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
Transactions value $
-$249,991
Form type
4
Filing time
26 Nov 2025, 16:57:37 UTC
Previous filing
21 Feb 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 -$250K -13.2K -7.5% $19.01 162K 26 Nov 2025 IRA F1
transaction OSBC Restricted Stock Units Other $0 -10.6K -100% $0.00 0 14 Sep 2025 Direct
holding OSBC Old Second Bancorp, Inc. Common Stock 36.1K 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.