Key facts
- This page summarizes John Ladowicz's Form 4 filing for OLD SECOND BANCORP INC (OSBC).
- 2 reported transactions and 0 derivative rows are listed below.
- Accepted by SEC: 26 Nov 2025, 16:57.
John Ladowicz - 26 Nov 2025 Form 4 Insider Report for OLD SECOND BANCORP INC (OSBC)
- Reporting relationship
- Director
- Issuer ticker
- OSBC
- Reported as of
- 26 Nov 2025
- Net transaction value
- -$249,991
- SEC form
- 4
- Accepted by SEC
- 26 Nov 2025, 16:57:37 UTC
- Prior SEC filing
- 21 Feb 2025
- Next SEC filing
- 09 Dec 2025
- Source filing
- View source filing
- Reporting owner signature
- /s/ Shirley Cantrell, Attorney-in-Fact
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
John Ladowicz filed Form 4 for OLD SECOND BANCORP INC (OSBC) on 26 Nov 2025.
Change
- Previous filing in this sequence was filed on 21 Feb 2025.
- Current net transaction value: -$249,991.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001424453
Primary reporting owner
Ladowicz John
- Relationship
- Director
- Address
- 8950 WILDLIFE LOOP, SARASOTA
- Signature
- /s/ Shirley Cantrell, Attorney-in-Fact
- Signature date
- 26 Nov 2025
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
OSBC
transaction
Old Second Bancorp, Inc. Common Stock
Sale
- Transaction value
- $249,991
- Shares
- -13,150
- Change %
- -7.5%
- Price
- $19.01
- Shares after
- 162,154
- Date
- 26 Nov 2025
- Ownership
- IRA
- Footnotes
- F1
OSBC
transaction
Restricted Stock Units
Other
- Transaction value
- $0
- Shares
- -10,551
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 14 Sep 2025
- Ownership
- Direct
OSBC
holding
Old Second Bancorp, Inc. Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 36,121
- Date
- 26 Nov 2025
- Ownership
- Direct
- Footnotes
- F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 2 footnotes
Footnote F1
Included in this total are 153,862 shares in a ROTH IRA and 8,292 shares in a traditional IRA.
Footnote F2
Included in this total are 10,551 shares of restricted stock units that vested automatically upon Mr. Ladowicz' retirement on September 14, 2025.