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: 16 Jan 2026, 13:54.
John Ladowicz - 15 Jan 2026 Form 4 Insider Report for OLD SECOND BANCORP INC (OSBC)
- Reporting relationship
- Director
- Issuer ticker
- OSBC
- Reported as of
- 15 Jan 2026
- Net transaction value
- -$99,756
- SEC form
- 4
- Accepted by SEC
- 16 Jan 2026, 13:54:33 UTC
- Prior 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.
4 source fields
Reporting owner
1 detail
Key filing fact
John Ladowicz filed Form 4 for OLD SECOND BANCORP INC (OSBC) on 16 Jan 2026.
Change
- Previous filing in this sequence was filed on 09 Dec 2025.
- Current net transaction value: -$99,756.
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
- 16 Jan 2026
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
- $60,666
- Shares
- -2,897
- Change %
- -1.9%
- Price
- $20.94
- Shares after
- 146,757
- Date
- 15 Jan 2026
- Ownership
- IRA
OSBC
transaction
Old Second Bancorp, Inc. Common Stock
Sale
- Transaction value
- $39,090
- Shares
- -1,865
- Change %
- -1.3%
- Price
- $20.96
- Shares after
- 144,892
- Date
- 15 Jan 2026
- Ownership
- IRA
OSBC
holding
Old Second Bancorp, Inc. Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 36,121
- Date
- 15 Jan 2026
- Ownership
- Direct
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Section 16 status
John Ladowicz is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.