James Eccher, chief executive officer of Old Second Bancorp Inc. (NASDAQ: $OSBC), sold 55,687 shares in an open-market transaction on August 11, 2026. The shares traded at $25.4595 each, producing a total value of $1,417,763. A Form 4 filed with the SEC on August 12, one day after the transaction date, listed 322,712 shares still held by Eccher after the sale.
The August 11 sale was the only trade attributed to Eccher in the $OSBC filing history in the InsiderTradingTracker database, so no earlier Form 4 sales or purchases by the CEO appear in the record for the ticker. The transaction was also the largest single reported trade in the returned filing history by dollar value, and its $25.4595 per-share price was the highest figure in that record. Earlier open-market sales reported in 2026 executed at prices between roughly $19.38 and $21.24, while the two director purchases on file occurred at $20.90 and $16.61. The filing history reviewed covered open-market transactions reported from August 2025 through August 2026.
Other $OSBC insiders reported open-market sales earlier in 2026. Vice Chairman Gary S Collins sold shares across March and May. His five reported transactions included 22,154 shares at $19.3841 on March 20 for $429,435, 10,000 shares at $21.24 on May 8 for $212,400, 5,000 shares at $21.225 on May 8 for $106,125, 10,000 shares at $21.12 on May 21 for $211,200, and 5,120 shares at $21.12 on May 22 for $108,134. In total, Collins sold 52,274 shares for roughly $1.07 million.
President Campbell Darin Patrick sold 35,000 shares at $20.94 on February 18, 2026, for $732,900, and 91 shares at $20.70 on February 13 for $1,884. Patrick also reported sales in October 2025, including 31,159 shares at $17.8861 on October 31 for $557,313 and 26,406 shares at $18.2659 on October 30 for $482,329. Across those four reported transactions, Patrick sold 92,656 shares. VP Donald Pilmer sold 25,000 shares at $20.7518 on May 11, 2026, for $518,795.
The record also contained smaller open-market purchases. Director Billy J Lyons Jr. bought 24 shares at $20.90 on May 11, 2026, for $501.60, and 25 shares at $16.61 on August 4, 2025, for $415.25. Those two transactions were the only open-market purchases in the returned record. No congressional STOCK Act disclosure for $OSBC appeared in the database for the period reviewed.
Old Second Bancorp operates in the banking sector and carried a market capitalization of roughly $1.33 billion at the time of review. The August 11 sale left Eccher with a reported direct position of 322,712 shares, according to the Form 4 filed the following day.