secular thesis leaves the setup purely dependent on technical breakout execution. Sizing hint: Position size should be reduced relative to confirmed breakouts due to the "forming" status and low volatility; treat as a partial allocation pending confirmation. Expected path: Management expects sustainable growth via de novo expansion and the replication of their relationship model; the stock likely requires a volatility expansion and a decisive close above the consolidation range to trigger the next leg. Expected horizon: 3 to 6 months for the structural setup to resolve (breakout or invalidation).