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Disclosery

Rock Springs Capital Management LP: MIRM position timeline

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

Rock Springs Capital Management LP held 798,145 MIRM 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 798,145 shares
    Change vs previous 13F -13,149 shares

    4.56% of the 13F portfolio, value $93,438,835.

    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 811,294 shares
    Change vs previous 13F +49,000 shares

    4.42% of the 13F portfolio, value $74,947,340.

    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 762,294 shares
    Change vs previous 13F +1,168 shares

    3.09% of the 13F portfolio, value $60,213,603.

    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 761,126 shares
    Change vs previous 13F -57,080 shares

    3.26% of the 13F portfolio, value $55,798,147.

    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 818,206 shares
    Change vs previous 13F -133,559 shares

    2.59% of the 13F portfolio, value $41,638,503.

    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 951,765 shares
    Change vs previous 13F -519,799 shares

    2.45% of the 13F portfolio, value $42,877,013.

    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 1,471,564 shares
    Change vs previous 13F -108,924 shares

    2.32% of the 13F portfolio, value $60,849,171.

    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 1,580,488 shares
    Change vs previous 13F not available

    2.01% of the 13F portfolio, value $61,639,032.

    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).