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Rubric Capital Management LP

Activist investor & 5%+ owner · SC 13D/13G filings

Total Filings

156

Stocks Covered

58

Latest Filing

Feb 13, 2026

Filings

Mereo BioPharma Group plc

SC 13D/A · Nov 2, 2023

13.3%

92.3M shares

Mereo BioPharma Group plc

SC 13D/A · Oct 30, 2023

13.2%

92.2M shares

Heron Therapeutics, Inc.

SC 13D/A · Jul 25, 2023

19.0%

26.7M shares

TherapeuticsMD, Inc.

SC 13D/A · Jun 30, 2023

19.6%

2.1M shares

Mereo BioPharma Group plc

SC 13D/A · Jun 16, 2023

14.4%

90.0M shares

Chimerix, Inc.

SC 13G · May 2, 2023

5.4%

4.8M shares

Heron Therapeutics, Inc.

SC 13D/A · Feb 22, 2023

9.9%

11.8M shares

Playa Hotels & Resorts N.V.

SC 13G/A · Feb 10, 2023

7.3%

11.9M shares

Sutro Biopharma, Inc.

SC 13G · Feb 10, 2023

5.6%

3.2M shares

Xperi Inc.

SC 13G · Feb 10, 2023

9.2%

3.8M shares

Telesat Corporation

SC 13G/A · Feb 10, 2023

11.3%

1.4M shares

Digimarc Corporation

SC 13G · Feb 10, 2023

6.1%

1.2M shares

Trevi Therapeutics, Inc.

SC 13G · Feb 10, 2023

9.5%

5.7M shares

Ovid Therapeutics Inc.

SC 13G · Feb 10, 2023

9.7%

6.8M shares

Golar LNG Limited

SC 13G/A · Feb 10, 2023

5.9%

6.4M shares

BGC Partners, Inc.

SC 13G · Feb 10, 2023

5.6%

18.3M shares

Collegium Pharmaceutical, Inc.

SC 13G/A · Feb 10, 2023

9.9%

3.3M shares

Amryt Pharma plc

SC 13G/A · Feb 10, 2023

5.6%

18.0M shares

MATIV Holdings, Inc.

SC 13G · Feb 10, 2023

5.5%

3.0M shares

Werewolf Therapeutics, Inc.

SC 13G · Feb 10, 2023

6.0%

1.8M shares

LendingClub Corporation

SC 13G · Feb 10, 2023

5.5%

5.8M shares

EverQuote, Inc.

SC 13G/A · Feb 10, 2023

4.8%

1.2M shares

Karyopharm Therapeutics Inc.

SC 13G · Feb 10, 2023

7.3%

8.3M shares

Whole Earth Brands, Inc.

SC 13G/A · Feb 10, 2023

2.4%

998K shares

Par Pacific Holdings, Inc.

SC 13G/A · Feb 10, 2023

5.0%

3.0M shares

Vincerx Pharma, Inc.

SC 13G/A · Feb 10, 2023

1.8%

387K shares

SIO Gene Therapies Inc.

SC 13G · Feb 10, 2023

9.5%

7.0M shares

Koppers Holdings Inc.

SC 13G/A · Feb 10, 2023

5.4%

1.1M shares

Ferroglobe PLC

SC 13G/A · Feb 10, 2023

1.7%

3.2M shares

Chimerix, Inc.

SC 13D · Nov 10, 2022

8.5%

7.5M shares

Mereo BioPharma Group plc

SC 13D/A · Oct 28, 2022

13.4%

83.8M shares

Mereo BioPharma Group plc

SC 13D/A · Sep 23, 2022

13.4%

83.8M shares

TherapeuticsMD, Inc.

SC 13D/A · Aug 30, 2022

18.3%

1.7M shares

Mereo BioPharma Group plc

SC 13D/A · Aug 23, 2022

14.3%

83.8M shares

TherapeuticsMD, Inc.

SC 13D · Aug 8, 2022

18.3%

1.7M shares

Radius Health, Inc.

SC 13D · Jun 16, 2022

14.6%

7.0M shares

Mereo BioPharma Group plc

SC 13D/A · Jun 14, 2022

14.1%

82.3M shares

Mereo BioPharma Group plc

SC 13D/A · Jun 9, 2022

13.1%

76.8M shares

Mereo BioPharma Group plc

SC 13D · May 26, 2022

12.8%

75.0M shares

MagnaChip Semiconductor Corporation

SC 13G/A · Feb 14, 2022

1.9%

872K shares

Core Scientific, Inc. (formerly known as Power & Digital Infrastructure Acquisition Corp.)

SC 13G · Feb 14, 2022

0.0%

0 shares

Playa Hotels & Resorts N.V.

SC 13G · Feb 14, 2022

7.0%

11.5M shares

Koppers Holdings Inc.

SC 13G · Feb 14, 2022

5.2%

1.1M shares

Ferroglobe PLC

SC 13G · Feb 14, 2022

7.3%

13.6M shares

Golar LNG Limited

SC 13G · Feb 14, 2022

6.2%

6.8M shares

EverQuote, Inc.

SC 13G · Feb 14, 2022

5.5%

1.3M shares

Chimerix, Inc.

SC 13G · Feb 14, 2022

5.5%

4.8M shares

Antares Pharma, Inc.

SC 13G · Feb 14, 2022

6.3%

10.8M shares

Amryt Pharma plc

SC 13G · Feb 14, 2022

5.6%

17.7M shares

Par Pacific Holdings, Inc.

SC 13G/A · Feb 14, 2022

6.2%

3.7M shares