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FRED ALGER MANAGEMENT, LLC: INSM position timeline

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

FRED ALGER MANAGEMENT, LLC held 82,325 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 82,325 shares
    Change vs previous 13F -43,441 shares

    0.03% of the 13F portfolio, value $8,777,492.

    13F-HR 0001193125-26-352250 filed by FRED ALGER MANAGEMENT, 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 125,766 shares
    Change vs previous 13F +44,455 shares

    0.09% of the 13F portfolio, value $20,565,256.

    13F-HR 0001193125-26-226659 filed by FRED ALGER MANAGEMENT, 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 81,311 shares
    Change vs previous 13F -12,722 shares

    0.06% of the 13F portfolio, value $14,151,366.

    13F-HR 0001193125-26-052991 filed by FRED ALGER MANAGEMENT, 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 94,033 shares
    Change vs previous 13F -95,686 shares

    0.05% of the 13F portfolio, value $13,541,692.

    13F-HR 0001193125-25-282909 filed by FRED ALGER MANAGEMENT, 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 189,719 shares
    Change vs previous 13F -188,612 shares

    0.09% of the 13F portfolio, value $19,093,320.

    13F-HR 0000950123-25-008360 filed by FRED ALGER MANAGEMENT, 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 378,331 shares
    Change vs previous 13F -7,129 shares

    0.16% of the 13F portfolio, value $28,862,872.

    13F-HR 0000950123-25-005777 filed by FRED ALGER MANAGEMENT, 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 385,460 shares
    Change vs previous 13F -66,856 shares

    0.13% of the 13F portfolio, value $26,612,158.

    13F-HR 0000950123-25-002764 filed by FRED ALGER MANAGEMENT, 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 452,316 shares
    Change vs previous 13F not available

    0.16% of the 13F portfolio, value $33,019,068.

    13F-HR 0000950123-24-011836 filed by FRED ALGER MANAGEMENT, LLC
    Filed (acceptance time not in the bulk data set), ingested

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