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Fairmount Funds Management LLC: ZBIO position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Fairmount Funds Management LLC on ZBIO, newest first. How the timeline and the estimate are built.

Fairmount Funds Management LLC held 2,359,025 ZBIO 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 2,359,025 shares
    Change vs previous 13F 0 shares

    3.96% of the 13F portfolio, value $59,872,055.

    13F-HR 0001104659-26-096405 filed by Fairmount Funds 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 2,359,025 shares
    Change vs previous 13F +150,000 shares

    3.33% of the 13F portfolio, value $46,118,939.

    13F-HR 0001104659-26-062419 filed by Fairmount Funds 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 2,209,025 shares
    Change vs previous 13F +316,219 shares

    6.11% of the 13F portfolio, value $80,209,698.

    13F-HR 0001104659-26-016303 filed by Fairmount Funds 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 1,892,806 shares
    Change vs previous 13F 0 shares

    3.78% of the 13F portfolio, value $42,020,293.

    13F-HR 0001104659-25-112427 filed by Fairmount Funds 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 1,892,806 shares
    Change vs previous 13F 0 shares

    2.38% of the 13F portfolio, value $18,341,290.

    13F-HR 0001104659-25-078521 filed by Fairmount Funds 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 1,892,806 shares
    Change vs previous 13F 0 shares

    2.32% of the 13F portfolio, value $14,953,167.

    13F-HR 0001104659-25-049337 filed by Fairmount Funds 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 1,892,806 shares
    Change vs previous 13F 0 shares

    1.54% of the 13F portfolio, value $15,502,081.

    13F-HR 0001104659-25-014003 filed by Fairmount Funds 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 1,892,806 shares
    Change vs previous 13F not available

    2.6% of the 13F portfolio, value $32,026,278.

    13F-HR 0001104659-24-118833 filed by Fairmount Funds Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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