OLD SECOND BANCORP INC — Director's Dealing 2024

Feb 22, 2024

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: OLD SECOND BANCORP INC (OSBC)
CIK: 0000357173
Period of Report: 2024-02-20

Reporting Person: Pilmer Donald (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2024-02-20	Restricted Stock Units	A	16064	—	Acquired	34836	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Old Second Bancorp, Inc. Common Stock	3900	Indirect
Old Second Bancorp, Inc. Common Stock	177	Indirect
Old Second Bancorp, Inc. Common Stock	1450	Indirect
Old Second Bancorp, Inc. Common Stock	57649	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of common stock. The reporting person was granted 16,064 restricted stock units on the date of the grant, 8,032 of which are time-based restricted stock units that vest on the third anniversary of the grant date, and 8,032 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, 13,288 shares are Performance Based Restricted Stock Units and 21,548 shares of Restricted Stock Units.

F3: These shares are held in spouse's IRA for which Mr. Pilmer is listed as a beneficiary.

F4: Included in this total are 50,976 shares held in a brokerage account and 6,673 shares in Mr. Pilmer's name alone.