DEERFIELD MANAGEMENT COMPANY, L.P. SEC EDGAR Filings (CIK 0001009258)

SEC EDGAR filings, ownership reports, and insider transactions for DEERFIELD MANAGEMENT COMPANY, L.P..

Business address
345 Park Avenue South, 12 Th Floor, New York, NY, 10010
Top holdings (ownership)
DALS
Top securities (13F)
NUVL, BROOKDALE SR LIVING INC, COGT, PRAX, CNC, VTRS, RVMD, UTHR, VERA, MIRUM PHARMACEUTICALS INC, CELC, NBIX, IONS, NAMS, INSP, LEGN, BKD, INDV, ARWR, and LRMR
State of incorporation
DE
Fiscal year end
31 December
Former names
DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C) (to 01 Jul 2025), DEERFIELD MANAGEMENT CO (to 04 Dec 2017), DEERFIELD MANAGEMENT CO /NY (to 14 Aug 2013), DEERFIELD MANAGEMENT/NY (to 24 May 1996)
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DEERFIELD MANAGEMENT COMPANY, L.P. has filed 576 SEC EDGAR filings since 24 May 1996

Latest Filings

Recent SEC filings for DEERFIELD MANAGEMENT COMPANY, L.P. including 4, 13F-HR, N-PX and more.

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open 4 document View SEC filing for 4 02 Mar 2026 27 Feb 2026 001-36510
13F-HR Open 13F-HR document View SEC filing for 13F-HR 17 Feb 2026 31 Dec 2025 028-05366
4 Open 4 document View SEC filing for 4 24 Nov 2025 24 Nov 2025 001-40671
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2025 30 Sep 2025 028-05366
N-PX Open N-PX document View SEC filing for N-PX 25 Aug 2025 30 Jun 2025 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2025 30 Jun 2025 028-05366
4 Open 4 document View SEC filing for 4 04 Aug 2025 31 Jul 2025 001-36510
4 Open 4 document View SEC filing for 4 01 Jul 2025 27 Jun 2025 001-39756
4 Open 4 document View SEC filing for 4 20 Jun 2025 18 Jun 2025 001-40671
4 Open 4 document View SEC filing for 4 15 May 2025 13 May 2025 001-36510
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2025 31 Mar 2025 028-05366
4 Open 4 document View SEC filing for 4 23 Apr 2025 21 Apr 2025 001-38762
4 Open 4 document View SEC filing for 4 18 Apr 2025 14 Apr 2025 001-38762
4 Open 4 document View SEC filing for 4 03 Mar 2025 27 Feb 2025 001-38762
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2025 31 Dec 2024 028-05366
4 Open 4 document View SEC filing for 4 4 28 Jan 2025 27 Jan 2025 001-39430
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2024 30 Sep 2024 028-05366
4 Open 4 document View SEC filing for 4 13 Nov 2024 11 Nov 2024 001-39756
4 Open 4 document View SEC filing for 4 24 Oct 2024 22 Oct 2024 001-40671
4 Open 4 document View SEC filing for 4 17 Sep 2024 17 Sep 2024 001-42271
3 Open 3 document View SEC filing for 3 12 Sep 2024 12 Sep 2024 001-42271
N-PX Open N-PX document View SEC filing for N-PX 29 Aug 2024 30 Jun 2024 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2024 30 Jun 2024 028-05366
4 Open 4 document View SEC filing for 4 17 Jul 2024 15 Jul 2024 001-38762
4 Open 4 document View SEC filing for 4 15 Jul 2024 11 Jul 2024 001-38762
4 Open 4 document View SEC filing for 4 11 Jul 2024 09 Jul 2024 001-38762
4 Open 4 document View SEC filing for 4 14 Jun 2024 12 Jun 2024 001-40671
4 Open 4 document View SEC filing for 4 03 Jun 2024 29 May 2024 001-36510
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2024 31 Mar 2024 028-05366
4 Open 4 document View SEC filing for 4 19 Mar 2024 15 Mar 2024 001-38762
3 Open 3 document View SEC filing for 3 19 Mar 2024 15 Mar 2024 001-38762
4 Open 4 document View SEC filing for 4 12 Mar 2024 08 Mar 2024 001-38399
3 Open 3 document View SEC filing for 3 08 Mar 2024 27 Feb 2024 001-38399
4 Open 4 document View SEC filing for 4 16 Feb 2024 16 Feb 2024 001-36510
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2024 31 Dec 2023 028-05366
4 Open 4 document View SEC filing for 4 08 Feb 2024 06 Feb 2024 001-41942
3 Open 3 document View SEC filing for 3 01 Feb 2024 01 Feb 2024 001-41942
4 Open 4 document View SEC filing for 4 21 Nov 2023 17 Nov 2023 001-39391
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2023 30 Sep 2023 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2023 30 Jun 2023 028-05366
4 Open 4 document View SEC filing for 4 01 Aug 2023 28 Jul 2023 001-40676
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 01 Aug 2023
4 Open 4 document View SEC filing for 4 20 Jun 2023 16 Jun 2022 001-39430
