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ARCH Venture Management, LLC: GENB position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of ARCH Venture Management, LLC on GENB, newest first. How the timeline and the estimate are built.

ARCH Venture Management, LLC held 1,944,426 GENB 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 1,944,426 shares
    Change vs previous 13F 0 shares

    2.98% of the 13F portfolio, value $32,802,467.

    13F-HR 0001012975-26-000794 filed by ARCH Venture Management, 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 1,944,426 shares
    Change vs previous 13F not available

    3.59% of the 13F portfolio, value $24,305,325.

    13F-HR 0001012975-26-000461 filed by ARCH Venture Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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