Mercantile Bank (MBWM) investor relations material

Executive summary

• Completed the acquisition of Eastern Michigan Bank/Financial Corporation on December 31, 2025, expanding deposit base, assets, and market presence in East and Southeast Michigan.

• Achieved 11% year-over-year EPS growth, reaching $5.47 in 2025, with ROAA at 1.4% and ROAE at 14.1%.

• Reported net income of $22.8 million ($1.40 per diluted share) for Q4 2025 and $88.8 million for the year.

• Maintained strong credit quality, with nonperforming assets at 0.12% of total assets and net loan charge-offs at 0.04% of average loans.

• Integration of the acquisition is underway, with positive early cultural alignment and focus on deposit and loan growth.

Financial highlights

• Net interest margin was 3.47% for 2025 (Q4 at 3.43%), down from 3.58% in 2024, supported by asset mix and funding strategies.

• Net interest income for 2025 was $201 million, up 5.2% year-over-year; noninterest income was $41.6 million, up 3%.

• Tangible book value per share rose to $36.78, up 11% from year-end 2024.

• Allowance for credit losses was 1.21% of loans at year-end 2025.

• Loan-to-deposit ratio improved to 91% at year-end 2025, down from 98% in 2024.

Outlook and guidance

• Projecting 5%-7% annualized loan growth per quarter in 2026, with net interest margin expected between 3.55% and 3.80%.

• Overhead costs expected at $37.5–40 million per quarter, with a federal tax rate of 17% and continued tax credit benefits.

• Non-interest expense projections include investments in Southeast Michigan expansion and digital banking upgrades.

• Minimal cost savings from the acquisition expected in 2026; significant efficiencies anticipated in 2027 with core processor switch.

• No rate changes expected in 2026.