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Disclosery

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

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

Siren, L.L.C. held 1,900,000 SEPN 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 1,900,000 shares
    Change vs previous 13F -100,000 shares

    1.29% of the 13F portfolio, value $63,631,000.

    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 2,000,000 shares
    Change vs previous 13F 0 shares

    1.33% of the 13F portfolio, value $48,060,000.

    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 2,000,000 shares
    Change vs previous 13F -202,514 shares

    1.66% of the 13F portfolio, value $55,760,000.

    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 2,202,514 shares
    Change vs previous 13F 0 shares

    1.62% of the 13F portfolio, value $41,429,288.

    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 2,202,514 shares
    Change vs previous 13F 0 shares

    1.2% of the 13F portfolio, value $23,280,573.

    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 2,202,514 shares
    Change vs previous 13F 0 shares

    0.72% of the 13F portfolio, value $12,752,556.

    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 2,202,514 shares
    Change vs previous 13F not available

    2.23% of the 13F portfolio, value $50,437,571.

    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).