Investor Rubric Capital Management LP
13D/G Filings

This page shows a list of all the recent 13D/G filings made by Rubric Capital Management LP . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

Date Form Target Prev
Shares
Current
Shares
Change
(Percent)
Ownership
(Percent)
Change
(Percent)
2025-08-12 13D/A HRTX / Heron Therapeutics, Inc. 26,713,503 29,100,728
2025-07-09 13G/A TLN / Talen Energy Corporation 6,123,500 4,505,302
2025-07-09 13G/A QDEL / QuidelOrtho Corporation 5,550,000 4,637,738
2025-07-09 13G/A OPK / OPKO Health, Inc. 48,706,640 47,791,243
2025-07-09 13G/A OVID / Ovid Therapeutics Inc. 5,315,969 478,533
2025-07-09 13G/A IART / Integra LifeSciences Holdings Corporation 4,643,672 7,353,934
2025-07-09 13G/A ADPT / Adaptive Biotechnologies Corporation 14,400,000 6,256,847
2025-07-09 13G TRVI / Trevi Therapeutics, Inc. 4,205,129 8,531,860
2025-07-09 13G/A KNSA / Kiniksa Pharmaceuticals, Ltd. 3,383,239 3,909,806
2025-07-09 13G TAC / TransAlta Corporation 15,948,151
2025-05-14 13G/A COLL / Collegium Pharmaceutical, Inc. 2,350,000 3,000,000
2025-05-14 13G IART / Integra LifeSciences Holdings Corporation 4,643,672
2025-05-14 13G/A GLNG / Golar LNG Limited 7,710,211 8,975,149
2025-05-14 13G/A KNSA / Kiniksa Pharmaceuticals, Ltd. 2,419,103 3,383,239
2025-05-14 13G/A NFE / New Fortress Energy Inc. 15,000,000 24,338,675
2025-05-14 13G/A GDRX / GoodRx Holdings, Inc. 5,804,628 0
2025-05-14 13G/A DOLE / Dole plc 5,141,388 4,155,656
2025-02-13 13G/A TLN / Talen Energy Corporation 11,368,614 6,123,500
2025-02-13 13G/A TRVI / Trevi Therapeutics, Inc. 5,026,931 4,205,129
2025-02-13 13G/A GLNG / Golar LNG Limited 6,506,757 7,710,211
2025-02-13 13G GDRX / GoodRx Holdings, Inc. 4,680,028 5,804,628
2025-02-13 13G/A SEG / Seaport Entertainment Group Inc. 276,942 573,408
2025-02-13 13G/A QDEL / QuidelOrtho Corporation 4,200,000 5,550,000
2025-02-13 13G/A CHRS / Coherus Oncology, Inc. 10,400,000 5,258,754
2025-02-13 13G NFE / New Fortress Energy Inc. 15,000,000
2025-02-13 13G/A MD / Pediatrix Medical Group, Inc. 8,275,000 3,148,440
2025-02-13 13G/A SDGR / Schrödinger, Inc. 3,685,503 5,000,000
2025-02-13 13G COLL / Collegium Pharmaceutical, Inc. 1,250,000 2,350,000
2024-11-13 13G DOLE / Dole plc 5,141,388
2024-11-13 13G/A COLL / Collegium Pharmaceutical, Inc. 2,758,253 1,250,000
2024-11-13 13G CHRS / Coherus Oncology, Inc. 10,400,000
2024-11-13 13G/A BGC / BGC Group, Inc. 20,000,000 16,972,580
2024-11-13 13G/A SSYS / Stratasys Ltd. 4,250,000 6,191,000
2024-11-13 13G/A ANIP / ANI Pharmaceuticals, Inc. 1,125,000 56,671
2024-11-13 13G OPK / OPKO Health, Inc. 48,706,640
2024-11-13 13G ADPT / Adaptive Biotechnologies Corporation 14,400,000
2024-11-13 13G/A TRVI / Trevi Therapeutics, Inc. 5,684,420 5,026,931
2024-11-13 13G MD / Pediatrix Medical Group, Inc. 8,275,000
2024-11-13 13G/A GDRX / GoodRx Holdings, Inc. 5,872,806 4,680,028
2024-11-13 13G/A HOWL / Werewolf Therapeutics, Inc. 1,935,357 1,333,893
2024-11-13 13G ZYME / Zymeworks Inc. 3,917,331
2024-11-13 13G QDEL / QuidelOrtho Corporation 4,200,000
2024-11-13 13G RNW / ReNew Energy Global Plc 13,706,102
2024-11-13 13G SDGR / Schrödinger, Inc. 3,685,503
2024-11-13 13G/A STRO / Sutro Biopharma, Inc. 3,344,810 0
2024-11-13 13G TLN / Talen Energy Corporation 11,368,614
2024-11-13 13G/A KNSA / Kiniksa Pharmaceuticals, Ltd. 2,907,501 2,419,103
2024-11-13 13G SEG / Seaport Entertainment Group Inc. 276,942
2024-11-13 13G/A ARQT / Arcutis Biotherapeutics, Inc. 6,644,530 10,966,672
2024-06-17 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 99,714,985 108,486,735
