Old Second Bancorp, Inc. (OSBC)
Nasdaq: OSBC · State Commercial Banks · Aurora, IL · filing with the SEC since 1995
Grade5.0
◀ Past 5.4● Present 4.9▶ Future 4.6
Who owns Old Second Bancorp, Inc.
As filed with the SECHolders of 5% or more
1
Dimensional Fund Advisors LP holds 5.1% of Common Stock, as its SCHEDULE 13G filed Oct 8, 2026 says.
Directors and officers
16
report now, of 24 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 1 named at left.
Holders of 5% or moreshare of the class, as filed
Dimensional Fund Advisors LP
SCHEDULE 13G · filed Oct 8, 2026 · Common Stock
FJ Capital Management LLC
SCHEDULE 13G/A · filed Nov 13, 2024 · Common Stock · reported falling below 5%
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%
What OSBC reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Old Second Capital Trust II
An entity · consolidated entity · owns, named in the 10-K filed Feb 26, 2026
Bancorp Financial
A company bought · acquisition · Jun 2025 · owns, named in the 10-K filed Feb 26, 2026
First Merchants Bank Branches
A company bought · acquisition · Nov 2024 · owns, named in the 10-K filed Feb 26, 2026
7 subsidiaries in 1 country, from the list filed with the 10-K filed Feb 26, 2026.
Insider tradesForm 4
20sales
2purchases
2sales on a scheduled plan
7people selling
$7.3Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Nov 10, 2025 to Nov 10, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Nov 10, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window8 of 24 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Eccher James | CHAIRMAN AND CEO | 2 | $1.9M | 2 | 0 | $0 |
| Collins Gary S | VICE CHAIRMAN | 7 | $1.6M | 0 | 0 | $0 |
| Campbell Darin Patrick | President, Powersports Lending | 3 | $1.3M | 0 | 0 | $0 |
| Mclean Hugh H | director | 2 | $1.3M | 0 | 0 | $0 |
| Ladowicz John | Director | 4 | $600,000 | 0 | 0 | $0 |
| Pilmer Donald | EVP | 1 | $500,000 | 0 | 0 | $0 |
| Lyons Billy J Jr. | director | 0 | $0 | 0 | 2 | $0 |
| Gartelmann Richard A Jr | EVP | 1 | $0 | 0 | 0 | $0 |