4 Open 4 document View SEC filing for 4 16 Jun 2023 15 Jun 2023 001-40671
4 Open 4 document View SEC filing for 4 12 Jun 2023 08 Jun 2023 001-39391
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2023 31 Mar 2023 028-05366
4 Open 4 document View SEC filing for 4 11 May 2023 09 May 2023 001-36510
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 13 Mar 2023
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2023 31 Dec 2022 028-05366
4 Open 4 document View SEC filing for 4 30 Dec 2022 28 Dec 2022 001-39575
4 Open 4 document View SEC filing for 4 27 Dec 2022 22 Dec 2022 001-39575
4 Open 4 document View SEC filing for 4 21 Dec 2022 19 Dec 2022 001-39575
4 Open 4 document View SEC filing for 4 15 Dec 2022 13 Dec 2022 001-39575
4 Open 4 document View SEC filing for 4 21 Nov 2022 17 Nov 2022 001-39391
3 Open 3 document View SEC filing for 3 14 Nov 2022 08 Nov 2022 001-39765
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2022 30 Sep 2022 028-05366
3 Open 3 document View SEC filing for 3 10 Nov 2022 08 Nov 2022 001-39756
4 Open 4 document View SEC filing for 4 07 Nov 2022 03 Nov 2022 001-40671
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 07 Nov 2022
4 Open 4 document View SEC filing for 4 20 Sep 2022 16 Sep 2022 001-36510
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 Aug 2022 30 Jun 2022 028-05366
4 Open 4 document View SEC filing for 4 05 Jul 2022 30 Jun 2022 001-39430
4 Open 4 document View SEC filing for 4 21 Jun 2022 16 Jun 2022 001-40671
4 Open 4 document View SEC filing for 4 08 Jun 2022 06 Jun 2022 001-38981
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 02 Jun 2022
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 May 2022 31 Mar 2022 028-05366
4 Open 4 document View SEC filing for 4 11 May 2022 10 May 2022 001-36510
4 Open 4 document View SEC filing for 4 10 May 2022 10 May 2022 001-41374
3 Open 3 document View SEC filing for 3 05 May 2022 05 May 2022 001-41374
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 15 Feb 2022
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2022 31 Dec 2021 028-05366
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 28 Jan 2022
4 Open 4 document View SEC filing for 4 16 Nov 2021 12 Nov 2021 001-39248
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 Nov 2021 30 Sep 2021 028-05366
4 Open 4 document View SEC filing for 4 28 Oct 2021 26 Oct 2021 001-40925
3 Open 3 document View SEC filing for 3 21 Oct 2021 21 Oct 2021 001-40925
4 Open 4 document View SEC filing for 4 02 Sep 2021 17 Jun 2021 001-39430
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 Aug 2021 30 Jun 2021 028-05366
SC 13D Open SC 13D document View SEC filing for SC 13D SC 13D 10 Aug 2021
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 09 Aug 2021 05 Aug 2021 001-40676
4 Open 4 document View SEC filing for 4 04 Aug 2021 02 Aug 2021 001-40671
4 Open 4 document View SEC filing for 4 FORM 4 SUBMISSION 03 Aug 2021 30 Jul 2021 001-40676
4 Open 4 document View SEC filing for 4 30 Jul 2021 28 Jul 2021 001-40671
3 Open 3 document View SEC filing for 3 28 Jul 2021 28 Jul 2021 001-40671
3 Open 3 document View SEC filing for 3 FORM 3 SUBMISSION 27 Jul 2021 27 Jul 2021 001-40676
4 Open 4 document View SEC filing for 4 21 Jul 2021 19 Jul 2021 001-39430
4 Open 4 document View SEC filing for 4 13 Jul 2021 09 Jul 2021 001-38981
4 Open 4 document View SEC filing for 4 07 Jul 2021 02 Jul 2021 001-38981
4 Open 4 document View SEC filing for 4 02 Jul 2021 30 Jun 2021 001-36510
4 Open 4 document View SEC filing for 4 10 Jun 2021 08 Jun 2021 001-39391
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 10 Jun 2021
4 Open 4 document View SEC filing for 4 03 Jun 2021 01 Jun 2021 001-40443
3 Open 3 document View SEC filing for 3 26 May 2021 26 May 2021 001-40443
4 Open 4 document View SEC filing for 4 17 May 2021 12 May 2021 001-36510
13F-HR Open 13F-HR document View SEC filing for 13F-HR 17 May 2021 31 Mar 2021 028-05366
4 Open 4 document View SEC filing for 4 04 May 2021 04 May 2021 001-40366
3 Open 3 document View SEC filing for 3 29 Apr 2021 29 Apr 2021 001-40366
4 Open 4 document View SEC filing for 4 30 Mar 2021 30 Mar 2021 001-40236
3 Open 3 document View SEC filing for 3 25 Mar 2021 25 Mar 2021 001-40236