2024-06-11 13D/A XPER / Xperi Inc. 4,043,744 4,143,744
2024-05-31 13D/A XPER / Xperi Inc. 4,043,744 4,043,744
2024-05-31 13D/A HRTX / Heron Therapeutics, Inc. 26,713,503 26,713,503
2024-04-16 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 99,704,885 99,714,985
2024-02-21 13D/A XPER / Xperi Inc. 3,736,219 4,043,744
2024-02-14 13D/A XPER / Xperi Inc. 3,301,219 3,736,219
2024-02-12 13G/A BGC / BGC Group, Inc. 20,000,000
2024-02-12 13G/A KOP / Koppers Holdings Inc. 1,133,840 1,007,341
2024-02-12 13G/A HOWL / Werewolf Therapeutics, Inc. 1,835,387 1,935,357
2024-02-12 13G SSYS / Stratasys Ltd. 4,250,000
2024-02-12 13G/A PARR / Par Pacific Holdings, Inc. 3,049,000 1,199,749
2024-02-12 13G SCPH / scPharmaceuticals Inc. 3,500,000
2024-02-12 13G ANIP / ANI Pharmaceuticals, Inc. 1,125,000
2024-02-12 13G/A COLL / Collegium Pharmaceutical, Inc. 3,333,628 2,758,253
2024-02-12 13G/A LC / LendingClub Corporation 5,826,128 0
2024-02-12 13G OFIX / Orthofix Medical Inc. 3,665,000
2024-02-12 13G/A TRVI / Trevi Therapeutics, Inc. 5,684,420 5,684,420
2024-02-12 13G/A PLYA / Playa Hotels & Resorts N.V. 11,876,728 4,431,161
2024-02-12 13G/A TSAT / Telesat Corporation 1,410,000 959,764
2024-02-12 13G/A MATV / Mativ Holdings, Inc. 3,020,000 4,000,000
2024-02-12 13G/A STRO / Sutro Biopharma, Inc. 3,211,872 3,344,810
2024-02-12 13G/A GLNG / Golar LNG Limited 6,352,756 6,506,757
2024-02-12 13G KNSA / Kiniksa Pharmaceuticals, Ltd. 2,907,501
2024-02-12 13G/A DMRC / Digimarc Corporation 1,214,593 0
2024-02-12 13G/A KPTI / Karyopharm Therapeutics Inc. 8,294,621 0
2024-02-12 13G/A OVID / Ovid Therapeutics Inc. 6,828,065 5,315,969
2024-02-12 13G ARQT / Arcutis Biotherapeutics, Inc. 6,644,530
2024-02-12 13G/A CMRX / Chimerix, Inc. 4,779,020 0
2024-02-12 13G GDRX / GoodRx Holdings, Inc. 5,872,806
2024-01-23 13D XPER / Xperi Inc. 3,843,744 3,301,219
2023-11-20 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 97,326,555 99,704,885
2023-11-17 13D/A TXMD / TherapeuticsMD, Inc. 2,069,716 2,946,908
2023-11-15 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 97,319,355 97,326,555
2023-11-13 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 95,561,160 97,319,355
2023-11-08 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 93,372,585 95,561,160
2023-11-06 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 92,291,205 93,372,585
2023-11-02 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 92,199,075 92,291,205
2023-10-31 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 90,030,600 92,199,075
2023-07-25 13D/A HRTX / Heron Therapeutics, Inc. 11,750,000 26,713,503
2023-06-30 13D/A TXMD / TherapeuticsMD, Inc. 1,721,953 2,069,716
2023-06-16 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 83,780,600 90,030,600
2023-05-02 13G CMRX / Chimerix, Inc. 7,500,000 4,779,020
2023-02-22 13D/A HRTX / Heron Therapeutics, Inc. 11,750,000 11,750,000
2023-02-10 13G DMRC / Digimarc Corporation 1,214,593
2023-02-10 13G/A EVER / EverQuote, Inc. 1,278,362 1,246,622
2023-02-10 13G BGCP / BGC Partners Inc - Class A 18,250,000
2023-02-10 13G/A GLNG / Golar LNG Limited 6,800,187 6,352,756
2023-02-10 13G/A KOP / Koppers Holdings Inc. 1,109,120 1,133,840
2023-02-10 13G STRO / Sutro Biopharma, Inc. 3,211,872
2023-02-10 13G KPTI / Karyopharm Therapeutics Inc. 8,294,621
2023-02-10 13G TRVI / Trevi Therapeutics, Inc. 5,684,420
2023-02-10 13G/A PARR / Par Pacific Holdings, Inc. 3,700,000 3,049,000
2023-02-10 13G OVID / Ovid Therapeutics Inc. 6,828,065
2023-02-10 13G MATV / Mativ Holdings, Inc. 3,020,000
