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Disclosery

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

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

Siren, L.L.C. held 610,515 SION 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 610,515 shares
    Change vs previous 13F +310,515 shares

    0.55% of the 13F portfolio, value $26,856,555.

    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 300,000 shares
    Change vs previous 13F 0 shares

    0.33% of the 13F portfolio, value $12,027,000.

    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 300,000 shares
    Change vs previous 13F -25,000 shares

    0.37% of the 13F portfolio, value $12,342,000.

    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 325,000 shares
    Change vs previous 13F 0 shares

    0.37% of the 13F portfolio, value $9,558,250.

    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 325,000 shares
    Change vs previous 13F 0 shares

    0.29% of the 13F portfolio, value $5,638,750.

    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 325,000 shares
    Change vs previous 13F not available

    0.19% of the 13F portfolio, value $3,399,500.

    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).