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: ADAMS BRADLEY S. (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-02-19	Restricted Stock Units	A	26316	—	Acquired	86265	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp, Inc. Common Stock	127679	Direct
Old Second Bancorp, Inc. Common Stock	9983	Indirect

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of common stock. The reporting person was granted 26,316 restricted stock units on the date of the grant, 13,158 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 13,158 of which are performance-based restricted stock units that may vest and convert to shares within a range from 0% to 175% of the underlying performance-based restricted stock units originally awarded, depending on our compensation committee approved performance metrics. Vested shares, if any, will be delivered to the reporting person in 3 to 5 business days from the date of vesting.

F2: Of this total, 38,722 shares are Restricted Stock Units and 47,543 shares are Performance-based Restricted Stock Units.

F3: Included in this total are 75,300 shares held jointly with spouse with a broker and 52,379 shares held jointly with spouse outright.