John Ladowicz - 26 Nov 2025 Form 4 Insider Report for OLD SECOND BANCORP INC (OSBC)

Role
Director
Signature
/s/ Shirley Cantrell, Attorney-in-Fact
Issuer symbol
OSBC
Transactions as of
26 Nov 2025
Net transactions value
-$249,991
Form type
4
Filing time
26 Nov 2025, 16:57:37 UTC
Previous filing
21 Feb 2025
Next filing
09 Dec 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Ladowicz John Director 8950 WILDLIFE LOOP, SARASOTA /s/ Shirley Cantrell, Attorney-in-Fact 26 Nov 2025 0001424453

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction OSBC Old Second Bancorp, Inc. Common Stock Sale $249,991 -13,150 -7.5% $19.01 162,154 26 Nov 2025 IRA F1
transaction OSBC Restricted Stock Units Other $0 -10,551 -100% $0.000000 0 14 Sep 2025 Direct
holding OSBC Old Second Bancorp, Inc. Common Stock 36,121 26 Nov 2025 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Included in this total are 153,862 shares in a ROTH IRA and 8,292 shares in a traditional IRA.
F2 Included in this total are 10,551 shares of restricted stock units that vested automatically upon Mr. Ladowicz' retirement on September 14, 2025.