Company: FRME
Filing Date: 2025-11-06
Form Type: 424B3
Source: 0001193125-25-268801
Chunk: 119

Company: FIRST MERCHANTS CORP
Filing Date: 2025-11-06
Form: 424B3
Chunk 119
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 First Merchants in this proxy
statement and prospectus has been provided by First Merchants, and all information in this proxy statement and prospectus regarding First Savings has been provided by First Savings.

91

Annex A

Execution Version

AGREEMENT AND PLAN OF MERGER

BETWEEN

FIRST MERCHANTS CORPORATION

AND

FIRST SAVINGS FINANCIAL GROUP, INC.

THIS AGREEMENT AND PLAN OF MERGER (the “Agreement”) is entered into as of the 24 day of September, 2025, by and between FIRST MERCHANTS CORPORATION, an Indiana corporation (“First Merchants”), and FIRST SAVINGS FINANCIAL GROUP, INC., an Indiana
corporation (“First Savings”).

W I T N E S S E T H:

WHEREAS, First Merchants is a registered bank holding company under the Bank Holding Company Act of 1956, as amended, with its
principal place of business in Muncie, Delaware County, Indiana, with First Merchants Bank, an Indiana commercial bank (“FMB”), as its wholly-owned subsidiary;

WHEREAS, First Savings is a registered bank holding company that has elected financial holding company status under the Bank Holding
Company Act of 1956, as amended, with its principal place of business in Jeffersonville, Clark County, Indiana, with First Savings Bank, an Indiana commercial bank (the “Bank”), as its wholly-owned subsidiary;

WHEREAS, Southern Indiana Financial Corporation, an Indiana corporation (“Southern”), First Savings Investments,
Inc., a Nevada corporation (“Investments”), Q2 Business Capital, LLC, an Indiana limited liability company (“Q2”), and Crimson Properties, LLC, a Kentucky limited liability company
(“Crimson”), are wholly-owned subsidiaries of the Bank (the Bank, Southern, Investments, Q2, and Crimson are sometimes collectively referred to herein as the “Subsidiaries”or individually as a
“Subsidiary”);

WHEREAS, it is the desire of First Merchants and First Savings to effect a series of
transactions whereby (i) First Savings will merge with and into First Merchants, and (ii) the Bank will merge with and into FMB;

WHEREAS, as a condition and inducement to the willingness of First Merchants to enter into this Agreement, each director of First
Savings and certain executive officers of First Savings and/or the Bank has entered into an agreement dated as of the date hereof in the form attached hereto as , pursuant to