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Disclosery

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

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

Siren, L.L.C. held 0 ARGX shares at 2025-03-31 per its 13F-HR/A filed 2025-05-23.

the latest 13F is the newest step

  1. period ended2025-03-31
    13F/A 0 shares
    Change vs previous 13F -115,045 shares

    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).

    Exited: the 13F for this period no longer lists the position.

  2. period ended2024-12-31
    13F 115,045 shares
    Change vs previous 13F -28,602 shares

    3.13% of the 13F portfolio, value $70,752,675.

    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).

  3. period ended2024-09-30
    13F 143,647 shares
    Change vs previous 13F not available

    3.9% of the 13F portfolio, value $77,868,166.

    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).