4 Open 4 document View SEC filing for 4 18 Feb 2021 17 Feb 2021 001-39575
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 Feb 2021 31 Dec 2020 028-05366
4 Open 4 document View SEC filing for 4 09 Feb 2021 09 Feb 2021 001-39926
3 Open 3 document View SEC filing for 3 04 Feb 2021 04 Feb 2020 001-39926
3 Open 3 document View SEC filing for 3 03 Feb 2021 01 Feb 2020 001-39951
4 Open 4 document View SEC filing for 4 08 Jan 2021 06 Jan 2021 001-35342
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A 30 Dec 2020 30 Sep 2020 028-05366
SC 13D/A Open SC 13D/A document View SEC filing for SC 13D/A 21 Dec 2020
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 Nov 2020 30 Sep 2020 028-05366
4 Open 4 document View SEC filing for 4 08 Oct 2020 06 Oct 2020 001-39575
3 Open 3 document View SEC filing for 3 01 Oct 2020 01 Oct 2020 001-39575
4 Open 4 document View SEC filing for 4 01 Oct 2020 29 Sep 2020 001-39538
4 Open 4 document View SEC filing for 4 01 Oct 2020 29 Sep 2020 001-36510
3 Open 3 document View SEC filing for 3 24 Sep 2020 24 Sep 2020 001-39538
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2020 30 Jun 2020 028-05366
4 Open 4 document View SEC filing for 4 12 Aug 2020 05 Aug 2020 001-39430
3 Open 3 document View SEC filing for 3 05 Aug 2020 05 Aug 2020 001-39430
SC 13D Open SC 13D document View SEC filing for SC 13D SC 13D 30 Jul 2020
4 Open 4 document View SEC filing for 4 28 Jul 2020 28 Jul 2020 001-39402
3 Open 3 document View SEC filing for 3 23 Jul 2020 23 Jul 2020 001-39402
4 Open 4 document View SEC filing for 4 4 22 Jul 2020 21 Jul 2020 001-39391
3 Open 3 document View SEC filing for 3 3 16 Jul 2020 16 Jul 2020 001-39391
4 Open 4 document View SEC filing for 4 14 Jul 2020 14 Jul 2020 001-39370
3 Open 3 document View SEC filing for 3 09 Jul 2020 09 Jul 2020 001-39370
4 Open 4 document View SEC filing for 4 16 Jun 2020 16 Jun 2020 001-39319
3 Open 3 document View SEC filing for 3 11 Jun 2020 11 Jun 2020 001-39319
3 Open 3 document View SEC filing for 3 08 Jun 2020 28 May 2020 001-36510
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2020 31 Mar 2020 028-05366
3 Open 3 document View SEC filing for 3 20 Mar 2020 18 Mar 2020 001-35342
4 Open 4 document View SEC filing for 4 17 Mar 2020 13 Mar 2020 001-39248
3 Open 3 document View SEC filing for 3 10 Mar 2020 10 Mar 2020 001-39248
4 Open 4 document View SEC filing for 4 18 Feb 2020 18 Feb 2020 001-39219
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2020 31 Dec 2019 028-05366
3 Open 3 document View SEC filing for 3 12 Feb 2020 12 Feb 2020 001-39219
4 Open 4 document View SEC filing for 4 10 Feb 2020 10 Feb 2020 001-39206
3 Open 3 document View SEC filing for 3 05 Feb 2020 05 Feb 2020 001-39206
4 Open 4 document View SEC filing for 4 03 Feb 2020 03 Feb 2020 001-39200
4 Open 4 document View SEC filing for 4 31 Jan 2020 29 Jan 2020 001-38433
3 Open 3 document View SEC filing for 3 29 Jan 2020 29 Jan 2020 001-39200
4 Open 4 document View SEC filing for 4 28 Jan 2020 24 Jan 2020 001-38433
4 Open 4 document View SEC filing for 4 27 Dec 2019 24 Dec 2019 001-38433
4 Open 4 document View SEC filing for 4 23 Dec 2019 19 Dec 2019 001-38433
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2019 30 Sep 2019 028-05366
4 Open 4 document View SEC filing for 4 13 Nov 2019 08 Nov 2019 001-38399
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 30 Oct 2019 24 Oct 2019 001-39103
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 24 Oct 2019 24 Oct 2019 001-39103
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 07 Oct 2019 07 Oct 2019 001-39062
3 Open 3 document View SEC filing for 3 02 Oct 2019 02 Oct 2019 001-39062
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2019 30 Jun 2019 028-05366
4 Open 4 document View SEC filing for 4 24 Jul 2019 22 Jul 2019 001-38981
3 Open 3 document View SEC filing for 3 17 Jul 2019 17 Jul 2019 001-38981
4 Open 4 document View SEC filing for 4 01 Jul 2019 27 Jun 2019 001-37581
4 Open 4 document View SEC filing for 4 26 Jun 2019 26 Jun 2019 001-37581
4 Open 4 document View SEC filing for 4 25 Jun 2019 21 Jun 2019 001-37581
4 Open 4 document View SEC filing for 4 11 Jun 2019 06 Jun 2019 001-38433
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2019 31 Mar 2019 028-05366
