Skip to content
Disclosery

EcoR1 Capital, LLC: WHWK position timeline

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

EcoR1 Capital, LLC held 0 WHWK shares at 2025-09-30 per its 13F-HR filed 2025-11-14.

the latest 13F is the newest step

  1. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -1,091,417 shares

    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).

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

  2. period ended2025-06-30
    13F 1,091,417 shares
    Change vs previous 13F -990,583 shares

    0.12% of the 13F portfolio, value $2,040,950.

    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).

  3. period ended2025-03-31
    13F 2,082,000 shares
    Change vs previous 13F +1,736,747 shares

    0.22% of the 13F portfolio, value $3,705,960.

    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).

  4. period ended2024-12-31
    13F 345,253 shares
    Change vs previous 13F -1,500,000 shares

    0.04% of the 13F portfolio, value $1,089,273.

    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).

  5. period ended2024-09-30
    13F 1,845,253 shares
    Change vs previous 13F not available

    0.13% of the 13F portfolio, value $3,801,221.

    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).