🕵️ Old Second Bancorp Inc ($OSBC)
SEC insider & ownership activity, last 12 months · CIK 357173 · every row links its SEC filing
Over the last 12 months insiders sold $4.0M against $917 of open-market buying. Campbell Darin Patrick sold $1.8M (Oct–Feb). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
1 buyer, $917 (2 lots) · 5 sellers, $4.0M (15 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Campbell Darin Patrick | 0 | – | 4 | $1.8M | Feb 18, 2026 |
| Gary S. Collins | 0 | – | 5 | $1.1M | May 22, 2026 |
| Ladowicz John | 0 | – | 4 | $600K | Jan 15, 2026 |
| Pilmer Donald | 0 | – | 1 | $519K | May 11, 2026 |
| Richard A. Gartelmann Jr. | 0 | – | 1 | $42K | Feb 5, 2026 |
| Billy J. Lyons Jr. | 2 | $917 | 0 | – | May 11, 2026 |
5%+ holders
No current 5%+ beneficial-ownership positions on file.
Planned insider sales (Form 144)
No sale notices filed in the last 12 months.
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Earnings (2.02) | Jul 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 22, 2026 | filing ↗ |
| Other events (8.01) | Jul 21, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jul 7, 2026 | filing ↗ |
| Other events (8.01) | Jul 1, 2026 | filing ↗ |
| Other events (8.01) | Jun 25, 2026 | filing ↗ |
| Officer/director changes (5.02) | Jun 5, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 19, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 19, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 19, 2026 | filing ↗ |
| Earnings (2.02) | Apr 22, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 22, 2026 | filing ↗ |
| Other events (8.01) | Apr 21, 2026 | filing ↗ |
| Other events (8.01) | Apr 1, 2026 | filing ↗ |
| Other events (8.01) | Mar 4, 2026 | filing ↗ |
| Other events (8.01) | Jan 29, 2026 | filing ↗ |
| Earnings (2.02) | Jan 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jan 21, 2026 | filing ↗ |
| Other events (8.01) | Jan 20, 2026 | filing ↗ |
| Other events (8.01) | Jan 2, 2026 | filing ↗ |
| Earnings (2.02) | Oct 22, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Oct 22, 2025 | filing ↗ |
| Other events (8.01) | Oct 21, 2025 | filing ↗ |
| Other events (8.01) | Oct 1, 2025 | filing ↗ |
| Officer/director changes (5.02) | Sep 14, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Jul 1, 2025 | filing ↗ |