SEC Form 4 · accession 0001184766-26-000018
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
Jun 30, 2026
Accepted (ET)
Jul 2, 2026 · 10:22 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 StockF1 | Jun 30, 2026 | J | 37 | $0.00 | A | 7,095 | I | By 401-K |
| Old Second Bancorp, Inc. Common StockF2 | holding | — | — | — | 30,136 | D | ||
| Old Second Bancorp, Inc. Common StockF3 | holding | — | — | — | 58,136 | I | IRA | |
| Restricted Stock Units | holding | — | — | — | 37,312 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Of this total, 37 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employee Salary and Savings Plan. Information herein was provided by the Plan Trustee as of 6-30-26.
- F2These shares are held in a brokerage account in Mr. Collins' name.
- F3Included in this total are 30,880 shares in a ROTH IRA and 27,256.085 in a traditional IRA.