James Eccher - 12 Aug 2026 Form 4 Insider Report for OLD SECOND BANCORP INC (OSBC)

Reporting relationship: CHAIRMAN AND CEO, Director
Issuer ticker: OSBC
Reported as of: 12 Aug 2026
Net transaction value: -$494,701
SEC form: 4
Accepted by SEC: 13 Aug 2026, 10:47:42 UTC
Prior SEC filing: 12 Aug 2026
Source filing: View source filing
Reporting owner signature: /s/ Shirley Cantrell, Attorney-in-Fact

Key filing fact

James Eccher filed Form 4 for OLD SECOND BANCORP INC (OSBC) on 13 Aug 2026.

Key facts

This page summarizes James Eccher's Form 4 filing for OLD SECOND BANCORP INC (OSBC).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 13 Aug 2026, 10:47.

Change

Previous filing in this sequence was filed on 12 Aug 2026.
Current net transaction value: -$494,701.

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

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001314109 Primary reporting owner

Eccher James

Relationship: CHAIRMAN AND CEO, Director
Address: 37 S. RIVER ST., AURORA
Signature: /s/ Shirley Cantrell, Attorney-in-Fact
Signature date: 13 Aug 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: $494,701
Shares: -19,313
Change %: -6%
Price: $25.61
Shares after: 303,399
Date: 12 Aug 2026
Ownership: Direct
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 3 footnotes

Footnote F1

The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 1, 2026.

Footnote F2

The price reported is a weighted average price. The transactions were effected at prices ranging from $25.48 to $25.79.

Footnote F3

Included in this total are 303,251 shares held at a brokerage firm in the reporting person's name and 148 shares held jointly with spouse outright.