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 0 open-market purchases and 7 sales; 184 institutions reported holding it in 13F filings for Q2 2026, worth $903.3M in total; no superinvestor holds it.
Holders of 5% or more of OSBC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Old Second Bancorp Inc, largest stake first. The change is against the holder's previous filing.
No holder currently reports owning 5% or more of Old Second Bancorp Inc on Schedule 13D or 13G.
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
2 Schedule 13D and 13G filings on Old Second Bancorp Inc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 202611:08 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | –Below 5% | Mar 13, 2026 | SEC |
| Nov 13, 20242:20 PM ET | FJ Capital Management LLCand 8 others | 13G/A | 4.17%1.87M shares | –Below 5% | Sep 30, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Old Second Bancorp Inc shares.
No Form 144 notices for Old Second Bancorp Inc are on file.