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Private company

683 Capital Management, LLC

Limited liability company registered in the United States, active since 2006. Summary from the record

Last updated Oct 21, 2026.

Overview

  • HeadquartersWilmington, United States2
  • Legal formLimited Liability Company2
  • LEI6H8P3MPVST1J15UNVO872
  • StatusActive2
  • LEI statusIssued and current2
  • Registered addressC/O THE CORPORATION TRUST COMPANY, 19801 Wilmington, United States2
  • Registered withDivision of Corporations, Department of State, 41549512

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Corporate structure

683 Capital Management, LLC sits at the top of its group. 53 entities, 4 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Major holders of 683 Capital Management, LLC

  • Ari Jonathan Zweiman Owns 50% to 75% of 683 Capital Management, LLC, since 05/2006 (Form ADV)
  • Joseph S Patt Owns 25% to 50% of 683 Capital Management, LLC, since 11/2011 (Form ADV)

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); stakes of 5% or more it reported on Schedules 13D and 13G (50 companies); owners and owned firms from Form ADV, the registration investment advisers file with the SEC. Each entity in the chart links to its source.

Investment adviser

683 Capital Management, LLC is registered with the SEC as an investment adviser. This is what it reports on Form ADV, the registration every adviser files and keeps current.

  • Assets it manages$2.4B4 2 accounts, all with discretion
  • Employees10 5 in investment advice or research
  • ClientsPooled investment vehicles (other than investment companies and: 2 ($2.4B)
  • How it is paidA percentage of assets under its management; Performance-based fees
  • What it doesPortfolio management for pooled investment vehicles (other than investment companies)
  • Holds client assetsNo
  • RegistrationSEC 801-73162, CRD 156181 IAPD record

Who owns it

Owners of 5% or more as the firm lists them (Schedule A), and the owners of those owners up the chain (Schedule B).

  • Ari Jonathan Zweimanowns 50% to 75%, since 05/2006
  • Joseph S Pattowns 25% to 50%, since 11/2011

Disciplinary record

The firm answered yes to 1 of the disciplinary questions on Form ADV (Item 11). A yes can concern the firm itself or an affiliate.

  • Any domestic or foreign court has Are the firm or an advisory affiliate now the subject of any civil proceeding that could result in a "yes" answer to any part of Item 11.H.(1)? [ ] [ ].

Subsidiaries and ownership

Funds it manages

Ownership links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); each one cites its LEI record.

Timeline

  1. May 8, 2006Founded 683 Capital Management, LLC is founded2

Filings

23 filings to the SEC since October 2021: 23 other. The latest 20:

  1. Aug 31, 2026N-PX EDGAR
  2. Aug 14, 202613F-HR EDGAR
  3. May 15, 202613F-HR EDGAR
  4. Feb 17, 202613F-HR EDGAR
  5. Nov 14, 202513F-HR EDGAR
  6. Aug 29, 2025N-PX EDGAR
  7. Aug 14, 202513F-HR EDGAR
  8. May 15, 202513F-HR EDGAR
  9. Feb 14, 202513F-HR EDGAR
  10. Nov 14, 202413F-HR EDGAR
  11. Aug 30, 2024N-PX EDGAR
  12. Aug 14, 202413F-HR EDGAR
  13. May 15, 202413F-HR EDGAR
  14. Feb 14, 202413F-HR EDGAR
  15. Nov 14, 202313F-HR EDGAR
  16. Aug 14, 202313F-HR EDGAR
  17. May 15, 202313F-HR EDGAR
  18. Feb 14, 202313F-HR EDGAR
  19. Nov 14, 202213F-HR EDGAR
  20. Aug 15, 202213F-HR EDGAR

The 23 filings since October 2021 can be filtered by form type and year here when JavaScript is on.

Every filing from the last five years, summarized. The full record is on SEC EDGAR.

Stakes it holds

683 Capital Management, LLC has told the SEC it owns more than 5% of 50 companies, latest first (Schedules 13D and 13G).

All 50 companies

Sources

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