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Disclosery

DEERFIELD MANAGEMENT COMPANY, L.P.: MRK position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DEERFIELD MANAGEMENT COMPANY, L.P. on MRK, newest first. How the timeline and the estimate are built.

DEERFIELD MANAGEMENT COMPANY, L.P. held 0 MRK shares at 2025-12-31 per its 13F-HR filed 2026-02-17.

the latest 13F is the newest step

  1. period ended2025-12-31
    13F 0 shares
    Change vs previous 13F -1,030,000 shares

    13F-HR 0001213900-26-017265 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    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 ended2025-09-30
    13F 1,030,000 shares
    Change vs previous 13F +172,276 shares

    1.32% of the 13F portfolio, value $86,447,900.

    13F-HR 0001213900-25-110851 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-06-30
    13F 857,724 shares
    Change vs previous 13F +857,724 shares

    1.23% of the 13F portfolio, value $67,897,432.

    13F-HR 0001213900-25-076586 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    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 0 shares
    Change vs previous 13F -8,482 shares

    13F-HR 0001213900-25-014236 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    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.

  5. period ended2024-09-30
    13F 8,482 shares
    Change vs previous 13F not available

    0.01% of the 13F portfolio, value $963,216.

    13F-HR 0001213900-24-098387 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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