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Disclosery

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

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

Siren, L.L.C. held 5,602,970 BCAX 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 5,602,970 shares
    Change vs previous 13F -200,000 shares

    3.38% of the 13F portfolio, value $166,352,179.

    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 5,802,970 shares
    Change vs previous 13F +586,001 shares

    3.2% of the 13F portfolio, value $115,421,073.

    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 5,216,969 shares
    Change vs previous 13F 0 shares

    2.62% of the 13F portfolio, value $87,801,588.

    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 5,216,969 shares
    Change vs previous 13F 0 shares

    3.22% of the 13F portfolio, value $82,375,941.

    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 5,216,969 shares
    Change vs previous 13F +1,949,886 shares

    2.51% of the 13F portfolio, value $48,465,642.

    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 3,267,083 shares
    Change vs previous 13F -5,744 shares

    2.4% of the 13F portfolio, value $42,570,091.

    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 3,272,827 shares
    Change vs previous 13F +200,000 shares

    2.52% of the 13F portfolio, value $57,012,646.

    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 3,072,827 shares
    Change vs previous 13F not available

    3.92% of the 13F portfolio, value $78,264,904.

    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).