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Disclosery

EcoR1 Capital, LLC: XNCR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of EcoR1 Capital, LLC on XNCR, newest first. How the timeline and the estimate are built.

EcoR1 Capital, LLC held 0 XNCR 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 0 shares
    Change vs previous 13F -2,183,000 shares

    13F-HR 0000935836-26-000415 filed by EcoR1 Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2026-03-31
    13F 2,183,000 shares
    Change vs previous 13F -1,068,112 shares

    1.13% of the 13F portfolio, value $26,326,980.

    13F-HR 0000935836-26-000270 filed by EcoR1 Capital, 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 3,251,112 shares
    Change vs previous 13F -2,893,655 shares

    2.27% of the 13F portfolio, value $49,774,525.

    13F-HR 0000935836-26-000101 filed by EcoR1 Capital, 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 6,144,767 shares
    Change vs previous 13F 0 shares

    3.46% of the 13F portfolio, value $72,078,117.

    13F-HR 0000935836-25-000671 filed by EcoR1 Capital, 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 6,144,767 shares
    Change vs previous 13F 0 shares

    2.86% of the 13F portfolio, value $48,297,869.

    13F-HR 0000935836-25-000506 filed by EcoR1 Capital, 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 6,144,767 shares
    Change vs previous 13F 0 shares

    3.88% of the 13F portfolio, value $65,380,321.

    13F-HR 0000935836-25-000338 filed by EcoR1 Capital, 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 6,144,767 shares
    Change vs previous 13F +814,351 shares

    5.64% of the 13F portfolio, value $141,206,746.

    13F-HR 0000935836-25-000164 filed by EcoR1 Capital, 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 5,330,416 shares
    Change vs previous 13F not available

    3.67% of the 13F portfolio, value $107,194,666.

    13F-HR 0000935836-24-000682 filed by EcoR1 Capital, LLC
    Filed (acceptance time not in the bulk data set), ingested

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