Old Second Bancorp Inc
OSBC- Exchange
- Nasdaq
- Industry
- State Commercial Banks
- SEC CIK
- 0000357173
In the last 90 days, Old Second Bancorp Inc insiders filed 1 open-market purchase and 5 sales; 184 institutions reported holding it in 13F filings for Q2 2026, worth $903.3M in total; no superinvestor holds it.
Key figures
- Market capClose on Nov 11, 2026
- $1.24B
- Insider buysLast 90 days, $572.24 in total
- 1
- Insider sellsLast 90 days, $2.42M in total
- 5
- 13F holdersQ2 2026, −1 vs. previous quarter
- 184
- 13F valueReported value at the end of Q2 2026
- $903.3M
- Superinvestors holdingAt the end of Q2 2026
- 0
Price chart
Financials
See financial statementsFrom SEC filings, in USD.
- Revenue, FY2025
- $355.2M
- +19.2% year over year
- Net income, FY2025
- $80.3M
- −5.8% year over year
- Free cash flow, FY2025
- $117.8M
- −2.5% year over year
- Revenue, Q3 FY2026
- $102.1M
- −1.9% year over year
Revenue flow, FY2025
Green is profit; orange is costs, expenses and taxes. Percentages are shares of revenue.
Short interest
See short dataFrom FINRA, settlement date Oct 30, 2026.
- Short interest
- 3.19M
- Shares sold short
- Change
- +150.4K
- +5.0% vs. previous
- Days to cover
- 5.19
- At average daily volume
Superinvestors holding OSBC, Q2 2026
Go to the superinvestors tabNo superinvestor reported holding OSBC at the end of Q2 2026.
Latest insider trades
See all insider tradesOpen-market purchases and sales by Old Second Bancorp Inc insiders from Form 4, newest first.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Nov 10, 2026 (view filing)1:12 PM ET | Nov 9 | 1 day | Lyons Billy J Jr.Director | PPurchaseOld Second Bancorp, Inc. Common Stock | +23 | $24.88 | +$572.24 | +0.1%20.1K after | |
| Sep 23, 2026 (view filing)6:34 PM ET | Sep 23 | Same day | Collins Gary SVICE CHAIRMAN | SSaleOld Second Bancorp, Inc. Common Stock | −16.0K | $24.69 | −$395.1K | −53.1%14.1K after | |
| Sep 11, 2026 (view filing)11:50 AM ET | Sep 4 | 7 daysLate | Collins Gary SVICE CHAIRMAN | SSaleOld Second Bancorp, Inc. Common Stock | −5.00K | $25.71 | −$128.5K | −8.6%53.1K after | |
| Sep 8, 2026 (view filing)5:17 PM ET | Sep 8 | Same day | McLean Hugh HDirector | SSaleOld Second Bancorp, Inc. Common Stock | −25.0K | $25.63 | −$640.8K | −15.6%135.4K after | |
| Sep 3, 2026 (view filing)5:40 PM ET | Sep 3 | Same day | McLean Hugh HDirector | SSaleOld Second Bancorp, Inc. Common Stock | −25.0K | $25.73 | −$643.2K | −15.6%135.4K after | From original |
| Sep 3, 2026 (view filing)5:33 PM ET | Sep 2 | 1 day | Campbell Darin PatrickPresident, Powersports Lending | SSaleOld Second Bancorp, Inc. Common Stock | −24.0K | $25.53 | −$612.8K | −8.7%250.6K after | |
| Aug 13, 2026 (view filing)10:47 AM ET | Aug 12 | 1 day | Eccher JamesCHAIRMAN AND CEO | SSaleOld Second Bancorp, Inc. Common Stock | −19.3K | $25.61 | −$494.7K | −6.0%303.4K after | 10b5-1 |
| Aug 12, 2026 (view filing)4:52 PM ET | Aug 11 | 1 day | Eccher JamesCHAIRMAN AND CEO | SSaleOld Second Bancorp, Inc. Common Stock | −55.7K | $25.46 | −$1.42M | −14.7%322.7K after | 10b5-1 |
| May 26, 2026 (view filing) | May 22 | 4 days | Collins Gary SVICE CHAIRMAN | SSaleOld Second Bancorp, Inc. Common Stock | −5.12K | $21.12 | −$108.1K | −8.1%58.1K after | |
| May 21, 2026 (view filing) | May 21 | Same day | Collins Gary SVICE CHAIRMAN | SSaleOld Second Bancorp, Inc. Common Stock | −10.0K | $21.12 | −$211.2K | −13.7%63.3K after |
Top 10 13F holders, Q2 2026
See all 184 holdersThe largest institutional positions in Old Second Bancorp Inc at the end of Q2 2026; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4,298,683 | $100.2M | 0.00% | +172,439+4.2% | Added |
| Dimensional Fund Advisors LP | 2,498,671 | $58.3M | 0.01% | +109,809+4.6% | Added |
| Vanguard Capital Management LLC | 2,179,877 | $50.8M | 0.00% | −71,972−3.2% | Reduced |
| State Street Corp | 1,839,202 | $42.9M | 0.00% | +239,900+15.0% | Added |
| Davis Asset Management, L.P. | 1,800,000 | $42.0M | 1.06% | 00.0% | Unchanged |
| American Century Companies Inc | 1,783,820 | $41.6M | 0.02% | +192,877+12.1% | Added |
| Goldman Sachs Group Inc | 1,624,852 | $37.9M | 0.00% | −66,671−3.9% | Reduced |
| FJ Capital Management LLC | 1,460,413 | $34.1M | 4.42% | −44,689−3.0% | Reduced |
| Boston Partners | 1,415,165 | $32.9M | 0.03% | −28,724−2.0% | Reduced |
| Geode Capital Management, LLC | 1,349,432 | $31.5M | 0.00% | +67,421+5.3% | Added |
Holders of 5% or more of OSBC
See all 2 holders and filingsHolders whose latest Schedule 13D or 13G filing reports 5% or more of Old Second Bancorp Inc.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Dimensional Fund Advisors LP | 13G | 5.10%2.58M shares | New | Oct 8, 20261 filing | Oct 8, 2026 | SEC |
| Vanguard Capital Management LLC | 13G | 5.03%2.56M shares | New | Oct 30, 20261 filing | Oct 30, 2026 | SEC |