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Disclosery

Siren, L.L.C.: RCUS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Siren, L.L.C. on RCUS, newest first. How the timeline and the estimate are built.

Siren, L.L.C. held 2,420,430 RCUS shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 2,420,430 shares
    Change vs previous 13F -586,647 shares

    1.51% of the 13F portfolio, value $74,621,857.

    13F-HR 0002005245-26-000008 filed by Siren, L.L.C.
    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 3,007,077 shares
    Change vs previous 13F 0 shares

    1.8% of the 13F portfolio, value $64,952,863.

    13F-HR 0002005245-26-000006 filed by Siren, L.L.C.
    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 3,007,077 shares
    Change vs previous 13F +95,000 shares

    2.14% of the 13F portfolio, value $71,658,645.

    13F-HR 0002005245-26-000003 filed by Siren, L.L.C.
    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 2,912,077 shares
    Change vs previous 13F +1,300,000 shares

    1.55% of the 13F portfolio, value $39,604,247.

    13F-HR 0002005245-25-000012 filed by Siren, L.L.C.
    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 1,612,077 shares
    Change vs previous 13F 0 shares

    0.68% of the 13F portfolio, value $13,122,307.

    13F-HR 0002005369-25-000014 filed by Siren, L.L.C.
    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/A 1,612,077 shares
    Change vs previous 13F 0 shares

    0.71% of the 13F portfolio, value $12,654,804.

    13F-HR/A 0002005245-25-000008 filed by Siren, L.L.C.
    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 1,612,077 shares
    Change vs previous 13F 0 shares

    1.06% of the 13F portfolio, value $24,003,827.

    13F-HR 0002005245-25-000002 filed by Siren, L.L.C.
    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 1,612,077 shares
    Change vs previous 13F not available

    1.23% of the 13F portfolio, value $24,648,657.

    13F-HR 0002005245-24-000005 filed by Siren, L.L.C.
    Filed (acceptance time not in the bulk data set), ingested

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