In Vitro and In Vivo Diagnostic Substances - 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)
2025-09-19 13D/A AWHL / Aspira Women's Health Inc. Schuler Jack W 3,830,365 9.10 40.89
2025-07-29 13D/A IMA / ImageneBio, Inc. Atlas Venture Fund X, L.P. 241,800 2.10
2025-07-28 13D/A IMA / ImageneBio, Inc. BML Investment Partners, L.P. 220,832 1.90
2025-03-25 13D/A TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) Perceptive Advisors Llc 85,800,000 19.80 0.00
2025-03-10 13D/A AWHL / Aspira Women's Health Inc. Schuler Jack W 2,718,692 14.70 41.70
2025-02-14 13D/A TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) Perceptive Advisors Llc 85,800,000 20.90 53.21
2025-02-10 13D/A IMDX / Insight Molecular Diagnostics Inc. Broadwood Partners, L.p. 11,560,350 40.20 127.60
2024-12-26 13D TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) New Main Equity Co., Ltd. 0 0.00
2024-11-21 13D/A QDEL / QuidelOrtho Corporation Carlyle Group Inc. 0 0.00 -100.00
2024-11-14 13D/A TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) Perceptive Advisors Llc 56,000,000 22.60 0.00
2024-09-17 13D/A ICCC / ImmuCell Corporation Srk Fund I, Lp. 502,258 6.40 28.35
2024-08-27 13D ICCC / ImmuCell Corporation Knudsen Ejnar A III 463,619 5.90
2024-08-05 13D/A QDEL / QuidelOrtho Corporation Carlyle Group Inc. 8,724,346 13.00 -7.62
2024-07-30 13D/A QDEL / QuidelOrtho Corporation Carlyle Group Inc. 9,444,215 14.10 -8.56
2024-07-24 13D/A QDEL / QuidelOrtho Corporation Carlyle Group Inc. 10,327,772 15.40 -6.49
2024-07-19 13D TKNO / Alpha Teknova, Inc. Telegraph Hill Partners IV, L.P. 37,717,565 70.80 47.21
2024-07-15 13D/A QDEL / QuidelOrtho Corporation Carlyle Group Inc. 11,045,002 16.50 -6.13
2024-07-11 13D/A AWHL / Aspira Women's Health Inc. Schuler Jack W 1,918,692 14.00 0.34
2024-06-25 13D/A QDEL / QuidelOrtho Corporation Carlyle Group Inc. 11,766,022 17.60
2024-06-18 13D/A AWHL / Aspira Women's Health Inc. Schuler Jack W 1,912,156 15.40 1.51
2024-05-22 13D ICCC / ImmuCell Corporation Srk Fund I, Lp. 391,322 5.00
2024-05-14 13D/A QDEL / QuidelOrtho Corporation Carlyle Group Inc.
2024-05-01 13D/A TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) Perceptive Advisors Llc 56,000,000 26.80 0.00
2024-02-09 13D TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) Perceptive Advisors Llc 56,000,000 26.80
2024-02-09 13D/A VNRX / VolitionRx Limited Reynolds Cameron John 2,868,465 3.50 7.27
2024-02-05 13D/A NAVB / Navidea Biopharmaceuticals, Inc. Scott John K Jr. 110,321,886 61.80 0.00
2024-01-02 13D/A TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) MiCo IVD Holdings, LLC 46,294,005 29.99 0.37
2024-01-02 13D/A TRIB / Trinity Biotech plc - Depositary Receipt (Common Stock) MiCo Co., Ltd. 0 0.00
2023-12-21 13D/A NAVB / Navidea Biopharmaceuticals, Inc. Scott John K Jr. 110,321,886 61.80 111.62
2023-07-26 13D/A AWHL / Aspira Women's Health Inc. Schuler Jack W 1,883,656 18.70 -92.72
2023-07-05 13D/A NAVB / Navidea Biopharmaceuticals, Inc. Scott John K Jr. 52,131,254 75.04 72.19
2023-06-28 13D/A CDIO / Cardio Diagnostics Holdings, Inc. Dogan Meeshanthini 307,433 20.90 -86.47
2023-06-28 13D/A CDIO / Cardio Diagnostics Holdings, Inc. Philibert Robert 1,586,464 19.10 -25.51
2023-06-16 13D/A NAVB / Navidea Biopharmaceuticals, Inc. Scott John K Jr. 30,275,304 52.85 61.33
2023-03-23 13D/A ACHV / Achieve Life Sciences, Inc. Dialectic Capital Management, Lp 3,549,000 19.80
2023-03-06 13D/A ACHV / Achieve Life Sciences, Inc. Dialectic Capital Management, Lp 3,549,000 19.80
2023-02-27 13D JE:QTNT / Quotient Ltd Quotient Holdings GP, LLC 17,020,000 80.80
2023-02-22 13D/A JE:QTNT / Quotient Ltd Bracebridge Capital, LLC 81,614 0.40
2023-02-21 13D/A JE:QTNT / Quotient Ltd Honeywell Capital Management Llc 14,644 0.07
2023-02-21 13D/A JE:QTNT / Quotient Ltd Whitebox Advisors Llc 0 0.00
2023-02-21 13D/A JE:QTNT / Quotient Ltd Ci Investments Inc. 106,870 0.50
2023-02-21 13D/A JE:QTNT / Quotient Ltd Ameriprise Financial Inc 94,755 0.45 -2.11
2023-02-21 13D/A JE:QTNT / Quotient Ltd Highbridge Capital Management Llc 17,247,931 81.92
2023-01-20 13D ACHV / Achieve Life Sciences, Inc. Dialectic Capital Management, Lp 3,549,000 19.80 0.00
2022-12-15 13D JE:QTNT / Quotient Ltd Honeywell Capital Management Llc 14,644 0.40
2022-12-15 13D JE:QTNT / Quotient Ltd Whitebox Advisors Llc 22,043 0.60
2022-12-15 13D JE:QTNT / Quotient Ltd Bracebridge Capital, LLC 125,703 3.40
2022-12-15 13D JE:QTNT / Quotient Ltd Ci Investments Inc. 172,256 4.70
2022-12-15 13D JE:QTNT / Quotient Ltd Ameriprise Financial Inc 96,800 2.70 -98.12
2022-12-13 13D JE:QTNT / Quotient Ltd Highbridge Capital Management Llc 784,105 9.99 -96.26