4 Open 4 document View SEC filing for 4 13 May 2019 09 May 2019 001-37581
4 Open 4 document View SEC filing for 4 15 Apr 2019 12 Apr 2019 001-38433
4 Open 4 document View SEC filing for 4 11 Mar 2019 11 Mar 2019 001-38829
3 Open 3 document View SEC filing for 3 06 Mar 2019 06 Mar 2019 001-38829
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2019 31 Dec 2018 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 12 Feb 2019 08 Feb 2019 001-38536
4 Open 4 document View SEC filing for 4 07 Feb 2019 05 Feb 2019 001-38536
4 Open 4 document View SEC filing for 4 30 Jan 2019 28 Jan 2019 001-38536
4 Open 4 document View SEC filing for 4 25 Jan 2019 23 Jan 2019 001-38536
4 Open 4 document View SEC filing for 4 18 Jan 2019 11 Jan 2019 001-37581
4 Open 4 document View SEC filing for 4 02 Jan 2019 28 Dec 2018 001-37581
4 Open 4 document View SEC filing for 4 27 Dec 2018 24 Dec 2018 001-37581
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 21 Dec 2018 19 Dec 2018 001-37581
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2018 30 Sep 2018 028-05366
3 Open 3 document View SEC filing for 3 24 Oct 2018 22 Oct 2018 001-37581
4 Open 4 document View SEC filing for 4 01 Oct 2018 01 Oct 2018 001-38672
3 Open 3 document View SEC filing for 3 26 Sep 2018 26 Sep 2018 001-38672
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2018 30 Jun 2018 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 23 Jul 2018 23 Jul 2018 001-36152
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 23 Jul 2018 23 Jul 2018 001-36152
4 Open 4 document View SEC filing for 4 23 Jul 2018 23 Jul 2018 001-38584
3 Open 3 document View SEC filing for 3 18 Jul 2018 18 Jul 2018 001-38584
4 Open 4 document View SEC filing for 4 27 Jun 2018 25 Jun 2018 001-38536
4 Open 4 document View SEC filing for 4 25 Jun 2018 25 Jun 2018 001-37977
3 Open 3 document View SEC filing for 3 20 Jun 2018 20 Jun 2018 001-38536
4 Open 4 document View SEC filing for 4 12 Jun 2018 08 Jun 2018 001-36694
4 Open 4 document View SEC filing for 4 31 May 2018 29 May 2018 001-38492
3 Open 3 document View SEC filing for 3 23 May 2018 23 May 2018 001-38492
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2018 31 Mar 2018 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 10 May 2018 09 May 2018 001-35803
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 10 May 2018 08 May 2018 001-35803
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 04 May 2018 30 Apr 2018 001-37977
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 04 Apr 2018 02 Apr 2018 001-38433
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 04 Apr 2018 02 Apr 2018 001-38399
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 29 Mar 2018 27 Mar 2018 001-38433
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 27 Mar 2018 27 Mar 2018 001-38433
4/A Open 4/A document View SEC filing for 4/A OWNERSHIP DOCUMENT 21 Mar 2018 06 Mar 2018 000-51173
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 08 Mar 2018 06 Mar 2018 000-51173
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 23 Feb 2018 21 Feb 2018 001-38399
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 15 Feb 2018 15 Feb 2018 000-51173
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 15 Feb 2018 15 Feb 2018 001-38399
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2018 31 Dec 2017 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 04 Dec 2017 30 Nov 2017 001-36694
13F-HR Open 13F-HR document View SEC filing for 13F-HR 13 Nov 2017 30 Sep 2017 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 10 Oct 2017 10 Oct 2017 001-38223
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 04 Oct 2017 04 Oct 2017 001-38223
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2017 30 Jun 2017 028-05366
4 Open 4 document | Open XBRL data View SEC filing for 4 OWNERSHIP DOCUMENT 04 Aug 2017 02 Aug 2017 001-36694
3 Open 3 document | Open XBRL data View SEC filing for 3 OWNERSHIP DOCUMENT 04 Aug 2017 02 Aug 2017 001-36694
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 14 Jun 2017 12 Jun 2017 001-36329
4 Open 4 document View SEC filing for 4 09 Jun 2017 07 Jun 2017 001-36329
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2017 31 Mar 2017 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 27 Apr 2017 26 Apr 2017 001-33071
