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Disclosery

Rock Springs Capital Management LP: ZLAB position timeline

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

Rock Springs Capital Management LP held 814,707 ZLAB 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 814,707 shares
    Change vs previous 13F 0 shares

    0.76% of the 13F portfolio, value $15,479,433.

    13F-HR 0001172661-26-003527 filed by Rock Springs Capital Management LP
    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 814,707 shares
    Change vs previous 13F +3,161 shares

    0.9% of the 13F portfolio, value $15,324,639.

    13F-HR 0001172661-26-002225 filed by Rock Springs Capital 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 ended2025-12-31
    13F 811,546 shares
    Change vs previous 13F +20,353 shares

    0.73% of the 13F portfolio, value $14,315,671.

    13F-HR 0001172661-26-000917 filed by Rock Springs Capital 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 ended2025-09-30
    13F 791,193 shares
    Change vs previous 13F -80,199 shares

    1.57% of the 13F portfolio, value $26,813,531.

    13F-HR 0001172661-25-004882 filed by Rock Springs Capital 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 ended2025-06-30
    13F 871,392 shares
    Change vs previous 13F -33,200 shares

    1.9% of the 13F portfolio, value $30,472,578.

    13F-HR 0001172661-25-003273 filed by Rock Springs Capital Management LP
    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 904,592 shares
    Change vs previous 13F -400,745 shares

    1.87% of the 13F portfolio, value $32,691,955.

    13F-HR 0001172661-25-001953 filed by Rock Springs Capital Management LP
    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 1,305,337 shares
    Change vs previous 13F -10,336 shares

    1.3% of the 13F portfolio, value $34,186,776.

    13F-HR 0001172661-25-000867 filed by Rock Springs Capital Management LP
    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 1,315,673 shares
    Change vs previous 13F not available

    1.03% of the 13F portfolio, value $31,760,346.

    13F-HR 0001172661-24-004721 filed by Rock Springs Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

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