📜 What This Document Is 🏛️

This filing is a Form 8-K, which is a mandatory filing used to report major, unscheduled events or material changes that happened at the company. In this case, it serves as a press release detailing Mercantile Bank Corporation's financial results for the first quarter of 2026. 🏦 It is designed to give investors and the public a detailed look at how the bank performed over the three months that ended March 31, 2026.

👉 What to expect: A deep dive into the bank's income, its asset quality, its funding sources, and management's outlook on the near-term economic environment.

🏦 What The Company Does 🧭

In simple terms, Mercantile Bank Corporation is a bank holding company that operates through two main entities: Mercantile Bank and Eastern Michigan Bank. These banks provide comprehensive financial products and services to businesses, individuals, and governmental units across the region. The company emphasizes being deeply connected to the local communities it serves.

• Core Business: Providing financial services, including deposits, commercial lending, and treasury management.
• Scale: As of March 31, 2026, the combined assets of both banks totaled approximately $6.9 billion, making them one of the largest Michigan-based banking organizations.
• How They Make Money: They earn money in two primary ways: Net Interest Income (the difference between the interest they earn on loans/investments and the interest they pay to depositors) and Non-Interest Income (fees from services like treasury management or mortgage banking).

💰 First Quarter Financial Performance 📊

The headline results show solid operational improvements for the quarter, though the bank provides two sets of earnings numbers (GAAP and Non-GAAP). The general takeaway is that the bank saw growth in its underlying operational income streams.

• Net Income (GAAP Basis): For Q1 2026, Mercantile reported a net income of $22.7 million, which equates to $1.32 per diluted share. This is a modest increase compared to the $19.5 million or $1.21 per diluted share reported in the same quarter of 2025.
• Adjusted Net Income (Non-GAAP Basis): When excluding one-time, non-recurring costs (like those related to a recent acquisition or a system conversion), the non-GAAP net income improved to $25.2 million, or $1.46 per diluted share. This adjustment shows an increase of $0.25 (or about 21%) per share compared to Q1 2025, suggesting stronger core operations.
• Return Metrics: The bank reported a Return on average assets of 1.4 percent and a Return on average equity of 12.5 percent (on a non-GAAP basis), indicating efficient use of its money.

🏦 Revenue Drivers: Interest and Fees 📈

Mercantile’s total net revenue was $67.6 million in Q1 2026, a substantial increase of $10.3 million (18.1%) from $57.3 million in the prior-year quarter. This increase was fueled by both earning interest and collecting service fees.

• Net Interest Income (NII): This segment hit $55.9 million—up $7.4 million (15.1%) from $48.5 million in Q1 2025.
  • Why it matters: NII shows that the bank is successfully managing its assets and investments, even as interest rates fluctuate.
• Non-Interest Income: This total reached $11.7 million, up significantly $3.0 million (34.3%) from $8.7 million in Q1 2025.
  • Key Growth Areas: The biggest boosters were treasury management fees, interest rate swap income, and payroll services fees. This growth is attributed to new commercial clients and increased use of existing products.

💰 The Health of Interest Rates 📉

The bank provided deep detail on how changing interest rates and the Federal Open Market Committee’s (FOMC) actions impacted its ability to generate money.

• Net Interest Margin: This margin remained healthy at 3.55 percent in Q1 2026, up from 3.47 percent the prior year.
  • Why it matters: This stability suggests the bank has implemented good risk management strategies, shielding its profitability from sharp interest rate changes.
• Cost of Funds: The cost of funds dropped to 1.87 percent in Q1 2026, down from 2.26 percent in Q1 2025. This reduction was due to the overall decreased interest rate environment, particularly lower rates paid on money market accounts and time deposits.
• Loan Yields: The yield on loans was 6.04 percent in Q1 2026, slightly down from 6.28 percent in Q1 2025. This change is noted as being partly due to the FOMC lowering the targeted federal funds rate in late 2025.

🛡️ Funding and Balance Sheet Strength 💵

The bank’s balance sheet metrics are highly revealing about its liquidity and its ability to fund future growth.

