PILMER DONALD

PrivateCIK: 1673321
Location

AURORA, IL

PILMER DONALD (EVP) sold 34.2% of their position (25K shares) of OLD SECOND BANCORP INC on the open market

Open‑market sale worth $518.8K — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderPILMER DONALDCIK 1673321
IssuerOLD SECOND BANCORP INCCIK 357173
Officer· EVP
Since Jun 2018
-25K
Net shares
Net seller
$518.8K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
25K disposed
Non-Derivative Transactions1

Old Second Bancorp, Inc. Common Stock

Direct
S · Sale

Shares

25K

Price / share

$20.75

Trade value

$518.79K

% of position

34.2%
5/11/2026
73.05K48.05K
Total

Net shares

25K

Net value

-$518.79K

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

Old Second Bancorp, Inc. Common Stock

Indirect
Shares owned4.02K

Old Second Bancorp, Inc. Common Stock

Indirect
Shares owned183.00

Restricted Stock Units

Direct
Shares owned39.50K

Old Second Bancorp, Inc. Common Stock

Indirect
Shares owned1.45K
Total
39.50K direct·5.66K indirect45.15K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
PILMER DONALD — Insider Transaction (Form 4) Filed May 11, 2026 | Finecho