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Disclosery

EcoR1 Capital, LLC: IMNM position timeline

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

EcoR1 Capital, LLC held 0 IMNM shares at 2026-03-31 per its 13F-HR filed 2026-05-15.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -2,855,590 shares

    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).

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

  2. period ended2025-12-31
    13F 2,855,590 shares
    Change vs previous 13F -1,223,825 shares

    2.8% of the 13F portfolio, value $61,338,073.

    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).

  3. period ended2025-09-30
    13F 4,079,415 shares
    Change vs previous 13F 0 shares

    2.29% of the 13F portfolio, value $47,769,950.

    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).

  4. period ended2025-06-30
    13F 4,079,415 shares
    Change vs previous 13F 0 shares

    2.25% of the 13F portfolio, value $37,938,560.

    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).

  5. period ended2025-03-31
    13F 4,079,415 shares
    Change vs previous 13F +200,000 shares

    1.63% of the 13F portfolio, value $27,454,463.

    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).

  6. period ended2024-12-31
    13F 3,879,415 shares
    Change vs previous 13F 0 shares

    1.65% of the 13F portfolio, value $41,199,387.

    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).

  7. period ended2024-09-30
    13F 3,879,415 shares
    Change vs previous 13F not available

    1.94% of the 13F portfolio, value $56,717,047.

    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).