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

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

RA CAPITAL MANAGEMENT, L.P. held 9,550,191 NAMS 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 9,550,191 shares
    Change vs previous 13F 0 shares

    2.81% of the 13F portfolio, value $323,655,973.

    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 9,550,191 shares
    Change vs previous 13F 0 shares

    3.24% of the 13F portfolio, value $305,701,614.

    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 9,550,191 shares
    Change vs previous 13F -588,747 shares

    3.43% of the 13F portfolio, value $335,020,700.

    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 10,138,938 shares
    Change vs previous 13F 0 shares

    3.55% of the 13F portfolio, value $288,351,397.

    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 10,138,938 shares
    Change vs previous 13F 0 shares

    3.09% of the 13F portfolio, value $183,616,167.

    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 10,138,938 shares
    Change vs previous 13F +1,293,938 shares

    3.47% of the 13F portfolio, value $207,544,061.

    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 8,845,000 shares
    Change vs previous 13F +781,000 shares

    3.03% of the 13F portfolio, value $227,316,500.

    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 8,064,000 shares
    Change vs previous 13F not available

    1.54% of the 13F portfolio, value $133,862,400.

    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).