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RTW INVESTMENTS, LP: CSTL position timeline

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

RTW INVESTMENTS, LP held 2,778,335 CSTL 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 2,778,335 shares
    Change vs previous 13F +20,000 shares

    0.57% of the 13F portfolio, value $66,263,290.

    13F-HR 0001493215-26-000164 filed by RTW INVESTMENTS, 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 2,758,335 shares
    Change vs previous 13F +643,098 shares

    0.67% of the 13F portfolio, value $67,717,124.

    13F-HR 0001493215-26-000130 filed by RTW INVESTMENTS, 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 2,115,237 shares
    Change vs previous 13F not available

    0.82% of the 13F portfolio, value $82,282,719.

    13F-HR 0001493215-26-000060 filed by RTW INVESTMENTS, LP
    Filed (acceptance time not in the bulk data set), ingested

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