SEC Form 4 · accession 0001673321-26-000012
OLD SECOND BANCORP INC · OSBC
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Donald Pilmer
Officer — EVP
Period of report
Jun 30, 2026
Accepted (ET)
Jul 2, 2026 · 10:15 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 | 1 | $0.00 | A | 184 | I | By Profit Sharing Plan |
| Old Second Bancorp, Inc. Common StockF2 | Jun 30, 2026 | J | 14 | $0.00 | A | 4,037 | I | By 401-K Plan |
| Old Second Bancorp, Inc. Common StockF3 | holding | — | — | — | 1,450 | I | Spouse's IRA | |
| Old Second Bancorp, Inc. Common StockF4 | holding | — | — | — | 48,054 | D | ||
| Restricted Stock Units | holding | — | — | — | 39,498 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1Of this total, 1 share was allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Employees Profit Sharing Plan and Trust. Information herein was provided by the Plan Trustee as of 6-30-26.
- F2Of this total, 14 shares were allocated during the second quarter pursuant to the Old Second Bancorp, Inc. Salary and Savings Plan. Information was provided herein by the Plan Trustee as of 6-30-26.
- F3These shares are held in spouse's IRA for which Mr. Pilmer is listed as a beneficiary.
- F4These shares are held in a brokerage account in Mr. Pilmer's name.