Old Second Bancorp, Inc. (OSBC) Insider Trading
Over the last 3 months, OSBC insiders made 0 open-market buys and 2 sales, a net sale of -$1.9M (SEC Form 4). Over the last 6 months, 139 institutions increased and 116 reduced their position (13F).
Insider Activity
Sentiment
0/100
Buys (3m)
0
Sells (3m)
2
Net (3m)
-$1.9M
Insider trades by month Buys Sells
Dec
Jan
Feb
Mar
May
Aug
Context3-month price +18.2%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 13, 2026 | Eccher Jamesdirector, officer: CHAIRMAN AND CEO | Sell | 19,313 | $25.61 |
| Aug 12, 2026 | Eccher Jamesdirector, officer: CHAIRMAN AND CEO | Sell | 55,687 | $25.46 |
| Aug 11, 2026 | Lyons Billy J Jr.director | Grant | 20 | $25.38 |
| May 26, 2026 | COLLINS GARY Sdirector, officer: VICE CHAIRMAN | Sell | 5,120 | $21.12 |
| May 21, 2026 | COLLINS GARY Sdirector, officer: VICE CHAIRMAN | Sell | 10,000 | $21.12 |
| May 12, 2026 | Lyons Billy J Jr.director | Buy | 24 | $20.90 |
| May 11, 2026 | Pilmer Donaldofficer: EVP | Sell | 25,000 | $20.75 |
| May 11, 2026 | COLLINS GARY Sdirector, officer: VICE CHAIRMAN | Sell | 10,000 | $21.24 |
| May 11, 2026 | COLLINS GARY Sdirector, officer: VICE CHAIRMAN | Sell | 5,000 | $21.23 |
| Mar 23, 2026 | COLLINS GARY Sdirector, officer: VICE CHAIRMAN | Sell | 22,154 | $19.38 |
| Mar 4, 2026 | COLLINS GARY Sdirector, officer: VICE CHAIRMAN | Grant | 14,432 | — |
| Mar 4, 2026 | COLLINS GARY Sdirector, officer: VICE CHAIRMAN | Tax | 4,228 | $19.91 |
| Mar 4, 2026 | Eccher Jamesdirector, officer: CHAIRMAN AND CEO | Tax | 12,838 | $19.91 |
| Mar 4, 2026 | Eccher Jamesdirector, officer: CHAIRMAN AND CEO | Grant | 43,818 | — |
| Mar 4, 2026 | Pilmer Donaldofficer: EVP | Grant | 9,201 | — |
| Mar 4, 2026 | Gartelmann Richard A JRofficer: EVP | Grant | 4,523 | — |
| Mar 4, 2026 | ADAMS BRADLEY S.officer: CFO & COO | Tax | 4,587 | $19.91 |
| Mar 4, 2026 | ADAMS BRADLEY S.officer: CFO & COO | Grant | 15,657 | — |
| Mar 4, 2026 | Gartelmann Richard A JRofficer: EVP | Tax | 1,537 | $19.91 |
| Mar 4, 2026 | Pilmer Donaldofficer: EVP | Tax | 2,720 | $19.91 |
| Feb 24, 2026 | Temple Rocks Pattidirector | Grant | 3,121 | — |
| Feb 24, 2026 | Williams John JRdirector | Tax | 3,077 | $20.57 |
| Feb 24, 2026 | YORK JILL Edirector | Tax | 3,077 | $20.57 |
| Feb 24, 2026 | Eccher Jamesdirector, officer: CHAIRMAN AND CEO | Tax | 7,515 | $20.57 |
| Feb 24, 2026 | Gartelmann Richard A JRofficer: EVP | Tax | 894 | $20.57 |
| Feb 24, 2026 | ADAMS BRADLEY S.officer: CFO & COO | Grant | 25,428 | — |
| Feb 24, 2026 | Lyons Billy J Jr.director | Tax | 3,077 | $20.57 |
| Feb 24, 2026 | Gartelmann Richard A JRofficer: EVP | Grant | 5,912 | — |
| Feb 24, 2026 | Williams John JRdirector | Grant | 3,121 | — |
| Feb 24, 2026 | Temple Rocks Pattidirector | Tax | 3,077 | $20.57 |
Source: OSBC SEC Form 4 filings, latest Aug 13, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their OSBC positions over the last 6 months (SEC Form 13F).
Increased
139
New positions
45
Reduced
116
Sold out
20
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| BlackRock, Inc. | Increased | 4.3M | Aug 7, 2026 |
| BLACKROCK, INC. | Reduced | 4.1M | May 13, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 2.5M | Aug 11, 2026 |
| DIMENSIONAL FUND ADVISORS LP | Increased | 2.4M | May 7, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | New Position | 2.3M | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 2.2M | Aug 13, 2026 |
| STATE STREET CORP | Increased | 1.8M | Aug 7, 2026 |
| Davis Asset Management, L.P. | Unchanged | 1.8M | Aug 12, 2026 |
| DAVIS ASSET MANAGEMENT, L.P. | Increased | 1.8M | May 15, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 1.8M | Aug 12, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 1.7M | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 1.6M | Aug 14, 2026 |
| STATE STREET CORP | Increased | 1.6M | May 15, 2026 |
| AMERICAN CENTURY COMPANIES INC | Increased | 1.6M | May 15, 2026 |
| FJ CAPITAL MANAGEMENT LLC | Reduced | 1.5M | May 15, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.