Every Form 4 that Old Second Bancorp Inc (OSBC) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow OSBC and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full OSBC filings page.
Old Second Bancorp executive Darin Patrick Campbell reported an open-market sale of company stock. On the reported date, he sold 35,000 shares of Old Second Bancorp, Inc. common stock at a price of $20.94 per share. After this transaction, he held 274,589 shares directly. The filing also updates his indirect IRA holdings to zero, correcting a prior Form 4 that had mistakenly continued to show 31,159 IRA shares even though they were disposed of on October 31, 2025.
Old Second Bancorp Inc. director and officer Darin Patrick Campbell reported an open-market sale of 91 shares of Old Second Bancorp common stock at $20.70 per share. After this sale, he directly owned 309,589 shares and indirectly held 31,159 shares through an IRA.
Old Second Bancorp director Billy J. Lyons Jr. reported acquiring 23 shares of Old Second Bancorp, Inc. common stock on 02/09/2026 at a price of $21.21 per share. After this transaction, he directly owns 16,996 common shares and holds 10,551 restricted stock units, all reported as direct ownership.
Old Second Bancorp executive vice president Richard A. Gartelmann, Jr. reported selling 2,000 shares of Old Second Bancorp, Inc. common stock on February 5, 2026 at a price of $20.975 per share. After this sale, he directly owns 24,874 common shares, plus 12,563 shares held indirectly through a 401(k) plan and 20,552 restricted stock units.
Old Second Bancorp director John Ladowicz reported sales of Old Second Bancorp, Inc. common stock on January 15, 2026. Two transactions were reported from IRA accounts: one sale of 2,897 shares at $20.941 per share and another sale of 1,865 shares at $20.96 per share.
After these sales, the filing shows IRA holdings of 146,757 shares and 144,892 shares, reported as indirectly owned, and an additional 36,121 shares reported as directly owned. Ladowicz is identified in the filing as a director of Old Second Bancorp.
Old Second Bancorp, Inc. (OSBC) director Mr. Ladowicz reported recent changes in his ownership of the company’s common stock. On 11/26/2025, he sold 13,150 shares of Old Second Bancorp common stock from an IRA at a price of $19.0107 per share, reported as an indirect holding.
The filing also shows that 10,551 restricted stock units were disposed of at $0 on 09/14/2025, tied to units that vested automatically upon his retirement on that date. After these transactions, he beneficially owns 162,154 shares indirectly through IRA accounts and 36,121 shares directly, including shares from the vested restricted stock units.
Old Second Bancorp (OSBC) reported a Form 4 showing a director acquired company stock. On 11/10/2025, the insider reported acquiring 27 shares of common stock at $18.35 per share. Following this transaction, the filing lists 16,973 shares of common stock held directly. The form also shows 10,551 Restricted Stock Units reported as directly held.
Old Second Bancorp (OSBC) insider filed a Form 4 reporting two open‑market sales from an IRA. The officer/director sold 26,406 shares at $18.2659 on 10/30/2025 and 31,159 shares at $17.8861 on 10/31/2025. Following these transactions, the IRA held 0 shares, while the reporting person held 309,680 shares directly. The reporting person is listed as a Director and as an Officer (President, Powersports Lending).