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Disclosery

Rock Springs Capital Management LP: OSCR position timeline

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

Rock Springs Capital Management LP held 0 OSCR shares at 2025-09-30 per its 13F-HR filed 2025-11-14.

the latest 13F is the newest step

  1. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -700,000 shares

    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).

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-06-30
    13F 700,000 shares
    Change vs previous 13F -350,000 shares

    0.94% of the 13F portfolio, value $15,008,000.

    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).

  3. period ended2025-03-31
    13F 1,050,000 shares
    Change vs previous 13F 0 shares

    0.79% of the 13F portfolio, value $13,765,500.

    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).

  4. period ended2024-12-31
    13F 1,050,000 shares
    Change vs previous 13F +38,600 shares

    0.54% of the 13F portfolio, value $14,112,000.

    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).

  5. period ended2024-09-30
    13F 1,011,400 shares
    Change vs previous 13F not available

    0.7% of the 13F portfolio, value $21,451,794.

    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).