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 17 Apr 2017 13 Apr 2017 001-33071
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 11 Apr 2017 07 Apr 2017 001-33071
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2017 31 Dec 2016 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 26 Jan 2017 24 Jan 2017 000-13839
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 23 Jan 2017 19 Jan 2017 000-13839
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 16 Dec 2016 16 Dec 2016 001-36329
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 14 Dec 2016 12 Dec 2016 001-37417
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2016 30 Sep 2016 028-05366
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 10 Nov 2016 10 Nov 2016 001-37417
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 26 Sep 2016 22 Sep 2016 001-34186
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 19 Sep 2016 15 Sep 2016 001-34186
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 14 Sep 2016 12 Sep 2016 001-37449
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 Aug 2016 30 Jun 2016 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 01 Aug 2016 20 Jul 2016 001-36510
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 25 Jul 2016 25 Jul 2016 001-37833
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 21 Jul 2016 21 Jul 2016 001-36046
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 19 Jul 2016 19 Jul 2016 001-37833
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 18 Jul 2016 14 Jul 2016 001-36046
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 06 Jul 2016 06 Jul 2016 001-37813
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 29 Jun 2016 29 Jun 2016 001-37813
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 22 Jun 2016 20 Jun 2016 001-33071
4 Open 4 document | Open XBRL data View SEC filing for 4 OWNERSHIP DOCUMENT 16 Jun 2016 14 Jun 2016 001-33071
4 Open 4 document | Open XBRL data View SEC filing for 4 OWNERSHIP DOCUMENT 08 Jun 2016 06 Jun 2016 001-33071
4 Open 4 document | Open XBRL data View SEC filing for 4 OWNERSHIP DOCUMENT 02 Jun 2016 31 May 2016 001-33071
4 Open 4 document | Open XBRL data View SEC filing for 4 OWNERSHIP DOCUMENT 27 May 2016 25 May 2016 001-33071
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 May 2016 31 Mar 2016 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 23 Feb 2016 19 Feb 2016 000-51329
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 19 Feb 2016 03 Sep 2015 001-37693
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 17 Feb 2016 12 Feb 2016 001-36510
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 16 Feb 2016 11 Feb 2016 000-51329
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 Feb 2016 31 Dec 2015 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 12 Feb 2016 10 Feb 2016 001-37693
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 11 Feb 2016 09 Feb 2016 001-36510
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 11 Feb 2016 09 Feb 2016 001-36510
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 10 Feb 2016 10 Feb 2016 001-37693
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 08 Feb 2016 08 Feb 2016 001-37687
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 02 Feb 2016 02 Feb 2016 001-37687
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 22 Jan 2016 20 Jan 2016 000-51329
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 22 Jan 2016 20 Jan 2016 000-51329
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 18 Dec 2015 16 Dec 2015 001-34186
4/A Open 4/A document View SEC filing for 4/A OWNERSHIP DOCUMENT 18 Dec 2015 09 Dec 2015 001-34186
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 17 Dec 2015 15 Dec 2015 000-28132
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 11 Dec 2015 09 Dec 2015 001-34186
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 08 Dec 2015 04 Dec 2015 001-34703
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 03 Dec 2015 01 Dec 2015 001-34703
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 Nov 2015 30 Sep 2015 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 10 Nov 2015 06 Nov 2015 001-34703
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 03 Nov 2015 30 Oct 2015 001-34703
