JONATHAN S. LEFF SEC EDGAR Filings (CIK 0001215242)

SEC EDGAR filings, ownership reports, and insider transactions for JONATHAN S. LEFF.

Business address
C/O Deerfield Management Company, L.P, 780 Third Avenue, 37 Th Floor, New York, NY, 10017
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JONATHAN S. LEFF has filed 130 SEC EDGAR filings since 26 Nov 2003

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 14 May 2025 13 May 2025 001-36510
4/A Open Document Open Filing 21 Apr 2025 14 Apr 2025 001-38762
4 Open Document Open Filing 18 Apr 2025 14 Apr 2025 001-38762
4 Open Document Open Filing 15 Jul 2024 11 Jul 2024 001-38762
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 31 May 2024 29 May 2024 001-36510
3 Open Document Open Filing 21 Mar 2024 15 Mar 2024 001-38762
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 11 May 2023 09 May 2023 001-36510
3 Open Document Open Filing FORM 3 SUBMISSION 10 Nov 2022 08 Nov 2022 001-39756
4 Open Document Open Filing STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 12 May 2022 10 May 2022 001-36510
4 Open Document Open Filing PRIMARY DOCUMENT 17 May 2021 12 May 2021 001-36510
4 Open Document Open Filing PRIMARY DOCUMENT 30 Sep 2020 29 Sep 2020 001-36510
3 Open Document Open Filing PRIMARY DOCUMENT 05 Jun 2020 28 May 2020 001-36510
4 Open Document Open Filing 12 Jun 2018 08 Jun 2018 001-36694
4 Open Document Open Filing OWNERSHIP DOCUMENT 04 Aug 2017 02 Aug 2017 001-36694
3 Open Document Open Filing OWNERSHIP DOCUMENT 04 Aug 2017 02 Aug 2017 001-36694
4 Open Document Open Filing FORM 4 SUBMISSION 12 Feb 2016 10 Feb 2016 001-37693
3 Open Document Open Filing FORM 3 SUBMISSION 10 Feb 2016 10 Feb 2016 001-37693
4 Open Document Open Filing 4 15 Sep 2015 11 Sep 2015 001-37449
4 Open Document Open Filing 4 20 Jul 2015 16 Jul 2015 001-37449
3 Open Document Open Filing 3 16 Jun 2015 16 Jun 2015 001-37449
4 Open Document Open Filing MAIN DOCUMENT DESCRIPTION 01 Mar 2013 28 Feb 2013 000-29801
4 Open Document Open Filing PRIMARY DOCUMENT 05 Sep 2012 04 Sep 2012 000-29815
4 Open Document Open Filing MAIN DOCUMENT DESCRIPTION 06 Jun 2012 04 Jun 2012 000-29801
4 Open Document Open Filing PRIMARY DOCUMENT 22 Feb 2012 17 Feb 2012 001-32626
4 Open Document Open Filing 4 10 Jan 2012 09 Jan 2012 001-32626
4 Open Document Open Filing PRIMARY DOCUMENT 15 Dec 2011 13 Dec 2011 000-29815
4 Open Document Open Filing PRIMARY DOCUMENT 23 Jun 2011 21 Jun 2011 000-29815
4 Open Document Open Filing 4 08 Jun 2011 07 Jun 2011 000-29801
4 Open Document Open Filing 16 May 2011 13 May 2011 001-31577
4 Open Document Open Filing FORM 4 13 May 2011 11 May 2011 000-29801
4 Open Document Open Filing MAIN DOCUMENT DESCRIPTION 12 May 2011 10 May 2011 000-29801
4 Open Document Open Filing PRIMARY DOCUMENT 05 Apr 2011 01 Apr 2011 001-32626
4 Open Document Open Filing 4 12 Oct 2010 07 Oct 2010 000-33489
4 Open Document Open Filing FORM 4 14 Sep 2010 10 Sep 2010 001-32626
4 Open Document Open Filing PRIMARY DOCUMENT 03 Aug 2010 30 Jul 2010 001-32626
4 Open Document Open Filing PRIMARY DOCUMENT 24 Jun 2010 22 Jun 2010 000-29815
4 Open Document Open Filing FORM 4 SUBMISSION 22 Jun 2010 17 Jun 2010 000-33489
3 Open Document Open Filing 16 Jun 2010 07 Jun 2010 001-32626
4 Open Document Open Filing 07 Jun 2010 03 Jun 2010 001-31577
4 Open Document Open Filing MAIN DOCUMENT DESCRIPTION 10 May 2010 10 May 2010 000-29801
4 Open Document Open Filing 27 Jan 2010 26 Jan 2010 000-29801