OLD SECOND BANCORP INC — Director's Dealing 2025

May 6, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2025-05-06

Reporting Person: Eccher James (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-05-06	Old Second Bancorp, Inc. Common Stock	J	3528	—	Acquired	326368	Direct
2025-05-06	Old Second Bancorp, Inc. Common Stock	J	3528	—	Acquired	329896	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp, Inc. Common Stock	32639	Indirect
Old Second Bancorp, Inc. Common Stock	6287	Indirect
Restricted Stock Units	184318	Direct

Footnotes

F1: Shares were acquired by the reporting person upon distribution of a trust due to the death of a family member, in accordance with the terms of the trust.

F2: Shares were acquired by the reporting person upon distribution of a trust due to the death of a family member, in accordance with the terms of the trust.

F3: Included in this total are 148 shares held jointly with spouse. The remaining 329,748 shares are held in Trust for the reporting person.