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 29 Oct 2015 27 Oct 2015 001-34703
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 26 Oct 2015 22 Oct 2015 001-34703
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 21 Oct 2015 19 Oct 2015 001-34703
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 14 Oct 2015 14 Oct 2015 001-37587
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 09 Oct 2015 07 Oct 2015 001-34703
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 09 Oct 2015 07 Oct 2015 001-34703
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 09 Oct 2015 07 Oct 2015 001-34703
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 07 Oct 2015 07 Oct 2015 001-37587
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 30 Sep 2015 28 Sep 2015 001-32302
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 22 Sep 2015 18 Sep 2015 001-36046
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 22 Sep 2015 22 Sep 2015 001-37553
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 16 Sep 2015 16 Sep 2015 001-37553
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2015 30 Jun 2015 028-05366
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A 14 Aug 2015 31 Mar 2015 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 28 Jul 2015 28 Jul 2015 001-37508
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 22 Jul 2015 22 Jul 2015 001-37508
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 21 Jul 2015 17 Jul 2015 001-32302
4/A Open 4/A document View SEC filing for 4/A OWNERSHIP DOCUMENT 17 Jul 2015 06 Jul 2015 001-32302
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 13 Jul 2015 10 Jul 2015 000-28132
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 08 Jul 2015 06 Jul 2015 001-32302
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 01 Jul 2015 29 Jun 2015 001-32302
4/A Open 4/A document View SEC filing for 4/A OWNERSHIP DOCUMENT 01 Jul 2015 24 Jun 2015 001-32302
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 26 Jun 2015 24 Jun 2015 001-32302
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 25 Jun 2015 23 Jun 2015 001-37449
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 23 Jun 2015 19 Jun 2015 001-32302
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 18 Jun 2015 16 Jun 2015 001-32302
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 16 Jun 2015 16 Jun 2015 001-37449
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 15 Jun 2015 11 Jun 2015 001-32302
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 18 May 2015 15 May 2015 001-34186
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2015 31 Mar 2015 028-05366
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 13 May 2015 11 May 2015 001-32302
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 13 May 2015 12 May 2015 001-37378
4 Open 4 document View SEC filing for 4 07 May 2015 05 May 2015 001-36292
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 06 May 2015 06 May 2015 001-37378
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 09 Apr 2015 08 Apr 2015 001-36046
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 25 Mar 2015 25 Mar 2015 001-36889
3 Open 3 document View SEC filing for 3 19 Mar 2015 19 Mar 2015 001-36889
4 Open 4 document View SEC filing for 4 09 Mar 2015 06 Mar 2015 001-33071
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 19 Feb 2015 18 Feb 2015 001-36847
13F-HR Open 13F-HR document View SEC filing for 13F-HR 17 Feb 2015 31 Dec 2014 028-05366
3 Open 3 document View SEC filing for 3 11 Feb 2015 11 Feb 2015 001-36847
3 Open 3 document View SEC filing for 3 10 Feb 2015 10 Feb 2015 001-36046
4 Open 4 document View SEC filing for 4 02 Feb 2015 29 Jan 2015 001-36628
4 Open 4 document View SEC filing for 4 28 Jan 2015 28 Jan 2015 001-36292
4 Open 4 document View SEC filing for 4 16 Jan 2015 14 Jan 2015 001-33071
4 Open 4 document View SEC filing for 4 05 Jan 2015 01 Jan 2015 000-13839
4 Open 4 document View SEC filing for 4 24 Dec 2014 23 Dec 2014 001-34186
3 Open 3 document View SEC filing for 3 24 Dec 2014 23 Dec 2014 001-34186
3 Open 3 document View SEC filing for 3 22 Dec 2014 18 Dec 2014 001-36292
4 Open 4 document View SEC filing for 4 25 Nov 2014 21 Nov 2014 001-36281
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2014 30 Sep 2014 028-05366
