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RA CAPITAL MANAGEMENT, L.P.: SLDB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of RA CAPITAL MANAGEMENT, L.P. on SLDB, newest first. How the timeline and the estimate are built.

RA CAPITAL MANAGEMENT, L.P. held 12,036,126 SLDB shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 12,036,126 shares
    Change vs previous 13F +2,696,148 shares

    1.04% of the 13F portfolio, value $120,240,899.

    13F-HR 0001104659-26-097251 filed by RA CAPITAL MANAGEMENT, L.P.
    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 9,339,978 shares
    Change vs previous 13F +3,528,555 shares

    0.71% of the 13F portfolio, value $67,247,842.

    13F-HR 0001104659-26-062637 filed by RA CAPITAL MANAGEMENT, L.P.
    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 5,811,423 shares
    Change vs previous 13F 0 shares

    0.34% of the 13F portfolio, value $32,776,426.

    13F-HR 0001104659-26-016482 filed by RA CAPITAL MANAGEMENT, L.P.
    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 5,811,423 shares
    Change vs previous 13F +100 shares

    0.44% of the 13F portfolio, value $35,856,480.

    13F-HR 0001104659-25-112469 filed by RA CAPITAL MANAGEMENT, L.P.
    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 5,811,323 shares
    Change vs previous 13F +1,480,877 shares

    0.48% of the 13F portfolio, value $28,301,143.

    13F-HR 0001104659-25-078691 filed by RA CAPITAL MANAGEMENT, L.P.
    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 4,330,446 shares
    Change vs previous 13F 0 shares

    0.27% of the 13F portfolio, value $16,022,650.

    13F-HR 0001104659-25-049549 filed by RA CAPITAL MANAGEMENT, L.P.
    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 4,330,446 shares
    Change vs previous 13F 0 shares

    0.23% of the 13F portfolio, value $17,321,784.

    13F-HR 0001104659-25-014181 filed by RA CAPITAL MANAGEMENT, L.P.
    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 4,330,446 shares
    Change vs previous 13F not available

    0.35% of the 13F portfolio, value $30,183,209.

    13F-HR 0001104659-24-119034 filed by RA CAPITAL MANAGEMENT, L.P.
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).