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Disclosery

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

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

Siren, L.L.C. held 2,935,830 KYMR 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 2,935,830 shares
    Change vs previous 13F -251,000 shares

    6.83% of the 13F portfolio, value $336,651,626.

    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 3,186,830 shares
    Change vs previous 13F -100,000 shares

    7.36% of the 13F portfolio, value $265,431,071.

    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 3,286,830 shares
    Change vs previous 13F -141,320 shares

    7.63% of the 13F portfolio, value $255,748,242.

    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 3,428,150 shares
    Change vs previous 13F 0 shares

    7.59% of the 13F portfolio, value $194,033,290.

    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 3,428,150 shares
    Change vs previous 13F +187,837 shares

    7.74% of the 13F portfolio, value $149,604,466.

    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 3,240,313 shares
    Change vs previous 13F +270,580 shares

    5% of the 13F portfolio, value $88,687,367.

    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 2,969,733 shares
    Change vs previous 13F 0 shares

    5.28% of the 13F portfolio, value $119,472,359.

    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 2,969,733 shares
    Change vs previous 13F not available

    7.03% of the 13F portfolio, value $140,557,463.

    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).