Activist Investor 13D Filings


This table shows recent activist investor (Schedule 13D) filings made in this industry. Any investor or hedge fund that makes an investment with the intention of influencing management is considered an activist investor and must file a 13D.

DateFormInvestorTargetSharesOwnership
(Percent)
Ownership Change
(Percent)
2018‑05‑22 SC 13D/A Starboard Value LP DEPO / DepoMed 2,703,995 4.3 -30.40
2018‑05‑21 SC 13D/A Broadfin Capital, LLC BDSI / BioDelivery Sciences International 4,278,819 7.2 0.00
2018‑05‑21 SC 13D/A Engaged Capital LLC PETX / Aratana Therapeutics 2,400,000 5.1 0.00
2018‑05‑18 SC 13D/A Bp Peptides, Llc CAPS / Capstone Therapeutics 20,488,518 36.4 4.93
2018‑05‑17 SC 13D Op Financial Ltd NBY / NovaBay Pharmaceuticals 1,700,000 9.9
2018‑05‑17 SC 13D/A ARMISTICE CAPITAL, LLC EYEG / Eyegate Pharmaceuticals 16,742,500 40.2 3.05
2018‑05‑16 SC 13D/A Eastern Capital LTD TPIV / TapImmune 5,300,002 38.8 32.50
2018‑05‑15 SC 13D/A APPLE TREE PARTNERS II LP TKAI / Tokai Pharmaceuticals 13,888 0.1 -98.23
2018‑05‑14 SC 13D/A Starboard Value LP DEPO / DepoMed 3,885,295 6.1 -17.95
2018‑05‑10 SC 13D/A Baupost Group LLC/MA KERX / Keryx Biopharmaceuticals 61,374,013 39.66 3.65
2018‑05‑07 SC 13D Mannello Joseph MYOS / MYOS RENS Technology 716,893 9.3
2018‑05‑07 SC 13D/A DUGGAN ROBERT W AKAO / Achaogen 8,230,052 18.4 17.19
2018‑05‑07 SC 13D United Therapeutics Corp STDY / SteadyMed 11,517,741 43.3
2018‑05‑03 SC 13D/A Dipp Michelle OVAS / Ovascience 2,336,234 6.3 -8.59
2018‑05‑02 SC 13D/A APPLE TREE PARTNERS II LP TKAI / Tokai Pharmaceuticals 784,986 8.3 -13.04
2018‑05‑01 SC 13D/A 683 Capital Management, LLC ONTX / Onconova Therapeutics 16,503,169 20.6 253.77
2018‑05‑01 SC 13D/A ORBIMED ADVISORS LLC STDY / SteadyMed 3,952,696 13.9 0.00
2018‑05‑01 SC 13D/A Broadfin Capital, LLC BDSI / BioDelivery Sciences International 4,278,819 7.3 0.00
2018‑04‑27 SC 13D/A Trieu Vuong MRNA / Marina Biotech 11,219,002 63.37 -71.58
2018‑04‑26 SC 13D/A Redmile Group, LLC ALDR / Alder BioPharmaceuticals 6,807,876 9.99 0.00
2018‑04‑26 SC 13D/A Baupost Group LLC/MA OREX / Orexigen Therapeutics 9,996,116 37.5 35.12
2018‑04‑26 SC 13D/A Shin Nippon Biomedical Laboratories, Ltd. WVE / WAVE Life Sciences 5,894,478 21.1 0.15
2018‑04‑23 SC 13D/A DUGGAN ROBERT W AKAO / Achaogen 7,023,076 15.7 10.65
2018‑04‑23 SC 13D/A Roivant Sciences Ltd. ABUS / Arbutus Biopharma 16,013,540 29.1 0.00
2018‑04‑20 SC 13D ARMISTICE CAPITAL, LLC EYEG / Eyegate Pharmaceuticals 16,246,978 50.8 1,692.54
2018‑04‑17 SC 13D/A Novartis Bioventures Ltd NVUS / Novus Therapeutics 499,273 5.3
2018‑04‑17 SC 13D/A STAFFORD JOHN S III CDMO / Avid Bioservices 2,362,260 4.2 -29.95
2018‑04‑14 SC 13D/A SMITH ROBERT J TXMD / TherapeuticsMD 9,938,708 -23.31
2018‑04‑13 SC 13D/A Puissance Cross-border Opportunities Iii Llc BLPH / Bellerophon Therapeutics 8,298,755 15.1 0.00
2018‑04‑12 SC 13D/A Roivant Sciences Ltd. ABUS / Arbutus Biopharma 16,013,540 29.1 0.00
2018‑04‑12 SC 13D/A ORBIMED ADVISORS LLC MIRN / Mirna Therapeutics 2,029,996 7.98 0.00
2018‑04‑12 SC 13D/A Arch Venture Fund VII LP PULM / Pulmatrix 3,957,122 9.9 73.07
2018‑04‑12 SC 13D/A Polaris Venture Partners V, L.P. PULM / Pulmatrix 7,510,187 17.7 86.31
2018‑04‑12 SC 13D Biotechnology Value Fund L P INFI / Infinity Pharmaceuticals 11,276,508 21.7 15.46
2018‑04‑10 SC 13D Nestle Health Science US Holdings, Inc. MCRB / Seres Therapeutics 6,899,201 16.97 0.15
2018‑04‑10 SC 13D/A GLAXOSMITHKLINE PLC INVA / Innoviva 32,005,260 31.4 0.00
2018‑04‑09 SC 13D Broadfin Capital, LLC BDSI / BioDelivery Sciences International 4,278,819 7.3 -7.67
2018‑04‑09 SC 13D/A STAFFORD JOHN S III CDMO / Avid Bioservices 3,372,176 6.1 0.00
2018‑04‑06 SC 13D/A STAFFORD JOHN S III CDMO / Avid Bioservices 3,372,176 6.1
2018‑04‑05 SC 13D/A Starboard Value LP DEPO / DepoMed 4,735,295 7.5 -3.16
2018‑04‑05 SC 13D Engaged Capital LLC PETX / Aratana Therapeutics 2,400,000 5.2
2018‑04‑04 SC 13D/A Clarus Lifesciences II, L.P. CATB / Catabasis Pharmaceuticals 2,024,783 6.97 -26.86
2018‑04‑04 SC 13D Iroquois Capital Management, LLC TPIV / TapImmune 509,393 7.3 -4.14
2018‑04‑02 SC 13D Sagard Capital Partners, L.P. JAGX / Jaguar Animal Health 49,724,330 22.6
2018‑03‑28 SC 13D Aptorum Group Ltd RZLT / Rezolute 4,457,962 8.2
2018‑03‑27 SC 13D/A RA Capital Management, LLC DRNA / Dicerna Pharmaceuticals 3,933,489 7.6 -11.85
2018‑03‑27 SC 13D/A SHROTRIYA RAJESH C MD SPPI / Spectrum Pharmaceuticals 6,149,794 5.92 -0.49
2018‑03‑23 SC 13D Healios K.k. ATHX / Athersys 12,000,000 8.7
2018‑03‑23 SC 13D Redmile Group, LLC ALDR / Alder BioPharmaceuticals 6,807,876 9.99 4.64
2018‑03‑22 SC 13D/A Sarissa Capital Management LP APRI / Apricus Biosciences