Associated Banc-Corp (ASB) Q4 2025 earnings review

Record Earnings Validate 'Balance Sheet Remix' Strategy

Associated Banc-Corp delivered a pivotal Q4 performance, cementing 2025 as a transformational year. The company's strategic pivot—selling low-yield mortgages to fund high-yield Commercial & Industrial (C&I) loans—drove Net Interest Income (NII) up 15% YoY to record levels. Net Income available to common equity swung to $134M ($0.80/share) from a loss of $164M in the prior year (caused by repositioning charges). While 2025 was a breakout year for margin expansion (NIM +25bps YoY), 2026 guidance suggests a normalization phase, with NII growth decelerating to 5.5%-6.5% as the base effects of the restructuring fade.

🐂 Bull Case

Margin Expansion Continues

The spread is widening. Yield on earning assets held relatively steady (-12bps YoY), but the cost of interest-bearing liabilities dropped significantly (-47bps YoY). This drove NIM to 3.06%, up from 2.81% a year ago, proving the bank's asset sensitivity is becoming a tailwind as funding costs drop faster than asset yields.

Pristine Credit Quality

Despite macro fears, credit is improving. Net charge-offs collapsed to just $2M (0.03% annualized) in Q4, down from $12M a year ago. Nonaccrual loans decreased 19% YoY to $100M. The bank is over-reserved relative to current loss rates.

🐻 Bear Case

Growth Deceleration Ahead

The 'easy' comps are over. 2025 NII grew 15% due to the one-time balance sheet restructure. 2026 guidance calls for 5.5-6.5% growth. Investors pricing in continued double-digit expansion will be disappointed.

Integration Risk

With organic transformation largely complete, focus shifts to the acquisition of American National Bank later in 2026. M&A integration introduces execution risk and potential expense friction that could disrupt the clean operating leverage story.

⚖️ Verdict: 🟢

Bullish. ASB executed its restructuring perfectly. The bank is generating record profits, credit costs are negligible, and it is entering 2026 with a stronger balance sheet and lower funding costs. The deceleration in 2026 is mathematical (base effects), not operational.

Key Themes

DRIVER🟢🟢

Commercial Lending (C&I) Powering Assets

The strategic shift away from low-yield mortgages to commercial relationships is fully realized. Commercial & Business lending (C&I) grew 11% YoY to $13.0B, while Residential Mortgage loans dropped 4% YoY. This mix shift is the primary engine behind the 15% NII growth.

DRIVERNEW🟢

Plummeting Funding Costs

ASB is benefiting rapidly from easing deposit costs. The average cost of interest-bearing liabilities fell 21 basis points sequentially (from 3.03% in Q3 to 2.82% in Q4). This outpaced the decline in asset yields, directly expanding the Net Interest Margin to 3.06%.

CONCERN

Consumer Lending Runoff

Consumer lending (excluding residential mortgage) contracted $537M YoY (-5%). While Auto Finance is growing slightly (+2% QoQ), the broader consumer book is shrinking. If C&I growth slows, the consumer segment is currently not positioned to pick up the slack.

CONCERN🔴

Brokered CD Reliance

While improving, the bank still holds significant wholesale funding. Brokered CDs sit at $3.8B. However, this is down $481M YoY, indicating a positive trend toward core funding, but remains a higher-cost line item susceptible to market volatility.

DRIVERNEW🟢

Credit Quality Defying Trends

At a time when many regional banks are seeing normalization (rising) in credit costs, ASB is seeing the opposite. Net charge-offs fell 83% sequentially to $2M. Nonaccrual loans are down to 0.32% of total loans. This allowed Provision for Credit Losses to drop to $7M (vs $16M in Q3), directly boosting EPS.

Other KPIs

Net Interest Income (25Q4)$310 million

Accelerating. Up 15% YoY and 2% sequentially. The combination of 5% loan growth and 25bps of margin expansion created powerful operating leverage.

Noninterest Expense (25Q4)$219 million

Stable. Down 2% YoY. Personnel expense increased $9M YoY due to performance incentives, but was offset by the non-recurrence of FHLB prepayment penalties from 2024. Efficiency is well-controlled.

CET1 Capital Ratio (25Q4)10.49%

Strengthening. Improved from 10.33% in Q3 and well above regulatory requirements. This capital build supports the upcoming American National acquisition and organic growth.

Guidance

2026 Total Loan Growth5% - 6%

Stable. Consistent with the 5% growth achieved in 2025. Suggests management sees the C&I growth engine as sustainable despite macro uncertainty.

2026 Net Interest Income Growth5.5% - 6.5%

Decelerating significantly from the 15% growth seen in 2025. This reflects the mathematical reality of lapping the 2024 balance sheet restructuring. It implies stability, not the explosive expansion of the prior year.

2026 Noninterest Income Growth4% - 5%

Accelerating. Up from the flat/noisy performance of 2025 (excluding one-offs). Suggests confidence in wealth management and capital markets fees.

2026 Total Deposit Growth5% - 6%

Accelerating. 2025 saw 3% deposit growth. Management expects to fully fund loan growth with deposits in 2026, eliminating the funding gap seen in prior years.

Key Questions

American National Integration Timeline

With the acquisition expected to close 'later this year,' can you provide specificity on the conversion timeline and when we can expect the first clean quarter of combined financials?

Sustainability of Credit Performance

Net charge-offs of $2 million (0.03% of loans) is exceptionally low. Is this sustainable in 2026, or should we model a normalization back toward the 0.15-0.20% range seen earlier in 2025?

Deposit Beta in Rate Cut Cycle

Interest-bearing deposit costs fell 21bps this quarter. As the Fed continues to cut, do you expect to maintain this pace of deposit cost reduction, or was Q4 an anomaly due to specific CD repricing?

Commercial Real Estate Appetite

CRE loans were essentially flat YoY. Given the rate environment changes, does 2026 guidance assume a return to growth in CRE, or will C&I continue to carry the entire load?