SEC Form 4 · accession 0001184766-26-000020
OLD SECOND BANCORP INC · OSBC
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Gary S Collins
Officer — VICE CHAIRMAN · Director
Period of report
Sep 4, 2026
Accepted (ET)
Sep 11, 2026 · 11:50 am EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0000357173
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Old Second Bancorp, Inc. Common Stock | Sep 4, 2026 | S | 5,000 | $25.705 | D | 53,136 | I | IRA |
| Old Second Bancorp, Inc. Common Stock | holding | — | — | — | 7,095 | I | By 401-K | |
| Restricted Stock Units | holding | — | — | — | 37,312 | D |
Table II — derivative securities
No Table II lines on this filing.