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Disclosery

Prosight Management, LP: BSX position timeline

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

Prosight Management, LP held 1,270,273 BSX 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 1,270,273 shares
    Change vs previous 13F +474,726 shares

    9.34% of the 13F portfolio, value $54,215,252.

    13F-HR 0001420506-26-001799 filed by Prosight 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 795,547 shares
    Change vs previous 13F +585,547 shares

    8.19% of the 13F portfolio, value $49,920,574.

    13F-HR 0001420506-26-001036 filed by Prosight 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 210,000 shares
    Change vs previous 13F +133,900 shares

    4.14% of the 13F portfolio, value $20,023,500.

    13F-HR 0001420506-26-000422 filed by Prosight 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 76,100 shares
    Change vs previous 13F not available

    1.78% of the 13F portfolio, value $7,429,643.

    13F-HR 0001420506-25-003233 filed by Prosight Management, LP
    Filed (acceptance time not in the bulk data set), ingested

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