• Total Assets: Total assets grew modestly to $6.95 billion as of March 31, 2026, up $110 million from December 31, 2025.
• Total Deposits: Total deposits were $5.42 billion as of March 31, 2026.
  • Local Deposit Growth: This was a major highlight, with local deposits growing $185 million (an annualized 14.6%) in Q1 2026.
  • Why it matters: This robust growth, even with typical seasonal withdrawals, suggests that the bank is successfully attracting and retaining local customer funds.
• Loan-to-Deposit Ratio (LDR): This ratio is critical because it shows how much of the bank's deposits are tied up in loans. It dropped to 89 percent as of March 31, 2026.
  • The Context: This is a significant drop from 91% (year-end 2025) and 99% (March 2025). This reduction was mainly due to the influx of local deposits.

🏗️ Asset Quality and Lending Activity 🔍

This section covers the safety and quality of the bank's assets, which is paramount for any financial institution.

• Credit Losses: Mercantile recorded a negative provision for credit losses of $1.8 million in Q1 2026. This is a major shift, as the prior year, they recorded a positive provision of $2.1 million.
  • The Implication: A negative provision suggests management believes the economic forecast is improving, allowing them to lower their expected need for funds set aside for potential loan losses.
• Loan Pipeline/Originations: The bank noted a continued "strong commercial loan pipeline" and that commercial loan originations remained solid.
• Payoffs and Paydowns: While commercial loans grew, the report noted that payoffs and paydowns (money coming back from borrowers) were high during the quarter, but management expects these activities to "revert to historical levels during the remainder of 2026."

🏛️ Capital Strength and Governance 💪

The bank's capital structure confirms its financial resilience, which is important for regulators and investors alike.

• Capital Ratios: Mercantile Bank and Eastern Michigan Bank both maintained "well-capitalized" positions as of March 31, 2026, with total risk-based capital ratios of 13.8 percent and 20.5 percent, respectively.
• Regulatory Buffer: Critically, both banks had an excess of capital above the 10% minimum required regulatory threshold.
• Shareholder Returns: The bank's sustained financial strength allowed them to continue their regular cash dividend program.

🗣️ Management Outlook and Strategic Goals ✨

The executive commentary provides insight into the bank’s priorities for the future, beyond just the numbers.

• CEO Quote (Ray Reitsma): Mr. Reitsma stated, “The solid operating results reflected increased net interest income... The strong net growth in local deposits... provided for a further reduction in our loan-to-deposit ratio.”
  • Interpretation: Management is successfully framing its success around local community relationships and stable funding, rather than relying on volatile capital markets.
• Forward Focus: The primary strategic objectives remain:
  1. Growing the balance sheet in a cost-conscious manner.
  2. Continuing efforts to acquire new clients and deepen relationships with existing ones to boost non-interest income.
  3. Using the success of local deposit expansion to fund new loans and investments.

📅 Next Steps and Investor Resources 🗓️

For those who want to dive deeper into the details, the filing outlines specific resources and dates.

• Upcoming Call: The management plans to use presentation materials during its conference call on Tuesday, April 21, 2026, at 10:00 a.m. Eastern Time.
• Viewing Materials: These materials are available on the Investor Relations section of the company website at www.mercbank.com.

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🧠 The Analogy 💡

Think of a bank like a massive garden store. 🪴 When the economy is uncertain (the poor weather), other stores might struggle to sell goods. But if the garden store (Mercantile) consistently draws people in using its core service (excellent local service and reliable products), those people continue to bring in cash (local deposits). The extra cash from local deposits allows the store to borrow money for larger projects (loans) at a lower risk, keeping the entire operation healthy even when the market is unpredictable.

🧩 Final Takeaway 🔑

Mercantile Bank showed strong, stable core performance in Q1 2026, marked by record local deposit growth and strong fee-based revenue. This liquidity and healthy capital position position the bank well to fund future lending and investments despite global economic uncertainty.