PILMER DONALD

PrivateCIK: 1673321
Location

AURORA, IL

PILMER DONALD (EVP) reported 1 transaction at OLD SECOND BANCORP INC

Review the transaction codes below to understand the nature of each event.

InsiderPILMER DONALDCIK 1673321
IssuerOLD SECOND BANCORP INCCIK 357173
Officer· EVP
Since Jun 2018
+15.00
Net shares
Net buyer
$0.00
Total acquired
0
Open market trades
0B · 0S
1
Total transactions
15.00 acquired
Non-Derivative Transactions1

Old Second Bancorp, Inc. Common Stock

Indirect
J · J

Shares

+15.00

Price / share

Trade value

% of position

0.4%
12/31/2025
4K4.01K
Total

Net shares

+15.00

Net value

$0.00

Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)4

Old Second Bancorp, Inc. Common Stock

Direct
Shares owned63.13K

Old Second Bancorp, Inc. Common Stock

Indirect
Shares owned1.45K

Restricted Stock Units

Direct
Shares owned38.72K

Old Second Bancorp, Inc. Common Stock

Indirect
Shares owned182.00
Total
101.85K direct·1.63K indirect103.48K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
PILMER DONALD — Insider Transaction (Form 4) Filed Jan 5, 2026 | Finecho