OLD SECOND BANCORP INC — Director's Dealing 2025

Apr 1, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2025-03-31

Reporting Person: ADAMS BRADLEY S. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-03-31	Old Second Bancorp, Inc. Common Stock	J	31	—	Acquired	10014	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp, Inc. Common Stock	143308	Direct
Restricted Stock Units	77444	Direct

Footnotes

F1: Of this total, 31 shares were allocated during the first quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the plan trustee as of 3-31-25.

F2: Included in this total are 75,300 shares held in a brokerage account and 68,008 shares held jointly with spouse outright.