4 Open 4 document View SEC filing for 4 10 Nov 2014 07 Nov 2014 001-36281
4 Open 4 document View SEC filing for 4 27 Oct 2014 27 Oct 2014 001-36694
3 Open 3 document View SEC filing for 3 21 Oct 2014 21 Oct 2014 001-36694
4 Open 4 document View SEC filing for 4 15 Oct 2014 10 Oct 2014 001-36281
4 Open 4 document View SEC filing for 4 01 Oct 2014 29 Sep 2014 001-36628
4 Open 4 document View SEC filing for 4 25 Sep 2014 23 Sep 2014 001-36628
3/A Open 3/A document View SEC filing for 3/A 18 Sep 2014 06 Jun 2014 001-36628
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2014 30 Jun 2014 028-05366
4 Open 4 document View SEC filing for 4 11 Aug 2014 07 Aug 2014 001-33071
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 06 Aug 2014 06 Aug 2014 001-36562
4 Open 4 document View SEC filing for 4 05 Aug 2014 01 Aug 2014 001-33071
3 Open 3 document View SEC filing for 3 05 Aug 2014 01 Aug 2014 001-33071
4 Open 4 document View SEC filing for 4 05 Aug 2014 05 Aug 2014 001-36579
3/A Open 3/A document View SEC filing for 3/A 01 Aug 2014 31 Jul 2014 001-36562
3 Open 3 document View SEC filing for 3 31 Jul 2014 31 Jul 2014 001-36562
3 Open 3 document View SEC filing for 3 10 Jun 2014 06 Jun 2014 000-50855
13F-HR Open 13F-HR document View SEC filing for 13F-HR 15 May 2014 31 Mar 2014 028-05366
4 Open 4 document View SEC filing for 4 22 Apr 2014 22 Apr 2014 001-36419
3 Open 3 document View SEC filing for 3 15 Apr 2014 15 Apr 2014 001-36419
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Feb 2014 31 Dec 2013 028-05366
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 11 Feb 2014 10 Feb 2014 001-36292
3 Open 3 document View SEC filing for 3 04 Feb 2014 04 Feb 2014 001-36292
4 Open 4 document View SEC filing for 4 04 Feb 2014 04 Feb 2014 001-36281
3 Open 3 document View SEC filing for 3 OWNERSHIP DOCUMENT 29 Jan 2014 29 Jan 2014 001-36281
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Nov 2013 30 Sep 2013 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR 14 Aug 2013 30 Jun 2013 028-05366
4 Open 4 document View SEC filing for 4 18 Jul 2013 16 Jul 2013 001-32626
3 Open 3 document View SEC filing for 3 17 Jul 2013 17 Jul 2013 000-13839
13F-HR Open 13F-HR document View SEC filing for 13F-HR NONE 14 May 2013 31 Mar 2013 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR NONE 14 Feb 2013 31 Dec 2012 028-05366
4 Open 4 document View SEC filing for 4 15 Jan 2013 11 Jan 2013 001-32626
3 Open 3 document View SEC filing for 3 20 Dec 2012 12 Dec 2012 000-51665
3/A Open 3/A document View SEC filing for 3/A 20 Dec 2012 04 Dec 2012 000-51567
3 Open 3 document View SEC filing for 3 14 Dec 2012 04 Dec 2012 000-51567
4 Open 4 document View SEC filing for 4 16 Nov 2012 14 Nov 2012 001-32626
13F-HR Open 13F-HR document View SEC filing for 13F-HR NONE 14 Nov 2012 30 Sep 2012 028-05366
4 Open 4 document View SEC filing for 4 10 Oct 2012 28 Sep 2012 001-32626
4 Open 4 document View SEC filing for 4 21 Aug 2012 17 Aug 2012 001-32626
13F-HR Open 13F-HR document View SEC filing for 13F-HR NONE 14 Aug 2012 30 Jun 2012 028-05366
4 Open 4 document View SEC filing for 4 09 Jul 2012 05 Jul 2012 001-32626
4/A Open 4/A document View SEC filing for 4/A 06 Jul 2012 29 Jun 2012 001-32626
4 Open 4 document View SEC filing for 4 03 Jul 2012 29 Jun 2012 001-32626
4 Open 4 document View SEC filing for 4 28 Jun 2012 26 Jun 2012 001-32626
13F-HR Open 13F-HR document View SEC filing for 13F-HR NONE 15 May 2012 31 Mar 2012 028-05366
4 Open 4 document View SEC filing for 4 07 May 2012 03 May 2012 001-32626
4 Open 4 document View SEC filing for 4 23 Mar 2012 21 Mar 2012 001-32626
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 14 Mar 2012 12 Mar 2012 001-32626
4 Open 4 document View SEC filing for 4 12 Mar 2012 07 Mar 2012 001-32626
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A NONE 02 Mar 2012 30 Sep 2011 028-05366
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A NONE 15 Feb 2012 31 Dec 2011 028-05366
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A NONE 14 Feb 2012 31 Dec 2011 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR NONE 14 Feb 2012 31 Dec 2011 028-05366
4 Open 4 document View SEC filing for 4 08 Feb 2012 06 Feb 2012 001-32626
