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Atlas Venture Life Science Advisors, LLC: KYMR position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Atlas Venture Life Science Advisors, LLC on KYMR, newest first. How the timeline and the estimate are built.

Atlas Venture Life Science Advisors, LLC held 2,847,541 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 2,847,541 shares
    Change vs previous 13F -1,730,467 shares

    37.05% of the 13F portfolio, value $326,527,526.

    13F-HR 0001104659-26-095933 filed by Atlas Venture Life Science Advisors, LLC
    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 4,578,008 shares
    Change vs previous 13F -81,866 shares

    48.26% of the 13F portfolio, value $381,302,286.

    13F-HR 0001104659-26-061232 filed by Atlas Venture Life Science Advisors, LLC
    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 4,659,874 shares
    Change vs previous 13F -236,588 shares

    41.91% of the 13F portfolio, value $362,584,796.

    13F-HR 0001104659-26-014463 filed by Atlas Venture Life Science Advisors, LLC
    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 4,896,462 shares
    Change vs previous 13F 0 shares

    36.82% of the 13F portfolio, value $277,139,749.

    13F-HR 0001104659-25-111321 filed by Atlas Venture Life Science Advisors, LLC
    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 4,896,462 shares
    Change vs previous 13F 0 shares

    32.26% of the 13F portfolio, value $213,681,602.

    13F-HR 0001104659-25-076898 filed by Atlas Venture Life Science Advisors, LLC
    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 4,896,462 shares
    Change vs previous 13F 0 shares

    25.69% of the 13F portfolio, value $134,016,165.

    13F-HR 0001104659-25-048527 filed by Atlas Venture Life Science Advisors, LLC
    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 4,896,462 shares
    Change vs previous 13F 0 shares

    24.03% of the 13F portfolio, value $196,984,666.

    13F-HR 0001104659-25-010152 filed by Atlas Venture Life Science Advisors, LLC
    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 4,896,462 shares
    Change vs previous 13F not available

    21.48% of the 13F portfolio, value $231,749,546.

    13F-HR 0001104659-24-116967 filed by Atlas Venture Life Science Advisors, LLC
    Filed (acceptance time not in the bulk data set), ingested

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