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NASDAQ: OSBC
Old Second Bancorp Inc Stock Ownership - Who owns Old Second Bancorp?

OverviewForecastEarningsRevenueDividendOwnership

Insider buying vs selling

Have Old Second Bancorp Inc insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Donald PilmerEVP2026-05-1125,000$20.75
$518.80kSell
Billy J. Lyons Jr.Director2026-05-1124$20.90
$501.60Buy
Gary S. CollinsVICE CHAIRMAN2026-05-0810,000$21.24
$212.40kSell
Gary S. CollinsVICE CHAIRMAN2026-05-085,000$21.23
$106.13kSell
Gary S. CollinsVICE CHAIRMAN2026-03-2022,154$19.38
$429.43kSell
Donald PilmerEVP2026-03-022,720$19.91
$54.16kSell
James EccherCHAIRMAN AND CEO2026-03-0212,838$19.91
$255.60kSell
Richard A. Gartelmann Jr.EVP2026-03-021,537$19.91
$30.60kSell
Bradley S. AdamsCFO COO2026-03-024,587$19.91
$91.33kSell
Gary S. CollinsVICE CHAIRMAN2026-03-024,228$19.91
$84.18kSell

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Net Insider Buy/Sell (L12M) Ownership

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OSBC Shareholders

What type of owners hold Old Second Bancorp Inc stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Blackrock Inc8.02%4,126,244$84.30MInstitution
Dimensional Fund Advisors LP4.64%2,388,862$48.80MInstitution
Vanguard Capital Management LLC4.38%2,251,849$46.01MInstitution
Davis Asset Management LP3.50%1,800,000$36.77MInstitution
Goldman Sachs Group Inc 13.29%1,691,523$34.56MInstitution
State Street Corp3.11%1,599,302$32.67MInstitution
American Century Companies Inc3.09%1,590,943$32.50MInstitution
Fj Capital Management LLC2.93%1,505,102$30.75MInstitution
Boston Partners2.81%1,443,889$29.50MInstitution
Geode Capital Management LLC2.49%1,282,011$26.19MInstitution

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OSBC vs Bank Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
OSBC72.70%9.08%Net SellingNet Selling
OCFC85.23%9.65%Net SellingNet Selling
UVSP79.35%9.09%Net SellingNet Selling
CCB75.18%24.82%Net SellingNet Selling
HFWA78.97%5.44%Net BuyingNet Buying
View Top Bank Stocks

Old Second Bancorp Stock Ownership FAQ

Who owns Old Second Bancorp?

Old Second Bancorp (NASDAQ: OSBC) is owned by 72.70% institutional shareholders, 9.08% Old Second Bancorp insiders, and 18.22% retail investors. John Ladowicz is the largest individual Old Second Bancorp shareholder, owning 1.03M shares representing 2.01% of the company. John Ladowicz's Old Second Bancorp shares are currently valued at $21.14M.

If you're new to stock investing, here's how to buy Old Second Bancorp stock.
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