Biological Products, Except Diagnostic Substances (Biotech) - Latest Activist Disclosures

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.

Date Form Target Company Investor Shares Ownership
(Percent)		 Ownership Change
(Percent)
2025-03-12 13D/A OTLK / Outlook Therapeutics, Inc. GMS Ventures & Investments 16,183,787 41.60 27.18
2025-03-12 13D/A ALGS / Aligos Therapeutics, Inc. Blatt Lawrence 175,509 3.20 -95.49
2025-03-12 13D/A ARMP / Armata Pharmaceuticals, Inc. Innoviva, Inc. 64,178,259 85.20 0.00
2025-03-10 13D/A SNTI / Senti Biosciences, Inc. New Enterprise Associates 15, L.P. 3,775,615 14.50 753.02
2025-03-07 13D/A TNYA / Tenaya Therapeutics, Inc. Casdin Capital, LLC 6,732,971 4.30 4.76
2025-03-07 13D/A TNYA / Tenaya Therapeutics, Inc. Column Group Iii, Lp 49,313,559 32.00 262.62
2025-03-07 13D REPL / Replimune Group, Inc. Baker Bros. Advisors Lp 11,045,336 14.30 0.00
2025-03-05 13D/A EXEL / Exelixis, Inc. Farallon Capital Partners, L.P. 23,439,500 8.40 -12.44
2025-02-27 13D/A ACLX / Arcellx, Inc. Elghandour Rami 3,997,132 6.90 40.22
2025-02-26 13D/A INBX / Inhibrx Biosciences, Inc. The Jon F. Kayyem and Paige Gates-Kayyem Family Trust 1,149,046 7.90
2025-02-26 13D/A INBX / Inhibrx Biosciences, Inc. Lappe Mark 925,413 6.40 21.54
2025-02-21 13D/A SLDB / Solid Biosciences Inc. BCLS SB Investco, LP
2025-02-21 13D/A SLDB / Solid Biosciences Inc. Perceptive Advisors Llc 11,934,679 15.60 72.10
2025-02-21 13D/A SLDB / Solid Biosciences Inc. Ra Capital Management, L.p.
2025-02-14 13D/A ABVX / ABIVAX Société Anonyme - Depositary Receipt (Common Stock) Sofinnova Crossover I 7,794,478 11.00 48.05
2025-02-12 13D PLUR / Pluri Inc. Chutzpah Holdings Ltd
2025-02-06 13D/A PROK / ProKidney Corp. Tolerantia, LLC 110,725,335 38.00 -0.48
2025-02-03 13D/A CASI / CASI Pharmaceuticals, Inc. Idg-accel China Growth Fund Iii L.p. 992,638 6.40
2025-01-30 13D/A CLLS / Cellectis S.A. - Depositary Receipt (Common Stock) Bpifrance Participations SA 10,292,653 13.10 48.89
2025-01-28 13D/A LCTX / Lineage Cell Therapeutics, Inc. Broadwood Partners, L.p. 57,848,357 24.50 37.54
2025-01-24 13D/A CLLS / Cellectis S.A. - Depositary Receipt (Common Stock) Astrazeneca Plc 44,000,000 44.00 175.00
2025-01-23 13D/A SCLX / Scilex Holding Company SCLX Stock Acquisition JV LLC 80,586,928 21.10
2025-01-22 13D/A OTLK / Outlook Therapeutics, Inc. GMS Ventures & Investments 12,725,216 38.60 37.32
2025-01-15 13D/A IMVT / Immunovant, Inc. Roivant Sciences Ltd. 96,660,341 56.90 21.10
2025-01-07 13D VOR / Vor Biopharma Inc. Reprogrammed Interchange LLC 38,974,101 31.30
2025-01-06 13D/A SCLX / Scilex Holding Company SCLX Stock Acquisition JV LLC 84,616,299 22.80 -5.58
2024-12-30 13D/A VOR / Vor Biopharma Inc. Ra Capital Management, L.p. 39,709,850 31.90 74.32
2024-12-26 13D/A FATE / Fate Therapeutics, Inc. Redmile Group, LLC 17,816,634 14.90 1.12
2024-12-26 13D/A PASG / Passage Bio, Inc. Orbimed Advisors Llc 7,404,869 12.00 -7.83
2024-12-19 13D/A ENZN / Enzon Pharmaceuticals, Inc. Icahn Carl C 36,056,636 48.60
2024-12-12 13D/A IVVD / Invivyd, Inc. Polaris Venture Partners V, L.P. 8,094,512 6.80
2024-12-06 13D/A CRBU / Caribou Biosciences, Inc. Haurwitz Rachel E. 4,378,913 4.80 20.92
2024-12-04 13D/A SNTI / Senti Biosciences, Inc. New Enterprise Associates 15, L.P. 442,615 9.60 -90.00
2024-11-26 13D/A CDTX / Cidara Therapeutics, Inc. Ra Capital Management, L.p. 1,092,796 9.99 55.43
2024-11-22 13D/A NMRA / Neumora Therapeutics, Inc. ARCH Venture Fund XII, L.P. 31,979,111 19.80 0.04
2024-11-21 13D/A LCTX / Lineage Cell Therapeutics, Inc. Broadwood Partners, L.p. 42,058,883 19.10 0.18
2024-11-20 13D/A HUMA / Humacyte, Inc. Niklason Laura E 6,007,745 4.60 -22.03
2024-11-14 13D/A SLDB / Solid Biosciences Inc. Perceptive Advisors Llc 6,934,678 17.30 0.14
2024-11-14 13D/A TNYA / Tenaya Therapeutics, Inc. Beehouse, LLC 5,000 0.03 -99.83
2024-11-14 13D/A ARMP / Armata Pharmaceuticals, Inc. Innoviva, Inc. 64,178,259 85.20 0.00
2024-11-13 13D QNCX / Quince Therapeutics, Inc. Lamond David 4,460,154 10.10
2024-11-08 13D ACLX / Arcellx, Inc. Elghandour Rami 2,850,665 5.00
2024-10-31 13D/A ATHA / Athira Pharma, Inc. Perceptive Advisors Llc 5,479,348 14.20 0.38
2024-10-30 13D/A GLUE / Monte Rosa Therapeutics, Inc. Versant Venture Capital VI, L.P. 4,079,469 6.60 -20.00
2024-10-29 13D/A MOLN / Molecular Partners AG - Depositary Receipt (Common Stock) Biotechnology Value Fund L P 9,888,592 24.50 13.71
2024-10-25 13D/A AUTL / Autolus Therapeutics plc - Depositary Receipt (Common Stock) PPF Group N.V. 14,782,275 5.60
2024-10-22 13D/A TIL / Instil Bio, Inc. Curative Ventures V LLC 2,537,498 36.80 -94.10
2024-10-17 13D/A IMTX / Immatics N.V. Perceptive Advisors Llc 9,469,705 7.90 15.90
2024-10-11 13D/A INAB / IN8bio, Inc. BIOS Fund II, LP 10,416,165 23.10 0.00
2024-10-07 13D/A SRRK / Scholar Rock Holding Corporation Samsara BioCapital, L.P. 6,757,255 8.30 -14.23