OLD SECOND BANCORP INC — Director's Dealing 2025

Jul 7, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2025-06-30

Reporting Person: Eccher James (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-06-30	Old Second Bancorp, Inc. Common Stock	J	22	—	Acquired	6289	Indirect
2025-06-30	Old Second Bancorp, Inc. Common Stock	J	120	—	Acquired	32759	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp, Inc. Common Stock	329896	Direct
Restricted Stock Units	184318	Direct

Footnotes

F1: Of this total, 22 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employee Profit Sharing Plan and Trust. Information herein was provided by the plan trustee as of 6-30-25.

F2: Of this total, 120 shares were allocated during the second quarter pursuant to the Old Second Employee Salary and Savings Plan. Information herein was provided by the plan trustee as of 6-30-25.

F3: Included in this total are 148 shares held jointly with spouse and 329,748 shares held in a brokerage account.