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TANG CAPITAL MANAGEMENT LLC: PTCT position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of TANG CAPITAL MANAGEMENT LLC on PTCT, newest first. How the timeline and the estimate are built.

TANG CAPITAL MANAGEMENT LLC held 1,500,000 PTCT shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,500,000 shares
    Change vs previous 13F 0 shares

    5.56% of the 13F portfolio, value $122,355,000.

    13F-HR 0001214659-26-010416 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 1,500,000 shares
    Change vs previous 13F 0 shares

    5.19% of the 13F portfolio, value $102,195,000.

    13F-HR 0001214659-26-006493 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 1,500,000 shares
    Change vs previous 13F 0 shares

    5.63% of the 13F portfolio, value $113,940,000.

    13F-HR 0001214659-26-002015 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 1,500,000 shares
    Change vs previous 13F +400,000 shares

    3.54% of the 13F portfolio, value $92,055,000.

    13F-HR 0001214659-25-016677 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 1,100,000 shares
    Change vs previous 13F +100,000 shares

    2.72% of the 13F portfolio, value $53,724,000.

    13F-HR 0001214659-25-012272 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 1,000,000 shares
    Change vs previous 13F +300,000 shares

    2.82% of the 13F portfolio, value $50,960,000.

    13F-HR 0001214659-25-007882 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 700,000 shares
    Change vs previous 13F 0 shares

    2.09% of the 13F portfolio, value $31,598,000.

    13F-HR 0001214659-25-002812 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 700,000 shares
    Change vs previous 13F not available

    1.86% of the 13F portfolio, value $25,970,000.

    13F-HR 0001214659-24-019100 filed by TANG CAPITAL MANAGEMENT LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).