SEC Form 4 · accession 0001184766-26-000022
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 23, 2026
Accepted (ET)
Sep 23, 2026 · 6:34 pm 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 StockF1 | Sep 23, 2026 | S | 16,000 | $24.6925 | D | 14,136 | D | |
| Old Second Bancorp, Inc. Common Stock | holding | — | — | — | 7,095 | I | By 401-K | |
| Old Second Bancorp, Inc. Common StockF2 | holding | — | — | — | 53,136 | I | IRA | |
| Restricted Stock Units | holding | — | — | — | 37,312 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $24.575 to $24.75, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
- F2Included in this total are 30,880 shares in a ROTH IRA and 22,256.085 in a traditional IRA.