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Disclosery

HighVista Strategies LLC: INSM position timeline

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

HighVista Strategies LLC held 31,256 INSM 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 31,256 shares
    Change vs previous 13F +6,940 shares

    0.76% of the 13F portfolio, value $3,332,515.

    13F-HR 0001172661-26-003470 filed by HighVista Strategies 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 24,316 shares
    Change vs previous 13F -15,084 shares

    1.1% of the 13F portfolio, value $3,976,152.

    13F-HR 0001172661-26-002079 filed by HighVista Strategies 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 39,400 shares
    Change vs previous 13F -10,549 shares

    1.77% of the 13F portfolio, value $6,857,176.

    13F-HR 0001172661-26-000882 filed by HighVista Strategies 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 49,949 shares
    Change vs previous 13F +38,354 shares

    1.76% of the 13F portfolio, value $7,193,155.

    13F-HR 0001172661-25-004799 filed by HighVista Strategies 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 11,595 shares
    Change vs previous 13F -9,845 shares

    0.43% of the 13F portfolio, value $1,166,921.

    13F-HR 0001172661-25-003309 filed by HighVista Strategies 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 21,440 shares
    Change vs previous 13F -6,172 shares

    0.63% of the 13F portfolio, value $1,635,658.

    13F-HR 0001172661-25-001991 filed by HighVista Strategies 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 27,612 shares
    Change vs previous 13F -17,835 shares

    0.71% of the 13F portfolio, value $1,906,332.

    13F-HR 0001172661-25-000973 filed by HighVista Strategies 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 45,447 shares
    Change vs previous 13F not available

    1.14% of the 13F portfolio, value $3,317,631.

    13F-HR 0001172661-24-004811 filed by HighVista Strategies LLC
    Filed (acceptance time not in the bulk data set), ingested

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