2023-02-10 13G/A PLYA / Playa Hotels & Resorts N.V. 11,526,728 11,876,728
2023-02-10 13G/A FREE / Whole Earth Brands, Inc. 3,100,000 998,363
2023-02-10 13G/A US03217L1061 / Amryt Pharma PLC Sponsored ADR (United Kingdom) 17,722,340 18,000,000
2023-02-10 13G HOWL / Werewolf Therapeutics, Inc. 1,835,387
2023-02-10 13G/A VINC / Vincerx Pharma, Inc. 2,107,000 386,719
2023-02-10 13G/A TSAT / Telesat Corporation 1,395,000 1,410,000
2023-02-10 13G/A COLL / Collegium Pharmaceutical, Inc. 2,606,500 3,333,628
2023-02-10 13G/A GSM / Ferroglobe PLC 13,648,711 3,232,762
2023-02-10 13G SIOX / Sio Gene Therapies Inc. 7,000,000
2023-02-10 13G XPER / Xperi Inc. 3,843,744
2023-02-10 13G LC / LendingClub Corporation 5,826,128
2023-02-06 13D HRTX / Heron Therapeutics, Inc. 11,750,000
2022-11-10 13D CMRX / Chimerix, Inc. 4,800,000 7,500,000
2022-10-28 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 83,780,600 83,780,600
2022-09-23 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 83,780,600 83,780,600
2022-08-30 13D/A TXMD / TherapeuticsMD, Inc. 1,721,953 1,721,953
2022-08-24 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 82,272,810 83,780,600
2022-08-08 13D TXMD / TherapeuticsMD, Inc. 1,721,953
2022-06-16 13D RDUS / Radius Recycling, Inc. 6,959,305 6,959,305
2022-06-14 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 76,792,625 82,272,810
2022-06-09 13D/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 75,000,000 76,792,625
2022-05-26 13D MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 74,572,235 75,000,000
2022-02-14 13G/A MX / Magnachip Semiconductor Corporation 2,612,588 872,308
2022-02-14 13G / Core Scientific, Inc. 0
2022-02-14 13G PLYA / Playa Hotels & Resorts N.V. 11,526,728
2022-02-14 13G KOP / Koppers Holdings Inc. 1,109,120
2022-02-14 13G GSM / Ferroglobe PLC 13,648,711
2022-02-14 13G GLNG / Golar LNG Limited 6,800,187
2022-02-14 13G EVER / EverQuote, Inc. 1,278,362
2022-02-14 13G CMRX / Chimerix, Inc. 4,800,000
2022-02-14 13G ATRS / Antares Pharma Inc 10,800,000
2022-02-14 13G US03217L1061 / Amryt Pharma PLC Sponsored ADR (United Kingdom) 17,722,340
2022-02-14 13G/A PARR / Par Pacific Holdings, Inc. 2,850,000 3,700,000
2022-02-14 13G/A MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 56,500,000 74,572,235
2022-02-14 13G/A FREE / Whole Earth Brands, Inc. 2,600,000 3,100,000
2022-02-14 13G/A COLL / Collegium Pharmaceutical, Inc. 1,926,283 2,606,500
2022-02-10 13G VINC / Vincerx Pharma, Inc. 2,107,000
2022-01-21 13G TSAT / Telesat Corporation 1,395,000
2022-01-03 13G RDUS / Radius Recycling, Inc. 6,959,305
2021-12-02 13G MREO / Mereo BioPharma Group plc - Depositary Receipt (Common Stock) 56,500,000
2021-06-07 13G US16706W1027 / Chiasma Inc 7,250,000
2021-02-16 13G/A MX / Magnachip Semiconductor Corporation 2,371,101 2,612,588
2021-02-16 13G/A GPRE / Green Plains Inc. 2,335,000 1,056,330
2021-02-16 13G/A UEPS / Lesaka Technologies Inc 2,977,922 2,132,622
2021-02-16 13G FREE / Whole Earth Brands, Inc. 2,600,000
2021-02-16 13G PARR / Par Pacific Holdings, Inc. 2,850,000
2021-02-16 13G COLL / Collegium Pharmaceutical, Inc. 1,926,283
2020-02-14 13G/A GPRE / Green Plains Inc. 2,486,820 2,335,000
2020-02-14 13G STML / Stemline Therapeutics, Inc. 3,500,000
2020-02-14 13G UEPS / Lesaka Technologies Inc 2,977,922
2020-02-14 13G/A MX / Magnachip Semiconductor Corporation 3,000,000 2,371,101
2019-02-14 13G GPRE / Green Plains Inc. 2,486,820
2019-02-14 13G/A MX / Magnachip Semiconductor Corporation 2,250,500 3,000,000
2018-02-14 13G MX / Magnachip Semiconductor Corporation 2,250,500