Company: OSBC
Filing Date: 2025-05-08
Form Type: 424B3
Source: 0001104659-25-046065
Chunk: 438

Company: OLD SECOND BANCORP INC
Filing Date: 2025-05-08
Form: 424B3
Chunk 438
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 binding on the spouse with respect to any rights which the spouse may now or in the future have, including but not limited to any community or other marital property rights in and to the Stock. By executing this Agreement, such spouse represents, warrants and agrees that:

(i) the spouse understands the terms and provisions of this Agreement and the effects that it has on the Stockholder’s and such spouse’s rights with regard to the Stock; and

(ii) with respect to any and all such rights which the spouse may now or in the future have in and to the Stock, that spouse shall be subject to all the terms and provisions of this Agreement as if such spouse were a Stockholder hereunder.

(b)

#### Successors
. This Agreement shall be binding upon and inure to the benefit of the Company and its successors and assigns, and on each Stockholder and such Stockholder’s successors and assigns legal representatives, executors and administrators.

(c)

#### Counterparts
. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one Agreement by and among the Company and the Stockholders.

<div align='center'>[NOTE: EXECUTION OF THE SUBSCRIPTION AGREEMENT IS DEEMED TO CONSTITUTE EXECUTION BY SUBSCRIBERS OF THIS STOCKHOLDERS AGREEMENT.]

D-5</div>