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: COLLINS GARY 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	220	—	Acquired	6590	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp, Inc. Common Stock	63112	Direct
Old Second Bancorp, Inc. Common Stock	61768.0850	Indirect
Restricted Stock Units	44946	Direct

Footnotes

F1: Of this total, 220 shares were allocated during the first quarter pursuant to the Old Second Employee Salary and Savings Plan. Information herein was provided by the plan trustee as of 3-31-25.

F2: Included in this total are 16,488 shares in Mr. Collins' name outright and 46,624 shares in Mr. Collins name in a broker account.

F3: Included in this total are 41,000 shares in a ROTH IRA and 20,768.085 in a traditional IRA.