Old Second Bancorp Inc. filings document the regulatory disclosures of a Nasdaq-listed bank holding company and the parent of Old Second National Bank. Recent 8-K reports record quarterly results, loan portfolio disclosures, cash dividend declarations, earnings-call notices, capital actions and other material events affecting the company's banking operations and common stock.
The filing record also includes capital-structure disclosures such as common-share repurchase authorization and subordinated note redemption matters, including Federal Reserve non-objection references where applicable. Proxy materials provide annual governance disclosures, executive compensation information and equity-award data for the public company.
OLD SECOND BANCORP INC (OSBC) director Hugh H. McLean filed an amended insider report that removes a previously reported sale of 25,000 shares of Old Second Bancorp common stock. The broker reversed the sale on September 4, 2026 through its broker error account after determining that it had not timely filed the required Form 144, and McLean did not receive any proceeds.
The amendment deletes the prior sale entry and now reflects corrected holdings of 160,351 shares of Old Second Bancorp common stock and 10,595 Restricted Stock Units held directly. No transactions under a Rule 10b5-1 trading plan are reported.
OLD SECOND BANCORP INC (OSBC) director Hugh H. McLean has filed a notice under Rule 144 for a proposed sale of 25,000 shares of Old Second Bancorp common stock through UBS Financial Services Inc. The filing reports an aggregate market value of approximately $641,912.12 for these shares, with 50,875,716 shares of common stock outstanding.
OLD SECOND BANCORP INC (OSBC) director Hugh H. McLean reported selling 25,000 shares of Old Second Bancorp, Inc. common stock on September 3, 2026, at $25.727 per share in an open-market or private transaction. After this activity and an internal transfer of 3,077 shares to his brokerage account, he directly holds 135,351 common shares and 10,595 Restricted Stock Units.
OLD SECOND BANCORP INC (OSBC) director and officer Darin Patrick Campbell reported selling 24,000 shares of Old Second Bancorp, Inc. common stock on September 2, 2026 in an open-market or private sale at a weighted average price of $25.533 per share, with individual sale prices ranging from $25.50 to $25.60. After this sale, he directly held 250,589 shares of common stock and 10,562 shares of restricted stock. No Rule 10b5-1 trading plan is reported for this sale.
OLD SECOND BANCORP INC (OSBC) director Darin Patrick Campbell has filed a notice under Rule 144 indicating an intention to sell up to 24,000 shares of common stock through Charles Schwab. The planned sale has an aggregate market value of $615,360, based on recent prices, and is targeted for September 2, 2026 on Nasdaq.
The filing states that Campbell acquired 309,680 common shares on July 1, 2025 via a corporate action from the issuer in connection with a company acquisition. Shares of OLD SECOND BANCORP INC outstanding are listed as 50,875,716, providing context for the size of the planned sale.
Old Second Bancorp, Inc. (OSBC) has filed an automatic shelf registration on Form S-3 to offer, from time to time after effectiveness, an indeterminate aggregate offering price of common stock, preferred stock, debt securities, warrants, depositary shares, subscription rights, stock purchase contracts, stock purchase units and units. The registration uses a “pay-as-you-go” fee method under Rules 456(b) and 457(r), and allows offerings on a continuous or delayed basis, typically via prospectus supplements that will set specific terms and prices.
Old Second is a Delaware bank holding company for Old Second National Bank, operating 59 banking centers in several Illinois counties and providing full-service commercial, consumer, mortgage, electronic banking and wealth management services. As of June 30, 2026, it reported $6.9 billion in consolidated total assets, $5.2 billion in net loans, $5.4 billion in deposits and $902.8 million in stockholders’ equity. Its common stock trades on the NASDAQ Global Select Market under the symbol OSBC, with a last reported sale price of $25.83 on August 17, 2026. Unless a supplement specifies otherwise, net proceeds from any future offerings will be used for general corporate purposes, including subsidiary investments, working capital, capital expenditures, stock repurchases, debt repayment and potential acquisitions.
Old Second Bancorp, Inc. director and Chairman/CEO James Eccher reported a sale of 19,313 shares of common stock on August 12, 2026 in an open-market transaction under a Rule 10b5-1 trading plan adopted on May 1, 2026. The weighted average sale price was $25.6149 per share, with individual trades between $25.48 and $25.79. Following this sale, Eccher directly holds 303,399 shares, including 303,251 shares in a brokerage account and 148 shares held jointly with his spouse.
Old Second Bancorp, Inc. Chairman and CEO James Eccher reported selling 55,687 shares of common stock on August 11, 2026 at a weighted average price of $25.4595 per share, with trades ranging from $25.30 to $25.6050. The sales were effected under a Rule 10b5-1 trading plan adopted on May 1, 2026. Following the sale, he reported 322,712 directly held shares, additional indirect holdings of 33,498 shares via a 401(k) and 6,378 via a profit-sharing plan, and 188,252 Restricted Stock Units.
OLD SECOND BANCORP INC director Billy J. Lyons Jr. reported an acquisition of 20 shares of Old Second Bancorp, Inc. common stock on 2026-08-10 as a grant or award at $25.38 per share, bringing his direct common stock holdings to 20,117 shares. A footnote states this total includes 8,687 shares held with a broker and 11,430 shares held in his name outright. He also reports a direct holding of 10,595 Restricted Stock Units, which are tracked separately from the common shares.