As of November 6, 2026, Old Second Bancorp Inc has reported 3 leadership change filings to the SEC under Item 5.02 of Form 8-K, from June 9, 2026 to October 19, 2026, naming 4 departures. The latest filing names Gary Collins, leaving (Form 8-K, October 19, 2026).
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Key facts
- · In / out: Out · Person: Gary Collins · Effective: 2026-10-31 · 8-K, 2026-10-19
- · In / out: Out · Person: John Williams · Role: Director · Effective: 2026-07-07 · 8-K, 2026-07-08
- · In / out: Out · Person: Dennis Klaeser · Role: Director · 8-K, 2026-06-09
Old Second Bancorp Inc reported changes in 3 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-06-09 to 2026-10-19. They name 3 people. Every row below is cited to the filing it comes from, and this page adds each new change as Old Second Bancorp Inc files it.
Also on the record for Old Second Bancorp Inc
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 30, 2026 | Stake report, Schedule 13G, by Vanguard Capital Management | 5.03% of the class | 5%+ stakes | Source |
| October 8, 2026 | Stake report, Schedule 13G, by Dimensional Fund Advisors LP | 5.1% of the class | 5%+ stakes | Source |
| March 27, 2026 | Stake report, Schedule 13G/A, by The Vanguard Group | — | 5%+ stakes | Source |
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More on Old Second Bancorp Inc and the records around it.
Old Second Bancorp Inc elsewhere on the record
Companies that share a holder
- Dimensional Fund Advisors LP also filed stake reports on 366 other companies: Acadia Healthcare Co Inc (Oct 2026), ADT Inc (Oct 2026), AGCO Corp (Oct 2026)
- Vanguard Capital Management also filed stake reports on 1495 other companies: A10 Networks Inc (Oct 2026), Altisource Portfolio Solutions SA (Oct 2026), Alto Neuroscience Inc (Oct 2026)
- The Vanguard Group also filed stake reports on 2384 other companies: BellRing Brands, Inc. (Sep 2026), CAL-MAINE FOODS INC (Sep 2026), FTAI Aviation Ltd. (Sep 2026)
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Timeline
| Filed | In / out | Person | Role | Effective | Source |
|---|---|---|---|---|---|
| 2026-10-19 | Out | 2026-10-31 | 8-K, 2026-10-19 | ||
| 2026-10-19 | Out | Director | 8-K, 2026-10-19 | ||
| 2026-07-08 | Out | Director | 2026-07-07 | 8-K, 2026-07-08 | |
| 2026-06-09 | Out | Director | 8-K, 2026-06-09 |
Who leads Old Second Bancorp Inc, as last reported?
For each role that changed in the filings below, the most recent change reported. A role that did not change in these filings is not listed.
- Director: Gary Collins, departure reported (filed 2026-10-19). No successor is named in these filings.
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Departing: Gary Collins, effective 2026-10-31
On October 14, 2026, Gary Collins, Vice Chairman of Old Second Bancorp, Inc. (the "Company") and Old Second National Bank (the "Bank"), notified the Company of his decision to retire from his employment with the Company and the Bank, effective October 31, 2026.
Departing: Gary Collins, Director
Mr. Collins also notified the Company that he will resign from the boards of directors of the Company and the Bank, effective the date of his termination of employment.
- Mr. Collins' decision to retire was not the result of any disagreement with the Company or the Bank on any matter relating to the Company's or the Bank's operations, policies or practices.
- The Company and the Bank thank Mr. Collins for his years of dedicated service and his many contributions.
- In connection with Mr. Collins' departure, the Company and Mr. Collins entered into a Separation and General Release Agreement (the "Separation Agreement").
- Subject to Mr. Collins' execution and non-revocation of a release of claims in favor of the Company and the Bank, Mr. Collins will receive lump sum cash payments totaling approximately $211,150, full vesting of his outstanding unvested time-based restricted stock units and pro-rata vesting, based on target, of his outstanding performance-based restricted stock units, and limited benefit continuation.
- The restrictive covenants in Mr. Collins' Executive Employment Agreement with the Company will continue to apply.
Departing: John Williams, Director, effective 2026-07-07
Effective July 7, 2026, John Williams, Jr., a member of the Board of Directors (the "Board") of Old Second Bancorp, Inc. (the "Company"), resigned from the Board.
- Mr. Williams, Jr. submitted his resignation in accordance with the Company's Director Resignation Policy, which requires that any person serving as a director submit his or her resignation as a director upon attaining the age of 73 during his or her tenure.
- As such, Mr. Williams, Jr.'s resignation is not the result of any disagreement with the Company.
- Mr. Williams, Jr. served on the Risk and Insurance Committee.
- He has been a valuable Board member since 2021, and the Company appreciates his contributions during his tenure.
- The Company does not anticipate immediately filling the vacancy on the Board caused by Mr. Williams, Jr.'s resignation and will reduce the size of the Board by one member.
- Following a recommendation from the Nominating and Corporate Governance Committee, the Board's intent is to maintain the Board classes to be as nearly equal in number as possible.
- Forward looking statements generally include words such as "expects," "anticipates," "intends," "estimates," and other similar expressions.
- The Company cautions readers that forward looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from anticipated results.
Departing: Dennis Klaeser, Director
On June 5, 2026, Dennis Klaeser, a member of the Board of Directors (the "Board") of Old Second Bancorp, Inc. ("Old Second") and the Board of Directors (the "Bank Board") of its subsidiary bank, Old Second National Bank, notified Old Second of his resignation from the Board and Bank Board.
- Mr. Klaeser stated in his resignation letter that "I am honored to have served on the board of the company over the past 5 years as it has grown and developed into the bank it is today." James E. Eccher, Chairman and Chief Executive Officer of Old Second, stated, "we are grateful to Dennis and his service to Old Second, and we wish him well in his future endeavors." Mr. Klaeser's resignation was effective immediately and is not the result of any disagreement with Old Second.
- Mr. Klaeser served on the Executive Committee, the Audit Committee, the Compensation Committee, the Risk Committee and the Capital Committee.
- He has been a Board member since 2021, and Old Second appreciates his contributions during his tenure.
- Mr. Klaeser served as a Class II director with a term expiring at the Old Second's 2027 annual meeting.
- Old Second does not anticipate immediately filling the vacancy on the Board caused by Mr. Klaeser's resignation and will reduce the size of the Board by one member.
- Forward looking statements generally include words such as "expects," "anticipates," "intends," "estimates," and other similar expressions.
- Old Second cautions readers that forward looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from anticipated results.
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Where this comes from
A public company must file a current report on Form 8-K with the SEC within four business days when a director leaves or is elected, or when its chief executive, chief financial, chief accounting or chief operating officer, or another named executive, departs or is appointed. That disclosure goes under Item 5.02 of the report.
Every change on this page is taken from one of those filings and quoted in the company's own words, with a link to the filing, so it can be checked at the source. Where a filing names the person, the role and the date a change takes effect, they are shown beside the quote. Where it does not, the quote stands on its own. A filing states what changed; it rarely states why, and neither does this page.