OLD SECOND BANCORP INC — Director's Dealing 2025

Feb 21, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2025-02-19

Reporting Person: Lyons Billy J Jr. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-19	Restricted Stock Units	A	3190	—	Acquired	10551	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp, Inc. Common Stock	16895	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of common stock. The reporting person was granted 3,190 restricted stock units on the date of the grant. These shares are time-based restricted stock units that vest on the third anniversary of the grant date.

F2: Included in this total are 8,542 shares held in a brokerage account in Mr. Lyons name alone and 8,353 shares in Mr. Lyon's name outright.