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Disclosery

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

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

Siren, L.L.C. held 1,715,476 ARWR 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 1,715,476 shares
    Change vs previous 13F +100,000 shares

    2.84% of the 13F portfolio, value $139,828,449.

    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 1,615,476 shares
    Change vs previous 13F +115,000 shares

    2.81% of the 13F portfolio, value $101,290,345.

    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 1,500,476 shares
    Change vs previous 13F -1,169,404 shares

    2.97% of the 13F portfolio, value $99,616,602.

    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 2,669,880 shares
    Change vs previous 13F 0 shares

    3.6% of the 13F portfolio, value $92,084,161.

    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 2,669,880 shares
    Change vs previous 13F 0 shares

    2.18% of the 13F portfolio, value $42,184,104.

    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 2,669,880 shares
    Change vs previous 13F -231,801 shares

    1.92% of the 13F portfolio, value $34,014,271.

    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 2,901,681 shares
    Change vs previous 13F +442,903 shares

    2.41% of the 13F portfolio, value $54,551,603.

    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 2,458,778 shares
    Change vs previous 13F not available

    2.38% of the 13F portfolio, value $47,626,530.

    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).