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Leadership changes · SIEB · SEC Form 8-K, Item 5.02

Leadership changes at Siebert Financial Corp (2026)

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Who joined and who left Siebert Financial Corp (SIEB)? 1 appointment reported from 2026-09-25 to 2026-11-04, each cited to the company's own filing.

As of November 6, 2026, Siebert Financial Corp has reported 2 leadership change filings to the SEC under Item 5.02 of Form 8-K, from September 25, 2026 to November 4, 2026, naming 1 appointment. The latest filing names John M. Gebbia, appointed (Form 8-K, November 4, 2026).

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Changes2
In (appointed)1
Latest filing2026-11-04

Siebert Financial Corp reported changes in 2 filings among its directors and officers to the SEC on Form 8-K, Item 5.02, from 2026-09-25 to 2026-11-04. They name 1 person. Every row below is cited to the filing it comes from, and this page adds each new change as Siebert Financial Corp files it.

Also on the record for Siebert Financial Corp

DateRecordFigureOur pageSource
August 28, 2026Stake report, Schedule 13D/A, by Gloria E. Gebbia42% of the class5%+ stakesSource
January 22, 2026Stake report, Schedule 13D/A, by Gloria E. Gebbia42% of the class5%+ stakesSource
November 24, 2025Stake report, Schedule 13D/A, by Gloria E. Gebbia42% of the class5%+ stakesSource

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Timeline

FiledIn / outPersonRoleEffectiveSource
2026-11-04Reportednot named in the filing8-K, 2026-11-04
2026-09-25In8-K, 2026-09-25
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Every change, in the filing's words

Filed 2026-11-04 · 8-K

Reported

On November 3, 2026, the Board of Directors (the "Board") of Siebert Financial Corp. (the "Company") appointed Richard S. Gebbia and David J. Gebbia as Co-Chief Executive Officers ("Co-CEO") of the Company effective November 4, 2026.

Also stated in this filing

  • John J. Gebbia will continue to serve as the Company's Chief Executive Officer ("CEO") until November 4, 2026, on which date he will step away from the CEO position and continue to serve as the Chairman on the Company's Board.
  • Richard S. Gebbia, age 59, has more than 30 years of experience in the securities and brokerage industry.
  • Since entering the industry in 1993, Mr. Richard S. Gebbia has held various leadership and executive positions.
  • From 2007 to 2020, he served in multiple capacities including as Chief Executive Officer and a member of its Board of Directors with StockCross Financial Services, Inc. ("StockCross"), until StockCross was merged with and into Muriel Siebert & Co., LLC, a wholly owned subsidiary of the Company.
  • David J. Gebbia, age 59, has more than 30 years of experience in the securities and brokerage industry.
  • Since entering the industry in 1993, Mr. David J. Gebbia has held a variety of leadership and management positions.
  • He currently serves as President of the Company's insurance subsidiary, Park Wilshire Companies, Inc. and its entertainment and sports subsidiary, Gebbia Holdings, LLC.
  • Richard S. Gebbia and David J. Gebbia are the sons of John J. Gebbia, the Company's current CEO and Chairman of the Board of Directors.
Filed 2026-09-25 · 8-K

Appointed: John M. Gebbia

On September 22, 2026, the Board of Directors appointed John M. Gebbia to fill the vacancy resulting from Ms. Gebbia's resignation.

Also stated in this filing

  • On September 22, 2026, Gloria E. Gebbia, resigned from Siebert Financial Corp.'s (the "Company") Board of Directors (the "Board") to focus on public relations and philanthropic endeavors.
  • Ms. Gebbia's resignation from the Board was not due to any disagreement with the Company, and the Company extends its gratitude and appreciation to Ms. Gebbia for her contributions to the Company.
  • Mr. John M. Gebbia has served as Co-Chief Executive Officer of Muriel Siebert & Co., LLC, a subsidiary of the Company, and has been active in the brokerage industry in various capacities since 1990.
  • Mr. John M. Gebbia's compensation for service on the Board will be consistent with the Company's other employee directors as disclosed in the Company's Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the Securities and Exchange Commission on March 30, 2026 (the "Form 10-K").
  • Any related party transactions between Mr. John M. Gebbia and the Company are disclosed in the Form 10-K.

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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.

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Cite this page

Permanent URL: https://mentionfox.com/executive-changes/siebert-financial
Last updated 2026-11-06
Primary record: SEC filing 1 · SEC filing 2 · SEC filing 3 · SEC filing 4
Who joined Siebert Financial Corp? Leadership changes (2026). MentionFox, 2026-11-06. https://mentionfox.com/executive-changes/siebert-financial