4 Open 4 document View SEC filing for 4 OWNERSHIP DOCUMENT 11 Jan 2012 09 Jan 2012 001-32626
13F-HR/A Open 13F-HR/A document View SEC filing for 13F-HR/A DEERFIELD MANAGEMENT COMPANY, LP 13F HOLDINGS REPORT 17 Nov 2011 30 Sep 2011 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR DEERFIELD MANAGEMENT COMPANY, LP 13F HOLDINGS REPORT 14 Nov 2011 30 Sep 2011 028-05366
4 Open 4 document View SEC filing for 4 28 Sep 2011 26 Sep 2011 001-32626
4 Open 4 document View SEC filing for 4 26 Sep 2011 22 Sep 2011 001-32626
4 Open 4 document View SEC filing for 4 21 Sep 2011 19 Sep 2011 001-32626
4 Open 4 document View SEC filing for 4 02 Sep 2011 31 Aug 2011 001-32626
13F-HR Open 13F-HR document View SEC filing for 13F-HR DEERFIELD MANAGEMENT COMPANY, LP 13F HOLDINGS REPORT 12 Aug 2011 30 Jun 2011 028-05366
4 Open 4 document View SEC filing for 4 18 Jul 2011 14 Jul 2011 001-32626
4/A Open 4/A document View SEC filing for 4/A 28 Jun 2011 23 Jun 2011 001-32626
4 Open 4 document View SEC filing for 4 27 Jun 2011 23 Jun 2011 001-32626
4 Open 4 document View SEC filing for 4 15 Jun 2011 13 Jun 2011 001-32626
4 Open 4 document View SEC filing for 4 07 Jun 2011 03 Jun 2011 001-32626
4 Open 4 document View SEC filing for 4 07 Jun 2011 26 May 2011 000-29889
4 Open 4 document View SEC filing for 4 31 May 2011 26 May 2011 001-32626
4 Open 4 document View SEC filing for 4 24 May 2011 20 May 2011 001-32626
4 Open 4 document View SEC filing for 4 19 May 2011 17 May 2011 001-32626
13F-HR Open 13F-HR document View SEC filing for 13F-HR DEERFIELD MANAGEMENT COMPANY, LP 13F HOLDINGS REPORT 16 May 2011 31 Mar 2011 028-05366
4 Open 4 document View SEC filing for 4 06 May 2011 04 May 2011 000-31255
3 Open 3 document View SEC filing for 3 06 May 2011 04 May 2011 000-31255
4 Open 4 document View SEC filing for 4 06 Apr 2011 04 Apr 2011 000-31191
4 Open 4 document View SEC filing for 4 01 Apr 2011 30 Mar 2011 000-31191
4 Open 4 document View SEC filing for 4 22 Mar 2011 18 Mar 2011 001-31533
4 Open 4 document View SEC filing for 4 17 Mar 2011 15 Mar 2011 001-31533
13F-HR Open 13F-HR document View SEC filing for 13F-HR DEERFIELD MANAGEMENT COMPANY, LP 13F HOLDINGS REPORT 14 Feb 2011 31 Dec 2010 028-05366
4 Open 4 document View SEC filing for 4 14 Dec 2010 14 Dec 2010 001-33351
4 Open 4 document View SEC filing for 4 13 Dec 2010 09 Dec 2010 000-20424
4 Open 4 document View SEC filing for 4 18 Nov 2010 16 Nov 2010 001-33351
13F-HR Open 13F-HR document View SEC filing for 13F-HR DEERFIELD MANAGEMENT COMPANY, LP 13F HOLDINGS REPORT 15 Nov 2010 30 Sep 2010 028-05366
4 Open 4 document View SEC filing for 4 05 Nov 2010 03 Nov 2010 000-29889
3 Open 3 document View SEC filing for 3 05 Nov 2010 03 Nov 2010 000-29889
4 Open 4 document View SEC filing for 4 28 Oct 2010 26 Oct 2010 001-33351
4 Open 4 document View SEC filing for 4 19 Oct 2010 15 Oct 2010 000-31191
4 Open 4 document View SEC filing for 4 28 Sep 2010 24 Sep 2010 001-33351
4 Open 4 document View SEC filing for 4 23 Sep 2010 21 Sep 2010 001-33351
4 Open 4 document View SEC filing for 4 17 Sep 2010 15 Sep 2010 001-33351
4 Open 4 document View SEC filing for 4 14 Sep 2010 10 Sep 2010 001-32626
4 Open 4 document View SEC filing for 4 13 Sep 2010 09 Sep 2010 000-31191
4 Open 4 document View SEC filing for 4 23 Aug 2010 19 Aug 2010 001-33351
4 Open 4 document View SEC filing for 4 18 Aug 2010 16 Aug 2010 001-31564
13F-HR Open 13F-HR document View SEC filing for 13F-HR DEERFIELD MANAGEMENT COMPANY, LP 13F HOLDINGS REPORT 11 Aug 2010 30 Jun 2010 028-05366
4 Open 4 document View SEC filing for 4 09 Aug 2010 05 Aug 2010 000-31191
3 Open 3 document View SEC filing for 3 09 Aug 2010 04 Aug 2010 000-31191
3/A Open 3/A document View SEC filing for 3/A 27 Jul 2010 19 Jul 2010 000-20424
3 Open 3 document View SEC filing for 3 22 Jul 2010 19 Jul 2010 000-20424
4 Open 4 document View SEC filing for 4 09 Jun 2010 07 Jun 2010 001-32626
13F-HR Open 13F-HR document View SEC filing for 13F-HR 17 May 2010 31 Mar 2010 028-05366
13F-HR Open 13F-HR document View SEC filing for 13F-HR 16 Feb 2010 31 Dec 2009 028-05366

About this filer

DEERFIELD MANAGEMENT COMPANY, L.P. files with the SEC under CIK 0001009258. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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