Company: FRME
Filing Date: 2025-11-06
Form Type: 424B3
Source: 0001193125-25-268801
Chunk: 31

Company: FIRST MERCHANTS CORP
Filing Date: 2025-11-06
Form: 424B3
Chunk 31
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000,558 shares of First Savings common stock are outstanding at the time of closing (which was
the number of shares of First Savings common stock outstanding on September 24, 2025, plus 24,000 shares of restricted stock that First Savings intends to issue in November 2025).

The pro forma information reflects the purchase method of accounting, with First Savings’ assets and liabilities recorded at their
estimated fair values as of the date presented. The actual fair value adjustments to the assets and the liabilities of First Savings will be made on the basis of appraisals and evaluations that will be made as of the date the Merger is completed.
Thus, the actual fair value adjustments may differ significantly from those reflected in these pro forma financial statements. In the opinion of First Merchants’ management, the estimates used in the preparation of these pro forma financial
statements are reasonable under the circumstances.

We expect that we will incur reorganization and restructuring expenses as a result of
combining our companies. We also anticipate that the Merger will provide the combined company with financial benefits that include reduced operating expenses and the opportunity to earn more revenue. The pro forma information, while helpful in
illustrating the financial characteristics of the combined company under two sets of assumptions, does not take into account these expected expenses or anticipated financial benefits, and does not attempt to predict or suggest future results.

This selected financial data is only a summary and you should read it in conjunction with First Merchants’ consolidated financial
statements and related notes incorporated into this document by reference. See “WHERE YOU CAN FIND ADDITIONAL INFORMATION” on page 89 for a description of documents that we incorporate by reference into this document and how to obtain
copies of such documents.

16

FIRST MERCHANTS FIVE YEAR SUMMARY OF SELECTED HISTORICAL CONSOLIDATED FINANCIAL DATA (Dollars in Thousands, Except Per Share Amounts)

| Summary of Operations                                 |     | For the Six Months 
 Ended June 30,     
 2025               
 (unaudited)        |            |   |     | 2024 |            |   |     | For the Years Ended December 31, 
 2024                             |            |   |     | 2023 |            |   |     | 2022 |            |   |     | 2021 |            |   |     | 2020 |            |   |
|:------------------------------------------------------|:----|:-------------------|-----------:|:--|:----|:-----