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Cormorant Asset Management, LP: KRRO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Cormorant Asset Management, LP on KRRO, newest first. How the timeline and the estimate are built.

Cormorant Asset Management, LP held 0 KRRO shares at 2025-12-31 per its 13F-HR filed 2026-02-17.

the latest 13F is the newest step

  1. period ended2025-12-31
    13F 0 shares
    Change vs previous 13F -465,000 shares

    13F-HR 0001583977-26-000001 filed by Cormorant Asset Management, LP
    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 ended2025-09-30
    13F 465,000 shares
    Change vs previous 13F 0 shares

    1.54% of the 13F portfolio, value $22,268,850.

    13F-HR 0001583977-25-000011 filed by Cormorant Asset Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-06-30
    13F 465,000 shares
    Change vs previous 13F +84,697 shares

    0.43% of the 13F portfolio, value $5,807,850.

    13F-HR 0001583977-25-000007 filed by Cormorant Asset Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-03-31
    13F 380,303 shares
    Change vs previous 13F +380,303 shares

    0.5% of the 13F portfolio, value $6,621,075.

    13F-HR 0001583977-25-000005 filed by Cormorant Asset Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2024-12-31
    13F 0 shares
    Change vs previous 13F -265,826 shares

    13F-HR 0001583977-25-000001 filed by Cormorant Asset Management, LP
    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.

  6. period ended2024-09-30
    13F 265,826 shares
    Change vs previous 13F not available

    0.47% of the 13F portfolio, value $8,883,905.

    13F-HR 0001583977-24-000006 filed by Cormorant Asset Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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