Filing of Certain Prospectuses and Communications in Connection With Business Combination Transactions (425)

Filed by Northwest Bancshares, Inc.

Pursuant to Rule 425 under the Securities Act of 1933

and deemed filed under Rule 14a-12

of the Securities Exchange Act of 1934

Registration Statement No. 333-235669

Subject Company: MutualFirst Financial, Inc.

Commission File No. 000-27905

Date: January 21, 2020