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Atlas Venture Life Science Advisors, LLC: KRRO 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 KRRO, newest first. How the timeline and the estimate are built.

Atlas Venture Life Science Advisors, LLC held 962,884 KRRO 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 962,884 shares
    Change vs previous 13F -174,265 shares

    1.44% of the 13F portfolio, value $12,690,811.

    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 1,137,149 shares
    Change vs previous 13F 0 shares

    1.63% of the 13F portfolio, value $12,872,527.

    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 1,137,149 shares
    Change vs previous 13F 0 shares

    1.05% of the 13F portfolio, value $9,108,563.

    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 1,137,149 shares
    Change vs previous 13F 0 shares

    7.24% of the 13F portfolio, value $54,458,066.

    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 1,137,149 shares
    Change vs previous 13F 0 shares

    2.14% of the 13F portfolio, value $14,202,991.

    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 1,137,149 shares
    Change vs previous 13F 0 shares

    3.79% of the 13F portfolio, value $19,797,764.

    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 1,137,149 shares
    Change vs previous 13F 0 shares

    5.28% of the 13F portfolio, value $43,291,262.

    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 1,137,149 shares
    Change vs previous 13F not available

    3.52% of the 13F portfolio, value $38,003,520.

    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).